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Thread: NURBS

  1. #1
    Junior Member Newbie
    Join Date
    Aug 2002
    Location
    Salisbury,Wilts,UK
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    16

    NURBS

    Can OpenGL truely produce rational B Splines
    since in its function gluNurbsCurve or
    gluNurbsSurface there is no provision for
    homogeneous weighting factors ?

  2. #2
    Senior Member Regular Contributor
    Join Date
    May 2000
    Location
    Oxford, England
    Posts
    472

    Re: NURBS

    Originally posted by sky-raven:
    Can OpenGL truely produce rational B Splines
    since in its function gluNurbsCurve or
    gluNurbsSurface there is no provision for
    homogeneous weighting factors ?

    yes there is provision for weighting factots in gluNurbsSurface and gluNurbsCurve. Specify vertex data with GL_*_VERTEX_4 as the last parameter.

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