雪绒花

/*
author:  lisper <leyapin@gmail.com> 2015
desc: 雪绒花
*/
 
int show_speed = 30;
 
PImage img;
PGraphics pg;
 
void setup () {
  size (600, 600);
  pg = createGraphics(600, 600);
  img = loadImage ("http://a.picphotos.baidu.com/album/s%3D1100%3Bq%3D90/sign=90adc5ebd12a283447a6320a6b85f29b/7c1ed21b0ef41bd55d9a3d0254da81cb38db3d7f.jpg", "jpg");
 
}
 
int numble;
int shape_random = 6;
 
void draw () {
  numble = mouseX;
  image (img, 0, 0);
 
  pg.beginDraw ();
  pg.ellipseMode(CENTER);
  pg.noStroke ();
  pg.fill (255, 70);
  if (frameCount % show_speed == 0) {
    show_speed = int (random (5, 30));
    int drop_x = int (random (width));
    int drop_y = int (random (height));
    for (int t=1; t<6; t++) {
      pg.beginShape ();
      for (float i = 0; i < 2*PI; i += (2*PI/30)) {
        float x =  t*t * cos (i) + random (shape_random)-shape_random/2;
        float y =  t*t * sin (i) + random (shape_random)-shape_random/2;
        pg.vertex (x + drop_x, y + drop_y);
      }
      pg.endShape (CLOSE);
    }
  }
  pg.endDraw ();
  pg.filter (BLUR, 1);
  pg.fill (255, 0);
  pg.rect (0-10, 0-10, width+20, height+20);
  image (pg, 0, 0);
}
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