I just tried some of the Forge boilerplates on Github.
Some examples asked me to login to BIM 360 to fetch some model data. I was wondering if it would be possible to load the (Revit) models from Dropbox, Google Drive or OneDrive, or even upload them from the local storage?
PS: Forge is awesome, kudos to Forge Team!
We have multiple examples that illustrate how to integrate Forge with cloud storage providers under the same github org:model.derivative-nodejs-box.viewer, data.management-nodejs-integration.box, model.derivative-nodejs-google.drive.viewer
The point of using 3-legged API is precisely to let your app access customer data that is already hosted on Autodesk Cloud. If you want use a storage mechanism that is specific to your app, then you need to use 2-legged Object Storage Service, see Create an App-Managed Bucket and Upload a File
In order to fire a translation on a CAD file, you have to upload your data to Autodesk Cloud first, you can then load it from there in the viewer. However you could also download the svf package using the API and then serve those as static resources from your own server. Take a look at this sample for more info: extract.autodesk.io.
Hope that helps