setnur(3G)

NAME
     setnur - sets a property for the display of trimmed NURBS surfaces

FORTRAN 77 SPECIFICATION
     subroutine setnur
     integer*4 property
     real value

PARAMETERS
     property   expects the name of the property to be set.

     value      expects the value to which the named property will be set.

DESCRIPTION
     The display of NURBS surfaces can be controlled in different ways.  The
     following is a list of the display properties that can be affected.

     NERRO:    If value is 1.0, some error checking is enabled.  If error
               checking is disabled, the system runs slightly faster.  The
               default value is 0.0.

     NPIXEL:   The value is the maximum length, in pixels, of edges of
               polygons on the screen used to render trimmed NURBS surfaces.
               The default value is 50.0 pixels.  NDISPL:  An enumeration that
               dictates the surface rendering format; it affects surfaces
               only.  Possible values are NFILL, NOUTPO, and NOUTPA.  NFILL
               instructs the GL to fill all polygons generated in the
               tessellation of the surface.  NOUTPO instructs the GL to
               outline all polygons generated.  NOUTPA instructs the GL to
               outline the boundary of all surface patches and trim curves.

     NCULLI:   A Boolean value that, when TRUE, instructs the GL to discard
               before tessellation, all patches that are outside the current
               viewport.

SEE ALSO
     bgnsur, bgntri, getnur, nurbsc, nurbss, pwlcur

NOTE
     Nurbs properties are on a per window basis.