Cloud Carousel

<div class="carousel1" id="carousel1" >
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
        <a href="#"><img class="cloudcarousel" src="data:images/p1.png" /></a>
    </div>  
   
</div>
<script type="text/javascript">
    $(document).ready(function () {
        $("#carousel1").CloudCarousel(
        {
            reflHeight:,
            reflOpacity: 0.5,
            reflGap: ,
            yRadius:,
            xPos: ,
            yPos: ,
            autoRotate: 'right',
            speed:0.2

        }
        );
    });

</script>

效果：

reflHeight:0, //倒影的高度，单位是像素

reflOpacity:0.5, //倒影透明度（0-1）
reflGap:0, //图片与倒影之间的间隙，单位是像素
minScale:0.5, //缩放比例
xPos:0, //X轴偏移，一般设置成外框的一半，也就是实例中“#carousel1”的宽度的一半
yPos:0, //Y轴偏移，这个可以自己调试看看，很直观的
xRadius:0, //旋转幅度的水平半径，这个是猜的
yRadius:0, //旋转幅度的垂直半径，这个是猜的，因为旋转的路径是个椭圆，你明白的
altBox:null, //显示图片alt属性的样式名称
titleBox:null, //显示图片title属性的样式名称
FPS: 30, //我猜是旋转运动的步长
autoRotate: ‘no’, //是否自动播放，设置“left”或者“right”即可自动播放
autoRotateDelay: 1500, //播放延时
speed:0.2, //播放速度（0.1 ~ 0.3之间）
mouseWheel: false, //是否支持滑轮，需要加在jQuery滑轮插件，官方的地址不见了，可以用百度“jquery.mousewheel”即可
bringToFront: false, //这个参数设置为true，就是表示点击相应的图片，滚动到当前展示，一般是不打开自动播放时
buttonLeft: ”, //控制向左的按钮
buttonRight: ” //控制向右的按钮

官网地址：  http://www.professorcloud.com/mainsite/carousel.htm

 

cloud-carousel.1.0.5.js源码：

//////////////////////////////////////////////////////////////////////////////////
// CloudCarousel V1.0.5
// (c) 2011 by R Cecco. <http://www.professorcloud.com>
// MIT License
//
// Reflection code based on plugin by Christophe Beyls <http://www.digitalia.be>
//
// Please retain this copyright header in all versions of the software
//////////////////////////////////////////////////////////////////////////////////

(function ($) {

    // START Reflection object.
    // Creates a reflection for underneath an image.
    // IE uses an image with IE specific filter properties, other browsers use the Canvas tag.
    // The position and size of the reflection gets updated by updateAll() in Controller.
    function Reflection(img, reflHeight, opacity) {

        var reflection, cntx, imageWidth = img.width, imageHeight = img.width, gradient, parent;

        parent = $(img.parentNode);
        this.element = reflection = parent.append("<canvas class='reflection' style='position:absolute'/>").find(':last')[];
        if (!reflection.getContext && $.browser.msie) {
            this.element = reflection = parent.append("<img class='reflection' style='position:absolute'/>").find(':last')[];
            reflection.src = img.src;
            reflection.style.filter = "flipv progid:DXImageTransform.Microsoft.Alpha(opacity=" + (opacity * ) + ", style=1, finishOpacity=0, startx=0, starty=0, finishx=0, finishy=" + (reflHeight / imageHeight * ) + ")";

        } else {
            cntx = reflection.getContext("2d");
            try {

                $(reflection).attr({ width: imageWidth, height: reflHeight });
                cntx.save();
                cntx.translate(, imageHeight - );
                cntx.scale(, -);
                cntx.drawImage(img, , , imageWidth, imageHeight);
                cntx.restore();
                cntx.globalCompositeOperation = "destination-out";
                gradient = cntx.createLinearGradient(, , , reflHeight);
                gradient.addColorStop(, "rgba(255, 255, 255, " + ( - opacity) + ")");
                gradient.addColorStop(, "rgba(255, 255, 255, 1.0)");
                cntx.fillStyle = gradient;
                cntx.fillRect(, , imageWidth, reflHeight);
            } catch (e) {
                return;
            }
        }
        // Store a copy of the alt and title attrs into the reflection
        $(reflection).attr({ 'alt': $(img).attr('alt'), title: $(img).attr('title') });

