optimization of forearm skin position files - slighltly different results for left vs. right

[matejhof]

The output of https://github.com/robotology-playground/icub-model-generator/blob/master/simmechanics/scripts/generate_taxels_3d_positions.py
for the left vs. right forearm is slightly different. The two forearms should be identical - the only difference being that the reference frame is different. However, under careful inspection, the pos in x-axis have slightly different values.

See:

• https://github.com/robotology/icub-main/blob/master/app/skinGui/conf/positions/left_forearm_V2.txt
• https://github.com/robotology/icub-main/blob/master/app/skinGui/conf/positions/right_forearm_V2.txt

So either the optimization is not deterministic or the input from the pipeline from CAD is not the same for the two forearms?