Node.js 시뮬레이션 3D 장면 효과 코드 Packaging_javascript 기술

2차원 공간에서 3차원 효과를 시뮬레이션하려면 3차원 좌표를 2차원 좌표로 변환해야 합니다. 가장 기본적인 기초 중 하나는 멀리 있는 물체일수록 크기가 작아지고, 좌표가 소실점에 가까워진다는 것입니다.
원근 공식:
Scale = fl / (fl z);
Scale은 크기 비율(0.0과 1.0 사이)이며 fl은 관찰 지점에서 이미징 표면까지의 거리이며 일반적으로 이 값은 다음과 같습니다. 고정된 경우 z는 물체의 3차원 공간에서 z축입니다.
이 코드를 작성하기 전에 저는 제가 쓰는 것을 설명하기 위해 객체 지향을 사용하는 것을 좋아합니다. 예를 들어 장면은 공간이며, 객체는 객체입니다. 객체는 x입니다. , y 및 z의 3차원에서는 장면에 원하는 수의 객체를 삽입할 수 있으며 객체는 좌표 값을 기반으로 장면의 특정 위치에 표시됩니다. 물체의 위치.
일부 데모의 경우 마우스 움직임과 스크롤 휠을 사용하여 제어하세요.
효과 1

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>의사 3D 원근 효과</title> <style> html,body{ padding:0px; margin:0px; height:100%; width:100%;overflow:hidden;} #box{ background:#ccc; height:100%; border:1px solid #ccc;position:relative; overflow:hidden;} #debug{ width:200px; background:#fff; border:1px solid #ccc; position:absolute; left:10px; top:0px;} </style> <div id="box"> </div> <div id="debug"></div>
[Ctrl A 모두 선택 참고: 외부 J를 도입해야 하는 경우 실행하려면 새로 고쳐야 합니다.

]

효과 2

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title> </title>의사 3D 원근 효과<style> html,body{ padding:0px; margin:0px; height:100%; width:100%;overflow:hidden;} #box{ background:#ccc; height:100%; border:1px solid #ccc;position:relative; overflow:hidden;} #debug{ width:200px; background:#fff; border:1px solid #ccc; position:absolute; left:10px; top:0px;} </style> <div id="box"> </div> <div id="debug"> </div>
[Ctrl A 모두 선택 참고:

외부 J를 도입해야 하는 경우 실행하려면 새로 고쳐야 합니다.
]

효과 3 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title> </title> <style> html,body{ padding:0px; margin:0px; height:100%; width:100%;overflow:hidden;} #box{ background:#fff; height:100%; border:1px solid #ccc;position:relative; overflow:hidden;} #debug{ width:200px; background:#fff; border:1px solid #ccc; position:absolute; left:10px; top:0px;} </style>의사 3D 원근 효과 <div id="box"> </div> <div id="debug"> </div>

[Ctrl A 모두 선택 참고:
외부 J를 도입해야 하는 경우 실행하려면 새로 고쳐야 합니다.
