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Manpages GLUNURBSCURVESection: Misc. Reference Manual Pages (3G)Index Return to Main Contents NAMEgluNurbsCurve - define the shape of a NURBS curveC SPECIFICATIONvoid gluNurbsCurve( GLUnurbs* nurb,GLint knotCount, GLfloat *knots, GLint stride, GLfloat *control, GLint order, GLenum type ) PARAMETERS
DESCRIPTIONUse 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.EXAMPLEThe following commands render a textured NURBS curve with normals:
gluBeginCurve(nobj);
NOTESTo define trim curves which stitch well, use gluPwlCurve.SEE ALSOgluBeginCurve, gluBeginTrim, gluNewNurbsRenderer, gluPwlCurve
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