2025 新年好!(可复制源代码)

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七夏(UID:1) 发表于 2024-12-31 18:46:19 | 显示全部楼层 |阅读模式

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源代码

<html><head>
    <meta charset="utf-8">
    <title>2025新年快乐</title>
  
    <style>
    html,body{
        margin:0px;
        width:100%;
        height:100%;
        overflow:hidden;
        background:#000;
    }
</style>
  
    </head>
    <body class="body--ready">
  
    <canvas id="canvas" style="position:absolute;width:100%;height:100%;z-index:8888" width="1357" height="954"></canvas>
    <canvas style="position:absolute;width:100%;height:100%;z-index:9999" class="canvas" width="1357" height="954"></canvas>
    <div class="overlay">
      <div class="tabs">
        <div class="tabs-labels"><span class="tabs-label tabs-label--active">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div>
  
        <div class="tabs-panels">
          <ul class="tabs-panel commands tabs-panel--active">
          </ul>
        </div>
      </div>
    </div>
    <script>
    function initVars(){
  
        pi=Math.PI;
        ctx=canvas.getContext("2d");
        canvas.width=canvas.clientWidth;
        canvas.height=canvas.clientHeight;
        cx=canvas.width/2;
        cy=canvas.height/2;
        playerZ=-25;
        playerX=playerY=playerVX=playerVY=playerVZ=pitch=yaw=pitchV=yawV=0;
        scale=600;
        seedTimer=0;seedInterval=5,seedLife=100;gravity=.02;
        seeds=new Array();
        sparkPics=new Array();
        s="https://cantelope.org/NYE/";
        for(i=1;i<=10;++i){
            sparkPic=new Image();
            sparkPic.src=s+"spark"+i+".png";
            sparkPics.push(sparkPic);
        }
        sparks=new Array();
        pow1=new Audio(s+"pow1.ogg");
        pow2=new Audio(s+"pow2.ogg");
        pow3=new Audio(s+"pow3.ogg");
        pow4=new Audio(s+"pow4.ogg");
        frames = 0;
    }
  
    function rasterizePoint(x,y,z){
  
        var p,d;
        x-=playerX;
        y-=playerY;
        z-=playerZ;
        p=Math.atan2(x,z);
        d=Math.sqrt(x*x+z*z);
        x=Math.sin(p-yaw)*d;
        z=Math.cos(p-yaw)*d;
        p=Math.atan2(y,z);
        d=Math.sqrt(y*y+z*z);
        y=Math.sin(p-pitch)*d;
        z=Math.cos(p-pitch)*d;
        var rx1=-1000,ry1=1,rx2=1000,ry2=1,rx3=0,ry3=0,rx4=x,ry4=z,uc=(ry4-ry3)*(rx2-rx1)-(rx4-rx3)*(ry2-ry1);
        if(!uc) return {x:0,y:0,d:-1};
        var ua=((rx4-rx3)*(ry1-ry3)-(ry4-ry3)*(rx1-rx3))/uc;
        var ub=((rx2-rx1)*(ry1-ry3)-(ry2-ry1)*(rx1-rx3))/uc;
        if(!z)z=.000000001;
        if(ua>0&&ua<1&&ub>0&&ub<1){
            return {
                x:cx+(rx1+ua*(rx2-rx1))*scale,
                y:cy+y/z*scale,
                d:Math.sqrt(x*x+y*y+z*z)
            };
        }else{
            return {
                x:cx+(rx1+ua*(rx2-rx1))*scale,
                y:cy+y/z*scale,
                d:-1
            };
        }
    }
  
    function spawnSeed(){
  
        seed=new Object();
        seed.x=-50+Math.random()*100;
        seed.y=25;
        seed.z=-50+Math.random()*100;
        seed.vx=.1-Math.random()*.2;
        seed.vy=-1.5;//*(1+Math.random()/2);
        seed.vz=.1-Math.random()*.2;
        seed.born=frames;
        seeds.push(seed);
    }
  
