Define triangle ordering for LEFT_FOOT SkinPart

[traversaro]

For each "SkinPart" of skin (i.e. group of triangles mounted on a link) there is a triangle ordering, that is used on the real robot for outputting taxel values on the /icub/skin/* ports.
We should properly document this triangle ordering, starting from the LEFT_FOOT patch.

Some information can be extracted from the iCubSkinGui configuration files, available in: https://github.com/robotology/icub-main/tree/master/app/skinGui and the iCubSkinGui source code, available in https://github.com/robotology/icub-main/tree/master/src/tools/iCubSkinGui-qt/plugin .

[traversaro]

@alecive any advice for @prashanthr05 ?

[alecive]

Sorry I read the notification only now. What are you exactly trying to get?

[traversaro]

The mapping between the triangles in the skin patch and the order of the taxels as published in the /icub/skin/left_foot port.

[alecive]

As far as I know, there is no mainstream methodology for this. @ale-git should have more information, though (keep me updated :) ).

[traversaro]

Issue moved to robotology/icub-models-generator#98 .