DistMap 5 Sin(RectDistSum)

float[] sX,sY,dX,dY;

float d,z;

int n;

color c;

​

void setup() {

  size(400,400);

  setS();

}

​

void setS() {

  n  = round(random(1,5));

  z  = random(0.02,0.2);

  sX = new float[n];sY = new float[n];

  dX = new float[n];dY = new float[n];

  for(int i=0;i<n;i++){

    sX[i] = random(width);sY[i] = random(height);

    dX[i] = random(-1,1);dY[i] = random(-1,1);

  }

}

​

void draw() {

  for(int i=0;i<n;i++) {

    sX[i]+=dX[i];

    sY[i]+=dY[i];

    if(sX[i]<0||sX[i]>width) {dX[i]*=-1;}

    if(sY[i]<0||sY[i]>height) {dY[i]*=-1;}

  }

  loadPixels();

  for(int x=0;x<width;x++) {

    for(int y=0;y<height;y++) {

      d       = 0.0;

      for(int s=0;s<n;s++) {

        d += (abs(sX[s]-x)+abs(sY[s]-y))*z;

      }

      d = sin(d);

      if(d<0) {c = color(0);} else {c = color(d*255);}

      pixels[y*width+x]=c;

    }

  }

  updatePixels();

}

​

void keyPressed() {

  setS();

}

​

​