You can see from their sample code that the .dae
files are exported using version 1.4.1
of Collada.
<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">
A static model is quite straightforward from there, but an animation is just impossible using Cinema 4D (or at least I didn't find a way).
The infuriating thing is that their own animation model was created on... a PC, using 3ds Max.
<authoring_tool>OpenCOLLADA for 3ds Max; Version: 1.2.5; Revision: 673; Platform: Win32; Configuration: Release Max2010</authoring_tool>
If anyone finds a way to export C4D animations to .dae that can be previewed on Mac and used in SceneKit, I'm interested !