New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2124 insertions, 0 deletions

diff --git a/web/gui/lib/d3pie-0.2.1-netdata-3.js b/web/gui/lib/d3pie-0.2.1-netdata-3.js
new file mode 100644
index 000000000..3b00b495b
--- /dev/null
+++ b/web/gui/lib/d3pie-0.2.1-netdata-3.js
@@ -0,0 +1,2124 @@
+/*!
+ * d3pie
+ * @author Ben Keen
+ * @version 0.1.9
+ * @date June 17th, 2015
+ * @repo http://github.com/benkeen/d3pie
+ * SPDX-License-Identifier: MIT
+ */
+
+// UMD pattern from https://github.com/umdjs/umd/blob/master/returnExports.js
+(function(root, factory) {
+  if (typeof define === 'function' && define.amd) {
+    // AMD. Register as an anonymous module
+    define([], factory);
+  } else if (typeof exports === 'object') {
+    // Node. Does not work with strict CommonJS, but only CommonJS-like environments that support module.exports,
+    // like Node
+    module.exports = factory();
+  } else {
+    // browser globals (root is window)
+    root.d3pie = factory(root);
+  }
+}(this, function() {
+
+    var _scriptName = "d3pie";
+    var _version = "0.2.1";
+
+    // used to uniquely generate IDs and classes, ensuring no conflict between multiple pies on the same page
+    var _uniqueIDCounter = 0;
+
+
+    // this section includes all helper libs on the d3pie object. They're populated via grunt-template. Note: to keep
+    // the syntax highlighting from getting all messed up, I commented out each line. That REQUIRES each of the files
+    // to have an empty first line. Crumby, yes, but acceptable.
+    //// --------- _default-settings.js -----------/**
+/**
+ * Contains the out-the-box settings for the script. Any of these settings that aren't explicitly overridden for the
+ * d3pie instance will inherit from these. This is also included on the main website for use in the generation script.
+ */
+var defaultSettings = {
+    header: {
+        title: {
+            text:     "",
+            color:    "#333333",
+            fontSize: 18,
+            fontWeight: "bold",
+            font:     "arial"
+        },
+        subtitle: {
+            text:     "",
+            color:    "#666666",
+            fontSize: 14,
+            fontWeight: "bold",
+            font:     "arial"
+        },
+        location: "top-center",
+        titleSubtitlePadding: 8
+    },
+    footer: {
+        text: 	  "",
+        color:    "#666666",
+        fontSize: 14,
+        fontWeight: "bold",
+        font:     "arial",
+        location: "left"
+    },
+    size: {
+        canvasHeight: 500,
+        canvasWidth: 500,
+        pieInnerRadius: "0%",
+        pieOuterRadius: null
+    },
+    data: {
+        sortOrder: "none",
+        ignoreSmallSegments: {
+            enabled: false,
+            valueType: "percentage",
+            value: null
+        },
+        smallSegmentGrouping: {
+            enabled: false,
+            value: 1,
+            valueType: "percentage",
+            label: "Other",
+            color: "#cccccc"
+        },
+        content: []
+    },
+    labels: {
+        outer: {
+            format: "label",
+            hideWhenLessThanPercentage: null,
+            pieDistance: 30
+        },
+        inner: {
+            format: "percentage",
+            hideWhenLessThanPercentage: null
+        },
+        mainLabel: {
+            color: "#333333",
+            font: "arial",
+            fontWeight: "normal",
+            fontSize: 10
+        },
+        percentage: {
+            color: "#dddddd",
+            font: "arial",
+            fontWeight: "bold",
+            fontSize: 10,
+            decimalPlaces: 0
+        },
+        value: {
+            color: "#cccc44",
+            fontWeight: "bold",
+            font: "arial",
+            fontSize: 10
+        },
+        lines: {
+            enabled: true,
+            style: "curved",
+            color: "segment"
+        },
+        truncation: {
+            enabled: false,
+            truncateLength: 30
+        },
+    formatter: null
+    },
+    effects: {
+        load: {
+            effect: "none", // "default", commented in the code
+            speed: 1000
+        },
+        pullOutSegmentOnClick: {
+            effect: "none", // "bounce", commented in the code
+            speed: 300,
+            size: 10
+        },
+        highlightSegmentOnMouseover: false,
+        highlightLuminosity: -0.2
+    },
+    tooltips: {
+        enabled: false,
+        type: "placeholder", // caption|placeholder
+        string: "",
+        placeholderParser: null,
+        styles: {
+        fadeInSpeed: 250,
+        backgroundColor: "#000000",
+        backgroundOpacity: 0.5,
+        color: "#efefef",
+        borderRadius: 2,
+        font: "arial",
+        fontWeight: "bold",
+        fontSize: 10,
+        padding: 4
+        }
+    },
+    misc: {
+        colors: {
+            background: null,
+            segments: [
+                "#2484c1", "#65a620", "#7b6888", "#a05d56", "#961a1a", "#d8d23a", "#e98125", "#d0743c", "#635222", "#6ada6a",
+                "#0c6197", "#7d9058", "#207f33", "#44b9b0", "#bca44a", "#e4a14b", "#a3acb2", "#8cc3e9", "#69a6f9", "#5b388f",
+                "#546e91", "#8bde95", "#d2ab58", "#273c71", "#98bf6e", "#4daa4b", "#98abc5", "#cc1010", "#31383b", "#006391",
+                "#c2643f", "#b0a474", "#a5a39c", "#a9c2bc", "#22af8c", "#7fcecf", "#987ac6", "#3d3b87", "#b77b1c", "#c9c2b6",
+                "#807ece", "#8db27c", "#be66a2", "#9ed3c6", "#00644b", "#005064", "#77979f", "#77e079", "#9c73ab", "#1f79a7"
+            ],
+            segmentStroke: "#ffffff"
+        },
+        gradient: {
+            enabled: false,
+            percentage: 95,
+            color: "#000000"
+        },
+        canvasPadding: {
+            top: 5,
+            right: 5,
+            bottom: 5,
+            left: 5
+        },
+        pieCenterOffset: {
+            x: 0,
+            y: 0
+        },
+        cssPrefix: null
+    },
+    callbacks: {
+        onload: null,
+        onMouseoverSegment: null,
+        onMouseoutSegment: null,
+        onClickSegment: null
+    }
+};
+
+    //// --------- validate.js -----------
+var validate = {
+
+    // called whenever a new pie chart is created
+    initialCheck: function(pie) {
+        var cssPrefix = pie.cssPrefix;
+        var element = pie.element;
+        var options = pie.options;
+
+        // confirm d3 is available [check minimum version]
+        if (!window.d3 || !window.d3.hasOwnProperty("version")) {
+            console.error("d3pie error: d3 is not available");
+            return false;
+        }
+
+        // confirm element is either a DOM element or a valid string for a DOM element
+        if (!(element instanceof HTMLElement || element instanceof SVGElement)) {
+            console.error("d3pie error: the first d3pie() param must be a valid DOM element (not jQuery) or a ID string.");
+            return false;
+        }
+
+        // confirm the CSS prefix is valid. It has to start with a-Z and contain nothing but a-Z0-9_-
+        if (!(/[a-zA-Z][a-zA-Z0-9_-]*$/.test(cssPrefix))) {
+            console.error("d3pie error: invalid options.misc.cssPrefix");
+            return false;
+        }
+
+        // confirm some data has been supplied
+        if (!helpers.isArray(options.data.content)) {
+            console.error("d3pie error: invalid config structure: missing data.content property.");
+            return false;
+        }
+        if (options.data.content.length === 0) {
+            console.error("d3pie error: no data supplied.");
+            return false;
+        }
+
+        // clear out any invalid data. Each data row needs a valid positive number and a label
+        var data = [];
+        for (var i=0; i<options.data.content.length; i++) {
+            if (typeof options.data.content[i].value !== "number" || isNaN(options.data.content[i].value)) {
+                console.log("not valid: ", options.data.content[i]);
+                continue;
+            }
+            if (options.data.content[i].value <= 0) {
+                console.log("not valid - should have positive value: ", options.data.content[i]);
+                continue;
+            }
+            data.push(options.data.content[i]);
+        }
+        pie.options.data.content = data;
+
+        // labels.outer.hideWhenLessThanPercentage - 1-100
+        // labels.inner.hideWhenLessThanPercentage - 1-100
+
+        return true;
+    }
+};
+
+    //// --------- helpers.js -----------
+var helpers = {
+
+    // creates the SVG element
+    addSVGSpace: function(pie) {
+        var element = pie.element;
+        var canvasWidth = pie.options.size.canvasWidth;
+        var canvasHeight = pie.options.size.canvasHeight;
+        var backgroundColor = pie.options.misc.colors.background;
+
+        var svg = d3.select(element).append("svg:svg")
+            .attr("width", canvasWidth)
+            .attr("height", canvasHeight);
+
+        if (backgroundColor !== "transparent") {
+            svg.style("background-color", function() { return backgroundColor; });
+        }
+
+        return svg;
+    },
+
+    shuffleArray: function(array) {
+        var currentIndex = array.length, tmpVal, randomIndex;
+
+        while (0 !== currentIndex) {
+            randomIndex = Math.floor(Math.random() * currentIndex);
+            currentIndex -= 1;
+
+            // and swap it with the current element
+            tmpVal = array[currentIndex];
+            array[currentIndex] = array[randomIndex];
+            array[randomIndex] = tmpVal;
+        }
+        return array;
+    },
+
+    processObj: function(obj, is, value) {
+        if (typeof is === 'string') {
+            return helpers.processObj(obj, is.split('.'), value);
+        } else if (is.length === 1 && value !== undefined) {
+            obj[is[0]] = value;
+            return obj[is[0]];
+        } else if (is.length === 0) {
+            return obj;
+        } else {
+            return helpers.processObj(obj[is[0]], is.slice(1), value);
+        }
+    },
+
+    getDimensions: function(el) {
+        if(typeof el === 'string')
+            el = document.getElementById(el);
+
+        var w = 0, h = 0;
+        if (el) {
+            var dimensions = el.getBBox();
+            w = dimensions.width;
+            h = dimensions.height;
+        }
+        else {
+            console.log("error: getDimensions() " + id + " not found.");
+        }
+
+        return { w: w, h: h };
+    },
+
+    /**
+     * This is based on the SVG coordinate system, where top-left is 0,0 and bottom right is n-n.
