END OF AN ERA, FRACTALFORUMS.COM IS CONTINUED ON FRACTALFORUMS.ORG

IFS tessellation samples (two trees and two dragons)

The noise on the outside can be reduced with a higher "Min. iterations" count, i used 12 (normally you choose a value below the average count in the statistics menu, but 12 seems to work ok here).
A problem are the cut surfaces, if everything fails you try the "Normals on Zbuffer" function in the postprocessings.  Did this in attached pic.

I changed some other parameters for a faster rendering on my laptop, you can change them again:

Mandelbulb3Dv16{
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................/ME/A....6Ey....v/...2E2.....o5XMjrPkhqD/..........c./...w1....U
z.EnAnYD..../..........wz........................................y1...sD...../..
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ZxvAp/VTL2LFzebnvhF5xypj......2U0.....................sD.2kz....................
..............................LRQ8.0qld.UO5b0UnRQ8.orld.cV5b0.ESQ8..............
.....................UbUl/../...Y/...Q9...EB....v2...UB..../....p....A3q...hK126
..kRq....UrLIFXUaDyrlxzzzr9.mc..veOH.EgI7TMmL4.k5Got8VlJaz1...........KA8sDJEZ2.
lZRyz7VtazXpfjrwdvgezytmXynAV..k2QUAvrhqD/E4M7gjlVctzmImmBDuCOyjQwYnEnvOaz9E1c..
NaNk.UF92FpyVY.koZmc.R.pnz9..........2U.8.kzzzD.................................
/6U0.wzzz1...................................wdVU/......6fmmwq8.2Zri.AMJp3JC.A3O
00k4yN7Vd/......XtrW6G5......ceT9W6R......Uwyh6Wo/......uwrW6G5......2sT9W6R....
..Umzh6Wo/........kW6G5.eeGqFz7.IJ3SJN1.wyrW6G5..s4RZ7rPXFb9e/rN.616oJqQoJX9e/rN
E....6....E.....I....Y....kL7NoITFLNnB5.rJaQ..................................U.
0..................................................wz........UzD........kz1.....
.............E2E........6.2.....................................................
.....................2.....3....5....oINiRKNmZYFH/EG4B3.........................
.....MU/4....................U.E........kz1........wz.........yD................
..........................................................2........wz...........
................................}

 

This is a problem of many formulas or hybrids, a conditional change in the vector that does not confirm some rules, can introduce steps in the DE function.*  Maybe some rendering methods can handle this better, but i am not that mathematic genius.
 
*add: for example the formula should take care that two nearby points stays in nearly the same distance after one iteration (just following the normal scaling function of the formula).  So you can do a conditional folding savely, if the folding point stays connected.  On the other hand, if the point without folding and a nearby point with folding disappeared from each other after that iteration, the distance estimate would be very low (with a DE based on the vectorlength gradient), creating a noise pixel at that folding plane.  That should be the main problem in this case.

I am testing something new with the new coord programmable transformation, that gives a great number of variations of Mandelbulb, too bad power 2 is shitty but higher powers with small percentages of stuff look interesting (unstable and slow, but interesting... ).

Mandelbulb3Dv16{
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................................DmFCqUFYH.2........A./..................y.2.....
.................MU0A....6E91...l/....E2......T67ZKn7roD/..........c./...w1....U
z.EnAnYD..../..........wz........................................y1...sD...../..
.wHnAnYDHwKmapQmBx1..........gzOJie1bVbjjxkOHICEltXuMq0i91FFzwLe42uhDIoDyYEJyQQE
ltnjnfgcryEFz8sBdNvmEIoD......oC0.....................sD..kz0...................
..............................LRR4.0qpN.UOLb/UnRR4.orpN.cVLb/.ESR4..............
.....................wzzz1.U..6.P....M4...EB....W....61....F....8/...I1....UJl22
...U.iVFwxDE./ozPM2Tzz7lz16.mc..zXCc.El18XGQeGyDjvIRhrVAkz1............28.kFrA0.
FWb96aAIVzvh1se7Umvxz0........../6U0.wzzz1................................E.0c..
zzzz.................................2U.8.kzzzD.................................
/6U0.wzzz1...................................2CcN/UvNP6.eeWCNq0.yRii.EJJUk1f..XR
S1.mx3CcN/UvNP6.QsLsUa3.ibhV..bTV1OK.sSq40.ly3CcN/UvNP6.MwLsUa3.ibhV.kqTV1OK.sSq
40.kz3CcN/UvNP6...EsUa3.eeWCNq0.IJ36wk8.wyLsUa3.................................
E....6....E.....I....Q....kLXxqPmFaRn/rPr/UQ.........................6..06U.06..
..................EK./......../E.............................Y2k................
..EC.1..........................................................................
.....................2.....3....1....wJMYFqE....................................
..............................zD........kz1........wz...........................
................................................................................
................................}

