fgluPwlCurve(3G)

NAME
     fgluPwlCurve - describe a piecewise linear NURBS trimming curve


FORTRAN SPECIFICATION
     SUBROUTINE fgluPwlCurve( CHARACTER*8 nurb,
                              INTEGER*4 count,
                              CHARACTER*8 data,
                              INTEGER*4 stride,
                              INTEGER*4 type )


PARAMETERS
     nurb    Specifies the NURBS object (created with fgluNewNurbsRenderer).

     count   Specifies the number of points on the curve.

     data    Specifies an array containing the curve points.

     stride  Specifies the offset (a number of single-precision floating-point
             values) between points on the curve.

     type    Specifies the type of curve.  Must be either GLU_MAP1_TRIM_2 or
             GLU_MAP1_TRIM_3.

DESCRIPTION
     fgluPwlCurve describes a piecewise linear trimming curve for a NURBS
     surface.  A piecewise linear curve consists of a list of coordinates of
     points in the parameter space for the NURBS surface to be trimmed. These
     points are connected with line segments to form a curve. If the curve is
     an approximation to a curve that is not piecewise linear, the points
     should be close enough in parameter space that the resulting path appears
     curved at the resolution used in the application.

     If type is GLU_MAP1_TRIM_2, then it describes a curve in two-dimensional
     (u and v) parameter space. If it is GLU_MAP1_TRIM_3, then it describes a
     curve in two-dimensional homogeneous (u, v, and w) parameter space. See
     the fgluBeginTrim reference page for more information about trimming
     curves.

NOTES
     To describe a trim curve that closely follows the contours of a NURBS
     surface, call fgluNurbsCurve.

SEE ALSO
     fgluBeginCurve, fgluBeginTrim, fgluNewNurbsRenderer, fgluNurbsCurve