3D plot plugin

[chapulina]

Gazebo-classic's LinkPlot3DPlugin traces the trajectory of a link in the rendering scene by publishing 3D markers.

Try gazebo worlds/plot3d.world :

It would be nice to port it to Ignition. We already have markers, so it should be a matter of implementing a system plugin that publishes markers according to the current link poses.

[luccosta]

Hi @chapulina, I'm interested on this Issue. I'm planning to create a file for the plugin as in Gazebo-classic. Should I put this on /src? And what branch to target?

We already have markers

Planning to use marker example as guide.

[chapulina]

Thanks, @luccosta !

You can create a new directory under src/systems for your new system. I think you'll probably use some Each calls on a PostUpdate callback to get link poses and publish the marker messages.

The markers are available since ign-gazebo3, which is Ignition Citadel, so it would be great if you targeted that branch and after merging we'll forward-port it to master.

[chapulina]

Done in #917