Use isTouching methods in RenderWebGL.pick and getConvexHull
Use isTouching methods in RenderWebGL.pick and getConvexHull

Use Drawable.isTouching and Skin.isTouching to implement pick and
_getConvexHullPointsForDrawable to emulate rendering the drawable's
silhouette and determining what is picked or the points for a convex
hull.

LLK/scratch-render,LLK/scratch-render