/*!
* svg.js - A lightweight library for manipulating and animating SVG.
* @version 2.6.6
* https://svgdotjs.github.io/
*
* @copyright Wout Fierens <wout@mick-wout.com>
* @license MIT
*
* BUILT: Thu Aug 30 2018 11:37:58 GMT+0200 (GMT+02:00)
*/;
(function (root, factory) {
  /* istanbul ignore next */
  if (typeof define === 'function' && define.amd) {
    define(function () {
      return factory(root, root.document)
    })
    /* below check fixes #412 */
  } else if (typeof exports === 'object' && typeof module !== 'undefined') {
    module.exports = root.document ? factory(root, root.document) : function (w) { return factory(w, w.document) }
  } else {
    root.SVG = factory(root, root.document)
  }
}(typeof window !== 'undefined' ? window : this, function (window, document) {
// Find global reference - uses 'this' by default when available,
// falls back to 'window' otherwise (for bundlers like Webpack)
  var globalRef = (typeof this !== 'undefined') ? this : window

  // The main wrapping element
  var SVG = globalRef.SVG = function (element) {
    if (SVG.supported) {
      element = new SVG.Doc(element)

      if (!SVG.parser.draw) { SVG.prepare() }

      return element
    }
  }

  // Default namespaces
  SVG.ns = 'http://www.w3.org/2000/svg'
  SVG.xmlns = 'http://www.w3.org/2000/xmlns/'
  SVG.xlink = 'http://www.w3.org/1999/xlink'
  SVG.svgjs = 'http://svgjs.com/svgjs'

  // Svg support test
  SVG.supported = (function () {
    return true
  // !!document.createElementNS &&
  //     !! document.createElementNS(SVG.ns,'svg').createSVGRect
  })()

  // Don't bother to continue if SVG is not supported
  if (!SVG.supported) return false

  // Element id sequence
  SVG.did = 1000

  // Get next named element id
  SVG.eid = function (name) {
    return 'Svgjs' + capitalize(name) + (SVG.did++)
  }

  // Method for element creation
  SVG.create = function (name) {
  // create element
    var element = document.createElementNS(this.ns, name)

    // apply unique id
    element.setAttribute('id', this.eid(name))

    return element
  }

  // Method for extending objects
  SVG.extend = function () {
    var modules, methods, key, i

    // Get list of modules
    modules = [].slice.call(arguments)

    // Get object with extensions
    methods = modules.pop()

    for (i = modules.length - 1; i >= 0; i--) {
      if (modules[i]) {
        for (key in methods) { modules[i].prototype[key] = methods[key] }
      }
    }

    // Make sure SVG.Set inherits any newly added methods
    if (SVG.Set && SVG.Set.inherit) { SVG.Set.inherit() }
  }

  // Invent new element
  SVG.invent = function (config) {
  // Create element initializer
    var initializer = typeof config.create === 'function'
      ? config.create
      : function () {
        this.constructor.call(this, SVG.create(config.create))
      }

    // Inherit prototype
    if (config.inherit) { initializer.prototype = new config.inherit() }

    // Extend with methods
    if (config.extend) { SVG.extend(initializer, config.extend) }

    // Attach construct method to parent
    if (config.construct) { SVG.extend(config.parent || SVG.Container, config.construct) }

    return initializer
  }

  // Adopt existing svg elements
  SVG.adopt = function (node) {
  // check for presence of node
    if (!node) return null

    // make sure a node isn't already adopted
    if (node.instance) return node.instance

    // initialize variables
    var element

    // adopt with element-specific settings
    if (node.nodeName == 'svg') { element = node.parentNode instanceof window.SVGElement ? new SVG.Nested() : new SVG.Doc() } else if (node.nodeName == 'linearGradient') { element = new SVG.Gradient('linear') } else if (node.nodeName == 'radialGradient') { element = new SVG.Gradient('radial') } else if (SVG[capitalize(node.nodeName)]) { element = new SVG[capitalize(node.nodeName)]() } else { element = new SVG.Element(node) }

    // ensure references
    element.type = node.nodeName
    element.node = node
    node.instance = element

    // SVG.Class specific preparations
    if (element instanceof SVG.Doc) { element.namespace().defs() }

    // pull svgjs data from the dom (getAttributeNS doesn't work in html5)
    element.setData(JSON.parse(node.getAttribute('svgjs:data')) || {})

    return element
  }

  // Initialize parsing element
  SVG.prepare = function () {
  // Select document body and create invisible svg element
    var body = document.getElementsByTagName('body')[0],
      draw = (body ? new SVG.Doc(body) : SVG.adopt(document.documentElement).nested()).size(2, 0)

    // Create parser object
    SVG.parser = {
      body: body || document.documentElement,
      draw: draw.style('opacity:0;position:absolute;left:-100%;top:-100%;overflow:hidden').node,
      poly: draw.polyline().node,
      path: draw.path().node,
      native: SVG.create('svg')
    }
  }

  SVG.parser = {
    native: SVG.create('svg')
  }

  document.addEventListener('DOMContentLoaded', function () {
    if (!SVG.parser.draw) { SVG.prepare() }
  }, false)

  // Storage for regular expressions
  SVG.regex = {
  // Parse unit value
    numberAndUnit: /^([+-]?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?)([a-z%]*)$/i,

    // Parse hex value
    hex: /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i,

    // Parse rgb value
    rgb: /rgb\((\d+),(\d+),(\d+)\)/,

    // Parse reference id
    reference: /#([a-z0-9\-_]+)/i,

    // splits a transformation chain
    transforms: /\)\s*,?\s*/,

    // Whitespace
    whitespace: /\s/g,

    // Test hex value
    isHex: /^#[a-f0-9]{3,6}$/i,

    // Test rgb value
    isRgb: /^rgb\(/,

    // Test css declaration
    isCss: /[^:]+:[^;]+;?/,

    // Test for blank string
    isBlank: /^(\s+)?$/,

    // Test for numeric string
    isNumber: /^[+-]?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i,

    // Test for percent value
    isPercent: /^-?[\d\.]+%$/,

    // Test for image url
    isImage: /\.(jpg|jpeg|png|gif|svg)(\?[^=]+.*)?/i,

    // split at whitespace and comma
    delimiter: /[\s,]+/,

    // The following regex are used to parse the d attribute of a path

    // Matches all hyphens which are not after an exponent
    hyphen: /([^e])\-/gi,

    // Replaces and tests for all path letters
    pathLetters: /[MLHVCSQTAZ]/gi,

    // yes we need this one, too
    isPathLetter: /[MLHVCSQTAZ]/i,

    // matches 0.154.23.45
    numbersWithDots: /((\d?\.\d+(?:e[+-]?\d+)?)((?:\.\d+(?:e[+-]?\d+)?)+))+/gi,

    // matches .
    dots: /\./g
  }

  SVG.utils = {
  // Map function
    map: function (array, block) {
      var i,
        il = array.length,
        result = []

      for (i = 0; i < il; i++) { result.push(block(array[i])) }

      return result
    },

    // Filter function
    filter: function (array, block) {
      var i,
        il = array.length,
        result = []

      for (i = 0; i < il; i++) {
        if (block(array[i])) { result.push(array[i]) }
      }

      return result
    },

    // Degrees to radians
    radians: function (d) {
      return d % 360 * Math.PI / 180
    },

    // Radians to degrees
    degrees: function (r) {
      return r * 180 / Math.PI % 360
    },

    filterSVGElements: function (nodes) {
      return this.filter(nodes, function (el) { return el instanceof window.SVGElement })
    }

  }

  SVG.defaults = {
  // Default attribute values
    attrs: {
    // fill and stroke
      'fill-opacity': 1,
      'stroke-opacity': 1,
      'stroke-width': 0,
      'stroke-linejoin': 'miter',
      'stroke-linecap': 'butt',
      fill: '#000000',
      stroke: '#000000',
      opacity: 1,
      // position
      x: 0,
      y: 0,
      cx: 0,
      cy: 0,
      // size
      width: 0,
      height: 0,
      // radius
      r: 0,
      rx: 0,
      ry: 0,
      // gradient
      offset: 0,
      'stop-opacity': 1,
      'stop-color': '#000000',
      // text
      'font-size': 16,
      'font-family': 'Helvetica, Arial, sans-serif',
      'text-anchor': 'start'
    }

  }
  // Module for color convertions
  SVG.Color = function (color) {
    var match

    // initialize defaults
    this.r = 0
    this.g = 0
    this.b = 0

    if (!color) return

    // parse color
    if (typeof color === 'string') {
      if (SVG.regex.isRgb.test(color)) {
      // get rgb values
        match = SVG.regex.rgb.exec(color.replace(SVG.regex.whitespace, ''))

        // parse numeric values
        this.r = parseInt(match[1])
        this.g = parseInt(match[2])
        this.b = parseInt(match[3])
      } else if (SVG.regex.isHex.test(color)) {
      // get hex values
        match = SVG.regex.hex.exec(fullHex(color))

        // parse numeric values
        this.r = parseInt(match[1], 16)
        this.g = parseInt(match[2], 16)
        this.b = parseInt(match[3], 16)
      }
    } else if (typeof color === 'object') {
      this.r = color.r
      this.g = color.g
      this.b = color.b
    }
  }

  SVG.extend(SVG.Color, {
  // Default to hex conversion
    toString: function () {
      return this.toHex()
    },
    // Build hex value
    toHex: function () {
      return '#' +
      compToHex(this.r) +
      compToHex(this.g) +
      compToHex(this.b)
    },
    // Build rgb value
    toRgb: function () {
      return 'rgb(' + [this.r, this.g, this.b].join() + ')'
    },
    // Calculate true brightness
    brightness: function () {
      return (this.r / 255 * 0.30) +
         (this.g / 255 * 0.59) +
         (this.b / 255 * 0.11)
    },
    // Make color morphable
    morph: function (color) {
      this.destination = new SVG.Color(color)

      return this
    },
    // Get morphed color at given position
    at: function (pos) {
    // make sure a destination is defined
      if (!this.destination) return this

      // normalise pos
      pos = pos < 0 ? 0 : pos > 1 ? 1 : pos

      // generate morphed color
      return new SVG.Color({
        r: ~~(this.r + (this.destination.r - this.r) * pos),
        g: ~~(this.g + (this.destination.g - this.g) * pos),
        b: ~~(this.b + (this.destination.b - this.b) * pos)
      })
    }

  })

  // Testers

  // Test if given value is a color string
  SVG.Color.test = function (color) {
    color += ''
    return SVG.regex.isHex.test(color) ||
      SVG.regex.isRgb.test(color)
  }

  // Test if given value is a rgb object
  SVG.Color.isRgb = function (color) {
    return color && typeof color.r === 'number' &&
               typeof color.g === 'number' &&
               typeof color.b === 'number'
  }

  // Test if given value is a color
  SVG.Color.isColor = function (color) {
    return SVG.Color.isRgb(color) || SVG.Color.test(color)
  }
  // Module for array conversion
  SVG.Array = function (array, fallback) {
    array = (array || []).valueOf()

    // if array is empty and fallback is provided, use fallback
    if (array.length == 0 && fallback) { array = fallback.valueOf() }

    // parse array
    this.value = this.parse(array)
  }

  SVG.extend(SVG.Array, {
  // Make array morphable
    morph: function (array) {
      this.destination = this.parse(array)

      // normalize length of arrays
      if (this.value.length != this.destination.length) {
        var lastValue = this.value[this.value.length - 1],
          lastDestination = this.destination[this.destination.length - 1]

        while (this.value.length > this.destination.length) { this.destination.push(lastDestination) }
        while (this.value.length < this.destination.length) { this.value.push(lastValue) }
      }

      return this
    },
    // Clean up any duplicate points
    settle: function () {
    // find all unique values
      for (var i = 0, il = this.value.length, seen = []; i < il; i++) {
        if (seen.indexOf(this.value[i]) == -1) { seen.push(this.value[i]) }
      }

      // set new value
      return this.value = seen
    },
    // Get morphed array at given position
    at: function (pos) {
    // make sure a destination is defined
      if (!this.destination) return this

      // generate morphed array
      for (var i = 0, il = this.value.length, array = []; i < il; i++) { array.push(this.value[i] + (this.destination[i] - this.value[i]) * pos) }

      return new SVG.Array(array)
    },
    // Convert array to string
    toString: function () {
      return this.value.join(' ')
    },
    // Real value
    valueOf: function () {
      return this.value
    },
    // Parse whitespace separated string
    parse: function (array) {
      array = array.valueOf()

