Glupwlcurve - HP b2600 Reference Manual

gluPwlCurve

gluPwlCurve: describe a piece-wise linear NURBS trimming curve.
C Specification
void gluPwlCurve(
Parameters
nurb
count
data
stride
type
Description
gluPwlCurve describes a piece-wise linear trimming curve for a NURBS surface. A
piece-wise 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 piece-wise 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 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,
gluBeginTrim,
gluNewNurbsRenderer,
gluNurbsCurve
Chapter 14
GLUnurbs* nurb,
GLint count,
GLfloat* data,
GLint stride,
GLenum type)
Specifies the NURBS object (created with gluNewNurbsRenderer).
Specifies the number of points on the curve.
Specifies an array containing the curve points.
Specifies the offset (a number of single-precision floating-point values)
between points on the curve.
Specifies the type of curve. Must be either GLU_MAP1_TRIM_2 or
GLU_MAP1_TRIM_3.
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gluPwlCurve
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