    }    //END Reflection object

    // START Item object.
    // A wrapper object for items within the carousel.
    var Item = function (imgIn, options) {
        this.orgWidth = imgIn.width;
        this.orgHeight = imgIn.height;
        this.image = imgIn;
        this.reflection = null;
        this.alt = imgIn.alt;
        this.title = imgIn.title;
        this.imageOK = false;
        this.options = options;

        this.imageOK = true;

        if (this.options.reflHeight > ) {
            this.reflection = new Reflection(this.image, this.options.reflHeight, this.options.reflOpacity);
        }
        $(this.image).css('position', 'absolute');    // Bizarre. This seems to reset image width to 0 on webkit!
    };// END Item object

    // Controller object.
    // This handles moving all the items, dealing with mouse clicks etc.
    var Controller = function (container, images, options) {
        var items = [], funcSin = Math.sin, funcCos = Math.cos, ctx = this;
        this.controlTimer = ;
        this.stopped = false;
        //this.imagesLoaded = 0;
        this.container = container;
        this.xRadius = options.xRadius;
        this.yRadius = options.yRadius;
        this.showFrontTextTimer = ;
        this.autoRotateTimer = ;
        if (options.xRadius === ) {
            this.xRadius = ($(container).width() / 2.3);
        }
        if (options.yRadius === ) {
            this.yRadius = ($(container).height() / );
        }

        this.xCentre = options.xPos;
        this.yCentre = options.yPos;
        this.frontIndex = ;    // Index of the item at the front

        // Start with the first item at the front.
        this.rotation = this.destRotation = Math.PI / ;
        this.timeDelay =  / options.FPS;

        // Turn on the infoBox
        if (options.altBox !== null) {
            $(options.altBox).css('display', 'block');
            $(options.titleBox).css('display', 'block');
        }
        // Turn on relative position for container to allow absolutely positioned elements
        // within it to work.
        $(container).css({ position: 'relative', overflow: 'hidden' });

        $(options.buttonLeft).css('display', 'inline');
        $(options.buttonRight).css('display', 'inline');

        // Setup the buttons.
        $(options.buttonLeft).bind('mouseup', this, function (event) {
            event.data.rotate(-);
            return false;
        });
        $(options.buttonRight).bind('mouseup', this, function (event) {
            event.data.rotate();
            return false;
        });

        // You will need this plugin for the mousewheel to work: http://plugins.jquery.com/project/mousewheel
        if (options.mouseWheel) {
            $(container).bind('mousewheel', this, function (event, delta) {
                event.data.rotate(delta);
                return false;
            });
        }
        $(container).bind('mouseover click', this, function (event) {

            clearInterval(event.data.autoRotateTimer);        // Stop auto rotation if mouse over.
            var text = $(event.target).attr('alt');
            // If we have moved over a carousel item, then show the alt and title text.

            if (text !== undefined && text !== null) {

                clearTimeout(event.data.showFrontTextTimer);
                $(options.altBox).html(($(event.target).attr('alt')));
                $(options.titleBox).html(($(event.target).attr('title')));
                if (options.bringToFront && event.type == 'click') {

                    var idx = $(event.target).data('itemIndex');
                    var frontIndex = event.data.frontIndex;
                    //var    diff = idx - frontIndex;
                    var diff = (idx - frontIndex) % images.length;
                    if (Math.abs(diff) > images.length / ) {
                        diff += (diff >  ? -images.length : images.length);
                    }

                    event.data.rotate(-diff);
                }
            }
        });
        // If we have moved out of a carousel item (or the container itself),
        // restore the text of the front item in 1 second.
        $(container).bind('mouseout', this, function (event) {
            var context = event.data;
            clearTimeout(context.showFrontTextTimer);
            context.showFrontTextTimer = setTimeout(function () { context.showFrontText(); }, );
            context.autoRotate();    // Start auto rotation.
        });

        // Prevent items from being selected as mouse is moved and clicked in the container.
        $(container).bind('mousedown', this, function (event) {

            event.data.container.focus();
            return false;
        });
        container.onselectstart = function () { return false; };        // For IE.

        this.innerWrapper = $(container).wrapInner('<div style="position:absolute;width:100%;height:100%;"/>').children()[];

        // Shows the text from the front most item.
        this.showFrontText = function () {
            if (items[this.frontIndex] === undefined) { return; }    // Images might not have loaded yet.
            $(options.titleBox).html($(items[this.frontIndex].image).attr('title'));
            $(options.altBox).html($(items[this.frontIndex].image).attr('alt'));
        };

        this.go = function () {
            if (this.controlTimer !== ) { return; }
            var context = this;
            this.controlTimer = setTimeout(function () { context.updateAll(); }, this.timeDelay);
        };

        this.stop = function () {
            clearTimeout(this.controlTimer);
            this.controlTimer = ;
        };

