Vogel Op Art 2

Agent[] agents;

​

int  numAgents = 100;

int a = 1;

float theta = 0;

PVector center, vertex;

​

void setup() {

  size(650,650);

  colorMode(HSB,360,100,100,100);

  background(0,0,100,100);

  noStroke();

  fill(0,0,0,50);

  center = new PVector( width/2.0, height/2.0);

  float radius = width/20.0;

  float scale = width/25.0;

  agents= new Agent[numAgents];

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

    vertex = goldenPoint(i+1);

    vertex.mult(scale);

    vertex.add(center);

    agents[i] = new Agent(vertex.x,vertex.y,2*PI*i/float(numAgents) ,radius);

  }

}

​

void draw() {

   background(0,0,100);

​

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

     agents[i].display();

     agents[i].evolve(0.02);

   }

}

​

PVector goldenPoint(int n){

  float theta = 2.39996*n;

  float r=sqrt(n);

  return new PVector(r*sin(theta),r*cos(theta));

}

​

class Agent {

  float x, y, agentTime;

  float radius,d1,d2;

  Agent() {

    x=1;

    y=1;

    radius=10;

  }

  Agent(float x_pos, float y_pos,float t,float r) {

    x = x_pos;

    y = y_pos;

    agentTime=t;

    radius=r;

    d1 = radius*sin(t);

    d2 = radius*cos(t);

  }

  void evolve(float dt) {

    agentTime += dt;

    d1 = radius*sin(agentTime);

    d2 = 2.618*radius*sin(agentTime);

    //  x = x + p_x;

    //  y = y + p_y;

  }

​

  void display() {

    noStroke();

    h = 60*sin(agentTime);

    fill(240 + h ,100,70,100);

    rect(x-0.5*d1,y-0.5*d1,d1,d1);

    //ellipse(x,y,d1,d1);

    stroke(280+h,50,100,100);

    noFill();

    //ellipse(x,y,d2,d2);

    rect(x-0.5*d2,y-0.5*d2,d2,d2);

  }

}