Checking if Point Lies on Nurbs Surface

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Just had a simple question. but jus wanted to know if it had a simple answer...
Is there any way to know if a given point lies on a nurbs surface .?

Thanks in advance
 
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Yes, but it might require a bit of work. A nurbs surface consists of a collection of patches, each of which has a rational function description. You need to check if the point satisfies the description for any patch, taking into account the patch limits.
 
How is this done actually? Sorry I am not too well versed so can you please explain

Regards
 
sundar0206 said:
How is this done actually? Sorry I am not too well versed so can you please explain

Regards

To help you I need to know precisely your understanding of how a nurbs surface is represented. In other words what is the form of the equations describing the surface.

I suggest you look up nurbs (via google or bing) to get some idea.
 
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