        // Starts the rotation of the carousel. Direction is the number (+-) of carousel items to rotate by.
        this.rotate = function (direction) {
            this.frontIndex -= direction;
            this.frontIndex %= items.length;
            this.destRotation += (Math.PI / items.length) * ( * direction);
            this.showFrontText();
            this.go();
        };

        this.autoRotate = function () {
            if (options.autoRotate !== 'no') {
                var dir = (options.autoRotate === 'right') ?  : -;
                this.autoRotateTimer = setInterval(function () { ctx.rotate(dir); }, options.autoRotateDelay);
            }
        };

        // This is the main loop function that moves everything.
        this.updateAll = function () {
            var minScale = options.minScale;    // This is the smallest scale applied to the furthest item.
            var smallRange = ( - minScale) * 0.5;
            var w, h, x, y, scale, item, sinVal;

            var change = (this.destRotation - this.rotation);
            var absChange = Math.abs(change);

            this.rotation += change * options.speed;
            if (absChange < 0.001) { this.rotation = this.destRotation; }
            var itemsLen = items.length;
            var spacing = (Math.PI / itemsLen) * ;
            //var    wrapStyle = null;
            var radians = this.rotation;
            var isMSIE = $.browser.msie;

            // Turn off display. This can reduce repaints/reflows when making style and position changes in the loop.
            // See http://dev.opera.com/articles/view/efficient-javascript/?page=3
            this.innerWrapper.style.display = 'none';

            var style;
            var px = 'px', reflHeight;
            var context = this;
            for (var i = ; i < itemsLen ; i++) {
                item = items[i];

                sinVal = funcSin(radians);

                scale = ((sinVal + ) * smallRange) + minScale;

                x = this.xCentre + (((funcCos(radians) * this.xRadius) - (item.orgWidth * 0.5)) * scale);
                y = this.yCentre + (((sinVal * this.yRadius)) * scale);

                if (item.imageOK) {
                    var img = item.image;
                    w = img.width = item.orgWidth * scale;
                    h = img.height = item.orgHeight * scale;
                    img.style.left = x + px;
                    img.style.top = y + px;
                    img.style.zIndex = "" + (scale * ) >> ;    // >>0 = Math.foor(). Firefox doesn't like fractional decimals in z-index.
                    if (item.reflection !== null) {
                        reflHeight = options.reflHeight * scale;
                        style = item.reflection.element.style;
                        style.left = x + px;
                        style.top = y + h + options.reflGap * scale + px;
                        style.width = w + px;
                        if (isMSIE) {
                            style.filter.finishy = (reflHeight / h * );
                        } else {
                            style.height = reflHeight + px;
                        }
                    }
                }
                radians += spacing;
            }
            // Turn display back on.
            this.innerWrapper.style.display = 'block';

            // If we have a preceptable change in rotation then loop again next frame.
            if (absChange >= 0.001) {
                this.controlTimer = setTimeout(function () { context.updateAll(); }, this.timeDelay);
            } else {
                // Otherwise just stop completely.
                this.stop();
            }
        }; // END updateAll        

        // Create an Item object for each image
        //        func = function(){return;ctx.updateAll();} ;

        // Check if images have loaded. We need valid widths and heights for the reflections.
        this.checkImagesLoaded = function () {
            var i;
            for (i = ; i < images.length; i++) {
                if ((images[i].width === undefined) || ((images[i].complete !== undefined) && (!images[i].complete))) {
                    return;
                }
            }
            for (i = ; i < images.length; i++) {
                items.push(new Item(images[i], options));
                $(images[i]).data('itemIndex', i);
            }
            // If all images have valid widths and heights, we can stop checking.
            clearInterval(this.tt);
            this.showFrontText();
            this.autoRotate();
            this.updateAll();

        };

        this.tt = setInterval(function () { ctx.checkImagesLoaded(); }, );
    }; // END Controller object

    // The jQuery plugin part. Iterates through items specified in selector and inits a Controller class for each one.
    $.fn.CloudCarousel = function (options) {

        this.each(function () {

            options = $.extend({}, {
                reflHeight: ,
                reflOpacity: 0.5,
                reflGap: ,
                minScale: 0.5,
                xPos: ,
                yPos: ,
                xRadius: ,
                yRadius: ,
                altBox: null,
                titleBox: null,
                FPS: ,
                autoRotate: 'no',
                autoRotateDelay: ,
                speed: 0.2,
                mouseWheel: false,
                bringToFront: false
            }, options);
            // Create a Controller for each carousel.
            $(this).data('cloudcarousel', new Controller(this, $('.cloudcarousel', $(this)), options));
        });
        return this;
    };

})(jQuery);