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炫酷时钟，小球掉落计时

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Html5

//index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>炫酷时钟6</title>
</head>
<body style="height:100%">
    <canvas id="canvas" style="width:100%"></canvas>
    <script class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="digit.js"></script>
    <script class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="countdown.js"></script>
</body>
</html>

//digit.js
digit =
    [
        [
            [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
        [
            [0,0,0,1,1,0,0],
            [0,1,1,1,1,0,0],
            [0,0,0,1,1,0,0],
            [0,0,0,1,1,0,0],
            [0,0,0,1,1,0,0],
            [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],
            [1,1,1,1,1,1,1]
        ],//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],
            [0,0,1,1,0,0,0],
            [0,1,1,0,0,0,0],
            [1,1,0,0,0,0,0],
            [1,1,0,0,0,1,1],
            [1,1,1,1,1,1,1]
        ],//2
        [
            [1,1,1,1,1,1,1],
            [0,0,0,0,0,1,1],
            [0,0,0,0,1,1,0],
            [0,0,0,1,1,0,0],
            [0,0,1,1,1,0,0],
            [0,0,0,0,1,1,0],
            [0,0,0,0,0,1,1],
            [0,0,0,0,0,1,1],
            [1,1,0,0,0,1,1],
            [0,1,1,1,1,1,0]
        ],//3
        [
            [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],
            [1,1,0,0,1,1,0],
            [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],
            [0,0,0,1,1,1,1]
        ],//4
        [
            [1,1,1,1,1,1,1],
            [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],
            [0,0,0,0,0,1,1],
            [1,1,0,0,0,1,1],
            [0,1,1,1,1,1,0]
        ],//5
        [
            [0,0,0,0,1,1,0],
            [0,0,1,1,0,0,0],
            [0,1,1,0,0,0,0],
            [1,1,0,0,0,0,0],
            [1,1,0,1,1,1,0],
            [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],
            [0,1,1,1,1,1,0]
        ],//6
        [
            [1,1,1,1,1,1,1],
            [1,1,0,0,0,1,1],
            [0,0,0,0,1,1,0],
            [0,0,0,0,1,1,0],
            [0,0,0,1,1,0,0],
            [0,0,0,1,1,0,0],
            [0,0,1,1,0,0,0],
            [0,0,1,1,0,0,0],
            [0,0,1,1,0,0,0],
            [0,0,1,1,0,0,0]
        ],//7
        [
            [0,1,1,1,1,1,0],
            [1,1,0,0,0,1,1],
            [1,1,0,0,0,1,1],
            [1,1,0,0,0,1,1],
            [0,1,1,1,1,1,0],
            [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],
            [0,1,1,1,1,1,0]
        ],//8
        [
            [0,1,1,1,1,1,0],
            [1,1,0,0,0,1,1],
            [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],
            [0,0,0,0,1,1,0],
            [0,0,0,1,1,0,0],
            [0,1,1,0,0,0,0]
        ],//9
        [
            [0,0,0,0],
            [0,0,0,0],
            [0,1,1,0],
            [0,1,1,0],
            [0,0,0,0],
            [0,0,0,0],
            [0,1,1,0],
            [0,1,1,0],
            [0,0,0,0],
            [0,0,0,0]
        ]//:
    ];

//countdown.js
var MARGIN_LEFT,
    MARGIN_TOP,
    radius,
    curShowTimeSeconds = 0;

var balls = [];
const colors = ["#33B5E5","#0099CC","#AA66CC","#9933CC","#99CC00","#669900","#FFBB33","FF8800","#FF4444","#CC0000"]
window.onload = function(){
    WINDOW_WIDTH = document.body.clientWidth;
    WINDOW_HEIGHT = document.body.clientHeight;
    MARGIN_LEFT = Math.round(WINDOW_WIDTH/10);
    MARGIN_TOP = Math.round(WINDOW_HEIGHT/5);
    radius = Math.round(WINDOW_WIDTH*4/5/108)-1;
    var canvas = document.getElementById('canvas');
    var context = canvas.getContext('2d');

    canvas.width = WINDOW_WIDTH;
    canvas.height = WINDOW_HEIGHT;
    curShowTimeSeconds = getCurrentShowTimeSeconds();
    setInterval(function(){
        render(context);
        update();
    },50)
}

function getCurrentShowTimeSeconds(){
    var curTime = new Date(),
        ret = curTime.getHours()*3600+curTime.getMinutes()*60+curTime.getSeconds();
    return ret;
}

function update(){
    var nextShowTimeSeconds = getCurrentShowTimeSeconds(),
        nextHours = parseInt(nextShowTimeSeconds/3600),
        nextMinutes = parseInt(nextShowTimeSeconds/60%60),
        nextSeconds = nextShowTimeSeconds%60;

