int leftBounds = 20;
int topBounds = 20;
int x = leftBounds;
int y = topBounds;
int rightBounds = 380;
int bottomBounds = 380;
int baseMax = 20;
int randomMax = 10;
int maxLines = 200;
int counter = 0;

PImage myImage, myMask;

void setup(){
  size(400, 400);
  background(255);
  smooth();
  
  myMask = loadImage("mask.png");
  
}

void draw(){
   if(counter < maxLines){
    int maxDistance = baseMax * int(random(0, 1) * randomMax);
    int minDistance = 2;
    int direction = random(0, 1) < 0.5 ? -1 : 1; 
    int xEnd = x + (direction * (minDistance + int( random(0, 1) * maxDistance)) );
    direction =  random(0, 1) < 0.5 ? -1 : 1;
    int yEnd = y + (direction * (minDistance + int( random(0, 1) * maxDistance)) );
    
    if(xEnd < leftBounds) xEnd = leftBounds;
    if(xEnd > rightBounds) xEnd = rightBounds;
    if(yEnd < topBounds) yEnd = topBounds;
    if(yEnd > bottomBounds) yEnd = bottomBounds;
    
    stroke(#006699, 20);
    strokeWeight(maxDistance/20);
    line(x, y, xEnd, yEnd);
    x = xEnd;
    y = yEnd;
    
    image(myMask, 0, 0);
    
    counter++;
  }
//  if(counter == maxLines){
//    save("img.png");
//    background(255);
//    myImage = loadImage("img.png");
//    myImage.mask(myMask);
//    image(myImage, 0, 0);
//    noLoop();
//  }
}

void keyPressed(){
  if(key == 'r'){
    background(255);
    counter = 0;
  }
  if(key =='q'){
    save("p41_Lines08.jpg");
    exit();
  }
}