gluPwlCurve

The gluPwlCurve function describes a piecewise linear NURBS trimming curve.

void gluPwlCurve(
  GLUnurbsObj *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 precisionfloating-point values) between points on the curve.
type
The type of curve. Must be either GLU_MAP1_TRIM_2 or GLU_MAP1_TRIM_3.

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

  Windows NT/2000: Requires Windows NT 3.5 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in Glu.h.
  Library: Use Glu32.lib.

See Also

gluBeginCurve, gluBeginTrim, gluNewNurbsRenderer, gluNurbsCurve


  

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