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JavaScript实现360度全景图片展示效果_大前端
2015-08-02 13:23:09   来源:   评论:0 点击:

360全景照片展示由于它的真实性、全视角等特点能够很好的展现产品。而我在工作之余写了一个360度图片展示效果,改变了普通图片平淡的特点,

360全景照片展示由于它的真实性、全视角等特点能够很好的展现产品。而我在工作之余写了一个360度图片展示效果,改变了普通图片平淡的特点,让人们在网上能够进行 360 度全视角观察,而且通过交互操作,可以实现自由浏览,从而震撼的视觉效果。

全景照片:所谓“全景拍摄”就是将所有拍摄的多张图片拼成一张全景图片。它的基本拍摄原理是搜索两张图片的边缘部分,并将成像效果最为接近的区域加以重合,以完成图片的自动拼接。现在的智能手机也基本带这个功能。

点此查看实例展示

这个小DEMO基于全景照片的左右边缘较为接近且适宜自动拼接与jser熟知的无缝滚动原理。下面这个图片就是本DEMO实现原理的简化图。

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HTML结构:

  <div class="pop_see_360pic" id="popseebox">		<div class="pic_box">			<div class="loading" id="pic360load">Loading...</div>			<div class="pic_box_inner" id="pic_box_inner">				<img src="" />			</div>			<a href="void(0)" class="prev_arrow" id="prev"><span>←</span></a>			<a href="void(0)" class="pause_arrow" id="pause"><span>‖</span></a>			<a href="void(0)" class="next_arrow" id="next"><span>→</span></a>		</div>		<div class="pic_list">			<ul id="picListItem">				<li><a href="void(0)" class="sel">Standard Room</a></li>				<li><a href="void(0)">Sea view Room (PVSU1)</a></li>				<li><a href="void(0)">Royale Suite</a></li>				<li><a href="void(0)">Bella Suite</a></li>				<li><a href="void(0)">11Royale Suite (PVSU1)</a></li>				<li><a href="void(0)">Royale Suite</a></li>				<li><a href="void(0)">Bella Suite</a></li>				<li><a href="void(0)">Royale Suite (PVSU1)</a></li>			</ul>		</div>		<a href="void(0)" class="mbtn mbtn-mini" id="close">X</a>	</div>

CSS样式:

*{margin:0; padding:0;}li{list-style: none; }body{font-size:11px;}a{text-decoration: none;}.pop_see_360pic:after {clear:both;display:block;content:".";height:0;visibility:hidden;font-size:0;line-height:0;}.pop_see_360pic {position:relative;float:left;width:550px;padding:14px 70px 14px 71px;border:1px solid #CECECE;background-color:#FFFFFF;zoom:1;}.pop_see_360pic_fla {width:650px;padding:20px 40px 14px 0;}.pop_see_360pic .mbtn {position:absolute;top:12px;right:20px;}.pop_see_360pic .pic_box {position:relative;float:left;width:320px;height:240px;overflow:hidden;margin-right:10px;}.pop_see_360pic .pic_box img {display:block;width:320px;height:240px;}.pop_see_360pic .pic_list {float:left;width:220px;height:240px;overflow-x:hidden;overflow-y:auto;}.pop_see_360pic .pic_list ul {overflow:hidden;width:218px;border:1px solid #CECECE;border-bottom:0 none;}.pop_see_360pic .pic_list li {float:left;width:218px;height:35px;font-weight:bold;border-bottom:1px solid #CECECE;}.pop_see_360pic .pic_list li a {display:block;width:100%;height:18px;overflow:hidden;padding:9px 10px 8px 10px;zoom:1;}.pop_see_360pic .pic_list li a:hover {text-decoration:none;background-color:#EFF0F1;}.pop_see_360pic .pic_list li a.sel,.pop_see_360pic .pic_list li a.sel:hover {text-decoration:none;background-color:#C1D3F1;}.pop_see_360pic .prev_arrow,.pop_see_360pic .pause_arrow,.pop_see_360pic .next_arrow {position:absolute;left:124px;bottom:0;width:70px;height:27px;overflow:hidden;padding-top:17px;text-align:center;font-size:12px;filter:progid:DXImageTransform.Microsoft.gradient(enabled='true',startColorstr='#7FFFFFFF', endColorstr='#7FFFFFFF');background:url(about:blank);background:rgba(255,255,255,0.5);z-index:9;}:root .pop_see_360pic .prev_arrow,:root .pop_see_360pic .pause_arrow,:root .pop_see_360pic .next_arrow {filter:none;}.pop_see_360pic .prev_arrow {left:53px;border-radius:10px 0 0 0;}.pop_see_360pic .next_arrow {left:195px;border-radius:0 10px 0 0;}.pop_see_360pic .prev_arrow:hover,.pop_see_360pic .pause_arrow:hover,.pop_see_360pic .next_arrow:hover {font-size:11px;}.pop_see_360pic .pic_box img {width: auto;height: 240px;}.pop_see_360pic{margin:10px;}.pop_see_360pic .loading{position: absolute; top:0; left:0; background:#ebebeb url(http://www.daqianduan.com/wp-content/uploads/2012/12/loading_50_g.gif) no-repeat 134px 78px; width: 320px; height:240px; z-index:998; text-indent: -999px;}.pic_box_inner{position:absolute; width:5000px; overflow: hidden; *zoom:1;}.pic_box_inner img{float:left;}