]

효과 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title> </title> <style> html,body{ padding:0px; margin:0px; height:100%; width:100%;overflow:hidden;} #box{ background:#ccc; height:100%; border:1px solid #ccc;position:relative; overflow:hidden;} #debug{ width:200px; background:#fff; border:1px solid #ccc; position:absolute; left:10px; top:0px;} </style> 의사 3D 원근 효과 <div id="box"> </div> <div id="debug"> </div>

<script> void function(window){ var document = window.document; var debug = document.getElementById('debug'); function ObjtoStr(obj){ var arr = []; for(var i in obj){ if(isNaN(obj[i])) continue; arr.push(i + ':' + obj[i]); } return arr.join('; '); } function getElementOffset(element){ var left = 0, top = 0; do{ left += element.offsetLeft; top += element.offsetTop; }while(element = element.offsetParent); return { left:left, top:top }; } function getMouseOffset(event){ return { x:(event.pageX || event.clientX + document.body.scrollLeft - document.body.clientLeft), y:(event.pageY || event.clientY + document.body.scrollTop - document.body.clientTop) }; } function addEventListener(element,type,fun){ if(element.addEventListener){ element.addEventListener(type,function(event){ fun(event); },false); }else{ element.attachEvent('on'+type,function(){ fun(window.event); }); } } function extend(subClass,supClass){ var fun = function(){}, prototype = subClass.prototype; fun.prototype = supClass.prototype; subClass.prototype = new fun(); for(var i in prototype){ subClass.prototype[i] = prototype[i]; } subClass.$supClass = supClass; subClass.prototype.$supClass = function(){ var supClass = arguments.callee.caller.$supClass; if(typeof supClass == 'function'){ supClass.apply(this,arguments); this.$supClass = supClass; } }; subClass.prototype.constructor = subClass; return subClass; } /** * WH类，高宽 */ function WH(w,h){ this.w = w; this.h = h; } WH.prototype = { clone:function(){ return new WH(this.w,this.h); } }; /** * xyz坐标类 * */ function XYZ(x,y,z){ this.x = x; this.y = y; this.z = z; } XYZ.prototype = { clone:function(){ return new XYZ(this.x,this.y,this.z); } }; /** * 场景类 */ function Scene(options){ //属性 //dom this.element = null; //场景距离 this.fl = 500; this.wh = null; //基准z轴 this.baseZ = 0; //中心消失点坐标 this.cX = 0; this.cY = 0; //中心消失点便宜 this.cXl = 0; this.cYl = 0; //偏移系数 this.ce = 1; this.ThingList = []; this.setOption(options); this.init(); } Scene.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'element': this[i] = typeof options[i] == 'string' ? document.getElementById(options[i]) : options[i]; break; } } }, init:function(){ if(!this.element) throw new Error(90,'not box'); this.wh = new WH(this.element.clientWidth,this.element.clientHeight); this.bindEvent(); }, addThing:function(/* Thing */ thing){ this.ThingList.push(thing); this.calcPosition(thing); this.element.appendChild(thing.getElement(this)); }, //计算位置及大小 calcPosition:function(/*Thing*/ thing){ this.cX = this.element.clientWidth/2; this.cY = this.element.clientHeight/2; scale = this.fl/(this.fl + thing.xyz.z+this.baseZ); if(scale <= 0){ thing.element.style.display = 'none'; return ; }else{ thing.element.style.display = ''; } thing.element.style.width = thing.wh.w * scale + 'px'; thing.element.style.height = thing.wh.h * scale + 'px'; thing.element.style.top = (this.cY + ((thing.xyz.y+this.cYl-this.cY) * scale)) + 'px'; thing.element.style.left = (this.cX + ((thing.xyz.x+this.cXl-this.cX) * scale)) + 'px'; thing.element.style.zIndex = Math.round(scale*1000); if(thing.isOpacity){ thing.element.style.opacity = Math.min(scale*4.5,1); thing.element.style.filter = 'alpha(opacity='+(Math.min(scale*4.5,1) * 100)+')'; } }, bindEvent:function(){ var self = this; addEventListener(this.element,'mousemove',function(event){ self.onMouseMove(event); }); var mousewheel = navigator.userAgent.indexOf('Firefox') > 0 ? 