I wanted to remove foliage in a heavy forested area, but I also wanted to do it with more control than just a single logic, so I came up with a way to use area markers to visually identify areas I wanted to defoliate. Since this thread helped a lot, I wanted to share back how I modified the idea.
https://gist.github.com/coldnebo/ec1ff71a42fffa91def88e8aba2b66b2