Imported existing code

indra/newview/llvoclouds.cpp

@@ -0,0 +1,292 @@
+/** 
+ * @file llvoclouds.cpp
+ * @brief Implementation of LLVOClouds class which is a derivation fo LLViewerObject
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llvoclouds.h"
+
+#include "lldrawpoolalpha.h"
+
+#include "llviewercontrol.h"
+
+#include "llagent.h"		// to get camera position
+#include "lldrawable.h"
+#include "llface.h"
+#include "llprimitive.h"
+#include "llsky.h"
+#include "llviewercamera.h"
+#include "llviewerimagelist.h"
+#include "llviewerobjectlist.h"
+#include "llviewerregion.h"
+#include "llvosky.h"
+#include "llworld.h"
+#include "pipeline.h"
+#include "llspatialpartition.h"
+
+LLUUID gCloudTextureID = IMG_CLOUD_POOF;
+
+
+LLVOClouds::LLVOClouds(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
+:	LLAlphaObject(id, LL_VO_CLOUDS, regionp)
+{
+	mCloudGroupp = NULL;
+	mbCanSelect = FALSE;
+	setNumTEs(1);
+	LLViewerImage* image = gImageList.getImage(gCloudTextureID);
+	image->setBoostLevel(LLViewerImageBoostLevel::BOOST_CLOUDS);
+	setTEImage(0, image);
+}
+
+
+LLVOClouds::~LLVOClouds()
+{
+}
+
+
+BOOL LLVOClouds::isActive() const
+{
+	return TRUE;
+}
+
+
+BOOL LLVOClouds::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
+{
+	if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS)))
+	{
+		return TRUE;
+	}
+	
+	// Set dirty flag (so renderer will rebuild primitive)
+	if (mDrawable)
+	{
+		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
+	}
+
+	return TRUE;
+}
+
+
+void LLVOClouds::setPixelAreaAndAngle(LLAgent &agent)
+{
+	mAppAngle = 50;
+	mPixelArea = 1500*100;
+}
+
+void LLVOClouds::updateTextures()
+{
+	getTEImage(0)->addTextureStats(mPixelArea);
+}
+
+LLDrawable* LLVOClouds::createDrawable(LLPipeline *pipeline)
+{
+	pipeline->allocDrawable(this);
+	mDrawable->setLit(FALSE);
+	mDrawable->setRenderType(LLPipeline::RENDER_TYPE_CLOUDS);
+
+	return mDrawable;
+}
+
+BOOL LLVOClouds::updateGeometry(LLDrawable *drawable)
+{
+	LLFastTimer ftm(LLFastTimer::FTM_UPDATE_CLOUDS);
+	if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS)))
+	{
+		return TRUE;
+	}
+	
+	dirtySpatialGroup();
+
+	LLFace *facep;
+	
+	S32 num_faces = mCloudGroupp->getNumPuffs();
+
+	if (num_faces > drawable->getNumFaces())
+	{
+		drawable->setNumFacesFast(num_faces, NULL, getTEImage(0));
+	}
+
+	mDepth = (getPositionAgent()-LLViewerCamera::getInstance()->getOrigin())*LLViewerCamera::getInstance()->getAtAxis();
+
+	S32 face_indx = 0;
+	for ( ;	face_indx < num_faces; face_indx++)
+	{
+		facep = drawable->getFace(face_indx);
+		if (!facep)
+		{
+			llwarns << "No facep for index " << face_indx << llendl;
+			continue;
+		}
+
+		facep->setSize(4, 6);
+		
+		facep->setTEOffset(face_indx);
+		facep->setTexture(getTEImage(0));
+		const LLCloudPuff &puff = mCloudGroupp->getPuff(face_indx);
+		const LLVector3 puff_pos_agent = gAgent.getPosAgentFromGlobal(puff.getPositionGlobal());
+		facep->mCenterLocal = puff_pos_agent;
+		/// Update cloud color based on sun color.
