Generative Art #140

Code

ArrayList<Particle> particles;
int num = 200;
//int[] colors = {#58355e ,#e03616 ,#fff689 ,#cfffb0 ,#5998c5};
int[] colors = {#ed9e1e ,#d13247 ,#00c6e5 ,#4ea3e8 ,#00a1f2};

void setup() {
 size(900, 900);
 pixelDensity(2);
 colorMode(HSB, 360, 100, 100, 100);
 newParticles();
}

void draw() {
 for (Particle p : particles) {
   p.run();
 }
}

void tile(){
 int count = 20;
 float w = width/count;
 
 noFill();
 strokeWeight(0.5);
 stroke(0);
 
 for(int j = 0; j < count; j++){
  for(int i = 0; i < count; i++){
    rect(i*w, j*w, w, w);
  }
 }
}

void newParticles(){
 background(#ffffff);
 tile();
 particles = new ArrayList<Particle>();
 for (int i = 0; i < num; i ++) {
   particles.add(new Particle());
 }
}

void mousePressed() {
 //redraw();
 noiseSeed((int)random(100000));
 newParticles();
}

void keyPressed() {
 if (key == 's')saveFrame("####.png");
}

int getCol() {
 return colors[(int)random(colors.length)];
}

class Particle {
 PVector pos;
 float step, tStep;
 float s, t;
 color c1, c2;
 color col, alph;
 float angle;
 float noiseScale, noiseStrength, noiseZ;
 Particle() {
   pos = new PVector(random(width), random(height));
   step = random(0.5, 2);
   tStep = random(0.1);
   s = 10;
   t = random(10);
   c1 = getCol();
   c2 = getCol();
   alph = 20;
   noiseScale = 750;
   noiseStrength = 50;
   noiseZ = 0;
 }

 void show() {
   noStroke();
   fill(col, alph);
   circle(pos.x, pos.y, map(sin(t), -1, 1, 0, 1) * s);
 }

 void move() {
   angle = noise(pos.x/noiseScale, pos.y/noiseScale, noiseZ) * noiseStrength;
   pos.x += cos(angle) * step;
   pos.y += sin(angle) * step;
   noiseZ += 0.001;
   t += tStep;
   col = lerpColor(c1, c2, map(sin(t), -1, 1, 0, 1));
 }

 void run() {
   show();
   move();
 }
}

パーティクルが大きさと色を変えながらパーリンノイズ の軌跡を取る。

Happy coding!