@sammysleeth
You should use the tool in the TripleA program. It works pretty well. But you will need to have an all black and white map image PNG, as well as your map’s polygons.txt file. When you got these two files ready, you can make a new placement file.
Do like this:
Open TripleA
Press Engine preferences
Press Run the Map Creator
Press Step 2: Map Utilities
Press Run the Placement picker
Read the text (or maybe take a screenshot so you remember all the instructions) and press OK
Follow the instructions.
Tips1: Remember to save your placement work often. You can always save your work, close down the program and hold a break, and then return to your placement work later by loading the placement file.
Tip2: You can play around with the three settings in the “Edit” menu of the window. At one point these options lead to errors and program freezing, but I don’t know if this is still the case. If you encounter an error that freezes the work you are doing, just don’t do the exact same thing again. Trial and error 😉