+     * @param r1
+     * @param r2
+     * @returns {boolean}
+     */
+    rectIntersect: function(r1, r2) {
+        var returnVal = (
+            // r2.left > r1.right
+            (r2.x > (r1.x + r1.w)) ||
+
+            // r2.right < r1.left
+            ((r2.x + r2.w) < r1.x) ||
+
+            // r2.top < r1.bottom
+            ((r2.y + r2.h) < r1.y) ||
+
+            // r2.bottom > r1.top
+            (r2.y > (r1.y + r1.h))
+        );
+
+        return !returnVal;
+    },
+
+    /**
+     * Returns a lighter/darker shade of a hex value, based on a luminance value passed.
+     * @param hex a hex color value such as “#abc” or “#123456″ (the hash is optional)
+     * @param lum the luminosity factor: -0.1 is 10% darker, 0.2 is 20% lighter, etc.
+     * @returns {string}
+     */
+    getColorShade: function(hex, lum) {
+
+        // validate hex string
+        hex = String(hex).replace(/[^0-9a-f]/gi, '');
+        if (hex.length < 6) {
+            hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2];
+        }
+        lum = lum || 0;
+
+        // convert to decimal and change luminosity
+        var newHex = "#";
+        for (var i=0; i<3; i++) {
+            var c = parseInt(hex.substr(i * 2, 2), 16);
+            c = Math.round(Math.min(Math.max(0, c + (c * lum)), 255)).toString(16);
+            newHex += ("00" + c).substr(c.length);
+        }
+
+        return newHex;
+    },
+
+    /**
+     * Users can choose to specify segment colors in three ways (in order of precedence):
+     * 	1. include a "color" attribute for each row in data.content
+     * 	2. include a misc.colors.segments property which contains an array of hex codes
+     * 	3. specify nothing at all and rely on this lib provide some reasonable defaults
+     *
+     * This function sees what's included and populates this.options.colors with whatever's required
+     * for this pie chart.
+     * @param data
+     */
+    initSegmentColors: function(pie) {
+        var data   = pie.options.data.content;
+        var colors = pie.options.misc.colors.segments;
+
+        // TODO this needs a ton of error handling
+
+        var finalColors = [];
+        for (var i=0; i<data.length; i++) {
+            if (data[i].hasOwnProperty("color")) {
+                finalColors.push(data[i].color);
+            } else {
+                finalColors.push(colors[i]);
+            }
+        }
+
+        return finalColors;
+    },
+
+    applySmallSegmentGrouping: function(data, smallSegmentGrouping) {
+        var totalSize;
+        if (smallSegmentGrouping.valueType === "percentage") {
+            totalSize = math.getTotalPieSize(data);
+        }
+
+        // loop through each data item
+        var newData = [];
+        var groupedData = [];
+        var totalGroupedData = 0;
+        for (var i=0; i<data.length; i++) {
+            if (smallSegmentGrouping.valueType === "percentage") {
+                var dataPercent = (data[i].value / totalSize) * 100;
+                if (dataPercent <= smallSegmentGrouping.value) {
+                    groupedData.push(data[i]);
+                    totalGroupedData += data[i].value;
+                    continue;
+                }
+                data[i].isGrouped = false;
+                newData.push(data[i]);
+            } else {
+                if (data[i].value <= smallSegmentGrouping.value) {
+                    groupedData.push(data[i]);
+                    totalGroupedData += data[i].value;
+                    continue;
+                }
+                data[i].isGrouped = false;
+                newData.push(data[i]);
+            }
+        }
+
+        // we're done! See if there's any small segment groups to add
+        if (groupedData.length) {
+            newData.push({
+                color: smallSegmentGrouping.color,
+                label: smallSegmentGrouping.label,
+                value: totalGroupedData,
+                isGrouped: true,
+                groupedData: groupedData
+            });
+        }
+
+        return newData;
+    },
+
+    // for debugging
+    showPoint: function(svg, x, y) {
+        svg.append("circle").attr("cx", x).attr("cy", y).attr("r", 2).style("fill", "black");
+    },
+
+    isFunction: function(functionToCheck) {
+        var getType = {};
+        return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+    },
+
+    isArray: function(o) {
+        return Object.prototype.toString.call(o) === '[object Array]';
+    }
+};
+
+
+// taken from jQuery
+var extend = function() {
+    var options, name, src, copy, copyIsArray, clone, target = arguments[0] || {},
+        i = 1,
+        length = arguments.length,
+        deep = false,
+        toString = Object.prototype.toString,
+        hasOwn = Object.prototype.hasOwnProperty,
+        class2type = {
+            "[object Boolean]": "boolean",
+            "[object Number]": "number",
+            "[object String]": "string",
+            "[object Function]": "function",
+            "[object Array]": "array",
+            "[object Date]": "date",
+            "[object RegExp]": "regexp",
+            "[object Object]": "object"
+        },
+
+        jQuery = {
+            isFunction: function (obj) {
+                return jQuery.type(obj) === "function";
+            },
+            isArray: Array.isArray ||
+                function (obj) {
+                    return jQuery.type(obj) === "array";
+                },
+            isWindow: function (obj) {
+                return obj !== null && obj === obj.window;
+            },
+            isNumeric: function (obj) {
+                return !isNaN(parseFloat(obj)) && isFinite(obj);
+            },
+            type: function (obj) {
+                return obj === null ? String(obj) : class2type[toString.call(obj)] || "object";
+            },
+            isPlainObject: function (obj) {
+                if (!obj || jQuery.type(obj) !== "object" || obj.nodeType) {
+                    return false;
+                }
+                try {
+                    if (obj.constructor && !hasOwn.call(obj, "constructor") && !hasOwn.call(obj.constructor.prototype, "isPrototypeOf")) {
+                        return false;
+                    }
+                } catch (e) {
+                    return false;
+                }
+                var key;
+                for (key in obj) {}
+                return key === undefined || hasOwn.call(obj, key);
+            }
+        };
+    if (typeof target === "boolean") {
+        deep = target;
+        target = arguments[1] || {};
+        i = 2;
+    }
+    if (typeof target !== "object" && !jQuery.isFunction(target)) {
+        target = {};
+    }
+    if (length === i) {
+        target = this;
+        --i;
+    }
+    for (i; i < length; i++) {
+        if ((options = arguments[i]) !== null) {
+            for (name in options) {
+                src = target[name];
+                copy = options[name];
+                if (target === copy) {
+                    continue;
+                }
+                if (deep && copy && (jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)))) {
+                    if (copyIsArray) {
+                        copyIsArray = false;
+                        clone = src && jQuery.isArray(src) ? src : [];
+                    } else {
+                        clone = src && jQuery.isPlainObject(src) ? src : {};
+                    }
+                    // WARNING: RECURSION
+                    target[name] = extend(deep, clone, copy);
+                } else if (copy !== undefined) {
+                    target[name] = copy;
+                }
+            }
+        }
+    }
+    return target;
+};
+    //// --------- math.js -----------
+var math = {
+
+    toRadians: function(degrees) {
+        return degrees * (Math.PI / 180);
+    },
+
+    toDegrees: function(radians) {
+        return radians * (180 / Math.PI);
+    },
+
+    computePieRadius: function(pie) {
+        var size = pie.options.size;
+        var canvasPadding = pie.options.misc.canvasPadding;
+
+        // outer radius is either specified (e.g. through the generator), or omitted altogether
+        // and calculated based on the canvas dimensions. Right now the estimated version isn't great - it should
+        // be possible to calculate it to precisely generate the maximum sized pie, but it's fussy as heck. Something
+        // for the next release.
