/**
A processing sketch for everybody who wants to shine a little light by
<a href="http://www.local-guru.net/blog">Guru</a>
*/

PImage img;

int[] tailx = new int[10];
int[] taily = new int[10];


void setup() {
  size(300,300);
  smooth();
  frameRate(25);
  img = loadImage("spark.png");
  noCursor();
  for (int i = 0; i < 10; i++ ) {
    tailx[i] = mouseX;
    taily[i] = mouseY;
  }
}

void draw() {
  background(0);
  for( int i = 9; i > 0; i-- ) {
    stroke(255,255,128,128 - 12 * i);
    strokeWeight((10-i)/2);
    line(tailx[i], taily[i], tailx[i-1], taily[i-1]);
    tailx[i] = tailx[i - 1];
    taily[i] = taily[i - 1];  
  }
  tailx[0] = mouseX;
  taily[0] = mouseY;

  pushMatrix();
  translate( mouseX, mouseY );
  rotate( random(  PI / 4 ));
  image(img, 0 - img.width / 2, 0 - img.height / 2, img.width, img.height);
  popMatrix();
  
}