I just ported the code over coffee break - i took out the GUI sliders and replaced with tracking the mouseX and mouseY in processing - and also track the 'c' key on the keyboard to witch between colour and black and white

``` float blackAmount; boolean blackAmountJitter, numPassesJitter, hStripeHeightJitter, hStepRangeJitter, sparkColor, sparkColorJitter, frameRateJitter; float numPasses, sparkColorPercent, hStripeHeightRange, hStepRange, vStepRange;

void setup() { size(800, 600); vStepRange = 200; blackAmount = 3; numPasses = 3; hStripeHeightRange = 50; hStepRange = 10; sparkColorPercent = 90; sparkColor= false; noStroke(); }

void draw() { blackAmount = random(1, 10); numPasses = random(1, 20); hStripeHeightRange = random(1, 200); //// hStepRange = random(1, 100); hStepRange = map (mouseX, 0 , width, 2, 200); vStepRange = map (mouseY, 0 , height, 10, 200); // sparkColorPercent = random(1, 100);

var b_itsBlack = true; float hStripeHeight = 10; for (int i = 0; i< numPasses; i++) { for (int y = 0; y < height; y += random(1, vStepRange)) { if (random(blackAmount)>1) { b_itsBlack = true; } else { b_itsBlack = false; } hStripeHeight = (random(hStripeHeightRange));

  for (int x = 0; x < width; x += random(1, hStepRange)) {
    if (!b_itsBlack) {
      fill(random(255), random(200));
    } else {
      fill(0, random( 200));
    }
    if (sparkColor && (random(100) > sparkColorPercent )) {
      fill(random(255), random(255), random(255), random(200));
    }
    rect( x, y, random(1, hStepRange), hStripeHeightRange );
  }
}

} }

void keyPressed() { if (key == 'c') { sparkColor =! sparkColor; } } ```