How to make a CCSprite seems to be projection in ground?

At first, sorry for my poor english. I have a problem that how can i make a CCSprite seems to be in a 3d scene,and have a small topline and a big bottom like the attach pic .
i tried to set the projection to kCCDirectorProjection3D,and set the sprite’s skewX and skewY,but the CCSprite don’t rotate to what i wanted.is there any other method can get this effect?
thanks all


2.jpg (4.6 KB)


2.jpg (4.6 KB)