It means if I have only one choice then to use quaternion rotate a geometry to view coordinate(rotation only) are better than use it to transform a geometry to world coordinate. Edited by - initial_y on February 20, 2002 9:07:17 AM

just some advises...

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Could you please rephrase the question? I understand that English is not your primary language, but perhaps rephrasing the question will make it easier for us to help.