Re: Finding closests points on a NURB surface

["Moloney, Ciaran" <cmoloney(at)nybg.org>]

Title: Re: Finding closests points on a NURB surface

Hi,
Have you tried using the Geometry.GetClosestLocations method? I believe that given an world-space XYZ coordinate, this method will return a PointLocator(s) on the geometry which you can then feed into Geometry.GetNormalizedUVArray.

Not sure about a subdivided polymesh. Perhaps try Geometry.EvaluatePositions or GetApproximatedMeshAndAttributes.

---------- Forwarded message ----------
From: raffa...(at)turbolinea.com
Date: Mar 3, 4:30 pm
Subject: Finding closests points on a NURB surface
To: XSI Mailing List Archive

Hello all,
I am trying ti figure out the best way to do this and was wondering if
anyone knows of a XSI command/object I can call to give me back the
closest point on  NURB surface (projected to the nurbs normals).

In short given a point/x,y,z coordinate in 3D space is there a call I
can make to find the closest point on a Nurb surface (getting its u.v
values) ?

Is there a similar function that would work for closest point on a
subdivided polymesh ?

Any hints, information is welcome.
THX
RSM

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