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/**
* @file llvoclouds.cpp
* @brief Implementation of LLVOClouds class which is a derivation fo LLViewerObject
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "llviewerprecompiledheaders.h"
#include "llvoclouds.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 "viewer.h"
LLVOClouds::LLVOClouds(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
: LLViewerObject(id, LL_VO_CLOUDS, regionp)
{
mCloudGroupp = NULL;
mbCanSelect = FALSE;
setNumTEs(1);
LLViewerImage* image = gImageList.getImage(gCloudTextureID);
image->setBoostLevel(LLViewerImage::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(LLAgent &agent)
{
getTEImage(0)->addTextureStats(mPixelArea);
}
LLDrawable* LLVOClouds::createDrawable(LLPipeline *pipeline)
{
pipeline->allocDrawable(this);
mDrawable->setLit(FALSE);
mDrawable->setRenderType(LLPipeline::RENDER_TYPE_CLOUDS);
LLDrawPool *pool = gPipeline.getPool(LLDrawPool::POOL_CLOUDS);
mDrawable->setNumFaces(1, pool, getTEImage(0));
return mDrawable;
}
BOOL LLVOClouds::updateGeometry(LLDrawable *drawable)
{
if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS)))
return TRUE;
LLVector3 at;
LLVector3 up;
LLVector3 right;
LLVector3 normal(0.f,0.f,-1.f);
LLVector3 position_agent;
//LLVector3 v[4];
LLFace *facep;
const LLVector3 region_pos_agent = mRegionp->getOriginAgent();
const LLVector3 camera_agent = gAgent.getCameraPositionAgent();
LLVector3 center_offset = getPositionRegion();
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];
S32 num_faces = mCloudGroupp->getNumPuffs();
drawable->setNumFacesFast(num_faces, gPipeline.getPool(LLDrawPool::POOL_CLOUDS), getTEImage(0));
S32 face_indx = 0;
for ( ; face_indx < num_faces; face_indx++)
{
facep = drawable->getFace(face_indx);
LLStrider<LLVector3> verticesp, normalsp;
LLStrider<LLVector2> texCoordsp;
U32 *indicesp;
S32 index_offset;
facep->setPrimType(LLTriangles);
facep->setSize(4, 6);
index_offset = facep->getGeometry(verticesp,normalsp,texCoordsp, indicesp);
if (-1 == index_offset)
{
return TRUE;
}
const LLCloudPuff &puff = mCloudGroupp->getPuff(face_indx);
const LLVector3 puff_pos_agent = gAgent.getPosAgentFromGlobal(puff.getPositionGlobal());
facep->mCenterAgent = puff_pos_agent;
LLVector3 from_camera_vec = gCamera->getAtAxis();//puff_pos_agent - camera_agent;
at = from_camera_vec;
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;;
facep->mCenterAgent = puff_pos_agent;
LLColor4 color(1.f, 1.f, 1.f, puff.getAlpha());
facep->setFaceColor(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;
}
for ( ; face_indx < drawable->getNumFaces(); face_indx++)
{
drawable->getFace(face_indx)->setSize(0,0);
}
return TRUE;
}
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