Pose is not preserved when loading multiple meshes within a GLB

[jaspreetdhanjan]

Here is a GLB file loaded into Unity:

And here is the same GLB loaded using Pyrender/trimesh

This is just an example, I know these are different frameworks. However, how can I preserve the pose of each object within the scene-graph so that my cube is in the correct position relative to the plane?

Here is my code:

loaded_payload = trimesh.load(BytesIO(payload), file_type='glb') mesh = Mesh.from_trimesh(list(loaded_payload.geometry.values())) self.scene.add(mesh)

[mikedh]

Hey, I'm not sure of the details on this, but geometry.values is untransformed geometry. You can either try from_trimesh_scene:

In [1]: import trimesh

In [2]: s = trimesh.load('models/CesiumMilkTruck.glb')

In [3]: s.show()
Out[3]: SceneViewer(width=1800, height=1350)

In [4]: import pyrender

In [6]: p = pyrender.scene.Scene()

In [7]: p.from_trimesh_scene(s)

Or you can "bake" the transforms from the trimesh scene into a list of copied/transformed meshes:

loaded_payload = trimesh.load(BytesIO(payload), file_type='glb') 
mesh = Mesh.from_trimesh(loaded_payload.dump())
self.scene.add(mesh)

[jaspreetdhanjan]

Thanks @mikedh. Your solution worked great. I guess I misinterpreted the doc; would be great to get a few more examples up on the repo!

[jaspreetdhanjan]

Hi @mikedh do you have an email or a way to contact you? I have some questions about your trimesh package

[jaspreetdhanjan]

@mikedh I just wanted to ask if I am able to get the name of a node from the GLB file using your API...