JavaScript

语言：

JaveScriptBabelCoffeeScript

确定

let canvas = document.getElementById("canvas");

let ctx = canvas.getContext('2d');

let context = ctx;

let width = window.innerWidth;

let height = window.innerHeight;

let centerX = width * 0.5;

let centerY = height * 0.5;

let mainColor = '#0F76E6';

let secondaryColor = '#CF00EA';

canvas.width = width;

canvas.height = height;

const MAX_VELOCITY = 10;

const MAX_LINE_WIDTH = 1;

const MAX_SIZE = Math.max(centerX + 300, centerY + 300);

let objsNum = 250;

let objs = [];

function init() {

if (!objs.length) {

for (var i = 0; i < objsNum; i++) {

objs.push(newObj(i))

}

}

}

function animate() {

window.requestAnimationFrame(animate);

render();

}

function render() {

ctx.clearRect(0, 0, width, height);

for (var i = 0, l = objs.length; i < l; i++) {

let o = objs[i];

if (o.s > MAX_SIZE && !o.locked) {

o.c = mainColor;

o.d = -1;

o.locked = true;

} else if (o.s < 0) {

o.c = secondaryColor;

o.d = 1;

o.locked = false;

}

drawHex(o);

ctx.beginPath();

ctx.rect(o.x + random(-o.s, o.s), o.y + random(-o.s, o.s), 5 * Math.sin(o.s * 2 * Math.PI / o.nS), 5);

ctx.stroke();

o.s += o.v * o.d;

}

}

function drawHex(o) {

ctx.beginPath();

ctx.moveTo(o.x + o.s * Math.cos(o.r), o.y + o.s * Math.sin(o.r));

for (let i = 1; i <= o.nS; i += 1) {

let angle = (i * 2 * Math.PI / o.nS) + o.r;

ctx.lineTo(o.x + o.s * Math.cos(angle), o.y + o.s * Math.sin(angle));

}

ctx.strokeStyle = o.c;

ctx.lineWidth = o.lW;

ctx.stroke();

}

function newObj(i) {

return {

i,

nS: random(8, 15),

s: random(5, 50),

x: centerX,

y: centerY,

c: secondaryColor,

r: random(0, MAX_SIZE + 1),

v: random(0.5, MAX_VELOCITY),

lW: random(1, MAX_LINE_WIDTH),

d: 1

}

}

animate();

init();

function random(min, max) {

min = Math.ceil(min);

max = Math.floor(max);

return Math.floor(Math.random() * (max - min + 1)) + min;

}