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Seashell Spiral Generator
Raup's mathematical model of mollusk shell morphology — 4 parameters describe all shell shapes
Nautilus
Ammonite
Cone Snail
Tusk Shell
Flat Spiral
Helix
Raup Parameters
W — whorl expansion
2.50
D — aperture distance
0.30
T — translation
0.00
S — shape (ellipse)
1.00
Display
Turns
4.0
Color mode
Shell
Depth
Rainbow
Show outline
Show axis