Hello Igor and Brandon! Thank you so much for your responses.
These options sound like they may be do-able, some more than others. But, Igor, I am not being modest about my coding abilities! Unfortunately.
So, allow me to ask this, if I may: How long would it take a WebGL developer to do what I describe, and what would a range of project cost for such an assignment be?
Alternative to importing a OBJ model, could what I am describing also be done with Google Maps Terrain View of a neighborhood? Google Maps is, I think, a WebGL based app, yes? The "annotations" I would need to add would be values--let's say values 1-10.
As a simple example: a user clicks on the wall of a building and assigns it value 1; then clicks on another surface and assigns it value 7.
The grid imagery surrounding the "model" or Google location map would add those values together to increase in brightness according to the amount of values assigned.
Is this something I could hire someone to do?
Thank you for taking a moment to consider and respond. I appreciate it very much!