PhyllotaxisSunflowerColored.pde

void setup(){
  
  size(800,800,P2D);
  background(0);
  stroke(255);
  noFill();  
}

//The radius from zero (The distance from the center)
float radius = 0;
//The rotation in DEGREES
float rotation = 137.5;
//The diameter of the circles
float diameter = 5;
//the color of the circles
float redColor = 0;
float greenColor = 0;
float blueColor = 0;
float alpha = 0;
float iterations = 0;


void draw(){
  
  //Exit condition. We stop the pattern when we reach the edge of the window.
  if(radius < height){
    
    //We move (translate) the zero of the X and Y axis to the middle of the screen
    //So the grid has it's zero in the Center (x=0 and y=0 is in the CENTER now)
    translate(width/2, height/2);
    
    //Now we rotate the grid around oru new center
    //IMPORTANT!! The rotate() functions expects RADIANS for a value - NOT DEFREES.
    //So we convert our previously defined rotation values to radians on the fly! :)
    rotate(radians(rotation));
    
    if(iterations < 255){
      alpha += 0.3;
      blueColor += 5;
      fill(redColor,greenColor,blueColor,alpha);
    }
    else if(iterations > 450){
      alpha += -0.4;
      fill(redColor,greenColor,blueColor,alpha);
      diameter += 0.2;
    }
    
    //Fills the circle with the new color
    stroke(redColor,greenColor,blueColor,alpha);
    
    //Now, we draw the ellipse
    ellipse(0,radius,diameter,diameter);
    
    //Here, things get set up for the next turn.
    //...the radius gets bigger...
    radius += 0.5;
    //... we add more rotation...
    rotation += 137.5;
    
    //... the diameter of the circles gets bigger
    diameter += 0.05;
    
    //Count up one iteration
    iterations++;
    
    println("Green: " + greenColor);
    println("Blue: " + blueColor);
    println("alpha: " + alpha);

  }
  
}