Hurrah!
My latest app now loads and previews 3 bitmaps (top, side, and front views).
You can then extrude or crop a each in three-dimensional space!
The resulting mesh of points is output to a file, and with the click of a button you can fly around and through the resulting 3D object. (I used an old OpenGL app I wrote 3 years ago.)
It still needs some work...
A large mesh (100+ million points) can take several minutes, particularly on the deletion passes. I think optimizing my hash table keygen will help a lot, its kinda thrown together right now.
I also need to add triangle painting, then I can get rid of all the interior points.
Right now I am mainly excited because I can finally view the 3D result. I love coding!