• Google创意时钟


    <!DOCTYPE html>
    <html>
    <style _mce_bogus="1"><!--
    html,body {margin:0; padding:0; position:absolute; width:100%; height:100%; overflow: hidden}
    #screen {width:80%; height:50%; background:#ddd; position: absolute; left:10%; top:10%; overflow:hidden}
    span.blue, span.green, span.gray, span.red {
        position: absolute;
        font-size: 0;
        -webkit-border-radius: 5px;
        -moz-border-radius: 5px;
        -o-border-radius: 5px;
        border-radius: 5px;
    }
    .blue {background: #06c}
    .green {background: #4eb84a}
    .gray {background: #f3f3f3}
    .red {background: #da4901}
    --></style>
    <div id="screen">
    </div>
    
    <script type="text/javascript"><!--
    (function (D) {
        
        var _ = {
            extend: function (t, s, o) {
                if (o === undefined) o = true;
                for (var p in s) {
                    if (!(p in t) || o) {
                        t[p] = s[p]
                    }
                }
                return t;
            },
            addEvent: function (o, e, f) {
                o.addEventListener ? o.addEventListener(e, f, false) : o.attachEvent('on' + e, function () {f.call(o)})
            },
            $ : function (id) {
                return typeof id === 'string' ? D.getElementById(id) : id;
            },
            log : function (s) {
                !!window.console && console.log(s)
            }
        };
        
        var NUM = [
            '####   ##########  #####################    ',
            '#  #   #   #   ##  ##   #      ##  ##  #    ',
            '#  #   #   #   ##  ##   #      ##  ##  #  # ',
            '#  #   #####################   #########    ',
            '#  #   ##      #   #   ##  #   ##  #   #  # ',
            '#  #   ##      #   #   ##  #   ##  #   #    ',
            '####   #########   #########   #########    '
        ]
        
        var TM, tm, MF = Math.floor, ow = 10, od = 8, NT = [], _NT = [], scr, W, H, iPos = {}, e = 0, O = [], AO = {}, grid, gw, gh;
        
        function getTime () {
            // reset AO
            AO = {};
            
            tm = TM;
            var T = new Date(),
                h = T.getHours(),
                m = T.getMinutes(),
                s = T.getSeconds();
            TM = [
                MF(h/10),
                h%10,
                MF(m/10),
                m%10,
                MF(s/10),
                s%10
            ];
            //_.log(tm+'\n'+TM)
            setTimeout(arguments.callee, 1000);
        }
        
        
        function toNT(TM, NT) {
            for (var i = 0; i < 7; i ++) {
                var temp = [];
                for (var j = 0; j < TM.length; j ++) {
                    temp.push(NUM[i].substr(TM[j]*4, 4));
                    if (j == 1 || j == 3) {
                        temp.push(NUM[i].substr(40, 4))
                    }
                }
                NT[i] = temp.join('');
            }
        }
        
        function CNum () {
            toNT(TM, NT);
            if (tm && tm.length) {toNT(tm, _NT)}
            DrawNum();
            setTimeout(arguments.callee, 20)
        }
        
        function DrawNum () {
            //_.log(NT.length+'\n'+_NT.length)
            var ind = 0;
            for (var i = 0; i < NT.length; i ++) {
                for (var j = 0; j < NT[i].length; j ++) {
                
                    var _char = '@', nchar = NT[i].charAt(j);
                    
                    var c = nchar === '#' ? 'blue' : 'gray';
                        
                    if (nchar === '#') {
                        if (MF(j/4) < 3) c = 'red';
                        else if (MF(j/4) < 6) c = 'blue';
                        else if (MF(j/4) < 8) c = 'green';
                    } else {
                        c = 'gray';
                    }
                    
