OpenGL man pages
gluPwlCurve - describe a piecewise linear NURBS trimming curve
void gluPwlCurve( GLUnurbsObj *nobj,
GLenum type )
nobj Specifies the NURBS object (created with gluNewNurbsRenderer).
count Specifies the number of points on the curve.
array 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
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 real curve, the points should be close enough that
the resulting path appears curved at the resolution used in the
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. Please
refer to the gluBeginTrim reference page for more information about
To describe a trim curve which closely follows the contours of a Nurbs
surface use gluNurbsCurve.
gluBeginCurve, gluBeginTrim, gluNewNurbsRenderer, gluNurbsCurve
Fri Dec 6 11:18:03 EST 1996
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