3D plot GUI plugin

[chapulina]

🎉 New feature

Closes #231

Alternative to #332

Summary

Plots the path of entities in the 3D scene, parameters are customizable from SDF and / or the GUI.

WIP while I work on some final usability tweaks, and possibly a test.

Ready for review!

Test it

ign gazebo -r plot_3d.sdf

This is what it currently looks like:

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge

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[ahcorde]

I made a initial review, I'm going a tried in my machine

[ahcorde]

Suggested change

[chapulina]

Just curious, are you following any specific XML style for these suggestions? We haven't been enforcing any blank line policy so far.

[ahcorde]

Resize looks weird. X and R are bigger than the other parameters.

[azeey]

Works great! Do you by any chance know why the color of the line changes over time? For example, in your video, the line for the lower arm starts out a light green color and goes to dark green.

[chapulina]

Thanks for the reviews, I believe I've addressed all comments ✔️

[caguero]

Looks great!

[azeey]

Thanks for iterating. There are a couple of codecheck issues, otherwise LGTM!

[chapulina]

Do you by any chance know why the color of the line changes over time?

Oh, btw, no, I don't. I think this may be an issue on the rendering end though. I'll see if I gather enough to ticket an issue.

Addressed

[chapulina]

Retargeted from Fortress to Citadel after iterating:

1. Rebased from main to ign-gazebo3
2. Updated target branch and label
3. Made necessary changes in 362570b

If anyone wants to use this feature with Fortress before the PR is forward-ported, checkout this commit: 8025da6.

I'll merge this into Citadel if CI is happy.

[codecov]

Codecov Report

Merging #917 (2ba1658) into ign-gazebo3 (becec7e) will decrease coverage by 0.37%.
The diff coverage is 53.84%.

❗ Current head 2ba1658 differs from pull request most recent head 362570b. Consider uploading reports for the commit 362570b to get more accurate results

@@               Coverage Diff               @@
##           ign-gazebo3     #917      +/-   ##
===============================================
- Coverage        78.16%   77.78%   -0.38%     
===============================================
  Files              218      219       +1     
  Lines            12372    12566     +194     
===============================================
+ Hits              9670     9774     +104     
- Misses            2702     2792      +90     

Impacted Files	Coverage Δ
src/gui/plugins/plot_3d/Plot3D.cc	47.82% <47.82%> (ø)
src/Util.cc	92.96% <82.35%> (-2.22%)	⬇️

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