I am making a cartex for someone, and in the process i figured a nice concept for a tool:
for a nicely continuous cartex across all planes, instead of going out to hunt for basemaps or screwing around till i get the mapping right, i decided to write a program..
it:
*outputs a "texture co?????????rdinate map" which you stick on the car and then you take a screenshot of the part of the car that you want to paint over. (you are advised to paint most of the rest of the image in clean 0, 255, 0 green though to increase quality)
*accepts the unedited (but painted green) screenshot to get its texture co?????????rdinates
*accepts the edited (still painted green) screenshot from which to get the cartex colors
*generates the cartexture completely automatically, BUT until i implement my TGA writer again (lost it in the distant past) you will have to turn the BMP into a TGA/PNG yourself.
This IS actually being coded by me, and the first (low quality so im reworking it) maps have been generated, proving the concept to work...
would anyone be interested in this util (done in a couple hours, possibly with TGA/PNG implemented)