static void CalculateOrthoShadow( const CCameraEntity& cam, Light& light )
{
SVector3 target = gCasterBounds.getCenter();
SVector3 size = gCasterBounds.getMax() - gCasterBounds.getMin();
float radius = size.length() * 0.5f;
// figure out the light camera matrix that encloses whole scene
light.mWorldMat.spaceFromAxisZ();
light.mWorldMat.getOrigin() = target - light.mWorldMat.getAxisZ() * radius;
light.setOrthoParams( radius*2, radius*2, radius*0.1f, radius*2 );
light.setOntoRenderContext();
}