'DOMMouseScroll' : 'mousewheel'; addEventListener(this.element,mousewheel,function(event){ self.onMouseWheel(event); }); }, //在场景内移动事件 onMouseMove:function(event){ //场景的页面坐标 var po = getElementOffset(this.element); //鼠标光标的页面坐标 var ev = getMouseOffset(event); //场景内坐标 var x = ev.x-po.left; var y = ev.y-po.top; //中间消失点的坐标偏移差 this.cXl = (this.element.clientWidth/2 - x) * this.ce; this.cYl = (this.element.clientHeight/2 - y) * this.ce; this.reDraw(); }, onMouseWheel:function(event){ var code = event.wheelDelta || -event.detail; if(code > 0){ this.baseZ -= 200; }else{ this.baseZ += 200; } this.reDraw(); }, reDraw:function(){ for(var i=0 ; i<this.ThingList.length;i++){ this.calcPosition(this.ThingList[i]); } } }; /** * 物件抽象类 */ function Thing(options){ this.scene = null; this.wh = new WH(10,10); this.xyz = new XYZ(10,10,0); this.element = null; this.isOpacity = true; this.setOption(options); this.init(); } Thing.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'wh': case 'xyz': case 'isOpacity': this[i] = options[i]; break; default: break; } } }, init:function(){ this.element = this.draw(); this.element.style.position = 'absolute'; this.element.style.width = this.wh.w + 'px'; this.element.style.height = this.wh.h + 'px'; }, draw:function(){ throw new Error(998,'method do not realize!'); }, getElement:function(/*Scene*/ scene){ this.scene = scene; return this.element; } }; function Diam(options){ this.$supClass(options); } Diam.prototype = { draw:function(){ var img = document.createElement('img'); loadimg = img.cloneNode(true); loadimg.onload = function(){ self.wh = new WH(this.width,this.height); } img.src = [ '/upload/201201/20120105103758227.jpg', '/upload/201201/20120105103801969.jpg', '/upload/201201/20120105103801207.jpg', '/upload/201201/20120105103801956.jpg', '/upload/201201/20120105103801732.jpg', '/upload/201201/20120105103801346.jpg', '/upload/201201/20120105103801362.jpg' ][Math.round(Math.random()*6)]; return img; } }; extend(Diam,Thing); function Sky(options){ this.$supClass(options); } Sky.prototype = { draw:function(){ var img = document.createElement('img'); img.src = [ '/upload/201201/20120105103801314.jpg', '/upload/201201/20120105103803325.jpg', '/upload/201201/20120105103803314.jpg', '/upload/201201/20120105103803146.jpg' ][Math.round(Math.random()*3)]; return img; } }; extend(Sky,Thing); var scene = new Scene({ 'element':'box' }); for(var i= 0 ; i < 50 ;i++){ scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(Math.random() * document.body.clientWidth,Math.random() *document.body.clientHeight,Math.random() *8000) })); } scene.addThing(new Sky({ wh:new WH(160000,120000), xyz:new XYZ(-80000,-60000,54000), isOpacity:false })); }(window); </script>[Ctrl A 모두 선택 참고: <script> void function(window){ var document = window.document; var debug = document.getElementById('debug'); function ObjtoStr(obj){ var arr = []; for(var i in obj){ if(isNaN(obj[i])) continue; arr.push(i + ':' + obj[i]); } return arr.join('; '); } function getElementOffset(element){ var left = 0, top = 0; do{ left += element.offsetLeft; top += element.offsetTop; }while(element = element.offsetParent); return { left:left, top:top }; } function getMouseOffset(event){ return { x:(event.pageX || event.clientX + document.body.scrollLeft - document.body.clientLeft), y:(event.pageY || event.clientY + document.body.scrollTop - document.body.clientTop) }; } function addEventListener(element,type,fun){ if(element.addEventListener){ element.addEventListener(type,function(event){ fun(event); },false); }else{ element.attachEvent('on'+type,function(){ fun(window.event); }); } } function extend(subClass,supClass){ var fun = function(){}, prototype = subClass.prototype; fun.prototype = supClass.prototype; subClass.prototype = new fun(); for(var i in prototype){ subClass.prototype[i] = prototype[i]; } subClass.$supClass = supClass; subClass.prototype.$supClass = function(){ var supClass = arguments.callee.caller.$supClass; if(typeof supClass == 'function'){ supClass.apply(this,arguments); this.