Linux64 support, integrated physics/decomposition

indra/CMakeLists.txt

@@ -52,6 +52,9 @@ add_subdirectory(${LIBS_OPEN_PREFIX}llcharacter)
 add_subdirectory(${LIBS_OPEN_PREFIX}llcommon)
 add_subdirectory(${LIBS_OPEN_PREFIX}llimage)
 add_subdirectory(${LIBS_OPEN_PREFIX}libopenjpeg)
+add_subdirectory(${LIBS_OPEN_PREFIX}libhacd)
+add_subdirectory(${LIBS_OPEN_PREFIX}libndhacd)
+add_subdirectory(${LIBS_OPEN_PREFIX}libpathing)
 add_subdirectory(${LIBS_OPEN_PREFIX}llimagej2coj)
 add_subdirectory(${LIBS_OPEN_PREFIX}llinventory)
 add_subdirectory(${LIBS_OPEN_PREFIX}llmath)

indra/cmake/LLPhysicsExtensions.cmake

@@ -1,10 +1,7 @@
 # -*- cmake -*-
-include(Prebuilt)
-
-use_prebuilt_binary(ndPhysicsStub)
 
 set(LLPHYSICSEXTENSIONS_LIBRARIES nd_hacdConvexDecomposition hacd nd_Pathing )
-set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/${LL_ARCH_DIR}/include/ )
+set(LLPHYSICSEXTENSIONS_INCLUDE_DIRS ${LIBS_OPEN_DIR}/libndhacd )
 
 
 

indra/cmake/LLPrimitive.cmake

@@ -3,7 +3,10 @@
 # these should be moved to their own cmake file
 include(Prebuilt)
 use_prebuilt_binary(colladadom)
+
+if (NOT WINDOWS)
 use_prebuilt_binary(pcre)
+endif (NOT WINDOWS)
 
 if (NOT DARWIN AND NOT WINDOWS)
 use_prebuilt_binary(libxml)

indra/libhacd/CMakeLists.txt

@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 2.6.4)
+
+project(libhacd CXX C)
+
+file (GLOB SOURCE_FILES *.cpp )
+file (GLOB INCLUDE_FILES *.h )
+
+add_library(hacd STATIC ${SOURCE_FILES} ${INCLUDE_FILES} )
+

indra/libhacd/hacdCircularList.h

@@ -0,0 +1,85 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_CIRCULAR_LIST_H
+#define HACD_CIRCULAR_LIST_H
+#include <stdlib.h>
+#include "hacdVersion.h"
+#include "hacdMicroAllocator.h"
+namespace HACD
+{
+	//!	CircularListElement class.
+	template < typename T > class CircularListElement
+	{
+    public:
+        T &                                     GetData() { return m_data; }
+        const T &                               GetData() const { return m_data; }
+        CircularListElement<T> * &				GetNext() { return m_next; }
+        CircularListElement<T> * &				GetPrev() { return m_prev; }
+        const CircularListElement<T> * &		GetNext() const { return m_next; }
+        const CircularListElement<T> * &		GetPrev() const { return m_prev; }        
+        //!	Constructor
+												CircularListElement(const T & data) {m_data = data;}
+												CircularListElement(void){}
+        //! Destructor
+												~CircularListElement(void){}
+    private:
+        T										m_data;
+        CircularListElement<T> *				m_next; 
+        CircularListElement<T> *				m_prev;
+
+												CircularListElement(const CircularListElement & rhs);
+	};
+    
+    
+	//!	CircularList class.
+	template < typename T > class CircularList
+	{
+	public:
+        HeapManager * const     				GetHeapManager() const { return m_heapManager;}
+		void									SetHeapManager(HeapManager * const heapManager) { m_heapManager = heapManager;}
+        CircularListElement<T> *  &             GetHead() { return m_head;}        
+		const CircularListElement<T> *          GetHead() const { return m_head;}
+		bool                                    IsEmpty() const { return (m_size == 0);}
+		size_t                                  GetSize() const { return m_size; }
+		const T &                               GetData() const { return m_head->GetData(); }        
+		T &                                     GetData() { return m_head->GetData();}
+		bool                                    Delete() ;
+        bool                                    Delete(CircularListElement<T> * element);
+		CircularListElement<T> *                Add(const T * data = 0);
+		CircularListElement<T> *                Add(const T & data);
+		bool                                    Next();
+		bool                                    Prev();
+		void									Clear() { while(Delete());};
+        const CircularList&						operator=(const CircularList& rhs);
+		//!	Constructor											
+												CircularList(HeapManager * heapManager)
+												{ 
+													m_head = 0; 
+													m_size = 0;
+                                                    m_heapManager = heapManager;
+												}
+												CircularList(const CircularList& rhs);
+		//! Destructor
+		virtual								    ~CircularList(void) {Clear();};
+	private:
+		CircularListElement<T> *				m_head;		//!< a pointer to the head of the circular list
+		size_t									m_size;		//!< number of element in the circular list
+        HeapManager *                           m_heapManager;
+        
+	};
+}
+#include "hacdCircularList.inl"
+#endif

indra/libhacd/hacdCircularList.inl

@@ -0,0 +1,230 @@
+#pragma once
+#ifndef HACD_CIRCULAR_LIST_INL
+#define HACD_CIRCULAR_LIST_INL
+#include <stdlib.h>
+#include "hacdVersion.h"
+namespace HACD
+{
+	template < typename T > 
+	inline bool CircularList<T>::Delete(CircularListElement<T> * element)
+	{
+        if (!element)
+        {
+            return false;
+        }
+		if (m_size > 1)
+		{
+			CircularListElement<T> * next = element->GetNext();
+			CircularListElement<T> * prev = element->GetPrev();
+            if (m_heapManager)
+            {
+				element->~CircularListElement<T>();
+                heap_free(m_heapManager, element);
+            }
+            else
+            {
+			    delete element;
+            }
+			m_size--;
+            if (element == m_head)
+            {
+                m_head = next;
+            }
+			next->GetPrev() = prev;
+			prev->GetNext() = next;
+			return true;
+		}
+		else if (m_size == 1)
+		{
+            if (m_heapManager)
+            {
+				element->~CircularListElement<T>();
+                heap_free(m_heapManager, m_head);
+            }
+            else
+            {
+			    delete m_head;
+            }
+			m_size--;
+			m_head = 0;
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+    
+	template < typename T > 
+	inline bool CircularList<T>::Delete()
+	{
+		if (m_size > 1)
+		{
+			CircularListElement<T> * next = m_head->GetNext();
+			CircularListElement<T> * prev = m_head->GetPrev();
+            if (m_heapManager)
+            {
+				m_head->~CircularListElement<T>();
+                heap_free(m_heapManager, m_head);
+            }
+            else
+            {
+			    delete m_head;
+            }
+			m_size--;
+			m_head = next;
+			next->GetPrev() = prev;
+			prev->GetNext() = next;
+			return true;
+		}
+		else if (m_size == 1)
+		{
+            if (m_heapManager)
+            {
+				m_head->~CircularListElement<T>();
+                heap_free(m_heapManager, m_head);
+            }
+            else
+            {
+			    delete m_head;
+            }
+            m_size--;
+			m_head = 0;
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+	template < typename T > 
+	inline CircularListElement<T> * CircularList<T>::Add(const T * data)
+	{
+		if (m_size == 0)
+		{
+			if (data)
+			{
+                if (m_heapManager)
+                {
+                    m_head = static_cast< CircularListElement<T> * > (heap_malloc(m_heapManager, sizeof(CircularListElement<T>)));
+                    m_head->GetData().Initialize();
+                    m_head->GetData() = (*data);
+                }
+                else
+                {
+				    m_head = new CircularListElement<T>(*data);
+                }
+			}
+			else
+			{
+                if (m_heapManager)
+                {
+                    m_head = static_cast< CircularListElement<T> * > (heap_malloc(m_heapManager, sizeof(CircularListElement<T>)));
+                    m_head->GetData().Initialize();
+                }
+                else
+                {
+    				m_head = new CircularListElement<T>();
+                }
+			}
+			m_head->GetNext() = m_head->GetPrev() = m_head;
+		}
+		else
+		{
+			CircularListElement<T> * next = m_head->GetNext();
+			CircularListElement<T> * element = m_head;
+			if (data)
+			{
+                if (m_heapManager)
+                {
+                    m_head = static_cast< CircularListElement<T> * > (heap_malloc(m_heapManager, sizeof(CircularListElement<T>)));
+                    m_head->GetData().Initialize();
+                    m_head->GetData() = (*data);
+                }
+                else
+                {
+				    m_head = new CircularListElement<T>(*data);
+                }
+			}
+			else
+			{
+                if (m_heapManager)
+                {
+                    m_head = static_cast< CircularListElement<T> * > (heap_malloc(m_heapManager, sizeof(CircularListElement<T>)));
+                    m_head->GetData().Initialize();
+                }
+                else
+                {
+    				m_head = new CircularListElement<T>();
+                }
+			}
+			m_head->GetNext() = next;
+			m_head->GetPrev() = element;
+			element->GetNext() = m_head;
+			next->GetPrev() = m_head;
+		}
+		m_size++;
+		return m_head;
+	}
+	template < typename T > 
+	inline CircularListElement<T> * CircularList<T>::Add(const T & data)
+	{
+		const T * pData = &data;
+		return Add(pData);
+	}
+	template < typename T > 
+	inline bool CircularList<T>::Next()
+	{
+		if (m_size == 0)
+		{
+			return false;
+		}
+		m_head = m_head->GetNext();
+		return true;
+	}
+	template < typename T > 
+	inline bool CircularList<T>::Prev()
+	{
+		if (m_size == 0)
+		{
+			return false;
+		}
+		m_head = m_head->GetPrev();
+		return true;
+	}
+	template < typename T > 
+	inline CircularList<T>::CircularList(const CircularList& rhs)
+	{
+		if (rhs.m_size > 0)
+		{
+			CircularListElement<T> * current = rhs.m_head;
+			do
+			{
+				current = current->GetNext();
+				Add(current->GetData());
+			}
+			while ( current != rhs.m_head );
+		}
+	}
+    template < typename T > 
+	inline const CircularList<T>& CircularList<T>::operator=(const CircularList& rhs)
+	{
+        if (&rhs != this)
+        {
+            Clear();
+            m_heapManager = rhs.m_heapManager;
+            if (rhs.m_size > 0)
+            {
+                CircularListElement<T> * current = rhs.m_head;
+                do
+                {
+                    current = current->GetNext();
+                    Add(current->GetData());
+                }
+                while ( current != rhs.m_head );
+            }
+        }
+        return (*this);
+	}
+}
+#endif

indra/libhacd/hacdGraph.cpp

@@ -0,0 +1,278 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "hacdGraph.h"
+namespace HACD
+{    
+    
+    GraphEdge::GraphEdge()
+    {
+        m_v1 = -1;
+        m_v2 = -1;
+		m_name = -1;
+        m_error = 0;
+        m_concavity = 0;
+        m_deleted = false;
+#ifdef HACD_PRECOMPUTE_CHULLS
+        m_convexHull = 0;
+#endif
+	}
+   
+    GraphVertex::GraphVertex()
+    {
+        m_convexHull = 0;
+		m_name = -1;
+        m_cc = -1;
+        m_concavity = 0;
+        m_surf = 0;
+        m_deleted = false;
+    }
+    
+    bool GraphVertex::DeleteEdge(long name)
+    {
+        return m_edges.Erase(name);
+    }
+
+    Graph::Graph()
+    {
+        m_nV = 0;
+        m_nE = 0;
+        m_nCCs = 0;
+    }
+    
+    Graph::~Graph()
+    {
+    }
+    
+	void Graph::Allocate(size_t nV, size_t nE)
+	{ 
+		m_nV = nV;
+		m_edges.reserve(nE);
+		m_vertices.resize(nV);
+		for(size_t i = 0; i < nV; i++)
+		{
+			m_vertices[i].m_name = static_cast<long>(i);
+		}
+	}
+
+    long Graph::AddVertex()
+    {
+		size_t name = m_vertices.size();
+		m_vertices.resize(name+1);
+        m_vertices[name].m_name = static_cast<long>(name);
+        m_nV++;
+        return static_cast<long>(name);
+    }
+    
+    long Graph::AddEdge(long v1, long v2)
+    {
+		size_t name = m_edges.size();
+		m_edges.push_back(GraphEdge());
+        m_edges[name].m_name = static_cast<long>(name);
+        m_edges[name].m_v1 = v1;
+        m_edges[name].m_v2 = v2;
+        m_vertices[v1].AddEdge(static_cast<long>(name));
+        m_vertices[v2].AddEdge(static_cast<long>(name));
+        m_nE++;
+		return static_cast<long>(name);
+    }
+
+    bool Graph::DeleteEdge(long name)
+    {
+		if (name < static_cast<long>(m_edges.size()))
+		{
+            long v1 = m_edges[name].m_v1;
+            long v2 = m_edges[name].m_v2;
+			m_edges[name].m_deleted = true;
+            m_vertices[v1].DeleteEdge(name);
+            m_vertices[v2].DeleteEdge(name);
+			m_nE--;
+			return true;
+		}
+		return false;
+    }
+    bool Graph::DeleteVertex(long name)
+    {
+		if (name < static_cast<long>(m_vertices.size()))
+		{
+			m_vertices[name].m_deleted = true;
+            m_vertices[name].m_edges.Clear();
+            m_vertices[name].m_ancestors = std::vector<long>();
+            delete m_vertices[name].m_convexHull;
+			m_vertices[name].m_distPoints.Clear();
+			m_vertices[name].m_boudaryEdges.Clear();
+            m_vertices[name].m_convexHull = 0;
+			m_nV--;
+			return true;
+		}
+		return false;
+    }    
+    bool Graph::EdgeCollapse(long v1, long v2)
+	{
+		long edgeToDelete = GetEdgeID(v1, v2);
+        if (edgeToDelete >= 0) 
+		{
+			// delete the edge (v1, v2)
+			DeleteEdge(edgeToDelete);
+			// add v2 to v1 ancestors
+            m_vertices[v1].m_ancestors.push_back(v2);
+			// add v2's ancestors to v1's ancestors
+			m_vertices[v1].m_ancestors.insert(m_vertices[v1].m_ancestors.begin(),
+											  m_vertices[v2].m_ancestors.begin(), 
+											  m_vertices[v2].m_ancestors.end());
+			// update adjacency information
+			SArray<long, SARRAY_DEFAULT_MIN_SIZE> & v1Edges =  m_vertices[v1].m_edges;
+			long b = -1;
+            long idEdge;
+			for(size_t ed = 0; ed < m_vertices[v2].m_edges.Size(); ++ed) 
+			{
+                idEdge = m_vertices[v2].m_edges[ed];
+				if (m_edges[idEdge].m_v1 == v2)
+				{
+					b = m_edges[idEdge].m_v2;
+				}
+				else
+				{
+					b = m_edges[idEdge].m_v1;
+				}
+				if (GetEdgeID(v1, b) >= 0)
+				{
+					m_edges[idEdge].m_deleted = true;
+					m_vertices[b].DeleteEdge(idEdge);
+					m_nE--;
+				}
+				else
+				{
+					m_edges[idEdge].m_v1 = v1;
+					m_edges[idEdge].m_v2 = b;
+					v1Edges.Insert(idEdge);
+				}
+			}
+			// delete the vertex v2
+            DeleteVertex(v2);			
+            return true;
+        }
+		return false;
+    }
+    
+    long Graph::GetEdgeID(long v1, long v2) const
+    {
+		if (v1 < static_cast<long>(m_vertices.size()) && !m_vertices[v1].m_deleted)
+		{
+            long idEdge;
+			for(size_t ed = 0; ed < m_vertices[v1].m_edges.Size(); ++ed) 
+			{
+                idEdge =  m_vertices[v1].m_edges[ed];
+				if ( (m_edges[idEdge].m_v1 == v2) || 
+					 (m_edges[idEdge].m_v2 == v2)   ) 
+				{
+					return m_edges[idEdge].m_name;
+				}
+			}
+		}
+        return -1;
+    }
+    
+	void Graph::Print() const
+	{
+		std::cout << "-----------------------------" << std::endl;
+        std::cout << "vertices (" << m_nV << ")" << std::endl;
+        for (size_t v = 0; v < m_vertices.size(); ++v) 
+		{
+			const GraphVertex & currentVertex = m_vertices[v];
+			if (!m_vertices[v].m_deleted)
+			{
+
+				std::cout  << currentVertex.m_name	  << "\t";
+				long idEdge;
+				for(size_t ed = 0; ed < currentVertex.m_edges.Size(); ++ed) 
+				{
+                    idEdge = currentVertex.m_edges[ed];
+					std::cout  << "(" << m_edges[idEdge].m_v1 << "," << m_edges[idEdge].m_v2 << ") "; 	  
+				}
+				std::cout << std::endl;
+			}			
+		}
+
+		std::cout << "vertices (" << m_nE << ")" << std::endl;
+		for (size_t e = 0; e < m_edges.size(); ++e) 
+		{
+			const GraphEdge & currentEdge = m_edges[e];
+			if (!m_edges[e].m_deleted)
+			{
+				std::cout  << currentEdge.m_name	  << "\t(" 
+						   << m_edges[e].m_v1		  << "," 
+						   << m_edges[e].m_v2		  << ") "<< std::endl;
+			}			
+		}
+	}
+	void Graph::Clear()
+	{
+		m_vertices.clear();
+		m_edges.clear();
+		m_nV = 0;
+        m_nE = 0;
+	}
+    
+    long Graph::ExtractCCs()
+	{
+        // all CCs to -1
+        for (size_t v = 0; v < m_vertices.size(); ++v) 
+		{
+			if (!m_vertices[v].m_deleted)
+			{
+				m_vertices[v].m_cc = -1;
+			}
+        }
+        
+        // we get the CCs
+        m_nCCs = 0;
+		long v2 = -1;
+        long idEdge;
+		std::vector<long> temp;
+        for (size_t v = 0; v < m_vertices.size(); ++v) 
+		{
+			if (!m_vertices[v].m_deleted && m_vertices[v].m_cc == -1) 
+			{
+                m_vertices[v].m_cc = static_cast<long>(m_nCCs);
+                temp.clear();
+                temp.push_back(m_vertices[v].m_name);
+                while (temp.size()) 
+				{
+                    long vertex = temp[temp.size()-1];
+                    temp.pop_back();                                        
+					for(size_t ed = 0; ed < m_vertices[vertex].m_edges.Size(); ++ed) 
+					{
+                        idEdge =  m_vertices[vertex].m_edges[ed];
+                        if (m_edges[idEdge].m_v1 == vertex) 
+						{
+                            v2 = m_edges[idEdge].m_v2;
+                        }
+                        else 
+						{
+                            v2 = m_edges[idEdge].m_v1;
+                        }
+                        if ( !m_vertices[v2].m_deleted && m_vertices[v2].m_cc == -1) 
+						{
+                            m_vertices[v2].m_cc = static_cast<long>(m_nCCs);
+                            temp.push_back(v2);
+                        }
+                    }
+                }
+                m_nCCs++;
+            }
+        }        
+        return static_cast<long>(m_nCCs);
+    }
+}

indra/libhacd/hacdGraph.h

@@ -0,0 +1,118 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_GRAPH_H
+#define HACD_GRAPH_H
+#include "hacdVersion.h"
+#include "hacdVector.h"
+#include "hacdICHull.h"
+#include <map>
+#include <vector>
+#include "hacdSArray.h"
+//#define HACD_PRECOMPUTE_CHULLS
+
+namespace HACD
+{
+    class GraphVertex;
+    class GraphEdge;
+    class Graph;
+	class HACD;
+       
+    class GraphVertex  
+    {
+    public:
+        bool                                                      AddEdge(long name) 
+                                                                  { 
+                                                                    m_edges.Insert(name); 
+                                                                    return true; 
+                                                                  }
+        bool                                                      DeleteEdge(long name);        
+                                                                  GraphVertex();
+                                                                  ~GraphVertex(){ delete m_convexHull;};      
+    private:
+        long                                                      m_name;
+        long                                                      m_cc;
+        SArray<long, SARRAY_DEFAULT_MIN_SIZE>                     m_edges;
+        bool                                                      m_deleted;
+        std::vector<long>	                                      m_ancestors;
+		SArray<DPoint, SARRAY_DEFAULT_MIN_SIZE>					  m_distPoints;
+
+        Real                                                      m_concavity;
+        double                                                    m_surf;
+        ICHull *                                                  m_convexHull;
+		SArray<unsigned long long, SARRAY_DEFAULT_MIN_SIZE>       m_boudaryEdges;
+        
+
+        friend class GraphEdge;
+        friend class Graph;
+		friend class HACD;
+    };
+    
+	class GraphEdge 
+    {
+    public:
+                                                                 GraphEdge();
+                                                                 ~GraphEdge()
+                                                                 {
+#ifdef HACD_PRECOMPUTE_CHULLS
+                                                                    delete m_convexHull;
+#endif
+                                                                 };
+    private:
+        long                                                     m_name;
+        long                                                     m_v1;
+        long                                                     m_v2;
+        double                                                   m_concavity;
+        Real                                                     m_error;
+#ifdef HACD_PRECOMPUTE_CHULLS
+        ICHull *                                                 m_convexHull;
+#endif
+        bool                                                     m_deleted;
+        
+        friend class GraphVertex;
+        friend class Graph;
+		friend class HACD;
+    };
+    
+    class Graph  
+    {
+    public:
+		size_t									                 GetNEdges() const { return m_nE;}
+		size_t									                 GetNVertices() const { return m_nV;}
+        bool                                                     EdgeCollapse(long v1, long v2);
+        long                                                     AddVertex();
+        long                                                     AddEdge(long v1, long v2);
+        bool                                                     DeleteEdge(long name);	
+        bool                                                     DeleteVertex(long name);
+        long                                                     GetEdgeID(long v1, long v2) const;
+		void									                 Clear();
+        void                                                     Print() const;
+        long                                                     ExtractCCs();
+        
+                                                                 Graph();
+        virtual                                                  ~Graph();      
+		void									                 Allocate(size_t nV, size_t nE);
+
+    private:
+        size_t                                                   m_nCCs;
+        size_t                                                   m_nV;
+        size_t                                                   m_nE;
+        std::vector<GraphEdge>                                   m_edges;
+        std::vector<GraphVertex>                                 m_vertices;
+
+		friend class HACD;
+    };
+}
+#endif

