Here is ABoxSmoothFold2. Just copy and paste to notepad and save as ABoxSmoothFold2.m3f

[OPTIONS]

.Version = 4

.DEscale = .2

.DEoption = 11

.RStop = 1024

.SIpower = 2

.Double Scale = -2

.Boxscale Min R = 0.5

.Double Fold = .5

.Double Scale vary = 0

.Integer Sharpness (Integer) = 3

[CONSTANTS]

Double = .5

558BEC81EC400000005356578B75088B

7E308BD881C680000000D9D0EB539090

908B47CC48DD55D0DC4DD04883F8007F

F7C3D9E4DFE0D0EC7207D9E8D95DECEB

06D9E8D9E0EBF5D9E1D9C0E8D1FFFFFF

D9C9DD47D8D8C0D8E1D8CAD8C1D9CAD9

E8DEC1D9CAD8F2D84DECD9CADDD8DDD8

C3DD03E8BAFFFFFFDD13DD02E8B1FFFF

FFDD12DD01E8A8FFFFFFDD11D9D0837E

50007F09FF4650DD47F0DD5E48DD4648

D9E8D9C1D9E1DEE1DC4FD0DEC1DD5E48

90DD03D8C8DD02D8C8DD01D8C8DEC1DE

C190D9E8DC47E0DC0F90DD5DF0D9E8DC

67E0DC0F90DD5DE890DC65F0D9E4DFE0

D0EC7207D9E8D95DE4EB06D9E8D9E0EB

F5D9E1DC75E8DD55DCE823FFFFFFDD5D

D490DD45DCDC45D490D9E890DC45D4DE

F9D84DE4DC4DE8DC45F090DD4648DEF1

DD4108D8C990DD590890DCCBDCCADEC9

DC46A8DD19DC46A0DD1ADC4698DD1BD9

D08BC35F5E5B8BE55DC20800

[END]

WARNING! If you use very high sharpness, I don't know what will happen (it may become

extremely slow)... But it has no sense

An Amazing Box, with Folding function modified as follows (x is each spatial coord);

xp = x**p; (fast int pow)

u=sgn(x)*xp;

x=x+xp*(2*Fold-x);

x=x/u;

Also radius folding is smooth (beware! don't use minr = 1 or out of range 0-1 !!!);

m=(1+minr)/2; n=(1-minr)/2; r1=(r-m)/n; rs=sgn(r1); r1=abs(r1);

rp=r1**p; (fast int pow)

r = rs*((rp+r1)/(rp+1) * n) + m;

This "smoothens" the folding function, replacing the "sawtooth" fold with a smooth curve

Result is very similar to standard ABox but with a bit of detail loss and "curvy" details...

Higher sharpness -> You get closer and closer to standard ABox...

Inspired from an idea of Buddhi @ FractalForums.

Luca GN 2011

I was going to try and tweak one of your pieces (internal combustion engine) but it seems I too am missing this formula. I tried copying and pasting to textedit (i'm on osx) and saving as an .m3f then loading this into mandelbulb3d, but i get the error

'This formula is an old one, only versions 2 to 8 are allowed in this program version'.

I was hoping I had it backed up too, but can't find it anywhere and the '1741' build doesn't seem accessible via downloads section.

Is anyone else able to upload this? Or maybe tell me how to format the code differently so that MDB3d v1.8.9 can load it?