Model not working with ScenegraphLayer / SimpleMeshLayer

[charlieforward9]

I have a model that renders perfectly in https://3dviewer.net/ and https://gltf-viewer.donmccurdy.com/ .

I have tried converting it to GLB, GLTF and OBJ with easy success, none of them render, but it does seem like it loads the object in.

I figure this has to do something with the scale or the displacement of the model in space, but no matter how diligently I debug, I cannot locate the model in the deck space. I have tried messsing with getPosition, getScale, and sizeScale to find the model in the deck space but have failed at all approaches.

Any advice on how to debug this further would be appreciated.

Here is a reproduction: https://codepen.io/charlieforward9/pen/mydgwWX

[jacquelinehyphae]

Have you made progress on this?
I am having a similar issue with gltf models - except my model is appearing but the colors are not being applied. Mine also appears correct in the external viewers lissted, and even apperas correct in cesium ion web viewer (where I am uploading and serving the model). When I serve the data (streamed from cesium) it loads all white. I've tried many things as well. I tried using the GLTF loader directly and serving the file locally (tried glb and gltf) as a Scenegraph Layer. Different conversion methods my source file (a .vtu) to gltf - trimesh and computing vertex normals, applying color map, materials, using the vtk export to gltf. I haven't found a solution either.
In some of my attempts to figure this out, I had the same behavior you are seeing (my script loads the dataset, but nothing appears - again, even if it looks alright in external sites). So, try diving deeper to the data with trimesh or other libraries and maybe you will find a fix.

[charlieforward9]

@jacquelinehyphae I believe you need to modify the lighting value here, on my end, I have not resolved it but LLM has proposed I mess with the coordinate space that trimesh is generating it in.

[jacquelinehyphae]

Yes, modifying the lighting was one of the first thing I tried. Unfortunately it did not have an effect.