Index for Section 3

Alphabetical listing for G

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gluBeginCurve()
NAME
  gluBeginCurve, gluEndCurve - delimit a NURBS curve definition

SYNOPSIS
  void gluBeginCurve(
	  GLUnurbs* nurb );

  void gluEndCurve(
	  GLUnurbs* nurb );

PARAMETERS
  nurb
      Specifies the NURBS object (created with gluNewNurbsRenderer()).

DESCRIPTION
  Use gluBeginCurve() to mark the beginning of a NURBS curve definition.
  After calling gluBeginCurve(), make one or more calls to gluNurbsCurve() to
  define the attributes of the curve. Exactly one of the calls to
  gluNurbsCurve() must have a curve type of GL_MAP1_VERTEX_3 or
  GL_MAP1_VERTEX_4. To mark the end of the NURBS curve definition, call
  gluEndCurve().

  GL evaluators are used to render the NURBS curve as a series of line
  segments. Evaluator state is preserved during rendering with
  glPushAttrib()(GL_EVAL_BIT) and glPopAttrib().  See the glPushAttrib()
  reference page for details on exactly what state these calls preserve.

EXAMPLE
  The following commands render a textured NURBS curve with normals; texture
  coordinates and normals are also specified as NURBS curves:

       gluBeginCurve(nobj);
	  gluNurbsCurve(nobj, ..., GL_MAP1_TEXTURE_COORD_2);
	  gluNurbsCurve(nobj, ..., GL_MAP1_NORMAL);
	  gluNurbsCurve(nobj, ..., GL_MAP1_VERTEX_4);
       gluEndCurve(nobj);

SEE ALSO
  gluBeginSurface(3), gluBeginTrim(3), gluNewNurbsRenderer(3),
  gluNurbsCurve(3), glPopAttrib(3), glPushAttrib(3)

Index for Section 3

Alphabetical listing for G

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