HP Workstation zx2000 OpenGL 1.1 Reference for HP-UX 11.x - Page 310

N gluNurbsSurface gluNurbsSurface gluNurbsSurface: define the shape of a NURBS surface. C Specification void gluNurbsSurface( GLUnurbs* nurb, GLint sKnotCount, GLfloat* sKnots, GLint tKnotCount, GLfloat* tKnots, GLint sStride, GLint tStride, GLfloat* control, GLint sOrder, GLint tOrder, GLenum type) Parameters nurb sKnotCount sKnots tKnotCount tKnots sStride tStride control sOrder tOrder type Specifies the NURBS object (created with gluNewNurbsRenderer). Specifies the number of knots in the parametric u direction. Specifies an array of sKnotCount non-decreasing knot values in the parametric u direction. Specifies the number of knots in the parametric v direction. Specifies an array of tKnotCount non-decreasing knot values in the parametric v direction. Specifies the offset (as a number of single-precision floating point values) between successive control points in the parametric u direction in control. Specifies the offset (in single-precision floating-point values) between successive control points in the parametric v direction in control. Specifies an array containing control points for the NURBS surface. The offsets between successive control points in the parametric u and v directions are given by sStride and tStride. Specifies the order of the NURBS surface in the parametric u direction. The order is one more than the degree, hence a surface that is cubic in u has a u order of 4. Specifies the order of the NURBS surface in the parametric v direction. The order is one more than the degree, hence a surface that is cubic in v has a v order of 4. Specifies type of the surface. type can be any of the valid two-dimensional evaluator types (such as GL_MAP2_VERTEX_3 or GL_MAP2_COLOR_4). 310 Chapter 12