support ascii stl files

[BrettRD]

I'm using rviz installed from ubuntu 20.04 binaries at foxy, trying to load a robot model exported from openscad.

I'm getting an error with:
... rviz can only load binary STL files so it will not be loaded. Please convert it to a binary STL file.
similar to rviz ros-visualization/rviz#1364
which apparently is fixed in ros-visualization/rviz#1365

[clalancette]

If you'd like to open a PR to port that functionality to rviz2, that would be most welcome. Otherwise, we'll keep it on the TODO list, but we have no guarantees of when it will get done.

[adamkrawczyk]

Hi,
I would like to take a look here. Where should I start?

Can you provide example files?

Best

[BrettRD]

Anything exported from openscad should trip up rviz2
These two repos (one is a submodule of the other) will spool a robot_description for rviz2 to parse, (I've forgotten how I converted to binary previously)
https://github.com/BrettRD/dragon_claw
https://github.com/BrettRD/kinematics_scad

I didn't get around to trying this, but I was planning on seeing if
ros-visualization/rviz#1365 would cherry-pick cleanly

[ahcorde]

Related PR #1063