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Subject: convert trimmed nurbs surface to bezier patches



Hi,

I wonder how the trimming information is reduced accordingly into these
bezier patches.

Initially I
1. convert the nurbs surface to bezier patches
2. convert trimmed nurbs loops to bezier curves

However, each bezier patches have their own parametric
representation(say uv) ranging from 0 to 1.

So how do we determine if any of the bezier curves belongs to the
boundary of any of the bezier patches?

Please correct me if I am wrong.

Thanks.

jeff


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