    function splode(x,y,z){
  
        t=5+parseInt(Math.random()*150);
        sparkV=1+Math.random()*2.5;
        type=parseInt(Math.random()*3);
        switch(type){
            case 0:
                pic1=parseInt(Math.random()*10);
                break;
            case 1:
                pic1=parseInt(Math.random()*10);
                do{ pic2=parseInt(Math.random()*10); }while(pic2==pic1);
                break;
            case 2:
                pic1=parseInt(Math.random()*10);
                do{ pic2=parseInt(Math.random()*10); }while(pic2==pic1);
                do{ pic3=parseInt(Math.random()*10); }while(pic3==pic1 || pic3==pic2);
                break;
        }
        for(m=1;m<t;++m){
            spark=new Object();
            spark.x=x; spark.y=y; spark.z=z;
            p1=pi*2*Math.random();
            p2=pi*Math.random();
            v=sparkV*(1+Math.random()/6)
            spark.vx=Math.sin(p1)*Math.sin(p2)*v;
            spark.vz=Math.cos(p1)*Math.sin(p2)*v;
            spark.vy=Math.cos(p2)*v;
            switch(type){
                case 0: spark.img=sparkPics[pic1]; break;
                case 1:
                    spark.img=sparkPics[parseInt(Math.random()*2)?pic1:pic2];
                    break;
                case 2:
                    switch(parseInt(Math.random()*3)){
                        case 0: spark.img=sparkPics[pic1]; break;
                        case 1: spark.img=sparkPics[pic2]; break;
                        case 2: spark.img=sparkPics[pic3]; break;
                    }
                    break;
            }
            spark.radius=25+Math.random()*50;
            spark.alpha=1;
            spark.trail=new Array();
            sparks.push(spark);
        }
        switch(parseInt(Math.random()*4)){
            case 0:  pow=new Audio(s+"pow1.ogg"); break;
            case 1:  pow=new Audio(s+"pow2.ogg"); break;
            case 2:  pow=new Audio(s+"pow3.ogg"); break;
            case 3:  pow=new Audio(s+"pow4.ogg"); break;
        }
        d=Math.sqrt((x-playerX)*(x-playerX)+(y-playerY)*(y-playerY)+(z-playerZ)*(z-playerZ));
        pow.volume=1.5/(1+d/10);
        pow.play();
    }
  
    function doLogic(){
  
        if(seedTimer<frames){
            seedTimer=frames+seedInterval*Math.random()*10;
            spawnSeed();
        }
        for(i=0;i<seeds.length;++i){
            seeds[i].vy+=gravity;
            seeds[i].x+=seeds[i].vx;
            seeds[i].y+=seeds[i].vy;
            seeds[i].z+=seeds[i].vz;
            if(frames-seeds[i].born>seedLife){
                splode(seeds[i].x,seeds[i].y,seeds[i].z);
                seeds.splice(i,1);
            }
        }
        for(i=0;i<sparks.length;++i){
            if(sparks[i].alpha>0 && sparks[i].radius>5){
                sparks[i].alpha-=.01;
                sparks[i].radius/=1.02;
                sparks[i].vy+=gravity;
                point=new Object();
                point.x=sparks[i].x;
                point.y=sparks[i].y;
                point.z=sparks[i].z;
                if(sparks[i].trail.length){
                    x=sparks[i].trail[sparks[i].trail.length-1].x;
                    y=sparks[i].trail[sparks[i].trail.length-1].y;
                    z=sparks[i].trail[sparks[i].trail.length-1].z;
                    d=((point.x-x)*(point.x-x)+(point.y-y)*(point.y-y)+(point.z-z)*(point.z-z));
                    if(d>9){
                        sparks[i].trail.push(point);
                    }
                }else{
                    sparks[i].trail.push(point);
                }
                if(sparks[i].trail.length>5)sparks[i].trail.splice(0,1);
                sparks[i].x+=sparks[i].vx;
                sparks[i].y+=sparks[i].vy;
                sparks[i].z+=sparks[i].vz;
                sparks[i].vx/=1.075;
                sparks[i].vy/=1.075;
                sparks[i].vz/=1.075;
            }else{
                sparks.splice(i,1);
            }
        }
        p=Math.atan2(playerX,playerZ);
        d=Math.sqrt(playerX*playerX+playerZ*playerZ);
        d+=Math.sin(frames/80)/1.25;
        t=Math.sin(frames/200)/40;
        playerX=Math.sin(p+t)*d;
        playerZ=Math.cos(p+t)*d;
        yaw=pi+p+t;
    }
  
