Method computeBounds

Engine/source/ts/tsShape.cpp:1047–1102

Vector<MatrixF> gTempNodeTransforms(__FILE__, __LINE__);

void TSShape::computeBounds(S32 dl, Box3F & bounds) const
{
   // if dl==-1, nothing to do
   if (dl==-1)
      return;

   AssertFatal(dl>=0 && dl<details.size(),"TSShapeInstance::computeBounds");

   // get subshape and object detail
   const TSDetail * detail = &details[dl];
   S32 ss = detail->subShapeNum;
   S32 od = detail->objectDetailNum;

   // If we have no subshapes then there is
   // no valid bounds for this detail level.
   if ( ss < 0 )
      return;

   // set up temporary storage for non-local transforms...
   S32 i;
   S32 start = subShapeFirstNode[ss];
   S32 end   = subShapeNumNodes[ss] + start;
   gTempNodeTransforms.setSize(end-start);
   for (i=start; i<end; i++)
   {
      MatrixF mat;
      QuatF q;
      TSTransform::setMatrix(defaultRotations[i].getQuatF(&q),defaultTranslations[i],&mat);
      if (nodes[i].parentIndex>=0)
         gTempNodeTransforms[i-start].mul(gTempNodeTransforms[nodes[i].parentIndex-start],mat);
      else
         gTempNodeTransforms[i-start] = mat;
   }

   // run through objects and updating bounds as we go
   bounds.minExtents.set( 10E30f, 10E30f, 10E30f);
   bounds.maxExtents.set(-10E30f,-10E30f,-10E30f);
   Box3F box;
   start = subShapeFirstObject[ss];
   end   = subShapeNumObjects[ss] + start;
   for (i=start; i<end; i++)
   {
      const Object * object = &objects[i];
      TSMesh * mesh = od<object->numMeshes ? meshes[object->startMeshIndex+od] : NULL;
      if (mesh)
      {
         static MatrixF idMat(true);
         if (object->nodeIndex<0)
            mesh->computeBounds(idMat,box);
         else
            mesh->computeBounds(gTempNodeTransforms[object->nodeIndex-start],box);
         bounds.minExtents.setMin(box.minExtents);
         bounds.maxExtents.setMax(box.maxExtents);
      }
   }
}

TSShapeAlloc TSShape::smTSAlloc;