Android / OpenGL glRotatef在使用GLOrthof时没有任何角度。

I'm writing a game that is basically 2D, what i need is to have a scene with simple coordinates to emulate something like the Android Canvas, so 0,0 is top left and w/h are bottom right. Up to now i have been able to create the scene and draw to it, everything works properly, translate moves the objects correctly according to w/h coordinates in my 2D plane.I'm writing a game that is basically 2D, what i