panel

PGraphics frames_mask;

PGraphics pg1;

int fw, fh;

float p0 = .2;

float p1 = .05;

float scale = 7./16.;

int bg = 0;

​

boolean  s0= false, 

  s1 = false, 

  s2 = false, 

  s3 = false;

​

void setup() {

  fullScreen(P2D);

  strokeWeight(.6);

  fill(bg, 4);

  stroke(bg, 3);

​

  //size(320, 180, P2D);

​

  frames_mask = createGraphics(width, height, P2D);

​

  fw = floor(height*scale);

  fh = floor(width*scale);

​

  frames_mask.beginDraw();

  frames_mask.fill(255);

  frames_mask.noStroke();

  frames_mask.endDraw();

​

  createMask();

​

  pg1 = createGraphics(width, height, P2D);

  pg1.beginDraw();

  pg1.stroke(0);

  pg1.background(255-bg);

  pg1.fill(255-bg, 100);

  pg1.endDraw();

}

​

​

void createMask() {

​

  frames_mask.beginDraw();

  frames_mask.noStroke();

  frames_mask.background(0);

​

  //if (random(1)<.01) {

  //  bg=255-bg;

  //}

​

  if (random(1)<p0/10.) {

    s0 = !s0;

  }

​

  if (s0)frames_mask.rect(0, 0, width, height);

​

​

  frames_mask.pushMatrix();

  frames_mask.translate(0, (height-fh)/2);

​

  if (random(1)<p1)

    s1 = !s1;

  if (s1)

    frames_mask.rect(fw/9, 0, fw, fh);

​

  frames_mask.translate((width-fw)/2, 0);

​

  if (random(1)<p1)

    s2 = !s2;

​

  if (s2)

    frames_mask.rect(0, 0, fw, fh);

​

  frames_mask.translate((width-fw)/2-fw/9, 0);

​

  if (random(1)<p1)

    s3 = !s3;

​

  if (s3)

    frames_mask.rect(0, 0, fw, fh);

​

  frames_mask.popMatrix();

  frames_mask.endDraw();

}

​

void draw() {

  background(bg);

  rect(-1, -1, width+2, height+2);

​

  pg1.beginDraw();

  pg1.rect(-1, -1, width+2, height+2);

  pg1.stroke(bg);

  pg1.pushMatrix();

  pg1.translate(0, height/2);

  float h = scale*height/2.5; 

  for (int x = 0; x < width; x++) {

    for (int n = 0; n < 21; n++) {

      float y = random(-h, h)*(1+cos(TWO_PI*(x+width*noise(millis()))/width));

      pg1.point(x, y);

    }

  }

​

  pg1.popMatrix();

  pg1.stroke(255-bg, 0, 0);

  float x = (100*millis()/width) % width;

  pg1.line(x, 0, x, height);

  pg1.endDraw();

​

  // createMask();

  // pg1.mask(frames_mask);

​

  image(pg1, 0, 0);

​

  stroke(255-bg);

  for (int n = 0; n < 20; n++) {

   x = random(width);

   line(x, 0, x, height);

  }

}

​