+
+        // first, calculate the default _outerRadius
+        var w = size.canvasWidth - canvasPadding.left - canvasPadding.right;
+        var h = size.canvasHeight - canvasPadding.top - canvasPadding.bottom;
+
+        // now factor in the footer, title & subtitle
+        if (pie.options.header.location !== "pie-center") {
+            h -= pie.textComponents.headerHeight;
+        }
+
+        if (pie.textComponents.footer.exists) {
+            h -= pie.textComponents.footer.h;
+        }
+
+        // for really teeny pies, h may be < 0. Adjust it back
+        h = (h < 0) ? 0 : h;
+
+        var outerRadius = ((w < h) ? w : h) / 3;
+        var innerRadius, percent;
+
+        // if the user specified something, use that instead
+        if (size.pieOuterRadius !== null) {
+            if (/%/.test(size.pieOuterRadius)) {
+                percent = parseInt(size.pieOuterRadius.replace(/[\D]/, ""), 10);
+                percent = (percent > 99) ? 99 : percent;
+                percent = (percent < 0) ? 0 : percent;
+
+                var smallestDimension = (w < h) ? w : h;
+
+                // now factor in the label line size
+                if (pie.options.labels.outer.format !== "none") {
+                    var pieDistanceSpace = parseInt(pie.options.labels.outer.pieDistance, 10) * 2;
+                    if (smallestDimension - pieDistanceSpace > 0) {
+                        smallestDimension -= pieDistanceSpace;
+                    }
+                }
+
+                outerRadius = Math.floor((smallestDimension / 100) * percent) / 2;
+            } else {
+                outerRadius = parseInt(size.pieOuterRadius, 10);
+            }
+        }
+
+        // inner radius
+        if (/%/.test(size.pieInnerRadius)) {
+            percent = parseInt(size.pieInnerRadius.replace(/[\D]/, ""), 10);
+            percent = (percent > 99) ? 99 : percent;
+            percent = (percent < 0) ? 0 : percent;
+            innerRadius = Math.floor((outerRadius / 100) * percent);
+        } else {
+            innerRadius = parseInt(size.pieInnerRadius, 10);
+        }
+
+        pie.innerRadius = innerRadius;
+        pie.outerRadius = outerRadius;
+    },
+
+    getTotalPieSize: function(data) {
+        var totalSize = 0;
+        for (var i=0; i<data.length; i++) {
+            totalSize += data[i].value;
+        }
+        return totalSize;
+    },
+
+    sortPieData: function(pie) {
+        var data                 = pie.options.data.content;
+        var sortOrder            = pie.options.data.sortOrder;
+
+        switch (sortOrder) {
+            case "none":
+                // do nothing
+                break;
+            case "random":
+                data = helpers.shuffleArray(data);
+                break;
+            case "value-asc":
+                data.sort(function(a, b) { return (a.value < b.value) ? -1 : 1; });
+                break;
+            case "value-desc":
+                data.sort(function(a, b) { return (a.value < b.value) ? 1 : -1; });
+                break;
+            case "label-asc":
+                data.sort(function(a, b) { return (a.label.toLowerCase() > b.label.toLowerCase()) ? 1 : -1; });
+                break;
+            case "label-desc":
+                data.sort(function(a, b) { return (a.label.toLowerCase() < b.label.toLowerCase()) ? 1 : -1; });
+                break;
+        }
+
+        return data;
+    },
+
+    // var pieCenter = math.getPieCenter();
+    getPieTranslateCenter: function(pieCenter) {
+        return "translate(" + pieCenter.x + "," + pieCenter.y + ")";
+    },
+
+    /**
+     * Used to determine where on the canvas the center of the pie chart should be. It takes into account the
+     * height and position of the title, subtitle and footer, and the various paddings.
+     * @private
+     */
+    calculatePieCenter: function(pie) {
+        var pieCenterOffset = pie.options.misc.pieCenterOffset;
+        var hasTopTitle    = (pie.textComponents.title.exists && pie.options.header.location !== "pie-center");
+        var hasTopSubtitle = (pie.textComponents.subtitle.exists && pie.options.header.location !== "pie-center");
+
+        var headerOffset = pie.options.misc.canvasPadding.top;
+        if (hasTopTitle && hasTopSubtitle) {
+            headerOffset += pie.textComponents.title.h + pie.options.header.titleSubtitlePadding + pie.textComponents.subtitle.h;
+        } else if (hasTopTitle) {
+            headerOffset += pie.textComponents.title.h;
+        } else if (hasTopSubtitle) {
+            headerOffset += pie.textComponents.subtitle.h;
+        }
+
+        var footerOffset = 0;
+        if (pie.textComponents.footer.exists) {
+            footerOffset = pie.textComponents.footer.h + pie.options.misc.canvasPadding.bottom;
+        }
+
+        var x = ((pie.options.size.canvasWidth - pie.options.misc.canvasPadding.left - pie.options.misc.canvasPadding.right) / 2) + pie.options.misc.canvasPadding.left;
+        var y = ((pie.options.size.canvasHeight - footerOffset - headerOffset) / 2) + headerOffset;
+
+        x += pieCenterOffset.x;
+        y += pieCenterOffset.y;
+
+        pie.pieCenter = { x: x, y: y };
+    },
+
+
+    /**
+     * Rotates a point (x, y) around an axis (xm, ym) by degrees (a).
+     * @param x
+     * @param y
+     * @param xm
+     * @param ym
+     * @param a angle in degrees
+     * @returns {Array}
+     */
+    rotate: function(x, y, xm, ym, a) {
+
+        a = a * Math.PI / 180; // convert to radians
+
+        var cos = Math.cos,
+            sin = Math.sin,
+        // subtract midpoints, so that midpoint is translated to origin and add it in the end again
+        xr = (x - xm) * cos(a) - (y - ym) * sin(a) + xm,
+        yr = (x - xm) * sin(a) + (y - ym) * cos(a) + ym;
+
+        return { x: xr, y: yr };
+    },
+
+    /**
+     * Translates a point x, y by distance d, and by angle a.
+     * @param x
+     * @param y
+     * @param dist
+     * @param a angle in degrees
+     */
+    translate: function(x, y, d, a) {
+        var rads = math.toRadians(a);
+        return {
+            x: x + d * Math.sin(rads),
+            y: y - d * Math.cos(rads)
+        };
+    },
+
+    // from: http://stackoverflow.com/questions/19792552/d3-put-arc-labels-in-a-pie-chart-if-there-is-enough-space
+    pointIsInArc: function(pt, ptData, d3Arc) {
+        // Center of the arc is assumed to be 0,0
+        // (pt.x, pt.y) are assumed to be relative to the center
+        var r1 = d3Arc.innerRadius()(ptData), // Note: Using the innerRadius
+            r2 = d3Arc.outerRadius()(ptData),
+            theta1 = d3Arc.startAngle()(ptData),
+            theta2 = d3Arc.endAngle()(ptData);
+
+        var dist = pt.x * pt.x + pt.y * pt.y,
+            angle = Math.atan2(pt.x, -pt.y); // Note: different coordinate system
+
+        angle = (angle < 0) ? (angle + Math.PI * 2) : angle;
+
+        return (r1 * r1 <= dist) && (dist <= r2 * r2) &&
+            (theta1 <= angle) && (angle <= theta2);
+    }
+};
+
+    //// --------- labels.js -----------
+var labels = {
+
+    /**
+     * Adds the labels to the pie chart, but doesn't position them. There are two locations for the
+     * labels: inside (center) of the segments, or outside the segments on the edge.
+     * @param section "inner" or "outer"
+     * @param sectionDisplayType "percentage", "value", "label", "label-value1", etc.
+     * @param pie
+     */
+    add: function(pie, section, sectionDisplayType) {
+        var include = labels.getIncludes(sectionDisplayType);
+        var settings = pie.options.labels;
+
+        // group the label groups (label, percentage, value) into a single element for simpler positioning
+        var outerLabel = pie.svg.insert("g", "." + pie.cssPrefix + "labels-" + section)
+            .attr("class", pie.cssPrefix + "labels-" + section);
+
+        var labelGroup = pie.__labels[section] = outerLabel.selectAll("." + pie.cssPrefix + "labelGroup-" + section)
+            .data(pie.options.data.content)
+            .enter()
+            .append("g")
+            .attr("id", function(d, i) { return pie.cssPrefix + "labelGroup" + i + "-" + section; })
+            .attr("data-index", function(d, i) { return i; })
+            .attr("class", pie.cssPrefix + "labelGroup-" + section)
+            .style("opacity", 0);
+
+        var formatterContext = { section: section, sectionDisplayType: sectionDisplayType };
+
+        // 1. Add the main label
+        if (include.mainLabel) {
+            labelGroup.append("text")
+                .attr("id", function(d, i) { return pie.cssPrefix + "segmentMainLabel" + i + "-" + section; })
+                .attr("class", pie.cssPrefix + "segmentMainLabel-" + section)
+                .text(function(d, i) {
+                    var str = d.label;
+
+                    // if a custom formatter has been defined, pass it the raw label string - it can do whatever it wants with it.
