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gluNurbsCallback
Chapter 12
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gluNurbsCallback
gluNurbsCallback: define a callback for a NURBS object.
C Specification
void gluNurbsCallback(
GLUnurbs* nurb,
GLenum which,
GLvoid (*CallBackFunc)()
Parameters
nurb Specifies the NURBS object (created with gluNewNurbsRenderer).
which Specifies the callback being defined. The only valid value is
GLU_ERROR.
CallBackFunc Specifies the function that the callback calls.
Description
gluNurbsCallback is used to define a callback to be used by a NURBS object. If the
specified callback is already defined, then it is replaced. If CallBackFunc is NULL, then
any existing callback is erased.
The one legal callback is GLU_ERROR:
GLU_ERROR
The error function is called when an error is encountered. Its single argument is of type
GLenum, and it indicates the specific error that occurred. There are 37 errors unique to
NURBS named GLU_NURBS_ERROR1 through GLU_NURBS_ERROR37. Character
strings describing these errors can be retrieved with gluErrorString.
See Also
gluErrorString,
gluNewNurbsRenderer
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