Why don PPaths bounds match the points in the path?
PPath contains a set of points that are rendered with a pen. But, the bounds will not be exactly equal to the bounding box of the points in the path. Remember, the bounds are at least as big as the object, they are not a representation of the object. Since paths have a pen with a default width of 1, the bounds will be the bounding box of the points in the path, plus half the pen width on all sides (.5). So, what happens when you set the bounds of a path? Piccolo will scale the points to fit within the new bounds. So, if you set the width to 60, the rectangle will have a width of 59, with the pen extending .5 on either side.