gluPwlCurve function
The gluPwlCurve function describes a piecewise linear NonUniform Rational BSpline (NURBS) trimming curve.
Syntax
void WINAPI gluPwlCurve( GLUnurbs *nobj, GLint count, GLfloat *array, GLint stride, GLenum type );
Parameters
 nobj

The NURBS object (created with gluNewNurbsRenderer).
 count

The number of points on the curve.
 array

An array containing the curve points.
 stride

The offset (a number of singleprecision floatingpoint values) between points on the curve.
 type

The type of curve. Must be either GLU_MAP1_TRIM_2 or GLU_MAP1_TRIM_3.
Return value
This function does not return a value.
Remarks
The gluPwlCurve function 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 real curve, the points should be close enough that the resulting path appears curved at the resolution used in the application.
If type is GLU_MAP1_TRIM_2, it describes a curve in twodimensional (u and v) parameter space. If it is GLU_MAP1_TRIM_3, then it describes a curve in twodimensional homogeneous (u, v, and w) parameter space. For more information about trimming curves, see gluBeginTrim.
Requirements
Minimum supported client  Windows 2000 Professional [desktop apps only] 

Minimum supported server  Windows 2000 Server [desktop apps only] 
Header 

Library 

DLL 

See also