Here is the triangle filler that I have been working on. Drag the brown edges of the triangle, then hit the green flag again. You can adjust some settings at the top. The "yres" and "xres" are the resolutions. A higher one means it goes faster, but it is less detailed and runs a higher chance of it filling outside the triangle. A lower one gives better detail, but takes much longer to fill. I kinda need help, so if you think you can tackle it, download it and look at the source. I already think I know one way to fix part of it, but I want to know about other fixes first.