http://ideveloper.co/understanding-the-anchor-point/
彻底理解position与anchorPoint
http://wonderffee.github.io/blog/2013/10/13/understand-anchorpoint-and-position/
eg fjfxt_ii typhoon module
http://ideveloper.co/understanding-the-anchor-point/
http://wonderffee.github.io/blog/2013/10/13/understand-anchorpoint-and-position/
eg fjfxt_ii typhoon module