/**
 * jQuery Roundabout - v1.1
 * http://fredhq.com/projects/roundabout/
 *
 * Moves list-items of enabled ordered and unordered lists long
 * a chosen path. Includes the default "lazySusan" path, that
 * moves items long a spinning turntable.
 *
 * Terms of Use // jQuery Roundabout
 * 
 * Open source under the BSD license
 *
 * Copyright (c) 2010, Fred LeBlanc
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials provided 
 *     with the distribution.
 *   - Neither the name of the author nor the names of its contributors 
 *     may be used to endorse or promote products derived from this 
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */

jQuery.extend({roundabout_shape:{def:'lazySusan',lazySusan:function(r,a,t){return{x:Math.sin(r+a),y:(Math.sin(r+3*Math.PI/2+a)/8)*t,z:(Math.cos(r+a)+1)/2,scale:(Math.sin(r+Math.PI/2+a)/2)+0.5}}}});jQuery.fn.roundabout=function(){var options=(typeof arguments[0]!='object')?{}:arguments[0];options={bearing:(typeof options.bearing=='undefined')?0.0:jQuery.roundabout_toFloat(options.bearing%360.0),tilt:(typeof options.tilt=='undefined')?0.0:jQuery.roundabout_toFloat(options.tilt),minZ:(typeof options.minZ=='undefined')?100:parseInt(options.minZ,10),maxZ:(typeof options.maxZ=='undefined')?400:parseInt(options.maxZ,10),minOpacity:(typeof options.minOpacity=='undefined')?0.40:jQuery.roundabout_toFloat(options.minOpacity),maxOpacity:(typeof options.maxOpacity=='undefined')?1.00:jQuery.roundabout_toFloat(options.maxOpacity),minScale:(typeof options.minScale=='undefined')?0.40:jQuery.roundabout_toFloat(options.minScale),maxScale:(typeof options.maxScale=='undefined')?1.00:jQuery.roundabout_toFloat(options.maxScale),duration:(typeof options.duration=='undefined')?600:parseInt(options.duration,10),btnNext:options.btnNext||null,btnPrev:options.btnPrev||null,easing:options.easing||'swing',clickToFocus:(options.clickToFocus!==false),focusBearing:(typeof options.focusBearing=='undefined')?0.0:jQuery.roundabout_toFloat(options.focusBearing%360.0),shape:options.shape||'lazySusan',debug:options.debug||false,childSelector:options.childSelector||'li',startingChild:(typeof options.startingChild=='undefined')?null:parseInt(options.startingChild,10),reflect:(typeof options.reflect=='undefined'||options.reflect===false)?false:true};this.each(function(i){var ref=jQuery(this);var period=jQuery.roundabout_toFloat(360.0/ref.children(options.childSelector).length);var startingBearing=(options.startingChild===null)?options.bearing:options.startingChild*period;ref.addClass('roundabout-holder').css('padding',0).css('margin','auto').css('position','relative').css('z-index',options.minZ);ref.data('roundabout',{'bearing':startingBearing,'tilt':options.tilt,'minZ':options.minZ,'maxZ':options.maxZ,'minOpacity':options.minOpacity,'maxOpacity':options.maxOpacity,'minScale':options.minScale,'maxScale':options.maxScale,'duration':options.duration,'easing':options.easing,'clickToFocus':options.clickToFocus,'focusBearing':options.focusBearing,'animating':0,'childInFocus':-1,'shape':options.shape,'period':period,'debug':options.debug,'childSelector':options.childSelector,'reflect':options.reflect});if(options.clickToFocus===true){ref.children(options.childSelector).each(function(i){jQuery(this).click(function(e){var degrees=(options.reflect===true)?360.0-(period*i):period*i;degrees=jQuery.roundabout_toFloat(degrees);if(!jQuery.roundabout_isInFocus(ref,degrees)){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateAngleToFocus(degrees)}return false}})})}if(options.btnNext){jQuery(options.btnNext).bind('click.roundabout',function(e){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateToNextChild()}return false})}if(options.btnPrev){jQuery(options.btnPrev).bind('click.roundabout',function(e){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateToPreviousChild()}return false})}});this.roundabout_startChildren();if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_startChildren=function(){this.each(function(i){var ref=jQuery(this);var data=ref.data('roundabout');var children=ref.children(data.childSelector);children.each(function(i){var degrees=(data.reflect===true)?360.0-(data.period*i):data.period*i;jQuery(this).addClass('roundabout-moveable-item').css('position','absolute');jQuery(this).data('roundabout',{'startWidth':jQuery(this).width(),'startHeight':jQuery(this).height(),'startFontSize':parseInt(jQuery(this).css('font-size'),10),'degrees':degrees})});ref.roundabout_updateChildPositions()});return this};jQuery.fn.roundabout_setTilt=function(newTilt){this.each(function(i){jQuery(this).data('roundabout').tilt=newTilt;jQuery(this).roundabout_updateChildPositions()});if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_setBearing=function(newBearing){this.each(function(i){jQuery(this).data('roundabout').bearing=jQuery.roundabout_toFloat(newBearing%360,2);jQuery(this).roundabout_updateChildPositions()});if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_adjustBearing=function(delta){delta=jQuery.roundabout_toFloat(delta);if(delta!