ex1_7

import java.util.Random;

int num = 50;
Walker[] w = new Walker[num];
Random generator;

void setup() {
  size(800, 600);
  colorMode(HSB,360,100,100);
  background(#000000);
  for (int i=0; i<num; i++) {
    w[i]= new Walker(i);
  }
  generator = new Random();
}

void draw() {
  for (int i=0; i<num; i++) {
    w[i].step();
    w[i].update();
  }
}

void keyPressed() {
  save(random(12345)+".png");
}
class Walker {

  float x, y, tx, ty;
  color col;
  float rdmCol, tcol;
  float sdC = 15;
  float sz;
  int i;

  Walker(int _i) {
    i = _i;
    tx = random(100);
    ty = random(1000);
    tcol = random(10000);
    rdmCol = random(360);
    sz = 5;
    x = width/2;
    y = height/2;
  }

  void step() {
    /*
     x = map(noise(tx), 0, 1, 0, width);
     y = map(noise(ty), 0, 1, 0, height);

     tx += 0.01;
     ty += 0.01;
     */
    float s = 5;
    float stepsizeX = map(noise(tx), 0, 1, -s, s);
    float stepsizeY = map(noise(ty), 0, 1, -s, s);

    tx += 0.02;
    ty += 0.01;

    x += stepsizeX;
    y += stepsizeY;

    tcol += 0.02;
  }

  void update() {
    //col = color(noise(tcol)*rdmCol, 90, 90);
    //col = color(rdmCol, 90,90);
    fill(#cccccc);
    stroke(#000000,50);
    ellipse(x, y, sz, sz);
  }
}