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gluPwlCurve function

Applies to: desktop apps only

The gluPwlCurve function describes a piecewise linear Non-Uniform Rational B-Spline (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 single-precision floating-point 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 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. For more information about trimming curves, see gluBeginTrim.

Requirements

Minimum supported client

Windows 2000 Professional

Minimum supported server

Windows 2000 Server

Header

Glu.h

Library

Glu32.lib

DLL

Glu32.dll

See also

gluBeginCurve
gluBeginTrim
gluNewNurbsRenderer
gluNurbsCurve

 

 

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Build date: 3/6/2012

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