indra/libhacd/hacdHACD.h

@@ -0,0 +1,328 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_HACD_H
+#define HACD_HACD_H
+#include "hacdVersion.h"
+#include "hacdVector.h"
+#include "hacdGraph.h"
+#include "hacdICHull.h"
+#include <set>
+#include <vector>
+#include <queue>
+
+namespace HACD
+{
+    const double                                    sc_pi = 3.14159265;
+	class HACD;
+
+	// just to be able to set the capcity of the container
+	
+	template<class _Ty, class _Container = std::vector<_Ty>, class _Pr = std::less<typename _Container::value_type> >
+	class reservable_priority_queue: public std::priority_queue<_Ty, _Container, _Pr> 
+	{
+        typedef typename std::priority_queue<_Ty, _Container, _Pr>::size_type size_type;
+	public:
+                                                    reservable_priority_queue(size_type capacity = 0) { reserve(capacity); };
+		void										reserve(size_type capacity) { this->c.reserve(capacity); } 
+        size_type									capacity() const { return this->c.capacity(); } 
+	};
+	
+	//! priority queque element
+	class HACD;
+    class GraphEdgePriorityQueue
+    {
+		public:
+			//! Constructor
+			//! @param name edge's id
+			//! @param priority edge's priority
+													GraphEdgePriorityQueue(long name, Real priority)
+													{
+														m_name = name;
+														m_priority = priority;
+													}
+			//! Destructor
+													~GraphEdgePriorityQueue(void){}
+		private:
+			long									m_name;						//!< edge name
+			Real                                    m_priority;					//!< priority
+		//! Operator < for GraphEdgePQ
+        friend bool                                 operator<(const GraphEdgePriorityQueue & lhs, const GraphEdgePriorityQueue & rhs);
+		//! Operator > for GraphEdgePQ
+        friend bool                                 operator>(const GraphEdgePriorityQueue & lhs, const GraphEdgePriorityQueue & rhs);
+		friend class HACD;
+    };
+    inline bool										operator<(const GraphEdgePriorityQueue & lhs, const GraphEdgePriorityQueue & rhs)
+													{
+														return (lhs.m_priority<rhs.m_priority);
+													}
+    inline bool										operator>(const GraphEdgePriorityQueue & lhs, const GraphEdgePriorityQueue & rhs)
+													{
+														return lhs.m_priority>rhs.m_priority;
+													}
+    class ICallback
+    {
+    public:
+		virtual void operator()( char const *aMsg, double aProgress, double aConcavity, size_t aVertices) = 0;
+    };
+	
+	typedef ICallback* CallBackFunction;
+
+	//! Provides an implementation of the Hierarchical Approximate Convex Decomposition (HACD) technique described in "A Simple and Efficient Approach for 3D Mesh Approximate Convex Decomposition" Game Programming Gems 8 - Chapter 2.8, p.202. A short version of the chapter was published in ICIP09 and is available at ftp://ftp.elet.polimi.it/users/Stefano.Tubaro/ICIP_USB_Proceedings_v2/pdfs/0003501.pdf
+    class HACD
+	{            
+    public:
+		//! Gives the targeted number of triangles of the decimated mesh
+		//! @return targeted number of triangles of the decimated mesh
+		size_t										GetTargetNTrianglesDecimatedMesh() const { return m_targetNTrianglesDecimatedMesh;}
+        //! Sets the targeted number of triangles of the decimated mesh
+		//! @param targeted number of triangles of the decimated mesh
+		void										SetNTargetTrianglesDecimatedMesh(size_t  targetNTrianglesDecimatedMesh) { m_targetNTrianglesDecimatedMesh = targetNTrianglesDecimatedMesh;}
+		//! Gives the triangles partitionas an array of size m_nTriangles where the i-th element specifies the cluster to which belong the i-th triangle
+		//! @return triangles partition
+		const long * const							GetPartition() const { return m_partition;}
+        //! Sets the scale factor
+		//! @param scale scale factor
+		void										SetScaleFactor(double  scale) { m_scale = scale;}
+		//! Gives the scale factor
+		//! @return scale factor
+		const double								GetScaleFactor() const { return m_scale;}
+        //! Sets the threshold to detect small clusters. The threshold is expressed as a percentage of the total mesh surface (default 0.25%)
+		//! @param smallClusterThreshold threshold to detect small clusters
+		void										SetSmallClusterThreshold(double  smallClusterThreshold) { m_smallClusterThreshold = smallClusterThreshold;}
+		//! Gives the threshold to detect small clusters. The threshold is expressed as a percentage of the total mesh surface (default 0.25%)
+		//! @return threshold to detect small clusters
+		const double								GetSmallClusterThreshold() const { return m_smallClusterThreshold;}
+		//! Sets the call-back function
+		//! @param callBack pointer to the call-back function
+		void										SetCallBack(CallBackFunction  callBack) { m_callBack = callBack;}
+		//! Gives the call-back function
+		//! @return pointer to the call-back function
+		const CallBackFunction                      GetCallBack() const { return m_callBack;}
+        
+        //! Specifies whether faces points should be added when computing the concavity
+		//! @param addFacesPoints true = faces points should be added
+		void										SetAddFacesPoints(bool  addFacesPoints) { m_addFacesPoints = addFacesPoints;}
+		//! Specifies wheter faces points should be added when computing the concavity
+		//! @return true = faces points should be added
+		const bool									GetAddFacesPoints() const { return m_addFacesPoints;}
+        //! Specifies whether extra points should be added when computing the concavity
+		//! @param addExteraDistPoints true = extra points should be added
+		void										SetAddExtraDistPoints(bool  addExtraDistPoints) { m_addExtraDistPoints = addExtraDistPoints;}
+		//! Specifies wheter extra points should be added when computing the concavity
+		//! @return true = extra points should be added
+		const bool									GetAddExtraDistPoints() const { return m_addExtraDistPoints;}
+        //! Sets the points of the input mesh (Remark: the input points will be scaled and shifted. Use DenormalizeData() to invert those operations)
+		//! @param points pointer to the input points
+		void										SetPoints(Vec3<Real>  * points) { m_points = points;}
+		//! Gives the points of the input mesh (Remark: the input points will be scaled and shifted. Use DenormalizeData() to invert those operations)
+		//! @return pointer to the input points 
+		const Vec3<Real> *                          GetPoints() const { return m_points;}
+		//! Gives the points of the decimated mesh
+		//! @return pointer to the decimated mesh points 
+		const Vec3<Real> *                          GetDecimatedPoints() const { return m_pointsDecimated;}
+		//! Gives the triangles in the decimated mesh 
+		//! @return pointer to the decimated mesh triangles 
+		const Vec3<long>   *			            GetDecimatedTriangles() const { return m_trianglesDecimated;}        
+		//! Gives the number of points in the decimated mesh.
+		//! @return number of points the decimated mesh mesh
+		const size_t								GetNDecimatedPoints() const { return m_nPointsDecimated;}
+		//! Gives the number of triangles in the decimated mesh.
+		//! @return number of triangles the decimated mesh
+		const size_t								GetNDecimatedTriangles() const { return m_nTrianglesDecimated;}
+		//! Sets the triangles of the input mesh.
+		//! @param triangles points pointer to the input points
+		void										SetTriangles(Vec3<long>  * triangles) { m_triangles = triangles;}
+		//! Gives the triangles in the input mesh 
+		//! @return pointer to the input triangles 
+		const Vec3<long>   *			            GetTriangles() const { return m_triangles;}
+		//! Sets the number of points in the input mesh.
+		//! @param nPoints number of points the input mesh
+		void										SetNPoints(size_t nPoints) { m_nPoints = nPoints;}
+		//! Gives the number of points in the input mesh.
+		//! @return number of points the input mesh
+		const size_t								GetNPoints() const { return m_nPoints;}
+		//! Sets the number of triangles in the input mesh.
+		//! @param nTriangles number of triangles in the input mesh
+		void										SetNTriangles(size_t nTriangles) { m_nTriangles = nTriangles;}
+		//! Gives the number of triangles in the input mesh.
+		//! @return number of triangles the input mesh
+		const size_t								GetNTriangles() const { return m_nTriangles;}
+		//! Sets the minimum number of clusters to be generated.
+		//! @param nClusters minimum number of clusters
+		void										SetNClusters(size_t nClusters) { m_nMinClusters = nClusters;}
+		//! Gives the number of generated clusters.
+		//! @return number of generated clusters
+		const size_t								GetNClusters() const { return m_nClusters;}
+		//! Sets the maximum allowed concavity.
+		//! @param concavity maximum concavity
+		void										SetConcavity(double concavity) { m_concavity = concavity;}
+		//! Gives the maximum allowed concavity.
+		//! @return maximum concavity
+		double                                      GetConcavity() const { return m_concavity;}
+		//! Sets the maximum allowed distance to get CCs connected.
+		//! @param concavity maximum distance to get CCs connected
+		void										SetConnectDist(double ccConnectDist) { m_ccConnectDist = ccConnectDist;}
+		//! Gives the maximum allowed distance to get CCs connected.
+		//! @return maximum distance to get CCs connected
+		double                                      GetConnectDist() const { return m_ccConnectDist;}        
+        //! Sets the volume weight.
+		//! @param beta volume weight
+        void										SetVolumeWeight(double beta) { m_beta = beta;}
+		//! Gives the volume weight.
+		//! @return volume weight
+        double                                      GetVolumeWeight() const { return m_beta;}	
+		//! Sets the compacity weight (i.e. parameter alpha in ftp://ftp.elet.polimi.it/users/Stefano.Tubaro/ICIP_USB_Proceedings_v2/pdfs/0003501.pdf).
+		//! @param alpha compacity weight
+        void										SetCompacityWeight(double alpha) { m_alpha = alpha;}
+		//! Gives the compacity weight (i.e. parameter alpha in ftp://ftp.elet.polimi.it/users/Stefano.Tubaro/ICIP_USB_Proceedings_v2/pdfs/0003501.pdf).
+		//! @return compacity weight
+        double                                      GetCompacityWeight() const { return m_alpha;}	
+		//! Sets the maximum number of vertices for each generated convex-hull.
+		//! @param nVerticesPerCH maximum # vertices per CH
+        void										SetNVerticesPerCH(size_t nVerticesPerCH) { m_nVerticesPerCH = nVerticesPerCH;}
+		//! Gives the maximum number of vertices for each generated convex-hull.
+		//! @return maximum # vertices per CH
+		const size_t								GetNVerticesPerCH() const { return m_nVerticesPerCH;}
+		//! Gives the number of vertices for the cluster number numCH.
+		//! @return number of vertices
+		size_t                                      GetNPointsCH(size_t numCH) const;
+		//! Gives the number of triangles for the cluster number numCH.
+		//! @param numCH cluster's number
+		//! @return number of triangles
+        size_t                                      GetNTrianglesCH(size_t numCH) const;
+		//! Gives the vertices and the triangles of the cluster number numCH.
+		//! @param numCH cluster's number
+		//! @param points pointer to the vector of points to be filled
+		//! @param triangles pointer to the vector of triangles to be filled
+		//! @return true if sucess
+        bool                                        GetCH(size_t numCH, Vec3<Real> * const points, Vec3<long> * const triangles);     
+		//! Computes the HACD decomposition.
+		//! @param fullCH specifies whether to generate convex-hulls with a full or limited (i.e. < m_nVerticesPerCH) number of vertices
+        //! @param exportDistPoints specifies wheter distance points should ne exported or not (used only for debugging).
+		//! @return true if sucess
+        bool										Compute(bool fullCH=false, bool exportDistPoints=false);
+		//! Saves the generated convex-hulls in a VRML 2.0 file.
+		//! @param fileName the output file name
+		//! @param uniColor specifies whether the different convex-hulls should have the same color or not
+        //! @param numCluster specifies the cluster to be saved, if numCluster < 0 export all clusters
+        //! @return true if sucess
+		bool										Save(const char * fileName, bool uniColor, long numCluster=-1) const;
+		//! Shifts and scales to the data to have all the coordinates between 0.0 and 1000.0.
+		void										NormalizeData();
+		//! Inverse the operations applied by NormalizeData().
+		void										DenormalizeData();
+		//! Destructor.
+													~HACD(void);
+
+	private:
+        //! Constructor.
+													HACD(HeapManager * heapManager = 0);
+
+		//! Gives the edge index.
+		//! @param a first vertex id
+		//! @param b second vertex id
+		//! @return edge's index
+		static unsigned long long					GetEdgeIndex(unsigned long long a, unsigned long long b) 
+													{ 
+														if (a > b) return (a << 32) + b;
+														else	   return (b << 32) + a;
+													}
+		//! Computes the concavity of a cluster.
+		//! @param ch the cluster's convex-hull
+		//! @param distPoints the cluster's points 
+		//! @return cluster's concavity
+		double										Concavity(ICHull & ch, std::map<long, DPoint> & distPoints);
+		//! Computes the perimeter of a cluster.
+		//! @param triIndices the cluster's triangles
+		//! @param distPoints the cluster's points 
+		//! @return cluster's perimeter
+        double										ComputePerimeter(const std::vector<long> & triIndices) const;
+		//! Creates the Graph by associating to each mesh triangle a vertex in the graph and to each couple of adjacent triangles an edge in the graph.
+        void										CreateGraph();	
+		//! Initializes the graph costs and computes the vertices normals
+        void										InitializeDualGraph();
+		//! Computes the cost of an edge
+		//! @param e edge's id
+        void                                        ComputeEdgeCost(size_t e);
+		//! Initializes the priority queue
+		//! @param fast specifies whether fast mode is used
+		//! @return true if success
+        bool                                        InitializePriorityQueue();
+        //! Cleans the intersection between convex-hulls
+        void                                        CleanClusters();
+        //! Computes convex-hulls from partition information
+        //! @param fullCH specifies whether to generate convex-hulls with a full or limited (i.e. < m_nVerticesPerCH) number of vertices
+		void										ComputeConvexHulls(bool fullCH);
+		//! Simplifies the graph
+		//! @param fast specifies whether fast mode is used
+		void										Simplify();
+
+	private:
+        Vec3<long> *								m_trianglesDecimated;		//>! pointer the triangles array
+        Vec3<Real> *                                m_pointsDecimated;			//>! pointer the points array
+        Vec3<long> *								m_triangles;				//>! pointer the triangles array
+        Vec3<Real> *                                m_points;					//>! pointer the points array
+        Vec3<Real> *                                m_facePoints;               //>! pointer to the faces points array
+        Vec3<Real> *                                m_faceNormals;              //>! pointer to the faces normals array
+        Vec3<Real> *                                m_normals;					//>! pointer the normals array
+        Vec3<Real> *                                m_extraDistPoints;          //>! pointer to the faces points array
+        Vec3<Real> *                                m_extraDistNormals;         //>! pointer to the faces normals array
+        size_t										m_nTrianglesDecimated;		//>! number of triangles in the original mesh
+        size_t										m_nPointsDecimated;			//>! number of vertices in the original mesh
+        size_t										m_nTriangles;				//>! number of triangles in the original mesh
+        size_t										m_nPoints;					//>! number of vertices in the original mesh
+        size_t										m_nClusters;				//>! number of clusters
+        size_t										m_nMinClusters;				//>! minimum number of clusters
+        double										m_ccConnectDist;			//>! maximum allowed distance to connect CCs
+        double										m_concavity;				//>! maximum concavity
+		double										m_alpha;					//>! compacity weigth
+        double                                      m_beta;                     //>! volume weigth
+		double										m_gamma;					//>! computation cost
+        double										m_diag;						//>! length of the BB diagonal
+		double										m_scale;					//>! scale factor used for NormalizeData() and DenormalizeData()
+		double										m_flatRegionThreshold;		//>! threshhold to control the contirbution of flat regions concavity (default 1% of m_scale)
+		double										m_smallClusterThreshold;	//>! threshhold to detect small clusters (default 0.25% of the total mesh surface)
+		double										m_area;						//>! surface area
+		Vec3<Real>                                  m_barycenter;				//>! barycenter of the mesh
+        std::vector< long >                         m_cVertices;				//>! array of vertices each belonging to a different cluster
+        ICHull *                                    m_convexHulls;				//>! convex-hulls associated with the final HACD clusters
+		Graph										m_graph;					//>! simplification graph
+        size_t                                      m_nVerticesPerCH;			//>! maximum number of vertices per convex-hull
+		reservable_priority_queue<GraphEdgePriorityQueue, 
+            std::vector<GraphEdgePriorityQueue>,
+			std::greater<std::vector<GraphEdgePriorityQueue>::value_type> > m_pqueue;		//!> priority queue
+													HACD(const HACD & rhs);
+		CallBackFunction							m_callBack;					//>! call-back function
+		long *										m_partition;				//>! array of size m_nTriangles where the i-th element specifies the cluster to which belong the i-th triangle
+		size_t										m_targetNTrianglesDecimatedMesh; //>! specifies the target number of triangles in the decimated mesh. If set to 0 no decimation is applied.
+        HeapManager *                               m_heapManager;              //>! Heap Manager
+        bool                                        m_addFacesPoints;           //>! specifies whether to add faces points or not
+        bool                                        m_addExtraDistPoints;       //>! specifies whether to add extra points for concave shapes or not
+
+        friend HACD * const                         CreateHACD(HeapManager * heapManager = 0);
+        friend void                                 DestroyHACD(HACD * const hacd);
+	};
+    inline HACD * const CreateHACD(HeapManager * heapManager) 
+    { 
+        return new HACD(heapManager);
+    }
+    inline void DestroyHACD(HACD * const hacd) 
+    { 
+        delete hacd;
+    }
+}
+#endif
+

indra/libhacd/hacdICHull.h

@@ -0,0 +1,133 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_ICHULL_H
+#define HACD_ICHULL_H
+#include "hacdVersion.h"
+#include "hacdManifoldMesh.h"
+#include "hacdVector.h"
+#include <vector>
+#include <map>
+#include "hacdMicroAllocator.h"
+
+namespace HACD
+{
+	class DPoint;
+	class HACD;
+	//!	Incremental Convex Hull algorithm (cf. http://maven.smith.edu/~orourke/books/ftp.html ).
+	enum ICHullError
+	{
+		ICHullErrorOK = 0,
+		ICHullErrorCoplanarPoints,
+		ICHullErrorNoVolume,
+		ICHullErrorInconsistent,
+		ICHullErrorNotEnoughPoints
+	};
+	class ICHull
+	{
+		public:
+			static const double									sc_eps;
+			//! 
+            HeapManager * const     							GetHeapManager() const { return m_heapManager;}
+			//!
+			void												SetHeapManager(HeapManager * const heapManager)
+                                                                { 
+                                                                    m_heapManager = heapManager;
+                                                                    m_mesh.SetHeapManager(m_heapManager);
+                                                                }
+			//!
+			bool												IsFlat() { return m_isFlat;}
+			//! 
+            std::map<long, DPoint> *							GetDistPoints() const { return m_distPoints;}
+			//!
+			void												SetDistPoints(std::map<long, DPoint> * distPoints) { m_distPoints = distPoints;}
+			//! Returns the computed mesh
+            TMMesh &                                            GetMesh() { return m_mesh;}
+			//!	Add one point to the convex-hull    
+            bool                                                AddPoint(const Vec3<Real> & point) {return AddPoints(&point, 1);}
+			//!	Add one point to the convex-hull    
+            bool                                                AddPoint(const Vec3<Real> & point, long id);
+			//!	Add points to the convex-hull
+			bool                                                AddPoints(const Vec3<Real> * points, size_t nPoints);	
+			bool												AddPoints(std::vector< Vec3<Real> > points);
+			//!	
+			ICHullError                                         Process();
+            //! 
+            ICHullError                                         Process(unsigned long nPointsCH);
+            //!
+            double                                              ComputeVolume();
+			//!
+			double												ComputeArea();
+            //!
+            bool                                                IsInside(const Vec3<Real> & pt0, const double eps = 0.0);
+			//!
+			double												ComputeDistance(long name, const Vec3<Real> & pt, const Vec3<Real> & normal, bool & insideHull, bool updateIncidentPoints);
+            //!
+            const ICHull &                                      operator=(ICHull & rhs);        
+
+			//!	Constructor
+																ICHull(HeapManager * const heapManager=0);
+			//! Destructor
+			virtual                                             ~ICHull(void) {};
+
+		private:
+            //!	DoubleTriangle builds the initial double triangle.  It first finds 3 noncollinear points and makes two faces out of them, in opposite order. It then finds a fourth point that is not coplanar with that face.  The vertices are stored in the face structure in counterclockwise order so that the volume between the face and the point is negative. Lastly, the 3 newfaces to the fourth point are constructed and the data structures are cleaned up. 
+			ICHullError                                         DoubleTriangle();
+            //!	MakeFace creates a new face structure from three vertices (in ccw order).  It returns a pointer to the face.
+            CircularListElement<TMMTriangle> *                  MakeFace(CircularListElement<TMMVertex> * v0,  
+                                                                         CircularListElement<TMMVertex> * v1,
+                                                                         CircularListElement<TMMVertex> * v2,
+                                                                         CircularListElement<TMMTriangle> * fold);			
+            //!	
+            CircularListElement<TMMTriangle> *                  MakeConeFace(CircularListElement<TMMEdge> * e, CircularListElement<TMMVertex> * v);
+			//!	
+			bool                                                ProcessPoint();
+            //!
+            bool                                                ComputePointVolume(double &totalVolume, bool markVisibleFaces);
+            //!
+            bool                                                FindMaxVolumePoint();
+            //!	
+            bool                                                CleanEdges();
+            //!	
+            bool                                                CleanVertices(unsigned long & addedPoints);
+            //!	
+            bool                                                CleanTriangles();
+            //!	
+            bool                                                CleanUp(unsigned long & addedPoints);
+            //!
+            bool                                                MakeCCW(CircularListElement<TMMTriangle> * f,
+                                                                        CircularListElement<TMMEdge> * e, 
+                                                                        CircularListElement<TMMVertex> * v);
+			void												Clear(); 
+		private:
+            static const long                                   sc_dummyIndex;
+            static const double                                 sc_distMin;
+			TMMesh                                              m_mesh;
+            std::vector<CircularListElement<TMMEdge> *>         m_edgesToDelete;
+            std::vector<CircularListElement<TMMEdge> *>         m_edgesToUpdate;
+            std::vector<CircularListElement<TMMTriangle> *>     m_trianglesToDelete; 
+			std::map<long, DPoint> *							m_distPoints;            
+//			CircularListElement<TMMVertex> *					m_dummyVertex;
+			Vec3<Real>                                          m_normal;
+			bool												m_isFlat;
+            HeapManager *                                       m_heapManager;
+					                                           
+																ICHull(const ICHull & rhs);
+        
+			friend class HACD;
+	};
+
+}
+#endif

indra/libhacd/hacdManifoldMesh.cpp

@@ -0,0 +1,602 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "hacdManifoldMesh.h"
+using namespace std;
+
+
+namespace HACD
+{    
+    Material::Material(void)
+    {
+        m_diffuseColor.X()  = 0.5;
+        m_diffuseColor.Y()  = 0.5;
+        m_diffuseColor.Z()  = 0.5;
+        m_specularColor.X() = 0.5;
+        m_specularColor.Y() = 0.5;
+        m_specularColor.Z() = 0.5;
+        m_ambientIntensity  = 0.4;
+        m_emissiveColor.X() = 0.0;
+        m_emissiveColor.Y() = 0.0;
+        m_emissiveColor.Z() = 0.0;
+        m_shininess         = 0.4;
+        m_transparency      = 0.0;
+    }
+    
+	TMMVertex::TMMVertex(void)
+	{
+        Initialize();
+	}
+    void TMMVertex::Initialize()
+	{
+		m_name = 0;
+        m_id = 0;
+		m_duplicate = 0;
+		m_onHull = false;
+		m_tag = false;
+	}
+
+	TMMVertex::~TMMVertex(void)
+	{
+	}
+	TMMEdge::TMMEdge(void)
+	{
+        Initialize();
+	}
+    void TMMEdge::Initialize()
+	{
+        m_id = 0;
+		m_triangles[0] = m_triangles[1] = m_newFace = 0;
+		m_vertices[0] = m_vertices[1] = 0;
+    }
+	TMMEdge::~TMMEdge(void)
+	{
+	}
+    void TMMTriangle::Initialize()
+	{
+        m_id = 0;
+		for(int i = 0; i < 3; i++)
+		{
+			m_edges[i] = 0;
+			m_vertices[0] = 0;
+		}
+		m_visible = false;
+        m_incidentPoints.Initialize();
+    }
+	TMMTriangle::TMMTriangle(void)
+	{
+        Initialize();
+	}
+	TMMTriangle::~TMMTriangle(void)
+	{
+	}
+	TMMesh::TMMesh(HeapManager * const heapManager):
+        m_vertices(heapManager), 
+        m_edges(heapManager),
+        m_triangles(heapManager)
+	{
+		m_barycenter = Vec3<Real>(0,0,0);
+		m_diag = 1;
+        m_heapManager = heapManager;   
+	}
+	TMMesh::~TMMesh(void)
+	{
+	}
+
+	void TMMesh::Print() 
+	{
+		size_t nV = m_vertices.GetSize();
+		std::cout << "-----------------------------" << std::endl;
+        std::cout << "vertices (" << nV << ")" << std::endl;
+        for(size_t v = 0; v < nV; v++)
+		{
+			const TMMVertex & currentVertex = m_vertices.GetData();
+			std::cout  << currentVertex.m_id	  << ", " 
+		 			   << currentVertex.m_pos.X() << ", " 
+					   << currentVertex.m_pos.Y() << ", "
+					   << currentVertex.m_pos.Z() << std::endl;
+			m_vertices.Next();
+		}
+    
+
+		size_t nE = m_edges.GetSize();
+		std::cout << "edges (" << nE << ")" << std::endl;
+		for(size_t e = 0; e < nE; e++)
+		{
+			const TMMEdge & currentEdge = m_edges.GetData();
+            const CircularListElement<TMMVertex> * v0 = currentEdge.m_vertices[0];
+            const CircularListElement<TMMVertex> * v1 = currentEdge.m_vertices[1];
+            const CircularListElement<TMMTriangle> * f0 = currentEdge.m_triangles[0];
+            const CircularListElement<TMMTriangle> * f1 = currentEdge.m_triangles[1];
+
+			std::cout << "-> (" << v0->GetData().m_name << ", " << v1->GetData().m_name << ")" << std::endl; 
+            std::cout << "-> F0 (" << f0->GetData().m_vertices[0]->GetData().m_name << ", " 
+                                   << f0->GetData().m_vertices[1]->GetData().m_name << ", "
+                                   << f0->GetData().m_vertices[2]->GetData().m_name <<")" << std::endl; 
+            std::cout << "-> F1 (" << f1->GetData().m_vertices[0]->GetData().m_name << ", " 
+                                   << f1->GetData().m_vertices[1]->GetData().m_name << ", "
+                                   << f1->GetData().m_vertices[2]->GetData().m_name << ")" << std::endl;                         
+			m_edges.Next();
+		}
+		size_t nT = m_triangles.GetSize();
+		std::cout << "triangles (" << nT << ")" << std::endl;
+		for(size_t t = 0; t < nT; t++)
+		{
+			const TMMTriangle & currentTriangle = m_triangles.GetData();
+            const CircularListElement<TMMVertex> * v0 = currentTriangle.m_vertices[0];
+            const CircularListElement<TMMVertex> * v1 = currentTriangle.m_vertices[1];
+            const CircularListElement<TMMVertex> * v2 = currentTriangle.m_vertices[2];
+            const CircularListElement<TMMEdge> * e0 = currentTriangle.m_edges[0];
+            const CircularListElement<TMMEdge> * e1 = currentTriangle.m_edges[1];
+            const CircularListElement<TMMEdge> * e2 = currentTriangle.m_edges[2];
+            
+			std::cout << "-> (" << v0->GetData().m_name << ", " << v1->GetData().m_name << ", "<< v2->GetData().m_name << ")" << std::endl; 
+         
+            std::cout << "-> E0 (" << e0->GetData().m_vertices[0]->GetData().m_name << ", " 
+                                   << e0->GetData().m_vertices[1]->GetData().m_name << ")" << std::endl; 
+            std::cout << "-> E1 (" << e1->GetData().m_vertices[0]->GetData().m_name << ", " 
+                                   << e1->GetData().m_vertices[1]->GetData().m_name << ")" << std::endl;
+            std::cout << "-> E2 (" << e2->GetData().m_vertices[0]->GetData().m_name << ", " 
+                                   << e2->GetData().m_vertices[1]->GetData().m_name << ")" << std::endl;   
+			m_triangles.Next();
+		}   
+	}
+    bool TMMesh::Save(const char *fileName)
+    {
+        std::ofstream fout(fileName);
+        std::cout << "Saving " <<  fileName << std::endl;
+		if (SaveVRML2(fout))
+		{
+           fout.close();
+		   return true;
+		}
+        return false;
+    }
+    bool TMMesh::SaveVRML2(std::ofstream &fout)
+    {
+        return SaveVRML2(fout, Material());
+    }
+    bool TMMesh::SaveVRML2(std::ofstream &fout, const Material & material)
+    {
+        if (fout.is_open()) 
+        {
+            size_t nV = m_vertices.GetSize();
+            size_t nT = m_triangles.GetSize();            
+            fout <<"#VRML V2.0 utf8" << std::endl;	    	
+            fout <<"" << std::endl;
+            fout <<"# Vertices: " << nV << std::endl;		
+            fout <<"# Triangles: " << nT << std::endl;		
+            fout <<"" << std::endl;
+            fout <<"Group {" << std::endl;
+            fout <<"	children [" << std::endl;
+            fout <<"		Shape {" << std::endl;
+            fout <<"			appearance Appearance {" << std::endl;
+            fout <<"				material Material {" << std::endl;
+            fout <<"					diffuseColor "      << material.m_diffuseColor.X()      << " " 
+                                                            << material.m_diffuseColor.Y()      << " "
+                                                            << material.m_diffuseColor.Z()      << std::endl;  
+            fout <<"					ambientIntensity "  << material.m_ambientIntensity      << std::endl;
+            fout <<"					specularColor "     << material.m_specularColor.X()     << " " 
+                                                            << material.m_specularColor.Y()     << " "
+                                                            << material.m_specularColor.Z()     << std::endl; 
+            fout <<"					emissiveColor "     << material.m_emissiveColor.X()     << " " 
+                                                            << material.m_emissiveColor.Y()     << " "
+                                                            << material.m_emissiveColor.Z()     << std::endl; 
+            fout <<"					shininess "         << material.m_shininess             << std::endl;
+            fout <<"					transparency "      << material.m_transparency          << std::endl;
+            fout <<"				}" << std::endl;
+            fout <<"			}" << std::endl;
+            fout <<"			geometry IndexedFaceSet {" << std::endl;
+            fout <<"				ccw TRUE" << std::endl;
+            fout <<"				solid TRUE" << std::endl;
+            fout <<"				convex TRUE" << std::endl;
+            if (GetNVertices() > 0) {
+                fout <<"				coord DEF co Coordinate {" << std::endl;
+                fout <<"					point [" << std::endl;
+                for(size_t v = 0; v < nV; v++)
+                {
+                    TMMVertex & currentVertex = m_vertices.GetData();
+                    fout <<"						" << currentVertex.m_pos.X() << " " 
+                                                      << currentVertex.m_pos.Y() << " " 
+                                                      << currentVertex.m_pos.Z() << "," << std::endl;
+                    currentVertex.m_id = v;
+                    m_vertices.Next();
+                }
+                fout <<"					]" << std::endl;
+                fout <<"				}" << std::endl;
+            }
+            if (GetNTriangles() > 0) {
+                fout <<"				coordIndex [ " << std::endl;
+                for(size_t f = 0; f < nT; f++)
+                {
+                    TMMTriangle & currentTriangle = m_triangles.GetData();
+                    fout <<"						" << currentTriangle.m_vertices[0]->GetData().m_id << ", " 
+                                                      << currentTriangle.m_vertices[1]->GetData().m_id << ", "                                                  
+                                                      << currentTriangle.m_vertices[2]->GetData().m_id << ", -1," << std::endl;
+                    m_triangles.Next();
+                }
+                fout <<"				]" << std::endl;
+            }
+            fout <<"			}" << std::endl;
+            fout <<"		}" << std::endl;
+            fout <<"	]" << std::endl;
+            fout <<"}" << std::endl;	
+        }
+        return true;
+    }
+    void TMMesh::GetIFS(Vec3<Real> * const points, Vec3<long> * const triangles)
+    {
+        size_t nV = m_vertices.GetSize();
+        size_t nT = m_triangles.GetSize(); 
+
+        for(size_t v = 0; v < nV; v++)
+        {
+            points[v] = m_vertices.GetData().m_pos;
+            m_vertices.GetData().m_id = v;
+            m_vertices.Next();
+        }
+        for(size_t f = 0; f < nT; f++)
+        {
+            TMMTriangle & currentTriangle = m_triangles.GetData();
+            triangles[f].X() = static_cast<long>(currentTriangle.m_vertices[0]->GetData().m_id);
+            triangles[f].Y() = static_cast<long>(currentTriangle.m_vertices[1]->GetData().m_id);
+            triangles[f].Z() = static_cast<long>(currentTriangle.m_vertices[2]->GetData().m_id);
+            m_triangles.Next();
+        }
+    }
+	void TMMesh::Clear()
+    {
+		m_vertices.Clear();
+		m_edges.Clear();
+		m_triangles.Clear();
+	}
+    void TMMesh::Copy(TMMesh & mesh)
+    {
+        Clear();
+        // updating the id's
+        size_t nV = mesh.m_vertices.GetSize();
+        size_t nE = mesh. m_edges.GetSize();
+        size_t nT = mesh.m_triangles.GetSize();
+        for(size_t v = 0; v < nV; v++)
+        {
+            mesh.m_vertices.GetData().m_id = v;
+            mesh.m_vertices.Next();            
+        }
+        for(size_t e = 0; e < nE; e++)
+        {
+            mesh.m_edges.GetData().m_id = e;
+            mesh.m_edges.Next();
+            
+        }        
+        for(size_t f = 0; f < nT; f++)
+        {
+            mesh.m_triangles.GetData().m_id = f;
+            mesh.m_triangles.Next();
+        }
+        // copying data
+        m_vertices  = mesh.m_vertices;
+        m_edges     = mesh.m_edges;
+        m_triangles = mesh.m_triangles;
+        m_heapManager = mesh.m_heapManager;
+ 
+        // generating mapping
+        CircularListElement<TMMVertex> ** vertexMap     = new CircularListElement<TMMVertex> * [nV];
+        CircularListElement<TMMEdge> ** edgeMap         = new CircularListElement<TMMEdge> * [nE];
+        CircularListElement<TMMTriangle> ** triangleMap = new CircularListElement<TMMTriangle> * [nT];
+        for(size_t v = 0; v < nV; v++)
+        {
+            vertexMap[v] = m_vertices.GetHead();
+            m_vertices.Next();            
+        }
+        for(size_t e = 0; e < nE; e++)
+        {
+            edgeMap[e] = m_edges.GetHead();
+            m_edges.Next();            
+        }        
+        for(size_t f = 0; f < nT; f++)
+        {
+            triangleMap[f] = m_triangles.GetHead();
+            m_triangles.Next();
+        }
+        
+        // updating pointers
+        for(size_t v = 0; v < nV; v++)
+        {
+            if (vertexMap[v]->GetData().m_duplicate)
+            {
+                vertexMap[v]->GetData().m_duplicate = edgeMap[vertexMap[v]->GetData().m_duplicate->GetData().m_id];
+            }
+        }
+        for(size_t e = 0; e < nE; e++)
+        {
+            if (edgeMap[e]->GetData().m_newFace)
+            {
+                edgeMap[e]->GetData().m_newFace = triangleMap[edgeMap[e]->GetData().m_newFace->GetData().m_id];
+            }
+			if (nT > 0)
+			{
+				for(int f = 0; f < 2; f++)
+				{
+					if (edgeMap[e]->GetData().m_triangles[f])
+					{
+						edgeMap[e]->GetData().m_triangles[f] = triangleMap[edgeMap[e]->GetData().m_triangles[f]->GetData().m_id];
+					}
+				}            
+			}
+            for(int v = 0; v < 2; v++)
+            {
+                if (edgeMap[e]->GetData().m_vertices[v])
+                {
+                    edgeMap[e]->GetData().m_vertices[v] = vertexMap[edgeMap[e]->GetData().m_vertices[v]->GetData().m_id];
+                }
+            }
+        }        
+        for(size_t f = 0; f < nT; f++)
+        {
+			if (nE > 0)
+			{
+				for(int e = 0; e < 3; e++)
+				{
+					if (triangleMap[f]->GetData().m_edges[e])
+					{
+						triangleMap[f]->GetData().m_edges[e] = edgeMap[triangleMap[f]->GetData().m_edges[e]->GetData().m_id];
+					}
+				}            
+			}
+            for(int v = 0; v < 3; v++)
+            {
+                if (triangleMap[f]->GetData().m_vertices[v])
+                {
+                    triangleMap[f]->GetData().m_vertices[v] = vertexMap[triangleMap[f]->GetData().m_vertices[v]->GetData().m_id];
+                }
+            }
+        }
+        delete [] vertexMap;
+        delete [] edgeMap;
+        delete [] triangleMap;
+        
+    }
+	long  IntersectRayTriangle(const Vec3<double> & P0, const Vec3<double> & dir, 
+							   const Vec3<double> & V0, const Vec3<double> & V1, 
+							   const Vec3<double> & V2, double &t)
+	{
+        const double EPS = 1e-9;
+        const double EPS1 = 1e-6;
+		t = 0.0;
+		Vec3<double> edge1, edge2, edge3;
+		double det;
+		edge1 = V1 - V2;
+		edge2 = V2 - V0;
+		Vec3<double> pvec = dir ^ edge2;
+		det = edge1 * pvec;
+		if (det < EPS && det > -EPS)
+			return 0;
+		Vec3<double> tvec = P0 - V0;
+		Vec3<double> qvec = tvec ^ edge1;
+		t = (edge2 * qvec) / det;
+        if (t < 0.0)
+        {
+            return 0;
+        }
+		edge3 = V0 - V1;
+		Vec3<double> I(P0 + t * dir);
+		Vec3<double> s0 = (I-V0) ^ edge3;
+		Vec3<double> s1 = (I-V1) ^ edge1;
+		Vec3<double> s2 = (I-V2) ^ edge2;
+
+        Vec3<double> normal = edge1 ^ edge2;
+        double diff = normal.GetNorm() - s0.GetNorm() - s1.GetNorm() - s2.GetNorm();            
+
+        if (diff < EPS1 && diff > -EPS1)
+        {
+            return 1;			
+        }
+		return 0;
+	}
+
+    bool IntersectLineLine(const Vec3<double> & p1, const Vec3<double> & p2, 
+                          const Vec3<double> & p3, const Vec3<double> & p4,
+                          Vec3<double> & pa, Vec3<double> & pb, 
+                          double & mua, double & mub)
+    {
+        Vec3<double> p13,p43,p21;
+        double d1343,d4321,d1321,d4343,d2121;
+        double numer,denom;
+        
+        p13.X() = p1.X() - p3.X();
+        p13.Y() = p1.Y() - p3.Y();
+        p13.Z() = p1.Z() - p3.Z();
+        p43.X() = p4.X() - p3.X();
+        p43.Y() = p4.Y() - p3.Y();
+        p43.Z() = p4.Z() - p3.Z();
+        if (p43.X()==0.0 && p43.Y()==0.0 && p43.Z()==0.0)
+            return false;
+        p21.X() = p2.X() - p1.X();
+        p21.Y() = p2.Y() - p1.Y();
+        p21.Z() = p2.Z() - p1.Z();
+        if (p21.X()==0.0 && p21.Y()==0.0 && p21.Z()==0.0)
+            return false;
+        
+        d1343 = p13.X() * p43.X() + p13.Y() * p43.Y() + p13.Z() * p43.Z();
+        d4321 = p43.X() * p21.X() + p43.Y() * p21.Y() + p43.Z() * p21.Z();
+        d1321 = p13.X() * p21.X() + p13.Y() * p21.Y() + p13.Z() * p21.Z();
+        d4343 = p43.X() * p43.X() + p43.Y() * p43.Y() + p43.Z() * p43.Z();
+        d2121 = p21.X() * p21.X() + p21.Y() * p21.Y() + p21.Z() * p21.Z();
+        
+        denom = d2121 * d4343 - d4321 * d4321;
+        if (denom==0.0)
+            return false;
+        numer = d1343 * d4321 - d1321 * d4343;
+        
+        mua = numer / denom;
+        mub = (d1343 + d4321 * (mua)) / d4343;
+        
+        pa.X() = p1.X() + mua * p21.X();
+        pa.Y() = p1.Y() + mua * p21.Y();
+        pa.Z() = p1.Z() + mua * p21.Z();
+        pb.X() = p3.X() + mub * p43.X();
+        pb.Y() = p3.Y() + mub * p43.Y();
+        pb.Z() = p3.Z() + mub * p43.Z();
+        
+        return true;
+    }
+
+	long  IntersectRayTriangle2(const Vec3<double> & P0, const Vec3<double> & dir, 
+							   const Vec3<double> & V0, const Vec3<double> & V1, 
+							   const Vec3<double> & V2, double &r)
+	{
+		Vec3<double> u, v, n;          // triangle vectors
+		Vec3<double> w0, w;          // ray vectors
+		double     a, b;             // params to calc ray-plane intersect
+
+		// get triangle edge vectors and plane normal
+		u = V1 - V0;
+		v = V2 - V0;
+		n = u ^ v;             // cross product
+		if (n.GetNorm() == 0.0)            // triangle is degenerate
+			return -1;                 // do not deal with this case
+
+		w0 = P0 - V0;
+		a = - n * w0;
+		b =   n * dir;
+		if (fabs(b) <= 0.0) {     // ray is parallel to triangle plane
+			if (a == 0.0)                // ray lies in triangle plane
+				return 2;
+			else return 0;             // ray disjoint from plane
+		}
+
+		// get intersect point of ray with triangle plane
+		r = a / b;
+		if (r < 0.0)                   // ray goes away from triangle
+			return 0;                  // => no intersect
+		// for a segment, also test if (r > 1.0) => no intersect
+
+		Vec3<double> I = P0 + r * dir;           // intersect point of ray and plane
+
+		// is I inside T?
+		double uu, uv, vv, wu, wv, D;
+		uu = u * u;
+		uv = u * v;
+		vv = v * v;
+		w  = I - V0;
+		wu = w * u;
+		wv = w * v;
+		D = uv * uv - uu * vv;
+
+		// get and test parametric coords
+		double s, t;
+		s = (uv * wv - vv * wu) / D;
+		if (s < 0.0 || s > 1.0)        // I is outside T
+			return 0;
+		t = (uv * wu - uu * wv) / D;
+		if (t < 0.0 || (s + t) > 1.0)  // I is outside T
+			return 0;
+		return 1;                      // I is in T
+	}
+    
+    
+	bool TMMesh::CheckConsistancy()
+    {
+        size_t nE = m_edges.GetSize();
+        size_t nT = m_triangles.GetSize();
+        for(size_t e = 0; e < nE; e++)
+        {
+            for(int f = 0; f < 2; f++)
+            {
+                if (!m_edges.GetHead()->GetData().m_triangles[f])
+                {
+                    return false;
+                }
+            }            
+			m_edges.Next();
+        }        
+
+        for(size_t f = 0; f < nT; f++)
+        {
+            for(int e = 0; e < 3; e++)
+            {
+                int found = 0;
+                for(int k = 0; k < 2; k++)
+                {
+                    if (m_triangles.GetHead()->GetData().m_edges[e]->GetData().m_triangles[k] == m_triangles.GetHead())
+                    {
+                        found++;
+                    }
+                }
+                if (found != 1)
+                {
+                    return false;
+                }
+            }            
+			m_triangles.Next();
+        }
+
+		return true;
+    }
+	bool TMMesh::Normalize()
+    {
+        size_t nV = m_vertices.GetSize();
+		if (nV == 0)
+		{
+			return false;
+		}
+        m_barycenter = m_vertices.GetHead()->GetData().m_pos;
+		Vec3<Real> min = m_barycenter;
+		Vec3<Real> max = m_barycenter;
+		Real x, y, z;
+        for(size_t v = 1; v < nV; v++)
+        {
+			m_barycenter +=  m_vertices.GetHead()->GetData().m_pos;
+            x = m_vertices.GetHead()->GetData().m_pos.X();
+            y = m_vertices.GetHead()->GetData().m_pos.Y();
+            z = m_vertices.GetHead()->GetData().m_pos.Z();
+            if ( x < min.X()) min.X() = x;
+			else if ( x > max.X()) max.X() = x;
+            if ( y < min.Y()) min.Y() = y;
+			else if ( y > max.Y()) max.Y() = y;
+            if ( z < min.Z()) min.Z() = z;
+			else if ( z > max.Z()) max.Z() = z;
+			m_vertices.Next();
+        }
+		m_barycenter /= static_cast<Real>(nV);
+        m_diag = static_cast<Real>(0.001 * (max-min).GetNorm());
+        const Real invDiag = static_cast<Real>(1.0 / m_diag);
+		if (m_diag != 0.0)
+		{
+	        for(size_t v = 0; v < nV; v++)
+		    {
+				m_vertices.GetHead()->GetData().m_pos = (m_vertices.GetHead()->GetData().m_pos - m_barycenter) * invDiag;
+				m_vertices.Next();
+		    }
+		}
+		return true;
+	}
+	bool TMMesh::Denormalize()
+	{
+        size_t nV = m_vertices.GetSize();
+		if (nV == 0)
+		{
+			return false;
+		}
+		if (m_diag != 0.0)
+		{
+	        for(size_t v = 0; v < nV; v++)
+		    {
+				m_vertices.GetHead()->GetData().m_pos = m_vertices.GetHead()->GetData().m_pos * m_diag + m_barycenter;
+				m_vertices.Next();
+			}
+		}
+		return false;
+    }
+}