==0){this.each(function(i){jQuery(this).data('roundabout').bearing=jQuery.roundabout_getBearing(jQuery(this))+delta;jQuery(this).roundabout_updateChildPositions()})}if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_adjustTilt=function(delta){delta=jQuery.roundabout_toFloat(delta);if(delta!==0){this.each(function(i){jQuery(this).data('roundabout').tilt=jQuery.roundabout_toFloat(jQuery(this).roundabout_get('tilt')+delta);jQuery(this).roundabout_updateChildPositions()})}if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_animateToBearing=function(bearing){bearing=jQuery.roundabout_toFloat(bearing);var currentTime=new Date();var duration=(typeof arguments[1]=='undefined')?null:arguments[1];var easingType=(typeof arguments[2]=='undefined')?null:arguments[2];var passedData=(typeof arguments[3]!=='object')?null:arguments[3];this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout'),timer,easingFn,newBearing;var thisDuration=(duration===null)?data.duration:duration;var thisEasingType=(easingType!==null)?easingType:data.easing||'swing';if(passedData===null){passedData={timerStart:currentTime,start:jQuery.roundabout_getBearing(ref),totalTime:thisDuration}}timer=currentTime-passedData.timerStart;if(timer<thisDuration){data.animating=1;if(typeof jQuery.easing.def=='string'){easingFn=jQuery.easing[thisEasingType]||jQuery.easing[jQuery.easing.def];newBearing=easingFn(null,timer,passedData.start,bearing-passedData.start,passedData.totalTime)}else{newBearing=jQuery.easing[thisEasingType]((timer/passedData.totalTime),timer,passedData.start,bearing-passedData.start,passedData.totalTime)}ref.roundabout_setBearing(newBearing,function(){ref.roundabout_animateToBearing(bearing,thisDuration,thisEasingType,passedData)})}else{bearing=(bearing<0)?bearing+360:bearing%360;data.animating=0;ref.roundabout_setBearing(bearing)}});return this};jQuery.fn.roundabout_animateToDelta=function(delta){var duration=arguments[1],easing=arguments[2];this.each(function(i){delta=jQuery.roundabout_getBearing(jQuery(this))+jQuery.roundabout_toFloat(delta);jQuery(this).roundabout_animateToBearing(delta,duration,easing)});return this};jQuery.fn.roundabout_animateToChild=function(childPos){var duration=arguments[1],easing=arguments[2];this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout');if(data.childInFocus!==childPos&&data.animating===0){var child=jQuery(ref.children(data.childSelector)[childPos]);ref.roundabout_animateAngleToFocus(child.data('roundabout').degrees,duration,easing)}});return this};jQuery.fn.roundabout_animateToNearbyChild=function(passedArgs,which){var duration=passedArgs[0],easing=passedArgs[1];this.each(function(i){var data=jQuery(this).data('roundabout');var bearing=jQuery.roundabout_toFloat(360.0-jQuery.roundabout_getBearing(jQuery(this)));var period=data.period,j=0,range;var reflect=data.reflect;var length=jQuery(this).children(data.childSelector).length;bearing=(reflect===true)?bearing%360.0:bearing;if(data.animating===0){if((reflect===false&&which==='next')||(reflect===true&&which!=='next')){bearing=(bearing===0)?360:bearing;while(true&&j<length){range={lower:jQuery.roundabout_toFloat(period*j),upper:jQuery.roundabout_toFloat(period*(j+1))};range.upper=(j==length-1)?360.0:range.upper;if(bearing<=range.upper&&bearing>range.lower){jQuery(this).roundabout_animateToDelta(bearing-range.lower,duration,easing);break}j++}}else{while(true){range={lower:jQuery.roundabout_toFloat(period*j),upper:jQuery.roundabout_toFloat(period*(j+1))};range.upper=(j==length-1)?360.0:range.upper;if(bearing>=range.lower&&bearing<range.upper){jQuery(this).roundabout_animateToDelta(bearing-range.upper,duration,easing);break}j++}}}});return this};jQuery.fn.roundabout_animateToNextChild=function(){return this.roundabout_animateToNearbyChild(arguments,'next')};jQuery.fn.roundabout_animateToPreviousChild=function(){return this.roundabout_animateToNearbyChild(arguments,'previous')};jQuery.fn.roundabout_animateAngleToFocus=function(target){var duration=arguments[1],easing=arguments[2];this.each(function(i){var delta=jQuery.roundabout_getBearing(jQuery(this))-target;delta=(Math.abs(360.0-delta)<Math.abs(0.0-delta))?360.0-delta:0.0-delta;delta=(delta>180)?