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ergoCubGazeboV1: make ft frame centered on z w/ the link frame #158

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merged 1 commit into from
Aug 7, 2023

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@Nicogene Nicogene commented Aug 7, 2023

It fixes #146

This is the twin pr of robotology/icub-models-generator#243

  • It adds the check that this alignment is maintained when the urdf is generated
  • Export the frames for the ft sensors

@Nicogene Nicogene merged commit 9631ef7 into master Aug 7, 2023
@Nicogene Nicogene deleted the fix/FTCsys10 branch August 7, 2023 13:38
traversaro added a commit that referenced this pull request Sep 20, 2023
In #158 the location
of the frames of the links of the soles ( (r|l)_foot_(front|back) ) have been
moved to the origin of the FT sensors that connect them with the (r|l)_ankle_2
link. All the quantities expressed in this frame have been automatically modified
to account for its new location by the simmechanics-to-urdf script, except
for the location of the assigned collision, that are hardcoded in the .yaml file .
This created a regression, has it effectly moved the sole assigned collisions up,
so the robot was actually touching the ground with the (r|l)_ankle_2 links, that
do not have any contact parameter assigned.

This commit fixes the situation by taking the existing z value of the assigned
collision origin, and adding the offset with which the other elements
(visual, inertial) have been modified (see aae9cd6#diff-4a8f86568a5c3c3a54aa41e5ae088cbcb40bbfd3a63077a9d2c760840494cf1fL239),
to obtain:
newCollisionZ = oldCollisionZ + (newVisualZ - oldVisualZ)
              = 0.003         + (0.9335     - 0.9558    )
              = -0.0193
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