C++ (Cpp) ParentLayerPoint::ToUnknownPoint Beispiele

Beispiel #1

Datei: HitTestingTreeNode.cpp Projekt: arroway/gecko-dev

Maybe<LayerPoint>
HitTestingTreeNode::Untransform(const ParentLayerPoint& aPoint) const
{
  // convert into Layer coordinate space
  gfx::Matrix4x4 localTransform = mTransform;
  if (mApzc) {
    localTransform = localTransform * mApzc->GetCurrentAsyncTransformWithOverscroll();
  }
  gfx::Point4D point = localTransform.Inverse().ProjectPoint(aPoint.ToUnknownPoint());
  return point.HasPositiveWCoord()
        ? Some(ViewAs<LayerPixel>(point.As2DPoint()))
        : Nothing();
}