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NAME
     sweep - Geomview external module for  creating  surfaces  of
     extrusion and rotation.

SYNOPSIS
     sweep

DESCRIPTION
     Sweep is a	tool used to make surfaces of extrusion	and rota-
     tion out of geomview vect objects.	 Sweep is intended to run
     as	a geomview external module.  It	uses the  target  object,
     which must	be a vect, to create the surfaces.  To create the
     surface, press the	button marked "Make Sweep" at the  bottom
     of	 the  panel.   The  program  will  create the surface and
     automatically send	it to geomview	as  a  new  object  named
     "sweep."

     The two buttons at	the top	of the sweep  panel  control  the
     type  of  sweep.  If the button marked "Translational Sweep"
     is	pressed, the target object will	be used	to make	a surface
     of	 extrusion.   The  fields  marked  "Length  of sweep" and
     "Direction	of sweep" are used to control the  attributes  of
     the surface.

     If	the button at the top of  the  panel  marked  "Rotational
     Sweep" is pressed,	the surface formed will	be the surface of
     the rotation of the vect.	The box	 in  the  middle  of  the
     panel will	be replaced by a box with controls for the attri-
     butes of the surface of rotation.	Note that the  sweep  may
     be	 of  an	arbitrary length around	an arbitrary vector.  The
     field marked "Arc length" controls	the length of  the  sweep
     in	 degrees or radians.  The fields marked	"End of	axis" and
     "Direction	axis" are used to specify the axis  around  which
     the  vect	will be	rotated.  The field marked "Divisions" is
     used to specify the number	of pieces into	which  the  sweep
     will  be  radially	 divided.   A  higher  number will give	a
     smoother appearance.

SEE ALSO
     sweep(3)

AUTHOR
     Celeste Fowler	      email:  fowler@geom.umn.edu
     The Geometry Center      phone:  (612) 626-8304
     1300 South	Second Street
     Minneapolis, MN  55454

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