+                    // we only apply truncation if it's not defined
+                    if (settings.formatter) {
+                        formatterContext.index = i;
+                        formatterContext.part = 'mainLabel';
+                        formatterContext.value = d.value;
+                        formatterContext.label = str;
+                        str = settings.formatter(formatterContext);
+                    } else if (settings.truncation.enabled && d.label.length > settings.truncation.truncateLength) {
+                        str = d.label.substring(0, settings.truncation.truncateLength) + "...";
+                    }
+                    return str;
+                })
+                .style("font-size", settings.mainLabel.fontSize + "px")
+                .style("font-family", settings.mainLabel.font)
+                .style("font-weight", settings.mainLabel.fontWeight)
+                .style("fill", function(d, i) {
+                    return (settings.mainLabel.color === "segment") ? pie.options.colors[i] : settings.mainLabel.color;
+                });
+        }
+
+        // 2. Add the percentage label
+        if (include.percentage) {
+            labelGroup.append("text")
+                .attr("id", function(d, i) { return pie.cssPrefix + "segmentPercentage" + i + "-" + section; })
+                .attr("class", pie.cssPrefix + "segmentPercentage-" + section)
+                .text(function(d, i) {
+                    var percentage = d.percentage;
+                    if (settings.formatter) {
+                        formatterContext.index = i;
+                        formatterContext.part = "percentage";
+                        formatterContext.value = d.value;
+                        formatterContext.label = d.percentage;
+                        percentage = settings.formatter(formatterContext);
+                    } else {
+                        percentage += "%";
+                    }
+                    return percentage;
+                })
+                .style("font-size", settings.percentage.fontSize + "px")
+                .style("font-family", settings.percentage.font)
+                .style("font-weight", settings.percentage.fontWeight)
+                .style("fill", settings.percentage.color);
+        }
+
+        // 3. Add the value label
+        if (include.value) {
+            labelGroup.append("text")
+                .attr("id", function(d, i) { return pie.cssPrefix +  "segmentValue" + i + "-" + section; })
+                .attr("class", pie.cssPrefix + "segmentValue-" + section)
+                .text(function(d, i) {
+                    formatterContext.index = i;
+                    formatterContext.part = "value";
+                    formatterContext.value = d.value;
+                    formatterContext.label = d.value;
+                    return settings.formatter ? settings.formatter(formatterContext, d.value) : d.value;
+                })
+                .style("font-size", settings.value.fontSize + "px")
+                .style("font-family", settings.value.font)
+                .style("font-weight", settings.value.fontWeight)
+                .style("fill", settings.value.color);
+        }
+    },
+
+    /**
+     * @param section "inner" / "outer"
+     */
+    positionLabelElements: function(pie, section, sectionDisplayType) {
+        labels["dimensions-" + section] = [];
+
+        // get the latest widths, heights
+        var labelGroups = pie.__labels[section];
+        labelGroups.each(function(d, i) {
+            var mainLabel  = d3.select(this).selectAll("." + pie.cssPrefix + "segmentMainLabel-" + section);
+            var percentage = d3.select(this).selectAll("." + pie.cssPrefix + "segmentPercentage-" + section);
+            var value      = d3.select(this).selectAll("." + pie.cssPrefix + "segmentValue-" + section);
+
+            labels["dimensions-" + section].push({
+                mainLabel:  (mainLabel.node() !== null) ? mainLabel.node().getBBox() : null,
+                percentage: (percentage.node() !== null) ? percentage.node().getBBox() : null,
+                value:      (value.node() !== null) ? value.node().getBBox() : null
+            });
+        });
+
+        var singleLinePad = 5;
+        var dims = labels["dimensions-" + section];
+        switch (sectionDisplayType) {
+            case "label-value1":
+                pie.svg.selectAll("." + pie.cssPrefix + "segmentValue-" + section)
+                    .attr("dx", function(d, i) { return dims[i].mainLabel.width + singleLinePad; });
+                break;
+            case "label-value2":
+                pie.svg.selectAll("." + pie.cssPrefix + "segmentValue-" + section)
+                    .attr("dy", function(d, i) { return dims[i].mainLabel.height; });
+                break;
+            case "label-percentage1":
+                pie.svg.selectAll("." + pie.cssPrefix + "segmentPercentage-" + section)
+                    .attr("dx", function(d, i) { return dims[i].mainLabel.width + singleLinePad; });
+                break;
+            case "label-percentage2":
+                pie.svg.selectAll("." + pie.cssPrefix + "segmentPercentage-" + section)
+                    .attr("dx", function(d, i) { return (dims[i].mainLabel.width / 2) - (dims[i].percentage.width / 2); })
+                    .attr("dy", function(d, i) { return dims[i].mainLabel.height; });
+                break;
+        }
+    },
+
+    computeLabelLinePositions: function(pie) {
+        pie.lineCoordGroups = [];
+        pie.__labels.outer
+            .each(function(d, i) { return labels.computeLinePosition(pie, i); });
+    },
+
+    computeLinePosition: function(pie, i) {
+        var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true });
+        var originCoords = math.rotate(pie.pieCenter.x, pie.pieCenter.y - pie.outerRadius, pie.pieCenter.x, pie.pieCenter.y, angle);
+        var heightOffset = pie.outerLabelGroupData[i].h / 5; // TODO check
+        var labelXMargin = 6; // the x-distance of the label from the end of the line [TODO configurable]
+
+        var quarter = Math.floor(angle / 90);
+        var midPoint = 4;
+        var x2, y2, x3, y3;
+
+        // this resolves an issue when the
+        if (quarter === 2 && angle === 180) {
+            quarter = 1;
+        }
+
+        switch (quarter) {
+            case 0:
+                x2 = pie.outerLabelGroupData[i].x - labelXMargin - ((pie.outerLabelGroupData[i].x - labelXMargin - originCoords.x) / 2);
+                y2 = pie.outerLabelGroupData[i].y + ((originCoords.y - pie.outerLabelGroupData[i].y) / midPoint);
+                x3 = pie.outerLabelGroupData[i].x - labelXMargin;
+                y3 = pie.outerLabelGroupData[i].y - heightOffset;
+                break;
+            case 1:
+                x2 = originCoords.x + (pie.outerLabelGroupData[i].x - originCoords.x) / midPoint;
+                y2 = originCoords.y + (pie.outerLabelGroupData[i].y - originCoords.y) / midPoint;
+                x3 = pie.outerLabelGroupData[i].x - labelXMargin;
+                y3 = pie.outerLabelGroupData[i].y - heightOffset;
+                break;
+            case 2:
+                var startOfLabelX = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin;
+                x2 = originCoords.x - (originCoords.x - startOfLabelX) / midPoint;
+                y2 = originCoords.y + (pie.outerLabelGroupData[i].y - originCoords.y) / midPoint;
+                x3 = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin;
+                y3 = pie.outerLabelGroupData[i].y - heightOffset;
+                break;
+            case 3:
+                var startOfLabel = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin;
+                x2 = startOfLabel + ((originCoords.x - startOfLabel) / midPoint);
+                y2 = pie.outerLabelGroupData[i].y + (originCoords.y - pie.outerLabelGroupData[i].y) / midPoint;
+                x3 = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin;
+                y3 = pie.outerLabelGroupData[i].y - heightOffset;
+                break;
+        }
+
+        /*
+         * x1 / y1: the x/y coords of the start of the line, at the mid point of the segments arc on the pie circumference
+         * x2 / y2: if "curved" line style is being used, this is the midpoint of the line. Other
+         * x3 / y3: the end of the line; closest point to the label
+         */
+        if (pie.options.labels.lines.style === "straight") {
+            pie.lineCoordGroups[i] = [
+                { x: originCoords.x, y: originCoords.y },
+                { x: x3, y: y3 }
+            ];
+        } else {
+            pie.lineCoordGroups[i] = [
+                { x: originCoords.x, y: originCoords.y },
+                { x: x2, y: y2 },
+                { x: x3, y: y3 }
+            ];
+        }
+    },
+
+    addLabelLines: function(pie) {
+        var lineGroups = pie.svg.insert("g", "." + pie.cssPrefix + "pieChart") // meaning, BEFORE .pieChart
+            .attr("class", pie.cssPrefix + "lineGroups")
+            .style("opacity", 1);
+
+        var lineGroup = lineGroups.selectAll("." + pie.cssPrefix + "lineGroup")
+            .data(pie.lineCoordGroups)
+            .enter()
+            .append("g")
+            .attr("class", pie.cssPrefix + "lineGroup");
+
+        var lineFunction = d3.line()
+            .curve(d3.curveBasis)
+            .x(function(d) { return d.x; })
+            .y(function(d) { return d.y; });
+
+        lineGroup.append("path")
+            .attr("d", lineFunction)
+            .attr("stroke", function(d, i) {
+                return (pie.options.labels.lines.color === "segment") ? pie.options.colors[i] : pie.options.labels.lines.color;
+            })
+            .attr("stroke-width", 1)
+            .attr("fill", "none")
+            .style("opacity", function(d, i) {
+                var percentage = pie.options.labels.outer.hideWhenLessThanPercentage;
+                var isHidden = (percentage !== null && d.percentage < percentage) || pie.options.data.content[i].label === "";
+                return isHidden ? 0 : 1;
+            });
+    },
+
+    positionLabelGroups: function(pie, section) {
+        if (pie.options.labels[section].format === "none")
+            return;
+
+        pie.__labels[section]
+            .style("opacity", function(d, i) {
+                var percentage = pie.options.labels[section].hideWhenLessThanPercentage;
+                return (percentage !== null && d.percentage < percentage) ? 0 : 1;
+            })
+            .attr("transform", function(d, i) {
+                var x, y;
+                if (section === "outer") {
+                    x = pie.outerLabelGroupData[i].x;
+                    y = pie.outerLabelGroupData[i].y;
+                } else {
+                    var pieCenterCopy = extend(true, {}, pie.pieCenter);
+
+                    // now recompute the "center" based on the current _innerRadius
+                    if (pie.innerRadius > 0) {
+                        var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true });
+                        var newCoords = math.translate(pie.pieCenter.x, pie.pieCenter.y, pie.innerRadius, angle);
+                        pieCenterCopy.x = newCoords.x;
+                        pieCenterCopy.y = newCoords.y;
+                    }
+
+                    var dims = helpers.getDimensions(pie.cssPrefix + "labelGroup" + i + "-inner");
+                    var xOffset = dims.w / 2;
+                    var yOffset = dims.h / 4; // confusing! Why 4? should be 2, but it doesn't look right
+
+                    x = pieCenterCopy.x + (pie.lineCoordGroups[i][0].x - pieCenterCopy.x) / 1.8;
+                    y = pieCenterCopy.y + (pie.lineCoordGroups[i][0].y - pieCenterCopy.y) / 1.8;
+
+                    x = x - xOffset;
+                    y = y + yOffset;
+                }
+
+                return "translate(" + x + "," + y + ")";
+            });
+    },
+
+
+    getIncludes: function(val) {
+        var addMainLabel  = false;
+        var addValue      = false;
+        var addPercentage = false;
+
+        switch (val) {
+            case "label":
+                addMainLabel = true;
+                break;
+            case "value":
+                addValue = true;
+                break;
+            case "percentage":
+                addPercentage = true;
+                break;
+            case "label-value1":
+            case "label-value2":
+                addMainLabel = true;
+                addValue = true;
+                break;
+            case "label-percentage1":
+            case "label-percentage2":
+                addMainLabel = true;
+                addPercentage = true;
+                break;
+        }
+        return {
+            mainLabel: addMainLabel,
+            value: addValue,
+            percentage: addPercentage
+        };
+    },
+
+
+    /**
+     * This does the heavy-lifting to compute the actual coordinates for the outer label groups. It does two things:
+     * 1. Make a first pass and position them in the ideal positions, based on the pie sizes
+     * 2. Do some basic collision avoidance.