      // if already is an array, no need to parse it
      if (Array.isArray(array)) return array

      return this.split(array)
    },
    // Strip unnecessary whitespace
    split: function (string) {
      return string.trim().split(SVG.regex.delimiter).map(parseFloat)
    },
    // Reverse array
    reverse: function () {
      this.value.reverse()

      return this
    },
    clone: function () {
      var clone = new this.constructor()
      clone.value = array_clone(this.value)
      return clone
    }
  })
  // Poly points array
  SVG.PointArray = function (array, fallback) {
    SVG.Array.call(this, array, fallback || [[0, 0]])
  }

  // Inherit from SVG.Array
  SVG.PointArray.prototype = new SVG.Array()
  SVG.PointArray.prototype.constructor = SVG.PointArray

  SVG.extend(SVG.PointArray, {
  // Convert array to string
    toString: function () {
    // convert to a poly point string
      for (var i = 0, il = this.value.length, array = []; i < il; i++) { array.push(this.value[i].join(',')) }

      return array.join(' ')
    },
    // Convert array to line object
    toLine: function () {
      return {
        x1: this.value[0][0],
        y1: this.value[0][1],
        x2: this.value[1][0],
        y2: this.value[1][1]
      }
    },
    // Get morphed array at given position
    at: function (pos) {
    // make sure a destination is defined
      if (!this.destination) return this

      // generate morphed point string
      for (var i = 0, il = this.value.length, array = []; i < il; i++) {
        array.push([
          this.value[i][0] + (this.destination[i][0] - this.value[i][0]) * pos,
          this.value[i][1] + (this.destination[i][1] - this.value[i][1]) * pos
        ])
      }

      return new SVG.PointArray(array)
    },
    // Parse point string and flat array
    parse: function (array) {
      var points = []

      array = array.valueOf()

      // if it is an array
      if (Array.isArray(array)) {
      // and it is not flat, there is no need to parse it
        if (Array.isArray(array[0])) {
        // make sure to use a clone
          return array.map(function (el) { return el.slice() })
        } else if (array[0].x != null) {
        // allow point objects to be passed
          return array.map(function (el) { return [el.x, el.y] })
        }
      } else { // Else, it is considered as a string
      // parse points
        array = array.trim().split(SVG.regex.delimiter).map(parseFloat)
      }

      // validate points - https://svgwg.org/svg2-draft/shapes.html#DataTypePoints
      // Odd number of coordinates is an error. In such cases, drop the last odd coordinate.
      if (array.length % 2 !== 0) array.pop()

      // wrap points in two-tuples and parse points as floats
      for (var i = 0, len = array.length; i < len; i = i + 2) { points.push([ array[i], array[i + 1] ]) }

      return points
    },
    // Move point string
    move: function (x, y) {
      var box = this.bbox()

      // get relative offset
      x -= box.x
      y -= box.y

      // move every point
      if (!isNaN(x) && !isNaN(y)) {
        for (var i = this.value.length - 1; i >= 0; i--) { this.value[i] = [this.value[i][0] + x, this.value[i][1] + y] }
      }

      return this
    },
    // Resize poly string
    size: function (width, height) {
      var i, box = this.bbox()

      // recalculate position of all points according to new size
      for (i = this.value.length - 1; i >= 0; i--) {
        if (box.width) this.value[i][0] = ((this.value[i][0] - box.x) * width) / box.width + box.x
        if (box.height) this.value[i][1] = ((this.value[i][1] - box.y) * height) / box.height + box.y
      }

      return this
    },
    // Get bounding box of points
    bbox: function () {
      if (!SVG.parser.draw) { SVG.prepare() }
      SVG.parser.poly.setAttribute('points', this.toString())

      return SVG.parser.poly.getBBox()
    }
  })

  var pathHandlers = {
    M: function (c, p, p0) {
      p.x = p0.x = c[0]
      p.y = p0.y = c[1]

      return ['M', p.x, p.y]
    },
    L: function (c, p) {
      p.x = c[0]
      p.y = c[1]
      return ['L', c[0], c[1]]
    },
    H: function (c, p) {
      p.x = c[0]
      return ['H', c[0]]
    },
    V: function (c, p) {
      p.y = c[0]
      return ['V', c[0]]
    },
    C: function (c, p) {
      p.x = c[4]
      p.y = c[5]
      return ['C', c[0], c[1], c[2], c[3], c[4], c[5]]
    },
    S: function (c, p) {
      p.x = c[2]
      p.y = c[3]
      return ['S', c[0], c[1], c[2], c[3]]
    },
    Q: function (c, p) {
      p.x = c[2]
      p.y = c[3]
      return ['Q', c[0], c[1], c[2], c[3]]
    },
    T: function (c, p) {
      p.x = c[0]
      p.y = c[1]
      return ['T', c[0], c[1]]
    },
    Z: function (c, p, p0) {
      p.x = p0.x
      p.y = p0.y
      return ['Z']
    },
    A: function (c, p) {
      p.x = c[5]
      p.y = c[6]
      return ['A', c[0], c[1], c[2], c[3], c[4], c[5], c[6]]
    }
  }

  var mlhvqtcsa = 'mlhvqtcsaz'.split('')

  for (var i = 0, il = mlhvqtcsa.length; i < il; ++i) {
    pathHandlers[mlhvqtcsa[i]] = (function (i) {
      return function (c, p, p0) {
        if (i == 'H') c[0] = c[0] + p.x
        else if (i == 'V') c[0] = c[0] + p.y
        else if (i == 'A') {
          c[5] = c[5] + p.x,
          c[6] = c[6] + p.y
        } else {
          for (var j = 0, jl = c.length; j < jl; ++j) {
            c[j] = c[j] + (j % 2 ? p.y : p.x)
          }
        }

        return pathHandlers[i](c, p, p0)
      }
    })(mlhvqtcsa[i].toUpperCase())
  }

  // Path points array
  SVG.PathArray = function (array, fallback) {
    SVG.Array.call(this, array, fallback || [['M', 0, 0]])
  }

  // Inherit from SVG.Array
  SVG.PathArray.prototype = new SVG.Array()
  SVG.PathArray.prototype.constructor = SVG.PathArray

  SVG.extend(SVG.PathArray, {
  // Convert array to string
    toString: function () {
      return arrayToString(this.value)
    },
    // Move path string
    move: function (x, y) {
    // get bounding box of current situation
      var box = this.bbox()

      // get relative offset
      x -= box.x
      y -= box.y

      if (!isNaN(x) && !isNaN(y)) {
      // move every point
        for (var l, i = this.value.length - 1; i >= 0; i--) {
          l = this.value[i][0]

          if (l == 'M' || l == 'L' || l == 'T') {
            this.value[i][1] += x
            this.value[i][2] += y
          } else if (l == 'H') {
            this.value[i][1] += x
          } else if (l == 'V') {
            this.value[i][1] += y
          } else if (l == 'C' || l == 'S' || l == 'Q') {
            this.value[i][1] += x
            this.value[i][2] += y
            this.value[i][3] += x
            this.value[i][4] += y

            if (l == 'C') {
              this.value[i][5] += x
              this.value[i][6] += y
            }
          } else if (l == 'A') {
            this.value[i][6] += x
            this.value[i][7] += y
          }
        }
      }

      return this
    },
    // Resize path string
    size: function (width, height) {
    // get bounding box of current situation
      var i, l, box = this.bbox()

      // recalculate position of all points according to new size
      for (i = this.value.length - 1; i >= 0; i--) {
        l = this.value[i][0]

        if (l == 'M' || l == 'L' || l == 'T') {
          this.value[i][1] = ((this.value[i][1] - box.x) * width) / box.width + box.x
          this.value[i][2] = ((this.value[i][2] - box.y) * height) / box.height + box.y
        } else if (l == 'H') {
          this.value[i][1] = ((this.value[i][1] - box.x) * width) / box.width + box.x
        } else if (l == 'V') {
          this.value[i][1] = ((this.value[i][1] - box.y) * height) / box.height + box.y
        } else if (l == 'C' || l == 'S' || l == 'Q') {
          this.value[i][1] = ((this.value[i][1] - box.x) * width) / box.width + box.x
          this.value[i][2] = ((this.value[i][2] - box.y) * height) / box.height + box.y
          this.value[i][3] = ((this.value[i][3] - box.x) * width) / box.width + box.x
          this.value[i][4] = ((this.value[i][4] - box.y) * height) / box.height + box.y

          if (l == 'C') {
            this.value[i][5] = ((this.value[i][5] - box.x) * width) / box.width + box.x
            this.value[i][6] = ((this.value[i][6] - box.y) * height) / box.height + box.y
          }
        } else if (l == 'A') {
        // resize radii
          this.value[i][1] = (this.value[i][1] * width) / box.width
          this.value[i][2] = (this.value[i][2] * height) / box.height

          // move position values
          this.value[i][6] = ((this.value[i][6] - box.x) * width) / box.width + box.x
          this.value[i][7] = ((this.value[i][7] - box.y) * height) / box.height + box.y
        }
      }

      return this
    },
    // Test if the passed path array use the same path data commands as this path array
    equalCommands: function (pathArray) {
      var i, il, equalCommands

      pathArray = new SVG.PathArray(pathArray)

      equalCommands = this.value.length === pathArray.value.length
      for (i = 0, il = this.value.length; equalCommands && i < il; i++) {
        equalCommands = this.value[i][0] === pathArray.value[i][0]
      }

      return equalCommands
    },
    // Make path array morphable
    morph: function (pathArray) {
      pathArray = new SVG.PathArray(pathArray)

      if (this.equalCommands(pathArray)) {
        this.destination = pathArray
      } else {
        this.destination = null
      }

      return this
    },
    // Get morphed path array at given position
    at: function (pos) {
    // make sure a destination is defined
      if (!this.destination) return this

      var sourceArray = this.value,
        destinationArray = this.destination.value,
        array = [], pathArray = new SVG.PathArray(),
        i, il, j, jl

      // Animate has specified in the SVG spec
      // See: https://www.w3.org/TR/SVG11/paths.html#PathElement
      for (i = 0, il = sourceArray.length; i < il; i++) {
        array[i] = [sourceArray[i][0]]
        for (j = 1, jl = sourceArray[i].length; j < jl; j++) {
          array[i][j] = sourceArray[i][j] + (destinationArray[i][j] - sourceArray[i][j]) * pos
        }
        // For the two flags of the elliptical arc command, the SVG spec say:
        // Flags and booleans are interpolated as fractions between zero and one, with any non-zero value considered to be a value of one/true
        // Elliptical arc command as an array followed by corresponding indexes:
        // ['A', rx, ry, x-axis-rotation, large-arc-flag, sweep-flag, x, y]
        //   0    1   2        3                 4             5      6  7
        if (array[i][0] === 'A') {
          array[i][4] = +(array[i][4] != 0)
          array[i][5] = +(array[i][5] != 0)
        }
      }

      // Directly modify the value of a path array, this is done this way for performance
      pathArray.value = array
      return pathArray
    },
    // Absolutize and parse path to array
    parse: function (array) {
    // if it's already a patharray, no need to parse it
      if (array instanceof SVG.PathArray) return array.valueOf()

      // prepare for parsing
      var i, x0, y0, s, seg, arr,
        x = 0,
        y = 0,
        paramCnt = { 'M': 2, 'L': 2, 'H': 1, 'V': 1, 'C': 6, 'S': 4, 'Q': 4, 'T': 2, 'A': 7, 'Z': 0 }

      if (typeof array === 'string') {
        array = array
          .replace(SVG.regex.numbersWithDots, pathRegReplace) // convert 45.123.123 to 45.123 .123
          .replace(SVG.regex.pathLetters, ' $& ') // put some room between letters and numbers
          .replace(SVG.regex.hyphen, '$1 -') // add space before hyphen
          .trim() // trim
          .split(SVG.regex.delimiter) // split into array
      } else {
        array = array.reduce(function (prev, curr) {
          return [].concat.call(prev, curr)
        }, [])
      }

