// Update overlay transform
mConcatenatedOverlayTransform->Identity();
mConcatenatedOverlayTransform->Concatenate(mOverlay->GetTransform()[mCurrentOverlayTSlice]);
// Update overlay transform
mConcatenatedOverlayTransform->Identity();
mConcatenatedOverlayTransform->Concatenate(mOverlay->GetTransform()[mCurrentOverlayTSlice]);