+     */
+    computeOuterLabelCoords: function(pie) {
+
+        // 1. figure out the ideal positions for the outer labels
+        pie.__labels.outer
+            .each(function(d, i) {
+                return labels.getIdealOuterLabelPositions(pie, i);
+            });
+
+        // 2. now adjust those positions to try to accommodate conflicts
+        labels.resolveOuterLabelCollisions(pie);
+    },
+
+    /**
+     * This attempts to resolve label positioning collisions.
+     */
+    resolveOuterLabelCollisions: function(pie) {
+    if (pie.options.labels.outer.format === "none") {
+      return;
+    }
+
+        var size = pie.options.data.content.length;
+        labels.checkConflict(pie, 0, "clockwise", size);
+        labels.checkConflict(pie, size-1, "anticlockwise", size);
+    },
+
+    checkConflict: function(pie, currIndex, direction, size) {
+    var i, curr;
+
+        if (size <= 1) {
+            return;
+        }
+
+        var currIndexHemisphere = pie.outerLabelGroupData[currIndex].hs;
+        if (direction === "clockwise" && currIndexHemisphere !== "right") {
+            return;
+        }
+        if (direction === "anticlockwise" && currIndexHemisphere !== "left") {
+            return;
+        }
+        var nextIndex = (direction === "clockwise") ? currIndex+1 : currIndex-1;
+
+        // this is the current label group being looked at. We KNOW it's positioned properly (the first item
+        // is always correct)
+        var currLabelGroup = pie.outerLabelGroupData[currIndex];
+
+        // this one we don't know about. That's the one we're going to look at and move if necessary
+        var examinedLabelGroup = pie.outerLabelGroupData[nextIndex];
+
+        var info = {
+            labelHeights: pie.outerLabelGroupData[0].h,
+            center: pie.pieCenter,
+            lineLength: (pie.outerRadius + pie.options.labels.outer.pieDistance),
+            heightChange: pie.outerLabelGroupData[0].h + 1 // 1 = padding
+        };
+
+        // loop through *ALL* label groups examined so far to check for conflicts. This is because when they're
+        // very tightly fitted, a later label group may still appear high up on the page
+        if (direction === "clockwise") {
+      i = 0;
+            for (; i<=currIndex; i++) {
+                curr = pie.outerLabelGroupData[i];
+
+                // if there's a conflict with this label group, shift the label to be AFTER the last known
+                // one that's been properly placed
+                if (!labels.isLabelHidden(pie, i) && helpers.rectIntersect(curr, examinedLabelGroup)) {
+                    labels.adjustLabelPos(pie, nextIndex, currLabelGroup, info);
+                    break;
+                }
+            }
+        } else {
+      i = size - 1;
+            for (; i >= currIndex; i--) {
+                curr = pie.outerLabelGroupData[i];
+
+                // if there's a conflict with this label group, shift the label to be AFTER the last known
+                // one that's been properly placed
+                if (!labels.isLabelHidden(pie, i) && helpers.rectIntersect(curr, examinedLabelGroup)) {
+                    labels.adjustLabelPos(pie, nextIndex, currLabelGroup, info);
+                    break;
+                }
+            }
+        }
+        labels.checkConflict(pie, nextIndex, direction, size);
+    },
+
+    isLabelHidden: function(pie, index) {
+        var percentage = pie.options.labels.outer.hideWhenLessThanPercentage;
+        return (percentage !== null && d.percentage < percentage) || pie.options.data.content[index].label === "";
+    },
+
+    // does a little math to shift a label into a new position based on the last properly placed one
+    adjustLabelPos: function(pie, nextIndex, lastCorrectlyPositionedLabel, info) {
+        var xDiff, yDiff, newXPos, newYPos;
+        newYPos = lastCorrectlyPositionedLabel.y + info.heightChange;
+        yDiff = info.center.y - newYPos;
+
+        if (Math.abs(info.lineLength) > Math.abs(yDiff)) {
+            xDiff = Math.sqrt((info.lineLength * info.lineLength) - (yDiff * yDiff));
+        } else {
+            xDiff = Math.sqrt((yDiff * yDiff) - (info.lineLength * info.lineLength));
+        }
+
+        if (lastCorrectlyPositionedLabel.hs === "right") {
+            newXPos = info.center.x + xDiff;
+        } else {
+            newXPos = info.center.x - xDiff - pie.outerLabelGroupData[nextIndex].w;
+        }
+
+        pie.outerLabelGroupData[nextIndex].x = newXPos;
+        pie.outerLabelGroupData[nextIndex].y = newYPos;
+    },
+
+    /**
+     * @param i 0-N where N is the dataset size - 1.
+     */
+    getIdealOuterLabelPositions: function(pie, i) {
+        var labelGroupNode = pie.svg.select("#" + pie.cssPrefix + "labelGroup" + i + "-outer").node();
+        if (!labelGroupNode) return;
+
+        var labelGroupDims = labelGroupNode.getBBox();
+        var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true });
+
+        var originalX = pie.pieCenter.x;
+        var originalY = pie.pieCenter.y - (pie.outerRadius + pie.options.labels.outer.pieDistance);
+        var newCoords = math.rotate(originalX, originalY, pie.pieCenter.x, pie.pieCenter.y, angle);
+
+        // if the label is on the left half of the pie, adjust the values
+        var hemisphere = "right"; // hemisphere
+        if (angle > 180) {
+            newCoords.x -= (labelGroupDims.width + 8);
+            hemisphere = "left";
+        } else {
+            newCoords.x += 8;
+        }
+
+        pie.outerLabelGroupData[i] = {
+            x: newCoords.x,
+            y: newCoords.y,
+            w: labelGroupDims.width,
+            h: labelGroupDims.height,
+            hs: hemisphere
+        };
+    }
+};
+
+    //// --------- segments.js -----------
+var segments = {
+
+    effectMap: {
+        "none": d3.easeLinear,
+        "bounce": d3.easeBounce,
+        "linear": d3.easeLinear,
+        "sin": d3.easeSin,
+        "elastic": d3.easeElastic,
+        "back": d3.easeBack,
+        "quad": d3.easeQuad,
+        "circle": d3.easeCircle,
+        "exp": d3.easeExp
+    },
+
+    /**
+     * Creates the pie chart segments and displays them according to the desired load effect.
