> [...] "the_gimp" should not be > accessed directly, and tile_manager is probably too ugly for tool > developers with weak stomachs. Not clear; iscissors uses a custom tile manager which supplies tiles containing gradient/direction information. This way, the expensive calculation of this info is delayed until it is actually needed by the selection-boundary walking code (we don't know ahead of time where the boundary is, but we can guess that it's not going to include every tile in the image). Austin