indra/libhacd/hacdManifoldMesh.h

@@ -0,0 +1,267 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+All rights reserved.
+
+
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_MANIFOLD_MESH_H
+#define HACD_MANIFOLD_MESH_H
+#include <iostream>
+#include <fstream>
+#include "hacdVersion.h"
+#include "hacdCircularList.h"
+#include "hacdVector.h"
+#include "hacdSArray.h"
+#include <set>
+#include "hacdMicroAllocator.h"
+namespace HACD
+{
+	class TMMTriangle;
+	class TMMEdge;
+    class TMMesh;
+    class ICHull;
+	class HACD;
+
+    class DPoint  
+    {
+    public:       
+																DPoint(long name=0, Real dist=0, bool computed=false, bool distOnly=false)
+																	:m_name(name),
+																	 m_dist(dist),
+																	 m_computed(computed),
+                                                                     m_distOnly(distOnly){};
+                                                				~DPoint(){};      
+    private:
+		long													m_name;
+		Real                                                    m_dist;
+		bool													m_computed;
+        bool                                                    m_distOnly;
+		friend class TMMTriangle;
+	    friend class TMMesh;
+		friend class GraphVertex;
+        friend class GraphEdge;
+        friend class Graph;
+		friend class ICHull;
+		friend class HACD;
+    };
+
+	//!	Vertex data structure used in a triangular manifold mesh (TMM).
+	class TMMVertex
+	{
+		public:
+            void                                                Initialize();                                                    
+																TMMVertex(void);
+                                                                ~TMMVertex(void);
+        
+        private:
+			Vec3<Real>											m_pos;
+			long												m_name;
+            size_t												m_id;
+			CircularListElement<TMMEdge> *						m_duplicate;		// pointer to incident cone edge (or NULL)
+			bool												m_onHull;
+			bool												m_tag;
+																TMMVertex(const TMMVertex & rhs);
+            
+			friend class HACD;            
+			friend class ICHull;
+            friend class TMMesh;
+            friend class TMMTriangle;
+            friend class TMMEdge;
+	};
+
+	//!	Edge data structure used in a triangular manifold mesh (TMM).
+	class TMMEdge
+	{		
+		public:
+            void                                                Initialize(); 
+																TMMEdge(void);
+																~TMMEdge(void);
+        private:
+            size_t												m_id;
+			CircularListElement<TMMTriangle> *					m_triangles[2];
+			CircularListElement<TMMVertex> *					m_vertices[2];
+			CircularListElement<TMMTriangle> *					m_newFace;
+
+
+																TMMEdge(const TMMEdge & rhs);
+                
+		friend class HACD;
+		friend class ICHull;
+        friend class TMMTriangle;
+        friend class TMMVertex;
+        friend class TMMesh;
+	};
+
+	//!	Triangle data structure used in a triangular manifold mesh (TMM).
+	class TMMTriangle
+	{
+		public:
+            void                                                Initialize(); 
+																TMMTriangle(void);
+																~TMMTriangle(void);
+        private:
+            size_t												m_id;
+			CircularListElement<TMMEdge> *						m_edges[3];
+			CircularListElement<TMMVertex> *					m_vertices[3];
+			SArray<long, SARRAY_DEFAULT_MIN_SIZE>				m_incidentPoints;
+			bool												m_visible;
+																
+																TMMTriangle(const TMMTriangle & rhs);
+        
+		friend class HACD;
+        friend class ICHull;
+        friend class TMMesh;
+        friend class TMMVertex;
+        friend class TMMEdge;
+	};
+    
+    class Material
+    {
+    public:    
+                                                                Material(void);
+                                                                ~Material(void){}        
+//    private:
+        Vec3<double>                                            m_diffuseColor;
+        double                                                  m_ambientIntensity;
+        Vec3<double>                                            m_specularColor;
+        Vec3<double>                                            m_emissiveColor;
+        double                                                  m_shininess;
+        double                                                  m_transparency;
+        
+        friend class TMMesh;
+		friend class HACD;
+    };
+
+	//!	triangular manifold mesh data structure.
+	class TMMesh
+	{
+		public:
+			//! 
+            HeapManager * const     							GetHeapManager() const { return m_heapManager;}
+			//!
+			void												SetHeapManager(HeapManager * const heapManager)
+                                                                { 
+                                                                    m_heapManager = heapManager;
+                                                                    m_vertices.SetHeapManager(m_heapManager);
+                                                                    m_edges.SetHeapManager(m_heapManager);
+                                                                    m_triangles.SetHeapManager(m_heapManager);
+                                                                }
+			//! Returns the number of vertices>
+			inline size_t										GetNVertices() const { return m_vertices.GetSize();}
+			//! Returns the number of edges
+			inline size_t										GetNEdges() const { return m_edges.GetSize();}
+			//! Returns the number of triangles
+			inline size_t										GetNTriangles() const { return m_triangles.GetSize();}
+            //! Returns the vertices circular list
+            inline const CircularList<TMMVertex> &              GetVertices() const { return m_vertices;}
+            //! Returns the edges circular list
+            inline const CircularList<TMMEdge> &				GetEdges() const { return m_edges;}
+            //! Returns the triangles circular list
+            inline const CircularList<TMMTriangle> &			GetTriangles() const { return m_triangles;}
+            //! Returns the vertices circular list
+            inline CircularList<TMMVertex> &                    GetVertices() { return m_vertices;}
+            //! Returns the edges circular list
+            inline CircularList<TMMEdge> &                      GetEdges() { return m_edges;}
+            //! Returns the triangles circular list
+            inline CircularList<TMMTriangle> &                  GetTriangles() { return m_triangles;}               
+			//! Add vertex to the mesh
+			CircularListElement<TMMVertex> *					AddVertex() {return m_vertices.Add();}
+			//! Add vertex to the mesh
+			CircularListElement<TMMEdge> *						AddEdge() {return m_edges.Add();}
+			//! Add vertex to the mesh
+			CircularListElement<TMMTriangle> *					AddTriangle() {return m_triangles.Add();}
+			//! Print mesh information 
+			void												Print();
+            //!
+            void                                                GetIFS(Vec3<Real> * const points, Vec3<long> * const triangles);
+            //! Save mesh 
+            bool												Save(const char *fileName);        
+            //! Save mesh to VRML 2.0 format 
+            bool												SaveVRML2(std::ofstream &fout);             
+            //! Save mesh to VRML 2.0 format 
+            bool												SaveVRML2(std::ofstream &fout, const Material & material);  			
+            //!  
+            void												Clear();
+            //!
+            void                                                Copy(TMMesh & mesh);
+			//!
+			bool												CheckConsistancy();
+			//!
+			bool												Normalize();
+			//!
+			bool												Denormalize();
+            //!	Constructor
+																TMMesh(HeapManager * const heapManager);
+			//! Destructor
+			virtual												~TMMesh(void);
+
+		private:
+			CircularList<TMMVertex>								m_vertices;
+			CircularList<TMMEdge>								m_edges;
+			CircularList<TMMTriangle>							m_triangles;
+			Real                                                m_diag;						//>! length of the BB diagonal
+			Vec3<Real>                                          m_barycenter;				//>! barycenter of the mesh
+            HeapManager *                                       m_heapManager;
+
+			// not defined
+																TMMesh(const TMMesh & rhs);
+			friend class ICHull;
+			friend class HACD;
+	};
+	//! IntersectRayTriangle(): intersect a ray with a 3D triangle
+	//!    Input:  a ray R, and a triangle T
+	//!    Output: *I = intersection point (when it exists)
+	//!             0 = disjoint (no intersect)
+	//!             1 = intersect in unique point I1
+	long														IntersectRayTriangle( const Vec3<double> & P0, const Vec3<double> & dir, 
+																					  const Vec3<double> & V0, const Vec3<double> & V1, 
+																					  const Vec3<double> & V2, double &t);
+
+	// intersect_RayTriangle(): intersect a ray with a 3D triangle
+	//    Input:  a ray R, and a triangle T
+	//    Output: *I = intersection point (when it exists)
+	//    Return: -1 = triangle is degenerate (a segment or point)
+	//             0 = disjoint (no intersect)
+	//             1 = intersect in unique point I1
+	//             2 = are in the same plane
+	long														IntersectRayTriangle2(const Vec3<double> & P0, const Vec3<double> & dir, 
+																					   const Vec3<double> & V0, const Vec3<double> & V1, 
+																					   const Vec3<double> & V2, double &r);
+
+    /*
+     Calculate the line segment PaPb that is the shortest route between
+     two lines P1P2 and P3P4. Calculate also the values of mua and mub where
+     Pa = P1 + mua (P2 - P1)
+     Pb = P3 + mub (P4 - P3)
+     Return FALSE if no solution exists.
+     */
+    bool                                                        IntersectLineLine(const Vec3<double> & p1, const Vec3<double> & p2, 
+                                                                                  const Vec3<double> & p3, const Vec3<double> & p4,
+                                                                                  Vec3<double> & pa, Vec3<double> & pb, 
+                                                                                  double & mua, double &mub);
+}
+#endif

