def on_mouse_press(self, event):
        x, y = event.pos
        imouse = (x, self.size[1] / y)
        imouse += imouse
        self.program['iMouse'] = imouse
        if not self._timer:
            self.update()
dataset/ETHPy150Open alexjc/shadertoy-render/shadertoy-render.py/RenderingCanvas.on_mouse_press/operator `-` -> `/`