Normalize bone weights

[emackey]

The CesiumMan sample model came through this converter with apparently non-normalized bone weights. Not sure if COLLADA allows such weights, but it's becoming apparent that glTF does not, and the non-normalized weights are showing up as rendering errors in various frameworks now.

Can this converter normalize these weights automatically?

Spec discussion: KhronosGroup/glTF#1213 (comment)

BabylonJS issue: BabylonJS/Babylon.js#4240

Cesium issue: CesiumGS/cesium#6447

Source COLLADA model: https://github.com/KhronosGroup/glTF-Sample-Models/tree/master/sourceModels/CesiumMan

[lasalvavida]

Seems like it should be reasonably simple to do. Normalize the weights here and this should be resolved.

[akulagrawal]

Hi Sir. I am new to open source and interested to work on this issue. Can I take this up?

[lasalvavida]

Closed by #187.