      // array now is an array containing all parts of a path e.g. ['M', '0', '0', 'L', '30', '30' ...]
      var arr = [],
        p = new SVG.Point(),
        p0 = new SVG.Point(),
        index = 0,
        len = array.length

      do {
      // Test if we have a path letter
        if (SVG.regex.isPathLetter.test(array[index])) {
          s = array[index]
          ++index
          // If last letter was a move command and we got no new, it defaults to [L]ine
        } else if (s == 'M') {
          s = 'L'
        } else if (s == 'm') {
          s = 'l'
        }

        arr.push(pathHandlers[s].call(null,
          array.slice(index, (index = index + paramCnt[s.toUpperCase()])).map(parseFloat),
          p, p0
        )
        )
      } while (len > index)

      return arr
    },
    // Get bounding box of path
    bbox: function () {
      if (!SVG.parser.draw) { SVG.prepare() }
      SVG.parser.path.setAttribute('d', this.toString())

      return SVG.parser.path.getBBox()
    }

  })

  // Module for unit convertions
  SVG.Number = SVG.invent({
  // Initialize
    create: function (value, unit) {
    // initialize defaults
      this.value = 0
      this.unit = unit || ''

      // parse value
      if (typeof value === 'number') {
      // ensure a valid numeric value
        this.value = isNaN(value) ? 0 : !isFinite(value) ? (value < 0 ? -3.4e+38 : +3.4e+38) : value
      } else if (typeof value === 'string') {
        unit = value.match(SVG.regex.numberAndUnit)

        if (unit) {
        // make value numeric
          this.value = parseFloat(unit[1])

          // normalize
          if (unit[5] == '%') { this.value /= 100 } else if (unit[5] == 's') { this.value *= 1000 }

          // store unit
          this.unit = unit[5]
        }
      } else {
        if (value instanceof SVG.Number) {
          this.value = value.valueOf()
          this.unit = value.unit
        }
      }
    },
    // Add methods
    extend: {
    // Stringalize
      toString: function () {
        return (
          this.unit == '%'
            ? ~~(this.value * 1e8) / 1e6
            : this.unit == 's'
              ? this.value / 1e3
              : this.value
        ) + this.unit
      },
      toJSON: function () {
        return this.toString()
      }, // Convert to primitive
      valueOf: function () {
        return this.value
      },
      // Add number
      plus: function (number) {
        number = new SVG.Number(number)
        return new SVG.Number(this + number, this.unit || number.unit)
      },
      // Subtract number
      minus: function (number) {
        number = new SVG.Number(number)
        return new SVG.Number(this - number, this.unit || number.unit)
      },
      // Multiply number
      times: function (number) {
        number = new SVG.Number(number)
        return new SVG.Number(this * number, this.unit || number.unit)
      },
      // Divide number
      divide: function (number) {
        number = new SVG.Number(number)
        return new SVG.Number(this / number, this.unit || number.unit)
      },
      // Convert to different unit
      to: function (unit) {
        var number = new SVG.Number(this)

        if (typeof unit === 'string') { number.unit = unit }

        return number
      },
      // Make number morphable
      morph: function (number) {
        this.destination = new SVG.Number(number)

        if (number.relative) {
          this.destination.value += this.value
        }

        return this
      },
      // Get morphed number at given position
      at: function (pos) {
      // Make sure a destination is defined
        if (!this.destination) return this

        // Generate new morphed number
        return new SVG.Number(this.destination)
          .minus(this)
          .times(pos)
          .plus(this)
      }

    }
  })

  SVG.Element = SVG.invent({
  // Initialize node
    create: function (node) {
    // make stroke value accessible dynamically
      this._stroke = SVG.defaults.attrs.stroke
      this._event = null

      // initialize data object
      this.dom = {}

      // create circular reference
      if (this.node = node) {
        this.type = node.nodeName
        this.node.instance = this

        // store current attribute value
        this._stroke = node.getAttribute('stroke') || this._stroke
      }
    },

    // Add class methods
    extend: {
    // Move over x-axis
      x: function (x) {
        return this.attr('x', x)
      },
      // Move over y-axis
      y: function (y) {
        return this.attr('y', y)
      },
      // Move by center over x-axis
      cx: function (x) {
        return x == null ? this.x() + this.width() / 2 : this.x(x - this.width() / 2)
      },
      // Move by center over y-axis
      cy: function (y) {
        return y == null ? this.y() + this.height() / 2 : this.y(y - this.height() / 2)
      },
      // Move element to given x and y values
      move: function (x, y) {
        return this.x(x).y(y)
      },
      // Move element by its center
      center: function (x, y) {
        return this.cx(x).cy(y)
      },
      // Set width of element
      width: function (width) {
        return this.attr('width', width)
      },
      // Set height of element
      height: function (height) {
        return this.attr('height', height)
      },
      // Set element size to given width and height
      size: function (width, height) {
        var p = proportionalSize(this, width, height)

        return this
          .width(new SVG.Number(p.width))
          .height(new SVG.Number(p.height))
      },
      // Clone element
      clone: function (parent) {
      // write dom data to the dom so the clone can pickup the data
        this.writeDataToDom()

        // clone element and assign new id
        var clone = assignNewId(this.node.cloneNode(true))

        // insert the clone in the given parent or after myself
        if (parent) parent.add(clone)
        else this.after(clone)

        return clone
      },
      // Remove element
      remove: function () {
        if (this.parent()) { this.parent().removeElement(this) }

        return this
      },
      // Replace element
      replace: function (element) {
        this.after(element).remove()

        return element
      },
      // Add element to given container and return self
      addTo: function (parent) {
        return parent.put(this)
      },
      // Add element to given container and return container
      putIn: function (parent) {
        return parent.add(this)
      },
      // Get / set id
      id: function (id) {
        return this.attr('id', id)
      },
      // Checks whether the given point inside the bounding box of the element
      inside: function (x, y) {
        var box = this.bbox()

        return x > box.x &&
          y > box.y &&
          x < box.x + box.width &&
          y < box.y + box.height
      },
      // Show element
      show: function () {
        return this.style('display', '')
      },
      // Hide element
      hide: function () {
        return this.style('display', 'none')
      },
      // Is element visible?
      visible: function () {
        return this.style('display') != 'none'
      },
      // Return id on string conversion
      toString: function () {
        return this.attr('id')
      },
      // Return array of classes on the node
      classes: function () {
        var attr = this.attr('class')

        return attr == null ? [] : attr.trim().split(SVG.regex.delimiter)
      },
      // Return true if class exists on the node, false otherwise
      hasClass: function (name) {
        return this.classes().indexOf(name) != -1
      },
      // Add class to the node
      addClass: function (name) {
        if (!this.hasClass(name)) {
          var array = this.classes()
          array.push(name)
          this.attr('class', array.join(' '))
        }

        return this
      },
      // Remove class from the node
      removeClass: function (name) {
        if (this.hasClass(name)) {
          this.attr('class', this.classes().filter(function (c) {
            return c != name
          }).join(' '))
        }

        return this
      },
      // Toggle the presence of a class on the node
      toggleClass: function (name) {
        return this.hasClass(name) ? this.removeClass(name) : this.addClass(name)
      },
      // Get referenced element form attribute value
      reference: function (attr) {
        return SVG.get(this.attr(attr))
      },
      // Returns the parent element instance
      parent: function (type) {
        var parent = this

        // check for parent
        if (!parent.node.parentNode) return null

        // get parent element
        parent = SVG.adopt(parent.node.parentNode)

        if (!type) return parent

        // loop trough ancestors if type is given
        while (parent && parent.node instanceof window.SVGElement) {
          if (typeof type === 'string' ? parent.matches(type) : parent instanceof type) return parent
          if (!parent.node.parentNode || parent.node.parentNode.nodeName == '#document') return null // #759, #720
          parent = SVG.adopt(parent.node.parentNode)
        }
      },
      // Get parent document
      doc: function () {
        return this instanceof SVG.Doc ? this : this.parent(SVG.Doc)
      },
      // return array of all ancestors of given type up to the root svg
      parents: function (type) {
        var parents = [], parent = this

        do {
          parent = parent.parent(type)
          if (!parent || !parent.node) break

          parents.push(parent)
        } while (parent.parent)

        return parents
      },
      // matches the element vs a css selector
      matches: function (selector) {
        return matches(this.node, selector)
      },
      // Returns the svg node to call native svg methods on it
      native: function () {
        return this.node
      },
      // Import raw svg
      svg: function (svg) {
      // create temporary holder
        var well = document.createElement('svg')

        // act as a setter if svg is given
        if (svg && this instanceof SVG.Parent) {
        // dump raw svg
          well.innerHTML = '<svg>' + svg.replace(/\n/, '').replace(/<([\w:-]+)([^<]+?)\/>/g, '<$1$2></$1>') + '</svg>'

          // transplant nodes
          for (var i = 0, il = well.firstChild.childNodes.length; i < il; i++) { this.node.appendChild(well.firstChild.firstChild) }

          // otherwise act as a getter
        } else {
        // create a wrapping svg element in case of partial content
          well.appendChild(svg = document.createElement('svg'))

          // write svgjs data to the dom
          this.writeDataToDom()

          // insert a copy of this node
          svg.appendChild(this.node.cloneNode(true))

          // return target element
          return well.innerHTML.replace(/^<svg>/, '').replace(/<\/svg>$/, '')
        }

        return this
      },
      // write svgjs data to the dom
      writeDataToDom: function () {
      // dump variables recursively
        if (this.each || this.lines) {
          var fn = this.each ? this : this.lines()
          fn.each(function () {
            this.writeDataToDom()
          })
        }

        // remove previously set data
        this.node.removeAttribute('svgjs:data')

        if (Object.keys(this.dom).length) { this.node.setAttribute('svgjs:data', JSON.stringify(this.dom)) } // see #428

        return this
      },
      // set given data to the elements data property
      setData: function (o) {
        this.dom = o
        return this
      },
      is: function (obj) {
        return is(this, obj)
      }
    }
  })

  SVG.easing = {
    '-': function (pos) { return pos },
    '<>': function (pos) { return -Math.cos(pos * Math.PI) / 2 + 0.5 },
    '>': function (pos) { return Math.sin(pos * Math.PI / 2) },
    '<': function (pos) { return -Math.cos(pos * Math.PI / 2) + 1 }
  }

  SVG.morph = function (pos) {
    return function (from, to) {
      return new SVG.MorphObj(from, to).at(pos)
    }
  }

  SVG.Situation = SVG.invent({

    create: function (o) {
      this.init = false
      this.reversed = false
      this.reversing = false

      this.duration = new SVG.Number(o.duration).valueOf()
      this.delay = new SVG.Number(o.delay).valueOf()

      this.start = +new Date() + this.delay
      this.finish = this.start + this.duration
      this.ease = o.ease

      // this.loop is incremented from 0 to this.loops
      // it is also incremented when in an infinite loop (when this.loops is true)
      this.loop = 0
      this.loops = false

      this.animations = {
      // functionToCall: [list of morphable objects]
      // e.g. move: [SVG.Number, SVG.Number]
      }

      this.attrs = {
      // holds all attributes which are not represented from a function svg.js provides
      // e.g. someAttr: SVG.Number
      }

      this.styles = {
      // holds all styles which should be animated
      // e.g. fill-color: SVG.Color
      }

      this.transforms = [
      // holds all transformations as transformation objects
      // e.g. [SVG.Rotate, SVG.Translate, SVG.Matrix]
      ]

      this.once = {
      // functions to fire at a specific position
      // e.g. "0.5": function foo(){}
      }
    }

  })

  SVG.FX = SVG.invent({

    create: function (element) {
      this._target = element
      this.situations = []
      this.active = false
      this.situation = null
      this.paused = false
      this.lastPos = 0
      this.pos = 0
      // The absolute position of an animation is its position in the context of its complete duration (including delay and loops)
      // When performing a delay, absPos is below 0 and when performing a loop, its value is above 1
      this.absPos = 0
      this._speed = 1
    },

    extend: {

    /**
     * sets or returns the target of this animation
     * @param o object || number In case of Object it holds all parameters. In case of number its the duration of the animation
     * @param ease function || string Function which should be used for easing or easing keyword
     * @param delay Number indicating the delay before the animation starts
     * @return target || this
     */
      animate: function (o, ease, delay) {
        if (typeof o === 'object') {
          ease = o.ease
          delay = o.delay
          o = o.duration
        }

        var situation = new SVG.Situation({
          duration: o || 1000,
          delay: delay || 0,
          ease: SVG.easing[ease || '-'] || ease
        })

        this.queue(situation)

        return this
      },

      /**
     * sets a delay before the next element of the queue is called
     * @param delay Duration of delay in milliseconds
     * @return this.target()
     */
      delay: function (delay) {
      // The delay is performed by an empty situation with its duration
      // attribute set to the duration of the delay
        var situation = new SVG.Situation({
          duration: delay,
          delay: 0,
          ease: SVG.easing['-']
        })

        return this.queue(situation)
      },

      /**
     * sets or returns the target of this animation
     * @param null || target SVG.Element which should be set as new target
     * @return target || this
     */
      target: function (target) {
        if (target && target instanceof SVG.Element) {
          this._target = target
          return this
        }

        return this._target
      },

      // returns the absolute position at a given time
      timeToAbsPos: function (timestamp) {
        return (timestamp - this.situation.start) / (this.situation.duration / this._speed)
      },

