134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
/**
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* @file llvograss.h
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* @brief Description of LLVOGrass class
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#ifndef LL_LLVOGRASS_H
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#define LL_LLVOGRASS_H
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#include "llviewerobject.h"
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#include "lldarray.h"
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#include <map>
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class LLSurfacePatch;
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class LLViewerTexture;
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class LLVOGrass : public LLAlphaObject
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{
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public:
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LLVOGrass(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
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// Initialize data that's only inited once per class.
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static void initClass();
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static void cleanupClass();
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virtual U32 getPartitionType() const;
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/*virtual*/ U32 processUpdateMessage(LLMessageSystem *mesgsys,
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void **user_data,
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U32 block_num,
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const EObjectUpdateType update_type,
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LLDataPacker *dp);
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static void import(LLFILE *file, LLMessageSystem *mesgsys, const LLVector3 &pos);
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/*virtual*/ void exportFile(LLFILE *file, const LLVector3 &position);
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void updateDrawable(BOOL force_damped);
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/*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
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/*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
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/*virtual*/ void getGeometry(S32 idx,
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LLStrider<LLVector4a>& verticesp,
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LLStrider<LLVector3>& normalsp,
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LLStrider<LLVector2>& texcoordsp,
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LLStrider<LLColor4U>& colorsp,
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LLStrider<U16>& indicesp);
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void updateFaceSize(S32 idx) { }
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/*virtual*/ void updateTextures();
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/*virtual*/ BOOL updateLOD();
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/*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
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void plantBlades();
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/*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
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/*virtual*/ void idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
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/*virtual*/ BOOL lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
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S32 face = -1, // which face to check, -1 = ALL_SIDES
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BOOL pick_transparent = FALSE,
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S32* face_hit = NULL, // which face was hit
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LLVector3* intersection = NULL, // return the intersection point
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LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point
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LLVector3* normal = NULL, // return the surface normal at the intersection point
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LLVector3* bi_normal = NULL // return the surface bi-normal at the intersection point
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);
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static S32 sMaxGrassSpecies;
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struct GrassSpeciesData
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{
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LLUUID mTextureID;
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F32 mBladeSizeX;
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F32 mBladeSizeY;
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};
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typedef std::map<U32, GrassSpeciesData*> SpeciesMap;
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U8 mSpecies; // Species of grass
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F32 mBladeSizeX;
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F32 mBladeSizeY;
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LLSurfacePatch *mPatch; // Stores the land patch where the grass is centered
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U64 mLastPatchUpdateTime;
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LLVector3 mGrassBend; // Accumulated wind (used for blowing trees)
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LLVector3 mGrassVel;
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LLVector3 mWind;
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F32 mBladeWindAngle;
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F32 mBWAOverlap;
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typedef std::map<std::string, S32> SpeciesNames;
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static SpeciesNames sSpeciesNames;
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protected:
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~LLVOGrass();
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private:
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void updateSpecies();
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F32 mLastHeight; // For cheap update hack
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S32 mNumBlades;
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static SpeciesMap sSpeciesTable;
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};
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#endif // LL_VO_GRASS_
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