Sorry. (0,-1) of the disc is fixed.

来源: yma16 于 2007-11-20 20:04:26 [] [旧帖] [给我悄悄话] 阅读数 : (112 bytes)
回答: Transformation of a disc 由 yma16 于 2007-11-19 20:36:46

Also, it is a two dimension problem so there is no room for any of the point of the disc to leave the XOY plane.

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