显示时间特效

我很早之前2018-6月做了一个钟表显示时间，也发表了博客，当时效果如图:

手表预览地址：https://wangxiaoer5200.github.io/web_project/web/clock.html

时间预览地址：https://wangxiaoer5200.github.io/learning/timeRender/index.html
今天要实现的这个的效果如图：



今天时间特效我也是从网上找的一个canvas实现 然后自己改了点东西，因为觉得有趣所以记录下来：

html: <canvas id="canvas" style="height:100%"></canvas>
js:

data = [
[
[0, 0, 1, 1, 1, 0, 0],
[0, 1, 1, 0, 1, 1, 0],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 1, 1, 0, 1, 1, 0],
[0, 0, 1, 1, 1, 0, 0]
],
[
[0, 0, 1, 1, 0, 0, 0],
[0, 1, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 0]
],
[
[0, 1, 1, 1, 1, 1, 0],
[1, 1, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 1, 1, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 1, 1, 0, 0, 0, 0],
[1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1]
],
[
[0, 1, 1, 1, 1, 1, 0],
[1, 1, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 1, 1, 0, 0],
[0, 0, 0, 1, 1, 0, 0],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 1, 1, 1, 1, 1, 0]
],
[
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 1, 1, 1, 0],
[0, 0, 1, 1, 1, 1, 0],
[0, 1, 1, 0, 1, 1, 0],
[1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 0, 1, 1, 0]
],
[
[1, 1, 1, 1, 1, 1, 1],
[1, 1, 0, 0, 0, 0, 0],
[1, 1, 0, 0, 0, 0, 0],
[1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 0],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 0],
[0, 1, 1, 1, 1, 0, 0]
],
[
[0, 0, 0, 0, 1, 1, 0],
[0, 0, 0, 1, 1, 0, 0],
[0, 0, 1, 1, 0, 0, 0],
[0, 1, 1, 0, 0, 0, 0],
[1, 1, 0, 0, 0, 0, 0],
[1, 1, 0, 1, 1, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 0, 1, 1, 1, 1, 0]
],
[
[1, 1, 1, 1, 1, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1]
],
[
[0, 0, 1, 1, 1, 0, 0],
[0, 1, 1, 0, 1, 1, 0],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 1, 1, 1, 1, 1, 0],
[0, 1, 1, 1, 1, 1, 0],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 1, 1, 0, 1, 1, 0],
[0, 0, 1, 1, 1, 0, 0]
],
[
[0, 0, 1, 1, 1, 0, 0],
[0, 1, 1, 0, 1, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[1, 1, 0, 0, 0, 1, 1],
[0, 1, 1, 1, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1],
[0, 0, 0, 0, 0, 1, 1]
],
[
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 1, 0, 0, 0],
[0, 0, 1, 1, 1, 0, 0],
[0, 0, 0, 1, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 1, 0, 0, 0],
[0, 0, 1, 1, 1, 0, 0],
[0, 0, 0, 1, 0, 0, 0]
]
];

var WINDOW_WIDTH;
var WINDOW_HEIGHT;
var R;
var MAEGIN_TOP;
var MAEGIN_LEFT;
var time;
var year = new Date().getFullYear();
var month = new Date().getMonth();
var day = new Date().getDate();
const nowDate = new Date(year, month, day, 0, 0, 0);
var curShowTimeSeconds = 0;

var balls = [];
const colors = [
'#409EFF',
'#67C23A',
'#E4E7ED',
'#E6A23C',
'#909399',
'#909399',
'#F56C6C'
];

window.onload = () => {
Init();
};

window.onresize = () => {
clearInterval(time);
Init();
};

function Init() {
WINDOW_WIDTH = document.body.clientWidth;
WINDOW_HEIGHT = document.body.clientHeight;
MAEGIN_LEFT = Math.round(WINDOW_WIDTH / 10);
R = Math.round((WINDOW_WIDTH * 4) / 5 / 108) - 1;
MAEGIN_TOP = Math.round(WINDOW_HEIGHT / 10);

var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
canvas.width = WINDOW_WIDTH;
canvas.height = WINDOW_HEIGHT;
curShowTimeSeconds = getCurShowTimeSeconds();
time = setInterval(() => {
render(context);
update();
}, 50);
}

function update() {
var nextShowTimeseconds = getCurShowTimeSeconds();

var h = parseInt(curShowTimeSeconds / 3600);
var m = parseInt((curShowTimeSeconds - h * 3600) / 60);
var s = curShowTimeSeconds % 60;

