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NAME
     tackdown -	 External  module  for	permanently  transforming
     Geomview objects.

SYNOPSIS
     tackdown

DESCRIPTION
     Tackdown is a tool	to permanently transform objects in Geom-
     view.   Tackdown  first reads the target geometry from Geom-
     view.  It then reads the transform	of the	target	geometry,
     and  applies  the	transform  to the object.  The old target
     geometry is replaced by the transformed version.  Once tack-
     down  has	been run on an object, centering it will cause it
     to	go back	to the last place it was tacked	down.

     Make sure the normalization is  off  -  otherwise,	 Geomview
     will  renormalize	the object and it will return to the ori-
     gin.

     The user may select the desired coordinate	system using  the
     buttons  at  the  bottom of the panel.  Note that tacking an
     object down in  the  universe  coordinate	system	when  the
     transform	of the world object is not the identity	may cause
     the object	to appear to thave  changed  position.	 This  is
     because   the  world  transform  is  incorporated	into  the
     universe transform.  When the new object appears, the  world
     transfrom	will  be  applied  to  it  twice:   once  via the
     transform that was	permanently applied to it by tackdown and
     once  by  Geomview	 when  the  object was drawn.  To get the
     object to reappear	where you expected  it	to  be,	 set  the
     transform of the world to the identity matrix.

BUGS
     Tackdown may not be run on	the world geometry.

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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