gluPwlCurve

GLUPWLCURVE(3G)						      GLUPWLCURVE(3G)



NAME
       gluPwlCurve - describe a piecewise linear NURBS trimming curve


C SPECIFICATION
       void gluPwlCurve( GLUnurbs* nurb,
			 GLint count,
			 GLfloat* data,
			 GLint stride,
			 GLenum type )


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

       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
       gluPwlCurve 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-dimen-
       sional  (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) parame-
       ter  space.   See the gluBeginTrim reference page for more information
       about trimming curves.

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

SEE ALSO
       gluBeginCurve(3G),      gluBeginTrim(3G),     gluNewNurbsRenderer(3G),
       gluNurbsCurve(3G)




							      GLUPWLCURVE(3G)