<<VRML 2.0 - An Introductory view by examples

Cone

[geometries' example]                                          [run]
It defines a cone which is centered in the local coordinate system and whose central axis is aligned with the local Y-axis.

{
field SFFloat bottomRadius 1 # radius of base
field SFFloat height 2
field SFBool side TRUE # specify whether side surface is created
field SFBool bottom TRUE # specify whether bottom cap is created
}

It is used as a node inside a Shape node. 

  Shape{
        geometry Cone{bottomRadius 2
                      height 1       }
        }