// Dartmouth CS 2, Winter 2009, Chris Bailey-Kellogg
// Notes 1 | Sketch 5
// Based on a sketch by Sharp Hall, http://stereotheism.org/071106/

// Initialization
void setup()
{
  size(500,500);          // Make the window bigger
  smooth();               // Make the edges smoother (anti-aliased)
  background(0,0,0);      // Black background
  frameRate(15);          // Slow it down -- 15 frames per second
}

// What to do every frame
void draw()
{
  if (mousePressed) {
    // Choose random red, green, and blue components of the stroke color
    // Also make it slightly opaque (200)
    stroke(random(255),random(255),random(255),200);
    // Choose random width of the stroke
    strokeWeight(random(30));
    // Now draw a line from the current mouse position to the previous one
    line(mouseX,mouseY,pmouseX,pmouseY);
  }
  
  // Every fifth frame, draw a square
  if (frameCount % 5 == 0) {
    // Random fill color; somewhat more opaque
    noStroke();
    fill(random(0,60),random(30,80),random(80,120),100);
    // Random position; size 100x100
    rect(random(width),random(height), 100,100);
  }
}