registerSchemas static method
Registers the 3-D components into context, so scenes holding them
load and save — for tools that read and write 3-D scenes without
drawing them. Giving the engine a Graphics3D does this already.
Implementation
static void registerSchemas(EngineContext context) {
context.definitions
..registerAll(GraphicsSchemas.all, ifAbsent: true)
..registerAll(ShapeSchemas.all, ifAbsent: true);
_registerPlayback(context);
}