$supClass = supClass; } }; subClass.prototype.constructor = subClass; return subClass; } /** * WH类，高宽 */ function WH(w,h){ this.w = w; this.h = h; } WH.prototype = { clone:function(){ return new WH(this.w,this.h); } }; /** * xyz坐标类 * */ function XYZ(x,y,z){ this.x = x; this.y = y; this.z = z; } XYZ.prototype = { clone:function(){ return new XYZ(this.x,this.y,this.z); } }; /** * 场景类 */ function Scene(options){ //属性 //dom this.element = null; //场景距离 this.fl = 500; this.wh = null; //基准z轴 this.baseZ = 0; //中心消失点坐标 this.cX = 0; this.cY = 0; //中心消失点便宜 this.cXl = 0; this.cYl = 0; //偏移系数 this.ce = 5; this.ThingList = []; this.setOption(options); this.init(); } Scene.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'element': this[i] = typeof options[i] == 'string' ? document.getElementById(options[i]) : options[i]; break; } } }, init:function(){ if(!this.element) throw new Error(90,'not box'); this.wh = new WH(this.element.clientWidth,this.element.clientHeight); this.bindEvent(); }, addThing:function(/* Thing */ thing){ this.ThingList.push(thing); this.calcPosition(thing); this.element.appendChild(thing.getElement(this)); }, //计算位置及大小 calcPosition:function(/*Thing*/ thing){ this.cX = this.element.clientWidth/2; this.cY = this.element.clientHeight/2; scale = this.fl/(this.fl + thing.xyz.z+this.baseZ); if(scale <= 0){ thing.element.style.display = 'none'; return ; }else{ thing.element.style.display = ''; } thing.element.style.width = thing.wh.w * scale + 'px'; thing.element.style.height = thing.wh.h * scale + 'px'; thing.element.style.top = (this.cY + ((thing.xyz.y+this.cYl-this.cY) * scale)) + 'px'; thing.element.style.left = (this.cX + ((thing.xyz.x+this.cXl-this.cX) * scale)) + 'px'; thing.element.style.zIndex = Math.round(scale*1000); if(thing.isOpacity){ thing.element.style.opacity = Math.min(scale*4.5,1); thing.element.style.filter = 'alpha(opacity='+(Math.min(scale*4.5,1) * 100)+')'; } }, bindEvent:function(){ var self = this; addEventListener(this.element,'mousemove',function(event){ self.onMouseMove(event); }); var mousewheel = navigator.userAgent.indexOf('Firefox') > 0 ? 'DOMMouseScroll' : 'mousewheel'; addEventListener(this.element,mousewheel,function(event){ self.onMouseWheel(event); }); }, //在场景内移动事件 onMouseMove:function(event){ //场景的页面坐标 var po = getElementOffset(this.element); //鼠标光标的页面坐标 var ev = getMouseOffset(event); //场景内坐标 var x = ev.x-po.left; var y = ev.y-po.top; //中间消失点的坐标偏移差 this.cXl = (this.element.clientWidth/2 - x) * this.ce; this.cYl = (this.element.clientHeight/2 - y) * this.ce; this.reDraw(); }, onMouseWheel:function(event){ var code = event.wheelDelta || -event.detail; if(code > 0){ this.baseZ -= 200; }else{ this.baseZ += 200; } this.reDraw(); }, reDraw:function(){ for(var i=0 ; i<this.ThingList.length;i++){ this.calcPosition(this.ThingList[i]); } } }; /** * 物件抽象类 */ function Thing(options){ this.scene = null; this.wh = new WH(10,10); this.xyz = new XYZ(10,10,0); this.element = null; this.isOpacity = true; this.setOption(options); this.init(); } Thing.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'wh': case 'xyz': case 'isOpacity': this[i] = options[i]; break; default: break; } } }, init:function(){ this.element = this.draw(); this.element.style.position = 'absolute'; this.element.style.width = this.wh.w + 'px'; this.element.style.height = this.wh.h + 'px'; }, draw:function(){ throw new Error(998,'method do not realize!'); }, getElement:function(/*Scene*/ scene){ this.scene = scene; return this.element; } }; function Diam(options){ this.$supClass(options); } Diam.prototype = { draw:function(){ var img = document.createElement('img'); loadimg = img.cloneNode(true); loadimg.onload = function(){ self.wh = new WH(this.width,this.height); } img.src = [ '/upload/201201/20120105103758227.jpg', '/upload/201201/20120105103801969.jpg', '/upload/201201/20120105103801207.jpg', '/upload/201201/20120105103801956.jpg', '/upload/201201/20120105103801732.jpg', '/upload/201201/20120105103801346.jpg', '/upload/201201/20120105103801362.jpg' ][Math.round(Math.random()*6)]; return img; } }; extend(Diam,Thing); function Sky(options){ this.