    function rgb(col){
  
        var r = parseInt((.5+Math.sin(col)*.5)*16);
        var g = parseInt((.5+Math.cos(col)*.5)*16);
        var b = parseInt((.5-Math.sin(col)*.5)*16);
        return "#"+r.toString(16)+g.toString(16)+b.toString(16);
    }
  
    function draw(){
  
        ctx.clearRect(0,0,cx*2,cy*2);
  
        ctx.fillStyle="#ff8";
        for(i=-100;i<100;i+=3){
            for(j=-100;j<100;j+=4){
                x=i;z=j;y=25;
                point=rasterizePoint(x,y,z);
                if(point.d!=-1){
                    size=250/(1+point.d);
                    d = Math.sqrt(x * x + z * z);
                    a = 0.75 - Math.pow(d / 100, 6) * 0.75;
                    if(a>0){
                        ctx.globalAlpha = a;
                        ctx.fillRect(point.x-size/2,point.y-size/2,size,size);
                    }
                }
            }
        }
        ctx.globalAlpha=1;
        for(i=0;i<seeds.length;++i){
            point=rasterizePoint(seeds[i].x,seeds[i].y,seeds[i].z);
            if(point.d!=-1){
                size=200/(1+point.d);
                ctx.fillRect(point.x-size/2,point.y-size/2,size,size);
            }
        }
        point1=new Object();
        for(i=0;i<sparks.length;++i){
            point=rasterizePoint(sparks[i].x,sparks[i].y,sparks[i].z);
            if(point.d!=-1){
                size=sparks[i].radius*200/(1+point.d);
                if(sparks[i].alpha<0)sparks[i].alpha=0;
                if(sparks[i].trail.length){
                    point1.x=point.x;
                    point1.y=point.y;
                    switch(sparks[i].img){
                        case sparkPics[0]:ctx.strokeStyle="#f84";break;
                        case sparkPics[1]:ctx.strokeStyle="#84f";break;
                        case sparkPics[2]:ctx.strokeStyle="#8ff";break;
                        case sparkPics[3]:ctx.strokeStyle="#fff";break;
                        case sparkPics[4]:ctx.strokeStyle="#4f8";break;
                        case sparkPics[5]:ctx.strokeStyle="#f44";break;
                        case sparkPics[6]:ctx.strokeStyle="#f84";break;
                        case sparkPics[7]:ctx.strokeStyle="#84f";break;
                        case sparkPics[8]:ctx.strokeStyle="#fff";break;
                        case sparkPics[9]:ctx.strokeStyle="#44f";break;
                    }
                    for(j=sparks[i].trail.length-1;j>=0;--j){
                        point2=rasterizePoint(sparks[i].trail[j].x,sparks[i].trail[j].y,sparks[i].trail[j].z);
                        if(point2.d!=-1){
                            ctx.globalAlpha=j/sparks[i].trail.length*sparks[i].alpha/2;
                            ctx.beginPath();
                            ctx.moveTo(point1.x,point1.y);
                            ctx.lineWidth=1+sparks[i].radius*10/(sparks[i].trail.length-j)/(1+point2.d);
                            ctx.lineTo(point2.x,point2.y);
                            ctx.stroke();
                            point1.x=point2.x;
                            point1.y=point2.y;
                        }
                    }
                }
                ctx.globalAlpha=sparks[i].alpha;
                ctx.drawImage(sparks[i].img,point.x-size/2,point.y-size/2,size,size);
            }
        }
    }
  
    function frame(){
  
        if(frames>100000){
            seedTimer=0;
            frames=0;
        }
        frames++;
        draw();
        doLogic();
        requestAnimationFrame(frame);
    }
  
    window.addEventListener("resize",()=>{
        canvas.width=canvas.clientWidth;
        canvas.height=canvas.clientHeight;
        cx=canvas.width/2;
        cy=canvas.height/2;
    });
  
    initVars();
    frame();
  
