Indicates whether a loading process is running
Cancels any pending load and terminates all workers owned by this loader.
Set the ImportController to use during the loading process
Starts loading the file requests into the scene.
A promise that resolves when the loading process finishes or is stopped.
Stops current loading process
Loads 3D files into the viewer's scene: queues File3DRequests, dispatches them to the file-loading and geometry-batching web workers, and inserts the resulting meshes into the scene graph in parent/child order as they become available.