Cesium's converter can't handle properly a COLLADA file with Maya's group node which moved pivot

Hi there.

The other day, I found COLLADA2GLTF converter’s bug and made an issue at https://github.com/KhronosGroup/glTF/issues/551 .

In there, Mr. pjcozzi recommended Cesium’s converter as other solutions.

So I tried Cesium’s converter (http://cesiumjs.org/convertmodel.html) using the same file (group_pivot.dae) at https://github.com/KhronosGroup/glTF/issues/551 .

The result was the same as https://github.com/KhronosGroup/glTF/issues/551.

My GLBoost webgl library showed wrong animation with group_pivot.gltl outputted by Cesium’s converter.


I think The group_pivot.gltl file outputted by Cesium’s converter and Cesium’s converter itself have the same problem at https://github.com/KhronosGroup/glTF/issues/551 .

I would appreciate if you check the problem.

group_pivot.dae (15.9 KB)

group_pivot.mb (155 KB)

Just to follow up here, we’re pretty sure the Cesium converter has the same bug as COLLADA2GLTF - https://github.com/KhronosGroup/glTF/issues/551#issuecomment-201266011