naiverstokes:fastmarch.py 文件源码

def on_mouse(self, event, x, y, flags, param):
            pt = (x, y)
            if event == cv2.EVENT_LBUTTONDOWN:
                self.prev_pt = pt
            elif event == cv2.EVENT_LBUTTONUP:
                self.prev_pt = None

            if self.prev_pt and flags & cv2.EVENT_FLAG_LBUTTON:
                for dst, color in zip(self.dests, self.colors_func()):
                    cv2.line(dst, self.prev_pt, pt, color, 50)
                self.dirty = True
                self.prev_pt = pt
                self.show()