  
  
    var S = {
      init: function () {
        var action = window.location.href,
          i = action.indexOf('?a=');
  
        S.Drawing.init('.canvas');
        document.body.classList.add('body--ready');
  
        if (i !== -1) {
          S.UI.simulate(decodeURI(action).substring(i + 3));
        } else {
          S.UI.simulate('|#countdown 5||2025|新年快乐!|祝你发大财|每天都要开开心心|日子滚烫|人间可爱|#rectangle|');
        }
  
        S.Drawing.loop(function () {
          S.Shape.render();
        });
      }
    };
  
    let audio = document.querySelector('audio')
    setTimeout(() => {
      audio.play()
    }, 5000);
  
  
    S.Drawing = (function () {
      var canvas,
        context,
        renderFn
      requestFrame = window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function (callback) {
          window.setTimeout(callback, 1000 / 60);
        };
  
      return {
        init: function (el) {
          canvas = document.querySelector(el);
          context = canvas.getContext('2d');
          this.adjustCanvas();
  
          window.addEventListener('resize', function (e) {
            S.Drawing.adjustCanvas();
          });
        },
  
        loop: function (fn) {
          renderFn = !renderFn ? fn : renderFn;
          this.clearFrame();
          renderFn();
          requestFrame.call(window, this.loop.bind(this));
        },
  
        adjustCanvas: function () {
          canvas.width = window.innerWidth;
          canvas.height = window.innerHeight;
        },
  
        clearFrame: function () {
          context.clearRect(0, 0, canvas.width, canvas.height);
        },
  
        getArea: function () {
          return { w: canvas.width, h: canvas.height };
        },
  
        drawCircle: function (p, c) {
          context.fillStyle = c.render();
          context.beginPath();
          context.arc(p.x, p.y, p.z, 0, 2 * Math.PI, true);
          context.closePath();
          context.fill();
        }
      }
    }());
  
  
    S.UI = (function () {
      var canvas = document.querySelector('.canvas'),
        interval,
        isTouch = false,
        currentAction,
        resizeTimer,
        time,
        maxShapeSize = 30,
        firstAction = true,
        sequence = [],
        cmd = '#';
  
      function formatTime(date) {
        var h = date.getHours(),
          m = date.getMinutes(),
          m = m < 10 ? '0' + m : m;
        return h + ':' + m;
      }
  
      function getValue(value) {
        return value && value.split(' ')[1];
      }
  
      function getAction(value) {
        value = value && value.split(' ')[0];
        return value && value[0] === cmd && value.substring(1);
      }
  
      function timedAction(fn, delay, max, reverse) {
        clearInterval(interval);
        currentAction = reverse ? max : 1;
        fn(currentAction);
  
        if (!max || (!reverse && currentAction < max) || (reverse && currentAction > 0)) {
          interval = setInterval(function () {
            currentAction = reverse ? currentAction - 1 : currentAction + 1;
            fn(currentAction);
  
            if ((!reverse && max && currentAction === max) || (reverse && currentAction === 0)) {
              clearInterval(interval);
            }
          }, delay);
        }
      }
  
      function reset(destroy) {
        clearInterval(interval);
        sequence = [];
        time = null;
        destroy && S.Shape.switchShape(S.ShapeBuilder.letter(''));
      }
  
      function performAction(value) {
        var action,
          value,
          current;
  
  
        sequence = typeof (value) === 'object' ? value : sequence.concat(value.split('|'));
  
        timedAction(function (index) {
          current = sequence.shift();
          action = getAction(current);
          value = getValue(current);
  
          switch (action) {
            case 'countdown':
              value = parseInt(value) || 10;
              value = value > 0 ? value : 10;
  
              timedAction(function (index) {
                if (index === 0) {
                  if (sequence.length === 0) {
                    S.Shape.switchShape(S.ShapeBuilder.letter(''));
                  } else {
                    performAction(sequence);
                  }
                } else {
                  S.Shape.switchShape(S.ShapeBuilder.letter(index), true);
                }
              }, 1000, value, true);
              break;
  
            case 'rectangle':
              value = value && value.split('x');
              value = (value && value.length === 2) ? value : [maxShapeSize, maxShapeSize / 2];
  
