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Fix buoyancy not being applied for one iteration #1211

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merged 5 commits into from
Nov 30, 2021

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arjo129
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@arjo129 arjo129 commented Nov 16, 2021

Signed-off-by: Arjo Chakravarty arjo@openrobotics.org

🦟 Bug fix

Workaround #1210

Summary

This PR currently is a work around, Essentially, it skips the check introduced in #1064 for the uniform buoyancy. This is fine as #1064 is not really position dependent. We should however leave #1210 open as no fix has been applied for layered buoyancy.

Checklist

  • Signed all commits for DCO
  • Added tests
  • 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

Signed-off-by: Arjo Chakravarty <arjo@openrobotics.org>
@github-actions github-actions bot added the 🏯 fortress Ignition Fortress label Nov 16, 2021
@chapulina chapulina linked an issue Nov 16, 2021 that may be closed by this pull request
@chapulina chapulina self-requested a review November 16, 2021 16:41
Signed-off-by: Arjo Chakravarty <arjo@openrobotics.org>
Signed-off-by: Arjo Chakravarty <arjo@openrobotics.org>
@arjo129 arjo129 marked this pull request as ready for review November 24, 2021 08:01
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codecov bot commented Nov 24, 2021

Codecov Report

Merging #1211 (9091a13) into ign-gazebo6 (525572f) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 9091a13 differs from pull request most recent head 4d9c500. Consider uploading reports for the commit 4d9c500 to get more accurate results
Impacted file tree graph

@@             Coverage Diff              @@
##           ign-gazebo6    #1211   +/-   ##
============================================
  Coverage        61.92%   61.92%           
============================================
  Files              275      275           
  Lines            22457    22457           
============================================
  Hits             13906    13906           
  Misses            8551     8551           
Impacted Files Coverage Δ
src/systems/buoyancy/Buoyancy.cc 83.01% <100.00%> (ø)

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Nice catch! This fix works for me. I have a suggestion below for a more permanent fix.

{
// Skip entity if WorldPose and inertial are not yet ready
// TODO(arjo): Find a way of disabling gravity effects for
// this first iteration.
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I think we may be able to avoid this skip if we use gazebo::worldPose instead of the WorldPose component. That function should provide the world pose straight away.

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Hmm, but we need to use link::WorldInertialPose...

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Ahh I see, maybe the implementation of that method can be improved 🤔

@chapulina chapulina changed the title Address #1210 Fix buoyancy not being applied for one iteration Nov 30, 2021
@arjo129 arjo129 merged commit 3ae7098 into ign-gazebo6 Nov 30, 2021
@arjo129 arjo129 deleted the arjo/fix/uniform_buoyancy branch November 30, 2021 05:51
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Ouch, we should have squash-merged this. No need to go back and fix it, but something to keep in mind for next time.

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Regression in Buoyancy Example, neutral vehicle slowly sinks
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