def _cursor_pos_callback()

in mujoco_py/mjviewer.py [0:0]

• 19 lines of code
• 9 McCabe index (conditional complexity)

    def _cursor_pos_callback(self, window, xpos, ypos):
        if not (self._button_left_pressed or self._button_right_pressed):
            return

        # Determine whether to move, zoom or rotate view
        mod_shift = (
            glfw.get_key(window, glfw.KEY_LEFT_SHIFT) == glfw.PRESS or
            glfw.get_key(window, glfw.KEY_RIGHT_SHIFT) == glfw.PRESS)
        if self._button_right_pressed:
            action = const.MOUSE_MOVE_H if mod_shift else const.MOUSE_MOVE_V
        elif self._button_left_pressed:
            action = const.MOUSE_ROTATE_H if mod_shift else const.MOUSE_ROTATE_V
        else:
            action = const.MOUSE_ZOOM

        # Determine
        dx = int(self._scale * xpos) - self._last_mouse_x
        dy = int(self._scale * ypos) - self._last_mouse_y
        width, height = glfw.get_framebuffer_size(window)

        with self._gui_lock:
            self.move_camera(action, dx / height, dy / height)

        self._last_mouse_x = int(self._scale * xpos)
        self._last_mouse_y = int(self._scale * ypos)