Reference:Ovus

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An ovus is a shape that looks like an egg. The syntax of the ovus object is:

OVUS:
  ovus {
    Bottom_radius, Top_radius
    [OBJECT_MODIFIERS...] 
    }

Where Bottom_radius is a float value giving the radius of the bottom sphere and Top_radius is a float specifying the radius of the top sphere. The top sphere and the bottom sphere are connected together with a suitably truncated citrus (lemon), that is automatically computed so as to provide the needed continuity to the shape.

RefImgOvus2D.png
  • The center of the top sphere lies on the top of the bottom sphere.
  • The bottom sphere of the ovus is centered at the origin.
  • The top sphere of the ovus lies on the y-axis.

An ovus 2D section

RefImgOvus3D.png

The ovus and it's constituent 3D shapes

Whenever the top radius is bigger than twice the bottom radius, the ovus degenerates into a sphere with an offset center. There are a lot of variations in the shape of the ovus.

Note: According to the ratio of the radius, the pointy part is the smallest radius, but is not always on top!

RefImgDemoOvus.jpg

Evolution of ratio from 0 to 1.95 in 0.15 steps.

Note: See the following MathWorld references for more information about the math behind how the ovus object is constructed.