$supClass(options); } Sky.prototype = { draw:function(){ var img = document.createElement('img'); img.src = [ '/upload/201201/20120105103801314.jpg', '/upload/201201/20120105103803325.jpg', '/upload/201201/20120105103803314.jpg', '/upload/201201/20120105103803146.jpg' ][Math.round(Math.random()*3)]; return img; } }; extend(Sky,Thing); var scene = new Scene({ 'element':'box' }); for(var i= 0,x,z ; i < 50 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+500; y = (Math.cos(Math.PI*2*(i/50)) * 1000)+500; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,3000) })); } for(var i= 0,x,z ; i < 50 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+500; z = (Math.cos(Math.PI*2*(i/50)) * 1000)+3000; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,document.body.clientHeight/2+200,z) })); } scene.addThing(new Sky({ wh:new WH(160000,120000), xyz:new XYZ(-80000,-60000,54000), isOpacity:false })); }(window); </script>외부 J를 도입해야 하는 경우 실행하려면 새로 고쳐야 합니다 <script> void function(window){ /** * by Od 2011/12/25 */ var document = window.document; var debug = document.getElementById('debug'); function ObjtoStr(obj){ var arr = []; for(var i in obj){ if(isNaN(obj[i])) continue; arr.push(i + ':' + obj[i]); } return arr.join('; '); } function getElementOffset(element){ var left = 0, top = 0; do{ left += element.offsetLeft; top += element.offsetTop; }while(element = element.offsetParent); return { left:left, top:top }; } function getMouseOffset(event){ return { x:(event.pageX || event.clientX + document.body.scrollLeft - document.body.clientLeft), y:(event.pageY || event.clientY + document.body.scrollTop - document.body.clientTop) }; } function addEventListener(element,type,fun){ if(element.addEventListener){ element.addEventListener(type,function(event){ fun(event); },false); }else{ element.attachEvent('on'+type,function(){ fun(window.event); }); } } function extend(subClass,supClass){ var fun = function(){}, prototype = subClass.prototype; fun.prototype = supClass.prototype; subClass.prototype = new fun(); for(var i in prototype){ subClass.prototype[i] = prototype[i]; } subClass.$supClass = supClass; subClass.prototype.$supClass = function(){ var supClass = arguments.callee.caller.$supClass; if(typeof supClass == 'function'){ supClass.apply(this,arguments); this.$supClass = supClass; } }; subClass.prototype.constructor = subClass; return subClass; } /** * WH类，高宽 */ function WH(w,h){ this.w = w; this.h = h; } WH.prototype = { clone:function(){ return new WH(this.w,this.h); } }; /** * xyz坐标类 * */ function XYZ(x,y,z){ this.x = x; this.y = y; this.z = z; } XYZ.prototype = { clone:function(){ return new XYZ(this.x,this.y,this.z); } }; /** * 场景类 */ function Scene(options){ //属性 //dom this.element = null; //场景距离 this.fl = 500; this.wh = null; //基准z轴 this.baseZ = 0; //中心消失点坐标 this.cX = 0; this.cY = 0; //中心消失点便宜 this.cXl = 0; this.cYl = 0; //偏移系数 this.ce = 1; this.ThingList = []; this.setOption(options); this.init(); } Scene.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'element': this[i] = typeof options[i] == 'string' ? document.getElementById(options[i]) : options[i]; break; } } }, init:function(){ if(!this.element) throw new Error(90,'not box'); this.wh = new WH(this.element.clientWidth,this.element.clientHeight); this.bindEvent(); }, addThing:function(/* Thing */ thing){ this.ThingList.push(thing); this.calcPosition(thing); this.element.appendChild(thing.getElement(this)); }, //计算位置及大小 calcPosition:function(/*Thing*/ thing){ this.cX = this.element.clientWidth/2; this.cY = this.element.clientHeight/2; scale = this.fl/(this.fl + thing.xyz.z+this.baseZ); if(scale <= 0){ thing.element.style.display = 'none'; return ; }else{ thing.element.style.display = ''; } thing.element.style.width = thing.wh.w * scale + 'px'; thing.element.style.height = thing.wh.h * scale + 'px'; thing.element.style.top = (this.cY + ((thing.xyz.y+this.cYl-this.cY) * scale)) + 'px'; thing.element.style.left = (this.cX + ((thing.xyz.x+this.cXl-this.cX) * scale)) + 'px'; thing.element.style.zIndex = Math.round(scale*1000); thing.element.style.opacity = Math.min(scale*4.5,1); thing.element.style.filter = 'alpha(opacity='+(Math.min(scale*4.5,1) * 100)+')'; }, bindEvent:function(){ var self = this; addEventListener(this.element,'mousemove',function(event){ self.onMouseMove(event); }); var mousewheel = navigator.userAgent.indexOf('Firefox') > 0 ? 