Metaballs and metaformz
Four variations of metaballs can be generated directly as primitives;
they are the ball, stretched ball, ellipsoid, and stretched ellipsoid
shown below.
Metaformz are metaballs carried to unprecendented extents. That is, the
metaball behavior applied to a large variety of shapes, not just spheres.
Metaformz can be created either directly or as derivative objects and
combined through a constructive geometry grouping structure, to derive
some astounding organic blends of composite objects.
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