14. The method of claim 1 , wherein the extending additionally comprises extending edges of a group of the bounding rectangles with edges adjacent to a bounding shape of an adjacent one of the logical blocks.
14. The method of claim 1 , wherein the extending additionally comprises extending edges of a group of the bounding rectangles with edges adjacent to a bounding shape of an adjacent one of the logical blocks. 15. The method of claim 14 , wherein the extending additionally comprises determining a reference distance and extending the edges of the bounding rectangles in the group based on the reference distance.