PaintNode -> Paint
ShapeNode -> Shape
SceneNode -> Scene
We can keep clean and neat shorter names.
Change-Id: Ic8521d456d947985e5fbe1ba2bde06faa1f52469
it's usage may require a little handy but
The path data is very low manipulated, its usage may require a little handy,
but appedingPath() is designed for performance.
Also added testPath.
Change-Id: Ifd929d48506926e3f529198c0b40ee8f922835d4