indra/libhacd/hacdMeshDecimator.cpp

@@ -0,0 +1,684 @@
+#include <sstream>
+#include <iostream>
+#include <stdlib.h>
+#include <algorithm>
+#include <vector>
+#include "hacdMeshDecimator.h"
+
+namespace HACD
+{
+	MeshDecimator::MeshDecimator(void)
+	{
+		m_triangles					= 0;
+		m_points   					= 0;
+		m_nPoints					= 0;
+		m_nInitialTriangles 		= 0;
+		m_nVertices					= 0;
+		m_nTriangles				= 0;
+		m_nEdges					= 0;
+		m_trianglesTags				= 0;
+		m_ecolManifoldConstraint	= true;
+		m_callBack					= 0;
+	}
+
+	MeshDecimator::~MeshDecimator(void)
+	{
+		ReleaseMemory();
+	}
+	void MeshDecimator::ReleaseMemory()
+	{
+		delete [] m_trianglesTags;
+        std::vector< MDVertex > emptyVertices(0);
+		m_vertices.swap(emptyVertices);
+        std::vector<MDEdge> emptyEdges(0);
+		m_edges.swap(emptyEdges);
+		m_pqueue = 		std::priority_queue<
+				 MDEdgePriorityQueue, 
+				 std::vector<MDEdgePriorityQueue>, 
+				 std::less<MDEdgePriorityQueue> >();
+		m_triangles					= 0;
+		m_points   					= 0;
+		m_nPoints					= 0;
+		m_nInitialTriangles 		= 0;
+		m_nVertices					= 0;
+		m_nTriangles				= 0;
+		m_nEdges					= 0;
+		m_trianglesTags				= 0;
+	}
+	void MeshDecimator::Initialize(size_t nVertices, size_t nTriangles,   Vec3<Float> * points,  Vec3<long> * triangles)
+	{
+		m_nVertices			= nVertices;
+		m_nTriangles		= nTriangles;
+		m_nInitialTriangles = nTriangles;
+		m_points			= points;
+		m_nPoints			= nVertices;
+		m_triangles			= triangles;
+		m_trianglesTags		= new bool[m_nTriangles];
+		m_edges.reserve(3*m_nTriangles);
+		m_vertices.resize(m_nVertices);
+		for(size_t v = 0; v < m_nVertices; ++v)
+		{
+			m_vertices[v].m_tag = true;
+		}
+		long tri[3];
+		MDEdge edge;
+		edge.m_tag = true;
+		edge.m_onBoundary = true;
+        long nEdges = 0;
+		long idEdge;
+		long nTris = static_cast<long>(m_nTriangles);
+		for(long t = 0; t < nTris; ++t)
+		{
+			tri[0] = m_triangles[t].X();
+			tri[1] = m_triangles[t].Y();
+			tri[2] = m_triangles[t].Z();
+			m_trianglesTags[t] = true;
+			for(int k = 0; k < 3; ++k)
+			{
+				edge.m_v1 = tri[k];
+				edge.m_v2 = tri[(k+1)%3];
+				m_vertices[edge.m_v1].m_triangles.Insert(t);
+				idEdge = GetEdge(edge.m_v1, edge.m_v2);
+				if (idEdge == -1)
+				{
+					m_edges.push_back(edge);
+					m_vertices[edge.m_v1].m_edges.Insert(nEdges);
+					m_vertices[edge.m_v2].m_edges.Insert(nEdges);
+					++nEdges;
+				}
+				else
+				{
+					m_edges[idEdge].m_onBoundary = false;
+				}
+			}
+		}
+        m_nEdges = static_cast<size_t>(nEdges);
+		for(size_t v = 0; v < m_nVertices; ++v)
+		{
+			m_vertices[v].m_onBoundary = false;
+			for(size_t itE = 0; itE < m_vertices[v].m_edges.Size(); ++itE)
+			{
+				idEdge = m_vertices[v].m_edges[itE];
+				if (m_edges[idEdge].m_onBoundary)
+				{
+					m_vertices[v].m_onBoundary = true;
+					break;
+				}
+			}
+		}
+	}
+	long MeshDecimator::GetTriangle(long v1, long v2, long v3) const
+	{
+		long i, j, k;
+        long idTriangle;
+		for(size_t it = 0; it < m_vertices[v1].m_triangles.Size(); ++it)
+		{
+            idTriangle = m_vertices[v1].m_triangles[it];
+			i = m_triangles[idTriangle].X();
+			j = m_triangles[idTriangle].Y();
+			k = m_triangles[idTriangle].Z();
+			if ( (i==v1 && j==v2 && k==v3) || (i==v1 && j==v3 && k==v2) ||
+				 (i==v2 && j==v1 && k==v3) || (i==v2 && j==v3 && k==v1) ||
+				 (i==v3 && j==v2 && k==v1) || (i==v3 && j==v1 && k==v2)  )
+			{
+				return idTriangle;
+			}
+		}
+		return -1;
+	}
+	long MeshDecimator::GetEdge(long v1, long v2) const
+	{
+		long idEdge;
+        for(size_t it = 0; it < m_vertices[v1].m_edges.Size(); ++it)
+		{
+            idEdge = m_vertices[v1].m_edges[it];
+			if ( (m_edges[idEdge].m_v1==v1 && m_edges[idEdge].m_v2==v2) || 
+				 (m_edges[idEdge].m_v1==v2 && m_edges[idEdge].m_v2==v1) )
+			{
+				return idEdge;
+			}
+		}
+		return -1;
+	}
+	void MeshDecimator::EdgeCollapse(long v1, long v2)
+	{
+		long u, w;
+		int shift;
+		long idTriangle;
+		for(size_t itT = 0; itT < m_vertices[v2].m_triangles.Size(); ++itT)
+		{
+            idTriangle =  m_vertices[v2].m_triangles[itT];
+			if (m_triangles[idTriangle].X() == v2)
+			{
+				shift = 0;
+				u = m_triangles[idTriangle].Y();
+				w = m_triangles[idTriangle].Z();
+			}
+			else if (m_triangles[idTriangle].Y() == v2)
+			{
+				shift = 1;
+				u = m_triangles[idTriangle].X();
+				w = m_triangles[idTriangle].Z();
+			}
+			else
+			{
+				shift = 2;
+				u = m_triangles[idTriangle].X();
+				w = m_triangles[idTriangle].Y();
+			}
+
+			if ((u == v1) || (w == v1))
+			{
+				m_trianglesTags[idTriangle] = false;
+				m_vertices[u].m_triangles.Erase(idTriangle);						
+				m_vertices[w].m_triangles.Erase(idTriangle);
+				m_nTriangles--;
+			}
+			else if (GetTriangle(v1, u, w) == -1)
+			{
+				m_vertices[v1].m_triangles.Insert(idTriangle);
+				m_triangles[idTriangle][shift] = v1;
+			}
+			else
+			{
+				m_trianglesTags[idTriangle] = false;
+				m_vertices[u].m_triangles.Erase(idTriangle);						
+				m_vertices[w].m_triangles.Erase(idTriangle);
+				m_nTriangles--;
+			}
+		}
+        long idEdge;
+		for(size_t itE = 0; itE < m_vertices[v2].m_edges.Size(); ++itE)
+		{
+            idEdge = m_vertices[v2].m_edges[itE];
+			w = (m_edges[idEdge].m_v1 == v2)? m_edges[idEdge].m_v2 : m_edges[idEdge].m_v1;
+			if (w==v1)
+			{
+				m_edges[idEdge].m_tag = false;
+				m_vertices[w].m_edges.Erase(idEdge);
+				m_nEdges--;
+			}
+			else if ( GetEdge(v1, w) == -1)
+			{
+				if (m_edges[idEdge].m_v1 == v2)	m_edges[idEdge].m_v1 = v1;
+				else							m_edges[idEdge].m_v2 = v1;
+				m_vertices[v1].m_edges.Insert(idEdge);			
+			}
+			else
+			{
+				m_edges[idEdge].m_tag = false;
+				m_vertices[w].m_edges.Erase(idEdge);
+				m_nEdges--;
+			}
+		}
+		m_vertices[v2].m_tag = false;
+		m_nVertices--;
+		// update boundary edges
+		SArray<long, 64> incidentVertices;
+		incidentVertices.PushBack(v1);
+		for(size_t itE = 0; itE < m_vertices[v1].m_edges.Size(); ++itE)
+		{
+			incidentVertices.PushBack((m_edges[idEdge].m_v1!= v1)?m_edges[idEdge].m_v1:m_edges[idEdge].m_v2);
+            idEdge = m_vertices[v1].m_edges[itE];
+			m_edges[idEdge].m_onBoundary = (IsBoundaryEdge(m_edges[idEdge].m_v1, m_edges[idEdge].m_v2) != -1);
+		}		
+		// update boundary vertices
+		long idVertex;
+		for(size_t itV = 0; itV < incidentVertices.Size(); ++itV)
+		{
+			idVertex = incidentVertices[itV];
+			m_vertices[idVertex].m_onBoundary = false;
+			for(size_t itE = 0; itE < m_vertices[idVertex].m_edges.Size(); ++itE)
+			{
+				idEdge = m_vertices[idVertex].m_edges[itE];
+				if (m_edges[idEdge].m_onBoundary)
+				{
+					m_vertices[idVertex].m_onBoundary = true;
+					break;
+				}
+			}
+		}		
+	}
+	long MeshDecimator::IsBoundaryEdge(long v1, long v2) const
+	{
+		long commonTri = -1;
+		long itTriangle1, itTriangle2;
+		for(size_t itT1 = 0; itT1 < m_vertices[v1].m_triangles.Size(); ++itT1)
+		{
+            itTriangle1 = m_vertices[v1].m_triangles[itT1];
+			for(size_t itT2 = 0; itT2 < m_vertices[v2].m_triangles.Size(); ++itT2)
+			{
+                itTriangle2 = m_vertices[v2].m_triangles[itT2];
+				if (itTriangle1 == itTriangle2)
+				{
+					if (commonTri == -1)
+					{
+						commonTri = itTriangle1;
+					}
+					else
+					{
+						return -1;
+					}
+				}
+			}
+		}
+		return commonTri;
+	}
+	bool MeshDecimator::IsBoundaryVertex(long v) const
+	{
+		long idEdge;
+		for(size_t itE = 0; itE < m_vertices[v].m_edges.Size(); ++itE)
+		{
+            idEdge =  m_vertices[v].m_edges[itE];
+			if ( IsBoundaryEdge(m_edges[idEdge].m_v1, m_edges[idEdge].m_v2) != -1) return true;
+		}
+		return false;
+	}
+
+	void MeshDecimator::GetMeshData(Vec3<Float> * points, Vec3<long> * triangles) const
+	{
+		long * map = new long [m_nPoints];
+		long counter = 0;
+		for (size_t v = 0; v < m_nPoints; ++v)
+		{
+			if ( m_vertices[v].m_tag )
+			{
+				points[counter] = m_points[v];
+				map[v] = counter++;
+			}
+		}
+		counter = 0;
+		for (size_t t = 0; t < m_nInitialTriangles; ++t)
+		{
+			if ( m_trianglesTags[t] )
+			{
+				triangles[counter].X() = map[m_triangles[t].X()];
+				triangles[counter].Y() = map[m_triangles[t].Y()];
+				triangles[counter].Z() = map[m_triangles[t].Z()];
+				counter++;
+			}
+		}
+		delete [] map;
+	}
+
+	void MeshDecimator::InitializeQEM()
+	{
+		Vec3<Float> coordMin = m_points[0];
+		Vec3<Float> coordMax = m_points[0];
+		Vec3<Float> coord;
+		for (size_t p = 1; p < m_nPoints ; ++p) 
+		{
+			coord = m_points[p];
+			if (coordMin.X() > coord.X()) coordMin.X() = coord.X();
+			if (coordMin.Y() > coord.Y()) coordMin.Y() = coord.Y();
+			if (coordMin.Z() > coord.Z()) coordMin.Z() = coord.Z();
+			if (coordMax.X() < coord.X()) coordMax.X() = coord.X();
+			if (coordMax.Y() < coord.Y()) coordMax.Y() = coord.Y();
+			if (coordMax.Z() < coord.Z()) coordMax.Z() = coord.Z();
+		}
+		coordMax -= coordMin;
+		m_diagBB = coordMax.GetNorm();
+
+		long i, j, k;
+		Vec3<Float> n;	
+		Float d = 0;
+		Float area = 0;
+		for(size_t v = 0; v < m_nPoints; ++v)
+		{
+			memset(m_vertices[v].m_Q, 0, 10 * sizeof(Float));
+            long idTriangle;
+			for(size_t itT = 0; itT < m_vertices[v].m_triangles.Size(); ++itT)
+			{
+                idTriangle = m_vertices[v].m_triangles[itT];
+				i = m_triangles[idTriangle].X();
+				j = m_triangles[idTriangle].Y();
+				k = m_triangles[idTriangle].Z();
+				n = (m_points[j] - m_points[i])^(m_points[k] - m_points[i]);
+				area = n.GetNorm();
+				n.Normalize();
+				d = - (m_points[v] * n);
+				m_vertices[v].m_Q[0] += area * (n.X() * n.X());
+				m_vertices[v].m_Q[1] += area * (n.X() * n.Y());
+				m_vertices[v].m_Q[2] += area * (n.X() * n.Z());
+				m_vertices[v].m_Q[3] += area * (n.X() * d);
+				m_vertices[v].m_Q[4] += area * (n.Y() * n.Y());
+				m_vertices[v].m_Q[5] += area * (n.Y() * n.Z());
+				m_vertices[v].m_Q[6] += area * (n.Y() * d);
+				m_vertices[v].m_Q[7] += area * (n.Z() * n.Z());
+				m_vertices[v].m_Q[8] += area * (n.Z() * d);
+				m_vertices[v].m_Q[9] += area * (d     * d);
+			}
+		}
+		Vec3<Float> u1, u2;
+		const Float w = static_cast<Float>(1000);
+		long t, v1, v2, v3;
+		for(size_t e = 0; e < m_edges.size(); ++e)
+		{
+			v1 = m_edges[e].m_v1;
+			v2 = m_edges[e].m_v2;
+			t = IsBoundaryEdge(v1, v2);
+			if (t != -1)
+			{
+				if      (m_triangles[t].X() != v1 && m_triangles[t].X() != v2) v3 = m_triangles[t].X();
+				else if (m_triangles[t].Y() != v1 && m_triangles[t].Y() != v2) v3 = m_triangles[t].Y();
+				else														   v3 = m_triangles[t].Z();
+				u1 = m_points[v2] - m_points[v1];
+				u2 = m_points[v3] - m_points[v1];
+				area = w * (u1^u2).GetNorm();
+				u1.Normalize();
+				n =  u2 - (u2 * u1) * u1;
+				n.Normalize();
+
+				d = - (m_points[v1] * n);
+				m_vertices[v1].m_Q[0] += area * (n.X() * n.X());
+				m_vertices[v1].m_Q[1] += area * (n.X() * n.Y());
+				m_vertices[v1].m_Q[2] += area * (n.X() * n.Z());
+				m_vertices[v1].m_Q[3] += area * (n.X() * d);
+				m_vertices[v1].m_Q[4] += area * (n.Y() * n.Y());
+				m_vertices[v1].m_Q[5] += area * (n.Y() * n.Z());
+				m_vertices[v1].m_Q[6] += area * (n.Y() * d);
+				m_vertices[v1].m_Q[7] += area * (n.Z() * n.Z());
+				m_vertices[v1].m_Q[8] += area * (n.Z() * d);
+				m_vertices[v1].m_Q[9] += area * (d * d);
+
+				d = - (m_points[v2] * n);
+				m_vertices[v2].m_Q[0] += area * (n.X() * n.X());
+				m_vertices[v2].m_Q[1] += area * (n.X() * n.Y());
+				m_vertices[v2].m_Q[2] += area * (n.X() * n.Z());
+				m_vertices[v2].m_Q[3] += area * (n.X() * d);
+				m_vertices[v2].m_Q[4] += area * (n.Y() * n.Y());
+				m_vertices[v2].m_Q[5] += area * (n.Y() * n.Z());
+				m_vertices[v2].m_Q[6] += area * (n.Y() * d);
+				m_vertices[v2].m_Q[7] += area * (n.Z() * n.Z());
+				m_vertices[v2].m_Q[8] += area * (n.Z() * d);
+				m_vertices[v2].m_Q[9] += area * (d * d);
+			}
+		}
+	}
+	void MeshDecimator::InitializePriorityQueue()
+	{	
+		double progressOld = -1.0;
+		double progress = 0.0;    
+		char msg[1024];
+		double ptgStep = 1.0;
+		long v1, v2;
+		MDEdgePriorityQueue pqEdge;
+		size_t nE = m_edges.size();
+		for(size_t e = 0; e < nE; ++e)
+		{
+			progress = e * 100.0 / nE;
+			if (fabs(progress-progressOld) > ptgStep && m_callBack)
+			{
+				sprintf(msg, "%3.2f %% \t \t \r", progress);
+				(*m_callBack)(msg, progress, 0.0, m_nVertices);
+				progressOld = progress;
+			}
+
+			if (m_edges[e].m_tag)
+			{
+				v1 = m_edges[e].m_v1;
+				v2 = m_edges[e].m_v2;
+				if ( (!m_ecolManifoldConstraint) || (ManifoldConstraint(v1, v2)))
+				{
+					pqEdge.m_qem = m_edges[e].m_qem = ComputeEdgeCost(v1, v2, m_edges[e].m_pos);
+					pqEdge.m_name = static_cast<long>(e);
+					m_pqueue.push(pqEdge);
+				}
+			}
+		}
+	}
+	double MeshDecimator::ComputeEdgeCost(long v1, long v2, Vec3<Float> & newPos) const
+	{
+		double Q[10];
+		double M[12];
+		Vec3<double> pos;
+		for(int i = 0; i < 10; ++i) Q[i] = m_vertices[v1].m_Q[i] + m_vertices[v2].m_Q[i];
+		M[0] = Q[0]; // (0, 0)
+		M[1] = Q[1]; // (0, 1) 
+		M[2] = Q[2]; // (0, 2)
+		M[3] = Q[3]; // (0, 3)
+		M[4] = Q[1]; // (1, 0)
+		M[5] = Q[4]; // (1, 1)
+		M[6] = Q[5]; // (1, 2)
+		M[7] = Q[6]; // (1, 3)
+		M[8] = Q[2]; // (2, 0)
+		M[9] = Q[5]; // (2, 1)
+		M[10] = Q[7]; // (2, 2);
+		M[11] = Q[8]; // (2, 3);
+		double det =   M[0] * M[5] * M[10] + M[1] * M[6] * M[8] + M[2] * M[4] * M[9]   
+					 - M[0] * M[6] * M[9]  - M[1] * M[4] * M[10]- M[2] * M[5] * M[8]; 
+		if (det != 0.0)
+		{
+			double d = 1.0 / det;
+			pos.X() = d * (M[1]*M[7]*M[10] + M[2]*M[5]*M[11] + M[3]*M[6]*M[9]
+						  -M[1]*M[6]*M[11] - M[2]*M[7]*M[9]  - M[3]*M[5]*M[10]);
+			pos.Y() = d * (M[0]*M[6]*M[11] + M[2]*M[7]*M[8]  + M[3]*M[4]*M[10]
+						  -M[0]*M[7]*M[10] - M[2]*M[4]*M[11] - M[3]*M[6]*M[8]);
+			pos.Z() = d * (M[0]*M[7]*M[9]  + M[1]*M[4]*M[11] + M[3]*M[5]*M[8]
+						  -M[0]*M[5]*M[11] - M[1]*M[7]*M[8]  - M[3]*M[4]*M[9]);
+	  		newPos.X() = static_cast<Float>(pos.X());
+			newPos.Y() = static_cast<Float>(pos.Y());
+			newPos.Z() = static_cast<Float>(pos.Z());
+		}
+		else
+		{
+			const Float w = static_cast<Float>(0.5f);
+			newPos = w * m_points[v1] + w * m_points[v2];
+	  		pos.X() = static_cast<double>(newPos.X());
+			pos.Y() = static_cast<double>(newPos.Y());
+			pos.Z() = static_cast<double>(newPos.Z());
+		}
+
+		double qem = pos.X()  * (Q[0] * pos.X() + Q[1] * pos.Y() + Q[2] * pos.Z() + Q[3]) +  
+					 pos.Y()  * (Q[1] * pos.X() + Q[4] * pos.Y() + Q[5] * pos.Z() + Q[6]) +
+					 pos.Z()  * (Q[2] * pos.X() + Q[5] * pos.Y() + Q[7] * pos.Z() + Q[8]) +
+								(Q[3] * pos.X() + Q[6] * pos.Y() + Q[8] * pos.Z() + Q[9]) ;
+
+		Vec3<Float> d1;
+		Vec3<Float> d2;
+		Vec3<Float> n1;
+		Vec3<Float> n2;
+        Vec3<Float> oldPosV1 =  m_points[v1];
+        Vec3<Float> oldPosV2 =  m_points[v2];
+
+		SArray<long, SARRAY_DEFAULT_MIN_SIZE> triangles = m_vertices[v1].m_triangles;
+		long idTriangle;
+		for(size_t itT = 0; itT < m_vertices[v2].m_triangles.Size(); ++itT)
+		{
+            idTriangle = m_vertices[v2].m_triangles[itT];
+			triangles.Insert(idTriangle);
+		}
+		long a[3];
+        for(size_t itT = 0; itT != triangles.Size(); ++itT)
+		{
+            idTriangle = triangles[itT];
+			a[0] = m_triangles[idTriangle].X();
+			a[1] = m_triangles[idTriangle].Y();
+			a[2] = m_triangles[idTriangle].Z();
+
+			d1 = m_points[a[1]] - m_points[a[0]];
+			d2 = m_points[a[2]] - m_points[a[0]];
+			n1 = d1^d2;
+
+            m_points[v1] = newPos;
+            m_points[v2] = newPos;
+
+			d1 = m_points[a[1]] - m_points[a[0]];
+			d2 = m_points[a[2]] - m_points[a[0]];
+            n2 = d1^d2;
+
+            m_points[v1] = oldPosV1;
+            m_points[v2] = oldPosV2;
+
+            n1.Normalize();
+            n2.Normalize();
+			if (n1*n2 < 0.0) 
+            {
+                return std::numeric_limits<double>::max();
+            }
+		}
+		if ( m_ecolManifoldConstraint && !ManifoldConstraint(v1, v2))
+		{
+			return std::numeric_limits<double>::max();
+		}
+		return qem;
+	}
+	bool MeshDecimator::ManifoldConstraint(long v1, long v2) const
+	{
+		std::set<long> vertices;
+		long a, b;
+        long idEdge1;
+        long idEdge2;
+		long idEdgeV1V2;
+		for(size_t itE1 = 0; itE1 < m_vertices[v1].m_edges.Size(); ++itE1)
+		{
+            idEdge1 = m_vertices[v1].m_edges[itE1];
+			a = (m_edges[idEdge1].m_v1 == v1) ? m_edges[idEdge1].m_v2 : m_edges[idEdge1].m_v1;
+			vertices.insert(a);
+			if (a != v2)
+			{
+				for(size_t itE2 = 0; itE2 < m_vertices[v2].m_edges.Size(); ++itE2)
+				{
+                    idEdge2 = m_vertices[v2].m_edges[itE2];
+					b = (m_edges[idEdge2].m_v1 == v2) ? m_edges[idEdge2].m_v2 : m_edges[idEdge2].m_v1;
+					vertices.insert(b);
+					if ( a==b )
+					{
+						if (GetTriangle(v1, v2, a) == -1)
+						{
+							return false;
+						}
+					}
+				}
+			}
+			else
+			{
+				idEdgeV1V2 = idEdge1;
+			}
+		}
+		if (vertices.size() <= 4 || ( m_vertices[v1].m_onBoundary && m_vertices[v2].m_onBoundary && !m_edges[idEdgeV1V2].m_onBoundary))
+		{
+			return false;
+		}
+		return true;
+	}
+	bool MeshDecimator::EdgeCollapse(double & qem)
+	{
+		MDEdgePriorityQueue currentEdge;
+		long v1, v2;
+		bool done = false;
+		do
+		{
+			done = false;
+			if (m_pqueue.size() == 0)
+			{
+				done = true;
+				break;
+			}
+			else
+			{
+				currentEdge = m_pqueue.top();
+				m_pqueue.pop();
+			}
+		}
+		while ( (!m_edges[currentEdge.m_name].m_tag) || (m_edges[currentEdge.m_name].m_qem != currentEdge.m_qem));
+		
+		if (done) return false;
+		v1 = m_edges[currentEdge.m_name].m_v1;
+		v2 = m_edges[currentEdge.m_name].m_v2;
+
+		qem = currentEdge.m_qem;
+		EdgeCollapse(v1, v2);
+		m_points[v1] = m_edges[currentEdge.m_name].m_pos ;
+		for(int k = 0; k < 10; k++) m_vertices[v1].m_Q[k] += m_vertices[v2].m_Q[k];
+
+		// Update priority queue
+		long idEdge;
+        long a, b;
+        SArray<long, SARRAY_DEFAULT_MIN_SIZE> incidentVertices;
+		for(size_t itE = 0; itE < m_vertices[v1].m_edges.Size(); ++itE)
+		{
+            idEdge = m_vertices[v1].m_edges[itE];
+			a = m_edges[idEdge].m_v1;
+			b = m_edges[idEdge].m_v2;
+            incidentVertices.PushBack((a != v1)?a:b);
+			MDEdgePriorityQueue pqEdge;
+			pqEdge.m_qem = m_edges[idEdge].m_qem = ComputeEdgeCost(a, b, m_edges[idEdge].m_pos);
+			pqEdge.m_name = idEdge;
+			m_pqueue.push(pqEdge);
+		}
+        long idVertex;
+		for(size_t itV = 0; itV< incidentVertices.Size(); ++itV)
+		{
+            idVertex = incidentVertices[itV];
+		    for(size_t itE = 0; itE < m_vertices[idVertex].m_edges.Size(); ++itE)
+		    {
+                idEdge = m_vertices[idVertex].m_edges[itE];
+			    a = m_edges[idEdge].m_v1;
+			    b = m_edges[idEdge].m_v2;
+			    if ( a!=v1 && b!=v1)
+			    {
+				    MDEdgePriorityQueue pqEdge;
+				    pqEdge.m_qem = m_edges[idEdge].m_qem = ComputeEdgeCost(a, b, m_edges[idEdge].m_pos);
+				    pqEdge.m_name = idEdge;
+				    m_pqueue.push(pqEdge);
+			    }
+		    }
+        }
+		return true;	
+	}
+	bool MeshDecimator::Decimate(size_t targetNVertices, size_t targetNTriangles, double targetError)
+	{
+		double qem = 0.0;
+		double progressOld = -1.0;
+		double progress = 0.0;    
+		char msg[1024];
+		double ptgStep = 1.0;
+
+		if (m_callBack)
+		{
+			std::ostringstream msg;
+			msg << "+ Mesh" << std::endl;
+			msg << "\t # vertices                     \t" << m_nPoints << std::endl;
+			msg << "\t # triangles                    \t" << m_nTriangles << std::endl;
+			msg << "+ Parameters" << std::endl;
+			msg << "\t target # of vertices           \t" << targetNVertices << std::endl;
+			msg << "\t target # of triangles          \t" << targetNTriangles << std::endl;
+			msg << "\t QEM			                  \t" << targetError << std::endl;
+			(*m_callBack)(msg.str().c_str(), 0.0, 0.0, m_nPoints);
+		}
+		
+		if (m_callBack) (*m_callBack)("+ Initialize QEM \n", 0.0, 0.0, m_nPoints);
+		InitializeQEM();
+		if (m_callBack) (*m_callBack)("+ Initialize priority queue \n", 0.0, 0.0, m_nPoints);
+		InitializePriorityQueue();
+		if (m_callBack) (*m_callBack)("+ Simplification \n", 0.0, 0.0, m_nPoints);
+		double invDiag2 = 1.0 / (m_diagBB * m_diagBB);
+		while((m_pqueue.size() > 0) && 
+			  (m_nEdges > 0) && 
+			  (m_nVertices > targetNVertices) &&
+			  (m_nTriangles > targetNTriangles) &&
+			  (qem < targetError))
+		{
+			progress = 100.0 - m_nVertices * 100.0 / m_nPoints;
+			if (fabs(progress-progressOld) > ptgStep && m_callBack)
+			{
+				sprintf(msg, "%3.2f %% V = %lu \t QEM = %f \t \t \r", progress, static_cast<unsigned long>(m_nVertices), sqrt(qem));
+				(*m_callBack)(msg, progress, qem, m_nVertices);
+				progressOld = progress;
+			}
+			if (!EdgeCollapse(qem)) break;
+			qem *= invDiag2;
+		}
+		if (m_callBack)
+		{
+			std::ostringstream msg;
+			msg << "+ Simplification output" << std::endl;
+			msg << "\t # vertices                     \t" << m_nVertices << std::endl;
+			msg << "\t # triangles                    \t" << m_nTriangles << std::endl;
+			msg << "\t QEM					          \t" << qem << std::endl;
+			(*m_callBack)(msg.str().c_str(), 100.0, qem, m_nVertices);
+		}
+		return true;
+	}
+}

indra/libhacd/hacdMeshDecimator.h

@@ -0,0 +1,116 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+All rights reserved.
+
+
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#pragma once
+#ifndef HACD_MESH_DECEMATOR_H
+#define HACD_MESH_DECEMATOR_H
+#include <queue>
+#include <set>
+#include <vector>
+#include <limits>
+#include "hacdVersion.h"
+#include "hacdVector.h"
+#include "hacdSArray.h"
+#include "hacdHACD.h"
+
+namespace HACD
+{
+	typedef double Float;
+	struct MDVertex
+	{
+		SArray<long, SARRAY_DEFAULT_MIN_SIZE>   m_edges;	
+		SArray<long, SARRAY_DEFAULT_MIN_SIZE>	m_triangles;	
+		Float									m_Q[10];
+												// 0 1 2 3
+	  											//   4 5 6
+	   											//     7 8
+		  										//       9
+		bool									m_tag;
+		bool									m_onBoundary;
+	};
+	
+	struct MDEdge
+	{
+		long									m_v1;		
+		long									m_v2;		
+		double									m_qem;	
+		Vec3<Float>								m_pos;
+		bool									m_onBoundary;
+		bool									m_tag;
+	};
+	struct MDEdgePriorityQueue
+	{
+		long									m_name;		
+		double									m_qem;	
+		inline	friend bool						operator<(const MDEdgePriorityQueue & lhs, const MDEdgePriorityQueue & rhs) { return (lhs.m_qem > rhs.m_qem);}
+		inline	friend bool						operator>(const MDEdgePriorityQueue & lhs, const MDEdgePriorityQueue & rhs) { return (lhs.m_qem < rhs.m_qem);}
+	};
+
+	class MeshDecimator
+	{
+	public:
+		//! Sets the call-back function
+		//! @param callBack pointer to the call-back function
+		void									SetCallBack(CallBackFunction  callBack) { m_callBack = callBack;}
+		//! Gives the call-back function
+		//! @return pointer to the call-back function
+		const CallBackFunction                  GetCallBack() const { return m_callBack;}
+
+		inline void								SetEColManifoldConstraint(bool ecolManifoldConstraint) { m_ecolManifoldConstraint = ecolManifoldConstraint; }
+		inline size_t							GetNVertices()const {return m_nVertices;};
+		inline size_t							GetNTriangles() const {return m_nTriangles;};
+		inline size_t							GetNEdges() const {return m_nEdges;};
+		void									GetMeshData(Vec3<Float> * points, Vec3<long> * triangles) const;
+		void									ReleaseMemory();
+		void									Initialize(size_t nVertices, size_t nTriangles, 
+														   Vec3<Float> *  points, 
+														   Vec3<long> * triangles);		
+		bool 									Decimate(size_t targetNVertices = 100, 
+														 size_t targetNTriangles = 0, 
+														 double targetError = std::numeric_limits<double>::max());
+
+												MeshDecimator(void);
+												~MeshDecimator(void);
+	private : 
+		void									EdgeCollapse(long v1, long v2);
+		long									GetTriangle(long v1, long v2, long v3) const;
+		long									GetEdge(long v1, long v2) const;
+		long									IsBoundaryEdge(long v1, long v2) const;
+		bool									IsBoundaryVertex(long v) const;
+		void									InitializePriorityQueue();
+		void									InitializeQEM();
+		bool									ManifoldConstraint(long v1, long v2) const;
+		double									ComputeEdgeCost(long v1, long v2, Vec3<Float> & pos) const;
+		bool									EdgeCollapse(double & error);
+	private:
+		Vec3<long> *							m_triangles;			
+		Vec3<Float> *							m_points;		
+		size_t									m_nPoints;
+		size_t									m_nInitialTriangles;
+		size_t									m_nVertices;
+		size_t									m_nTriangles;
+		size_t									m_nEdges;
+		double									m_diagBB;
+		std::vector<MDVertex>					m_vertices;
+		std::vector<MDEdge>						m_edges;
+		std::priority_queue<
+			 MDEdgePriorityQueue, 
+			 std::vector<MDEdgePriorityQueue>, 
+			 std::less<MDEdgePriorityQueue> >	m_pqueue;
+		CallBackFunction						m_callBack;					//>! call-back function
+		bool *									m_trianglesTags;
+		bool									m_ecolManifoldConstraint;
+	};
+}
+#endif