+     * @private
+     */
+    create: function(pie) {
+        var pieCenter = pie.pieCenter;
+        var colors = pie.options.colors;
+        var loadEffects = pie.options.effects.load;
+        var segmentStroke = pie.options.misc.colors.segmentStroke;
+
+        // we insert the pie chart BEFORE the title, to ensure the title overlaps the pie
+        var pieChartElement = pie.svg.insert("g", "#" + pie.cssPrefix + "title")
+            .attr("transform", function() { return math.getPieTranslateCenter(pieCenter); })
+            .attr("class", pie.cssPrefix + "pieChart");
+
+        var arc = d3.arc()
+            .innerRadius(pie.innerRadius)
+            .outerRadius(pie.outerRadius)
+            .startAngle(0)
+            .endAngle(function(d) {
+                return (d.value / pie.totalSize) * 2 * Math.PI;
+            });
+
+        var g = pieChartElement.selectAll("." + pie.cssPrefix + "arc")
+            .data(pie.options.data.content)
+            .enter()
+            .append("g")
+            .attr("class", pie.cssPrefix + "arc");
+
+        // if we're not fading in the pie, just set the load speed to 0
+        //var loadSpeed = loadEffects.speed;
+        //if (loadEffects.effect === "none") {
+        //	loadSpeed = 0;
+        //}
+
+        g.append("path")
+            .attr("id", function(d, i) { return pie.cssPrefix + "segment" + i; })
+            .attr("fill", function(d, i) {
+                var color = colors[i];
+                if (pie.options.misc.gradient.enabled) {
+                    color = "url(#" + pie.cssPrefix + "grad" + i + ")";
+                }
+                return color;
+            })
+            .style("stroke", segmentStroke)
+            .style("stroke-width", 1)
+            //.transition()
+            //.ease(d3.easeCubicInOut)
+            //.duration(loadSpeed)
+            .attr("data-index", function(d, i) { return i; })
+            .attr("d", arc);
+/*
+            .attrTween("d", function(b) {
+                var i = d3.interpolate({ value: 0 }, b);
+                return function(t) {
+                    var ret = pie.arc(i(t));
+                    console.log(ret);
+                    return ret;
+                };
+            });
+*/
+        pie.svg.selectAll("g." + pie.cssPrefix + "arc")
+            .attr("transform",
+            function(d, i) {
+                var angle = 0;
+                if (i > 0) {
+                    angle = segments.getSegmentAngle(i-1, pie.options.data.content, pie.totalSize);
+                }
+                return "rotate(" + angle + ")";
+            }
+        );
+        pie.arc = arc;
+    },
+
+    addGradients: function(pie) {
+        var grads = pie.svg.append("defs")
+            .selectAll("radialGradient")
+            .data(pie.options.data.content)
+            .enter().append("radialGradient")
+            .attr("gradientUnits", "userSpaceOnUse")
+            .attr("cx", 0)
+            .attr("cy", 0)
+            .attr("r", "120%")
+            .attr("id", function(d, i) { return pie.cssPrefix + "grad" + i; });
+
+        grads.append("stop").attr("offset", "0%").style("stop-color", function(d, i) { return pie.options.colors[i]; });
+        grads.append("stop").attr("offset", pie.options.misc.gradient.percentage + "%").style("stop-color", pie.options.misc.gradient.color);
+    },
+
+    addSegmentEventHandlers: function(pie) {
+        var arc = pie.svg.selectAll("." + pie.cssPrefix + "arc");
+        arc = arc.merge(pie.__labels.inner.merge(pie.__labels.outer));
+
+        arc.on("click", function() {
+            var currentEl = d3.select(this);
+            var segment;
+
+            // mouseover works on both the segments AND the segment labels, hence the following
+            if (currentEl.attr("class") === pie.cssPrefix + "arc") {
+                segment = currentEl.select("path");
+            } else {
+                var index = currentEl.attr("data-index");
+                segment = d3.select("#" + pie.cssPrefix + "segment" + index);
+            }
+
+            var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded";
+            segments.onSegmentEvent(pie, pie.options.callbacks.onClickSegment, segment, isExpanded);
+            if (pie.options.effects.pullOutSegmentOnClick.effect !== "none") {
+                if (isExpanded) {
+                    segments.closeSegment(pie, segment.node());
+                } else {
+                    segments.openSegment(pie, segment.node());
+                }
+            }
+        });
+
+        arc.on("mouseover", function() {
+            var currentEl = d3.select(this);
+            var segment, index;
+
+            if (currentEl.attr("class") === pie.cssPrefix + "arc") {
+                segment = currentEl.select("path");
+            } else {
+                index = currentEl.attr("data-index");
+                segment = d3.select("#" + pie.cssPrefix + "segment" + index);
+            }
+
+            if (pie.options.effects.highlightSegmentOnMouseover) {
+                index = segment.attr("data-index");
+                var segColor = pie.options.colors[index];
+                segment.style("fill", helpers.getColorShade(segColor, pie.options.effects.highlightLuminosity));
+            }
+
+            if (pie.options.tooltips.enabled) {
+                index = segment.attr("data-index");
+                tt.showTooltip(pie, index);
+            }
+
+            var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded";
+            segments.onSegmentEvent(pie, pie.options.callbacks.onMouseoverSegment, segment, isExpanded);
+        });
+
+        arc.on("mousemove", function() {
+            tt.moveTooltip(pie);
+        });
+
+        arc.on("mouseout", function() {
+            var currentEl = d3.select(this);
+            var segment, index;
+
+            if (currentEl.attr("class") === pie.cssPrefix + "arc") {
+                segment = currentEl.select("path");
+            } else {
+                index = currentEl.attr("data-index");
+                segment = d3.select("#" + pie.cssPrefix + "segment" + index);
+            }
+
+            if (pie.options.effects.highlightSegmentOnMouseover) {
+                index = segment.attr("data-index");
+                var color = pie.options.colors[index];
+                if (pie.options.misc.gradient.enabled) {
+                    color = "url(#" + pie.cssPrefix + "grad" + index + ")";
+                }
+                segment.style("fill", color);
+            }
+
+            if (pie.options.tooltips.enabled) {
+                index = segment.attr("data-index");
+                tt.hideTooltip(pie, index);
+            }
+
+            var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded";
+            segments.onSegmentEvent(pie, pie.options.callbacks.onMouseoutSegment, segment, isExpanded);
+        });
+    },
+
+    // helper function used to call the click, mouseover, mouseout segment callback functions
+    onSegmentEvent: function(pie, func, segment, isExpanded) {
+        if (!helpers.isFunction(func)) {
+            return;
+        }
+        var index = parseInt(segment.attr("data-index"), 10);
+        func({
+            segment: segment.node(),
+            index: index,
+            expanded: isExpanded,
+            data: pie.options.data.content[index]
+        });
+    },
+
+    openSegment: function(pie, segment) {
+        if (pie.isOpeningSegment) {
+            return;
+        }
+        pie.isOpeningSegment = true;
+
+        segments.maybeCloseOpenSegment(pie);
+
+        d3.select(segment)
+            .transition()
+            .ease(segments.effectMap[pie.options.effects.pullOutSegmentOnClick.effect])
+            .duration(pie.options.effects.pullOutSegmentOnClick.speed)
+            .attr("transform", function(d, i) {
+                var c = pie.arc.centroid(d),
+                    x = c[0],
+                    y = c[1],
+                    h = Math.sqrt(x*x + y*y),
+                    pullOutSize = parseInt(pie.options.effects.pullOutSegmentOnClick.size, 10);
+
+                return "translate(" + ((x/h) * pullOutSize) + ',' + ((y/h) * pullOutSize) + ")";
+            })
+            .on("end", function(d, i) {
+                pie.currentlyOpenSegment = segment;
+                pie.isOpeningSegment = false;
+                d3.select(segment).attr("class", pie.cssPrefix + "expanded");
+            });
+    },
+
+    maybeCloseOpenSegment: function(pie) {
+        if (typeof pie !== 'undefined' && pie.svg.selectAll("." + pie.cssPrefix + "expanded").size() > 0) {
+            segments.closeSegment(pie, pie.svg.select("." + pie.cssPrefix + "expanded").node());
+        }
+    },
+
+    closeSegment: function(pie, segment) {
+        d3.select(segment)
+            .transition()
+            .duration(400)
+            .attr("transform", "translate(0,0)")
+            .on("end", function(d, i) {
+                d3.select(segment).attr("class", "");
+                pie.currentlyOpenSegment = null;
+            });
+    },
+
+    getCentroid: function(el) {
+        var bbox = el.getBBox();
+        return {
+            x: bbox.x + bbox.width / 2,
+            y: bbox.y + bbox.height / 2
+        };
+    },
+
+    /**
+     * General helper function to return a segment's angle, in various different ways.
+     * @param index
+     * @param opts optional object for fine-tuning exactly what you want.
+     */
+    getSegmentAngle: function(index, data, totalSize, opts) {
+        var options = extend({
+            // if true, this returns the full angle from the origin. Otherwise it returns the single segment angle
+            compounded: true,
+
+            // optionally returns the midpoint of the angle instead of the full angle
+            midpoint: false
+        }, opts);
+
+        var currValue = data[index].value;
+        var fullValue;
+        if (options.compounded) {
+            fullValue = 0;
+
+            // get all values up to and including the specified index
+            for (var i=0; i<=index; i++) {
+                fullValue += data[i].value;
+            }
+        }
+
+        if (typeof fullValue === 'undefined') {
+            fullValue = currValue;
+        }
+
+        // now convert the full value to an angle
+        var angle = (fullValue / totalSize) * 360;
+
+        // lastly, if we want the midpoint, factor that sucker in
+        if (options.midpoint) {
+            var currAngle = (currValue / totalSize) * 360;
+            angle -= (currAngle / 2);
+        }
+
+        return angle;
+    }
+
+};
+
+    //// --------- text.js -----------
+var text = {
+    offscreenCoord: -10000,
+
+    addTitle: function(pie) {
+        pie.__title = pie.svg.selectAll("." + pie.cssPrefix + "title")
+            .data([pie.options.header.title])
+            .enter()
+            .append("text")
+            .text(function(d) { return d.text; })
+            .attr("id", pie.cssPrefix + "title")
+            .attr("class", pie.cssPrefix + "title")
+            .attr("x", text.offscreenCoord)
+            .attr("y", text.offscreenCoord)
+            .attr("text-anchor", function() {
+                var location;
+                if (pie.options.header.location === "top-center" || pie.options.header.location === "pie-center") {
+                    location = "middle";
+                } else {