FEEDBACK NEEDED

Hemmm thankies! :-D
I am wondering about a poly formula with terms from z8 to the constant.
It would be absolutely interesting, also adding mixed z_c terms but dunno if there are enough rooms for the vars

This problem may or may not have been absolved yet, but I took a crack at it and got rid of a lot the noise.
I hope this helps

Mandelbulb3Dv16{
N.....Y/...g2...M7.........fRcxh6xW4.PO/KLWccm4EAGX1PdS4tznfcb2h.Ybxz0rMubWqRRyj
................................a4gi4ZH/az1........Y./..................C/2.....
................/QE1A....6UQ4...p/...2E......Y2eoi5I1zpD/QE4KJxD...60/...w1.BnAH
z.EnAnQD..../2...................................................y1...sD...../..
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ixXlfV6HWVoQzCpGoKiLJAqj......Is3...80................sD.AE.....................
..............................LRL9.0qRh.UOrp0UnRL9.orRh.cVrp0.ESL9..............
.....................wzzz1.U..6......E2...EB.........E1...EE....4/...IH....UJn22
...U.yzz.wD...kzzzzzz1Ak.P22/c..sbhY.Q6Fbf24LNyjYA72QifFjz1...........EA8.klLS4.
QvM93P58izPZKWugHVQxz0...........2X0.wzzz1.xk4smd5DxzY3yFGmnCfyD..........E.0c..
zzzz.................................2U.8.kzzzD.................................
/6U0.wzzz1....................................6....U./..XIXtn/...1Ak.6yJzzD..caO
J0kCy/2....U./...urpf/...02..sfT.0....6E..Uzy/6....U./..7xrzz1...02..MsT.0....6E
..kmz/2....U./.....U.06.eeG8dY0.IJpzzzD.wy5U.06..IbPbJqPitWOkR4.................
E.../6....E.....I....Y....kL7NoITFLNnB5.n/UQ..................................U.
0..................................................wz........UzD........kz1.....
.............E0E........kz1.....................................................
.....................I.....3....5....oINiRKNmZYFH/..7NoI........................
.....MU/4MU/4................U.E........kz1........wz.........yD................
........................................................Uz1........sz0..........
................................}

Sample render. The main problem of Exp() is that tends to introduce some "ghost structures" and disconnected islands, that sometimes doesn't look good

(the branch discontinuity is due to cylindric distortion)


Mandelbulb3Dv16{
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................................OaNaNaNadz1........A./.........E........y.2.....
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z.EnAnQD...E/.UaNaNaNaNmzeNaNaNaNavD.............................y1...sD...../..
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.......................E......LRR4.0qpN.UOLb/UnRR4.orpN.cVLb/.ESR4..............
................Q0...wzzz1.U..6.P/...61...kA....I....U3...E5....i....I1...UESloX
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QvM93P58iz9GMmnWK2zwz0........../.V0.sXTL0U3SQcDqMitz07BQKxV62zD..........E.0c..
zzzz.................................2U.8.kzzzD.................................
/6U0.wzzz1....................................uBZ.EHVM/.zzFoTu2.cxo7.szDnueM.g5P
D/EzTt6Ul/kF.V1.Qs5crI0.B3W3..bTUSH7.oI6K..ly/uBZ.EHVM/.Mw5crI0.B3W3.kqTUSH7.oI6
K..kz/uBZ.EHVM/....crI0.zzFoTu2.yzngi84.xzZX.45.................................
E.E..6....U.....I....Q....kLXxqPmFaRn/rPr/...........................6..06U.06..
..................EK./......../E........o.2.....................................
...B.1..........................................................................
.....................2.....3....1....wJMYFqE.Q467t4RU.pPr/......................
..............................zD........kz1........wz...........................
................................................................................
................................}