Show HN: Roofmapper, simple way to map roofs. My first webapp

Yeah, I probably should have gave it a bit of explanation.

This was actually made for my dad. He is a roofer and needed a quick and dirty way of generating a map of a place. The map can then be printed and to mark locations of leaks and other such information. Getting screenshot straight from google maps etc. was one option, but I feel that my way makes it cleaner and easier to pinpoint exact locations.