indra/libhacd/hacdMicroAllocator.cpp

@@ -0,0 +1,993 @@
+#include "hacdMicroAllocator.h"
+
+/*!
+**
+** Copyright (c) 2009 by John W. Ratcliff mailto:jratcliffscarab@gmail.com
+**
+** If you find this code useful or you are feeling particularily generous I would
+** ask that you please go to http://www.amillionpixels.us and make a donation
+** to Troy DeMolay.
+**
+**
+** If you wish to contact me you can use the following methods:
+**
+** Skype ID: jratcliff63367
+** email: jratcliffscarab@gmail.com
+**
+**
+** The MIT license:
+**
+** Permission is hereby granted, free of charge, to any person obtaining a copy
+** of this software and associated documentation files (the "Software"), to deal
+** in the Software without restriction, including without limitation the rights
+** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+** copies of the Software, and to permit persons to whom the Software is furnished
+** to do so, subject to the following conditions:
+**
+** The above copyright notice and this permission notice shall be included in all
+** copies or substantial portions of the Software.
+
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+** WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+** CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+#include <new>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#if defined(__APPLE__) || defined(LINUX)
+#include <pthread.h>
+#endif
+
+
+#pragma warning(disable:4100)
+
+namespace HACD
+{
+
+//==================================================================================
+class MemMutex
+{
+	public:
+		MemMutex(void);
+		~MemMutex(void);
+
+	public:
+		// Blocking Lock.
+		void Lock(void);
+
+		// Unlock.
+		void Unlock(void);
+
+private:
+		#if defined(_WIN32) || defined(_XBOX)
+		CRITICAL_SECTION m_Mutex;
+		#elif defined(__APPLE__) || defined(LINUX)
+		pthread_mutex_t  m_Mutex;
+		#endif
+};
+
+//==================================================================================
+MemMutex::MemMutex(void)
+{
+#if defined(_WIN32) || defined(_XBOX)
+	InitializeCriticalSection(&m_Mutex);
+#elif defined(__APPLE__) || defined(LINUX)
+	pthread_mutexattr_t mta;
+	pthread_mutexattr_init(&mta);
+	pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_RECURSIVE);
+	pthread_mutex_init(&m_Mutex, &mta);
+	pthread_mutexattr_destroy(&mta);
+#endif
+}
+
+//==================================================================================
+MemMutex::~MemMutex(void)
+{
+#if defined(_WIN32) || defined(_XBOX)
+	DeleteCriticalSection(&m_Mutex);
+#elif defined(__APPLE__) || defined(LINUX)
+	pthread_mutex_destroy(&m_Mutex);
+#endif
+}
+
+//==================================================================================
+// Blocking Lock.
+//==================================================================================
+void MemMutex::Lock(void)
+{
+#if defined(_WIN32) || defined(_XBOX)
+	EnterCriticalSection(&m_Mutex);
+#elif defined(__APPLE__) || defined(LINUX)
+	pthread_mutex_lock(&m_Mutex);
+#endif
+}
+
+//==================================================================================
+// Unlock.
+//==================================================================================
+void MemMutex::Unlock(void)
+{
+#if defined(_WIN32) || defined(_XBOX)
+	LeaveCriticalSection(&m_Mutex);
+#elif defined(__APPLE__) || defined(LINUX)
+	pthread_mutex_unlock(&m_Mutex);
+#endif
+}
+
+
+
+struct ChunkHeader
+{
+  ChunkHeader   *mNextChunk;
+};
+
+// interface to add and remove new chunks to the master list.
+class MicroChunkUpdate
+{
+public:
+  virtual void addMicroChunk(NxU8 *memStart,NxU8 *memEnd,MemoryChunk *chunk) = 0;
+  virtual void removeMicroChunk(MemoryChunk *chunk) = 0;
+};
+
+class MemoryHeader
+{
+public:
+  MemoryHeader *mNext;
+};
+
+// a single fixed size chunk for micro-allocations.
+class MemoryChunk
+{
+public:
+  MemoryChunk(void)
+  {
+    mData       = 0;
+    mDataEnd    = 0;
+    mUsedCount  = 0;
+    mFreeList   = 0;
+    mMyHeap     = false;
+    mChunkSize  = 0;
+  }
+
+  NxU8 * init(NxU8 *chunkBase,NxU32 chunkSize,NxU32 maxChunks)
+  {
+    mChunkSize  = chunkSize;
+    mData     =  chunkBase;
+    mDataEnd  = mData+(chunkSize*maxChunks);
+    mFreeList = (MemoryHeader *) mData;
+    MemoryHeader *scan = mFreeList;
+    NxU8 *data = mData;
+    data+=chunkSize;
+    for (NxU32 i=0; i<(maxChunks-1); i++)
+    {
+        MemoryHeader *next = (MemoryHeader *)data;
+        scan->mNext = next;
+        data+=chunkSize;
+        scan = next;
+    }
+    scan->mNext = 0;
+    return mDataEnd;
+  }
+
+  inline void * allocate(MicroHeap *heap,NxU32 chunkSize,NxU32 maxChunks,MicroChunkUpdate *update)
+  {
+    void *ret = 0;
+
+    if ( mData == 0 )
+    {
+        mMyHeap = true;
+        mData = (NxU8 *)heap->micro_malloc( chunkSize * maxChunks );
+        init(mData,chunkSize,maxChunks);
+        update->addMicroChunk(mData,mDataEnd,this);
+    }
+    if ( mFreeList )
+    {
+        mUsedCount++;
+        ret = mFreeList;
+        mFreeList = mFreeList->mNext;
+    }
+    return ret;
+  }
+
+  inline void deallocate(void *p,MicroHeap *heap,MicroChunkUpdate *update)
+  {
+#ifdef _DEBUG
+    assert(mUsedCount);
+    NxU8 *s = (NxU8 *)p;
+    assert( s >= mData && s < mDataEnd );
+#endif
+    MemoryHeader *mh = mFreeList;
+    mFreeList = (MemoryHeader *)p;
+    mFreeList->mNext = mh;
+    mUsedCount--;
+    if ( mUsedCount == 0 && mMyHeap  ) // free the heap back to the application if we are done with this.
+    {
+        update->removeMicroChunk(this);
+        heap->micro_free(mData);
+        mMyHeap = false;
+        mData   = 0;
+        mDataEnd = 0;
+        mFreeList = 0;
+    }
+  }
+
+  NxU32 getChunkSize(void) const { return mChunkSize; };
+
+  bool isInside(const NxU8 *p) const
+  {
+	  return p>=mData && p < mDataEnd; 
+  }
+
+private:
+  bool          mMyHeap;
+  NxU8         *mData;
+  NxU8         *mDataEnd;
+  NxU32         mUsedCount;
+  MemoryHeader *mFreeList;
+  NxU32         mChunkSize;
+};
+
+#define DEFAULT_CHUNKS 32
+
+class MemoryChunkChunk
+{
+public:
+  MemoryChunkChunk(void)
+  {
+    mNext = 0;
+    mChunkSize = 0;
+	mMaxChunks = 0;
+  }
+
+  ~MemoryChunkChunk(void)
+  {
+  }
+
+  inline void * allocate(MemoryChunk *&current,MicroChunkUpdate *update)
+  {
+    void *ret = 0;
+
+    MemoryChunkChunk *scan = this;
+    while ( scan && ret == 0 )
+    {
+      for (NxU32 i=0; i<DEFAULT_CHUNKS; i++)
+      {
+          ret = scan->mChunks[i].allocate(mHeap,mChunkSize,mMaxChunks,update);
+          if ( ret )
+          {
+            current = &scan->mChunks[i];
+            scan = 0;
+            break;
+          }
+      }
+      if ( scan )
+        scan = scan->mNext;
+    }
+
+    if ( !ret )
+    {
+        MemoryChunkChunk *mcc = (MemoryChunkChunk *)mHeap->micro_malloc( sizeof(MemoryChunkChunk) );
+        new ( mcc ) MemoryChunkChunk;
+        MemoryChunkChunk *onext = mNext;
+        mNext = mcc;
+        mcc->mNext = onext;
+        ret = mcc->mChunks[0].allocate(mHeap,mChunkSize,mMaxChunks,update);
+        current = &mcc->mChunks[0];
+    }
+
+    return ret;
+  }
+
+  NxU8 * init(NxU8 *chunkBase,NxU32 fixedSize,NxU32 chunkSize,MemoryChunk *&current,MicroHeap *heap)
+  {
+    mHeap = heap;
+    mChunkSize = chunkSize;
+	mMaxChunks = fixedSize/chunkSize;
+    current = &mChunks[0];
+    chunkBase = mChunks[0].init(chunkBase,chunkSize,mMaxChunks);
+    return chunkBase;
+  }
+
+  MicroHeap        *mHeap;
+  NxU32             mChunkSize;
+  NxU32             mMaxChunks;
+  MemoryChunkChunk *mNext;
+  MemoryChunk       mChunks[DEFAULT_CHUNKS];
+};
+
+class FixedMemory
+{
+public:
+  FixedMemory(void)
+  {
+    mCurrent = 0;
+  }
+
+  void * allocate(MicroChunkUpdate *update)
+  {
+    void *ret = mCurrent->allocate(mChunks.mHeap,mChunks.mChunkSize,mChunks.mMaxChunks,update);
+    if ( ret == 0 )
+    {
+        ret = mChunks.allocate(mCurrent,update);
+    }
+	return ret;
+  }
+
+  NxU8 * init(NxU8 *chunkBase,NxU32 chunkSize,NxU32 fixedSize,MicroHeap *heap)
+  {
+	mMemBegin = chunkBase;
+	mMemEnd   = chunkBase+fixedSize;
+    mChunks.init(chunkBase,fixedSize,chunkSize,mCurrent,heap);
+	return mMemEnd;
+  }
+
+  NxU8            *mMemBegin;
+  NxU8            *mMemEnd;
+  MemoryChunk     *mCurrent; // the current memory chunk we are operating in.
+  MemoryChunkChunk mChunks;  // the collection of all memory chunks used.
+};
+
+class MicroChunk
+{
+public:
+
+  void set(NxU8 *memStart,NxU8 *memEnd,MemoryChunk *mc)
+  {
+    mMemStart = memStart;
+    mMemEnd   = memEnd;
+    mChunk    = mc;
+    mPad      = 0;
+  }
+
+  inline bool inside(const NxU8 *p) const
+  {
+    return p >= mMemStart && p < mMemEnd;
+  }
+
+  NxU8        *mMemStart;
+  NxU8        *mMemEnd;
+  MemoryChunk *mChunk;
+  NxU8        *mPad; // padding to make it 16 byte aligned.
+};
+
+class MyMicroAllocator : public MicroAllocator, public MicroChunkUpdate, public MemMutex
+{
+public:
+  MyMicroAllocator(MicroHeap *heap,void *baseMem,NxU32 initialSize,NxU32 chunkSize)
+  {
+    mLastMicroChunk     = 0;
+    mMicroChunks        = 0;
+    mMicroChunkCount    = 0;
+    mMaxMicroChunks		= 0;
+	mHeap               = heap;
+	mChunkSize          = chunkSize;
+
+    // 0 through 8 bytes
+    for (NxU32 i=0; i<=8; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[0];
+    }
+
+    // 9 through 16 bytes
+    for (NxU32 i=9; i<=16; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[1];
+    }
+
+    // 17 through 32 bytes
+    for (NxU32 i=17; i<=32; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[2];
+    }
+
+    // 33 through 64
+    for (NxU32 i=33; i<=64; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[3];
+    }
+
+    // 65 through 128
+    for (NxU32 i=65; i<=128; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[4];
+    }
+
+    // 129 through 255
+    for (NxU32 i=129; i<257; i++)
+    {
+        mFixedAllocators[i] = &mAlloc[5];
+    }
+
+    mBaseMem = (NxU8 *)baseMem;
+    mBaseMemEnd = mBaseMem+initialSize;
+
+    NxU8 *chunkBase = (NxU8 *)baseMem+sizeof(MyMicroAllocator);
+
+
+    chunkBase+=32;
+	NxU64 ptr = (NxU64)chunkBase;
+	ptr = ptr>>4;
+	ptr = ptr<<4; // make sure it is 16 byte aligned.
+	chunkBase = (NxU8 *)ptr;
+
+    mChunkStart = chunkBase;
+    chunkBase = mAlloc[0].init(chunkBase,8,chunkSize,heap);
+    chunkBase = mAlloc[1].init(chunkBase,16,chunkSize,heap);
+    chunkBase = mAlloc[2].init(chunkBase,32,chunkSize,heap);
+    chunkBase = mAlloc[3].init(chunkBase,64,chunkSize,heap);
+    chunkBase = mAlloc[4].init(chunkBase,128,chunkSize,heap);
+    chunkBase = mAlloc[5].init(chunkBase,256,chunkSize,heap);
+	mChunkEnd = chunkBase;
+
+    assert(chunkBase <= mBaseMemEnd );
+
+  }
+
+  ~MyMicroAllocator(void)
+  {
+    if ( mMicroChunks )
+    {
+        mHeap->micro_free(mMicroChunks);
+    }
+  }
+
+  virtual NxU32           getChunkSize(MemoryChunk *chunk) 
+  {
+	  return chunk ? chunk->getChunkSize() : 0;
+  }
+
+  // we have to steal one byte out of every allocation to record the size, so we can efficiently de-allocate it later.
+  virtual void * malloc(size_t size)
+  {
+    void *ret = 0;
+	Lock();
+   assert( size <= 256 );
+   if ( size <= 256 )
+   {
+     ret = mFixedAllocators[size]->allocate(this);
+   }
+   Unlock();
+    return ret;
+  }
+
+  virtual void   free(void *p,MemoryChunk *chunk)
+  {
+    Lock();
+    chunk->deallocate(p,mHeap,this);
+	Unlock();
+  }
+
+  // perform a binary search on the sorted list of chunks.
+  MemoryChunk * binarySearchMicroChunks(const NxU8 *p)
+  {
+	  MemoryChunk *ret = 0;
+
+	  NxU32 low = 0;
+	  NxU32 high = mMicroChunkCount;
+
+	  while ( low != high )
+	  {
+		  NxU32 mid = (high-low)/2+low;
+		  MicroChunk &chunk = mMicroChunks[mid];
+		  if ( chunk.inside(p))
+		  {
+			  mLastMicroChunk = &chunk;
+			  ret = chunk.mChunk;
+			  break;
+		  }
+		  else
+		  {
+			  if ( p > chunk.mMemEnd )
+			  {
+				  low = mid+1;
+			  }
+			  else
+			  {
+				  high = mid;
+			  }
+		  }
+	  }
+
+	  return ret;
+  }
+
+  virtual MemoryChunk *   isMicroAlloc(const void *p)  // returns true if this pointer is handled by the micro-allocator.
+  {
+    MemoryChunk *ret = 0;
+
+	Lock();
+
+    const NxU8 *s = (const NxU8 *)p;
+
+    if ( s >= mChunkStart && s < mChunkEnd )
+    {
+        NxU32 index = (NxU32)(s-mChunkStart)/mChunkSize;
+        assert(index>=0 && index < 6 );
+        ret = &mAlloc[index].mChunks.mChunks[0];
+		assert( ret->isInside(s) );
+    }
+	else if ( mMicroChunkCount )
+	{
+        if ( mLastMicroChunk && mLastMicroChunk->inside(s) )
+        {
+            ret = mLastMicroChunk->mChunk;
+        }
+        else
+        {
+			if ( mMicroChunkCount >= 4 )
+			{
+				ret = binarySearchMicroChunks(s);
+#ifdef _DEBUG
+				if (ret )
+				{
+					assert( ret->isInside(s) );
+				}
+				else 
+				{
+					for (NxU32 i=0; i<mMicroChunkCount; i++)
+					{
+						assert( !mMicroChunks[i].inside(s) );
+					}
+				}
+#endif
+			}
+			else
+			{
+				for (NxU32 i=0; i<mMicroChunkCount; i++)
+				{
+					if ( mMicroChunks[i].inside(s) )
+					{
+						ret = mMicroChunks[i].mChunk;
+						assert( ret->isInside(s) );
+						mLastMicroChunk = &mMicroChunks[i];
+						break;
+					}
+				}
+			}
+        }
+	}
+#ifdef _DEBUG
+	if ( ret )
+		assert( ret->isInside(s) );
+#endif
+	Unlock();
+    return ret;
+  }
+
+  MicroHeap * getMicroHeap(void) const { return mHeap; };
+
+  void allocateMicroChunks(void)
+  {
+    if ( mMaxMicroChunks == 0 )
+    {
+        mMaxMicroChunks = 64; // initial reserve.
+        mMicroChunks = (MicroChunk *)mHeap->micro_malloc( sizeof(MicroChunk)*mMaxMicroChunks );
+    }
+    else
+    {
+        mMaxMicroChunks*=2;
+        mMicroChunks = (MicroChunk *)mHeap->micro_realloc( mMicroChunks, sizeof(MicroChunk)*mMaxMicroChunks);
+    }
+  }
+
+  // perform an insertion sort of the new chunk.
+  virtual void addMicroChunk(NxU8 *memStart,NxU8 *memEnd,MemoryChunk *chunk)
+  {
+    if ( mMicroChunkCount >= mMaxMicroChunks )
+    {
+        allocateMicroChunks();
+    }
+
+    bool inserted = false;
+    for (NxU32 i=0; i<mMicroChunkCount; i++)
+    {
+        if ( memEnd < mMicroChunks[i].mMemStart )
+        {
+            for (NxU32 j=mMicroChunkCount; j>i; j--)
+            {
+                mMicroChunks[j] = mMicroChunks[j-1];
+            }
+            mMicroChunks[i].set( memStart, memEnd, chunk );
+			mLastMicroChunk = &mMicroChunks[i];
+            mMicroChunkCount++;
+            inserted = true;
+            break;
+        }
+    }
+    if ( !inserted )
+    {
+        mMicroChunks[mMicroChunkCount].set(memStart,memEnd,chunk);
+		mLastMicroChunk = &mMicroChunks[mMicroChunkCount];
+        mMicroChunkCount++;
+    }
+  }
+
+  virtual void removeMicroChunk(MemoryChunk *chunk)
+  {
+    mLastMicroChunk = 0;
+    #ifdef _DEBUG
+    bool removed = false;
+    #endif
+    for (NxU32 i=0; i<mMicroChunkCount; i++)
+    {
+        if ( mMicroChunks[i].mChunk == chunk )
+        {
+            mMicroChunkCount--;
+            for (NxU32 j=i; j<mMicroChunkCount; j++)
+            {
+                mMicroChunks[j] = mMicroChunks[j+1];
+            }
+            #ifdef _DEBUG
+            removed = true;
+            #endif
+            break;
+        }
+    }
+#ifdef _DEBUG
+    assert(removed);
+#endif
+  }
+
+  inline void * inline_malloc(size_t size)
+  {
+     Lock();
+     void *ret = mFixedAllocators[size]->allocate(this);
+	 Unlock();
+	 return ret;
+  }
+
+  inline void            inline_free(void *p,MemoryChunk *chunk) // free relative to previously located MemoryChunk
+  {
+	Lock();
+    chunk->deallocate(p,mHeap,this);
+	Unlock();
+  }
+
+  inline MemoryChunk *   inline_isMicroAlloc(const void *p) // returns pointer to the chunk this memory belongs to, or null if not a micro-allocated block.
+  {
+    MemoryChunk *ret = 0;
+
+	Lock();
+
+    const NxU8 *s = (const NxU8 *)p;
+
+    if ( s >= mChunkStart && s < mChunkEnd )
+    {
+        NxU32 index = (NxU32)(s-mChunkStart)/mChunkSize;
+        assert(index>=0 && index < 6 );
+        ret = &mAlloc[index].mChunks.mChunks[0];
+    }
+	else if ( mMicroChunkCount )
+	{
+        if ( mLastMicroChunk && mLastMicroChunk->inside(s) )
+        {
+            ret = mLastMicroChunk->mChunk;
+        }
+        else
+        {
+			if ( mMicroChunkCount >= 4 )
+			{
+				ret = binarySearchMicroChunks(s);
+			}
+			else
+			{
+				for (NxU32 i=0; i<mMicroChunkCount; i++)
+				{
+					if ( mMicroChunks[i].inside(s) )
+					{
+						ret = mMicroChunks[i].mChunk;
+						mLastMicroChunk = &mMicroChunks[i];
+						break;
+					}
+				}
+			}
+        }
+	}
+
+	Unlock();
+
+    return ret;
+  }
+
+
+private:
+  MicroHeap   *mHeap;
+  NxU8        *mBaseMem;
+  NxU8        *mBaseMemEnd;
+  FixedMemory *mFixedAllocators[257];
+  NxU32        mChunkSize;
+  NxU8        *mChunkStart;
+  NxU8        *mChunkEnd;
+
+  NxU32        mMaxMicroChunks;
+  NxU32        mMicroChunkCount;
+  MicroChunk  *mLastMicroChunk;
+  MicroChunk  *mMicroChunks;
+
+  FixedMemory  mAlloc[6];
+};
+
+
+MicroAllocator *createMicroAllocator(MicroHeap *heap,NxU32 chunkSize)
+{
+    NxU32 initialSize = chunkSize*6+sizeof(MyMicroAllocator)+32;
+    void *baseMem = heap->micro_malloc(initialSize);
+    MyMicroAllocator *mc = (MyMicroAllocator *)baseMem;
+    new ( mc ) MyMicroAllocator(heap,baseMem,initialSize,chunkSize);
+    return static_cast< MicroAllocator *>(mc);
+}
+
+void releaseMicroAllocator(MicroAllocator *m)
+{
+    MyMicroAllocator *mc = static_cast< MyMicroAllocator *>(m);
+	MicroHeap *mh = mc->getMicroHeap();
+    mc->~MyMicroAllocator();
+	mh->micro_free(mc);
+}
+
+class MyHeapManager : public MicroHeap, public HeapManager
+{
+public:
+  MyHeapManager(NxU32 defaultChunkSize)
+  {
+    mMicro = createMicroAllocator(this,defaultChunkSize);
+  }
+
+  ~MyHeapManager(void)
+  {
+    releaseMicroAllocator(mMicro);
+  }
+
+  // heap allocations used by the micro allocator.
+  virtual void * micro_malloc(size_t size)
+  {
+    return ::malloc(size);
+  }
+
+  virtual void   micro_free(void *p)
+  {
+    return ::free(p);
+  }
+
+  virtual void * micro_realloc(void *oldMem,size_t newSize)
+  {
+    return ::realloc(oldMem,newSize);
+  }
+
+  virtual void * heap_malloc(size_t size)
+  {
+    void *ret;
+
+    if ( size <= 256 ) // micro allocator only handles allocations between 0 and 256 bytes in length.
+    {
+        ret = mMicro->malloc(size);
+    }
+    else
+    {
+        ret = ::malloc(size);
+    }
+    return ret;
+  }
+
+  virtual void   heap_free(void *p)
+  {
+    MemoryChunk *chunk = mMicro->isMicroAlloc(p);
+    if ( chunk )
+    {
+        mMicro->free(p,chunk);
+    }
+    else
+    {
+        ::free(p);
+    }
+  }
+
+  virtual void * heap_realloc(void *oldMem,size_t newSize)
+  {
+    void *ret = 0;
+
+    MemoryChunk *chunk = mMicro->isMicroAlloc(oldMem);
+    if ( chunk )
+    {
+        ret = heap_malloc(newSize);
+        NxU32 oldSize = chunk->getChunkSize();
+        if ( oldSize < newSize )
+        {
+            memcpy(ret,oldMem,oldSize);
+        }
+        else
+        {
+            memcpy(ret,oldMem,newSize);
+        }
+        mMicro->free(oldMem,chunk);
+    }
+    else
+    {
+        ret = ::realloc(oldMem,newSize);
+    }
+
+    return ret;
+  }
+
+  inline void * inline_heap_malloc(size_t size)
+  {
+    return size<=256 ? ((MyMicroAllocator *)mMicro)->inline_malloc(size) : ::malloc(size);
+  }
+
+  inline void   inline_heap_free(void *p)
+  {
+	  MemoryChunk *chunk = ((MyMicroAllocator *)mMicro)->inline_isMicroAlloc(p);
+	  if ( chunk )
+	  {
+		  ((MyMicroAllocator *)mMicro)->inline_free(p,chunk);
+	  }
+	  else
+	  {
+		  ::free(p);
+	  }
+
+  }
+
+private:
+  MicroAllocator *mMicro;
+};
+
+
+HeapManager * createHeapManager(NxU32 defaultChunkSize)
+{
+    MyHeapManager *m = (MyHeapManager *)::malloc(sizeof(MyHeapManager));
+    new ( m ) MyHeapManager(defaultChunkSize);
+    return static_cast< HeapManager *>(m);
+}
+
+void          releaseHeapManager(HeapManager *heap)
+{
+    MyHeapManager *m = static_cast< MyHeapManager *>(heap);
+    m->~MyHeapManager();
+	free(m);
+}
+
+
+#define TEST_SIZE 63
+#define TEST_ALLOC_COUNT 8192
+#define TEST_RUN 40000000
+#define TEST_INLINE 1
+
+#ifdef WIN32
+#include <windows.h>
+#pragma comment(lib,"winmm.lib")
+#else
+static NxU32 timeGetTime(void)
+{
+	return 0;
+}
+#endif
+#include <stdio.h>
+
+void performUnitTests(void)
+{
+    void *allocs[TEST_ALLOC_COUNT];
+    for (NxU32 i=0; i<TEST_ALLOC_COUNT; i++)
+    {
+        allocs[i] = 0;
+    }
+
+
+    HeapManager *hm = createHeapManager(65536*32);
+
+
+    {
+
+      NxU32 stime = timeGetTime();
+      srand(0);
+
+
+      for (NxU32 i=0; i<TEST_RUN; i++)
+      {
+          NxU32 index = rand()&(TEST_ALLOC_COUNT-1);
+          if ( allocs[index] )
+          {
+#if TEST_INLINE
+              heap_free(hm, allocs[index] );
+#else
+              hm->heap_free( allocs[index] );
+#endif
+              allocs[index] = 0;
+          }
+          else
+          {
+              NxU32 asize = (rand()&TEST_SIZE);
+			  if ( (rand()&127)==0) asize+=256; // one out of every 15 allocs is larger than 256 bytes.
+#if TEST_INLINE
+              allocs[index] = heap_malloc(hm,asize);
+#else
+              allocs[index] = hm->heap_malloc(asize);
+#endif
+          }
+      }
+
+      for (NxU32 i=0; i<TEST_ALLOC_COUNT; i++)
+      {
+          if ( allocs[i] )
+          {
+#if TEST_INLINE
+              heap_free(hm,allocs[i] );
+#else
+              hm->heap_free(allocs[i] );
+#endif
+			  allocs[i] = 0;
+          }
+      }
+
+      NxU32 etime = timeGetTime();
+      printf("Micro allocation test took %d milliseconds.\r\n", etime - stime );
+
+    }
+
+    {
+
+      NxU32 stime = timeGetTime();
+      srand(0);
+
+
+      for (NxU32 i=0; i<TEST_RUN; i++)
+      {
+          NxU32 index = rand()&(TEST_ALLOC_COUNT-1);
+          if ( allocs[index] )
+          {
+              ::free( allocs[index] );
+              allocs[index] = 0;
+          }
+          else
+          {
+              NxU32 asize = (rand()&TEST_SIZE);
+			  if ( (rand()&127)==0) asize+=256; // one out of every 15 allocs is larger than 256 bytes.
+              allocs[index] = ::malloc(asize);
+          }
+      }
+
+      for (NxU32 i=0; i<TEST_ALLOC_COUNT; i++)
+      {
+          if ( allocs[i] )
+          {
+              ::free(allocs[i] );
+			  allocs[i] = 0;
+          }
+      }
+
+      NxU32 etime = timeGetTime();
+      printf("Standard malloc/free test took %d milliseconds.\r\n", etime - stime );
+
+    }
+
+    releaseHeapManager(hm);
+}
+
+void * heap_malloc(HeapManager *hm,size_t size)
+{
+    return ((MyHeapManager *)hm)->inline_heap_malloc(size);
+}
+
+void   heap_free(HeapManager *hm,void *p)
+{
+    ((MyHeapManager *)hm)->inline_heap_free(p);
+}
+
+void * heap_realloc(HeapManager *hm,void *oldMem,size_t newSize)
+{
+    return hm->heap_realloc(oldMem,newSize);
+}
+
+}; // end of namespace

indra/libhacd/hacdMicroAllocator.h

@@ -0,0 +1,204 @@
+#ifndef MICRO_ALLOCATOR_H
+
+#define MICRO_ALLOCATOR_H
+
+/*!
+**
+** Copyright (c) 2009 by John W. Ratcliff mailto:jratcliffscarab@gmail.com
+**
+** If you find this code useful or you are feeling particularily generous I would
+** ask that you please go to http://www.amillionpixels.us and make a donation
+** to Troy DeMolay.
+**
+** If you wish to contact me you can use the following methods:
+**
+** Skype ID: jratcliff63367
+** email: jratcliffscarab@gmail.com
+**
+**
+** The MIT license:
+**
+** Permission is hereby granted, free of charge, to any person obtaining a copy
+** of this software and associated documentation files (the "Software"), to deal
+** in the Software without restriction, including without limitation the rights
+** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+** copies of the Software, and to permit persons to whom the Software is furnished
+** to do so, subject to the following conditions:
+**
+** The above copyright notice and this permission notice shall be included in all
+** copies or substantial portions of the Software.
+
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+** WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+** CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// This code snippet provides a high speed micro-allocator.
+//
+// The concept is that you reserve an initial bank of memory for small allocations.  Ideally a megabyte or two.
+// The amount of memory reserved is equal to chunkSize*6
+//
+// All micro-allocations are split into 6 seperate pools.
+//    They are: 0-8 bytes
+//              9-32 bytes
+//              33-64 bytes
+//              65-128 bytes
+//              129-256 bytes
+//
+// On creation of the micro-allocation system you preserve a certiain amount of memory for each of these banks.
+//
+// The user provides a heap interface to callback for additional memory as needed.
+//
+// In most cases allocations are order-N and frees are order-N as well.
+//
+// The larger a buffer you provide, the closer to 'order-N' the allocator behaves.
+//
+// This kind of a micro-allocator is ideal for use with STL as it does many tiny allocations.
+// All allocations are 16 byte aligned (with the exception of the 8 byte allocations, which are 8 byte aligned every other one).
+//
+#include <stdio.h>
+
+#ifdef WIN32
+	typedef __int64				NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned __int64	NxU64;
+	typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+	typedef unsigned char		NxU8;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#elif __gnu_linux__
+	typedef long long			NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned long long	NxU64;
+    typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+	typedef unsigned char		NxU8;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#elif __APPLE__
+	typedef long long			NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned long long	NxU64;
+	typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+	typedef unsigned char		NxU8;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#elif __CELLOS_LV2__
+	typedef long long			NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned long long	NxU64;
+	typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+	typedef unsigned char		NxU8;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#elif _XBOX
+	typedef __int64				NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned __int64	NxU64;
+	typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+	typedef unsigned char		NxU8;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#elif defined(__PPCGEKKO__)
+	typedef long long			NxI64;
+	typedef signed int			NxI32;
+	typedef signed short		NxI16;
+	typedef signed char			NxI8;
+
+	typedef unsigned long long	NxU64;
+	typedef unsigned int		NxU32;
+	typedef unsigned short		NxU16;
+
+	typedef float				NxF32;
+	typedef double				NxF64;
+
+#else
+	#error Unknown platform!
+#endif
+
+
+namespace HACD
+{
+
+// user provided heap allocator
+class MicroHeap
+{
+public:
+  virtual void * micro_malloc(size_t size) = 0;
+  virtual void   micro_free(void *p) = 0;
+  virtual void * micro_realloc(void *oldMen,size_t newSize) = 0;
+};
+
+class MemoryChunk;
+
+class MicroAllocator
+{
+public:
+  virtual void *          malloc(size_t size) = 0;
+  virtual void            free(void *p,MemoryChunk *chunk) = 0; // free relative to previously located MemoryChunk
+  virtual MemoryChunk *   isMicroAlloc(const void *p) = 0; // returns pointer to the chunk this memory belongs to, or null if not a micro-allocated block.
+  virtual NxU32           getChunkSize(MemoryChunk *chunk) = 0;
+};
+
+MicroAllocator *createMicroAllocator(MicroHeap *heap,NxU32 chunkSize=32768); // initial chunk size 32k per block.
+void            releaseMicroAllocator(MicroAllocator *m);
+
+class HeapManager
+{
+public:
+  virtual void * heap_malloc(size_t size) = 0;
+  virtual void   heap_free(void *p) = 0;
+  virtual void * heap_realloc(void *oldMem,size_t newSize) = 0;
+};
+
+
+// creates a heap manager that uses micro-allocations for all allocations < 256 bytes and standard malloc/free for anything larger.
+HeapManager * createHeapManager(NxU32 defaultChunkSize=32768);
+void          releaseHeapManager(HeapManager *heap);
+
+// about 10% faster than using the virtual interface, inlines the functions as much as possible.
+void * heap_malloc(HeapManager *hm,size_t size);
+void   heap_free(HeapManager *hm,void *p);
+void * heap_realloc(HeapManager *hm,void *oldMem,size_t newSize);
+
+void performUnitTests(void);
+
+//
+
+}; // end of namespace
+
+#endif

