/* - jquery.waterwheelCarousel.js - */
// http://www.dancechampions.org/portal_javascripts/jquery.waterwheelCarousel.js?original=1
(function($){$.fn.waterwheelCarousel=function(orientation,options){options=$.extend({},$.fn.waterwheelCarousel.defaults,options||{});if(orientation!="horizontal"||orientation!="veritical"){orientation="horizontal"}
return $(this).each(function(){var data={itemsContainer:$(this),totalItems:$(this).children().length,containerWidth:$(this).width(),containerHeight:$(this).height(),items:[],itemDistances:[],waveDistances:[],itemOpacities:[],containerIDTag:"#"+$(this).attr("id"),carouselRotationsLeft:0,currentlyMoving:false,itemsAnimating:0,currentSpeed:options.speed}
beforeLoaded();preload(function(){setupDistanceArrays();setupCarousel();setupStarterRotation()});
function getItem(itemNum){return data.itemsContainer.children().eq(itemNum-1)}
function getPreviousNum(num){var newNum=(num==1)?null:num--;return newNum}
function getNextNum(num){var newNum=(num==data.totalItems)?null:num++;return newNum}
function beforeLoaded(){data.itemsContainer.find("img").hide()}
function preload(callback){var $imageElements=data.itemsContainer.find("img");var loadedImages=0;var totalImages=$imageElements.length;$imageElements.each(function(){$(this).load(function(){loadedImages++;if(loadedImages==totalImages){callback()}});if(this.complete){$(this).trigger('load')}})}
function setupDistanceArrays(){data.itemDistances[0]=options.startingItemSeparation;data.waveDistances[0]=options.startingWaveSeparation;data.itemOpacities[0]=1 *.75;for(var i=1;i<options.flankingItems+1;i++){data.itemDistances[i]=data.itemDistances[i-1] * options.itemSeparationFactor;data.waveDistances[i]=data.waveDistances[i-1] * options.waveSeparationFactor;data.itemOpacities[i]=data.itemOpacities[i-1] * options.opacityDecreaseFactor}
data.itemOpacities[data.itemOpacities.length-1]=0}
function setupCarousel(){data.items=data.itemsContainer.children('img');for(var i=0;i<data.items.length;i++){data.items[i]=$(data.items[i])}
data.itemsContainer.css('position','relative').find('img').each(function(i){var newLeft,newTop;if(orientation=="horizontal"){newLeft=(data.containerWidth/ 2) - ($(this).width() / 2);newTop=options.centerOffset} else{newLeft=options.centerOffset;newTop=(data.containerHeight/ 2) - ($(this).height() / 2)}
$(this).css({left:newLeft,top:newTop,position:'absolute','z-index':options.flankingItems+2,'opacity':1}).data({currentPosition:0,width:$(this).width(),owidth:$(this).width(),height:$(this).height(),oheight:$(this).height(),top:newTop,left:newLeft,opacity:1,index:i}).show()})}
function setupStarterRotation(){var $centerItem=data.itemsContainer.children('img').eq(options.startingItem-1);var $previousItems=$centerItem.prevAll();var $nextItems=$centerItem.nextAll();data.carouselRotationsLeft=1;var counter;counter=1;$previousItems.each(function(){for(i=0;i<counter;i++){moveItem($(this),false)}
counter++});counter=1;$nextItems.each(function(){for(i=0;i<counter;i++){moveItem($(this),true)}
counter++})}
function setupSlider(){$("#slider").slider({min:1,max:data.items.length,step:1,value:options.startingItem,animate:true,stop: function(){stopAnimations();data.currentlyMoving=false;var oldValue=$('#slider').slider('value');var positionOfItem=data.items[oldValue-1].data().currentPosition;if(positionOfItem<0){rotateCarousel(true,Math.abs(positionOfItem))} else if(positionOfItem>0){rotateCarousel(false,positionOfItem)}}})}
function performCalculations($item,newPosition){var oldPosition=$item.data().currentPosition;var newDistanceFromCenter=Math.abs(newPosition);var oldWidth=$item.data().width,newWidth=$item.data().owidth;var oldHeight=$item.data().height,newHeight=$item.data().oheight;for(var i=0;i<newDistanceFromCenter;i++){newWidth=newWidth * options.itemDecreaseFactor;newHeight=newHeight * options.itemDecreaseFactor}
var widthDifference=Math.abs(oldWidth-newWidth);var heightDifference=Math.abs(oldHeight-newHeight);var waveSeparation=0,centeringNumber
if(orientation=="horizontal")
centeringNumber=heightDifference/2;else
centeringNumber=widthDifference/2;if((newPosition>-1&&(newPosition<oldPosition))||(newPosition<1&&(newPosition>oldPosition))){waveSeparation-=centeringNumber;waveSeparation+=data.waveDistances[Math.abs(newPosition)]} else if((newPosition>-1&&(newPosition>oldPosition))||(newPosition<1&&(newPosition<oldPosition))){waveSeparation+=centeringNumber;waveSeparation-=data.waveDistances[Math.abs(newPosition)-1]}
