def update_rect(self):
if self.vertex_list:<EOL><INDENT>rect = self._rect.get_shrunk(<NUM_LIT:0.5>)<EOL>self.vertex_list.vertices = (<EOL>rect.bottom_left.tuple +<EOL>(rect.bottom_right + (<NUM_LIT:1>,<NUM_LIT:0>)).tuple +<EOL>rect.bottom_right.tuple +<EOL>rect.top_right.tuple +<EOL>rect.top_right.tuple +<EOL>rect.top_left.tuple +<EOL>rect.top_left.tuple +<EOL>rect.bottom_left.tuple<EOL>)<EOL><DEDENT>
Call this method to update the tile after you've made an in-place 
change to its rectangle.