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complete exercise 0.6

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Rokas Puzonas 2024-02-05 22:06:55 +02:00
parent e964c14974
commit c5c6ec4fee
2 changed files with 70 additions and 0 deletions
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15
0. Randomness/6. Levy Flight Walker/index.html Normal file
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<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/p5@1.9.0/lib/p5.js"></script>
<script src="sketch.js"></script>
<style>
body {
background: #212121;
}
</style>
</head>
<body>
<main>
</main>
</body>
</html>

55
0. Randomness/6. Levy Flight Walker/sketch.js Normal file
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// An algorithm for picking a random number based on monte carlo method
function acceptreject(formula) {
// We do this “forever” until we find a qualifying random value.
while (true) {
// Pick a random value.
let r1 = random(1);
// Assign a probability.
let probability = formula(r1);
// Pick a second random value.
let r2 = random(1);
//{!3} Does it qualify? If so, we’re done!
if (r2 < probability) {
return r1;
}
}
}
class Walker {
constructor(x = 0, y = 0) {
this.x = x
this.y = y
}
step() {
let step = 1;
if (acceptreject(x => x*x) < 0.1) {
step = 20;
}
let dx = random(-step, step);
let dy = random(-step, step);
this.x += dx
this.y += dy
}
draw() {
stroke(0)
point(this.x, this.y)
}
}
let walker
function setup() {
createCanvas(640, 240)
background(255)
walker = new Walker(320, 120)
}
function draw() {
walker.step();
walker.draw();
}