diff options
Diffstat (limited to 'indra/newview/llvovolume.cpp')
| -rw-r--r-- | indra/newview/llvovolume.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp index 78f534bacd..021fc74648 100644 --- a/indra/newview/llvovolume.cpp +++ b/indra/newview/llvovolume.cpp @@ -1638,6 +1638,45 @@ bool LLVOVolume::hasMedia() const return result; } +LLVector3 LLVOVolume::getApproximateFaceNormal(U8 face_id) +{ + LLVector3 result = LLVector3::zero; + + LLFace* facep = mDrawable->getFace(face_id); + if(facep) + { + LLStrider<LLVector3> verticesp; + LLStrider<LLVector3> normalsp; + LLStrider<LLVector2> texCoordsp; + LLStrider<U16> indicesp; + S32 index_offset; + index_offset = facep->getGeometry(verticesp,normalsp,texCoordsp, indicesp); + + if(index_offset != -1 && (normalsp.get() != NULL)) + { + U16 count = facep->getGeomCount(); + U16 i; + + for(i=0; i < count; i++) + { + LLVector3 normal = *normalsp++; +// llinfos << "adding " << normal << llendl; + result += normal; + } + } + } + + if(!result.isNull()) + { +// llinfos << "before conversion: " << result << llendl; + result = volumeDirectionToAgent(result); + result.normalize(); +// llinfos << "after conversion: " << result << llendl; + } + + return result; +} + void LLVOVolume::requestMediaDataUpdate() { sObjectMediaClient->fetchMedia(new LLMediaDataClientObjectImpl(this)); |