http://www.richardwheeler.net/interactive/pixeltool.html has a javscript based drawing tool for handdrawn trains using voxels. it works amazingly well.
More is here: http://www.tt-forums.net/viewtopic.php?f=26&t=69974
Somebody just has to hack it for shorter diagonals ...
Wow, that's awesome.
Looks like you can only do box-like things, though - I tried to modify one of the examples into a truck with a hood and windshield away from the front, and I don't think it caught what I was trying to do. hehe. Or maybe I did it wrong.
Either way, that's awesome.
I'm playing with it and it is amazing. Thank you for sharing!
Even with worst case, diagonals can be edited manually...
it took me 2minutes...
(http://s3.postimg.org/5zx6bp2db/Untitled2.jpg) (http://postimg.org/image/5zx6bp2db/)