/
flowers.html
121 lines (100 loc) · 2.61 KB
/
flowers.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Pretty pretty flowers</title>
</head>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
overflow: hidden;
}
#target {
background: black;
height: 100vh;
width: 100vw;
z-index: -1;
position: fixed;
}
button {
background: transparent;
border: 1px solid transparent;
border-radius: 5px;
box-shadow: 0 0 5px 2px #0f0;
color: #0f0;
margin: 1em;
padding: 0.3em;
cursor: pointer;
}
#counter {
cursor: all-scroll;
position: absolute;
top: 0;
right: 0;
}
</style>
<body>
<canvas id="target"></canvas>
<div id="wrapper">
<button id="stahp">That one button</button>
<button id="counter"></button>
</div>
<script type="text/javascript">
// fibo
let prev = 1, prevprev = 0;
const nextFibo = () => {
const cur = prev + prevprev;
prevprev = prev;
prev = cur;
return cur;
}
// canvas setup
const canvas = document.getElementById("target");
const ctx = canvas.getContext('2d');
ctx.strokeStyle = 'black';
// ctx.globalCompositeOperation = 'destination-over';
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
let centerX = Math.ceil(canvas.width / 2);
let centerY = Math.ceil(canvas.height / 2);
let killer = 0;
let multiplier = Math.random(4);
const drawCircle = () => {
// Loop counter && infinity killer
killer++;
let angle = killer * multiplier; // edit multiplier for differen flower
// Distance from origo
let distance = 5 * Math.sqrt(angle);
// 250,250 = centerpoint
let x = centerX + distance * Math.sin(angle);
let y = centerY + distance * Math.cos(angle);
// ctx.clearRect(0,0,canvas.width, canvas.height);
ctx.fillStyle = 'hsl(' + distance * 8 + ', 100%, 50%)';
ctx.beginPath();
ctx.arc(x, y, 20, 0, Math.PI * 2);
ctx.closePath();
ctx.fill();
ctx.stroke();
}
const animate = () => {
if (killer > 1337) { return; }
drawCircle();
requestAnimationFrame(animate);
document.querySelector('#counter').innerHTML = killer;
};
animate();
const btn = document.querySelector('#stahp');
let handler;
handler = () => {
killer = 0;
multiplier = Math.random(4);
animate();
};
btn.addEventListener('click', handler);
</script>
</body>
</html>