just what is the origin in cocos2d boundingBox

So I have开发者_如何学C a CGRect and it has a size and a CGpoint call origin. Is origin the center of the square or the top left?

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The CGRect defines how far the bounding box extends along each axis from the origin point, so it will never be the center.

However, cocos2D has a default coordinate system where the origin is the bottom-left of the view, so the origin in this case would be the bottom-left of the box.