indra/libhacd/hacdRaycastMesh.cpp

@@ -0,0 +1,280 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "hacdRaycastMesh.h"
+#include <math.h>
+#include <assert.h>
+#include <limits>
+#include "hacdManifoldMesh.h"
+namespace HACD
+{
+	bool BBox::Raycast(const Vec3<Float> & origin, const Vec3<Float> & dir, Float & distMin) const
+	{
+		Vec3<Float> d = m_max - m_min;
+		Float r2 = 0.25 * (d.X()*d.X()+d.Y()*d.Y()+d.Z()*d.Z());
+		Vec3<Float> c = 0.5 * m_max + 0.5 * m_min;
+		Vec3<Float> u = (c-origin);
+		Vec3<Float> a = u - (u * dir) * dir;
+		Float dist2 = (a.X()*a.X()+a.Y()*a.Y()+a.Z()*a.Z());
+		distMin = (u.X()*u.X()+u.Y()*u.Y()+u.Z()*u.Z());
+		if ( distMin > r2 ) // origin outside the sphere of center c and radius r 
+		{
+			distMin = sqrt(distMin) - sqrt(r2); // the distance to any point inside the sphere is higher than |origin - c| - r
+		}
+		else
+		{
+			distMin = 0.0;
+		}
+		if (dist2 > r2) return false;
+		return true;
+	}	
+	void RMNode::ComputeBB()
+	{
+		if (m_triIDs.Size() == 0)
+		{
+			return;
+		}
+		Vec3<long> * const triangles = m_rm->m_triangles;			
+		Vec3<Float> * const vertices = m_rm->m_vertices;
+		const Float minFloat = std::numeric_limits<Float>::min();
+		const Float maxFloat = std::numeric_limits<Float>::max();
+		m_bBox.m_max = Vec3<Float>(minFloat, minFloat, minFloat);
+		m_bBox.m_min = Vec3<Float>(maxFloat, maxFloat, maxFloat);
+		Float x, y, z;
+		long v, f;
+		for(size_t id = 0; id < m_triIDs.Size(); ++id)
+		{
+			f = m_triIDs[id];
+			for(size_t k = 0; k < 3; ++k)
+			{
+				v = triangles[f][k];
+				x = vertices[v].X();
+				y = vertices[v].Y();
+				z = vertices[v].Z();
+				if ( x < m_bBox.m_min.X()) m_bBox.m_min.X() = x;
+				if ( x > m_bBox.m_max.X()) m_bBox.m_max.X() = x;
+				if ( y < m_bBox.m_min.Y()) m_bBox.m_min.Y() = y;
+				if ( y > m_bBox.m_max.Y()) m_bBox.m_max.Y() = y;
+				if ( z < m_bBox.m_min.Z()) m_bBox.m_min.Z() = z;
+				if ( z > m_bBox.m_max.Z()) m_bBox.m_max.Z() = z;
+			}
+        }
+	}
+	void RaycastMesh::ComputeBB()
+	{
+		if (m_nVertices == 0)
+		{
+			return;
+		}
+		m_bBox.m_min = m_vertices[0];
+		m_bBox.m_max = m_vertices[0];
+		Float x, y, z;
+        for (size_t v = 1; v < m_nVertices ; v++) 
+        {
+            x = m_vertices[v].X();
+            y = m_vertices[v].Y();
+            z = m_vertices[v].Z();
+            if ( x < m_bBox.m_min.X()) m_bBox.m_min.X() = x;
+			else if ( x > m_bBox.m_max.X()) m_bBox.m_max.X() = x;
+            if ( y < m_bBox.m_min.Y()) m_bBox.m_min.Y() = y;
+			else if ( y > m_bBox.m_max.Y()) m_bBox.m_max.Y() = y;
+            if ( z < m_bBox.m_min.Z()) m_bBox.m_min.Z() = z;
+			else if ( z > m_bBox.m_max.Z()) m_bBox.m_max.Z() = z;
+        }
+	}
+	void RaycastMesh::Initialize(size_t nVertices, size_t nTriangles, 
+								Vec3<Float> *  vertices,  Vec3<long> * triangles, 
+								size_t maxDepth, size_t minLeafSize, Float minAxisSize)
+	{
+		m_triangles  = triangles;			
+		m_vertices   = vertices;		
+		m_nVertices  = nVertices;
+		m_nTriangles = nTriangles;
+		delete [] m_nodes;
+		m_nNodes = 0;
+		m_nMaxNodes = 0;
+		for(size_t k = 0; k < maxDepth; k++)
+		{
+			m_nMaxNodes += (1 << maxDepth);
+		}
+		m_nodes = new RMNode[m_nMaxNodes];
+		RMNode & root = m_nodes[AddNode()];
+		root.m_triIDs.Resize(nTriangles);
+		for(size_t t = 0; t < m_nTriangles; ++t) root.m_triIDs.PushBack(t);
+		root.m_rm = this;
+		root.m_id = 0;
+		root.Create(0, maxDepth, minLeafSize, minAxisSize);
+	}
+	RaycastMesh::RaycastMesh(void)
+	{
+		m_triangles  = 0;			
+		m_vertices   = 0;		
+		m_nVertices  = 0;
+		m_nTriangles = 0;
+		m_nodes		 = 0;
+		m_nNodes	 = 0;
+		m_nMaxNodes  = 0;
+	}
+	RaycastMesh::~RaycastMesh(void)
+	{
+		delete [] m_nodes;
+	}
+	void RMNode::Create(size_t depth, size_t maxDepth, size_t minLeafSize, Float minAxisSize)
+	{
+		ComputeBB();
+		Vec3<Float> d = m_bBox.m_max - m_bBox.m_min;
+		Float maxDiff = std::max<Float>(d.X(), std::max<Float>(d.Y(), d.Z()));
+		RMSplitAxis split;
+		if		(d.X() == maxDiff) split = RMSplitAxis_X;
+		else if (d.Y() == maxDiff) split = RMSplitAxis_Y;
+		else					   split = RMSplitAxis_Z;
+	
+		if (depth == maxDepth || minLeafSize >= m_triIDs.Size() || maxDiff < minAxisSize)
+		{
+			m_leaf = true;
+			return;
+		}
+		m_idLeft  = m_rm->AddNode();
+		m_idRight = m_rm->AddNode();
+		RMNode & leftNode  = m_rm->m_nodes[m_idLeft];	
+		RMNode & rightNode = m_rm->m_nodes[m_idRight];
+		leftNode.m_id      = m_idLeft;
+		rightNode.m_id     = m_idRight;
+		leftNode.m_bBox    = m_bBox;
+		rightNode.m_bBox   = m_bBox;
+		leftNode.m_rm	   = m_rm;
+		rightNode.m_rm	   = m_rm;
+
+		if ( split == RMSplitAxis_X)
+		{
+			leftNode.m_bBox.m_max.X() = leftNode.m_bBox.m_max.X() - d.X() * 0.5;
+			rightNode.m_bBox.m_min.X() = leftNode.m_bBox.m_max.X();
+		}
+		else if ( split == RMSplitAxis_Y)
+		{
+			leftNode.m_bBox.m_max.Y() = leftNode.m_bBox.m_max.Y() - d.Y() * 0.5;
+			rightNode.m_bBox.m_min.Y() = leftNode.m_bBox.m_max.Y();
+		}
+		else
+		{
+			leftNode.m_bBox.m_max.Z() = leftNode.m_bBox.m_max.Z() - d.Z() * 0.5;
+			rightNode.m_bBox.m_min.Z() = leftNode.m_bBox.m_max.Z();
+		}
+		long f;
+		long pts[3];
+		long v;
+		Vec3<long> * const triangles = m_rm->m_triangles;			
+		Vec3<Float> * const vertices = m_rm->m_vertices;
+		leftNode.m_triIDs.Resize(m_triIDs.Size());
+		rightNode.m_triIDs.Resize(m_triIDs.Size());
+		bool found;
+		for(size_t id = 0; id < m_triIDs.Size(); ++id)
+		{
+			f = m_triIDs[id];
+			pts[0] = triangles[f].X();
+            pts[1] = triangles[f].Y();
+            pts[2] = triangles[f].Z();
+
+			found = false;
+			for (int k = 0; k < 3; ++k)
+			{
+				v = pts[k];
+				if ( vertices[v].X() <= leftNode.m_bBox.m_max.X() && 
+					 vertices[v].X() >= leftNode.m_bBox.m_min.X() &&
+					 vertices[v].Y() <= leftNode.m_bBox.m_max.Y() && 
+					 vertices[v].Y() >= leftNode.m_bBox.m_min.Y() &&
+					 vertices[v].Z() <= leftNode.m_bBox.m_max.Z() && 
+					 vertices[v].Z() >= leftNode.m_bBox.m_min.Z() )
+				{
+					leftNode.m_triIDs.PushBack(f);
+					found = true;
+					break;
+				}
+			}
+			if (!found)
+			{
+				for (int k = 0; k < 3; ++k)
+				{
+					v = pts[k];
+					if ( vertices[v].X() <= rightNode.m_bBox.m_max.X() && 
+						 vertices[v].X() >= rightNode.m_bBox.m_min.X() &&
+						 vertices[v].Y() <= rightNode.m_bBox.m_max.Y() && 
+						 vertices[v].Y() >= rightNode.m_bBox.m_min.Y() &&
+						 vertices[v].Z() <= rightNode.m_bBox.m_max.Z() && 
+						 vertices[v].Z() >= rightNode.m_bBox.m_min.Z() )
+					{
+						rightNode.m_triIDs.PushBack(f);
+						break;
+					}
+				}		
+			}
+		}
+		rightNode.Create(depth+1, maxDepth, minLeafSize, minAxisSize);
+		leftNode.Create(depth+1, maxDepth, minLeafSize, minAxisSize);
+		m_triIDs.Clear();
+	}
+	bool RaycastMesh::Raycast(const Vec3<Float> & from, const Vec3<Float> & dir, long & triID, Float & distance, Vec3<Real> & hitPoint, Vec3<Real> & hitNormal) const
+	{
+		distance = std::numeric_limits<Float>::max();
+		if (m_nNodes == 0) return false;
+		return m_nodes[0].Raycast(from, dir, triID, distance, hitPoint, hitNormal);
+	}
+	bool RMNode::Raycast(const Vec3<Float> & from, const Vec3<Float> & dir, long & triID, Float & distance, Vec3<Real> & hitPoint, Vec3<Real> & hitNormal) const 
+	{
+		Float distToSphere;
+		if (m_bBox.Raycast(from, dir, distToSphere) && (distToSphere < distance))
+		{
+			if (m_leaf)
+			{
+				long f, i1, j1, k1;
+				Vec3<long> * const triangles = m_rm->m_triangles;			
+				Vec3<Float> * const vertices = m_rm->m_vertices;
+				Vec3<Real> u1, v1, normal1;
+				double dist = 0.0;
+				long nhit = 0;
+				bool ret = false;
+				for(size_t id = 0; id < m_triIDs.Size(); ++id)
+				{
+					f = m_triIDs[id];
+					i1 = triangles[f].X();
+					j1 = triangles[f].Y();
+					k1 = triangles[f].Z();
+					u1 = vertices[j1] - vertices[i1];
+					v1 = vertices[k1] - vertices[i1];
+					normal1 = (u1 ^ v1);
+					if (dir * normal1 > 0.0)
+					{
+						nhit = IntersectRayTriangle(from, dir, vertices[i1], vertices[j1], vertices[k1], dist);
+						if (nhit==1 && distance>dist)
+						{
+							normal1.Normalize();
+							hitNormal = normal1;
+							hitPoint = from + dist * dir;
+							distance = dist;
+							triID = f;
+							ret = true;
+						}						
+					}
+				}
+				return ret;
+			}
+			bool ret1 = false;
+			bool ret2 = false;
+			if (m_idRight >= 0) ret1 = m_rm->m_nodes[m_idRight].Raycast(from, dir, triID, distance, hitPoint, hitNormal);
+			if (m_idLeft >= 0)  ret2 = m_rm->m_nodes[m_idLeft].Raycast(from, dir, triID, distance, hitPoint, hitNormal);
+			return ret1 || ret2;
+		}
+		return false;
+	}
+}

indra/libhacd/hacdRaycastMesh.h

@@ -0,0 +1,97 @@
+
+
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef RAYCAST_MESH_H
+#define RAYCAST_MESH_H
+#include "hacdSArray.h"
+#include <vector>
+#include "hacdVersion.h"
+#include "hacdVector.h"
+#include "hacdSArray.h"
+
+namespace HACD
+{
+	typedef double Float;
+	class RaycastMesh;
+	class RMNode;
+	class BBox
+	{
+	public:
+		bool									Raycast(const Vec3<Float> & origin, const Vec3<Float> & dir, Float & distance) const;
+												BBox(void){}
+												~BBox(void){}
+	private:
+		Vec3<Float>								m_min;	
+		Vec3<Float>								m_max;
+		friend class RMNode;
+		friend class RaycastMesh;
+	};
+
+	enum RMSplitAxis
+	{
+		RMSplitAxis_X,
+		RMSplitAxis_Y,
+		RMSplitAxis_Z
+	};
+	class RMNode
+	{
+	public:
+		void									ComputeBB();
+		bool									Raycast(const Vec3<Float> & from, const Vec3<Float> & dir, long & triID, Float & distance, Vec3<Real> & hitPoint, Vec3<Real> & hitNormal) const;
+		void									Create(size_t depth, size_t maxDepth, size_t minLeafSize, Float minAxisSize);
+												~RMNode(void){}
+												RMNode(void)
+												{
+													m_idRight = m_idLeft = m_id = -1;
+													m_rm = 0;
+													m_leaf = false;
+												}
+		long									m_id;
+		long									m_idLeft;
+		long									m_idRight;
+		BBox									m_bBox;		
+		SArray<long, SARRAY_DEFAULT_MIN_SIZE>	m_triIDs;
+		RaycastMesh *							m_rm;
+		bool									m_leaf;
+	};
+
+	class RaycastMesh
+	{
+	public:
+	size_t										GetNNodes() const { return m_nNodes;}
+	size_t										AddNode() { m_nNodes++; return m_nNodes-1; }
+	void										ComputeBB();
+	bool										Raycast(const Vec3<Float> & from, const Vec3<Float> & dir, long & triID, Float & distance, Vec3<Real> & hitPoint, Vec3<Real> & hitNormal) const;
+	void										Initialize(size_t nVertices, size_t nTriangles, 
+														   Vec3<Float> *  vertices,  Vec3<long> * triangles, 
+														   size_t maxDepth=15, size_t minLeafSize = 4, Float minAxisSize = 2.0);	
+												RaycastMesh(void);
+												~RaycastMesh(void);
+	private : 
+
+	private:
+		Vec3<long> *							m_triangles;			
+		Vec3<Float> *							m_vertices;		
+		size_t									m_nVertices;
+		size_t									m_nTriangles;
+		RMNode *								m_nodes;
+		BBox									m_bBox;
+		size_t									m_nNodes;
+		size_t									m_nMaxNodes;
+		friend class RMNode;
+	};
+}
+#endif

indra/libhacd/hacdSArray.h

@@ -0,0 +1,154 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_SARRAY_H
+#define HACD_SARRAY_H
+#include "hacdVersion.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#define SARRAY_DEFAULT_MIN_SIZE 16
+
+namespace HACD
+{
+	//!	SArray.
+    template < typename T, size_t N > class SArray
+    {
+        public:
+            T &                     operator[](size_t i)       
+                                    {
+                                        T * const data = Data();
+                                        return data[i];
+                                    }
+            const T &               operator[](size_t i) const 
+                                    {
+                                        const T * const data = Data();
+                                        return data[i];
+                                    }
+            size_t                  Size() const               
+                                    { 
+                                        return m_size;
+                                    }
+            T * const               Data()
+                                    { 
+                                        return (m_maxSize == N)? m_data0 : m_data;
+                                    }
+            const T * const         Data() const
+                                    { 
+                                        return (m_maxSize == N)? m_data0 : m_data;
+                                    }
+            void                    Clear()
+                                    {
+                                        m_size = 0;
+                                        delete [] m_data;
+                                        m_data    = 0;
+                                        m_maxSize = N;
+                                    }
+            void                    PopBack()
+                                    {
+                                        --m_size;
+                                    }
+			void                    Resize(size_t size)
+									{
+										if (size > m_maxSize)
+										{
+                                            T * temp = new T[size];
+											memcpy(temp, Data(), m_size*sizeof(T));
+                                            delete [] m_data;
+                                            m_data = temp;
+                                            m_maxSize = size;
+										}
+									}
+            void                    PushBack(const T &  value)
+                                    {
+                                        if (m_size==m_maxSize)
+                                        {
+                                            size_t maxSize = (m_maxSize << 1);                                            
+                                            T * temp = new T[maxSize];
+                                            memcpy(temp, Data(), m_maxSize*sizeof(T));
+                                            delete [] m_data;
+                                            m_data = temp;
+                                            m_maxSize = maxSize;
+                                        }
+                                        T * const data = Data();
+                                        data[m_size++] = value;
+                                    }
+            bool                    Find(const T & value, size_t & pos)
+                                    {
+                                        T * const data = Data();
+                                        for(pos = 0; pos < m_size; ++pos)
+                                            if (value == data[pos]) return true;
+                                        return false;
+                                    }
+            bool                    Insert(const T & value)
+                                    {
+                                        size_t pos;
+                                        if (Find(value, pos)) return false;
+                                        PushBack(value);
+                                        return true;
+                                    }
+            bool                    Erase(const T & value)
+                                    {
+                                        size_t pos;
+                                        T * const data = Data();
+                                        if (Find(value, pos))
+                                        {
+                                            for(size_t j = pos+1;  j < m_size; ++j)
+                                                data[j-1] = data[j];
+                                            --m_size;
+                                            return true;
+                                        }
+                                        return false;
+                                    }
+            void                    operator=(const SArray & rhs)       
+                                    {
+                                        if (m_maxSize < rhs.m_size)
+                                        {
+                                            delete [] m_data;
+                                            m_maxSize = rhs.m_maxSize;
+                                            m_data = new T[m_maxSize];
+                                        }
+                                        m_size = rhs.m_size;
+                                        memcpy(Data(), rhs.Data(), m_size*sizeof(T));
+                                    }
+            void                    Initialize()
+                                    {
+                                        m_data    = 0;
+                                        m_size    = 0;
+                                        m_maxSize = N;
+                                    }
+                                    SArray(const SArray & rhs)
+                                    {
+                                        m_data    = 0;
+                                        m_size    = 0;
+                                        m_maxSize = N;
+                                        *this    = rhs;
+                                    }
+                                    SArray()
+                                    {
+                                        Initialize();
+                                    }
+                                    ~SArray()
+                                    {
+                                        delete [] m_data;
+                                    }
+        private:
+            T                       m_data0[N];
+            T *                     m_data;
+            size_t                  m_size;
+            size_t                  m_maxSize;
+       };    
+}
+#endif

indra/libhacd/hacdVector.h

@@ -0,0 +1,69 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_VECTOR_H
+#define HACD_VECTOR_H
+#include <math.h>
+#include <iostream>
+#include "hacdVersion.h"
+
+namespace HACD
+{
+    typedef double Real;
+	//!	Vector dim 3.
+	template < typename T > class Vec3
+	{
+	public:
+		T &					operator[](size_t i) { return m_data[i];}
+		const T	&			operator[](size_t i) const { return m_data[i];}
+		T &					X();
+		T &					Y();
+		T &					Z();
+		const T	&			X() const;
+		const T	&			Y() const;
+		const T	&			Z() const;
+		void				Normalize();
+		T					GetNorm() const;
+		void				operator= (const Vec3 & rhs);
+		void				operator+=(const Vec3 & rhs);
+		void				operator-=(const Vec3 & rhs);
+		void				operator-=(T a);
+		void				operator+=(T a);
+		void				operator/=(T a);
+		void				operator*=(T a);
+		Vec3				operator^ (const Vec3 & rhs) const;
+		T			    	operator* (const Vec3 & rhs) const;
+		Vec3				operator+ (const Vec3 & rhs) const;
+		Vec3				operator- (const Vec3 & rhs) const;
+		Vec3				operator- () const;
+		Vec3				operator* (T rhs) const;
+		Vec3				operator/ (T rhs) const;
+							Vec3();
+							Vec3(T a);
+							Vec3(T x, T y, T z);
+							Vec3(const Vec3 & rhs);
+		/*virtual*/			~Vec3(void);
+
+	private:
+		T					m_data[3];
+	};
+    template<typename T>
+    const bool Colinear(const Vec3<T> & a, const Vec3<T> & b, const Vec3<T> & c);
+    template<typename T>
+    const T Volume(const Vec3<T> & a, const Vec3<T> & b, const Vec3<T> & c, const Vec3<T> & d);
+    
+}
+#include "hacdVector.inl"	// template implementation
+#endif

indra/libhacd/hacdVector.inl

@@ -0,0 +1,178 @@
+#pragma once
+#ifndef HACD_VECTOR_INL
+#define HACD_VECTOR_INL
+namespace HACD
+{
+	template <typename T> 
+	inline Vec3<T> operator*(T lhs, const Vec3<T> & rhs)
+	{
+		return Vec3<T>(lhs * rhs.X(), lhs * rhs.Y(), lhs * rhs.Z());
+	}
+	template <typename T> 
+	inline T & Vec3<T>::X() 
+	{
+		return m_data[0];
+	}
+	template <typename T>	
+	inline  T &	Vec3<T>::Y() 
+	{
+		return m_data[1];
+	}
+	template <typename T>	
+	inline  T &	Vec3<T>::Z() 
+	{
+		return m_data[2];
+	}
+	template <typename T>	
+	inline  const T & Vec3<T>::X() const 
+	{
+		return m_data[0];
+	}
+	template <typename T>	
+	inline  const T & Vec3<T>::Y() const 
+	{
+		return m_data[1];
+	}
+	template <typename T>	
+	inline  const T & Vec3<T>::Z() const 
+	{
+		return m_data[2];
+	}
+	template <typename T>	
+	inline  void Vec3<T>::Normalize()
+	{
+		T n = sqrt(m_data[0]*m_data[0]+m_data[1]*m_data[1]+m_data[2]*m_data[2]);
+		if (n != 0.0) (*this) /= n;
+	}
+	template <typename T>	
+	inline  T Vec3<T>::GetNorm() const 
+	{ 
+		return sqrt(m_data[0]*m_data[0]+m_data[1]*m_data[1]+m_data[2]*m_data[2]);
+	}
+	template <typename T>	
+	inline  void Vec3<T>::operator= (const Vec3 & rhs)
+	{ 
+		this->m_data[0] = rhs.m_data[0]; 
+		this->m_data[1] = rhs.m_data[1]; 
+		this->m_data[2] = rhs.m_data[2]; 
+	}
+	template <typename T>	
+	inline  void Vec3<T>::operator+=(const Vec3 & rhs)
+	{ 
+		this->m_data[0] += rhs.m_data[0]; 
+		this->m_data[1] += rhs.m_data[1]; 
+		this->m_data[2] += rhs.m_data[2]; 
+	}     
+	template <typename T>  
+	inline void Vec3<T>::operator-=(const Vec3 & rhs)
+	{ 
+		this->m_data[0] -= rhs.m_data[0]; 
+		this->m_data[1] -= rhs.m_data[1]; 
+		this->m_data[2] -= rhs.m_data[2]; 
+	}
+	template <typename T>  
+	inline void Vec3<T>::operator-=(T a)
+	{ 
+		this->m_data[0] -= a; 
+		this->m_data[1] -= a; 
+		this->m_data[2] -= a; 
+	}
+	template <typename T>  
+	inline void Vec3<T>::operator+=(T a)
+	{ 
+		this->m_data[0] += a; 
+		this->m_data[1] += a; 
+		this->m_data[2] += a; 
+	}
+	template <typename T>  
+	inline void Vec3<T>::operator/=(T a)
+	{ 
+		this->m_data[0] /= a; 
+		this->m_data[1] /= a; 
+		this->m_data[2] /= a; 
+	}
+	template <typename T>  
+	inline void Vec3<T>::operator*=(T a)
+	{ 
+		this->m_data[0] *= a; 
+		this->m_data[1] *= a; 
+		this->m_data[2] *= a; 
+	}  
+	template <typename T>	
+	inline Vec3<T> Vec3<T>::operator^ (const Vec3<T> & rhs) const
+	{
+		return Vec3<T>(m_data[1] * rhs.m_data[2] - m_data[2] * rhs.m_data[1],
+					   m_data[2] * rhs.m_data[0] - m_data[0] * rhs.m_data[2],
+					   m_data[0] * rhs.m_data[1] - m_data[1] * rhs.m_data[0]);
+	}
+	template <typename T>
+	inline T Vec3<T>::operator*(const Vec3<T> & rhs) const
+	{
+		return (m_data[0] * rhs.m_data[0] + m_data[1] * rhs.m_data[1] + m_data[2] * rhs.m_data[2]);
+	}        
+	template <typename T>
+	inline Vec3<T> Vec3<T>::operator+(const Vec3<T> & rhs) const
+	{
+		return Vec3<T>(m_data[0] + rhs.m_data[0],m_data[1] + rhs.m_data[1],m_data[2] + rhs.m_data[2]);
+	}
+	template <typename T> 
+	inline  Vec3<T> Vec3<T>::operator-(const Vec3<T> & rhs) const
+	{
+		return Vec3<T>(m_data[0] - rhs.m_data[0],m_data[1] - rhs.m_data[1],m_data[2] - rhs.m_data[2]) ;
+	}     
+	template <typename T> 
+	inline  Vec3<T> Vec3<T>::operator-() const
+	{
+		return Vec3<T>(-m_data[0],-m_data[1],-m_data[2]) ;
+	}     
+
+	template <typename T> 
+	inline Vec3<T> Vec3<T>::operator*(T rhs) const
+	{
+		return Vec3<T>(rhs * this->m_data[0], rhs * this->m_data[1], rhs * this->m_data[2]);
+	}
+	template <typename T>
+	inline Vec3<T> Vec3<T>::operator/ (T rhs) const
+	{
+		return Vec3<T>(m_data[0] / rhs, m_data[1] / rhs, m_data[2] / rhs);
+	}
+	template <typename T>
+	inline Vec3<T>::Vec3(T a) 
+	{ 
+		m_data[0] = m_data[1] = m_data[2] = a; 
+	}
+	template <typename T>
+	inline Vec3<T>::Vec3(T x, T y, T z)
+	{
+		m_data[0] = x;
+		m_data[1] = y;
+		m_data[2] = z;
+	}
+	template <typename T>
+	inline Vec3<T>::Vec3(const Vec3 & rhs)
+	{		
+		m_data[0] = rhs.m_data[0];
+		m_data[1] = rhs.m_data[1];
+		m_data[2] = rhs.m_data[2];
+	}
+	template <typename T>
+	inline Vec3<T>::~Vec3(void){};
+
+	template <typename T>
+	inline Vec3<T>::Vec3() {}
+    
+    template<typename T>
+    inline const bool Colinear(const Vec3<T> & a, const Vec3<T> & b, const Vec3<T> & c)
+    {
+        return  ((c.Z() - a.Z()) * (b.Y() - a.Y()) - (b.Z() - a.Z()) * (c.Y() - a.Y()) == 0.0 /*EPS*/) &&
+                ((b.Z() - a.Z()) * (c.X() - a.X()) - (b.X() - a.X()) * (c.Z() - a.Z()) == 0.0 /*EPS*/) &&
+                ((b.X() - a.X()) * (c.Y() - a.Y()) - (b.Y() - a.Y()) * (c.X() - a.X()) == 0.0 /*EPS*/);
+    }
+    
+    template<typename T>
+    inline const T Volume(const Vec3<T> & a, const Vec3<T> & b, const Vec3<T> & c, const Vec3<T> & d)
+    {
+        return (a-d) * ((b-d) ^ (c-d));
+    }
+}
+#endif //HACD_VECTOR_INL

indra/libhacd/hacdVersion.h

@@ -0,0 +1,20 @@
+/* Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
+ All rights reserved.
+ 
+ 
+ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+ 
+ 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ 
+ 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+ 
+ 3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#pragma once
+#ifndef HACD_VERSION_H
+#define HACD_VERSION_H
+#define HACD_VERSION_MAJOR 0
+#define HACD_VERSION_MINOR 0
+#endif

indra/libndhacd/CMakeLists.txt

@@ -0,0 +1,9 @@
+project(libndhacd)
+
+include_directories(${LIBS_OPEN_DIR}/libhacd)
+
+set (SOURCE_FILES LLConvexDecomposition.cpp nd_hacdConvexDecomposition.cpp nd_hacdStructs.cpp nd_hacdUtils.cpp nd_EnterExitTracer.cpp nd_StructTracer.cpp )
+file(GLOB HEADER_FILES *.h)
+
+add_library( nd_hacdConvexDecomposition STATIC ${SOURCE_FILES} ${HEADER_FILES})
+

indra/libndhacd/LLConvexDecomposition.cpp

@@ -0,0 +1,80 @@
+/** 
+ * @file   LLConvexDecomposition.cpp
+ * @author falcon@lindenlab.com
+ * @brief  A stub implementation of LLConvexDecomposition interface
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#if defined(_WINDOWS)
+#	include "windowsincludes.h"
+#endif
+
+#ifndef NULL
+#define NULL 0 
+#endif
+
+#include "nd_hacdConvexDecomposition.h"
+
+#include "LLConvexDecomposition.h"
+
+
+/*static */bool LLConvexDecomposition::s_isInitialized = false;
+
+/*static*/LLConvexDecomposition* LLConvexDecomposition::getInstance()
+{
+	if ( !s_isInitialized )
+	{
+		return NULL;
+	}
+	else
+	{
+		return nd_hacdConvexDecomposition::getInstance();
+	}
+}
+
+/*static */LLCDResult LLConvexDecomposition::initSystem()
+{
+	LLCDResult result = nd_hacdConvexDecomposition::initSystem();
+	if ( result == LLCD_OK )
+	{
+		s_isInitialized = true;
+	}
+	return result;
+}
+
+/*static */LLCDResult LLConvexDecomposition::initThread()
+{
+	return nd_hacdConvexDecomposition::initThread();
+}
+
+/*static */LLCDResult LLConvexDecomposition::quitThread()
+{
+	return nd_hacdConvexDecomposition::quitThread();
+}
+
+/*static */LLCDResult LLConvexDecomposition::quitSystem()
+{
+	return nd_hacdConvexDecomposition::quitSystem();
+}
+
+

indra/libndhacd/LLConvexDecomposition.h

@@ -0,0 +1,231 @@
+/** 
+ * @file LLConvexDecomposition.cpp
+ * @brief LLConvexDecomposition interface definition
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_CONVEX_DECOMPOSITION
+#define LL_CONVEX_DECOMPOSITION
+
+typedef int bool32;
+
+#if defined(_WIN32) || defined(_WIN64)
+#define LLCD_CALL __cdecl
+#else
+#define LLCD_CALL
+#endif
+
+struct LLCDParam
+{
+	enum LLCDParamType
+	{
+		LLCD_INVALID = 0,
+		LLCD_INTEGER,
+		LLCD_FLOAT,
+		LLCD_BOOLEAN,
+		LLCD_ENUM
+	};
+
+	struct LLCDEnumItem
+	{
+		const char*	mName;
+		int			mValue;
+	};
+
+	union LLCDValue
+	{
+		float	mFloat;
+		int		mIntOrEnumValue;
+		bool32	mBool;
+	};
+
+	union LLCDParamDetails
+	{
+		struct {
+			LLCDValue mLow;
+			LLCDValue mHigh;
+			LLCDValue mDelta;
+		} mRange;
+
+		struct {
+			int				mNumEnums;
+			LLCDEnumItem*	mEnumsArray;
+		} mEnumValues;
+	};
+
+	const char*					mName;
+	const char*					mDescription;
+	LLCDParamType				mType;
+	LLCDParamDetails			mDetails;
+	LLCDValue					mDefault;
+	int							mStage;
+
+	// WARNING: Only the LLConvexDecomposition implementation
+	// should change this value
+	int							mReserved;
+};
+
+struct LLCDStageData 
+{
+	const char*	mName;
+	const char* mDescription;
+	bool32 mSupportsCallback;
+};
+
+struct LLCDMeshData
+{
+	enum IndexType 
+	{
+		INT_16,
+		INT_32
+	};
+
+	const float*	mVertexBase;
+	int				mVertexStrideBytes;
+	int				mNumVertices;
+	const void*		mIndexBase;
+	IndexType		mIndexType;
+	int				mIndexStrideBytes;
+	int				mNumTriangles;
+};
+
+struct LLCDHull
+{
+	const float*	mVertexBase;
+	int				mVertexStrideBytes;
+	int				mNumVertices;
+};
+
+enum LLCDResult
+{
+	LLCD_OK = 0,
+	LLCD_UNKOWN_ERROR,
+	LLCD_NULL_PTR,
+	LLCD_INVALID_STAGE,
+	LLCD_UNKNOWN_PARAM,
+	LLCD_BAD_VALUE,
+	LLCD_REQUEST_OUT_OF_RANGE,
+	LLCD_INVALID_MESH_DATA,
+	LLCD_INVALID_HULL_DATA,
+	LLCD_STAGE_NOT_READY,
+	LLCD_INVALID_THREAD,
+	LLCD_NOT_IMPLEMENTED
+};
+
+// This callback will receive a string describing the current subtask being performed 
+// as well as a pair of numbers indicating progress. (The values should not be interpreted
+// as a completion percentage as 'current' may be greater than 'final'.)
+// If the callback returns zero, the decomposition will be terminated
+typedef int				(LLCD_CALL *llcdCallbackFunc)(const char* description, int current, int final);
+
+class LLConvexDecomposition
+{
+public:
+	// Obtain a pointer to the actual implementation
+	static LLConvexDecomposition* getInstance();
+
+	static LLCDResult initSystem();
+	static LLCDResult initThread();
+	static LLCDResult quitThread();
+	static LLCDResult quitSystem();
+
+	// Generate a decomposition object handle
+	virtual void genDecomposition(int& decomp) = 0;
+	// Delete decomposition object handle
+	virtual void deleteDecomposition(int decomp) = 0;
+	// Bind given decomposition handle
+	// Commands operate on currently bound decomposition
+	virtual void bindDecomposition(int decomp) = 0;
+
+	// Sets *paramsOut to the address of the LLCDParam array and returns
+	// the number of parameters
+	virtual int getParameters(const LLCDParam** paramsOut) = 0;
+
+
+	// Sets *stagesOut to the address of the LLCDStageData array and returns
+	// the number of stages
+	virtual int getStages(const LLCDStageData** stagesOut) = 0;
+
+
+	// Set a parameter by name. Pass enum values as integers.
+	virtual LLCDResult	setParam(const char* name, float val)	= 0;
+	virtual LLCDResult	setParam(const char* name, int val)		= 0; 
+	virtual LLCDResult	setParam(const char* name, bool val)	= 0;
+
+
+	// Set incoming mesh data. Data is copied to local buffers and will
+	// persist until the next setMeshData call
+	virtual LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based ) = 0;
+
+
+	// Register a callback to be called periodically during the specified stage
+	// See the typedef above for more information
+	virtual LLCDResult	registerCallback( int stage, llcdCallbackFunc callback ) = 0;
+
+
+	// Execute the specified decomposition stage
+	virtual LLCDResult	executeStage(int stage) = 0;
+	virtual LLCDResult	buildSingleHull() = 0 ;
+
+
+	// Gets the number of hulls generated by the specified decompositions stage
+	virtual int getNumHullsFromStage(int stage) = 0;
+
+
+	// Populates hullOut to reference the internal copy of the requested hull
+	// The data will persist only until the next executeStage call for that stage.
+	virtual LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut ) = 0;
+	virtual LLCDResult  getSingleHull( LLCDHull* hullOut ) = 0 ;
+
+	// TODO: Implement lock of some kind to disallow this call if data not yet ready
+	// Populates the meshDataOut to reference the utility's copy of the mesh geometry
+	// for the hull and stage specified. 
+	// You must copy this data if you want to continue using it after the next executeStage
+	// call
+	virtual LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut) = 0;
+
+
+	// Creates a mesh from hullIn and temporarily stores it internally in the utility.
+	// The mesh data persists only until the next call to getMeshFromHull
+	virtual LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut ) = 0;
+
+	// Takes meshIn, generates a single convex hull from it, converts that to a mesh
+	// stored internally, and populates meshOut to reference the internally stored data.
+	// The data is persistent only until the next call to generateSingleHullMeshFromMesh
+	virtual LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut) = 0;
+
+	//
+	/// Debug
+	virtual void loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut) = 0;
+
+	virtual bool isFunctional()=0;
+
+private:
+	static bool s_isInitialized;
+};
+
+// Pull in our trace interface
+#include "ndConvexDecomposition.h"
+
+#endif //LL_CONVEX_DECOMPOSITION
+

