function update(
sketch = mutable sketch,
p5 = mutable p5,
image = mutable image,
map = sketch.map
) {
updateFps();
image.loadPixels();
for (let i = 0; i < image.width; i++) {
for (let j = 0; j < image.height; j++) {
let c = sketch.color(
map(j, 0, image.height, 0, 360),
100,
100,
map(i, 0, image.width, 0, 1.0)
);
image.set(i, j, c);
}
}
image.updatePixels();
}