I thought I’d share this simple application I’ve built to test glTF models and their orientation: https://github.com/virtualgis/gltfviewer
Models are read via HTML5 File API, so it’s fast. No files are ever uploaded to a server.
While I’m at it, is there a way to override the glTF shaders in Cesium (or add more lights to the scene)? Currently the models are not evenly lit. See the bottom right part of the duck model: https://cloud.githubusercontent.com/assets/1951843/25558026/4e9f3404-2cec-11e7-8210-0d9931f6856a.png