+                    location = "left";
+                }
+                return location;
+            })
+            .attr("fill", function(d) { return d.color; })
+            .style("font-size", function(d) { return d.fontSize + "px"; })
+            .style("font-weight", function(d) { return d.fontWeight; })
+            .style("font-family", function(d) { return d.font; });
+    },
+
+    positionTitle: function(pie) {
+        var textComponents = pie.textComponents;
+        var headerLocation = pie.options.header.location;
+        var canvasPadding = pie.options.misc.canvasPadding;
+        var canvasWidth = pie.options.size.canvasWidth;
+        var titleSubtitlePadding = pie.options.header.titleSubtitlePadding;
+
+        var x;
+        if (headerLocation === "top-left") {
+            x = canvasPadding.left;
+        } else {
+            x = ((canvasWidth - canvasPadding.right) / 2) + canvasPadding.left;
+        }
+
+        // add whatever offset has been added by user
+        x += pie.options.misc.pieCenterOffset.x;
+
+        var y = canvasPadding.top + textComponents.title.h;
+
+        if (headerLocation === "pie-center") {
+            y = pie.pieCenter.y;
+
+            // still not fully correct
+            if (textComponents.subtitle.exists) {
+                var totalTitleHeight = textComponents.title.h + titleSubtitlePadding + textComponents.subtitle.h;
+                y = y - (totalTitleHeight / 2) + textComponents.title.h;
+            } else {
+                y += (textComponents.title.h / 4);
+            }
+        }
+
+        pie.__title
+            .attr("x", x)
+            .attr("y", y);
+    },
+
+    addSubtitle: function(pie) {
+        var headerLocation = pie.options.header.location;
+
+        pie.__subtitle = pie.svg.selectAll("." + pie.cssPrefix + "subtitle")
+            .data([pie.options.header.subtitle])
+            .enter()
+            .append("text")
+            .text(function(d) { return d.text; })
+            .attr("x", text.offscreenCoord)
+            .attr("y", text.offscreenCoord)
+            .attr("id", pie.cssPrefix + "subtitle")
+            .attr("class", pie.cssPrefix + "subtitle")
+            .attr("text-anchor", function() {
+                var location;
+                if (headerLocation === "top-center" || headerLocation === "pie-center") {
+                    location = "middle";
+                } else {
+                    location = "left";
+                }
+                return location;
+            })
+            .attr("fill", function(d) { return d.color; })
+            .style("font-size", function(d) { return d.fontSize + "px"; })
+            .style("font-weight", function(d) { return d.fontWeight; })
+            .style("font-family", function(d) { return d.font; });
+    },
+
+    positionSubtitle: function(pie) {
+        var canvasPadding = pie.options.misc.canvasPadding;
+        var canvasWidth = pie.options.size.canvasWidth;
+
+        var x;
+        if (pie.options.header.location === "top-left") {
+            x = canvasPadding.left;
+        } else {
+            x = ((canvasWidth - canvasPadding.right) / 2) + canvasPadding.left;
+        }
+
+        // add whatever offset has been added by user
+        x += pie.options.misc.pieCenterOffset.x;
+
+        var y = text.getHeaderHeight(pie);
+
+        pie.__subtitle
+            .attr("x", x)
+            .attr("y", y);
+    },
+
+    addFooter: function(pie) {
+        pie.__footer = pie.svg.selectAll("." + pie.cssPrefix + "footer")
+            .data([pie.options.footer])
+            .enter()
+            .append("text")
+            .text(function(d) { return d.text; })
+            .attr("x", text.offscreenCoord)
+            .attr("y", text.offscreenCoord)
+            .attr("id", pie.cssPrefix + "footer")
+            .attr("class", pie.cssPrefix + "footer")
+            .attr("text-anchor", function() {
+                var location = "left";
+                if (pie.options.footer.location === "bottom-center") {
+                    location = "middle";
+                } else if (pie.options.footer.location === "bottom-right") {
+                    location = "left"; // on purpose. We have to change the x-coord to make it properly right-aligned
+                }
+                return location;
+            })
+            .attr("fill", function(d) { return d.color; })
+            .style("font-size", function(d) { return d.fontSize + "px"; })
+            .style("font-weight", function(d) { return d.fontWeight; })
+            .style("font-family", function(d) { return d.font; });
+    },
+
+    positionFooter: function(pie) {
+        var footerLocation = pie.options.footer.location;
+        var footerWidth = pie.textComponents.footer.w;
+        var canvasWidth = pie.options.size.canvasWidth;
+        var canvasHeight = pie.options.size.canvasHeight;
+        var canvasPadding = pie.options.misc.canvasPadding;
+
+        var x;
+        if (footerLocation === "bottom-left") {
+            x = canvasPadding.left;
+        } else if (footerLocation === "bottom-right") {
+            x = canvasWidth - footerWidth - canvasPadding.right;
+        } else {
+            x = canvasWidth / 2; // TODO - shouldn't this also take into account padding?
+        }
+
+        pie.__footer
+            .attr("x", x)
+            .attr("y", canvasHeight - canvasPadding.bottom);
+    },
+
+    getHeaderHeight: function(pie) {
+        var h;
+        if (pie.textComponents.title.exists) {
+
+            // if the subtitle isn't defined, it'll be set to 0
+            var totalTitleHeight = pie.textComponents.title.h + pie.options.header.titleSubtitlePadding + pie.textComponents.subtitle.h;
+            if (pie.options.header.location === "pie-center") {
+                h = pie.pieCenter.y - (totalTitleHeight / 2) + totalTitleHeight;
+            } else {
+                h = totalTitleHeight + pie.options.misc.canvasPadding.top;
+            }
+        } else {
+            if (pie.options.header.location === "pie-center") {
+                var footerPlusPadding = pie.options.misc.canvasPadding.bottom + pie.textComponents.footer.h;
+                h = ((pie.options.size.canvasHeight - footerPlusPadding) / 2) + pie.options.misc.canvasPadding.top + (pie.textComponents.subtitle.h / 2);
+            } else {
+                h = pie.options.misc.canvasPadding.top + pie.textComponents.subtitle.h;
+            }
+        }
+        return h;
+    }
+};
+
+    //// --------- validate.js -----------
+var tt = {
+    addTooltips: function(pie) {
+
+    // group the label groups (label, percentage, value) into a single element for simpler positioning
+    var tooltips = pie.svg.insert("g")
+        .attr("class", pie.cssPrefix + "tooltips");
+
+    tooltips.selectAll("." + pie.cssPrefix + "tooltip")
+        .data(pie.options.data.content)
+        .enter()
+        .append("g")
+        .attr("class", pie.cssPrefix + "tooltip")
+        .attr("id", function(d, i) { return pie.cssPrefix + "tooltip" + i; })
+        .style("opacity", 0)
+        .append("rect")
+        .attr("rx", pie.options.tooltips.styles.borderRadius)
+        .attr("ry", pie.options.tooltips.styles.borderRadius)
+        .attr("x", -pie.options.tooltips.styles.padding)
+        .attr("opacity", pie.options.tooltips.styles.backgroundOpacity)
+        .style("fill", pie.options.tooltips.styles.backgroundColor);
+
+    tooltips.selectAll("." + pie.cssPrefix + "tooltip")
+        .data(pie.options.data.content)
+        .append("text")
+        .attr("fill", function(d) { return pie.options.tooltips.styles.color; })
+        .style("font-size", function(d) { return pie.options.tooltips.styles.fontSize; })
+        .style("font-weight", function(d) { return pie.options.tooltips.styles.fontWeight; })
+        .style("font-family", function(d) { return pie.options.tooltips.styles.font; })
+        .text(function(d, i) {
+            var caption = pie.options.tooltips.string;
+            if (pie.options.tooltips.type === "caption") {
+                caption = d.caption;
+            }
+            return tt.replacePlaceholders(pie, caption, i, {
+                label: d.label,
+                value: d.value,
+                percentage: d.percentage
+            });
+        });
+
+        tooltips.selectAll("." + pie.cssPrefix + "tooltip rect")
+            .attr("width", function (d, i) {
+                var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i);
+                return dims.w + (2 * pie.options.tooltips.styles.padding);
+            })
+            .attr("height", function (d, i) {
+                var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i);
+                return dims.h + (2 * pie.options.tooltips.styles.padding);
+            })
+            .attr("y", function (d, i) {
+                var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i);
+                return -(dims.h / 2) + 1;
+            });
+    },
+
+    showTooltip: function(pie, index) {
+        var fadeInSpeed = pie.options.tooltips.styles.fadeInSpeed;
+        if (tt.currentTooltip === index) {
+            fadeInSpeed = 1;
+        }
+
+        tt.currentTooltip = index;
+        d3.select("#" + pie.cssPrefix + "tooltip" + index)
+            .transition()
+            .duration(fadeInSpeed)
+            .style("opacity", function() { return 1; });
+
+        tt.moveTooltip(pie);
+    },
+
+    moveTooltip: function(pie) {
+        d3.selectAll("#" + pie.cssPrefix + "tooltip" + tt.currentTooltip)
+            .attr("transform", function(d) {
+                var mouseCoords = d3.mouse(this.parentNode);
+                var x = mouseCoords[0] + pie.options.tooltips.styles.padding + 2;
+                var y = mouseCoords[1] - (2 * pie.options.tooltips.styles.padding) - 2;
+                    return "translate(" + x + "," + y + ")";
+                });
+    },
+
+    hideTooltip: function(pie, index) {
+        d3.select("#" + pie.cssPrefix + "tooltip" + index)
+            .style("opacity", function() { return 0; });
+
+        // move the tooltip offscreen. This ensures that when the user next mouseovers the segment the hidden
+        // element won't interfere
+        d3.select("#" + pie.cssPrefix + "tooltip" + tt.currentTooltip)
+            .attr("transform", function(d, i) {
+                // klutzy, but it accounts for tooltip padding which could push it onscreen
+                var x = pie.options.size.canvasWidth + 1000;
+                var y = pie.options.size.canvasHeight + 1000;
+                return "translate(" + x + "," + y + ")";
+            });
+    },
+
+    replacePlaceholders: function(pie, str, index, replacements) {
+
+        // if the user has defined a placeholderParser function, call it before doing the replacements
+        if (helpers.isFunction(pie.options.tooltips.placeholderParser)) {
+            pie.options.tooltips.placeholderParser(index, replacements);
+        }
+
+        var replacer = function()  {
+            return function(match) {
+                var placeholder = arguments[1];
+                if (replacements.hasOwnProperty(placeholder)) {
+                    return replacements[arguments[1]];
+                } else {
+                    return arguments[0];
+                }
+            };
+        };
+        return str.replace(/\{(\w+)\}/g, replacer(replacements));