javascript:

window.onload = function(){var pic360play = function(){this.initialize()}pic360play.prototype = {	initialize : function(){		var oThis = this;		this.popseebox = document.getElementById("popseebox");		this.pic360load = document.getElementById("pic360load");		this.oPrev = document.getElementById("prev");		this.opause = document.getElementById("pause");		this.oNext = document.getElementById("next");		this.timeout = 0;		this.picList = document.getElementById("picListItem");		this.oScrollIner = document.getElementById("pic_box_inner");		this.oScrollBox = this.oScrollIner.parentNode;		this.oScrollImg = this.oScrollBox.getElementsByTagName("img")[0];		/* ============= copy img for scrool no space =========== */		this.oScrollImgcopy = this.oScrollImg.cloneNode(true);		this.oScrollIner.appendChild(this.oScrollImgcopy);		/* =========== bind close pic360play popup event ========== */		document.getElementById("close").onclick = function(){			oThis.close(popseebox);		}		/* ============== reset first img and layout ===============*/		oThis.resetImg();		/* ============== give per link tabs pic =================*/		oThis.picList.onclick = function(e) {			e = window.event ? window.event : e;			var who = e.target ? e.target : e.srcElement;			if(who.nodeType == 1 && who.tagName == "A" && who.getAttribute("imgurl") && oThis.oScrollImgcopy.src != who.getAttribute("imgurl")){				oThis.pic360load.style.display = "block";				var newimg = new Image();				newimg.src = who.getAttribute("imgurl");				newimg.onload = function(){					oThis.oScrollImg.src = oThis.oScrollImgcopy.src = who.getAttribute("imgurl");						oThis.oScrollImg = oThis.oScrollBox.getElementsByTagName("img")[0];						oThis.oScrollImgcopy = oThis.oScrollBox.getElementsByTagName("img")[1];						oThis.pic360load.style.display = "none";						clearTimeout(oThis.timeout);						oThis.resetMiddle();						oThis.timeout = setInterval(function(){							oThis.prev(oThis);						},16);				}				return false;			}		};			/* ============ play pic ============= */ 		 this.oPrev.onclick = function(){		 	clearTimeout(oThis.timeout);		 	oThis.timeout = setInterval(function(){		 		oThis.prev();		 	},16);		 }		 this.oNext.onclick = function(){		 	clearTimeout(oThis.timeout);		 	oThis.timeout = setInterval(function(){		 		oThis.next();		 	},16);		 }		 this.opause.onclick = function(){		 	clearTimeout(oThis.timeout);		 }	},	getStyle : function(elem,name){		if(elem.style[name]){		return elem.style[name];		}		else if(elem.currentStyle){			return elem.currentStyle[name];		}		else if(document.defaultView && document.defaultView.getComputedStyle){			name = name.replace(/[A-Z]/g,"-$1");			name = name.toLowerCase();			var s = document.defaultView.getComputedStyle(elem,'');			return s && s.getPropertyValue(name);		}		return null;	},	prev : function(){		if(parseFloat(this.oScrollIner.style.left)  parseFloat(this.getStyle(this.oScrollBox,"width")) - this.oScrollImg.width)		 	this.oScrollIner.style.left =  parseFloat(this.oScrollIner.style.left) - this.oScrollImg.width + "px";		 this.oScrollIner.style.left = parseFloat(this.oScrollIner.style.left) + 1 + "px";	},	close : function(obj){		obj.style.display = "none";			return false;	},	resetImg : function(){		var picListItemLink = this.picList.getElementsByTagName("a");		var oThis = this;		oThis.oScrollImg.src = oThis.oScrollImgcopy.src = picListItemLink[1].getAttribute("imgurl");		var resetImg = new Image();		resetImg.src= picListItemLink[1].getAttribute("imgurl");		resetImg.onload = function(){			//reset img location middle			oThis.resetMiddle();			oThis.pic360load.style.display = "none";			oThis.timeout = setInterval(function(){				oThis.prev(oThis);			},16);		}	},	resetMiddle: function(){		this.oScrollIner.style.left = - (this.oScrollImg.width/2 - parseFloat(this.getStyle(this.oScrollBox,"width"))/2) + "px";				}}new pic360play();}

点此查看实例展示

转载请注明出处大前端 » JavaScript实现360度全景图片展示效果

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