var hs = parseInt(nextShowTimeseconds / 3600);
var ms = parseInt((nextShowTimeseconds - h * 3600) / 60);
var ss = nextShowTimeseconds % 60;

if (s != ss) {
if (parseInt(h / 10) != parseInt(hs / 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT, parseInt(hs / 10));
}
if (parseInt(h % 10) != parseInt(hs % 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT + 15 * (R + 1), parseInt(hs % 10));
}
if (parseInt(m / 10) != parseInt(ms / 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT + 39 * (R + 1), parseInt(ms / 10));
}
if (parseInt(m % 10) != parseInt(ms % 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT + 54 * (R + 1), parseInt(hs % 10));
}
if (parseInt(s / 10) != parseInt(ss / 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT + 78 * (R + 1), parseInt(ss / 10));
}
if (parseInt(s % 10) != parseInt(ss % 10)) {
Addball(MAEGIN_TOP, MAEGIN_LEFT + 93 * (R + 1), parseInt(ss % 10));
}
curShowTimeSeconds = nextShowTimeseconds;
}
updateBalls();
}

function Addball(top, left, content) {
for (let i = 0; i < data[content].length; i++) {
for (let j = 0; j < data[content][i].length; j++) {
if (data[content][i][j] == 1) {
let nums = Math.floor(Math.random() * 4);
balls.push({
x: left + 2 * j * (R + 1) + (R + 1),
y: top + 2 * i * (R + 1) + (R + 1),
g: 1.5 + Math.random(),
vx: Math.pow(-1, nums) * 4,
vy: nums * -4,
colors: colors[Math.floor(Math.random() * colors.length)]
});
}
}
}
}

function updateBalls() {
for (let i = 0; i < balls.length; i++) {
balls[i].x += balls[i].vx;
balls[i].y += balls[i].vy;
balls[i].vy += balls[i].g;
if (balls[i].y >= WINDOW_HEIGHT - R) {
balls[i].y = WINDOW_HEIGHT - R;
balls[i].vy = -balls[i].vy * 0.75;
}
}
let cur = 0;
for (let i = 0; i < balls.length; i++) {
if (balls[i].x + R > 0 && balls[i].x - R < WINDOW_WIDTH) {
balls[cur++] = balls[i];
}
}

while (balls.length > cur) {
balls.pop();
}
}

function getCurShowTimeSeconds() {
var curTime = new Date();
var ret = curTime.getTime()-nowDate.getTime();
ret = Math.round(ret / 1000);
return ret >= 0 ? ret : 0;
}

function render(context) {
context.clearRect(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
var h = parseInt(curShowTimeSeconds / 3600);
var m = parseInt((curShowTimeSeconds - h * 3600) / 60);
var s = curShowTimeSeconds % 60;
renderDight(MAEGIN_LEFT, MAEGIN_TOP, parseInt(h / 10), context);
renderDight(
MAEGIN_LEFT + 15 * (R + 1),
MAEGIN_TOP,
parseInt(h % 10),
context
);
renderDight(MAEGIN_LEFT + 27 * (R + 1), MAEGIN_TOP, 10, context);
renderDight(
MAEGIN_LEFT + 39 * (R + 1),
MAEGIN_TOP,
parseInt(m / 10),
context
);
renderDight(
MAEGIN_LEFT + 54 * (R + 1),
MAEGIN_TOP,
parseInt(m % 10),
context
);
renderDight(MAEGIN_LEFT + 67 * (R + 1), MAEGIN_TOP, 10, context);
renderDight(
MAEGIN_LEFT + 78 * (R + 1),
MAEGIN_TOP,
parseInt(s / 10),
context
);
renderDight(
MAEGIN_LEFT + 93 * (R + 1),
MAEGIN_TOP,
parseInt(s % 10),
context
);

for (let s = 0; s < balls.length; s++) {
context.fillStyle = balls[s].colors;
context.beginPath();
context.arc(balls[s].x, balls[s].y, R, 0, 2 * Math.PI);
context.closePath();
context.fill();
}
}

function renderDight(x, y, num, cxt) {
cxt.fillStyle = 'rgb(0,102,153)';
for (let i = 0; i < data[num].length; i++) {
for (let j = 0; j < data[num][i].length; j++) {
if (data[num][i][j] == 1) {
cxt.beginPath();
cxt.arc(
x + j * 2 * (R + 1) + (R + 1),
y + i * 2 * (R + 1) + (R + 1),
R,
0,
2 * Math.PI
);
cxt.closePath();
cxt.fill();
}
}
}
}

具体代码可以看我github的;

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原文地址：https://www.cnblogs.com/wangxiaoer5200/p/11936607.html