ISO 10303-214:2010(E)
A Right_circular_cone is a CSG primitive in the form of a cone that may be truncated. It is defined by an axis, a point on the axis, the semi-angle of the cone, and a distance giving the location in the negative direction along the axis from the point to the base of the cone. In addition, a radius may be provided to define the size of the truncated face; this radius may be zero in order to indicate that there is no truncation but an apex.
A Right_circular_cone is a type of Csg_primitive.
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