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Welcome to Fractal Forums > Fractal Art > Images Showcase (Rate My Fractal) > Mandelbox tree
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Author Topic: Mandelbox tree  (Read 886 times)
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Alef
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« on: March 21, 2012, 07:45:26 PM »
Tried to implement mandelbox formula. IMHO, something went wrong.

And used direct colouring exponent smoothing. At least it is not wrong.
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Alef
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« Reply #1 on: March 21, 2012, 07:50:36 PM »
Is this correct code for mandelbox?
Quote
//boxfold
if (zx > check)
{
zx=Fold - zx;
}
else if (zx < -check)
{
zx=0-Fold-zx;
}

if (zy > check)
{
zy=Fold - zy;
}
else if (zy <-check)
{
zy=0-Fold-zy;
}

if (zy > check)
{
zy=Fold - zy;
}
else if (zy <-check)
{
zy=0-Fold-zy;
}

//spherefold
radius =sqr(zx) + sqr(zy) + sqr(zz);

if (radius < sqr(Min_R) )
{
temp = (Max_R)/sqr(Min_R);
}
else if (radius < (Max_R) && radius !=0)
{
temp = (Max_R)/(radius);
}
else
{
temp = (Max_R);
}

zx = Scale*zx * temp + Cx;
zy = Scale*zy * temp + Cy;
zz = Scale*zz * temp + Cz;

Mandelbulb3D have in description of mandelbox have this code, but it seems not to work. Why?
Quote
/*
zx = abs(zx+Fold) - abs(zx-Fold) -zx;
zy = abs(zy+Fold) - abs(zy-Fold) -zy;
zz = abs(zz+Fold) - abs(zz-Fold) -zz;*/
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cKleinhuis
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formerly known as 'Trifox'


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« Reply #2 on: March 21, 2012, 08:17:13 PM »
have you checked this?
http://sites.google.com/site/mandelbox/

i have implemented it - in 2d in uf, but ... it works ... - and it is a good source for parameters, and the actual code...
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---

divide and conquer - iterate and rule - chaos is No random!
Jesse
Download Section
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Posts: 1013
« Reply #3 on: March 21, 2012, 09:27:24 PM »
Quote from: Asdam on March 21, 2012, 07:50:36 PM
Mandelbulb3D have in description of mandelbox have this code, but it seems not to work. Why?

You have to use fabs, i usually write in pascal and abs is used for floats too.
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fractower
Iterator
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Posts: 173
« Reply #4 on: March 22, 2012, 04:09:40 AM »
I think the problem is in the final step of the spherical fold

{
temp = (Max_R);
}

should probably be

{
temp = 1.0;
}

Though it would be a shame to fix it.
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eiffie
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« Reply #5 on: March 22, 2012, 04:42:42 PM »
Also you have the box fold on zy twice.
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Alef
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« Reply #6 on: March 25, 2012, 07:59:59 PM »
Quote from: eiffie on March 22, 2012, 04:42:42 PM
Also you have the box fold on zy twice.

Wow. Didn't noticed such eee  embarrass error. Thought it would be something smart. Thanks Eiffie. Spherefold will to be ordinary if Max_R=1. This were intentional modification in some code, throught pretty useless one.
Fabs are same as Ultra Fractal Cabs?

Mandelbox fractals made by this error was pretty nice. So I will keep it as switchable feature;)
« Last Edit: March 25, 2012, 08:59:59 PM by Asdam » Logged
fractal catalisator
Alef
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Posts: 1174



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« Reply #7 on: March 25, 2012, 08:55:44 PM »
Here are some error mandelboxes.

Julia set, but with some additions. Probably an exponent smoothing created this kaliset pattern.


Mandelbrot set with the same variation.


Mandelbrot set with round function implemented.
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fractal catalisator
Alef
Fractal Supremo
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Posts: 1174



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« Reply #8 on: March 31, 2012, 07:38:13 PM »
Another pic gone devious.
Mandelbox / amazingbox + unit vector addition and positive real factor a bitt naturalised hi-tech fractal.


Here is another:
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fractal catalisator
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