I want to create an orthographic drawing where the walls are simply painted depending on their orientation, like this:
This would seem simple enough, except of course I have to automate this task to make it bearable. Ideally I would not do this for the hundreds of buildings on my site, and additionally it would be nice to have this process ready for the next time I have to do something like this.
I have had some luck with rhino - someone wrote me a grasshopper script that separated all of the surfaces by their orientation, meaning that I have three layers, one for the roof, west facing, and south facing walls.
However, my issue is that these layers do not stack properly. No matter whether I put the south, or west facing walls on top of each other, there is still some incorrect looking overlap.
I am pretty stuck here. How can I automate this process? I am looking at processes in Rhino or in Illustrator.
For reference, here are the rhino and illustrator files.