I have a Linux desktop that I often use for online conferencing. In conferences I need to field questions, often aided by drawing diagrams. Up to now I've been doing this with a Wacom writing pad, but being unable to write directly on the screen makes drawings ugly. I recently ordered an iPad Pro to real-time share diagrams, interfaced through some kind of web application to make and share them (BitPaper, Ziteboard, ScribbleTogether, Scribblar).
However, it occurs to me that perhaps it could be even better if the iPad could show the computer's display and I could write onto the iPad to control the mouse on the computer. I think I'd still be relying on a web application to make and real-time share the drawings. But it might be easier to sync files if I need to copy-paste text or pictures stored on the desktop into the shared drawing.
So is it possible to use the iPad as a pen input to a Linux computer (where the iPad is also showing the computer's display)? Or are there iPad apps that would facilitate this kind of conferencing in some other way?