              S.Shape.switchShape(S.ShapeBuilder.rectangle(Math.min(maxShapeSize, parseInt(value[0])), Math.min(maxShapeSize, parseInt(value[1]))));
              break;
  
            case 'circle':
              value = parseInt(value) || maxShapeSize;
              value = Math.min(value, maxShapeSize);
              S.Shape.switchShape(S.ShapeBuilder.circle(value));
              break;
  
            case 'time':
              var t = formatTime(new Date());
  
              if (sequence.length > 0) {
                S.Shape.switchShape(S.ShapeBuilder.letter(t));
              } else {
                timedAction(function () {
                  t = formatTime(new Date());
                  if (t !== time) {
                    time = t;
                    S.Shape.switchShape(S.ShapeBuilder.letter(time));
                  }
                }, 1000);
              }
              break;
  
            default:
              S.Shape.switchShape(S.ShapeBuilder.letter(current[0] === cmd ? 'What?' : current));
          }
        }, 2000, sequence.length);
      }
  
      function checkInputWidth(e) {
        if (input.value.length > 18) {
          ui.classList.add('ui--wide');
        } else {
          ui.classList.remove('ui--wide');
        }
  
        if (firstAction && input.value.length > 0) {
          ui.classList.add('ui--enter');
        } else {
          ui.classList.remove('ui--enter');
        }
      }
  
      function bindEvents() {
        document.body.addEventListener('keydown', function (e) {
          input.focus();
  
          if (e.keyCode === 13) {
            firstAction = false;
            reset();
            performAction(input.value);
          }
        });
  
  
        canvas.addEventListener('click', function (e) {
          overlay.classList.remove('overlay--visible');
        });
      }
  
      function init() {
        bindEvents();
        isTouch && document.body.classList.add('touch');
      }
  
      init();
  
      return {
        simulate: function (action) {
          performAction(action);
        }
      }
    }());
  
  
    S.UI.Tabs = (function () {
      var tabs = document.querySelector('.tabs'),
        labels = document.querySelector('.tabs-labels'),
        triggers = document.querySelectorAll('.tabs-label'),
        panels = document.querySelectorAll('.tabs-panel');
  
      function activate(i) {
        triggers[i].classList.add('tabs-label--active');
        panels[i].classList.add('tabs-panel--active');
      }
  
      function bindEvents() {
        labels.addEventListener('click', function (e) {
          var el = e.target,
            index;
  
          if (el.classList.contains('tabs-label')) {
            for (var t = 0; t < triggers.length; t++) {
              triggers[t].classList.remove('tabs-label--active');
              panels[t].classList.remove('tabs-panel--active');
  
              if (el === triggers[t]) {
                index = t;
              }
            }
  
            activate(index);
          }
        });
      }
  
      function init() {
        activate(0);
        bindEvents();
      }
  
      // Init
      init();
    }());
  
  
    S.Point = function (args) {
      this.x = args.x;
      this.y = args.y;
      this.z = args.z;
      this.a = args.a;
      this.h = args.h;
    };
  
  
    S.Color = function (r, g, b, a) {
      this.r = r;
      this.g = g;
      this.b = b;
      this.a = a;
    };
  
    S.Color.prototype = {
      render: function () {
        return 'rgba(' + this.r + ',' + + this.g + ',' + this.b + ',' + this.a + ')';
      }
    };
  
  
    S.Dot = function (x, y) {
      this.p = new S.Point({
        x: x,
        y: y,
        z: 5,
        a: 1,
        h: 0
      });
  
      this.e = 0.07;
      this.s = true;
  
      this.c = new S.Color(255, 255, 255, this.p.a);
  
      this.t = this.clone();
      this.q = [];
    };
  
    S.Dot.prototype = {
      clone: function () {
        return new S.Point({
          x: this.x,
          y: this.y,
          z: this.z,
          a: this.a,
          h: this.h
        });
      },
  
      _draw: function () {
        this.c.a = this.p.a;
        S.Drawing.drawCircle(this.p, this.c);
      },
  