      // returns the timestamp from a given absolute positon
      absPosToTime: function (absPos) {
        return this.situation.duration / this._speed * absPos + this.situation.start
      },

      // starts the animationloop
      startAnimFrame: function () {
        this.stopAnimFrame()
        this.animationFrame = window.requestAnimationFrame(function () { this.step() }.bind(this))
      },

      // cancels the animationframe
      stopAnimFrame: function () {
        window.cancelAnimationFrame(this.animationFrame)
      },

      // kicks off the animation - only does something when the queue is currently not active and at least one situation is set
      start: function () {
      // dont start if already started
        if (!this.active && this.situation) {
          this.active = true
          this.startCurrent()
        }

        return this
      },

      // start the current situation
      startCurrent: function () {
        this.situation.start = +new Date() + this.situation.delay / this._speed
        this.situation.finish = this.situation.start + this.situation.duration / this._speed
        return this.initAnimations().step()
      },

      /**
     * adds a function / Situation to the animation queue
     * @param fn function / situation to add
     * @return this
     */
      queue: function (fn) {
        if (typeof fn === 'function' || fn instanceof SVG.Situation) { this.situations.push(fn) }

        if (!this.situation) this.situation = this.situations.shift()

        return this
      },

      /**
     * pulls next element from the queue and execute it
     * @return this
     */
      dequeue: function () {
      // stop current animation
        this.stop()

        // get next animation from queue
        this.situation = this.situations.shift()

        if (this.situation) {
          if (this.situation instanceof SVG.Situation) {
            this.start()
          } else {
          // If it is not a SVG.Situation, then it is a function, we execute it
            this.situation.call(this)
          }
        }

        return this
      },

      // updates all animations to the current state of the element
      // this is important when one property could be changed from another property
      initAnimations: function () {
        var i, j, source
        var s = this.situation

        if (s.init) return this

        for (i in s.animations) {
          source = this.target()[i]()

          if (!Array.isArray(source)) {
            source = [source]
          }

          if (!Array.isArray(s.animations[i])) {
            s.animations[i] = [s.animations[i]]
          }

          // if(s.animations[i].length > source.length) {
          //  source.concat = source.concat(s.animations[i].slice(source.length, s.animations[i].length))
          // }

          for (j = source.length; j--;) {
          // The condition is because some methods return a normal number instead
          // of a SVG.Number
            if (s.animations[i][j] instanceof SVG.Number) { source[j] = new SVG.Number(source[j]) }

            s.animations[i][j] = source[j].morph(s.animations[i][j])
          }
        }

        for (i in s.attrs) {
          s.attrs[i] = new SVG.MorphObj(this.target().attr(i), s.attrs[i])
        }

        for (i in s.styles) {
          s.styles[i] = new SVG.MorphObj(this.target().style(i), s.styles[i])
        }

        s.initialTransformation = this.target().matrixify()

        s.init = true
        return this
      },
      clearQueue: function () {
        this.situations = []
        return this
      },
      clearCurrent: function () {
        this.situation = null
        return this
      },
      /** stops the animation immediately
     * @param jumpToEnd A Boolean indicating whether to complete the current animation immediately.
     * @param clearQueue A Boolean indicating whether to remove queued animation as well.
     * @return this
     */
      stop: function (jumpToEnd, clearQueue) {
        var active = this.active
        this.active = false

        if (clearQueue) {
          this.clearQueue()
        }

        if (jumpToEnd && this.situation) {
        // initialize the situation if it was not
          !active && this.startCurrent()
          this.atEnd()
        }

        this.stopAnimFrame()

        return this.clearCurrent()
      },

      /** resets the element to the state where the current element has started
     * @return this
     */
      reset: function () {
        if (this.situation) {
          var temp = this.situation
          this.stop()
          this.situation = temp
          this.atStart()
        }
        return this
      },

      // Stop the currently-running animation, remove all queued animations, and complete all animations for the element.
      finish: function () {
        this.stop(true, false)

        while (this.dequeue().situation && this.stop(true, false));

        this.clearQueue().clearCurrent()

        return this
      },

      // set the internal animation pointer at the start position, before any loops, and updates the visualisation
      atStart: function () {
        return this.at(0, true)
      },

      // set the internal animation pointer at the end position, after all the loops, and updates the visualisation
      atEnd: function () {
        if (this.situation.loops === true) {
        // If in a infinite loop, we end the current iteration
          this.situation.loops = this.situation.loop + 1
        }

        if (typeof this.situation.loops === 'number') {
        // If performing a finite number of loops, we go after all the loops
          return this.at(this.situation.loops, true)
        } else {
        // If no loops, we just go at the end
          return this.at(1, true)
        }
      },

      // set the internal animation pointer to the specified position and updates the visualisation
      // if isAbsPos is true, pos is treated as an absolute position
      at: function (pos, isAbsPos) {
        var durDivSpd = this.situation.duration / this._speed

        this.absPos = pos
        // If pos is not an absolute position, we convert it into one
        if (!isAbsPos) {
          if (this.situation.reversed) this.absPos = 1 - this.absPos
          this.absPos += this.situation.loop
        }

        this.situation.start = +new Date() - this.absPos * durDivSpd
        this.situation.finish = this.situation.start + durDivSpd

        return this.step(true)
      },

      /**
     * sets or returns the speed of the animations
     * @param speed null || Number The new speed of the animations
     * @return Number || this
     */
      speed: function (speed) {
        if (speed === 0) return this.pause()

        if (speed) {
          this._speed = speed
          // We use an absolute position here so that speed can affect the delay before the animation
          return this.at(this.absPos, true)
        } else return this._speed
      },

      // Make loopable
      loop: function (times, reverse) {
        var c = this.last()

        // store total loops
        c.loops = (times != null) ? times : true
        c.loop = 0

        if (reverse) c.reversing = true
        return this
      },

      // pauses the animation
      pause: function () {
        this.paused = true
        this.stopAnimFrame()

        return this
      },

      // unpause the animation
      play: function () {
        if (!this.paused) return this
        this.paused = false
        // We use an absolute position here so that the delay before the animation can be paused
        return this.at(this.absPos, true)
      },

      /**
     * toggle or set the direction of the animation
     * true sets direction to backwards while false sets it to forwards
     * @param reversed Boolean indicating whether to reverse the animation or not (default: toggle the reverse status)
     * @return this
     */
      reverse: function (reversed) {
        var c = this.last()

        if (typeof reversed === 'undefined') c.reversed = !c.reversed
        else c.reversed = reversed

        return this
      },

      /**
     * returns a float from 0-1 indicating the progress of the current animation
     * @param eased Boolean indicating whether the returned position should be eased or not
     * @return number
     */
      progress: function (easeIt) {
        return easeIt ? this.situation.ease(this.pos) : this.pos
      },

      /**
     * adds a callback function which is called when the current animation is finished
     * @param fn Function which should be executed as callback
     * @return number
     */
      after: function (fn) {
        var c = this.last(),
          wrapper = function wrapper (e) {
            if (e.detail.situation == c) {
              fn.call(this, c)
              this.off('finished.fx', wrapper) // prevent memory leak
            }
          }

        this.target().on('finished.fx', wrapper)

        return this._callStart()
      },

      // adds a callback which is called whenever one animation step is performed
      during: function (fn) {
        var c = this.last(),
          wrapper = function (e) {
            if (e.detail.situation == c) {
              fn.call(this, e.detail.pos, SVG.morph(e.detail.pos), e.detail.eased, c)
            }
          }

        // see above
        this.target().off('during.fx', wrapper).on('during.fx', wrapper)

        this.after(function () {
          this.off('during.fx', wrapper)
        })

        return this._callStart()
      },

      // calls after ALL animations in the queue are finished
      afterAll: function (fn) {
        var wrapper = function wrapper (e) {
          fn.call(this)
          this.off('allfinished.fx', wrapper)
        }

        // see above
        this.target().off('allfinished.fx', wrapper).on('allfinished.fx', wrapper)

        return this._callStart()
      },

      // calls on every animation step for all animations
      duringAll: function (fn) {
        var wrapper = function (e) {
          fn.call(this, e.detail.pos, SVG.morph(e.detail.pos), e.detail.eased, e.detail.situation)
        }

        this.target().off('during.fx', wrapper).on('during.fx', wrapper)

        this.afterAll(function () {
          this.off('during.fx', wrapper)
        })

        return this._callStart()
      },

      last: function () {
        return this.situations.length ? this.situations[this.situations.length - 1] : this.situation
      },

      // adds one property to the animations
      add: function (method, args, type) {
        this.last()[type || 'animations'][method] = args
        return this._callStart()
      },

      /** perform one step of the animation
     *  @param ignoreTime Boolean indicating whether to ignore time and use position directly or recalculate position based on time
     *  @return this
     */
      step: function (ignoreTime) {
      // convert current time to an absolute position
        if (!ignoreTime) this.absPos = this.timeToAbsPos(+new Date())

        // This part convert an absolute position to a position
        if (this.situation.loops !== false) {
          var absPos, absPosInt, lastLoop

          // If the absolute position is below 0, we just treat it as if it was 0
          absPos = Math.max(this.absPos, 0)
          absPosInt = Math.floor(absPos)

          if (this.situation.loops === true || absPosInt < this.situation.loops) {
            this.pos = absPos - absPosInt
            lastLoop = this.situation.loop
            this.situation.loop = absPosInt
          } else {
            this.absPos = this.situation.loops
            this.pos = 1
            // The -1 here is because we don't want to toggle reversed when all the loops have been completed
            lastLoop = this.situation.loop - 1
            this.situation.loop = this.situation.loops
          }

          if (this.situation.reversing) {
          // Toggle reversed if an odd number of loops as occured since the last call of step
            this.situation.reversed = this.situation.reversed != Boolean((this.situation.loop - lastLoop) % 2)
          }
        } else {
        // If there are no loop, the absolute position must not be above 1
          this.absPos = Math.min(this.absPos, 1)
          this.pos = this.absPos
        }

        // while the absolute position can be below 0, the position must not be below 0
        if (this.pos < 0) this.pos = 0

        if (this.situation.reversed) this.pos = 1 - this.pos

        // apply easing
        var eased = this.situation.ease(this.pos)

        // call once-callbacks
        for (var i in this.situation.once) {
          if (i > this.lastPos && i <= eased) {
            this.situation.once[i].call(this.target(), this.pos, eased)
            delete this.situation.once[i]
          }
        }

        // fire during callback with position, eased position and current situation as parameter
        if (this.active) this.target().fire('during', {pos: this.pos, eased: eased, fx: this, situation: this.situation})

        // the user may call stop or finish in the during callback
        // so make sure that we still have a valid situation
        if (!this.situation) {
          return this
        }

        // apply the actual animation to every property
        this.eachAt()

        // do final code when situation is finished
        if ((this.pos == 1 && !this.situation.reversed) || (this.situation.reversed && this.pos == 0)) {
        // stop animation callback
          this.stopAnimFrame()

          // fire finished callback with current situation as parameter
          this.target().fire('finished', {fx: this, situation: this.situation})

          if (!this.situations.length) {
            this.target().fire('allfinished')

            // Recheck the length since the user may call animate in the afterAll callback
            if (!this.situations.length) {
              this.target().off('.fx') // there shouldnt be any binding left, but to make sure...
              this.active = false
            }
          }

          // start next animation
          if (this.active) this.dequeue()
          else this.clearCurrent()
        } else if (!this.paused && this.active) {
        // we continue animating when we are not at the end
          this.startAnimFrame()
        }

        // save last eased position for once callback triggering
        this.lastPos = eased
        return this
      },

