图像转变过程中添加水波纹效果[网页特效]

dn001 2009-06-21 08:53:46

<head> <title>连续环绕滚动图片</title> <script type='text/javascript'> function carousel(params){ if(!(params.width>0 && isFinite(params.width)))params.width=100; if(!(params.height>0 && isFinite(params.height)))params.height=100; if(!(params.sides>2 && isFinite(params.sides)))params.sides=4; if(!(params.steps>0 && params.steps<100 && isFinite(params.steps)))params.steps=20; if(!(params.speed>0 && isFinite(params.speed)))params.speed=8; if(!(params.image_border_width>=0 && isFinite(params.image_border_width)))params.image_border_width=0; if(isFinite(params.id)||!params.id)params.id='bad_id_given_'+Math.random(); document.write("<div style='position:relative;overflow:hidden;' id='"+params.id.replace(/[rnt ]+/g,'_')+"'></div>"); var cdiv=document.getElementById(params.id.replace(/[rnt ]+/g,'_')) cdiv.style.width=params.width+'px'; cdiv.style.height=params.height+'px'; cdiv.style.border=params.border; cdiv.style.position='relative'; cdiv.style.overflow='hidden'; cdiv.title=params.id; var counter=0,spinning=true,interval=Math.floor(60000/params.sides/params.steps/params.speed)-5; interval=isNaN(interval)?200:interval; var img_position=[],images=[],img_dimension=[]; var img_index=params.images.length+1,img_index_cap=2*params.images.length; var faces=Math.ceil(params.sides/2), dimension, direction; function init(){ if(params.direction=="left" || params.direction=="right"){ direction=params.direction; dimension="width"; } else if(params.direction=="top" || params.direction=="bottom"){ direction=params.direction; dimension="height"; } else { direction="left"; dimension="width"; } cdiv.style[dimension]=params[dimension]/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)+'px'; var img=new Image(); img.style.position='absolute'; img.style[direction]='10000px'; img.style.width=params.width-2*params.image_border_width+'px'; img.style.height=params.height-2*params.image_border_width+'px'; img.style.border=(params.image_border_width||0)+'px solid '+params.image_border_color; //more javascript from http://www.knowsky.com for(var i=0;i<params.images.length;i++){ images[i]=img.cloneNode(true); images[i].src=params.images[i]; if(params.links && params.links[i] && params.links[i]!=''){ images[i].onclick=new Function("window.location='"+params.links[i]+"'"); images[i].style.cursor=document.all?'hand':'pointer'; } if(params.titles && params.titles[i] && params.titles[i]!='') images[i].title=params.titles[i]; images[i+params.images.length]=images[i]; if(params.images.length==faces) images[i+2*params.images.length]=images[i]; cdiv.appendChild(images[i]); } var face_size=params.size_mode=='image'?params[dimension]:params[dimension]*Math.sin(Math.PI/params.sides); var face_offset=params[dimension]*Math.cos(Math.PI/params.sides)/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)/2-.5; var pi_piece=2*Math.PI/params.steps/params.sides; for(i=0;i<=params.steps*faces;i++){ img_dimension[i]=face_size*Math.sin(pi_piece*i); img_position[i]=(i<params.steps*params.sides/2)?Math.floor(params[dimension]/2/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)-face_offset*Math.cos(pi_piece*i)-img_dimension[i]/2)+'px':'10000px'; img_dimension[i]=img_dimension[i]-2*params.image_border_width>1?Math.ceil(img_dimension[i])-2*params.image_border_width+'px':'1px'; } } init(); cdiv.rotate = function(){ setTimeout('document.getElementById("'+cdiv.id+'").rotate()',interval); if(!spinning) return; if(++counter>=params.steps){ counter=0; if(++img_index>=img_index_cap) img_index=params.images.length; } images[img_index-faces].style[direction]='20000px'; for(var i=faces-1;i>=0;i--){ images[img_index-i].style[direction]=img_position[counter+i*params.steps]; images[img_index-i].style[dimension]=img_dimension[counter+i*params.steps]; } } cdiv.onmouseover=function(){ spinning=false; } cdiv.onmouseout=function(){ spinning=true; } setTimeout('document.getElementById("'+cdiv.id+'").rotate()',200); } </script> </head>  <body> <h3>水平方向滚动</h3> <script type='text/javascript'> carousel({id:'Amazon Books', //Enter arbitrary but unique ID of this slideshow instance border:'', size_mode:'image', //Enter "carousel" or "image". Affects the width and height parameters below. width:107, //Enter width of image or entire carousel, depending on above value height:140, //Enter height of image or entire carousel, depending on above value sides:6, //# of sides of the carousel. What's shown = sides/2. Even integer with sides/2< total images is best steps:23, //# of animation steps. More = smoother, but more CPU intensive speed:5, //Speed of slideshow. Larger = faster. direction:'left', //Direction of slideshow. Enter "top", "bottom", "left", or "right" images:['http://www.knowsky.com/img/200406301.jpg', 'http://www.knowsky.com/img/200406302.jpg', 'http://www.knowsky.com/img/200406303.jpg', 'http://www.knowsky.com/img/200406304.jpg'], links: ['http://www.knowsky.com/', 'http://www.knowsky.com/', 'http://www.knowsky.com/', 'http://www.knowsky.com/'], titles:['javascript特效', '网络学院', '网站联盟', '插件下载'], image_border_width:1, image_border_color:'blue' }); </script> <h3>竖直方向滚动</h3> <script type='text/javascript'> carousel({id:'carousel_1', //Enter arbitrary but unique ID of this slideshow instance border:'', size_mode:'image', //Enter "carousel" or "image". Affects the width and height parameters below. width:107, //Enter width of image or entire carousel, depending on above value height:140, //Enter height of image or entire carousel, depending on above value sides:8, //# of sides of the carousel. What's shown = sides/2. Even integer with sides/2< total images is best steps:8, //# of animation steps. More = smoother, but more CPU intensive speed:7, //Speed of slideshow. Larger = faster. direction:'top', //Direction of slideshow. Enter "top", "bottom", "left", or "right" images:['http://www.knowsky.com/img/200406301.jpg', 'http://www.knowsky.com/img/200406302.jpg', 'http://www.knowsky.com/img/200406303.jpg', 'http://www.knowsky.com/img/200406304.jpg'], links: [], titles:[], image_border_width:1, image_border_color:'black' }); </script> </body>