    var curHours = parseInt(curShowTimeSeconds/3600),
        curMinutes = parseInt(curShowTimeSeconds/60%60),
        curSeconds = curShowTimeSeconds%60;

        if(nextSeconds != curSeconds){
            if(parseInt(curHours/10) != parseInt(nextHours/10)){
                addBalls(MARGIN_LEFT+0,MARGIN_TOP,parseInt(curHours/10));
            }
            if(parseInt(curHours%10) != parseInt(nextHours%10)){
                addBalls(MARGIN_LEFT+15*(radius+1),MARGIN_TOP,parseInt(curHours%10));
            }
            if(parseInt(curMinutes/10) != parseInt(nextMinutes/10)){
                addBalls(MARGIN_LEFT+39*(radius+1),MARGIN_TOP,parseInt(curMinutes/10));
            }
            if(parseInt(curMinutes%10) != parseInt(nextMinutes%10)){
                addBalls(MARGIN_LEFT+54*(radius+1),MARGIN_TOP,parseInt(curMinutes%10));
            }
            if(parseInt(curSeconds/10) != parseInt(nextSeconds/10)){
                addBalls(MARGIN_LEFT+78*(radius+1),MARGIN_TOP,parseInt(nextSeconds/10));
            }
            if(parseInt(curSeconds%10) != parseInt(nextSeconds%10)){
                addBalls(MARGIN_LEFT+93*(radius+1),MARGIN_TOP,parseInt(nextSeconds%10));
            }
                curShowTimeSeconds = nextShowTimeSeconds;
        }
        updateBalls();
        //console.log(balls.length);
}

function updateBalls(){
    for(var 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-radius){
            balls[i].y = WINDOW_HEIGHT-radius;
            balls[i].vy = -balls[i].vy*0.75;
        }
    }

    var count = 0;  //记录保留在canvas内小球的数量
    for(var i=0;i<balls.length;i++){
        if(balls[i].x+radius > 0 && balls[i].x-radius<WINDOW_WIDTH){
            balls[count++] = balls[i];
        }
    }
    while(balls.length > count){
            balls.pop();
    }
}

function addBalls(x,y,num){
    for(var i=0;i<digit[num].length;i++){
        for(var j=0;j<digit[num][i].length;j++){
            if(digit[num][i][j] == 1){
                var aBall = {
                    x:x+j*2*(radius+1)+(radius+1),
                    y:y+i*2*(radius+1)+(radius+1),
                    g:1.5+Math.random(),
                    vx:Math.pow(-1,Math.ceil(Math.random()*1000))*4,
                    vy:-5,
                    color:colors[Math.floor(Math.random()*colors.length)]
                }
                balls.push(aBall);
            }
        }
    }
}

function render(ctx){
    ctx.clearRect(0,0,WINDOW_WIDTH,WINDOW_HEIGHT);  //刷新掉之前的动画

    var hours = parseInt(curShowTimeSeconds/3600),
        minutes = parseInt(curShowTimeSeconds/60%60),
        seconds = parseInt(curShowTimeSeconds%60);

    renderDigit(MARGIN_LEFT,MARGIN_TOP,parseInt(hours/10),ctx);
    renderDigit(MARGIN_LEFT+15*(radius+1),MARGIN_TOP,parseInt(hours%10),ctx);
    renderDigit(MARGIN_LEFT+30*(radius+1),MARGIN_TOP,10,ctx);
    renderDigit(MARGIN_LEFT+39*(radius+1),MARGIN_TOP,parseInt(minutes/10),ctx);
    renderDigit(MARGIN_LEFT+54*(radius+1),MARGIN_TOP,parseInt(minutes%10),ctx);
    renderDigit(MARGIN_LEFT+69*(radius+1),MARGIN_TOP,10,ctx);
    renderDigit(MARGIN_LEFT+78*(radius+1),MARGIN_TOP,parseInt(seconds/10),ctx);
    renderDigit(MARGIN_LEFT+93*(radius+1),MARGIN_TOP,parseInt(seconds%10),ctx);

    for(var i=0;i<balls.length;i++){
        ctx.fillStyle = balls[i].color;
        ctx.beginPath();
        ctx.arc(balls[i].x,balls[i].y,radius,0,2*Math.PI,true);
        ctx.closePath();
        ctx.fill();
    }
}   

function renderDigit(x,y,num,ctx){
    ctx.fillStyle = 'rgb(0,102,153)';

    for(var i=0;i<digit[num].length;i++){
        for(var j=0;j<digit[num][i].length;j++){
            if(digit[num][i][j] == 1){
                ctx.beginPath();
                ctx.arc(x+j*2*(radius+1)+radius+1,y+i*2*(radius+1)+radius+1,radius,0,2*Math.PI);
                ctx.closePath();
                ctx.fill();
            }
        }
    }
}

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