indra/libndhacd/LLConvexDecompositionStubImpl.cpp

@@ -0,0 +1,148 @@
+/** 
+ * @file   LLConvexDecompositionStubImpl.cpp
+ * @author falcon@lindenlab.com
+ * @brief  A stub implementation of LLConvexDecomposition
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+#include <string.h>
+#include <memory>
+#include "LLConvexDecompositionStubImpl.h"
+
+LLConvexDecomposition* LLConvexDecompositionImpl::getInstance()
+{
+	return NULL;
+}
+
+LLCDResult LLConvexDecompositionImpl::initSystem()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::initThread()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::quitThread()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::quitSystem()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+void LLConvexDecompositionImpl::genDecomposition(int& decomp)
+{
+
+}
+
+void LLConvexDecompositionImpl::deleteDecomposition(int decomp)
+{
+
+}
+
+void LLConvexDecompositionImpl::bindDecomposition(int decomp)
+{
+
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, float val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, bool val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, int val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setMeshData( const LLCDMeshData* data, bool vertex_based )
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::registerCallback(int stage, llcdCallbackFunc callback )
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::buildSingleHull()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::executeStage(int stage)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+int LLConvexDecompositionImpl::getNumHullsFromStage(int stage)
+{
+	return 0;
+}
+
+LLCDResult LLConvexDecompositionImpl::getSingleHull( LLCDHull* hullOut ) 
+{
+	memset( hullOut, 0, sizeof(LLCDHull) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::getHullFromStage( int stage, int hull, LLCDHull* hullOut )
+{
+	memset( hullOut, 0, sizeof(LLCDHull) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut )
+{
+	memset( meshDataOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult	LLConvexDecompositionImpl::getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut )
+{
+	memset( meshOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::generateSingleHullMeshFromMesh(LLCDMeshData* meshIn, LLCDMeshData* meshOut)
+{
+	memset( meshOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+void LLConvexDecompositionImpl::loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut)
+{
+	static LLCDMeshData meshData;
+	memset( &meshData, 0, sizeof(LLCDMeshData) );
+	*meshDataOut = &meshData;
+}

indra/libndhacd/LLConvexDecompositionStubImpl.h

@@ -0,0 +1,97 @@
+/** 
+ * @file   LLConvexDecompositionStubImpl.h
+ * @author falcon@lindenlab.com
+ * @brief  A stub implementation of LLConvexDecomposition
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+#ifndef LL_CONVEX_DECOMP_UTIL_H
+#define LL_CONVEX_DECOMP_UTIL_H
+
+#include "LLConvexDecomposition.h"
+
+class LLConvexDecompositionImpl : public LLConvexDecomposition
+{
+	public:
+
+		virtual ~LLConvexDecompositionImpl() {}
+
+		static LLConvexDecomposition* getInstance();
+		static LLCDResult initSystem();
+		static LLCDResult initThread();
+		static LLCDResult quitThread();
+		static LLCDResult quitSystem();
+
+		// Generate a decomposition object handle
+		void genDecomposition(int& decomp);
+		// Delete decomposition object handle
+		void deleteDecomposition(int decomp);
+		// Bind given decomposition handle
+		// Commands operate on currently bound decomposition
+		void bindDecomposition(int decomp);
+
+		// Sets *paramsOut to the address of the LLCDParam array and returns
+		// the length of the array
+		int getParameters(const LLCDParam** paramsOut) 
+		{ 
+			*paramsOut = NULL; 
+			return 0; 
+		}
+
+		int getStages(const LLCDStageData** stagesOut) 
+		{ 
+			*stagesOut = NULL; 
+			return 0; 
+		}
+
+		// Set a parameter by name. Returns false if out of bounds or unsupported parameter
+		LLCDResult	setParam(const char* name, float val);
+		LLCDResult	setParam(const char* name, int val);
+		LLCDResult	setParam(const char* name, bool val);
+		LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based );
+		LLCDResult	registerCallback(int stage, llcdCallbackFunc callback );
+
+		LLCDResult	executeStage(int stage);
+		LLCDResult	buildSingleHull() ;
+
+		int getNumHullsFromStage(int stage);
+
+		LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut );
+		LLCDResult  getSingleHull( LLCDHull* hullOut ) ;
+		
+		// TODO: Implement lock of some kind to disallow this call if data not yet ready
+		LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut);
+		LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut );
+
+		// For visualizing convex hull shapes in the viewer physics shape display
+		LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut);
+
+		/// Debug
+		void loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut);
+
+	private:
+		LLConvexDecompositionImpl() {}
+};
+
+#endif //LL_CONVEX_DECOMP_UTIL_H

indra/libndhacd/ndConvexDecomposition.h

@@ -0,0 +1,58 @@
+#ifndef ND_CONVEXDECOMPOSITION_H
+#define ND_CONVEXDECOMPOSITION_H
+
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ND_HASCONVEXDECOMP_TRACER
+ #define ND_HASCONVEXDECOMP_TRACER
+#endif
+
+class ndConvexDecompositionTracer
+{
+public:
+	enum ETraceLevel
+	{
+		eNone = 0,
+		eTraceFunctions = 0x1,
+		eTraceData = 0x2,
+	};
+	
+	virtual ~ndConvexDecompositionTracer()
+	{ }
+
+	virtual void trace( char const *a_strMsg ) = 0;
+
+	virtual void startTraceData( char const *a_strWhat) = 0;
+	virtual void traceData( char const *a_strData ) = 0;
+	virtual void endTraceData() = 0;
+
+	virtual int getLevel() = 0;
+
+	virtual void addref() = 0;
+	virtual void release() = 0;
+};
+
+class ndConvexDecompositionTracable
+{
+public:
+	virtual void setTracer( ndConvexDecompositionTracer *) = 0;
+};
+
+
+#endif

indra/libndhacd/nd_EnterExitTracer.cpp

@@ -0,0 +1,51 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "nd_EnterExitTracer.h"
+
+#include <vector>
+#include <sstream>
+
+void EnterExitTracer::doTrace( char const *aPrefix )
+{
+	if( !mFunc || !mTracer )
+		return;
+
+	if( ndConvexDecompositionTracer::eTraceFunctions == (mTracer->getLevel() & ndConvexDecompositionTracer::eTraceFunctions ) )
+		return;
+
+	std::stringstream str;
+	if( aPrefix )
+		str << aPrefix;
+
+	str << mFunc;	
+	mTracer->trace( str.str().c_str() );
+}
+
+EnterExitTracer::EnterExitTracer( char const *aFunc, ndConvexDecompositionTracer *aTracer )
+	: mFunc( aFunc )
+	, mTracer( aTracer )
+{
+	doTrace( "enter: " );
+}
+
+EnterExitTracer::~EnterExitTracer( )
+{
+	doTrace( "exit: " );
+}
+

indra/libndhacd/nd_EnterExitTracer.h

@@ -0,0 +1,43 @@
+#ifndef ND_ENTEREXITTRACER_H
+#define ND_ENTEREXITTRACER_H
+
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "ndConvexDecomposition.h"
+
+class EnterExitTracer
+{
+	char const *mFunc;
+	ndConvexDecompositionTracer *mTracer;
+
+	void doTrace( char const *aPrefix );
+
+public:
+	EnterExitTracer( char const *aFunc, ndConvexDecompositionTracer *aTracer );
+	~EnterExitTracer( );
+	
+};
+
+#ifdef __GNUC__
+   #define TRACE_FUNC(ATRACER) EnterExitTracer oETTrace( __PRETTY_FUNCTION__, ATRACER );
+#else
+   #define TRACE_FUNC(ATRACER) EnterExitTracer oETTrace( __FUNCTION__, ATRACER );
+#endif
+
+#endif

indra/libndhacd/nd_StructTracer.cpp

@@ -0,0 +1,188 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "nd_StructTracer.h"
+#include <sstream>
+#include <iomanip>
+
+using namespace std;
+
+namespace ndStructTracer
+{
+	bool doTrace( ndConvexDecompositionTracer *aTracer )
+	{
+		if( !aTracer )
+			return false;
+
+		return ndConvexDecompositionTracer::eTraceData == (aTracer->getLevel() & ndConvexDecompositionTracer::eTraceData) ;
+	}
+
+
+	template<typename T> void traceVecDbl( T const &aValue, ndConvexDecompositionTracer *aTracer )
+	{
+		stringstream str;
+		str << fixed
+			<< "\tX: " << aValue.X()
+			<< " Y: " << aValue.Y()
+			<< " Z: " << aValue.Z();
+
+		aTracer->traceData( str.str().c_str() );
+	}
+
+	template< typename T> void traceVecDoubles( vector< T > const &aVertices, ndConvexDecompositionTracer *aTracer )
+	{
+		for( size_t i = 0; i < aVertices.size(); ++i )
+			traceVecDbl( aVertices[i], aTracer ); 
+	}
+
+	void traceVertices( vector< tVecDbl > const &aVertices, ndConvexDecompositionTracer *aTracer )
+	{
+		aTracer->traceData( "Triangles\n" );
+		traceVecDoubles( aVertices, aTracer );
+	}
+
+	void traceTriangles( vector< tVecLong > const &aTriangles, ndConvexDecompositionTracer *aTracer )
+	{
+		aTracer->traceData( "Vertices\n" );
+		traceVecDoubles( aTriangles, aTracer );
+	}
+
+	void trace( DecompData const &aData, ndConvexDecompositionTracer *aTracer )
+	{
+		if( !doTrace( aTracer ) )
+			return;
+
+		aTracer->startTraceData("Hulls");
+
+		stringstream str;
+		str << "Hulls: " << aData.mHulls.size();
+		aTracer->traceData( str.str().c_str() );
+		str.seekp(0);
+
+		for( size_t i = 0; i < aData.mHulls.size(); ++i )
+		{
+			str << "Hull #" << i;
+			aTracer->traceData( str.str().c_str() );
+			str.seekp(0);
+
+			DecompHull const &oHull( aData.mHulls[i] );
+			traceVertices( oHull.mVertices, aTracer );
+			traceTriangles( oHull.mTriangles, aTracer );
+		}
+
+		aTracer->endTraceData();
+	}
+
+	template< typename T> void traceVertex( T aX, T aY, T aZ, ndConvexDecompositionTracer *aTracer )
+	{
+		stringstream str;
+		str << fixed
+			<< "X: " << aX
+			<< "Y: " << aY
+			<< "Z: " << aZ;
+
+		aTracer->traceData( str.str().c_str() );
+	}
+
+	template< typename T> void traceTriangle( void *& aPtr, int aStride, ndConvexDecompositionTracer *aTracer )
+	{
+		T *pData = reinterpret_cast< T* >(aPtr);
+		long X( pData[0] ),	Y( pData[1] ),	Z( pData[2] );
+
+		traceVertex( X, Y, Z, aTracer );
+
+		pData += aStride;
+		aPtr = pData;
+	}
+
+	void traceVertices( int aNumVertices, float const *aVertices, int aStride, ndConvexDecompositionTracer *aTracer )
+	{
+		for( int i = 0; i < aNumVertices; ++i )
+		{
+			float X( aVertices[0] ), Y( aVertices[1] ), Z( aVertices[2] );
+			traceVertex( X, Y, Z, aTracer );
+			aVertices += aStride;
+		}
+	}
+
+	void traceTriangles( LLCDMeshData const *aData, ndConvexDecompositionTracer *aTracer )
+	{
+		int nCount = aData->mNumTriangles;
+		int nStride = aData->mIndexStrideBytes;
+		void *pData = const_cast<void*>( aData->mIndexBase );
+		int nIndexType = aData->mIndexType;
+
+		if ( LLCDMeshData::INT_16 == nIndexType )
+			nStride /= 2;
+		else
+			nStride /= 4;
+			
+		for ( int i = 0; i < nCount; ++i )
+		{
+			if( LLCDMeshData::INT_16  == nIndexType )
+				traceTriangle< hacdUINT16 >( pData, nStride, aTracer );
+			else
+				traceTriangle< hacdUINT32 >( pData, nStride, aTracer );
+		}
+	}
+
+	void trace( LLCDMeshData const *aData, bool aVertexBased, ndConvexDecompositionTracer *aTracer )
+	{
+		if( !doTrace( aTracer ) )
+			return;
+
+		aTracer->startTraceData("LLCDMeshData");
+
+		string strVBased("true");
+		if( !aVertexBased )
+			strVBased = "false";
+
+		stringstream str;
+		str << "LLCDMeshData vertex based: " << strVBased
+			<< "# vertices " << aData->mNumVertices
+			<< "# triangles " << aData->mNumTriangles;
+
+		aTracer->traceData( str.str().c_str() );
+
+		traceVertices( aData->mNumVertices, aData->mVertexBase, aData->mVertexStrideBytes/sizeof(float), aTracer );
+
+		if( !aVertexBased )
+			traceTriangles( aData, aTracer );
+			
+		aTracer->endTraceData();
+	}
+
+	void trace( LLCDHull const *aData, ndConvexDecompositionTracer *aTracer )
+	{
+		if( !doTrace( aTracer ) )
+			return;
+
+		aTracer->startTraceData("LLCDHull");
+
+		stringstream str;
+		str << "LLCDHull # vertices " << aData->mNumVertices;
+
+		aTracer->traceData( str.str().c_str() );
+
+		traceVertices( aData->mNumVertices, aData->mVertexBase, aData->mVertexStrideBytes/sizeof(float), aTracer );
+
+
+		aTracer->endTraceData();
+	}
+};
+

indra/libndhacd/nd_StructTracer.h

@@ -0,0 +1,34 @@
+#ifndef ND_STRUCTTRACER_H
+#define ND_STRUCTTRACER_H
+
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include "ndConvexDecomposition.h"
+#include "LLConvexDecomposition.h"
+#include "nd_hacdStructs.h"
+
+namespace ndStructTracer
+{
+	void trace( DecompData const &aData, ndConvexDecompositionTracer *aTracer );
+	void trace( LLCDMeshData const *aData, bool aVertexBased, ndConvexDecompositionTracer *aTracer );
+	void trace( LLCDHull const *aData, ndConvexDecompositionTracer *aTracer );
+};
+
+#endif

indra/libndhacd/nd_hacdConvexDecomposition.cpp

@@ -0,0 +1,393 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <string.h>
+#include <memory>
+#include "nd_hacdConvexDecomposition.h"
+
+#include "nd_hacdDefines.h"
+#include "nd_hacdStructs.h"
+#include "nd_hacdUtils.h"
+#include "ndConvexDecomposition.h"
+#include "nd_EnterExitTracer.h"
+#include "nd_StructTracer.h"
+
+LLCDStageData nd_hacdConvexDecomposition::mStages[1];
+
+LLCDParam nd_hacdConvexDecomposition::mParams[4];
+LLCDParam::LLCDEnumItem nd_hacdConvexDecomposition::mMethods[1];
+LLCDParam::LLCDEnumItem nd_hacdConvexDecomposition::mQuality[1];
+LLCDParam::LLCDEnumItem nd_hacdConvexDecomposition::mSimplify[1];
+
+LLConvexDecomposition* nd_hacdConvexDecomposition::getInstance()
+{
+	static nd_hacdConvexDecomposition sImpl;
+	return &sImpl;
+}
+
+nd_hacdConvexDecomposition::nd_hacdConvexDecomposition()
+{
+	mNextId = 0;
+	mCurrentDecoder = 0;
+	mSingleHullMeshFromMesh = new HACDDecoder();
+	mTracer = 0;
+}
+
+nd_hacdConvexDecomposition::~nd_hacdConvexDecomposition()
+{
+	if( mTracer )
+		mTracer->release();
+}
+
+LLCDResult nd_hacdConvexDecomposition::initSystem()
+{
+	memset( &mStages[0], 0, sizeof( mStages ) );
+	memset( &mParams[0], 0, sizeof( mParams ) );
+	memset( &mMethods[0], 0, sizeof( mMethods ) );
+	memset( &mQuality[0], 0, sizeof( mQuality ) );
+	memset( &mSimplify[0], 0, sizeof( mSimplify ) );
+
+	mStages[0].mName = "Decompose";
+	mStages[0].mDescription = NULL;
+
+	mMethods[0].mName = "Default";
+	mMethods[0].mValue = 0;
+
+	mQuality[0].mName = "Default";
+	mQuality[0].mValue = 0;
+
+	mSimplify[0].mName = "None";
+	mSimplify[0].mValue = 0;
+
+	mParams[0].mName = "nd_AlwaysNeedTriangles";
+	mParams[0].mDescription = 0;
+	mParams[0].mType = LLCDParam::LLCD_BOOLEAN;
+	mParams[0].mDefault.mBool = true;
+
+	mParams[1].mName = "Method";
+	mParams[1].mType = LLCDParam::LLCD_ENUM;
+	mParams[1].mDetails.mEnumValues.mNumEnums = sizeof(mMethods)/sizeof(LLCDParam::LLCDEnumItem);
+	mParams[1].mDetails.mEnumValues.mEnumsArray = mMethods;
+	mParams[1].mDefault.mIntOrEnumValue = 0;
+
+	mParams[2].mName = "Decompose Quality";
+	mParams[2].mType = LLCDParam::LLCD_ENUM;
+	mParams[2].mDetails.mEnumValues.mNumEnums = sizeof(mQuality)/sizeof(LLCDParam::LLCDEnumItem);
+	mParams[2].mDetails.mEnumValues.mEnumsArray = mQuality;
+	mParams[2].mDefault.mIntOrEnumValue = 0;
+
+	mParams[3].mName = "Simplify Method";
+	mParams[3].mType = LLCDParam::LLCD_ENUM;
+	mParams[3].mDetails.mEnumValues.mNumEnums = sizeof(mSimplify)/sizeof(LLCDParam::LLCDEnumItem);
+	mParams[3].mDetails.mEnumValues.mEnumsArray = mSimplify;
+	mParams[3].mDefault.mIntOrEnumValue = 0;
+
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::initThread()
+{
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::quitThread()
+{
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::quitSystem()
+{
+	return LLCD_OK;
+}
+
+void nd_hacdConvexDecomposition::genDecomposition( int& decomp )
+{
+	HACDDecoder *pGen = new HACDDecoder();
+	decomp = mNextId;
+	++mNextId;
+
+	mDecoders[ decomp ] = pGen;
+}
+
+void nd_hacdConvexDecomposition::deleteDecomposition( int decomp )
+{
+	delete mDecoders[ decomp ];
+	mDecoders.erase( decomp );
+}
+
+void nd_hacdConvexDecomposition::bindDecomposition( int decomp )
+{
+	TRACE_FUNC( mTracer );
+	mCurrentDecoder = decomp;
+}
+
+LLCDResult nd_hacdConvexDecomposition::setParam( const char* name, float val )
+{
+	TRACE_FUNC( mTracer );
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::setParam( const char* name, bool val )
+{
+	TRACE_FUNC( mTracer );
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::setParam( const char* name, int val )
+{
+	TRACE_FUNC( mTracer );
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::setMeshData( const LLCDMeshData* data, bool vertex_based )
+{
+	TRACE_FUNC( mTracer );
+	ndStructTracer::trace( data, vertex_based, mTracer );
+
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+	return ::setMeshData( data, vertex_based, pC );
+}
+
+LLCDResult nd_hacdConvexDecomposition::registerCallback( int stage, llcdCallbackFunc callback )
+{
+	TRACE_FUNC( mTracer );
+	if( mDecoders.end() == mDecoders.find( mCurrentDecoder ) )
+		return LLCD_STAGE_NOT_READY;
+
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+	pC->mCallback = callback;
+
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::buildSingleHull()
+{
+	TRACE_FUNC( mTracer );
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::executeStage( int stage )
+{
+	TRACE_FUNC( mTracer );
+	if ( stage < 0 || stage >= NUM_STAGES )
+		return LLCD_INVALID_STAGE;
+
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+	tHACD *pHACD = init( 1, MIN_NUMBER_OF_CLUSTERS, MAX_VERTICES_PER_HULL, CONNECT_DISTS[0], pC );
+
+	DecompData oRes = decompose( pHACD );
+	ndStructTracer::trace( oRes, mTracer );
+
+	delete pHACD;
+
+	pC->mStages[ stage ] = oRes;
+
+	return LLCD_OK;
+}
+
+int nd_hacdConvexDecomposition::getNumHullsFromStage( int stage )
+{
+	TRACE_FUNC( mTracer );
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+
+	if ( !pC )
+		return 0;
+
+	if ( stage < 0 || static_cast<size_t>(stage) >= pC->mStages.size() )
+		return 0;
+
+	return pC->mStages[stage].mHulls.size();
+}
+
+DecompData toSingleHull( HACDDecoder *aDecoder, LLCDResult &aRes, ndConvexDecompositionTracer *aTracer )
+{
+	TRACE_FUNC( aTracer );
+	aRes = LLCD_REQUEST_OUT_OF_RANGE;
+
+	for ( int i = 0; i < TO_SINGLE_HULL_TRIES; ++i )
+	{
+		tHACD *pHACD = init( CONCAVITY_FOR_SINGLE_HULL[i], 1, MAX_VERTICES_PER_HULL, CONNECT_DISTS[i], aDecoder );
+
+		DecompData oRes = decompose( pHACD );
+		delete pHACD;
+
+		ndStructTracer::trace( oRes, aTracer );
+
+		if ( oRes.mHulls.size() == 1 )
+		{
+			aRes = LLCD_OK;
+			return oRes;
+		}
+	}
+
+	return DecompData();
+}
+
+LLCDResult nd_hacdConvexDecomposition::getSingleHull( LLCDHull* hullOut )
+{
+	TRACE_FUNC( mTracer );
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+
+	memset( hullOut, 0, sizeof( LLCDHull ) );
+
+	LLCDResult res;
+
+	// Will already trace oRes
+	DecompData oRes = ::toSingleHull( pC, res, mTracer );
+
+	if ( LLCD_OK != res || oRes.mHulls.size() != 1 )
+		return res;
+
+	pC->mSingleHull = oRes.mHulls[0];
+	pC->mSingleHull.toLLHull( hullOut );
+
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::getHullFromStage( int stage, int hull, LLCDHull* hullOut )
+{
+	TRACE_FUNC( mTracer );
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+
+	memset( hullOut, 0, sizeof( LLCDHull ) );
+
+	if ( stage < 0 || static_cast<size_t>(stage) >= pC->mStages.size() )
+		return LLCD_INVALID_STAGE;
+
+	DecompData &oData = pC->mStages[ stage ];
+
+	if ( hull < 0 ||static_cast<size_t>(hull) >= oData.mHulls.size() )
+		return LLCD_REQUEST_OUT_OF_RANGE;
+
+	oData.mHulls[ hull ].toLLHull( hullOut );
+	ndStructTracer::trace( hullOut, mTracer );
+
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut )
+{
+	TRACE_FUNC( mTracer );
+	HACDDecoder *pC = mDecoders[ mCurrentDecoder ];
+
+	memset( meshDataOut, 0, sizeof( LLCDHull ) );
+
+	if ( stage < 0 || static_cast<size_t>(stage) >= pC->mStages.size() )
+		return LLCD_INVALID_STAGE;
+
+	DecompData &oData = pC->mStages[ stage ];
+
+	if ( hull < 0 || static_cast<size_t>(hull) >= oData.mHulls.size() )
+		return LLCD_REQUEST_OUT_OF_RANGE;
+
+	oData.mHulls[ hull ].toLLMesh( meshDataOut );
+	ndStructTracer::trace( meshDataOut, true, mTracer );
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut )
+{
+	TRACE_FUNC( mTracer );
+	memset( meshOut, 0, sizeof( LLCDMeshData ) );
+
+	mMeshToHullVertices.clear();
+	mMeshToHullTriangles.clear();
+
+	if( !hullIn || !hullIn->mVertexBase || !meshOut )
+		return LLCD_NULL_PTR;
+	if( hullIn->mVertexStrideBytes < 3*sizeof(float) || hullIn->mNumVertices < 3 )
+		return LLCD_INVALID_HULL_DATA;
+
+	LLCDResult oRet = convertHullToMesh( hullIn, mMeshToHullVertices, mMeshToHullTriangles );
+
+	if( LLCD_OK != oRet )
+		return oRet;
+
+	meshOut->mVertexStrideBytes = sizeof( float )*3;
+	meshOut->mNumVertices = mMeshToHullVertices.size()/3;
+	meshOut->mVertexBase = &mMeshToHullVertices[0];
+
+	meshOut->mIndexType = LLCDMeshData::INT_32;
+	meshOut->mIndexStrideBytes = sizeof( hacdUINT32 ) * 3;
+	meshOut->mNumTriangles = mMeshToHullTriangles.size()/3;
+	meshOut->mIndexBase = &mMeshToHullTriangles[0];
+
+	return LLCD_OK;
+}
+
+LLCDResult nd_hacdConvexDecomposition::generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut )
+{
+	TRACE_FUNC( mTracer );
+	memset( meshOut, 0, sizeof( LLCDMeshData ) );
+	mSingleHullMeshFromMesh->clear();
+	LLCDResult res = ::setMeshData( meshIn, meshIn->mNumVertices > 3, mSingleHullMeshFromMesh );
+
+	if ( LLCD_OK != res )
+		return res;
+
+	// Will already trace oRes
+	DecompData oRes = ::toSingleHull( mSingleHullMeshFromMesh, res, mTracer );
+
+	if ( LLCD_OK != res || oRes.mHulls.size() != 1 )
+		return res;
+
+	mSingleHullMeshFromMesh->mSingleHull = oRes.mHulls[0];
+	mSingleHullMeshFromMesh->mSingleHull.toLLMesh( meshOut );
+
+	return LLCD_OK;
+}
+
+void nd_hacdConvexDecomposition::loadMeshData( const char* fileIn, LLCDMeshData** meshDataOut )
+{
+	TRACE_FUNC( mTracer );
+	static LLCDMeshData meshData;
+	memset( &meshData, 0, sizeof( LLCDMeshData ) );
+	*meshDataOut = &meshData;
+}
+
+int nd_hacdConvexDecomposition::getParameters( const LLCDParam** paramsOut )
+{
+	TRACE_FUNC( mTracer );
+	*paramsOut = mParams;
+	return sizeof(mParams)/sizeof(LLCDParam);
+}
+
+int nd_hacdConvexDecomposition::getStages( const LLCDStageData** stagesOut )
+{
+	TRACE_FUNC( mTracer );
+
+	*stagesOut = mStages;
+	return sizeof(mStages)/sizeof(LLCDStageData);
+}
+
+void nd_hacdConvexDecomposition::setTracer( ndConvexDecompositionTracer * aTracer)
+{
+	if( mTracer )
+		mTracer->release();
+
+	mTracer = aTracer;
+
+	if( mTracer )
+		mTracer->addref();
+}
+
+
+bool nd_hacdConvexDecomposition::isFunctional()
+{
+	return true;
+}

