298 lines
6.9 KiB
C++
298 lines
6.9 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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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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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 "llviewertexturelist.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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LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture(gCloudTextureID);
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image->setBoostLevel(LLViewerTexture::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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static LLFastTimer::DeclareTimer ftm("Idle Clouds");
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LLFastTimer t(ftm);
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if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_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_CLOUDS);
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return mDrawable;
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}
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static LLFastTimer::DeclareTimer FTM_UPDATE_CLOUDS("Update Clouds");
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BOOL LLVOClouds::updateGeometry(LLDrawable *drawable)
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{
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LLFastTimer ftm(FTM_UPDATE_CLOUDS);
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if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_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->mV[3] = 0.f;
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*verticesp++ = vtx[0];
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verticesp->mV[3] = 0.f;
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*verticesp++ = vtx[1];
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verticesp->mV[3] = 0.f;
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*verticesp++ = vtx[2];
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verticesp->mV[3] = 0.f;
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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_CLOUDS;
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mPartitionType = LLViewerRegion::PARTITION_CLOUD;
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}
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