POV-Ray : Documentation : 2.4.1 Finite Solid Primitives
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2.4 Objects Blob

2.4.1 Finite Solid Primitives

There are fourteen different solid finite primitive shapes: blob, box, cone, cylinder, height field, Julia fractal, lathe, prism, sphere, spheresweep, superellipsoid, surface of revolution, text object and torus. These have a well-defined inside and can be used in CSG (see section "Constructive Solid Geometry"). They are finite and respond to automatic bounding. You may specify an interior for these objects.

2.4 Objects Blob

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