-(360.0-delta):delta;if(delta!==0){jQuery(this).roundabout_animateToDelta(delta,duration,easing)}});return this};jQuery.fn.roundabout_updateChildPositions=function(){this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout');var inFocus=-1;var info={bearing:jQuery.roundabout_getBearing(ref),tilt:data.tilt,stage:{width:Math.floor(ref.width()*0.9),height:Math.floor(ref.height()*0.9)},animating:data.animating,inFocus:data.childInFocus,focusBearingRad:jQuery.roundabout_degToRad(data.focusBearing),shape:jQuery.roundabout_shape[data.shape]||jQuery.roundabout_shape[jQuery.roundabout_shape.def]};info.midStage={width:info.stage.width/2,height:info.stage.height/2};info.nudge={width:info.midStage.width+info.stage.width*0.05,height:info.midStage.height+info.stage.height*0.05};info.zValues={min:data.minZ,max:data.maxZ,diff:data.maxZ-data.minZ};info.opacity={min:data.minOpacity,max:data.maxOpacity,diff:data.maxOpacity-data.minOpacity};info.scale={min:data.minScale,max:data.maxScale,diff:data.maxScale-data.minScale};ref.children(data.childSelector).each(function(i){if(jQuery.roundabout_updateChildPosition(jQuery(this),ref,info,i)&&info.animating===0){inFocus=i;jQuery(this).addClass('roundabout-in-focus')}else{jQuery(this).removeClass('roundabout-in-focus')}});if(inFocus!==info.inFocus){jQuery.roundabout_triggerEvent(ref,info.inFocus,'blur');if(inFocus!==-1){jQuery.roundabout_triggerEvent(ref,inFocus,'focus')}data.childInFocus=inFocus}});return this};jQuery.roundabout_getBearing=function(el){return jQuery.roundabout_toFloat(el.data('roundabout').bearing)%360};jQuery.roundabout_degToRad=function(degrees){return(degrees%360.0)*Math.PI/180.0};jQuery.roundabout_isInFocus=function(el,target){return(jQuery.roundabout_getBearing(el)%360===(target%360))};jQuery.roundabout_triggerEvent=function(el,child,eventType){return(child<0)?this:jQuery(el.children(el.data('roundabout').childSelector)[child]).trigger(eventType)};jQuery.roundabout_toFloat=function(number){number=Math.round(parseFloat(number)*1000)/1000;return parseFloat(number.toFixed(2))};jQuery.roundabout_updateChildPosition=function(child,container,info,childPos){var ref=jQuery(child),data=ref.data('roundabout'),out=[];var rad=jQuery.roundabout_degToRad((360.0-ref.data('roundabout').degrees)+info.bearing);while(rad<0){rad=rad+Math.PI*2}while(rad>Math.PI*2){rad=rad-Math.PI*2}var factors=info.shape(rad,info.focusBearingRad,info.tilt);factors.scale=(factors.scale>1)?1:factors.scale;factors.adjustedScale=(info.scale.min+(info.scale.diff*factors.scale)).toFixed(4);factors.width=(factors.adjustedScale*data.startWidth).toFixed(4);factors.height=(factors.adjustedScale*data.startHeight).toFixed(4);ref.css('left',((factors.x*info.midStage.width+info.nudge.width)-factors.width/2.0).toFixed(1)+'px').css('top',((factors.y*info.midStage.height+info.nudge.height)-factors.height/2.0).toFixed(1)+'px').css('width',factors.width+'px').css('height',factors.height+'px').css('opacity',(info.opacity.min+(info.opacity.diff*factors.scale)).toFixed(2)).css('z-index',Math.round(info.zValues.min+(info.zValues.diff*factors.z))).css('font-size',(factors.adjustedScale*data.startFontSize).toFixed(2)+'px').attr('current-scale',factors.adjustedScale);if(container.data('roundabout').debug===true){out.push('<div style="font-weight: normal; font-size: 10px; padding: 2px; width: '+ref.css('width')+'; background-color: #ffc;">');out.push('<strong style="font-size: 12px; white-space: nowrap;">Child '+childPos+'</strong><br />');out.push('<strong>left:</strong> '+ref.css('left')+'<br /><strong>top:</strong> '+ref.css('top')+'<br />');out.push('<strong>width:</strong> '+ref.css('width')+'<br /><strong>opacity:</strong> '+ref.css('opacity')+'<br />');out.push('<strong>z-index:</strong> '+ref.css('z-index')+'<br /><strong>font-size:</strong> '+ref.css('font-size')+'<br />');out.push('<strong>scale:</strong> '+ref.attr('current-scale'));out.push('</div>');ref.html(out.join(''))}return jQuery.roundabout_isInFocus(container,ref.data('roundabout').degrees)};