+		LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
+		facep->setFaceColor(float_color);
+	}
+	for ( ; face_indx < drawable->getNumFaces(); face_indx++)
+	{
+		facep = drawable->getFace(face_indx);
+		if (!facep)
+		{
+			llwarns << "No facep for index " << face_indx << llendl;
+			continue;
+		}
+
+		facep->setTEOffset(face_indx);
+		facep->setSize(0,0);
+	}
+
+	drawable->movePartition();
+
+	return TRUE;
+}
+
+F32 LLVOClouds::getPartSize(S32 idx)
+{
+	return (CLOUD_PUFF_HEIGHT+CLOUD_PUFF_WIDTH)*0.5f;
+}
+
+void LLVOClouds::getGeometry(S32 te, 
+							LLStrider<LLVector3>& verticesp, 
+							LLStrider<LLVector3>& normalsp, 
+							LLStrider<LLVector2>& texcoordsp, 
+							LLStrider<LLColor4U>& colorsp, 
+							LLStrider<U16>& indicesp)
+{
+
+	if (te >= mCloudGroupp->getNumPuffs())
+	{
+		return;
+	}
+
+	LLDrawable* drawable = mDrawable;
+	LLFace *facep = drawable->getFace(te);
+
+	if (!facep->hasGeometry())
+	{
+		return;
+	}
+	
+	LLVector3 normal(0.f,0.f,-1.f);
+
+	const LLCloudPuff &puff = mCloudGroupp->getPuff(te);
+	S32 index_offset = facep->getGeomIndex();
+	LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
+	LLColor4U color;
+	color.setVec(float_color);
+	facep->setFaceColor(float_color);
+		
+	
+	LLVector3 up;
+	LLVector3 right;
+	LLVector3 at;
+
+	const LLVector3& puff_pos_agent = facep->mCenterLocal;
+	LLVector2 uvs[4];
+
+	uvs[0].setVec(0.f, 1.f);
+	uvs[1].setVec(0.f, 0.f);
+	uvs[2].setVec(1.f, 1.f);
+	uvs[3].setVec(1.f, 0.f);
+
+	LLVector3 vtx[4];
+
+	at = LLViewerCamera::getInstance()->getAtAxis();
+	right = at % LLVector3(0.f, 0.f, 1.f);
+	right.normVec();
+	up = right % at;
+	up.normVec();
+	right *= 0.5f*CLOUD_PUFF_WIDTH;
+	up *= 0.5f*CLOUD_PUFF_HEIGHT;;
+		
+	*colorsp++ = color;
+	*colorsp++ = color;
+	*colorsp++ = color;
+	*colorsp++ = color;
+
+	vtx[0] = puff_pos_agent - right + up;
+	vtx[1] = puff_pos_agent - right - up;
+	vtx[2] = puff_pos_agent + right + up;
+	vtx[3] = puff_pos_agent + right - up;
+
+	*verticesp++  = vtx[0];
+	*verticesp++  = vtx[1];
+	*verticesp++  = vtx[2];
+	*verticesp++  = vtx[3];
+
+	*texcoordsp++ = uvs[0];
+	*texcoordsp++ = uvs[1];
+	*texcoordsp++ = uvs[2];
+	*texcoordsp++ = uvs[3];
+
+	*normalsp++   = normal;
+	*normalsp++   = normal;
+	*normalsp++   = normal;
+	*normalsp++   = normal;
+
+	*indicesp++ = index_offset + 0;
+	*indicesp++ = index_offset + 1;
+	*indicesp++ = index_offset + 2;
+
+	*indicesp++ = index_offset + 1;
+	*indicesp++ = index_offset + 3;
+	*indicesp++ = index_offset + 2;
+}
+
+U32 LLVOClouds::getPartitionType() const
+{
+	return LLViewerRegion::PARTITION_CLOUD;
+}
+
+// virtual
+void LLVOClouds::updateDrawable(BOOL force_damped)
+{
+	// Force an immediate rebuild on any update
+	if (mDrawable.notNull())
+	{
+		mDrawable->updateXform(TRUE);
+		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL, TRUE);
+	}
+	clearChanged(SHIFTED);
+}
+
+LLCloudPartition::LLCloudPartition()
+{
+	mDrawableType = LLPipeline::RENDER_TYPE_CLOUDS;
+	mPartitionType = LLViewerRegion::PARTITION_CLOUD;
+}
+