// Viral Expansion 1x
// by John Clavin

float R;
float G;
float B;
int pF = 6; // powerFactor
int xPos;
int yPos;
color levelColor;

void setup() 
{
  size(700, 500);
  background(240);
  stroke(0);
  smooth();
  frameRate(.25);
}

void draw() {
  setColor();
  background(240);
  explode(width/2, height/2, 15);
}
  
void explode(int x, int y, int level) {
  R += .0075;
  G -= .0075;
  B += .0026;
  levelColor = color(R, G, B);
  xPos = x + int(random(-pF, pF));
  yPos = y + int(random(-pF, pF));
  fill(levelColor);
  ellipse(xPos, yPos, 6, 6);
  if(level > 1) {
    level--;
    explode(xPos, yPos, level);
    explode(xPos, yPos, level);
  }
}

void setColor() {
  R = 0;
  G = 255;
  B = 0;
}