/**
 * 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('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() * 0.5),
                height: Math.floor(ref.height() * 0.5)
            },
            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)
};