var itemSeparation=0;if(Math.abs(newPosition)<Math.abs(oldPosition)){itemSeparation=data.itemDistances[Math.abs(newPosition)]} else{itemSeparation=data.itemDistances[Math.abs(newPosition)-1]}
if(newPosition>0||(newPosition==0&&oldPosition==1)){if(orientation=="horizontal")
itemSeparation+=widthDifference;else
itemSeparation+=heightDifference}
if(newPosition<oldPosition){itemSeparation=itemSeparation *-1}
var newOpacity;if(newPosition==0){newOpacity=1} else{newOpacity=data.itemOpacities[Math.abs(newPosition)-1]}
var newTop=$item.data().top;var newLeft=$item.data().left;if(orientation=="horizontal"){newTop=$item.data().top+waveSeparation;newLeft=$item.data().left+itemSeparation} else{newTop=$item.data().top+itemSeparation;newLeft=$item.data().left+waveSeparation}
var newDepth=options.flankingItems+2-newDistanceFromCenter;$item.data('width',newWidth);$item.data('height',newHeight);$item.data('top',newTop);$item.data('left',newLeft);$item.data('currentPosition',newPosition);$item.data('depth',newDepth);$item.data('opacity',newOpacity)}
function moveItem($item,direction){var oldPosition=$item.data('currentPosition'),newPosition;if(direction==false){newPosition=oldPosition-1} else{newPosition=oldPosition+1}
if(newPosition==1){$item.addClass("clickedcenter")}
if(Math.abs(newPosition)<=options.flankingItems+1){data.itemsAnimating++;performCalculations($item,newPosition);$item.css('z-index',$item.data().depth);$item.animate({left:$item.data().left,width:$item.data().width,height:$item.data().height,top:$item.data().top,opacity:$item.data().opacity},data.currentSpeed,options.animationEasing, function(){itemAnimationComplete($item,newPosition,direction)})} else if(Math.abs(newPosition)>options.flankingItems){$item.data('currentPosition',newPosition)}}
function itemAnimationComplete($item,newPosition,direction){if(newPosition==0){options.movedToCenter($item)}
data.itemsAnimating--;if(data.itemsAnimating==0){data.carouselRotationsLeft-=1;data.currentlyMoving=false;if(data.carouselRotationsLeft>0){rotateCarousel(direction,0)} else{data.currentSpeed=options.speed}}}
function stopAnimations(){for(var i=0;i<data.items.length;i++){data.items[i].stop()}}
function rotationAllowed(direction){if(data.currentlyMoving==true)
return false;if(direction==true&&data.items[0].data().currentPosition==0)
return false;if(direction==false&&data.items[data.totalItems-1].data().currentPosition==0)
return false;return true}
function rotateCarousel(direction,rotations){if(rotationAllowed(direction)){data.currentlyMoving=true;data.itemsAnimating=0;data.carouselRotationsLeft+=rotations;if(options.quickerForFurther==true){if(rotations>1){data.currentSpeed=options.speed/rotations}
data.currentSpeed=(data.currentSpeed<100)?100:data.currentSpeed} else{data.currentSpeed=options.speed}
for(var i=0;i<data.items.length;i++){var $item=$(data.items[i]);var currrentPosition=$item.data().currentPosition;if(currrentPosition>=((options.flankingItems*-1)-1)&&currrentPosition<=(options.flankingItems)+1){moveItem($item,direction)} else{if(direction==true){$item.data('currentPosition',currrentPosition+1)} else{$item.data('currentPosition',currrentPosition-1)}}}}}
$('img',data.containerIDTag).live("click", function(){var itemPosition=$(this).data().currentPosition;var rotations=Math.abs(itemPosition);if(itemPosition<0){rotateCarousel(true,rotations)} else if(itemPosition>0){rotateCarousel(false,rotations)} else{options.clickedCenter(a($(this)))}});
function a(imgfile){thisfile=imgfile.attr("id");texttitle='<img src="'+jQuery("#big"+thisfile).attr("src")+'"/><p style="color:#fff;">'+jQuery("#big"+thisfile).attr("title")+'</p>'
jQuery(texttitle).modal({overlayClose:true,opacity:80,overlayCss:{backgroundColor:"#000"},onOpen: function(dialog){dialog.overlay.fadeIn('fast', function(){dialog.data.hide();dialog.container.fadeIn('fast', function(){dialog.data.fadeIn('fast')})})},onClose: function(dialog){dialog.data.fadeOut('fast', function(){dialog.container.hide('fast', function(){dialog.overlay.fadeOut('fast', function(){jQuery.modal.close()})})})}})}
$('#left').click(function(){rotateCarousel(false,1)});$('#right').click(function(){rotateCarousel(true,1)})})};$.fn.waterwheelCarousel.defaults={startingItem:1,startingItemSeparation:150,itemSeparationFactor:.5,startingWaveSeparation:30,waveSeparationFactor:.75,itemDecreaseFactor:.8,opacityDecreaseFactor:.5,centerOffset:40,flankingItems:4,speed:300,animationEasing:'linear',quickerForFurther:true,movedToCenter:$.noop,clickedCenter:$.noop}})(jQuery);