"WaveMaster" <nos### [at] yahoocom> wrote:
> The final prove that there are errors in the fractal calculation:
> -----------------------------------------------------------------
>
> First the Source Code:
>
> [...]
>
> The fractal has no rotation. Only a simple translation from outside into the
> fractal. As soon as you come near the shape of the fractal, you have a
> calculation change of the fractal. In the animation, you can see two
> different ellipses which grow. Inside the ellipses you can see, that some
> parts of the fractal are on another position as they were at the begining
> (Outside the shape). The amount of ellipses varies on the angel you hit the
> shape. When the fractal slowly rotates around the y-axis you can see up to 6
> different ellipses they start from a point and grows over the whole
> fractal-image.
>
> Animation Link:
>
>
http://homepage.sunrise.ch/mysunrise/go_huerlimann/PovRay/FractalTest_08_MegaP_001_200.m2v
>
> Can anyone explain this kind of animation effect?
> Is that also a Wheel effect??

Of course it isn't the wheel effect here. I do not know how POV makes the
calculations so I can only guess at the cause, but that looks like an error
in calculations that gets propagated. Try using the "sturm" keyword to
obtain more accurate roots. If the error persists even using sturm, then it
is likely a bug in the code.

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