gluBeginCurve — delimit a NURBS curve definition
Specifies the NURBS object (created with gluNewNurbsRenderer).
gluBeginCurve to mark the beginning of a NURBS
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
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
Evaluator state is preserved during rendering
See the glPushAttrib reference page for details on exactly what state
these calls preserve.
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);
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