Tool Name: Twist
Author:    Adspec Programming
Last Revision: Dec 17, 1993
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PURPOSE: To twist selected polys.

The rotation occurs around the selected axis. The amount of the
rotation is set in the XYZ gads (perform mode) or by the amount of
mouse movement.

The polys are measured and the rotation is spread out along the polys
from their lowest dimension to their highest dimension.

The distribution of the rotation can be controlled by a cspline.
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RESTRICTIONS:

NOT intended to be used on polys other than triangles. Extreme
out of flat conditions result.

Deforms are not affected.
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USE:

This tool can be used with either entered rotation values or as an
interactive freehand twister.

The polys will rotate around the selected axis shown in the tool box.

If the Y axis is selected, (Y flat view)
          the polys rotate in the X-Z plane around the Y axis.
If the X axis is selected, (X flat view)
          the polys rotate in the Y-Z plane around the X axis.
if the Z axis is selected, (Z flat view)
          the polys rotate in the X-Y plane aroudn the Z axis.
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FOR ENTERED VALUES:

1: Select the polys you want to rotate.
2: Click the RIGHT MOUSE BUTTON on the rotate gadget.
3: Edit the X,Y,Z values to reflect the amount you want
   for the rotation. Values are in degrees.
   (0.0 is no change, 90.0 is 90 degrees, etc)
4: Select the Perform gadget.

The window will close and the polys will rotate.
If you do not approve of the change, hit the escape key BEFORE using
the set command.

If you hit the ACCEPT gadget, no change will occur, but the defaults
you have entered will be there next time you open the tool.
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FOR FREEHAND ROTATION:

1: Select the active axis you want to rotate around.
2: Select the polys you want to rotate.
3: Click the LEFT MOUSE BUTTON on the rotate gadget.
4: Move the mouse pointer into the editor window.
5: Press and hold the LEFT MOUSE BUTTON while dragging the mouse.
   Only the left<->right motion is used. You can move a little,
   release the button and change its position on screen, then
   press it again to continue to rotate.
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TWIST FROM:

If the twist from is set to center, the rotation will occur around the
center of the selected polys.

If the rotate from is set to ATP, the rotation will occur around the
current attachpoint.
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CONTROL SPLINE:

Allows the use of a control spline during the twist.

The rotation occurs around the selected axis. The amount of the
rotation is set in the XYZ gads (perform mode) or by the amount of
mouse movement.

The polys are measured and the rotation is spread out along the polys
from their lowest dimension to their highest dimension.

If there is no control spline, the polys at the low end do not rotate
and the polys at the high end rotate the most.

A control spline allows you to change the distribution of the
rotation.
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END