'DOMMouseScroll' : 'mousewheel'; addEventListener(this.element,mousewheel,function(event){ self.onMouseWheel(event); }); setInterval(function(){ self.onEnterFrame(); },40); }, //在场景内移动事件 onMouseMove:function(event){ //场景的页面坐标 var po = getElementOffset(this.element); //鼠标光标的页面坐标 var ev = getMouseOffset(event); //场景内坐标 var x = ev.x-po.left; var y = ev.y-po.top; //中间消失点的坐标偏移差 this.cXl = (this.element.clientWidth/2 - x) * this.ce; this.cYl = (this.element.clientHeight/2 - y) * this.ce; this.reDraw(); }, onMouseWheel:function(event){ var code = event.wheelDelta || -event.detail; if(code > 0){ this.baseZ -= 200; }else{ this.baseZ += 200; } this.reDraw(); }, onEnterFrame:function(){ var thing; for(var i=0; i<this.ThingList.length;i++){ thing = this.ThingList[i]; if(thing.isstatic) continue; if(thing.xyz.y+1 >this.wh.h){ thing.xyz.y = 0; }else{ thing.xyz.y += 20; } this.calcPosition(thing); } }, reDraw:function(){ for(var i=0 ; i<this.ThingList.length;i++){ this.calcPosition(this.ThingList[i]); } } }; /** * 物件抽象类 */ function Thing(options){ this.scene = null; this.wh = null; this.xyz = new XYZ(10,10,0); this.element = null; this.isstatic = false; this.setOption(options); this.init(); } Thing.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'wh': case 'xyz': case 'isstatic': this[i] = options[i]; break; default: break; } } }, init:function(){ this.element = this.draw(); this.element.style.position = 'absolute'; this.element.style.width = this.wh.w + 'px'; this.element.style.height = this.wh.h + 'px'; }, draw:function(){ throw new Error(998,'method do not realize!'); }, getElement:function(/*Scene*/ scene){ this.scene = scene; return this.element; } }; function Snowflake(options){ this.$supClass(options); } Snowflake.prototype = { draw:function(){ var img = document.createElement('img'),self = this; loadimg = img.cloneNode(true); loadimg.onload = function(){ //self.wh = new WH(this.width,this.height); } img.src = loadimg.src = [ '/upload/201201/20120105103804884.gif', '/upload/201201/20120105103804792.gif', '/upload/201201/20120105103804222.gif', '/upload/201201/20120105103804213.gif', '/upload/201201/20120105103804180.gif', '/upload/201201/20120105103804588.gif' ][Math.round(Math.random()*5)]; return img; } }; extend(Snowflake,Thing); var scene = new Scene({ 'element':'box' }); function tree(options){ this.$supClass(options); } tree.prototype = { draw:function(){ var img = document.createElement('img'),self = this; img.src = '/upload/201201/20120105103804497.gif'; return img; } }; extend(tree,Thing); for(var i= 0,x,z ; i < 100 ;i++){ scene.addThing(new Snowflake({ wh:new WH(50,50), xyz:new XYZ(Math.round(Math.random()*document.body.clientWidth),Math.round(Math.random()*document.body.clientHeight),Math.round(Math.random()*6000-1000)) })); } for(var i= 0,x,z ; i < 80 ;i++){ scene.addThing(new tree({ wh:new WH(500,800), isstatic:true, xyz:new XYZ(Math.round(Math.random()*document.body.clientWidth),Math.round(document.body.clientHeight),Math.round(Math.random()*6000-1000)) })); } for(var i= 0,x,z ; i < 80 ;i++){ scene.addThing(new tree({ wh:new WH(500,800), isstatic:true, xyz:new XYZ(Math.round(Math.random()*document.body.clientWidth*20),Math.round(document.body.clientHeight),Math.round(Math.random()*4000+3000)) })); } for(var i= 0,x,z ; i < 80 ;i++){ scene.addThing(new tree({ wh:new WH(500,800), isstatic:true, xyz:new