Geomorphs: Bullet

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Definition of surface, in parametric equations:

x(u,v) = v cos(u)
y(u,v) = v sin(u)
z(u,v) = a v2


  • u ranges from 0 to 2, scanning a full circle on the XY-plane
  • v ranges from 0 to 2, scanning the bullet's surface from its tip at the origin to its rim.
  • a is a constant having the value 2.47 in this plot; higher values of a make the bullet sharper.

Ancestor: Disc.

Descendants: Paper Bag, Trash Can, Vase & Spear Head.

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