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gluPwlCurve

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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