      _moveTowards: function (n) {
        var details = this.distanceTo(n, true),
          dx = details[0],
          dy = details[1],
          d = details[2],
          e = this.e * d;
  
        if (this.p.h === -1) {
          this.p.x = n.x;
          this.p.y = n.y;
          return true;
        }
  
        if (d > 1) {
          this.p.x -= ((dx / d) * e);
          this.p.y -= ((dy / d) * e);
        } else {
          if (this.p.h > 0) {
            this.p.h--;
          } else {
            return true;
          }
        }
  
        return false;
      },
  
      _update: function () {
        if (this._moveTowards(this.t)) {
          var p = this.q.shift();
  
          if (p) {
            this.t.x = p.x || this.p.x;
            this.t.y = p.y || this.p.y;
            this.t.z = p.z || this.p.z;
            this.t.a = p.a || this.p.a;
            this.p.h = p.h || 0;
          } else {
            if (this.s) {
              this.p.x -= Math.sin(Math.random() * 3.142);
              this.p.y -= Math.sin(Math.random() * 3.142);
            } else {
              this.move(new S.Point({
                x: this.p.x + (Math.random() * 50) - 25,
                y: this.p.y + (Math.random() * 50) - 25,
              }));
            }
          }
        }
  
        d = this.p.a - this.t.a;
        this.p.a = Math.max(0.1, this.p.a - (d * 0.05));
        d = this.p.z - this.t.z;
        this.p.z = Math.max(1, this.p.z - (d * 0.05));
      },
  
      distanceTo: function (n, details) {
        var dx = this.p.x - n.x,
          dy = this.p.y - n.y,
          d = Math.sqrt(dx * dx + dy * dy);
  
        return details ? [dx, dy, d] : d;
      },
  
      move: function (p, avoidStatic) {
        if (!avoidStatic || (avoidStatic && this.distanceTo(p) > 1)) {
          this.q.push(p);
        }
      },
  
      render: function () {
        this._update();
        this._draw();
      }
    }
  
  
    S.ShapeBuilder = (function () {
      var gap = 13,
        shapeCanvas = document.createElement('canvas'),
        shapeContext = shapeCanvas.getContext('2d'),
        fontSize = 500,
        fontFamily = 'Avenir, Helvetica Neue, Helvetica, Arial, sans-serif';
  
      function fit() {
        shapeCanvas.width = Math.floor(window.innerWidth / gap) * gap;
        shapeCanvas.height = Math.floor(window.innerHeight / gap) * gap;
        shapeContext.fillStyle = 'red';
        shapeContext.textBaseline = 'middle';
        shapeContext.textAlign = 'center';
      }
  
      function processCanvas() {
        var pixels = shapeContext.getImageData(0, 0, shapeCanvas.width, shapeCanvas.height).data;
        dots = [],
          pixels,
          x = 0,
          y = 0,
          fx = shapeCanvas.width,
          fy = shapeCanvas.height,
          w = 0,
          h = 0;
  
        for (var p = 0; p < pixels.length; p += (4 * gap)) {
          if (pixels[p + 3] > 0) {
            dots.push(new S.Point({
              x: x,
              y: y
            }));
  
            w = x > w ? x : w;
            h = y > h ? y : h;
            fx = x < fx ? x : fx;
            fy = y < fy ? y : fy;
          }
  
          x += gap;
  
          if (x >= shapeCanvas.width) {
            x = 0;
            y += gap;
            p += gap * 4 * shapeCanvas.width;
          }
        }
  
        return { dots: dots, w: w + fx, h: h + fy };
      }
  
      function setFontSize(s) {
        shapeContext.font = 'bold ' + s + 'px ' + fontFamily;
      }
  
      function isNumber(n) {
        return !isNaN(parseFloat(n)) && isFinite(n);
      }
  
      function init() {
        fit();
        window.addEventListener('resize', fit);
      }
  
