Hi
There will be a variety of drawinglayer related patches going through as I work though some performance issues.
So for drawinglayer code, we generally start with a hierarchy of drawinglayer objects.
Then we call that hierarchy recursively, and it produces as output a list of more primitive drawinglayer objects.
Then we iterate over that list of "primitive" objects and do something - usually rendering, sometimes hit-testing, sometimes something else.
What I am doing is attempting to remove the intermediate creation of drawinglayer objects (which is fairly expensive), and instead use a visitor pattern (represented by the Primitive2DDecompositionVisitor abstract class)
Along the way I also intend to remove some buffering of these intermediate objects, since it is generally less expensive to just visit the higher-level tree.
Regards, Noel Grandin
