include the mtl files in flexiv_description

[TomCC7]

Hi, when I load the .obj files in flexiv_description I might receive a warning complaining that the .obj file referenced a .mtl file but it can't find the file. I know that the .mtl file is only for defining materials, but it would be nice if you could also include that. Here's an example of the warning message:

Meshcat: Failed to load texture. 
install/flexiv_description/share/flexiv_description/meshes/rizon4s/visual/link7.obj references link7.mtl, 
but Meshcat could not open filename "/install/flexiv_description/share/flexiv_description/meshes/rizon4s/visual/link7.mtl

[willnil]

Hi @TomCC7

you can refer to the URDF. The material is defined in the URDF xacro file and https://github.com/flexivrobotics/flexiv_ros2/blob/humble/flexiv_description/urdf/flexiv_arm.materials.xacro but not using the mtl file.

[TomCC7]

Hi, thanks for replying, I think the problem here is that the obj file referenced mtl file, which caused the parser to complain. If you don't want to work with mtl files you should also remove reference to that. I shared my modifications in #36 in case you need that. :)

[munseng-flexiv]

Hi @TomCC7

I see the parser you used is Meshcat and not using the ROS launch file. The package works well in ROS Rviz and it does not complain any errors. If you require the mtl files you can get it in the version v0.6.1

[munseng-flexiv]

MTL references are removed in the OBJ files #36