      // Init
      init();
  
      return {
        imageFile: function (url, callback) {
          var image = new Image(),
            a = S.Drawing.getArea();
  
          image.onload = function () {
            shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
            shapeContext.drawImage(this, 0, 0, a.h * 0.6, a.h * 0.6);
            callback(processCanvas());
          };
  
          image.onerror = function () {
            callback(S.ShapeBuilder.letter('What?'));
          }
  
          image.src = url;
        },
  
        circle: function (d) {
          var r = Math.max(0, d) / 2;
          shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
          shapeContext.beginPath();
          shapeContext.arc(r * gap, r * gap, r * gap, 0, 2 * Math.PI, false);
          shapeContext.fill();
          shapeContext.closePath();
  
          return processCanvas();
        },
  
        letter: function (l) {
          var s = 0;
  
          setFontSize(fontSize);
          s = Math.min(fontSize,
            (shapeCanvas.width / shapeContext.measureText(l).width) * 0.8 * fontSize,
            (shapeCanvas.height / fontSize) * (isNumber(l) ? 1 : 0.45) * fontSize);
          setFontSize(s);
  
          shapeContext.clearRect(0, 0, shapeCanvas.width, shapeCanvas.height);
          shapeContext.fillText(l, shapeCanvas.width / 2, shapeCanvas.height / 2);
  
          return processCanvas();
        },
  
        rectangle: function (w, h) {
          var dots = [],
            width = gap * w,
            height = gap * h;
  
          for (var y = 0; y < height; y += gap) {
            for (var x = 0; x < width; x += gap) {
              dots.push(new S.Point({
                x: x,
                y: y,
              }));
            }
          }
  
          return { dots: dots, w: width, h: height };
        }
      };
    }());
  
  
    S.Shape = (function () {
      var dots = [],
        width = 0,
        height = 0,
        cx = 0,
        cy = 0;
  
      function compensate() {
        var a = S.Drawing.getArea();
  
        cx = a.w / 2 - width / 2;
        cy = a.h / 2 - height / 2;
      }
  
      return {
        shuffleIdle: function () {
          var a = S.Drawing.getArea();
  
          for (var d = 0; d < dots.length; d++) {
            if (!dots[d].s) {
              dots[d].move({
                x: Math.random() * a.w,
                y: Math.random() * a.h
              });
            }
          }
        },
  
        switchShape: function (n, fast) {
          var size,
            a = S.Drawing.getArea();
  
          width = n.w;
          height = n.h;
  
          compensate();
  
          if (n.dots.length > dots.length) {
            size = n.dots.length - dots.length;
            for (var d = 1; d <= size; d++) {
              dots.push(new S.Dot(a.w / 2, a.h / 2));
            }
          }
  
          var d = 0,
            i = 0;
  
          while (n.dots.length > 0) {
            i = Math.floor(Math.random() * n.dots.length);
            dots[d].e = fast ? 0.25 : (dots[d].s ? 0.14 : 0.11);
  
            if (dots[d].s) {
              dots[d].move(new S.Point({
                z: Math.random() * 20 + 10,
                a: Math.random(),
                h: 18
              }));
            } else {
              dots[d].move(new S.Point({
                z: Math.random() * 5 + 5,
                h: fast ? 18 : 30
              }));
            }
  
            dots[d].s = true;
            dots[d].move(new S.Point({
              x: n.dots[i].x + cx,
              y: n.dots[i].y + cy,
              a: 1,
              z: 5,
              h: 0
            }));
  
            n.dots = n.dots.slice(0, i).concat(n.dots.slice(i + 1));
            d++;
          }
  
          for (var i = d; i < dots.length; i++) {
            if (dots[i].s) {
              dots[i].move(new S.Point({
                z: Math.random() * 20 + 10,
                a: Math.random(),
                h: 20
              }));
  
              dots[i].s = false;
              dots[i].e = 0.04;
              dots[i].move(new S.Point({
                x: Math.random() * a.w,
                y: Math.random() * a.h,
                a: 0.3, //.4
                z: Math.random() * 4,
                h: 0
              }));
            }
          }
        },
  
        render: function () {
          for (var d = 0; d < dots.length; d++) {
            dots[d].render();
          }
        }
      }
    }());
  
  
    S.init();
</script>
    <script src="js/index.js"></script>
  
  
  
    </body></html>

*内容来源于网络,仅供学习

lt, gt
小时候,看腻了农村的牛和马,长大后,来到了城里,才知道原来到处都是牛马!
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