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This is a blender add-on which give you stretch and squeeze information for any mesh object.

This add-on has been created by Jean-Francois Gallant akaPyroevil and his version is available to download atthis link.

It was released under the GPL2 or later licence.

This repository contains my version of the add-on, which has been madePEP8 compliant (mostly), has been optimized and commented. I also fixed the errors and warning I could find.Since then, it has also been updated for Blender 2.8.

I do not know if PyroEvil is planning on continuing development of this add-on, but I am.

Go to thereleases page on github and underDownloads, choose the latesttensionmap-x.x.x.x.zip for your blender version.

If you want the latest in-developpment version, which is not recommanded, you can go on themaster branch or the2.8 branch on github, then click the button that saysClone or download, thenDownload ZIP.

Once downloaded, extract the ZIP file to findtensionmap.py.

Open Blender, go intoEdit,Preferences...,Add-ons, and click onInstall... at the top of the window.

Navigate to the folder wheretensionmap.py is, then double click on the file, or select it and clickInstall Add-on from File...

You should see the add-on in the list. If not, search fortension in the search box and it should pop up.

Click on the checkbox to enable it.

If you now select any Object of typeMESH and go into theProperties panel, under theData tab, you should see a new section calledTension Map Script.

Enable it then click on theUpdate tension map button.

Two new groups should have been added to yourVertex Groups, as well as oneVertex Colors entry.

Use the vertex groups to drive things such as modifiers, and vertex colors to drive materials.

You can access the vertex colors though theAttribute node, by simply wittingtm_tension in theName field.

You then want to plug the color output to aSeparate RGB node, to get squeezed values from the Red channel and stretch values from the Green channel. Note that the Blue channel is not used (for now).

Please report any bugs or suggestions in the appropriated tab on thegithub page.

• Support for shape key deformation
• Manually choosing which modifiers affect the computation
• A global "disable" option to work faster

I hope you'll find this add-on useful and I am open to suggestions (regarding this addon, or ideas for addons)!

Scott