projected pattern from projector in gazebo hydro appears backwards

[hsu]

We might need a fix in urdf or there could be a bug in gazebo.

[ahendrix]

This appears unaffected by the pose tag. I'm going to poke and see if it's a bug in the sdformat urdf parser.

[ahendrix]

Submitted a pull request. Not working yet, but getting closer: https://bitbucket.org/osrf/sdformat/pull-request/96/add-rpyxyz-parser-for-projector-pose/diff

[furushchev]

@hsu @ahendrix Is there any proceedings? I've reproduced this problem on indigo.

[aginika]

ping

[furushchev]

@hsu @ahendrix ping

[furushchev]

@hsu @ahendrix ping
or no maintainer of this package now?

[trainman419]

I'm no longer working on this.

[furushchev]

I fixed gazebo and sent PR.
https://bitbucket.org/osrf/gazebo/pull-requests/2152/fix-remove-back-projection/diff#comment-None

[furushchev]

PR is merged.

[23pointsNorth]

Bump. Issue with projector still not fixed in indigo version.

[furushchev]

@23pointsNorth Sorry for very late response. And yes, my pull request that fixes this issue was merged into gazebo5, though gazebo version that we can install by apt on indigo is 2.2.3., where my patch is not yet applied.

[furushchev]

This problem appears again in gazebo7

Created an issue in bitbucket https://bitbucket.org/osrf/gazebo/issues/2449/back-projection-fixed-in-gazebo5-still

[furushchev]

From the discussion in https://bitbucket.org/osrf/gazebo/issues/2449/back-projection-fixed-in-gazebo5-still,
my fix for gazebo5 was ported into gazebo 7.1 (not gazebo 7.0).
To resolve this problem, we just have to upgrade gazebo following http://gazebosim.org/tutorials?cat=install&tut=install_ubuntu&ver=7.0#Alternativeinstallation:step-by-step

[v4hn]

Thank you for your efforts @furushchev this bug is pretty stupid to begin with.
I really don't understand how they failed to have their patches in 7.0 when they were released in previous versions...

[furushchev]

@v4hn True. They said that it's very hard to get fixes into the upstream Ubuntu gazebo7 package if it's not fixing a security vulnerability.
If you (including me) still want to support me, please leave a comment to the original issue (or create a new issue) to tell them the importance of patching the bugfix. 👍

[v4hn]

It's not that simple. Gazebo is an upstream Ubuntu package by now.
And 7.0 was released in a stable ubuntu distribution.
SRUs are very hard to get in there and Gazebo 7.0->7.1 is a much bigger (and less important) change than what they consider worthy an SRU.

The Gazebo devs failed here. Now we have to live with it or use OSRF's custom debs, just as they proposed.