296 lines
7.0 KiB
C++
296 lines
7.0 KiB
C++
/**
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* @file llvoclouds.cpp
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* @brief Implementation of LLVOClouds class which is a derivation fo LLViewerObject
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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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#include "llviewerprecompiledheaders.h"
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#include "llvoclouds.h"
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#include "lldrawpoolalpha.h"
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#include "llviewercontrol.h"
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#include "llagent.h" // to get camera position
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#include "lldrawable.h"
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#include "llface.h"
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#include "llprimitive.h"
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#include "llsky.h"
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#include "llviewercamera.h"
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#include "llviewerimagelist.h"
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#include "llviewerobjectlist.h"
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#include "llviewerregion.h"
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#include "llvosky.h"
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#include "llworld.h"
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#include "pipeline.h"
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#include "llspatialpartition.h"
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LLUUID gCloudTextureID = IMG_CLOUD_POOF;
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LLVOClouds::LLVOClouds(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
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: LLAlphaObject(id, LL_VO_CLOUDS, regionp)
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{
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mCloudGroupp = NULL;
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mbCanSelect = FALSE;
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setNumTEs(1);
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LLViewerImage* image = gImageList.getImage(gCloudTextureID);
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image->setBoostLevel(LLViewerImageBoostLevel::BOOST_CLOUDS);
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setTEImage(0, image);
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}
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LLVOClouds::~LLVOClouds()
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{
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}
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BOOL LLVOClouds::isActive() const
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{
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return TRUE;
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}
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BOOL LLVOClouds::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
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{
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if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLASSIC_CLOUDS)))
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{
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return TRUE;
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}
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// Set dirty flag (so renderer will rebuild primitive)
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if (mDrawable)
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{
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gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
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}
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return TRUE;
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}
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void LLVOClouds::setPixelAreaAndAngle(LLAgent &agent)
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{
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mAppAngle = 50;
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mPixelArea = 1500*100;
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}
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void LLVOClouds::updateTextures()
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{
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getTEImage(0)->addTextureStats(mPixelArea);
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}
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LLDrawable* LLVOClouds::createDrawable(LLPipeline *pipeline)
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{
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pipeline->allocDrawable(this);
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mDrawable->setLit(FALSE);
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mDrawable->setRenderType(LLPipeline::RENDER_TYPE_CLASSIC_CLOUDS);
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return mDrawable;
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}
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BOOL LLVOClouds::updateGeometry(LLDrawable *drawable)
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{
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LLFastTimer ftm(LLFastTimer::FTM_UPDATE_CLOUDS);
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if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLASSIC_CLOUDS)))
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{
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return TRUE;
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}
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if (drawable->isVisible())
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{
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dirtySpatialGroup(TRUE);
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}
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LLFace *facep;
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S32 num_faces = mCloudGroupp->getNumPuffs();
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if (num_faces > drawable->getNumFaces())
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{
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drawable->setNumFacesFast(num_faces, NULL, getTEImage(0));
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}
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mDepth = (getPositionAgent()-LLViewerCamera::getInstance()->getOrigin())*LLViewerCamera::getInstance()->getAtAxis();
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S32 face_indx = 0;
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for ( ; face_indx < num_faces; face_indx++)
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{
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facep = drawable->getFace(face_indx);
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if (!facep)
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{
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llwarns << "No facep for index " << face_indx << llendl;
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continue;
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}
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facep->setSize(4, 6);
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facep->setTEOffset(face_indx);
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facep->setTexture(getTEImage(0));
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const LLCloudPuff &puff = mCloudGroupp->getPuff(face_indx);
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const LLVector3 puff_pos_agent = gAgent.getPosAgentFromGlobal(puff.getPositionGlobal());
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facep->mCenterLocal = puff_pos_agent;
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/// Update cloud color based on sun color.
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LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
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facep->setFaceColor(float_color);
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}
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for ( ; face_indx < drawable->getNumFaces(); face_indx++)
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{
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facep = drawable->getFace(face_indx);
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if (!facep)
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{
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llwarns << "No facep for index " << face_indx << llendl;
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continue;
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}
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facep->setTEOffset(face_indx);
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facep->setSize(0,0);
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}
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drawable->movePartition();
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return TRUE;
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}
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F32 LLVOClouds::getPartSize(S32 idx)
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{
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return (CLOUD_PUFF_HEIGHT+CLOUD_PUFF_WIDTH)*0.5f;
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}
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void LLVOClouds::getGeometry(S32 te,
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LLStrider<LLVector3>& 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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{
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if (te >= mCloudGroupp->getNumPuffs())
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{
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return;
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}
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LLDrawable* drawable = mDrawable;
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LLFace *facep = drawable->getFace(te);
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if (!facep->hasGeometry())
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{
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return;
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}
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LLVector3 normal(0.f,0.f,-1.f);
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const LLCloudPuff &puff = mCloudGroupp->getPuff(te);
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S32 index_offset = facep->getGeomIndex();
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LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
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LLColor4U color;
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color.setVec(float_color);
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facep->setFaceColor(float_color);
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LLVector3 up;
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LLVector3 right;
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LLVector3 at;
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const LLVector3& puff_pos_agent = facep->mCenterLocal;
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LLVector2 uvs[4];
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uvs[0].setVec(0.f, 1.f);
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uvs[1].setVec(0.f, 0.f);
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uvs[2].setVec(1.f, 1.f);
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uvs[3].setVec(1.f, 0.f);
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LLVector3 vtx[4];
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at = LLViewerCamera::getInstance()->getAtAxis();
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right = at % LLVector3(0.f, 0.f, 1.f);
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right.normVec();
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up = right % at;
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up.normVec();
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right *= 0.5f*CLOUD_PUFF_WIDTH;
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up *= 0.5f*CLOUD_PUFF_HEIGHT;;
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*colorsp++ = color;
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*colorsp++ = color;
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*colorsp++ = color;
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*colorsp++ = color;
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vtx[0] = puff_pos_agent - right + up;
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vtx[1] = puff_pos_agent - right - up;
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vtx[2] = puff_pos_agent + right + up;
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vtx[3] = puff_pos_agent + right - up;
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*verticesp++ = vtx[0];
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*verticesp++ = vtx[1];
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*verticesp++ = vtx[2];
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*verticesp++ = vtx[3];
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*texcoordsp++ = uvs[0];
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*texcoordsp++ = uvs[1];
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*texcoordsp++ = uvs[2];
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*texcoordsp++ = uvs[3];
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*normalsp++ = normal;
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*normalsp++ = normal;
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*normalsp++ = normal;
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*normalsp++ = normal;
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*indicesp++ = index_offset + 0;
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*indicesp++ = index_offset + 1;
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*indicesp++ = index_offset + 2;
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*indicesp++ = index_offset + 1;
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*indicesp++ = index_offset + 3;
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*indicesp++ = index_offset + 2;
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}
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U32 LLVOClouds::getPartitionType() const
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{
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return LLViewerRegion::PARTITION_CLOUD;
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}
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// virtual
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void LLVOClouds::updateDrawable(BOOL force_damped)
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{
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// Force an immediate rebuild on any update
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if (mDrawable.notNull())
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{
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mDrawable->updateXform(TRUE);
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gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL, TRUE);
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}
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clearChanged(SHIFTED);
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}
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LLCloudPartition::LLCloudPartition()
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{
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mDrawableType = LLPipeline::RENDER_TYPE_CLASSIC_CLOUDS;
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mPartitionType = LLViewerRegion::PARTITION_CLOUD;
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}
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