A test to drive the smoke (or pyro sim) into a volumetric representation of an arbitrary shape with custom forces.
Also the main forces are properly weighted with the main velocity field (to preserve the default flow of the solver); And finally the main forces are controlled by a ramp relative to the distance from the goal shape.

Two Main forces:

1) Gradient force (calculated with a volume representation of the object [gas analysis DOP or volume analysis SOP]).
2) Tangent force (derived from surface tangents)

Shaded with Pyro (the colorization is based on the shadow color parameter).

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