XYZ(Math.round(Math.random()*-document.body.clientWidth*20),Math.round(document.body.clientHeight),Math.round(Math.random()*4000+3000)) })); } for(var i= 0,x,z ; i < 80 ;i++){ scene.addThing(new tree({ wh:new WH(500,800), isstatic:true, xyz:new XYZ(Math.round(Math.random()*-document.body.clientWidth*10),Math.round(document.body.clientHeight),Math.round(Math.random()*4000+1000)) })); } }(window); </script>]<script> void function(window){ var document = window.document; var debug = document.getElementById('debug'); function ObjtoStr(obj){ var arr = []; for(var i in obj){ if(isNaN(obj[i])) continue; arr.push(i + ':' + obj[i]); } return arr.join('; '); } function getElementOffset(element){ var left = 0, top = 0; do{ left += element.offsetLeft; top += element.offsetTop; }while(element = element.offsetParent); return { left:left, top:top }; } function getMouseOffset(event){ return { x:(event.pageX || event.clientX + document.body.scrollLeft - document.body.clientLeft), y:(event.pageY || event.clientY + document.body.scrollTop - document.body.clientTop) }; } function addEventListener(element,type,fun){ if(element.addEventListener){ element.addEventListener(type,function(event){ fun(event); },false); }else{ element.attachEvent('on'+type,function(){ fun(window.event); }); } } function extend(subClass,supClass){ var fun = function(){}, prototype = subClass.prototype; fun.prototype = supClass.prototype; subClass.prototype = new fun(); for(var i in prototype){ subClass.prototype[i] = prototype[i]; } subClass.$supClass = supClass; subClass.prototype.$supClass = function(){ var supClass = arguments.callee.caller.$supClass; if(typeof supClass == 'function'){ supClass.apply(this,arguments); this.$supClass = supClass; } }; subClass.prototype.constructor = subClass; return subClass; } /** * WH类，高宽 */ function WH(w,h){ this.w = w; this.h = h; } WH.prototype = { clone:function(){ return new WH(this.w,this.h); } }; /** * xyz坐标类 * */ function XYZ(x,y,z){ this.x = x; this.y = y; this.z = z; } XYZ.prototype = { clone:function(){ return new XYZ(this.x,this.y,this.z); } }; /** * 场景类 */ function Scene(options){ //属性 //dom this.element = null; //场景距离 this.fl = 500; this.wh = null; //基准z轴 this.baseZ = 0; //中心消失点坐标 this.cX = 0; this.cY = 0; //中心消失点便宜 this.cXl = 0; this.cYl = 0; //偏移系数 this.ce = 9; this.ThingList = []; this.setOption(options); this.init(); } Scene.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'element': this[i] = typeof options[i] == 'string' ? document.getElementById(options[i]) : options[i]; break; } } }, init:function(){ if(!this.element) throw new Error(90,'not box'); this.wh = new WH(this.element.clientWidth,this.element.clientHeight); this.bindEvent(); }, addThing:function(/* Thing */ thing){ this.ThingList.push(thing); this.calcPosition(thing); this.element.appendChild(thing.getElement(this)); }, //计算位置及大小 calcPosition:function(/*Thing*/ thing){ this.cX = this.element.clientWidth/2; this.cY = this.element.clientHeight/2; scale = this.fl/(this.fl + thing.xyz.z+this.baseZ); if(scale <= 0){ thing.element.style.display = 'none'; return ; }else{ thing.element.style.display = ''; } thing.element.style.width = thing.wh.w * scale + 'px'; thing.element.style.height = thing.wh.h * scale + 'px'; thing.element.style.top = (this.cY + ((thing.xyz.y+this.cYl-this.cY) * scale)) + 'px'; thing.element.style.left = (this.cX + ((thing.xyz.x+this.cXl-this.cX) * scale)) + 'px'; thing.element.style.zIndex = Math.round(scale*1000); if(thing.isOpacity){ thing.element.style.opacity = Math.min(scale*4.5,1); thing.element.style.filter = 'alpha(opacity='+(Math.min(scale*4.5,1) * 100)+')'; } }, bindEvent:function(){ var self = this; addEventListener(this.element,'mousemove',function(event){ self.onMouseMove(event); }); var mousewheel = navigator.userAgent.indexOf('Firefox') > 0 ? 