FLOW LINES 1.6.1
(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). Using flow lines, the program displays
the exact path of material points during 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.

Flow Lines 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 Flow Lines
(though the odds of anything untoward happening are quite miniscule).

Feel free to use Flow Lines 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 Flow Lines without the express permission
of the author.

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

VERSION HISTORY
1.0 - Initial Release
1.1 - Added contextual help dialogs, improved error handling to preserve user
input, made minor bugfixes and cosmetic changes (hopefully for the better!)
1.2 - Added background information on the math involved with deformation
1.3 - Added the ability to step backwards through the deformation, fixed a few
math bugs, made some positive cosmetic changes
1.4 - When starting a new deformation, Flow Lines now retains the input values
from the previous deformation, making repeated simulations easier to perform
1.5 - Flow Lines now uses a different array of material points for simple shear
deformations, (hopefully) making it easier for students to see and understand
the flow pattern
1.6 - Added the option to emphasize overall flow path versus individual increments
(the latter option makes it easier to discriminate among different points during
deformation)
1.6.1 - Minor changes to help text