      // calculates the step for every property and calls block with it
      eachAt: function () {
        var i, len, at, self = this, target = this.target(), s = this.situation

        // apply animations which can be called trough a method
        for (i in s.animations) {
          at = [].concat(s.animations[i]).map(function (el) {
            return typeof el !== 'string' && el.at ? el.at(s.ease(self.pos), self.pos) : el
          })

          target[i].apply(target, at)
        }

        // apply animation which has to be applied with attr()
        for (i in s.attrs) {
          at = [i].concat(s.attrs[i]).map(function (el) {
            return typeof el !== 'string' && el.at ? el.at(s.ease(self.pos), self.pos) : el
          })

          target.attr.apply(target, at)
        }

        // apply animation which has to be applied with style()
        for (i in s.styles) {
          at = [i].concat(s.styles[i]).map(function (el) {
            return typeof el !== 'string' && el.at ? el.at(s.ease(self.pos), self.pos) : el
          })

          target.style.apply(target, at)
        }

        // animate initialTransformation which has to be chained
        if (s.transforms.length) {
        // get initial initialTransformation
          at = s.initialTransformation
          for (i = 0, len = s.transforms.length; i < len; i++) {
          // get next transformation in chain
            var a = s.transforms[i]

            // multiply matrix directly
            if (a instanceof SVG.Matrix) {
              if (a.relative) {
                at = at.multiply(new SVG.Matrix().morph(a).at(s.ease(this.pos)))
              } else {
                at = at.morph(a).at(s.ease(this.pos))
              }
              continue
            }

            // when transformation is absolute we have to reset the needed transformation first
            if (!a.relative) { a.undo(at.extract()) }

            // and reapply it after
            at = at.multiply(a.at(s.ease(this.pos)))
          }

          // set new matrix on element
          target.matrix(at)
        }

        return this
      },

      // adds an once-callback which is called at a specific position and never again
      once: function (pos, fn, isEased) {
        var c = this.last()
        if (!isEased) pos = c.ease(pos)

        c.once[pos] = fn

        return this
      },

      _callStart: function () {
        setTimeout(function () { this.start() }.bind(this), 0)
        return this
      }

    },

    parent: SVG.Element,

    // Add method to parent elements
    construct: {
    // Get fx module or create a new one, then animate with given duration and ease
      animate: function (o, ease, delay) {
        return (this.fx || (this.fx = new SVG.FX(this))).animate(o, ease, delay)
      },
      delay: function (delay) {
        return (this.fx || (this.fx = new SVG.FX(this))).delay(delay)
      },
      stop: function (jumpToEnd, clearQueue) {
        if (this.fx) { this.fx.stop(jumpToEnd, clearQueue) }

        return this
      },
      finish: function () {
        if (this.fx) { this.fx.finish() }

        return this
      },
      // Pause current animation
      pause: function () {
        if (this.fx) { this.fx.pause() }

        return this
      },
      // Play paused current animation
      play: function () {
        if (this.fx) { this.fx.play() }

        return this
      },
      // Set/Get the speed of the animations
      speed: function (speed) {
        if (this.fx) {
          if (speed == null) { return this.fx.speed() } else { this.fx.speed(speed) }
        }

        return this
      }
    }

  })

  // MorphObj is used whenever no morphable object is given
  SVG.MorphObj = SVG.invent({

    create: function (from, to) {
    // prepare color for morphing
      if (SVG.Color.isColor(to)) return new SVG.Color(from).morph(to)
      // check if we have a list of values
      if (SVG.regex.delimiter.test(from)) {
      // prepare path for morphing
        if (SVG.regex.pathLetters.test(from)) return new SVG.PathArray(from).morph(to)
        // prepare value list for morphing
        else return new SVG.Array(from).morph(to)
      }
      // prepare number for morphing
      if (SVG.regex.numberAndUnit.test(to)) return new SVG.Number(from).morph(to)

      // prepare for plain morphing
      this.value = from
      this.destination = to
    },

    extend: {
      at: function (pos, real) {
        return real < 1 ? this.value : this.destination
      },

      valueOf: function () {
        return this.value
      }
    }

  })

  SVG.extend(SVG.FX, {
  // Add animatable attributes
    attr: function (a, v, relative) {
    // apply attributes individually
      if (typeof a === 'object') {
        for (var key in a) { this.attr(key, a[key]) }
      } else {
        this.add(a, v, 'attrs')
      }

      return this
    },
    // Add animatable styles
    style: function (s, v) {
      if (typeof s === 'object') {
        for (var key in s) { this.style(key, s[key]) }
      } else { this.add(s, v, 'styles') }

      return this
    },
    // Animatable x-axis
    x: function (x, relative) {
      if (this.target() instanceof SVG.G) {
        this.transform({x: x}, relative)
        return this
      }

      var num = new SVG.Number(x)
      num.relative = relative
      return this.add('x', num)
    },
    // Animatable y-axis
    y: function (y, relative) {
      if (this.target() instanceof SVG.G) {
        this.transform({y: y}, relative)
        return this
      }

      var num = new SVG.Number(y)
      num.relative = relative
      return this.add('y', num)
    },
    // Animatable center x-axis
    cx: function (x) {
      return this.add('cx', new SVG.Number(x))
    },
    // Animatable center y-axis
    cy: function (y) {
      return this.add('cy', new SVG.Number(y))
    },
    // Add animatable move
    move: function (x, y) {
      return this.x(x).y(y)
    },
    // Add animatable center
    center: function (x, y) {
      return this.cx(x).cy(y)
    },
    // Add animatable size
    size: function (width, height) {
      if (this.target() instanceof SVG.Text) {
      // animate font size for Text elements
        this.attr('font-size', width)
      } else {
      // animate bbox based size for all other elements
        var box

        if (!width || !height) {
          box = this.target().bbox()
        }

        if (!width) {
          width = box.width / box.height * height
        }

        if (!height) {
          height = box.height / box.width * width
        }

        this.add('width', new SVG.Number(width))
          .add('height', new SVG.Number(height))
      }

      return this
    },
    // Add animatable width
    width: function (width) {
      return this.add('width', new SVG.Number(width))
    },
    // Add animatable height
    height: function (height) {
      return this.add('height', new SVG.Number(height))
    },
    // Add animatable plot
    plot: function (a, b, c, d) {
    // Lines can be plotted with 4 arguments
      if (arguments.length == 4) {
        return this.plot([a, b, c, d])
      }

      return this.add('plot', new (this.target().morphArray)(a))
    },
    // Add leading method
    leading: function (value) {
      return this.target().leading
        ? this.add('leading', new SVG.Number(value))
        : this
    },
    // Add animatable viewbox
    viewbox: function (x, y, width, height) {
      if (this.target() instanceof SVG.Container) {
        this.add('viewbox', new SVG.ViewBox(x, y, width, height))
      }

      return this
    },
    update: function (o) {
      if (this.target() instanceof SVG.Stop) {
        if (typeof o === 'number' || o instanceof SVG.Number) {
          return this.update({
            offset: arguments[0],
            color: arguments[1],
            opacity: arguments[2]
          })
        }

        if (o.opacity != null) this.attr('stop-opacity', o.opacity)
        if (o.color != null) this.attr('stop-color', o.color)
        if (o.offset != null) this.attr('offset', o.offset)
      }

      return this
    }
  })

  SVG.Box = SVG.invent({
    create: function (x, y, width, height) {
      if (typeof x === 'object' && !(x instanceof SVG.Element)) {
      // chromes getBoundingClientRect has no x and y property
        return SVG.Box.call(this, x.left != null ? x.left : x.x, x.top != null ? x.top : x.y, x.width, x.height)
      } else if (arguments.length == 4) {
        this.x = x
        this.y = y
        this.width = width
        this.height = height
      }

      // add center, right, bottom...
      fullBox(this)
    },
    extend: {
    // Merge rect box with another, return a new instance
      merge: function (box) {
        var b = new this.constructor()

        // merge boxes
        b.x = Math.min(this.x, box.x)
        b.y = Math.min(this.y, box.y)
        b.width = Math.max(this.x + this.width, box.x + box.width) - b.x
        b.height = Math.max(this.y + this.height, box.y + box.height) - b.y

        return fullBox(b)
      },

      transform: function (m) {
        var xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, p, bbox

        var pts = [
          new SVG.Point(this.x, this.y),
          new SVG.Point(this.x2, this.y),
          new SVG.Point(this.x, this.y2),
          new SVG.Point(this.x2, this.y2)
        ]

        pts.forEach(function (p) {
          p = p.transform(m)
          xMin = Math.min(xMin, p.x)
          xMax = Math.max(xMax, p.x)
          yMin = Math.min(yMin, p.y)
          yMax = Math.max(yMax, p.y)
        })

        bbox = new this.constructor()
        bbox.x = xMin
        bbox.width = xMax - xMin
        bbox.y = yMin
        bbox.height = yMax - yMin

        fullBox(bbox)

        return bbox
      }
    }
  })

  SVG.BBox = SVG.invent({
  // Initialize
    create: function (element) {
      SVG.Box.apply(this, [].slice.call(arguments))

      // get values if element is given
      if (element instanceof SVG.Element) {
        var box

        // yes this is ugly, but Firefox can be a pain when it comes to elements that are not yet rendered
        try {
          if (!document.documentElement.contains) {
          // This is IE - it does not support contains() for top-level SVGs
            var topParent = element.node
            while (topParent.parentNode) {
              topParent = topParent.parentNode
            }
            if (topParent != document) throw new Error('Element not in the dom')
          } else {
          // the element is NOT in the dom, throw error
            // disabling the check below which fixes issue #76
            // if (!document.documentElement.contains(element.node)) throw new Exception('Element not in the dom')
          }

          // find native bbox
          box = element.node.getBBox()
        } catch (e) {
          if (element instanceof SVG.Shape) {
            if (!SVG.parser.draw) {
              // fixes apexcharts/vue-apexcharts #14
              SVG.prepare()
            }
            var clone = element.clone(SVG.parser.draw.instance).show()
            box = clone.node.getBBox()
            clone.remove()
          } else {
            box = {
              x: element.node.clientLeft,
              y: element.node.clientTop,
              width: element.node.clientWidth,
              height: element.node.clientHeight
            }
          }
        }

        SVG.Box.call(this, box)
      }
    },

    // Define ancestor
    inherit: SVG.Box,

    // Define Parent
    parent: SVG.Element,

    // Constructor
    construct: {
    // Get bounding box
      bbox: function () {
        return new SVG.BBox(this)
      }
    }

  })

  SVG.BBox.prototype.constructor = SVG.BBox

  SVG.extend(SVG.Element, {
    tbox: function () {
      console.warn('Use of TBox is deprecated and mapped to RBox. Use .rbox() instead.')
      return this.rbox(this.doc())
    }
  })

  SVG.RBox = SVG.invent({
  // Initialize
    create: function (element) {
      SVG.Box.apply(this, [].slice.call(arguments))

      if (element instanceof SVG.Element) {
        SVG.Box.call(this, element.node.getBoundingClientRect())
      }
    },

    inherit: SVG.Box,

    // define Parent
    parent: SVG.Element,

    extend: {
      addOffset: function () {
      // offset by window scroll position, because getBoundingClientRect changes when window is scrolled
        this.x += window.pageXOffset
        this.y += window.pageYOffset
        return this
      }
    },

    // Constructor
    construct: {
    // Get rect box
      rbox: function (el) {
        if (el) return new SVG.RBox(this).transform(el.screenCTM().inverse())
        return new SVG.RBox(this).addOffset()
      }
    }

  })

  SVG.RBox.prototype.constructor = SVG.RBox

  SVG.Matrix = SVG.invent({
  // Initialize
    create: function (source) {
      var i, base = arrayToMatrix([1, 0, 0, 1, 0, 0])

      // ensure source as object
      source = source instanceof SVG.Element
        ? source.matrixify()
        : typeof source === 'string'
          ? arrayToMatrix(source.split(SVG.regex.delimiter).map(parseFloat))
          : arguments.length == 6
            ? arrayToMatrix([].slice.call(arguments))
            : Array.isArray(source)
              ? arrayToMatrix(source)
              : typeof source === 'object'
                ? source : base

      // merge source
      for (i = abcdef.length - 1; i >= 0; --i) {
        this[abcdef[i]] = source[abcdef[i]] != null
          ? source[abcdef[i]] : base[abcdef[i]]
      }
    },

