mask() method of p5.Image.let img;
let imgMask;
function preload() {
img = loadImage('assets/moonwalk.jpg');
imgMask = loadImage('assets/mask.png');
}
function setup() {
createCanvas(720, 400);
img.mask(imgMask);
imageMode(CENTER);
}
function draw() {
background(0, 102, 153);
image(img, width / 2, height / 2);
image(img, mouseX, mouseY);
}