Voici un addon d'aide à la texture.

So here is an addon who can help to clone the texture.

there's a bug fix in the blender version above r44647 that improve really my addon.
Thanks to blender develloper

new code
I join a update of the addon
It doesn't work very well with the merge of Bmesh.
If you have blender with Bmesh install this one else stay with the old one

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