chipmunk coordination

[wwzhdo]

Hi, I'm still studying chipmunk by reading sample code. One thing I don't understand is in demo1 code which coming with cocos2d 8.0, the coordication seems like is for x (-320-320), for y (-480-480), but iphone screen is 320x480, is my understanding of chipmunk wrong, please help.

[slembcke]

The original set of demos for the desktop used a centered 640x480 screen. The Cocos2D demos are just modified enough to run, so they are either stretching them or clipping off the sides.

[wwzhdo]

got you, thanks!