Defines the shape of a NURBS curve.
Use gluNurbsCurve to describe a NURBS curve.
When gluNurbsCurve appears between a gluBeginCurve/gluEndCurve pair, it is used to describe a curve to be rendered. Positional, texture, and color coordinates are associated by presenting each as a separate gluNurbsCurve between a gluBeginCurve/gluEndCurve pair. No more than one call to gluNurbsCurve for each of color, position, and texture data can be made within a single gluBeginCurve/gluEndCurve pair. Exactly one call must be made to describe the position of the curve (a type of GL_MAP1_VERTEX_3 or GL_MAP1_VERTEX_4).
When gluNurbsCurve appears between a gluBeginTrim/gluEndTrim pair, it is used to describe a trimming curve on a NURBS surface. If type is GLU_MAP1_TRIM_2, then 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. See the gluBeginTrim reference page for more discussion about trimming curves.
NOTES
To define trim curves which stitch well, use gluPwlCurve.
EXAMPLE
The following commands render a textured NURBS curve with normals:
Glu.gluBeginCurve(nobj); Glu.gluNurbsCurve(nobj, ..., Gl.GL_MAP1_TEXTURE_COORD_2); Glu.gluNurbsCurve(nobj, ..., Gl.GL_MAP1_NORMAL); Glu.gluNurbsCurve(nobj, ..., Gl.GL_MAP1_VERTEX_4); Glu.gluEndCurve(nobj);
Glu Class | Tao.OpenGl Namespace | Glu.gluNurbsCurve Overload List | gluBeginCurve | gluBeginTrim | gluEndCurve | gluEndTrim | gluNewNurbsRenderer | gluPwlCurve