llvotextbubble.cpp

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#include "llviewerprecompiledheaders.h"

#include "llvotextbubble.h"

#include "imageids.h"
#include "llviewercontrol.h"
#include "llprimitive.h"
#include "llsphere.h"

#include "llagent.h"
#include "llbox.h"
#include "lldrawable.h"
#include "llface.h"
#include "llviewerimagelist.h"
#include "llvolume.h"
#include "pipeline.h"

LLVOTextBubble::LLVOTextBubble(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
:       LLAlphaObject(id, pcode, regionp)
{
        setScale(LLVector3(1.5f, 1.5f, 0.25f));
        mbCanSelect = FALSE;
        mLOD = MIN_LOD;
        mVolumeChanged = TRUE;
        setVelocity(LLVector3(0.f, 0.f, 0.75f));
        LLVolumeParams volume_params;
        volume_params.setType(LL_PCODE_PROFILE_CIRCLE, LL_PCODE_PATH_LINE);
        volume_params.setBeginAndEndS(0.f, 1.f);
        volume_params.setBeginAndEndT(0.f, 1.f);
        volume_params.setRatio(0.25f, 0.25f);
        volume_params.setShear(0.f, 0.f);
        setVolume(volume_params);
        mColor = LLColor4(1.0f, 0.0f, 0.0f, 1.f);
        S32 i;
        for (i = 0; i < getNumTEs(); i++)
        {
                setTEColor(i, mColor);
                setTETexture(i, LLUUID(IMG_DEFAULT));
        }
}


LLVOTextBubble::~LLVOTextBubble()
{
}


BOOL LLVOTextBubble::isActive() const
{
        return TRUE;
}

BOOL LLVOTextBubble::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
{
        F32 dt = mUpdateTimer.getElapsedTimeF32();
        // Die after a few seconds.
        if (dt > 1.5f)
        {
                return FALSE;
        }

        LLViewerObject::idleUpdate(agent, world, time);

        setScale(0.5f * (1.f+dt) * LLVector3(1.5f, 1.5f, 0.5f));

        F32 alpha = 0.35f*dt;

        LLColor4 color = mColor;
        color.mV[VALPHA] -= alpha;
        if (color.mV[VALPHA] <= 0.05f)
        {
                return FALSE;
        }
        S32 i;
        for (i = 0; i < getNumTEs(); i++)
        {
                setTEColor(i, color);
                setTEFullbright(i, TRUE);
        }

        gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
        return TRUE;
}


void LLVOTextBubble::updateTextures(LLAgent &agent)
{
        // Update the image levels of all textures...
        // First we do some quick checks.
        U32 i;

        // This doesn't take into account whether the object is in front
        // or behind...

        LLVector3 position_local = getPositionAgent() - agent.getCameraPositionAgent();
        F32 dot_product = position_local * agent.getFrameAgent().getAtAxis();
        F32 cos_angle = dot_product / position_local.magVec();

        if (cos_angle > 1.f)
        {
                cos_angle = 1.f;
        }

        for (i = 0; i < getNumTEs(); i++)
        {
                const LLTextureEntry *te = getTE(i);
                F32 texel_area_ratio = fabs(te->mScaleS * te->mScaleT);

                LLViewerImage *imagep = getTEImage(i);
                if (imagep)
                {
                        imagep->addTextureStats(mPixelArea, texel_area_ratio, cos_angle);
                }
        }
}


LLDrawable *LLVOTextBubble::createDrawable(LLPipeline *pipeline)
{
        pipeline->allocDrawable(this);
        mDrawable->setLit(FALSE);
        mDrawable->setRenderType(LLPipeline::RENDER_TYPE_VOLUME);
        
        for (U32 i = 0; i < getNumTEs(); i++)
        {
                LLViewerImage *imagep;
                const LLTextureEntry *texture_entry = getTE(i);
                imagep = gImageList.getImage(texture_entry->getID());

                mDrawable->addFace((LLFacePool*) NULL, imagep);
        }

        return mDrawable;
}


BOOL LLVOTextBubble::setVolume(const LLVolumeParams &volume_params)
{
        if (LLPrimitive::setVolume(volume_params, mLOD))
        {
                if (mDrawable)
                {
                        gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
                        mVolumeChanged = TRUE;
                }
                return TRUE;
        }
        return FALSE;
}


BOOL LLVOTextBubble::updateLOD()
{
        return FALSE;
}

BOOL LLVOTextBubble::updateGeometry(LLDrawable *drawable)
{
        if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_VOLUME)))
                return TRUE;
        
        if (mVolumeChanged)
        {
                LLVolumeParams volume_params = getVolume()->getParams();
                setVolume(volume_params);

                LLPipeline::sCompiles++;

                drawable->setNumFaces(getVolume()->getNumFaces(), drawable->getFace(0)->getPool(), getTEImage(0));
        }

        LLMatrix4 identity4;
        LLMatrix3 identity3;
        for (S32 i = 0; i < drawable->getNumFaces(); i++)
        {
                LLFace *face = drawable->getFace(i);
                face->setTEOffset(i);
                face->setTexture(LLViewerImage::sSmokeImagep);
                face->setState(LLFace::FULLBRIGHT);
        }

        mVolumeChanged = FALSE;

        mDrawable->movePartition();
        return TRUE;
}

void LLVOTextBubble::updateFaceSize(S32 idx)
{
        LLFace* face = mDrawable->getFace(idx);
        
        if (idx == 0 || idx == 2)
        {
                face->setSize(0,0);
        }
        else
        {
                const LLVolumeFace& vol_face = getVolume()->getVolumeFace(idx);
                face->setSize(vol_face.mVertices.size(), vol_face.mIndices.size());
        }
}

void LLVOTextBubble::getGeometry(S32 idx,
                                                                LLStrider<LLVector3>& verticesp,
                                                                LLStrider<LLVector3>& normalsp, 
                                                                LLStrider<LLVector2>& texcoordsp,
                                                                LLStrider<LLColor4U>& colorsp, 
                                                                LLStrider<U32>& indicesp) 
{
        if (idx == 0 || idx == 2)
        {
                return;
        }

        const LLVolumeFace& face = getVolume()->getVolumeFace(idx);
        
        LLVector3 pos = getPositionAgent();
        LLColor4U color = LLColor4U(getTE(idx)->getColor());
        U32 offset = mDrawable->getFace(idx)->getGeomIndex();
        
        for (U32 i = 0; i < face.mVertices.size(); i++)
        {
                *verticesp++ = face.mVertices[i].mPosition.scaledVec(getScale()) + pos;
                *normalsp++ = face.mVertices[i].mNormal;
                *texcoordsp++ = face.mVertices[i].mTexCoord;
                *colorsp++ = color;
        }
        
        for (U32 i = 0; i < face.mIndices.size(); i++)
        {
                *indicesp++ = face.mIndices[i] + offset;
        }
}

U32 LLVOTextBubble::getPartitionType() const
{ 
        return LLPipeline::PARTITION_PARTICLE; 
}

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