    // Add methods
    extend: {
    // Extract individual transformations
      extract: function () {
      // find delta transform points
        var px = deltaTransformPoint(this, 0, 1),
          py = deltaTransformPoint(this, 1, 0),
          skewX = 180 / Math.PI * Math.atan2(px.y, px.x) - 90

        return {
        // translation
          x: this.e,
          y: this.f,
          transformedX: (this.e * Math.cos(skewX * Math.PI / 180) + this.f * Math.sin(skewX * Math.PI / 180)) / Math.sqrt(this.a * this.a + this.b * this.b),
          transformedY: (this.f * Math.cos(skewX * Math.PI / 180) + this.e * Math.sin(-skewX * Math.PI / 180)) / Math.sqrt(this.c * this.c + this.d * this.d),
          // skew
          skewX: -skewX,
          skewY: 180 / Math.PI * Math.atan2(py.y, py.x),
          // scale
          scaleX: Math.sqrt(this.a * this.a + this.b * this.b),
          scaleY: Math.sqrt(this.c * this.c + this.d * this.d),
          // rotation
          rotation: skewX,
          a: this.a,
          b: this.b,
          c: this.c,
          d: this.d,
          e: this.e,
          f: this.f,
          matrix: new SVG.Matrix(this)
        }
      },
      // Clone matrix
      clone: function () {
        return new SVG.Matrix(this)
      },
      // Morph one matrix into another
      morph: function (matrix) {
      // store new destination
        this.destination = new SVG.Matrix(matrix)

        return this
      },
      // Get morphed matrix at a given position
      at: function (pos) {
      // make sure a destination is defined
        if (!this.destination) return this

        // calculate morphed matrix at a given position
        var matrix = new SVG.Matrix({
          a: this.a + (this.destination.a - this.a) * pos,
          b: this.b + (this.destination.b - this.b) * pos,
          c: this.c + (this.destination.c - this.c) * pos,
          d: this.d + (this.destination.d - this.d) * pos,
          e: this.e + (this.destination.e - this.e) * pos,
          f: this.f + (this.destination.f - this.f) * pos
        })

        return matrix
      },
      // Multiplies by given matrix
      multiply: function (matrix) {
        return new SVG.Matrix(this.native().multiply(parseMatrix(matrix).native()))
      },
      // Inverses matrix
      inverse: function () {
        return new SVG.Matrix(this.native().inverse())
      },
      // Translate matrix
      translate: function (x, y) {
        return new SVG.Matrix(this.native().translate(x || 0, y || 0))
      },
      // Scale matrix
      scale: function (x, y, cx, cy) {
      // support uniformal scale
        if (arguments.length == 1) {
          y = x
        } else if (arguments.length == 3) {
          cy = cx
          cx = y
          y = x
        }

        return this.around(cx, cy, new SVG.Matrix(x, 0, 0, y, 0, 0))
      },
      // Rotate matrix
      rotate: function (r, cx, cy) {
      // convert degrees to radians
        r = SVG.utils.radians(r)

        return this.around(cx, cy, new SVG.Matrix(Math.cos(r), Math.sin(r), -Math.sin(r), Math.cos(r), 0, 0))
      },
      // Flip matrix on x or y, at a given offset
      flip: function (a, o) {
        return a == 'x'
          ? this.scale(-1, 1, o, 0)
          : a == 'y'
            ? this.scale(1, -1, 0, o)
            : this.scale(-1, -1, a, o != null ? o : a)
      },
      // Skew
      skew: function (x, y, cx, cy) {
      // support uniformal skew
        if (arguments.length == 1) {
          y = x
        } else if (arguments.length == 3) {
          cy = cx
          cx = y
          y = x
        }

        // convert degrees to radians
        x = SVG.utils.radians(x)
        y = SVG.utils.radians(y)

        return this.around(cx, cy, new SVG.Matrix(1, Math.tan(y), Math.tan(x), 1, 0, 0))
      },
      // SkewX
      skewX: function (x, cx, cy) {
        return this.skew(x, 0, cx, cy)
      },
      // SkewY
      skewY: function (y, cx, cy) {
        return this.skew(0, y, cx, cy)
      },
      // Transform around a center point
      around: function (cx, cy, matrix) {
        return this
          .multiply(new SVG.Matrix(1, 0, 0, 1, cx || 0, cy || 0))
          .multiply(matrix)
          .multiply(new SVG.Matrix(1, 0, 0, 1, -cx || 0, -cy || 0))
      },
      // Convert to native SVGMatrix
      native: function () {
      // create new matrix
        var matrix = SVG.parser.native.createSVGMatrix()

        // update with current values
        for (var i = abcdef.length - 1; i >= 0; i--) { matrix[abcdef[i]] = this[abcdef[i]] }

        return matrix
      },
      // Convert matrix to string
      toString: function () {
      // Construct the matrix directly, avoid values that are too small
        return 'matrix(' + float32String(this.a) + ',' + float32String(this.b) +
        ',' + float32String(this.c) + ',' + float32String(this.d) +
        ',' + float32String(this.e) + ',' + float32String(this.f) +
        ')'
      }
    },

    // Define parent
    parent: SVG.Element,

    // Add parent method
    construct: {
    // Get current matrix
      ctm: function () {
        return new SVG.Matrix(this.node.getCTM())
      },
      // Get current screen matrix
      screenCTM: function () {
      /* https://bugzilla.mozilla.org/show_bug.cgi?id=1344537
         This is needed because FF does not return the transformation matrix
         for the inner coordinate system when getScreenCTM() is called on nested svgs.
         However all other Browsers do that */
        if (this instanceof SVG.Nested) {
          var rect = this.rect(1, 1)
          var m = rect.node.getScreenCTM()
          rect.remove()
          return new SVG.Matrix(m)
        }
        return new SVG.Matrix(this.node.getScreenCTM())
      }

    }

  })

  SVG.Point = SVG.invent({
  // Initialize
    create: function (x, y) {
      var i, source, base = {x: 0, y: 0}

      // ensure source as object
      source = Array.isArray(x)
        ? {x: x[0], y: x[1]}
        : typeof x === 'object'
          ? {x: x.x, y: x.y}
          : x != null
            ? {x: x, y: (y != null ? y : x)} : base // If y has no value, then x is used has its value

      // merge source
      this.x = source.x
      this.y = source.y
    },

    // Add methods
    extend: {
    // Clone point
      clone: function () {
        return new SVG.Point(this)
      },
      // Morph one point into another
      morph: function (x, y) {
      // store new destination
        this.destination = new SVG.Point(x, y)

        return this
      },
      // Get morphed point at a given position
      at: function (pos) {
      // make sure a destination is defined
        if (!this.destination) return this

        // calculate morphed matrix at a given position
        var point = new SVG.Point({
          x: this.x + (this.destination.x - this.x) * pos,
          y: this.y + (this.destination.y - this.y) * pos
        })

        return point
      },
      // Convert to native SVGPoint
      native: function () {
      // create new point
        var point = SVG.parser.native.createSVGPoint()

        // update with current values
        point.x = this.x
        point.y = this.y

        return point
      },
      // transform point with matrix
      transform: function (matrix) {
        return new SVG.Point(this.native().matrixTransform(matrix.native()))
      }

    }

  })

  SVG.extend(SVG.Element, {

  // Get point
    point: function (x, y) {
      return new SVG.Point(x, y).transform(this.screenCTM().inverse())
    }

  })

  SVG.extend(SVG.Element, {
  // Set svg element attribute
    attr: function (a, v, n) {
    // act as full getter
      if (a == null) {
      // get an object of attributes
        a = {}
        v = this.node.attributes
        for (n = v.length - 1; n >= 0; n--) { a[v[n].nodeName] = SVG.regex.isNumber.test(v[n].nodeValue) ? parseFloat(v[n].nodeValue) : v[n].nodeValue }

        return a
      } else if (typeof a === 'object') {
      // apply every attribute individually if an object is passed
        for (v in a) this.attr(v, a[v])
      } else if (v === null) {
        // remove value
        this.node.removeAttribute(a)
      } else if (v == null) {
      // act as a getter if the first and only argument is not an object
        v = this.node.getAttribute(a)
        return v == null
          ? SVG.defaults.attrs[a]
          : SVG.regex.isNumber.test(v)
            ? parseFloat(v) : v
      } else {
      // BUG FIX: some browsers will render a stroke if a color is given even though stroke width is 0
        if (a == 'stroke-width') { this.attr('stroke', parseFloat(v) > 0 ? this._stroke : null) } else if (a == 'stroke') { this._stroke = v }

        // convert image fill and stroke to patterns
        if (a == 'fill' || a == 'stroke') {
          if (SVG.regex.isImage.test(v)) { v = this.doc().defs().image(v, 0, 0) }

          if (v instanceof SVG.Image) {
            v = this.doc().defs().pattern(0, 0, function () {
              this.add(v)
            })
          }
        }

        // ensure correct numeric values (also accepts NaN and Infinity)
        if (typeof v === 'number') { v = new SVG.Number(v) }

        // ensure full hex color
        else if (SVG.Color.isColor(v)) { v = new SVG.Color(v) }

        // parse array values
        else if (Array.isArray(v)) { v = new SVG.Array(v) }

        // if the passed attribute is leading...
        if (a == 'leading') {
        // ... call the leading method instead
          if (this.leading) { this.leading(v) }
        } else {
        // set given attribute on node
          typeof n === 'string'
            ? this.node.setAttributeNS(n, a, v.toString())
            : this.node.setAttribute(a, v.toString())
        }

        // rebuild if required
        if (this.rebuild && (a == 'font-size' || a == 'x')) { this.rebuild(a, v) }
      }

      return this
    }
  })
  SVG.extend(SVG.Element, {
  // Add transformations
    transform: function (o, relative) {
    // get target in case of the fx module, otherwise reference this
      var target = this,
        matrix, bbox

      // act as a getter
      if (typeof o !== 'object') {
      // get current matrix
        matrix = new SVG.Matrix(target).extract()

        return typeof o === 'string' ? matrix[o] : matrix
      }

      // get current matrix
      matrix = new SVG.Matrix(target)

      // ensure relative flag
      relative = !!relative || !!o.relative

      // act on matrix
      if (o.a != null) {
        matrix = relative
        // relative
          ? matrix.multiply(new SVG.Matrix(o))
        // absolute
          : new SVG.Matrix(o)

        // act on rotation
      } else if (o.rotation != null) {
      // ensure centre point
        ensureCentre(o, target)

        // apply transformation
        matrix = relative
        // relative
          ? matrix.rotate(o.rotation, o.cx, o.cy)
        // absolute
          : matrix.rotate(o.rotation - matrix.extract().rotation, o.cx, o.cy)

        // act on scale
      } else if (o.scale != null || o.scaleX != null || o.scaleY != null) {
      // ensure centre point
        ensureCentre(o, target)

        // ensure scale values on both axes
        o.scaleX = o.scale != null ? o.scale : o.scaleX != null ? o.scaleX : 1
        o.scaleY = o.scale != null ? o.scale : o.scaleY != null ? o.scaleY : 1

        if (!relative) {
        // absolute; multiply inversed values
          var e = matrix.extract()
          o.scaleX = o.scaleX * 1 / e.scaleX
          o.scaleY = o.scaleY * 1 / e.scaleY
        }

        matrix = matrix.scale(o.scaleX, o.scaleY, o.cx, o.cy)

        // act on skew
      } else if (o.skew != null || o.skewX != null || o.skewY != null) {
      // ensure centre point
        ensureCentre(o, target)

        // ensure skew values on both axes
        o.skewX = o.skew != null ? o.skew : o.skewX != null ? o.skewX : 0
        o.skewY = o.skew != null ? o.skew : o.skewY != null ? o.skewY : 0

        if (!relative) {
        // absolute; reset skew values
          var e = matrix.extract()
          matrix = matrix.multiply(new SVG.Matrix().skew(e.skewX, e.skewY, o.cx, o.cy).inverse())
        }

        matrix = matrix.skew(o.skewX, o.skewY, o.cx, o.cy)

        // act on flip
      } else if (o.flip) {
        if (o.flip == 'x' || o.flip == 'y') {
          o.offset = o.offset == null ? target.bbox()['c' + o.flip] : o.offset
        } else {
          if (o.offset == null) {
            bbox = target.bbox()
            o.flip = bbox.cx
            o.offset = bbox.cy
          } else {
            o.flip = o.offset
          }
        }

        matrix = new SVG.Matrix().flip(o.flip, o.offset)

