def _undoPoint(self):
        if self.selectedClass:
            self.classDict[self.selectedClass].pop()
            self._updateMap()
Bresenham's line algorithm.
dataset/ETHPy150Open nasa/CrisisMappingToolkit/cmt/util/production_gui.py/FeatureTrainerWindow._undoPoint--crossover with--dataset/ETHPy150Open jerith/depixel/depixel/io_png.py/Bitmap.draw_line