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Welcome to Fractal Forums > Fractal Software > Programming > Fragmentarium > Fractal + Change of domain mashup
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Author Topic: Fractal + Change of domain mashup  (Read 5241 times)
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SCORPION
Conqueror
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Posts: 104
« Reply #15 on: December 28, 2013, 05:02:53 AM »
This option turned out to Mandelbulb:

Code:
uniform vec3 InvertC; slider[(-5,-5,-5),(0,0,0),(5,5,5)]

vec3 domainMap(vec3 c)
{
  float s = dot(c,c);
  return c=s * InvertC;
}


Code:
  if (i<ColorIterations) orbitTrap = min(orbitTrap, abs(vec4(domainMap(pos),r*r)));

* proba domian map.jpg (235.96 KB, 749x489 - viewed 359 times.)
* proba domian map.frag (4.95 KB - downloaded 138 times.)
« Last Edit: December 28, 2013, 05:11:57 AM by SCORPION » Logged
Roquen
Iterator
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Posts: 180
« Reply #16 on: January 06, 2014, 11:05:57 AM »
It's probably worth pointing out that if you're using some change of domain function for something other than geometry then it opens up a wider class of functions since you no longer need them to be locally continuous.  In fact those that are not can be pretty interesting since you can get "strata/banding" and reaction-diffusion (to name a couple) like effects in (as in the previous example) it's being used as a coloring function.
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Roquen
Iterator
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Posts: 180
« Reply #17 on: August 29, 2014, 12:01:11 PM »
Logistic's map

Code:
vec2 domainMap(vec2 c)
{
  //c = 0.5*c;             // only effects resulting scale
  c = zpow2(c) - c;      // give the domain two zeros
  c   +=K ;
  return c;
}

http://glslsandbox.com/e#19502.1
« Last Edit: February 19, 2016, 02:08:48 PM by Roquen » Logged
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3dickulus
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Posts: 1558



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« Reply #18 on: March 06, 2016, 11:50:36 PM »
just noticed the new post (better late than never)
when I get some time to play with GLSL I will be exploring the effect in 3D

ty Roquen, for another little toy/tool  A Beer Cup
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You will be illuminated!

                            #B^] https://en.wikibooks.org/wiki/Fractals/fragmentarium
3dickulus
Global Moderator
Fractal Senior
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Posts: 1558



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« Reply #19 on: March 07, 2016, 01:00:25 AM »
modified for 3D, frag attached...

* Roquens-Logistic_map-mandelbulb.jpg (61.13 KB, 480x480 - viewed 163 times.)

* Roquens-Logistic_map-juliabulb.jpg (64.17 KB, 480x480 - viewed 172 times.)
* LogisticBulb.frag (5.42 KB - downloaded 74 times.)
Logged
Resistance is fertile...
You will be illuminated!

                            #B^] https://en.wikibooks.org/wiki/Fractals/fragmentarium
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