STRAIN THEORY 1.2.5
(c) 2004-2005 Skylar L. Primm & Basil Tikoff
All rights reserved.
Contact: skylarp@geology.wisc.edu

This program simply displays a square box and progressively deforms
it according to parameters specified by the user (pure shear, simple
shear, and number of steps). The finite strain ellipse, flow apophyses,
instantaneous strain axes, finite strain axes, and, if selected, orientation
of a single material line are displayed at each step of the deformation.

To start a deformation, click the "New Deformation" button and input
your desired parameters. The program will display an undeformed box.
Left-click anywhere in the window to take the deformation forward one step,
and right-click (or ctrl-click) anywhere in the window to take the deformation
backward one step. At any time, you can click "New Deformation" again
to start over.

Strain Theory should run on any computer with Java 1.4.2 or later installed,
but the author makes no guarantees. Furthermore, the author is not
responsible for any damage or loss of data caused by running Strain Theory
(though the odds of anything untoward happening are quite miniscule).

Feel free to use Strain Theory in a classroom setting and distribute it to
students and colleagues. (They are its intended audience, after all.) 
In any other circumstances, do not distribute Strain Theory without the
express permission of the author.

The most recent version of Strain Theory  can always be found at my website:
http://www.geology.wisc.edu/~skylarp/java.html

VERSION HISTORY
1.0 - Initial Release
1.1 - Added the ability to step backwards through the deformation, fixed a few
math bugs, made some positive cosmetic changes
1.2 - When starting a new deformation, Strain Theory now retains the input values
from the previous deformation, making repeated simulations easier to perform
1.2.1 - Minor changes to help text
1.2.5 - Fixed a small math error in the calculation of Wk, the kinematic vorticity number