        // act on translate
      } else if (o.x != null || o.y != null) {
        if (relative) {
        // relative
          matrix = matrix.translate(o.x, o.y)
        } else {
        // absolute
          if (o.x != null) matrix.e = o.x
          if (o.y != null) matrix.f = o.y
        }
      }

      return this.attr('transform', matrix)
    }
  })

  SVG.extend(SVG.FX, {
    transform: function (o, relative) {
    // get target in case of the fx module, otherwise reference this
      var target = this.target(),
        matrix, bbox

      // act as a getter
      if (typeof o !== 'object') {
      // get current matrix
        matrix = new SVG.Matrix(target).extract()

        return typeof o === 'string' ? matrix[o] : matrix
      }

      // ensure relative flag
      relative = !!relative || !!o.relative

      // act on matrix
      if (o.a != null) {
        matrix = new SVG.Matrix(o)

        // act on rotation
      } else if (o.rotation != null) {
      // ensure centre point
        ensureCentre(o, target)

        // apply transformation
        matrix = new SVG.Rotate(o.rotation, o.cx, o.cy)

        // act on scale
      } else if (o.scale != null || o.scaleX != null || o.scaleY != null) {
      // ensure centre point
        ensureCentre(o, target)

        // ensure scale values on both axes
        o.scaleX = o.scale != null ? o.scale : o.scaleX != null ? o.scaleX : 1
        o.scaleY = o.scale != null ? o.scale : o.scaleY != null ? o.scaleY : 1

        matrix = new SVG.Scale(o.scaleX, o.scaleY, o.cx, o.cy)

        // act on skew
      } else if (o.skewX != null || o.skewY != null) {
      // ensure centre point
        ensureCentre(o, target)

        // ensure skew values on both axes
        o.skewX = o.skewX != null ? o.skewX : 0
        o.skewY = o.skewY != null ? o.skewY : 0

        matrix = new SVG.Skew(o.skewX, o.skewY, o.cx, o.cy)

        // act on flip
      } else if (o.flip) {
        if (o.flip == 'x' || o.flip == 'y') {
          o.offset = o.offset == null ? target.bbox()['c' + o.flip] : o.offset
        } else {
          if (o.offset == null) {
            bbox = target.bbox()
            o.flip = bbox.cx
            o.offset = bbox.cy
          } else {
            o.flip = o.offset
          }
        }

        matrix = new SVG.Matrix().flip(o.flip, o.offset)

        // act on translate
      } else if (o.x != null || o.y != null) {
        matrix = new SVG.Translate(o.x, o.y)
      }

      if (!matrix) return this

      matrix.relative = relative

      this.last().transforms.push(matrix)

      return this._callStart()
    }
  })

  SVG.extend(SVG.Element, {
  // Reset all transformations
    untransform: function () {
      return this.attr('transform', null)
    },
    // merge the whole transformation chain into one matrix and returns it
    matrixify: function () {
      var matrix = (this.attr('transform') || '')
      // split transformations
        .split(SVG.regex.transforms).slice(0, -1).map(function (str) {
        // generate key => value pairs
          var kv = str.trim().split('(')
          return [kv[0], kv[1].split(SVG.regex.delimiter).map(function (str) { return parseFloat(str) })]
        })
      // merge every transformation into one matrix
        .reduce(function (matrix, transform) {
          if (transform[0] == 'matrix') return matrix.multiply(arrayToMatrix(transform[1]))
          return matrix[transform[0]].apply(matrix, transform[1])
        }, new SVG.Matrix())

      return matrix
    },
    // add an element to another parent without changing the visual representation on the screen
    toParent: function (parent) {
      if (this == parent) return this
      var ctm = this.screenCTM()
      var pCtm = parent.screenCTM().inverse()

      this.addTo(parent).untransform().transform(pCtm.multiply(ctm))

      return this
    },
    // same as above with parent equals root-svg
    toDoc: function () {
      return this.toParent(this.doc())
    }

  })

  SVG.Transformation = SVG.invent({

    create: function (source, inversed) {
      if (arguments.length > 1 && typeof inversed !== 'boolean') {
        return this.constructor.call(this, [].slice.call(arguments))
      }

      if (Array.isArray(source)) {
        for (var i = 0, len = this.arguments.length; i < len; ++i) {
          this[this.arguments[i]] = source[i]
        }
      } else if (typeof source === 'object') {
        for (var i = 0, len = this.arguments.length; i < len; ++i) {
          this[this.arguments[i]] = source[this.arguments[i]]
        }
      }

      this.inversed = false

      if (inversed === true) {
        this.inversed = true
      }
    },

    extend: {

      arguments: [],
      method: '',

      at: function (pos) {
        var params = []

        for (var i = 0, len = this.arguments.length; i < len; ++i) {
          params.push(this[this.arguments[i]])
        }

        var m = this._undo || new SVG.Matrix()

        m = new SVG.Matrix().morph(SVG.Matrix.prototype[this.method].apply(m, params)).at(pos)

        return this.inversed ? m.inverse() : m
      },

      undo: function (o) {
        for (var i = 0, len = this.arguments.length; i < len; ++i) {
          o[this.arguments[i]] = typeof this[this.arguments[i]] === 'undefined' ? 0 : o[this.arguments[i]]
        }

        // The method SVG.Matrix.extract which was used before calling this
        // method to obtain a value for the parameter o doesn't return a cx and
        // a cy so we use the ones that were provided to this object at its creation
        o.cx = this.cx
        o.cy = this.cy

        this._undo = new SVG[capitalize(this.method)](o, true).at(1)

        return this
      }

    }

  })

  SVG.Translate = SVG.invent({

    parent: SVG.Matrix,
    inherit: SVG.Transformation,

    create: function (source, inversed) {
      this.constructor.apply(this, [].slice.call(arguments))
    },

    extend: {
      arguments: ['transformedX', 'transformedY'],
      method: 'translate'
    }

  })

  SVG.Rotate = SVG.invent({

    parent: SVG.Matrix,
    inherit: SVG.Transformation,

    create: function (source, inversed) {
      this.constructor.apply(this, [].slice.call(arguments))
    },

    extend: {
      arguments: ['rotation', 'cx', 'cy'],
      method: 'rotate',
      at: function (pos) {
        var m = new SVG.Matrix().rotate(new SVG.Number().morph(this.rotation - (this._undo ? this._undo.rotation : 0)).at(pos), this.cx, this.cy)
        return this.inversed ? m.inverse() : m
      },
      undo: function (o) {
        this._undo = o
        return this
      }
    }

  })

  SVG.Scale = SVG.invent({

    parent: SVG.Matrix,
    inherit: SVG.Transformation,

    create: function (source, inversed) {
      this.constructor.apply(this, [].slice.call(arguments))
    },

    extend: {
      arguments: ['scaleX', 'scaleY', 'cx', 'cy'],
      method: 'scale'
    }

  })

  SVG.Skew = SVG.invent({

    parent: SVG.Matrix,
    inherit: SVG.Transformation,

    create: function (source, inversed) {
      this.constructor.apply(this, [].slice.call(arguments))
    },

    extend: {
      arguments: ['skewX', 'skewY', 'cx', 'cy'],
      method: 'skew'
    }

  })

  SVG.extend(SVG.Element, {
  // Dynamic style generator
    style: function (s, v) {
      if (arguments.length == 0) {
      // get full style
        return this.node.style.cssText || ''
      } else if (arguments.length < 2) {
      // apply every style individually if an object is passed
        if (typeof s === 'object') {
          for (v in s) this.style(v, s[v])
        } else if (SVG.regex.isCss.test(s)) {
        // parse css string
          s = s.split(/\s*;\s*/)
          // filter out suffix ; and stuff like ;;
            .filter(function (e) { return !!e })
            .map(function (e) { return e.split(/\s*:\s*/) })

          // apply every definition individually
          while (v = s.pop()) {
            this.style(v[0], v[1])
          }
        } else {
        // act as a getter if the first and only argument is not an object
          return this.node.style[camelCase(s)]
        }
      } else {
        this.node.style[camelCase(s)] = v === null || SVG.regex.isBlank.test(v) ? '' : v
      }

      return this
    }
  })
  SVG.Parent = SVG.invent({
  // Initialize node
    create: function (element) {
      this.constructor.call(this, element)
    },

    // Inherit from
    inherit: SVG.Element,

    // Add class methods
    extend: {
    // Returns all child elements
      children: function () {
        return SVG.utils.map(SVG.utils.filterSVGElements(this.node.childNodes), function (node) {
          return SVG.adopt(node)
        })
      },
      // Add given element at a position
      add: function (element, i) {
        if (i == null) { this.node.appendChild(element.node) } else if (element.node != this.node.childNodes[i]) { this.node.insertBefore(element.node, this.node.childNodes[i]) }

        return this
      },
      // Basically does the same as `add()` but returns the added element instead
      put: function (element, i) {
        this.add(element, i)
        return element
      },
      // Checks if the given element is a child
      has: function (element) {
        return this.index(element) >= 0
      },
      // Gets index of given element
      index: function (element) {
        return [].slice.call(this.node.childNodes).indexOf(element.node)
      },
      // Get a element at the given index
      get: function (i) {
        return SVG.adopt(this.node.childNodes[i])
      },
      // Get first child
      first: function () {
        return this.get(0)
      },
      // Get the last child
      last: function () {
        return this.get(this.node.childNodes.length - 1)
      },
      // Iterates over all children and invokes a given block
      each: function (block, deep) {
        var i, il,
          children = this.children()

        for (i = 0, il = children.length; i < il; i++) {
          if (children[i] instanceof SVG.Element) { block.apply(children[i], [i, children]) }

          if (deep && (children[i] instanceof SVG.Container)) { children[i].each(block, deep) }
        }

        return this
      },
      // Remove a given child
      removeElement: function (element) {
        this.node.removeChild(element.node)

        return this
      },
      // Remove all elements in this container
      clear: function () {
      // remove children
        while (this.node.hasChildNodes()) { this.node.removeChild(this.node.lastChild) }

        // remove defs reference
        delete this._defs

        return this
      }, // Get defs
      defs: function () {
        return this.doc().defs()
      }
    }

  })

  SVG.extend(SVG.Parent, {

    ungroup: function (parent, depth) {
      if (depth === 0 || this instanceof SVG.Defs || this.node == SVG.parser.draw) return this

      parent = parent || (this instanceof SVG.Doc ? this : this.parent(SVG.Parent))
      depth = depth || Infinity

      this.each(function () {
        if (this instanceof SVG.Defs) return this
        if (this instanceof SVG.Parent) return this.ungroup(parent, depth - 1)
        return this.toParent(parent)
      })

      this.node.firstChild || this.remove()

      return this
    },

    flatten: function (parent, depth) {
      return this.ungroup(parent, depth)
    }

  })
  SVG.Container = SVG.invent({
  // Initialize node
    create: function (element) {
      this.constructor.call(this, element)
    },

    // Inherit from
    inherit: SVG.Parent

  })

  SVG.ViewBox = SVG.invent({

    create: function (source) {
      var i, base = [0, 0, 0, 0]

      var x, y, width, height, box, view, we, he,
        wm = 1, // width multiplier
        hm = 1, // height multiplier
        reg = /[+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?/gi

      if (source instanceof SVG.Element) {
        we = source
        he = source
        view = (source.attr('viewBox') || '').match(reg)
        box = source.bbox

        // get dimensions of current node
        width = new SVG.Number(source.width())
        height = new SVG.Number(source.height())

        // find nearest non-percentual dimensions
        while (width.unit == '%') {
          wm *= width.value
          width = new SVG.Number(we instanceof SVG.Doc ? we.parent().offsetWidth : we.parent().width())
          we = we.parent()
        }
        while (height.unit == '%') {
          hm *= height.value
          height = new SVG.Number(he instanceof SVG.Doc ? he.parent().offsetHeight : he.parent().height())
          he = he.parent()
        }

        // ensure defaults
        this.x = 0
        this.y = 0
        this.width = width * wm
        this.height = height * hm
        this.zoom = 1

        if (view) {
        // get width and height from viewbox
          x = parseFloat(view[0])
          y = parseFloat(view[1])
          width = parseFloat(view[2])
          height = parseFloat(view[3])

