Shell Shape Generator Programs
A basic Shell Shape Generator Software.
you can see how to make various shell shapes in a youtube video.
shell shape generator
this version can change the shape of the opening of the shell.
Nipponites mirabilis generator
you can change the twisting angle periodically, which allow you possible to generate the beautiful odd coiled ammonite, Nipponites mirabilis.
a video showing how this soft operates is here.