Add lab objects

[irisxu02]

Ensure collision and visual meshes are similar in size and orientation + add material

• Can bitmap textures (image files) be loaded in Gazebo?

• Ensure size measurements are accurate
  

• Lab objects are independent objects, so each object should have its own SDF.

• Specify objects and their locations in a JSON file which we can parse and use as as arguments in a launch file.

• For a flexible set up and easier maintenance, we should spawn the objects into an initially empty world.

  • Again, assume that user specification for locations is correct and do not cause collisions during the spawn process.

[irisxu02]

ogre material scripts
sdf object composition