indra/libndhacd/nd_hacdConvexDecomposition.h

@@ -0,0 +1,103 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ND_HACD_CONVEXDECOMP_H
+#define ND_HACD_CONVEXDECOMP_H
+
+#include "LLConvexDecomposition.h"
+
+#include <map>
+#include <vector>
+
+struct HACDDecoder;
+
+class nd_hacdConvexDecomposition : public LLConvexDecomposition, public ndConvexDecompositionTracable
+{
+	int mNextId;
+	int mCurrentDecoder;
+	std::map< int, HACDDecoder * > mDecoders;
+	HACDDecoder *mSingleHullMeshFromMesh;
+
+	std::vector< float > mMeshToHullVertices;
+	std::vector< int > mMeshToHullTriangles;
+
+	ndConvexDecompositionTracer *mTracer;
+
+	static LLCDStageData mStages[1];
+
+	static LLCDParam mParams[4];
+	static LLCDParam::LLCDEnumItem mMethods[1];
+	static LLCDParam::LLCDEnumItem mQuality[1];
+	static LLCDParam::LLCDEnumItem mSimplify[1];
+
+public:
+	virtual ~nd_hacdConvexDecomposition();
+
+	static LLConvexDecomposition* getInstance();
+	static LLCDResult initSystem();
+	static LLCDResult initThread();
+	static LLCDResult quitThread();
+	static LLCDResult quitSystem();
+
+	// Generate a decomposition object handle
+	void genDecomposition( int& decomp );
+	// Delete decomposition object handle
+	void deleteDecomposition( int decomp );
+	// Bind given decomposition handle
+	// Commands operate on currently bound decomposition
+	void bindDecomposition( int decomp );
+
+	// Sets *paramsOut to the address of the LLCDParam array and returns
+	// the length of the array
+	int getParameters( const LLCDParam** paramsOut );
+	int getStages( const LLCDStageData** stagesOut ) ;
+
+	// Set a parameter by name. Returns false if out of bounds or unsupported parameter
+	LLCDResult	setParam( const char* name, float val );
+	LLCDResult	setParam( const char* name, int val );
+	LLCDResult	setParam( const char* name, bool val );
+	LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based );
+	LLCDResult	registerCallback( int stage, llcdCallbackFunc callback );
+
+	LLCDResult	executeStage( int stage );
+	LLCDResult	buildSingleHull() ;
+
+	int getNumHullsFromStage( int stage );
+
+	LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut );
+	LLCDResult  getSingleHull( LLCDHull* hullOut ) ;
+
+	// TODO: Implement lock of some kind to disallow this call if data not yet ready
+	LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut );
+	LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut );
+
+	// For visualizing convex hull shapes in the viewer physics shape display
+	LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut );
+
+	/// Debug
+	void loadMeshData( const char* fileIn, LLCDMeshData** meshDataOut );
+
+	virtual void setTracer( ndConvexDecompositionTracer *);
+
+	virtual bool isFunctional();
+
+private:
+	nd_hacdConvexDecomposition();
+};
+
+#endif

indra/libndhacd/nd_hacdDefines.h

@@ -0,0 +1,46 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ND_HACD_DEFINES_H
+#define ND_HACD_DEFINES_H
+
+#include "hacdHACD.h"
+
+#define NUM_STAGES 1
+
+typedef unsigned short hacdUINT16;
+typedef unsigned int hacdUINT32;
+
+typedef HACD::HACD tHACD;
+typedef HACD::Vec3< double > tVecDbl;
+typedef HACD::Vec3< long > tVecLong;
+
+typedef tVecLong ( *fFromIXX )( void const *&, int );
+
+const int MAX_VERTICES_PER_HULL     = 256;    // see http://wiki.secondlife.com/wiki/Mesh/Mesh_physics
+const int MIN_NUMBER_OF_CLUSTERS    = 1;
+
+int const TO_SINGLE_HULL_TRIES = 10;
+
+// Use a high value so HACD will generate just one hull. For now we use the same concavity for each run.
+int const CONCAVITY_FOR_SINGLE_HULL[  TO_SINGLE_HULL_TRIES ] = { 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000, 10000 };
+
+// Max distance to connect CC. Increase this each run.
+double const CONNECT_DISTS[ TO_SINGLE_HULL_TRIES ] = { 30, 60, 120, 240, 480, 960, 1920, 3840, 7680, 10000 };
+
+#endif

indra/libndhacd/nd_hacdStructs.cpp

@@ -0,0 +1,107 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "nd_hacdStructs.h"
+#include "LLConvexDecomposition.h"
+
+void DecompHull::clear()
+{
+	mVertices.clear();
+	mTriangles.clear();
+	mLLVertices.clear();
+	mLLTriangles.clear();
+}
+
+void DecompHull::computeLLVertices()
+{
+	if ( mLLVertices.size()*3 != mVertices.size() )
+	{
+		for ( size_t i = 0; i < mVertices.size(); ++i )
+		{
+			mLLVertices.push_back( static_cast<float>( mVertices[i].X() ) );
+			mLLVertices.push_back( static_cast<float>( mVertices[i].Y() ) );
+			mLLVertices.push_back( static_cast<float>( mVertices[i].Z() ) );
+		}
+	}
+}
+
+void DecompHull::computeLLTriangles()
+{
+	if ( mLLTriangles.size()*3 != mTriangles.size() )
+	{
+		for ( size_t i = 0; i < mTriangles.size(); ++i )
+		{
+			mLLTriangles.push_back( mTriangles[i].X() );
+			mLLTriangles.push_back( mTriangles[i].Y() );
+			mLLTriangles.push_back( mTriangles[i].Z() );
+		}
+	}
+
+}
+
+void DecompHull::toLLHull( LLCDHull *aHull )
+{
+	computeLLVertices();
+
+	aHull->mVertexBase = &mLLVertices[0];
+	aHull->mVertexStrideBytes = sizeof( float ) * 3;
+	aHull->mNumVertices = mVertices.size();
+}
+
+void DecompHull::toLLMesh( LLCDMeshData *aMesh )
+{
+	computeLLVertices();
+	computeLLTriangles();
+
+	aMesh->mIndexType = LLCDMeshData::INT_32;
+	aMesh->mVertexBase = &mLLVertices[0];
+	aMesh->mNumVertices = mVertices.size();
+	aMesh->mVertexStrideBytes = sizeof( float ) * 3;
+
+	aMesh->mIndexBase = &mLLTriangles[0];
+	aMesh->mIndexStrideBytes = sizeof( hacdUINT32 ) * 3;
+	aMesh->mNumTriangles = mTriangles.size();
+}
+
+void DecompData::clear()
+{
+	mHulls.clear();
+}
+
+HACDDecoder::HACDDecoder()
+{
+	mStages.resize( NUM_STAGES );
+	mCallback = 0;
+}
+
+void HACDDecoder::clear()
+{
+	mVertices.clear();
+	mTriangles.clear();
+
+	for ( size_t i = 0;  i < mStages.size(); ++i )
+		mStages[i].clear();
+
+	mSingleHull.clear();
+
+	mCallback = 0;
+}
+
+
+
+

indra/libndhacd/nd_hacdStructs.h

@@ -0,0 +1,77 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ND_HACD_DECOMPSTRUCTS_H
+#define ND_HACD_DECOMPSTRUCTS_H
+
+#include "nd_hacdDefines.h"
+#include "hacdHACD.h"
+#include "LLConvexDecomposition.h"
+#include <vector>
+
+struct LLCDHull;
+struct LLCDMeshData;
+
+struct DecompHull
+{
+	std::vector< tVecDbl > mVertices;
+	std::vector< tVecLong > mTriangles;
+
+	std::vector< float > mLLVertices;
+	std::vector< hacdUINT32 > mLLTriangles;
+
+	void clear();
+
+	void computeLLVertices();
+
+	void computeLLTriangles();
+
+	void toLLHull( LLCDHull *aHull );
+	void toLLMesh( LLCDMeshData *aMesh );
+};
+
+struct DecompData
+{
+	std::vector< DecompHull > mHulls;
+
+	void clear();
+};
+
+struct HACDDecoder: public HACD::ICallback
+{
+	std::vector< tVecDbl > mVertices;
+	std::vector< tVecLong > mTriangles;
+
+	std::vector< DecompData > mStages;
+	DecompHull mSingleHull;
+
+	llcdCallbackFunc mCallback;
+
+	HACDDecoder();
+	void clear();
+
+	virtual void operator()( char const *aMsg, double aProgress, double aConcavity, size_t aVertices)
+	{
+		if( mCallback )
+			(*mCallback)(aMsg, static_cast<int>(aProgress), aVertices );
+	}
+
+};
+
+
+#endif

indra/libndhacd/nd_hacdUtils.cpp

@@ -0,0 +1,183 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "nd_hacdUtils.h"
+
+tHACD* init( int nConcavity, int nClusters, int nMaxVerticesPerHull, double dMaxConnectDist, HACDDecoder *aData )
+{
+	tHACD *pDec = HACD::CreateHACD(0);
+	pDec->SetPoints( &aData->mVertices[0] );
+	pDec->SetNPoints( aData->mVertices.size() );
+
+	if ( aData->mTriangles.size() )
+	{
+		pDec->SetTriangles( &aData->mTriangles[0] );
+		pDec->SetNTriangles( aData->mTriangles.size() );
+	}
+
+	pDec->SetCompacityWeight( 0.1f );
+	pDec->SetVolumeWeight( 0 );
+	pDec->SetNClusters( nClusters );
+	pDec->SetAddExtraDistPoints( true );
+	pDec->SetAddFacesPoints( true );
+	pDec->SetNVerticesPerCH( nMaxVerticesPerHull );
+	pDec->SetConcavity( nConcavity );
+	pDec->SetConnectDist( dMaxConnectDist );
+
+	pDec->SetCallBack( aData );
+
+	return pDec;
+}
+
+DecompData decompose( tHACD *aHACD )
+{
+	aHACD->Compute();
+
+	DecompData oRet;
+
+	int nClusters = aHACD->GetNClusters();
+
+	for ( int i = 0; i < nClusters; ++i )
+	{
+		int nVertices = aHACD->GetNPointsCH( i );
+		int nTriangles = aHACD->GetNTrianglesCH( i );
+		DecompHull oHull;
+
+		oHull.mVertices.resize( nVertices );
+		oHull.mTriangles.resize( nTriangles );
+		aHACD->GetCH( i, &oHull.mVertices[0], &oHull.mTriangles[0] );
+
+		oRet.mHulls.push_back( oHull );
+	}
+
+	return oRet;
+}
+
+tVecLong fromI16( void const *& pPtr, int aStride )
+{
+	hacdUINT16 const *pVal = reinterpret_cast< hacdUINT16 const * >( pPtr );
+	tVecLong oRet( pVal[0], pVal[1], pVal[2] );
+	pVal += aStride / 2;
+	pPtr = pVal;
+	return oRet;
+}
+
+tVecLong fromI32( void const *& pPtr, int aStride )
+{
+	hacdUINT32 const *pVal = reinterpret_cast< hacdUINT32 const * >( pPtr );
+	tVecLong oRet( pVal[0], pVal[1], pVal[2] );
+	pVal += aStride / 4;
+	pPtr = pVal;
+	return oRet;
+}
+
+LLCDResult setMeshData( const LLCDMeshData* data, bool vertex_based, HACDDecoder *aDec )
+{
+	if ( !data || !data->mVertexBase || ( data->mNumVertices < 3 ) || ( data->mVertexStrideBytes != 12 && data->mVertexStrideBytes != 16 ) )
+		return LLCD_INVALID_MESH_DATA;
+
+	if ( !vertex_based && ( ( data->mNumTriangles < 1 ) || ! data->mIndexBase ) )
+		return LLCD_INVALID_MESH_DATA;
+
+	aDec->clear();
+	int nCount = data->mNumVertices;
+	float const* pVertex = data->mVertexBase;
+	int nStride = data->mVertexStrideBytes / sizeof( float );
+
+	for ( int i = 0; i < nCount; ++i )
+	{
+		tVecDbl oPt( pVertex[0], pVertex[1], pVertex[2] );
+		aDec->mVertices.push_back( oPt );
+		pVertex += nStride;
+	}
+
+	if ( !vertex_based )
+	{
+		fFromIXX pFunc = 0;
+		nCount = data->mNumTriangles;
+		nStride = data->mIndexStrideBytes;
+		void const *pData = data->mIndexBase;
+
+		if ( data->mIndexType == LLCDMeshData::INT_16 )
+			pFunc = fromI16;
+		else
+			pFunc = fromI32;
+
+		for ( int i = 0; i < nCount; ++i )
+		{
+			tVecLong oVal( ( *pFunc )( pData, nStride ) );
+			aDec->mTriangles.push_back( oVal );
+		}
+	}
+
+	return LLCD_OK;
+}
+
+LLCDResult convertHullToMesh( const LLCDHull* aHull, std::vector< float > &aVerticesOut, std::vector< int > &aTrianglesOut )
+{
+	if( !aHull || !aHull->mVertexBase )
+		return LLCD_NULL_PTR;
+	if( aHull->mVertexStrideBytes < 3*sizeof(float) || aHull->mNumVertices < 3 )
+		return LLCD_INVALID_HULL_DATA;
+
+	HACD::ICHull oHull;
+
+	int nCount = aHull->mNumVertices;
+	float const *pVertex = aHull->mVertexBase;
+	int nStride = aHull->mVertexStrideBytes / sizeof( float );
+
+	std::vector< tVecDbl > vcPoints;
+
+	for ( int i = 0; i < nCount; ++i )
+	{
+		vcPoints.push_back( tVecDbl( pVertex[0], pVertex[1], pVertex[2] ) ); 
+		pVertex += nStride;
+	}
+
+	oHull.AddPoints( &vcPoints[0], vcPoints.size() );
+
+	HACD::ICHullError eErr = oHull.Process( MAX_VERTICES_PER_HULL );
+	if( HACD::ICHullErrorOK != eErr )
+		return LLCD_INVALID_HULL_DATA;
+
+	HACD::TMMesh &oMesh = oHull.GetMesh();
+
+	std::vector< tVecDbl > vPoints;
+	std::vector< tVecLong > vTriangles;
+
+	vPoints.resize( oMesh.GetNVertices() );
+	vTriangles.resize( oMesh.GetNTriangles() );
+
+	oMesh.GetIFS( &vPoints[0], &vTriangles[0] );
+
+	for( size_t i = 0; i < vPoints.size(); ++i )
+	{
+		aVerticesOut.push_back( static_cast<float>( vPoints[i].X() ) );
+		aVerticesOut.push_back( static_cast<float>( vPoints[i].Y() ) );
+		aVerticesOut.push_back( static_cast<float>( vPoints[i].Z() ) );
+	}
+
+	for( size_t i = 0; i < vTriangles.size(); ++i )
+	{
+		aTrianglesOut.push_back( vTriangles[i].X() );
+		aTrianglesOut.push_back( vTriangles[i].Y() );
+		aTrianglesOut.push_back( vTriangles[i].Z() );
+	}
+
+	return LLCD_OK;
+}

indra/libndhacd/nd_hacdUtils.h

@@ -0,0 +1,34 @@
+/**
+ * copyright 2011 sl.nicky.ml@googlemail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef ND_HACD_UTILS_H
+#define ND_HACD_UTILS_H
+
+#include "nd_hacdStructs.h"
+#include "LLConvexDecomposition.h"
+
+tHACD* init( int nConcavity, int nClusters, int nMaxVerticesPerHull, double dMaxConnectDist, HACDDecoder *aData );
+DecompData decompose( tHACD *aHACD );
+
+tVecLong fromI16( void *& pPtr, int aStride );
+tVecLong fromI32( void *& pPtr, int aStride );
+
+LLCDResult setMeshData( const LLCDMeshData* data, bool vertex_based, HACDDecoder *aDec );
+LLCDResult convertHullToMesh( const LLCDHull* aHull, std::vector< float > &aVerticesOut, std::vector< int > &aTrianglesOut );
+
+#endif

indra/libndhacd/windowsincludes.h

@@ -0,0 +1,59 @@
+/** 
+ * @file windowsincludes.h
+ * @brief includes that need to be involved in the windows version of llconvexdecompositionstub
+ *
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+
+// stdafx.h : include file for standard system include files,
+// or project specific include files that are used frequently, but
+// are changed infrequently
+//
+
+#pragma once
+
+// Modify the following defines if you have to target a platform prior to the ones specified below.
+// Refer to MSDN for the latest info on corresponding values for different platforms.
+#ifndef WINVER				// Allow use of features specific to Windows XP or later.
+#define WINVER 0x0501		// Change this to the appropriate value to target other versions of Windows.
+#endif
+
+#ifndef _WIN32_WINNT		// Allow use of features specific to Windows XP or later.                   
+#define _WIN32_WINNT 0x0501	// Change this to the appropriate value to target other versions of Windows.
+#endif						
+
+#ifndef _WIN32_WINDOWS		// Allow use of features specific to Windows 98 or later.
+#define _WIN32_WINDOWS 0x0410 // Change this to the appropriate value to target Windows Me or later.
+#endif
+
+#ifndef _WIN32_IE			// Allow use of features specific to IE 6.0 or later.
+#define _WIN32_IE 0x0600	// Change this to the appropriate value to target other versions of IE.
+#endif
+
+#define WIN32_LEAN_AND_MEAN		// Exclude rarely-used stuff from Windows headers
+// Windows Header Files:
+#include <windows.h>
+
+
+
+// TODO: reference additional headers your program requires here

indra/libpathing/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 2.6.4)
+
+project(ndPathingLib CXX C)
+
+if( MSVC )
+   add_definitions(-D_HAS_ITERATOR_DEBUGGING=0 -D_SECURE_SCL=0 -D_CRT_SECURE_NO_WARNINGS=1)
+endif( MSVC )
+
+file (GLOB SOURCE_FILES *.cpp )
+file (GLOB INCLUDE_FILES *.h )
+
+add_library(nd_Pathing STATIC ${SOURCE_FILES} ${INCLUDE_FILES} )
+

indra/libpathing/llpathinglib.cpp

@@ -0,0 +1,89 @@
+#include "llpathinglib.h"
+
+void LLPathingLib::initSystem()
+{
+}
+
+void LLPathingLib::quitSystem()
+{
+}
+
+LLPathingLib* LLPathingLib::getInstance()
+{
+	static LLPathingLib sObj;
+	return &sObj;
+}
+
+bool LLPathingLib::isFunctional()
+{
+	return false;
+}
+
+void LLPathingLib::extractNavMeshSrcFromLLSD( std::vector< unsigned char > const &aMeshData, int aNavigation )
+{
+}
+
+LLPathingLib::LLPLResult LLPathingLib::generatePath( PathingPacket const& )
+{
+	return LLPL_NO_PATH;
+}
+
+void LLPathingLib::cleanupResidual()
+{
+}
+
+void LLPathingLib::stitchNavMeshes( )
+{
+}
+
+void LLPathingLib::renderNavMesh( void )
+{
+}
+
+void LLPathingLib::renderNavMeshShapesVBO( unsigned int aShapeTypeBitmask )
+{
+}
+
+void LLPathingLib::renderPath()
+{
+}
+
+void LLPathingLib::cleanupVBOManager()
+{
+}
+
+void LLPathingLib::setNavMeshColors( NavMeshColors const &aColors )
+{
+}
+
+void LLPathingLib::setNavMeshMaterialType( LLPLCharacterType aType )
+{
+}
+
+void LLPathingLib::renderNavMeshEdges()
+{
+}
+
+void LLPathingLib::renderPathBookend( LLRender&, LLPLRenderType )
+{
+}
+
+void LLPathingLib::renderSimpleShapes( LLRender&, float )
+{
+}
+
+void LLPathingLib::createPhysicsCapsuleRep( float, float, bool, LLUUID const& )
+{
+}
+
+void LLPathingLib::cleanupPhysicsCapsuleRepResiduals()
+{
+}
+
+void LLPathingLib::processNavMeshData()
+{
+}
+
+void LLPathingLib::renderSimpleShapeCapsuleID( LLRender&, LLUUID const&, LLVector3 const&, LLQuaternion const& )
+{
+}

indra/libpathing/llpathinglib.h

@@ -0,0 +1,181 @@
+#ifndef LL_PATHINGLIB_H
+#define LL_PATHINGLIB_H
+
+#include <vector>
+
+#ifndef LL_V3MATH_H
+class LLVector3
+{
+public:
+	float mV[3];
+};
+#endif
+
+#ifndef LL_V4COLORU_H
+class LLColor4U
+{
+public:
+	unsigned char mV[4];
+};
+#endif
+
+#ifndef LL_LLUUID_H
+class LLUUID
+{
+public:
+	unsigned char mData[16];
+};
+#endif
+
+#ifndef LLQUATERNION_H
+class LLQuaternion
+{
+public:
+	double mQ[4];
+};
+#endif
+
+class LLRender;
+
+class LLPathingLib
+{
+public:
+	enum LLPLResult
+	{
+		LLPL_NO_PATH,
+		LLPL_PATH_GENERATED_OK,
+	};
+
+	enum LLPLCharacterType
+	{
+		LLPL_CHARACTER_TYPE_NONE,
+		LLPL_CHARACTER_TYPE_A,
+		LLPL_CHARACTER_TYPE_B,
+		LLPL_CHARACTER_TYPE_C,
+		LLPL_CHARACTER_TYPE_D,
+	};
+
+	enum LLShapeType
+	{
+		LLST_WalkableObjects = 1,
+		LLST_ObstacleObjects = 2,
+		LLST_MaterialPhantoms = 3,
+		LLST_ExclusionPhantoms = 4,
+	};
+
+	enum LLPLRenderType
+	{
+		LLPL_START,
+		LLPL_END,
+	};
+
+	struct Vector
+	{
+		double mX;
+		double mY;
+		double mZ;
+		
+		Vector& operator=( LLVector3 const &aRHS )
+		{
+			mX = aRHS.mV[0];
+			mY = aRHS.mV[1];
+			mZ = aRHS.mV[2];
+
+			return *this;
+		}
+		
+		operator LLVector3() const
+		{
+			LLVector3 ret;
+			ret.mV[0] = mX;
+			ret.mV[1] = mY;
+			ret.mV[2] = mZ;
+			return ret;
+		}
+	};
+
+	struct PathingPacket
+	{
+		Vector mStartPointA;
+		Vector mEndPointA;
+
+		Vector mStartPointB;
+		Vector mEndPointB;
+
+		bool mHasPointA;
+		bool mHasPointB;
+
+		double mCharacterWidth;
+		LLPLCharacterType mCharacterType;
+	};
+
+	struct NavMeshColor
+	{
+		unsigned char mR;
+		unsigned char mG;
+		unsigned char mB;
+		unsigned char mAlpha;
+
+		NavMeshColor& operator=( LLColor4U const &aRHS )
+		{
+			mR = aRHS.mV[0];
+			mG = aRHS.mV[1];
+			mB = aRHS.mV[2];
+			mAlpha = aRHS.mV[3];
+
+			return *this;
+		}
+		
+	};
+
+	struct NavMeshColors
+	{
+		NavMeshColor mWalkable;
+		NavMeshColor mObstacle;
+		NavMeshColor mMaterial;
+		NavMeshColor mExclusion;
+		NavMeshColor mConnectedEdge;
+		NavMeshColor mBoundaryEdge;
+		NavMeshColor mHeatColorBase;
+		NavMeshColor mHeatColorMax;
+		NavMeshColor mFaceColor;
+		NavMeshColor mStarValid;
+		NavMeshColor mStarInvalid;
+		NavMeshColor mTestPath;
+		NavMeshColor mWaterColor;
+	};
+
+	static void initSystem();
+	static void quitSystem();
+	static LLPathingLib* getInstance();
+
+	bool isFunctional();
+
+	void extractNavMeshSrcFromLLSD( std::vector< unsigned char> const &aMeshData, int aNavigation );
+
+	LLPLResult generatePath( PathingPacket const& );
+	void cleanupResidual();
+
+	void stitchNavMeshes( );
+
+	void renderNavMesh( void );
+	void renderNavMeshShapesVBO( unsigned int aShapeTypeBitmask );
+	void renderPath();
+	void cleanupVBOManager();
+
+	void renderNavMeshEdges();
+	void renderPathBookend( LLRender&, LLPLRenderType );
+
+	void setNavMeshColors( NavMeshColors const& );
+	void setNavMeshMaterialType( LLPLCharacterType );
+
+	void renderSimpleShapes( LLRender&, float );
+
+	void createPhysicsCapsuleRep( float, float, bool, LLUUID const& );
+	void cleanupPhysicsCapsuleRepResiduals();
+
+	void processNavMeshData();
+	void renderSimpleShapeCapsuleID( LLRender&, LLUUID const&, LLVector3 const&, LLQuaternion const& );
+};
+
+#endif

indra/libpathing/llphysicsextensions.cpp

@@ -0,0 +1,10 @@
+#include "llphysicsextensions.h"
+
+void LLPhysicsExtensions::quitSystem()
+{
+}
+
+bool LLPhysicsExtensions::isFunctional()
+{
+	return false;
+}

indra/libpathing/llphysicsextensions.h

@@ -0,0 +1,12 @@
+#ifndef LLPYHSICS_EXTENSIONS_H
+#define LLPYHSICS_EXTENSIONS_H
+
+class LLPhysicsExtensions
+{
+public:
+	static void quitSystem();
+
+	bool isFunctional();
+};
+
+#endif

indra/llprimitive/llmodel.cpp

@@ -28,7 +28,7 @@
 
 #include "llmodel.h"
 #include "llmemory.h"
-#include "llconvexdecomposition.h"
+#include "LLConvexDecomposition.h"
 #include "llsdserialize.h"
 #include "llvector4a.h"
 #if LL_MSVC

indra/newview/llmeshrepository.h

@@ -35,7 +35,7 @@
 
 #define LLCONVEXDECOMPINTER_STATIC 1
 
-#include "llconvexdecomposition.h"
+#include "LLConvexDecomposition.h"
 #include "lluploadfloaterobservers.h"
 
 class LLVOVolume;

indra/newview/viewer_manifest.py

@@ -849,10 +849,13 @@ class Linux_x86_64Manifest(LinuxManifest):
         if (not self.standalone()) and self.prefix("../../libraries/x86_64-linux/lib/release", dst="lib64"):
             self.path("libapr-1.so*")
             self.path("libaprutil-1.so*")
+            self.path("libcollada14dom.so.2.2", "libcollada14dom.so")
             self.path("libdb-*.so*")
             self.path("libcrypto.so.*")
             self.path("libexpat.so*")
+            self.path("libglod.so")
             self.path("libhunspell-1.3.so*")
+            self.path("libminizip.so.1.2.3", "libminizip.so");
             self.path("libssl.so*")
             self.path("libuuid.so*")
             self.path("libSDL-1.2.so*")

install.xml

@@ -50,6 +50,13 @@
             <key>url</key>
             <uri>https://bitbucket.org/SingularityViewer/libraries/downloads/glod-1.0pre4-linux-20110611.tar.bz2</uri>
           </map>
+          <key>linux64</key>
+          <map>
+            <key>md5sum</key>
+            <string>9552782ad333c819c91d31087750db64</string>
+            <key>url</key>
+            <uri>https://bitbucket.org/Siana/singularityviewer/downloads/glod-1.0pre4-linux-x86_64-20120609.tar.bz2</uri>
+          </map>
           <key>windows</key>
           <map>
             <key>md5sum</key>
@@ -225,6 +232,13 @@
             <key>url</key>
             <uri>https://bitbucket.org/SingularityViewer/libraries/downloads/colladadom-2.2-linux-20110621.tar.bz2</uri>
           </map>
+          <key>linux64</key>
+          <map>
+            <key>md5sum</key>
+            <string>bab6e7fea2411dd375d76bb4ce9118a5</string>
+            <key>url</key>
+            <uri>https://bitbucket.org/Siana/singularityviewer/downloads/colladadom-2.2-linux-x86_64-20120719.tar.bz2</uri>
+          </map>
           <key>windows</key>
           <map>
             <key>md5sum</key>
@@ -932,37 +946,6 @@
           </map>
         </map>
       </map>
-      <key>ndPhysicsStub</key>
-      <map>
-        <key>description</key>
-        <string>llphysicsextension_stub modified with hacd by NickyD</string>
-        <key>license</key>
-        <string>lgpl</string>
-        <key>packages</key>
-        <map>
-          <key>darwin</key>
-          <map>
-            <key>md5sum</key>
-            <string>0b51a73814b755bc001e13ca2e6202eb</string>
-            <key>url</key>
-            <uri>https://bitbucket.org/LightDrake/singularitylibraries/downloads/ndPhysicsStub-0.1.1-Darwin_ao10.5-singu.tar.bz2</uri>
-          </map>
-          <key>linux</key>
-          <map>
-            <key>md5sum</key>
-            <string>017e37250d49686a11db0b88d6633404</string>
-            <key>url</key>
-            <uri>https://bitbucket.org/LightDrake/singularitylibraries/downloads/ndPhysicsStub-r65-linux32-singu.tar.bz2</uri>
-          </map>
-          <key>windows</key>
-          <map>
-            <key>md5sum</key>
-            <string>77ac92467e9c4e28cd7e9f9bc4f5a1c1</string>
-            <key>url</key>
-            <uri>https://bitbucket.org/LightDrake/singularitylibraries/downloads/ndPhysicsStub-r65-win32-singu.tar.bz2</uri>
-          </map>
-        </map>
-      </map>
       <key>ogg-vorbis</key>
       <map>
         <key>copyright</key>
@@ -1096,6 +1079,13 @@
             <key>url</key>
             <uri>https://bitbucket.org/SingularityViewer/libraries/downloads/pcre-7.6-linux-20110504.tar.bz2</uri>
           </map>
+          <key>linux64</key>
+          <map>
+            <key>md5sum</key>
+            <string>be0a9c92b5ab7d6761574b61685d6300</string>
+            <key>url</key>
+            <uri>https://bitbucket.org/Siana/singularityviewer/downloads/pcre-7.6-linux-x86_64-20120715.tar.bz2</uri>
+          </map>
         </map>
       </map>
       <key>pulseaudio</key>