Re: [ff3d-users] Specifying Initial Conditions

[Stephane Del Pino]

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Dear Carl.

Yes. Absolutely, ff3d can do this. You just have to use "one" functions. For
instance:

function C1 = g*one(sqrt(x^2+y^2+z^2)<1)+f;

will define a function that is g+f in the unit circle, and f outside (where f
and g are functions or constants).

You can also use POV-Ray like definitions:

function C2 = one(<1,0,0>);

will define a function whose value is 1 inside the objects of color <1,0,0>
and 0 outside.

Best regards,
Stephane.
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