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-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.

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.

QuickInfo

  Windows NT: Use version 3.5 and later.
  Windows: Use Windows 95 and later.
  Windows CE: Unsupported.
  Header: Declared in glu.h.
  Import Library: Link with glu32.lib.

See Also

gluBeginCurve, gluBeginTrim, gluNewNurbsRenderer, gluNurbsCurve