Ger <ger### [at] NoSpamthankyou> wrote:
> On 08/19/2013 02:03 PM, Anthony D. Baye wrote:
> >
> > I think I may have spotted the reason why your planet is so turbulent.
> >
> > You seem to be generating a new displacement for each point in the sphere
> > individually rather than displacing all the points on one side of the plane by
> > the same amount.
> >
>
> Nope, all points outside of the plane are lifted, all points inside the
> plane are lowered.
> This becomes very obvious if you look at images with < 10 iterations.
>
>
> > you should have your displacement macro generate two scaling factors before
> > iterating through the points: One factor for the positive side of the plane, and
> > one for the negative side.
> >
>
> I don't generate any scaling factors. It is hard coded at 1.001.
>
>
> > Regards,
> > A.D.B.
> >
> >
>
>
> --
> Cheers
> Ger

I see now.  I was looking at the wrong part.

What I did was generate a random scaling factor between -0.025 and 0.025 for
each side, then scaled one side by 1+factor1 and the other side by 1-factor2

like so:

#declare factor1 = 0.025*Rand_Gauss(0.0, 0.33, RdmA);
#declare factor2 = 0.025*Rand_Gauss(0.0, 0.33, RdmB);

Regards,
A.D.B.

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