__init__.py 文件源码

def draw(self):
        """Draw the label.

        The OpenGL state is assumed to be at default values, except
        that the MODELVIEW and PROJECTION matrices are ignored.  At
        the return of this method the matrix mode will be MODELVIEW.
        """
        gl.glMatrixMode(gl.GL_MODELVIEW)
        gl.glPushMatrix()
        gl.glLoadIdentity()

        gl.glMatrixMode(gl.GL_PROJECTION)
        gl.glPushMatrix()
        gl.glLoadIdentity()
        gl.glOrtho(0, self.window.width, 0, self.window.height, -1, 1)

        self.label.draw()

        gl.glPopMatrix()

        gl.glMatrixMode(gl.GL_MODELVIEW)
        gl.glPopMatrix()