'DOMMouseScroll' : 'mousewheel'; addEventListener(this.element,mousewheel,function(event){ self.onMouseWheel(event); }); }, //在场景内移动事件 onMouseMove:function(event){ //场景的页面坐标 var po = getElementOffset(this.element); //鼠标光标的页面坐标 var ev = getMouseOffset(event); //场景内坐标 var x = ev.x-po.left; var y = ev.y-po.top; //中间消失点的坐标偏移差 this.cXl = (this.element.clientWidth/2 - x) * this.ce; this.cYl = (this.element.clientHeight/2 - y) * this.ce; this.reDraw(); }, onMouseWheel:function(event){ var code = event.wheelDelta || -event.detail; if(code > 0){ this.baseZ -= 200; }else{ this.baseZ += 200; } this.reDraw(); }, reDraw:function(){ for(var i=0 ; i<this.ThingList.length;i++){ this.calcPosition(this.ThingList[i]); } } }; /** * 物件抽象类 */ function Thing(options){ this.scene = null; this.wh = new WH(10,10); this.xyz = new XYZ(10,10,0); this.element = null; this.isstats = false; this.isOpacity = true; this.setOption(options); this.init(); } Thing.prototype = { setOption:function(options){ for(var i in options){ switch(i){ case 'wh': case 'xyz': case 'isOpacity': this[i] = options[i]; break; default: break; } } }, init:function(){ this.element = this.draw(); this.element.style.position = 'absolute'; this.element.style.width = this.wh.w + 'px'; this.element.style.height = this.wh.h + 'px'; }, draw:function(){ throw new Error(998,'method do not realize!'); }, getElement:function(/*Scene*/ scene){ this.scene = scene; return this.element; } }; function Diam(options){ this.$supClass(options); } Diam.prototype = { draw:function(){ var img = document.createElement('img'); loadimg = img.cloneNode(true); loadimg.onload = function(){ self.wh = new WH(this.width,this.height); } img.src = [ '/upload/201201/20120105103758227.jpg', '/upload/201201/20120105103801969.jpg', '/upload/201201/20120105103801207.jpg', '/upload/201201/20120105103801956.jpg', '/upload/201201/20120105103801732.jpg', '/upload/201201/20120105103801346.jpg', '/upload/201201/20120105103801362.jpg' ][Math.round(Math.random()*6)]; return img; } }; extend(Diam,Thing); function Sky(options){ this.$supClass(options); } Sky.prototype = { draw:function(){ var img = document.createElement('img'); img.src = [ '/upload/201201/20120105103801314.jpg', '/upload/201201/20120105103803325.jpg', '/upload/201201/20120105103803314.jpg', '/upload/201201/20120105103803146.jpg' ][Math.round(Math.random()*3)]; return img; } }; extend(Sky,Thing); var scene = new Scene({ 'element':'box' }); for(var i= 20,x,z ; i < 40 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+500; y = (Math.cos(Math.PI*2*(i/50)) * 1000)+500; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,3000) })); } for(var i=11,x,z ; i < 31 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+1680; y = (Math.cos(Math.PI*2*(i/50)) * 1000)+500; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,3000) })); } for(var i=9,x,z ; i < 40 ;i++){ x = i*50 -890; y = i*60 + 200; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,3000) })); } for(var i=9,x,z ; i < 40 ;i++){ x = i*-50 +3090; y = i*60 + 200; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,3000) })); } for(var i= 20,x,z ; i < 40 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+500; y = (Math.cos(Math.PI*2*(i/50)) * 1000)+500; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,5000) })); } for(var i=11,x,z ; i < 31 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+1680; y = (Math.cos(Math.PI*2*(i/50)) * 1000)+500; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,5000) })); } for(var i=9,x,z ; i < 40 ;i++){ x = i*50 -890; y = i*60 + 200; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,5000) })); } for(var i=9,x,z ; i < 40 ;i++){ x = i*-50 +3090; y = i*60 + 200; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,y,5000) })); } scene.addThing(new Sky({ wh:new WH(160000,120000), xyz:new XYZ(-80000,-60000,54000), isOpacity:false })); /* for(var i= 0,x,z ; i < 50 ;i++){ x = (Math.sin(Math.PI*2*(i/50)) * 1000)+500; z = (Math.cos(Math.PI*2*(i/50)) * 1000)+3000; scene.addThing(new Diam({ wh:new WH(100,100), xyz:new XYZ(x,document.body.clientHeight/2+200,z) })); }*/ }(window); </script>