var dernierX = canv57.width * Math.random();

var dernierY = canv57.height * Math.random();

var hue = 0; // couleur

function animate() {

context57.save();

context57.lineCap = "round";

context57.beginPath();

context57.lineWidth = 5 + Math.random() * 10;

context57.moveTo(dernierX, dernierY);

dernierX = canv57.width * Math.random(); // prochain point

dernierY = canv57.height * Math.random();

context57.bezierCurveTo(canv57.width * Math.random(), canv57.height * Math.random(),

canv57.width * Math.random(), canv57.height * Math.random(), dernierX, dernierY);

hue = hue + 10 * Math.random(); // modification de la couleur

context57.strokeStyle = "hsl("+ hue +",50%,50%)";

context57.shadowColor = "white";

context57.shadowBlur = 10;

context57.stroke();

context57.restore();

}

function assombrir() {

context57.fillStyle = "rgba(0,0,0,0.1)";

context57.fillRect(0, 0, canv57.width, canv57.height);

}

setInterval(animate, 100);

setInterval(assombrir, 40);

</script>