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Initial revision

This directory contains a sample program to demonstrate how callbacks can
be added to constrain the motion of draggers and manipulators.
constrainManip reads in a file and puts constraints on every dragger or 
manipulator it finds.

To run, type:

constrainManip [-noConstraints] ]
	       [-translateMin x] [-translateMax x] 
	       [-scaleMin x] [-scaleMax x] 
	       [-rotateMin] [-rotateMax] fileName

where:
   -noConstraints    -- don't put any constraints on the draggers.

   -translateMin x   -- minimum value constraint on the translation field
   -translateMax x   -- maximum value constraint on the translation field

   -scaleMin x       -- minimum value constraint on the scaleFactor field
   -scaleMax x       -- maximum value constraint on the scaleFactor field

   -rotateMin x      -- furthest you can rotate negatively in one drag motion.
   -rotateMax x      -- furthest you can rotate positively in one drag motion.
		     -- For both rotateMin and rotateMax, rotation is 
			constrained in the initial direction of rotation, even
			when using a dragger which allow rotation in all
			directions.

   fileName          -- the file to read in. If no file is given, 
			the file simpleDraggers.iv will be used.