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Am 22.08.2013 20:04, schrieb posfan12:
> Are there parametric equivalents to the implicit metaball functions found here:
>
>
http://www.geogebra.org/en/upload/files/english/Michael_Horvath/Metaballs/geogebra_metaballs.htm
For the special case of two elements, there most certainly /are/
parametric representations; for instance, assuming the elements are both
centered on the X axis, the following mapping will obviously work for
all cases where the surface in question is contiguous and the shape has
a circular y/z cross-section for every x:
u = x
sin(v) / cos(v) = y / z
(As a matter of fact it will work for plenty cases with non-circular
cross-sections as well.)
Solving for (x,y,z) for a given field strength may be non-trivial though.
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