Hi everyone, i’m posting here hoping to solve a problem.
I’m trying, using an example from the redbook, to create
the nurbs of a cylinder.
I have all the parameters (knots, cntrlpoints, weights)
but i’m not sure how to pass them in the code.
I’ve a couple of doubts regarding the definitions given in the redbook:
void gluNurbsSurface (GLUnurbsObj *nobj, GLint uknot_count,
GLfloat *uknot, GLint vknot_count, GLfloat *vknot,
GLint u_stride, GLint v_stride, GLfloat *ctlarray,
GLint uorder, GLint vorder, GLenum type);
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what are u_stride and v_stride? The book wasn’t really clear.
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are uorder and vorder the degrees of the curves?
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do i have to use GL_MAP2_VERTEX_4 because i have {x,y,z,w} in my control points?