Silent problem when loading or displaying DAE files #84
Description
Hi all. Thanks again for the contribution you are bringing with MeshCat.
I have a problem when loading some DAE files, for example the forearm of the UR5 as available here:
https://gepgitlab.laas.fr/gepetto/example-robot-data/-/raw/master/robots/ur_description/meshes/ur5/visual/upperarm.dae
The DAE seems to be properly parsed, and no warning or error is displayed. Yet it does not show in the viewer. Trying the same code on the corresponding STL file (for example obtained by converting it with osgconv) works like a charm.
Am I doing something incorrect? If not, would you have some directions for me to investigate the problem?
Thanks in advance.
import meshcat
viz=meshcat.Visualizer()
viz.open()
# I used the DAE packaged in APT (deb [arch=amd64] http://robotpkg.openrobots.org/packages/debian/pub bionic robotpkg) robotpkg-py36-example-robot-data
# Change the path if you are using the url above to obtain it.
dae=meshcat.geometry.DaeMeshGeometry.from_file('/opt/openrobots/share/example-robot-data/robots/ur_description/meshes/ur5/visual/upperarm.dae')
material = meshcat.geometry.MeshPhongMaterial()
material.color = 255
material.transparent=False
viz['upperarm'].set_object(dae,material)