+    }
+};
+
+
+    // --------------------------------------------------------------------------------------------
+
+    // our constructor
+    var d3pie = function(element, options) {
+
+        // element can be an ID or DOM element
+        this.element = element;
+        if (typeof element === "string") {
+            var el = element.replace(/^#/, ""); // replace any jQuery-like ID hash char
+            this.element = document.getElementById(el);
+        }
+
+        var opts = {};
+        extend(true, opts, defaultSettings, options);
+        this.options = opts;
+
+        // if the user specified a custom CSS element prefix (ID, class), use it
+        if (this.options.misc.cssPrefix !== null) {
+            this.cssPrefix = this.options.misc.cssPrefix;
+        } else {
+            this.cssPrefix = "p" + _uniqueIDCounter + "_";
+            _uniqueIDCounter++;
+        }
+
+
+        // now run some validation on the user-defined info
+        if (!validate.initialCheck(this)) {
+            return;
+        }
+
+        // add a data-role to the DOM node to let anyone know that it contains a d3pie instance, and the d3pie version
+        d3.select(this.element).attr(_scriptName, _version);
+
+        // things that are done once
+        _setupData.call(this);
+        _init.call(this);
+    };
+
+    d3pie.prototype.recreate = function() {
+        // now run some validation on the user-defined info
+        if (!validate.initialCheck(this)) {
+            return;
+        }
+
+        _setupData.call(this);
+        _init.call(this);
+    };
+
+    d3pie.prototype.redraw = function() {
+        this.element.innerHTML = "";
+        _init.call(this);
+    };
+
+    d3pie.prototype.destroy = function() {
+        this.element.innerHTML = ""; // clear out the SVG
+        d3.select(this.element).attr(_scriptName, null); // remove the data attr
+    };
+
+    /**
+     * Returns all pertinent info about the current open info. Returns null if nothing's open, or if one is, an object of
+     * the following form:
+     * 	{
+     * 	  element: DOM NODE,
+     * 	  index: N,
+     * 	  data: {}
+     * 	}
+     */
+    d3pie.prototype.getOpenSegment = function() {
+        var segment = this.currentlyOpenSegment;
+        if (segment !== null && typeof segment !== "undefined") {
+            var index = parseInt(d3.select(segment).attr("data-index"), 10);
+            return {
+                element: segment,
+                index: index,
+                data: this.options.data.content[index]
+            };
+        } else {
+            return null;
+        }
+    };
+
+    d3pie.prototype.openSegment = function(index) {
+        index = parseInt(index, 10);
+        if (index < 0 || index > this.options.data.content.length-1) {
+            return;
+        }
+        segments.openSegment(this, d3.select("#" + this.cssPrefix + "segment" + index).node());
+    };
+
+    d3pie.prototype.closeSegment = function() {
+        segments.maybeCloseOpenSegment(this);
+    };
+
+    // this let's the user dynamically update aspects of the pie chart without causing a complete redraw. It
+    // intelligently re-renders only the part of the pie that the user specifies. Some things cause a repaint, others
+    // just redraw the single element
+    d3pie.prototype.updateProp = function(propKey, value) {
+        switch (propKey) {
+            case "header.title.text":
+                var oldVal = helpers.processObj(this.options, propKey);
+                helpers.processObj(this.options, propKey, value);
+                d3.select("#" + this.cssPrefix + "title").html(value);
+                if ((oldVal === "" && value !== "") || (oldVal !== "" && value === "")) {
+                    this.redraw();
+                }
+                break;
+
+            case "header.subtitle.text":
+                var oldValue = helpers.processObj(this.options, propKey);
+                helpers.processObj(this.options, propKey, value);
+                d3.select("#" + this.cssPrefix + "subtitle").html(value);
+                if ((oldValue === "" && value !== "") || (oldValue !== "" && value === "")) {
+                    this.redraw();
+                }
+                break;
+
+            case "callbacks.onload":
+            case "callbacks.onMouseoverSegment":
+            case "callbacks.onMouseoutSegment":
+            case "callbacks.onClickSegment":
+            case "effects.pullOutSegmentOnClick.effect":
+            case "effects.pullOutSegmentOnClick.speed":
+            case "effects.pullOutSegmentOnClick.size":
+            case "effects.highlightSegmentOnMouseover":
+            case "effects.highlightLuminosity":
+                helpers.processObj(this.options, propKey, value);
+                break;
+
+            // everything else, attempt to update it & do a repaint
+            default:
+                helpers.processObj(this.options, propKey, value);
+
+                this.destroy();
+                this.recreate();
+                break;
+        }
+    };
+
+
+    // ------------------------------------------------------------------------------------------------
+
+    var _setupData = function () {
+        this.options.data.content = math.sortPieData(this);
+        if (this.options.data.smallSegmentGrouping.enabled) {
+            this.options.data.content = helpers.applySmallSegmentGrouping(this.options.data.content, this.options.data.smallSegmentGrouping);
+        }
+
+
+        this.options.colors = helpers.initSegmentColors(this);
+        this.totalSize      = math.getTotalPieSize(this.options.data.content);
+
+        var dp = this.options.labels.percentage.decimalPlaces;
+
+        // add in percentage data to content
+        for (var i=0; i<this.options.data.content.length; i++) {
+            this.options.data.content[i].percentage = _getPercentage(this.options.data.content[i].value, this.totalSize, dp);
+        }
+
+        // adjust the final item to ensure the percentage always adds up to precisely 100%. This is necessary
+        var totalPercentage = 0;
+        for (var j=0; j<this.options.data.content.length; j++) {
+            if (j === this.options.data.content.length - 1) {
+                this.options.data.content[j].percentage = (100 - totalPercentage).toFixed(dp);
+            }
+            totalPercentage += parseFloat(this.options.data.content[j].percentage);
+        }
+    };
+
+    var _init = function() {
+
+        // prep-work
+        this.svg = helpers.addSVGSpace(this);
+
+        // store info about the main text components as part of the d3pie object instance
+        this.textComponents = {
+            headerHeight: 0,
+            title: {
+                exists: this.options.header.title.text !== "",
+                h: 0,
+                w: 0
+            },
+            subtitle: {
+                exists: this.options.header.subtitle.text !== "",
+                h: 0,
+                w: 0
+            },
+            footer: {
+                exists: this.options.footer.text !== "",
+                h: 0,
+                w: 0
+            }
+        };
+
+        this.outerLabelGroupData = [];
+
+        // add the key text components offscreen (title, subtitle, footer). We need to know their widths/heights for later computation
+        if (this.textComponents.title.exists) text.addTitle(this);
+        if (this.textComponents.subtitle.exists) text.addSubtitle(this);
+        text.addFooter(this);
+
+        // console.log(this);
+
+        // the footer never moves. Put it in place now
+        var self = this;
+        text.positionFooter(self);
+        var d3 = helpers.getDimensions(self.__footer.node());
+        self.textComponents.footer.h = d3.h;
+        self.textComponents.footer.w = d3.w;
+
+        if (self.textComponents.title.exists) {
+            var d1 = helpers.getDimensions(self.__title.node());
+            self.textComponents.title.h = d1.h;
+            self.textComponents.title.w = d1.w;
+        }
+
+        if (self.textComponents.subtitle.exists) {
+            var d2 = helpers.getDimensions(self.__subtitle.node());
+            self.textComponents.subtitle.h = d2.h;
+            self.textComponents.subtitle.w = d2.w;
+        }
+
+        // now compute the full header height
+        if (self.textComponents.title.exists || self.textComponents.subtitle.exists) {
+            var headerHeight = 0;
+            if (self.textComponents.title.exists) {
+                headerHeight += self.textComponents.title.h;
+                if (self.textComponents.subtitle.exists) {
+                    headerHeight += self.options.header.titleSubtitlePadding;
+                }
+            }
+            if (self.textComponents.subtitle.exists) {
+                headerHeight += self.textComponents.subtitle.h;
+            }
+            self.textComponents.headerHeight = headerHeight;
+        }
+
+        // at this point, all main text component dimensions have been calculated
+        math.computePieRadius(self);
+
+        // this value is used all over the place for placing things and calculating locations. We figure it out ONCE
+        // and store it as part of the object
+        math.calculatePieCenter(self);
+
+        // position the title and subtitle
+        text.positionTitle(self);
+        text.positionSubtitle(self);
+
+        // now create the pie chart segments, and gradients if the user desired
+        if (self.options.misc.gradient.enabled) {
+            segments.addGradients(self);
+        }
+        segments.create(self); // also creates this.arc
+
+        self.__labels = {};
+        labels.add(self, "inner", self.options.labels.inner.format);
+        labels.add(self, "outer", self.options.labels.outer.format);
+
+        // position the label elements relatively within their individual group (label, percentage, value)
+        labels.positionLabelElements(self, "inner", self.options.labels.inner.format);
+        labels.positionLabelElements(self, "outer", self.options.labels.outer.format);
+        labels.computeOuterLabelCoords(self);
+
+        // this is (and should be) dumb. It just places the outer groups at their calculated, collision-free positions
+        labels.positionLabelGroups(self, "outer");
+
+        // we use the label line positions for many other calculations, so ALWAYS compute them
+        labels.computeLabelLinePositions(self);
+
+        // only add them if they're actually enabled
+        if (self.options.labels.lines.enabled && self.options.labels.outer.format !== "none") {
+            labels.addLabelLines(self);
+        }
+
+        labels.positionLabelGroups(self, "inner");
+
+        if (helpers.isFunction(self.options.callbacks.onload)) {
+            try {
+                self.options.callbacks.onload();
+            } catch (e) { }
+        }
+
+        // add and position the tooltips
+        if (self.options.tooltips.enabled) {
+            tt.addTooltips(self);
+        }
+
+        segments.addSegmentEventHandlers(self);
+    };
+
+    var _getPercentage = function(value, total, decimalPlaces) {
+        var relativeAmount = value / total;
+        if (decimalPlaces <= 0) {
+            return Math.round(relativeAmount * 100);
+        } else {
+            return (relativeAmount * 100).toFixed(decimalPlaces);
+        }
+    };
+
+    return d3pie;
+}));