                    if (O.length >= 4*8*7) {
                        O[ind].o.className = c;
                        O[ind].o.style.left = j*(ow + od) + MF(j/4)*20 + iPos.x + 'px';
                        O[ind].o.style.top = i*(ow + od) + iPos.y + 'px';
                    } else {
                        O.push(new Dot(c, {
                            l: j*(ow + od) + MF(j/4)*20 + iPos.x,
                            t: i*(ow + od) + iPos.y
                        }));
                    }
                    // dot anim
                    if (_NT.length === 7) {
                        _char = _NT[i].charAt(j);
                        if (_char === '#' && nchar === ' ') {
                            var k = 'k'+i+'_'+j, _c;
                            if (MF(j/4) < 3) _c = 'red';
                            else if (MF(j/4) < 6) _c = 'blue';
                            else if (MF(j/4) < 8) _c = 'green';
                            if (!AO[k]) {
                                AO[k] = new Dot(_c, {
                                    l: j*(ow + od) + MF(j/4)*20 + iPos.x,
                                    t: i*(ow + od) + iPos.y
                                })
                                //_.log(k)
                                AO[k].anim()
                            }
                        }
                    }
                    
                    ind ++;
                }
            }
        }
        
        // DOT constructor
        function Dot (color, pos) {
            var g = Math.random();
                
            this.o = D.createElement('span');
            this.vx = this.vy = this.dx = this.dy = 0;
            this.vy = -this.randNum(1, 5);
            this.dir = Math.random() > .5 ? this.randNum(1, 5) : -1*this.randNum(1, 5);
            this.g = g < .1 ? .1 : g;
            this.x = pos.l;
            this.y = pos.t;
            scr.appendChild(this.o);
            
            this.setStyle(color, pos);
        }
        _.extend(Dot.prototype, {
            setStyle: function (c, pos) {
                var sty = this.o.style;
                this.o.className = c;
                sty['width'] = ow + 'px';
                sty['height'] = ow + 'px';
                sty['position'] = 'absolute';
                sty['left'] = pos.l + 'px';
                sty['top'] = pos.t + 'px';
            },
            randNum: function (f, t) {
                return Math.round(Math.random()*(t-f)) + f;
            },
            move: function () {
                this.x += this.dx;
                this.y += this.dy;
                this.vx += this.dx;
                this.vy += this.dy;
                
                this.o.style['left'] = this.x + 'px';
                this.o.style['top'] = this.y + 'px';
                
            },
            boundary: function () {
                //gravity
                this.vy += this.g;
                this.x += this.dir;
                this.y += this.vy;
                
                if (this.x < 0  || this.x > W) {
                    clearInterval(this.st);
                    scr.removeChild(this.o);
                }
                
                if (this.y > H-10 && this.vy > 0) {
                    this.vy *= -1;
                }
                
                //this.dotCollision();
            },
            dotCollision: function () {
                var gx = Math.round(this.x/10), 
                    gy = Math.round(this.y/10);
                    for (var ix = gx - 1; ix <= gx + 1; ix++) { 
                        for (var iy = gy - 1; iy <= gy + 1; iy++) {
                            var g = grid[iy * gw + ix] || [];
                            for (j = 0, l = g.length; j < l; j++) {
                                var that = g[j];
                                var dx = that.x - this.x;
                                var dy = that.y - this.y;
                                var d = Math.sqrt(dx * dx + dy * dy);
                                if (d < 10 && d > 0) {
                                    dx = (dx / d) * (10 - d) * .0025;
                                    dy = (dy / d) * (10 - d) * .0025;
                                    this.dx -= dx;
                                    this.dy -= dy;
                                    that.dx += dx;
                                    that.dy += dy;
                                }
                            }
                        }
                    }
                    
                if (!grid[gy * gw + gx]) grid[gy * gw + gx] = [this];
                else grid[gy * gw + gx].push(this);
            },
            anim: function () {
                var _this = this;
                this.st = setInterval(function () {
                    _this.move();
                    _this.boundary();
                }, 16)
            }
        })
        
        function resize () {
            W = scr.offsetWidth;
            H = scr.offsetHeight;
            iPos.x = (W-32*(ow+od)-20*8)/2;
            iPos.y = (H-7*(ow+od))/2;
        }
        
        // init
        _.addEvent(window, 'load', function () {
            scr = _.$('screen');
            resize();
            getTime();
            CNum();
            
            gw = Math.round(W/10); 
            gh = Math.round(H/10);
            grid = new Array(gw * gh);
        })
        _.addEvent(window, 'resize', resize)
        
    })(document)
    // --></script>
    
    </html>
    
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  • 原文地址:https://www.cnblogs.com/hdl217/p/2044892.html
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