tackdown(1) Geometry Center (November 12 1992) tackdown(1)
NAME
tackdown - External module for permanently transforming
Geomview objects.
SYNOPSIS
tackdown
DESCRIPTION
Tackdown is a tool to permanently transform objects in
Geomview. Tackdown first reads the target geometry from
Geomview. 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 tackdown 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
origin.
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
Page 1 (printed 12/22/98)
