void setup(){

  size(800, 600, P2D);
  smooth();
}

void draw(){

  background(255);
  fill(0);
  stroke(0);


  displaySpiral1(175, 200);
  displaySpiral2(500, 350);

}



void displaySpiral1(int a, int b){

  float radius = 20.0;  //starting radius
  int space = 15; //starting space between points
  float rev_space = 20; //difference between radii of revolutions
  int num_revol = 6;
  float inc_ang = 11;
  float circ;
  float cradius = radius;  //radius for calculation, future radius
  float num_points;
  float x = 0;
  float y = 0;

  pushMatrix();
  translate(a,b);

  for (int i=0; i<num_revol; i++){
    cradius +=rev_space;
    circ = (TWO_PI * cradius);          //calulate the circumference
    num_points = floor(circ/space);
    inc_ang = 360/num_points;
    for (int deg = 0; deg < 360; deg +=inc_ang){
      float angle = radians(deg);
      x = (cos(angle) * radius);
      y = (sin(angle) * radius);
      pushMatrix();
      translate (x, y);
      rotate(angle + (PI/2));
      line(0, 0, 10, 10);
      ellipse(0, 0, 5, 5);
      popMatrix();
      float inc = rev_space/num_points;
      radius +=inc;
    }
  }
  popMatrix();
}

void displaySpiral2(int a, int b){

  float radius = 20.0;  //starting radius
  int num_revol = 6;
  float inc_ang = 11;

  float x;
  float y;

  pushMatrix();
  translate(a,b);

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

    for (int deg = 0; deg < 360; deg +=inc_ang){
      float angle = radians(deg);
      x = (cos(angle) * radius);
      y = (sin(angle) * radius);
      pushMatrix();
      translate (x, y);
      rotate(angle + (PI/2));
      line(0, 0, 10, 10);
      ellipse(0, 0, 5, 5);
      popMatrix();
      radius +=1;
    }
  }
  popMatrix();
  
}