Cubetube - Its hip to be cube

Flame

Created by hwang.al on May 25, 2015

Uses Perlin Noise to distort a sphere into a flame.

Comments:

3dLEDpixelArt said

your doing some really good pixel art, very abstract, nice use of a few groups of colors! Can't wait to see what else you come up with. Will be on my cube when backer cube arrives!

3dLEDpixelArt said

your doing some really good pixel art, very abstract, nice use of a few groups of colors! Can't wait to see what else you come up with. Will be on my cube when backer cube arrives!

3dLEDpixelArt said

your doing some really good pixel art, very abstract, nice use of a few groups of colors! Can't wait to see what else you come up with. Will be on my cube when backer cube arrives!

3dLEDpixelArt said

your doing some really good pixel art, very abstract, nice use of a few groups of colors! Can't wait to see what else you come up with. Will be on my cube when backer cube arrives!

3dLEDpixelArt said

wow button didn't respond then it posted 4 times! someone can delete the three extra posts and this one when they get a chance, thanks

derekbell said

it needed to be said that many times haha this flame app is so awesome!!!

Update Demo

Cube cube;
color col;
PVector[][][] voxels;
PVector sphereCenter = new PVector(3.5, 3.5, 3.5);
float sphereRadius = 1;
float aliasAmount;


void setup()
{
  cube=new Cube(this);
  voxels = new PVector[8][8][8];
    aliasAmount = .75;

  for (int i = 0; i < 8; i++) {
    for (int j = 0; j < 8; j++) {
      for (int k = 0; k < 8; k++) {
        voxels[i][j][k] = new PVector(i, j, k);
      }
    }
  }
}

void draw()
{
  for (int i = 0; i < 8; i++) {
    for (int j = 0; j < 8; j++) {
      for (int k = 0; k < 8; k++) {
        float myDist = sdSphere(voxels[i][j][k], sphereRadius);
        float redVal = map(myDist, 1, 2, 255, 0);
        float greenVal = map(myDist, 0, 1, 255, 0);
        redVal = smoothstep(0, 255, redVal);
        greenVal = smoothstep(0, 255, greenVal);
        cube.setVoxel(voxels[i][j][k], color(redVal, greenVal, 0));
      }
    }
  }
  cube.draw();
}

/* Lots of notes came frm this guy:
http://www.iquilezles.org/www/articles/distfunctions/distfunctions.htm

And some shadertoy stuff
*/
float sdSphere(PVector p, float radius) {
  float t = - (float) millis() / 1000;
  PVector fbmSeed = PVector.mult(p, .2);
  fbmSeed.add(t, t, t);
  float noisyVal = noise(fbmSeed.x, fbmSeed.y, fbmSeed.z) * 20;
  PVector noisyVec = new PVector(noisyVal, noisyVal, noisyVal);
  PVector p2 = p.get();
  p2.add(noisyVec);
  p2.sub(9,9,9);
  return p2.dist(sphereCenter) - radius;
}

float smoothstep(float minV, float maxV, float variance) {
  float lin = max(0,min(1,(variance-minV)/(maxV-minV)));
  return minV + lin*lin*(3-2*lin) * (maxV - minV);
}