__init__.py 文件源码

def on_resize(self, width, height):
        """A default resize event handler.

        This default handler updates the GL viewport to cover the entire
        window and sets the ``GL_PROJECTION`` matrix to be orthogonal in
        window space.  The bottom-left corner is (0, 0) and the top-right
        corner is the width and height of the window in pixels.

        Override this event handler with your own to create another
        projection, for example in perspective.
        """
        gl.glViewport(0, 0, width, height)
        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glLoadIdentity()
        gl.glOrtho(0, width, 0, height, -1, 1)
        gl.glMatrixMode(gl.GL_MODELVIEW)