          // calculate zoom accoring to viewbox
          this.zoom = ((this.width / this.height) > (width / height))
            ? this.height / height
            : this.width / width

          // calculate real pixel dimensions on parent SVG.Doc element
          this.x = x
          this.y = y
          this.width = width
          this.height = height
        }
      } else {
      // ensure source as object
        source = typeof source === 'string'
          ? source.match(reg).map(function (el) { return parseFloat(el) })
          : Array.isArray(source)
            ? source
            : typeof source === 'object'
              ? [source.x, source.y, source.width, source.height]
              : arguments.length == 4
                ? [].slice.call(arguments)
                : base

        this.x = source[0]
        this.y = source[1]
        this.width = source[2]
        this.height = source[3]
      }
    },

    extend: {

      toString: function () {
        return this.x + ' ' + this.y + ' ' + this.width + ' ' + this.height
      },
      morph: function (x, y, width, height) {
        this.destination = new SVG.ViewBox(x, y, width, height)
        return this
      },

      at: function (pos) {
        if (!this.destination) return this

        return new SVG.ViewBox([
          this.x + (this.destination.x - this.x) * pos,
          this.y + (this.destination.y - this.y) * pos,
          this.width + (this.destination.width - this.width) * pos,
          this.height + (this.destination.height - this.height) * pos
        ])
      }

    },

    // Define parent
    parent: SVG.Container,

    // Add parent method
    construct: {

    // get/set viewbox
      viewbox: function (x, y, width, height) {
        if (arguments.length == 0)
        // act as a getter if there are no arguments
        { return new SVG.ViewBox(this) }

        // otherwise act as a setter
        return this.attr('viewBox', new SVG.ViewBox(x, y, width, height))
      }

    }

  })
  // Add events to elements
  ;[ 'click',
    'dblclick',
    'mousedown',
    'mouseup',
    'mouseover',
    'mouseout',
    'mousemove',
    // , 'mouseenter' -> not supported by IE
    // , 'mouseleave' -> not supported by IE
    'touchstart',
    'touchmove',
    'touchleave',
    'touchend',
    'touchcancel' ].forEach(function (event) {
  // add event to SVG.Element
    SVG.Element.prototype[event] = function (f) {
    // bind event to element rather than element node
      SVG.on(this.node, event, f)
      return this
    }
  })

  // Initialize listeners stack
  SVG.listeners = []
  SVG.handlerMap = []
  SVG.listenerId = 0

  // Add event binder in the SVG namespace
  SVG.on = function (node, event, listener, binding, options) {
  // create listener, get object-index
    var l = listener.bind(binding || node.instance || node),
      index = (SVG.handlerMap.indexOf(node) + 1 || SVG.handlerMap.push(node)) - 1,
      ev = event.split('.')[0],
      ns = event.split('.')[1] || '*'

    // ensure valid object
    SVG.listeners[index] = SVG.listeners[index] || {}
    SVG.listeners[index][ev] = SVG.listeners[index][ev] || {}
    SVG.listeners[index][ev][ns] = SVG.listeners[index][ev][ns] || {}

    if (!listener._svgjsListenerId) { listener._svgjsListenerId = ++SVG.listenerId }

    // reference listener
    SVG.listeners[index][ev][ns][listener._svgjsListenerId] = l

    // add listener
    node.addEventListener(ev, l, options || false)
  }

  // Add event unbinder in the SVG namespace
  SVG.off = function (node, event, listener) {
    var index = SVG.handlerMap.indexOf(node),
      ev = event && event.split('.')[0],
      ns = event && event.split('.')[1],
      namespace = ''

    if (index == -1) return

    if (listener) {
      if (typeof listener === 'function') listener = listener._svgjsListenerId
      if (!listener) return

      // remove listener reference
      if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns || '*']) {
      // remove listener
        node.removeEventListener(ev, SVG.listeners[index][ev][ns || '*'][listener], false)

        delete SVG.listeners[index][ev][ns || '*'][listener]
      }
    } else if (ns && ev) {
    // remove all listeners for a namespaced event
      if (SVG.listeners[index][ev] && SVG.listeners[index][ev][ns]) {
        for (listener in SVG.listeners[index][ev][ns]) { SVG.off(node, [ev, ns].join('.'), listener) }

        delete SVG.listeners[index][ev][ns]
      }
    } else if (ns) {
    // remove all listeners for a specific namespace
      for (event in SVG.listeners[index]) {
        for (namespace in SVG.listeners[index][event]) {
          if (ns === namespace) {
            SVG.off(node, [event, ns].join('.'))
          }
        }
      }
    } else if (ev) {
    // remove all listeners for the event
      if (SVG.listeners[index][ev]) {
        for (namespace in SVG.listeners[index][ev]) { SVG.off(node, [ev, namespace].join('.')) }

        delete SVG.listeners[index][ev]
      }
    } else {
    // remove all listeners on a given node
      for (event in SVG.listeners[index]) { SVG.off(node, event) }

      delete SVG.listeners[index]
      delete SVG.handlerMap[index]
    }
  }

  //
  SVG.extend(SVG.Element, {
  // Bind given event to listener
    on: function (event, listener, binding, options) {
      SVG.on(this.node, event, listener, binding, options)

      return this
    },
    // Unbind event from listener
    off: function (event, listener) {
      SVG.off(this.node, event, listener)

      return this
    },
    // Fire given event
    fire: function (event, data) {
    // Dispatch event
      if (event instanceof window.Event) {
        this.node.dispatchEvent(event)
      } else {
        this.node.dispatchEvent(event = new SVG.CustomEvent(event, {detail: data, cancelable: true}))
      }

      this._event = event
      return this
    },
    event: function () {
      return this._event
    }
  })

  SVG.Defs = SVG.invent({
  // Initialize node
    create: 'defs',

    // Inherit from
    inherit: SVG.Container

  })
  SVG.G = SVG.invent({
  // Initialize node
    create: 'g',

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Move over x-axis
      x: function (x) {
        return x == null ? this.transform('x') : this.transform({ x: x - this.x() }, true)
      },
      // Move over y-axis
      y: function (y) {
        return y == null ? this.transform('y') : this.transform({ y: y - this.y() }, true)
      },
      // Move by center over x-axis
      cx: function (x) {
        return x == null ? this.gbox().cx : this.x(x - this.gbox().width / 2)
      },
      // Move by center over y-axis
      cy: function (y) {
        return y == null ? this.gbox().cy : this.y(y - this.gbox().height / 2)
      },
      gbox: function () {
        var bbox = this.bbox(),
          trans = this.transform()

        bbox.x += trans.x
        bbox.x2 += trans.x
        bbox.cx += trans.x

        bbox.y += trans.y
        bbox.y2 += trans.y
        bbox.cy += trans.y

        return bbox
      }
    },

    // Add parent method
    construct: {
    // Create a group element
      group: function () {
        return this.put(new SVG.G())
      }
    }
  })

  SVG.Doc = SVG.invent({
  // Initialize node
    create: function (element) {
      if (element) {
      // ensure the presence of a dom element
        element = typeof element === 'string'
          ? document.getElementById(element)
          : element

        // If the target is an svg element, use that element as the main wrapper.
        // This allows svg.js to work with svg documents as well.
        if (element.nodeName == 'svg') {
          this.constructor.call(this, element)
        } else {
          this.constructor.call(this, SVG.create('svg'))
          element.appendChild(this.node)
          this.size('100%', '100%')
        }

        // set svg element attributes and ensure defs node
        this.namespace().defs()
      }
    },

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Add namespaces
      namespace: function () {
        return this
          .attr({ xmlns: SVG.ns, version: '1.1' })
          .attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
          .attr('xmlns:svgjs', SVG.svgjs, SVG.xmlns)
      },
      // Creates and returns defs element
      defs: function () {
        if (!this._defs) {
          var defs

          // Find or create a defs element in this instance
          if (defs = this.node.getElementsByTagName('defs')[0]) { this._defs = SVG.adopt(defs) } else { this._defs = new SVG.Defs() }

          // Make sure the defs node is at the end of the stack
          this.node.appendChild(this._defs.node)
        }

        return this._defs
      },
      // custom parent method
      parent: function () {
        if (!this.node.parentNode || this.node.parentNode.nodeName == '#document') return null
        return this.node.parentNode
      },
      // Fix for possible sub-pixel offset. See:
      // https://bugzilla.mozilla.org/show_bug.cgi?id=608812
      spof: function () {
        var pos = this.node.getScreenCTM()

        if (pos) {
          this
            .style('left', (-pos.e % 1) + 'px')
            .style('top', (-pos.f % 1) + 'px')
        }

        return this
      },

      // Removes the doc from the DOM
      remove: function () {
        if (this.parent()) {
          this.parent().removeChild(this.node)
        }

        return this
      },
      clear: function () {
      // remove children
        while (this.node.hasChildNodes()) { this.node.removeChild(this.node.lastChild) }

        // remove defs reference
        delete this._defs

        // add back parser
        if (SVG.parser.draw && !SVG.parser.draw.parentNode) { this.node.appendChild(SVG.parser.draw) }

        return this
      },
      clone: function (parent) {
      // write dom data to the dom so the clone can pickup the data
        this.writeDataToDom()

        // get reference to node
        var node = this.node

        // clone element and assign new id
        var clone = assignNewId(node.cloneNode(true))

        // insert the clone in the given parent or after myself
        if (parent) {
          (parent.node || parent).appendChild(clone.node)
        } else {
          node.parentNode.insertBefore(clone.node, node.nextSibling)
        }

        return clone
      }
    }

  })

  // ### This module adds backward / forward functionality to elements.

  //
  SVG.extend(SVG.Element, {
  // Get all siblings, including myself
    siblings: function () {
      return this.parent().children()
    },
    // Get the curent position siblings
    position: function () {
      return this.parent().index(this)
    },
    // Get the next element (will return null if there is none)
    next: function () {
      return this.siblings()[this.position() + 1]
    },
    // Get the next element (will return null if there is none)
    previous: function () {
      return this.siblings()[this.position() - 1]
    },
    // Send given element one step forward
    forward: function () {
      var i = this.position() + 1,
        p = this.parent()

      // move node one step forward
      p.removeElement(this).add(this, i)

      // make sure defs node is always at the top
      if (p instanceof SVG.Doc) { p.node.appendChild(p.defs().node) }

      return this
    },
    // Send given element one step backward
    backward: function () {
      var i = this.position()

      if (i > 0) { this.parent().removeElement(this).add(this, i - 1) }

      return this
    },
    // Send given element all the way to the front
    front: function () {
      var p = this.parent()

      // Move node forward
      p.node.appendChild(this.node)

      // Make sure defs node is always at the top
      if (p instanceof SVG.Doc) { p.node.appendChild(p.defs().node) }

      return this
    },
    // Send given element all the way to the back
    back: function () {
      if (this.position() > 0) { this.parent().removeElement(this).add(this, 0) }

      return this
    },
    // Inserts a given element before the targeted element
    before: function (element) {
      element.remove()

      var i = this.position()

      this.parent().add(element, i)

      return this
    },
    // Insters a given element after the targeted element
    after: function (element) {
      element.remove()

      var i = this.position()

      this.parent().add(element, i + 1)

      return this
    }

  })
  SVG.Mask = SVG.invent({
  // Initialize node
    create: function () {
      this.constructor.call(this, SVG.create('mask'))

      // keep references to masked elements
      this.targets = []
    },

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Unmask all masked elements and remove itself
      remove: function () {
      // unmask all targets
        for (var i = this.targets.length - 1; i >= 0; i--) {
          if (this.targets[i]) { this.targets[i].unmask() }
        }
        this.targets = []

        // remove mask from parent
        SVG.Element.prototype.remove.call(this)

        return this
      }
    },

    // Add parent method
    construct: {
    // Create masking element
      mask: function () {
        return this.defs().put(new SVG.Mask())
      }
    }
  })

  SVG.extend(SVG.Element, {
  // Distribute mask to svg element
    maskWith: function (element) {
    // use given mask or create a new one
      this.masker = element instanceof SVG.Mask ? element : this.parent().mask().add(element)

      // store reverence on self in mask
      this.masker.targets.push(this)

      // apply mask
      return this.attr('mask', 'url("#' + this.masker.attr('id') + '")')
    },
    // Unmask element
    unmask: function () {
      delete this.masker
      return this.attr('mask', null)
    }

  })

  SVG.ClipPath = SVG.invent({
  // Initialize node
    create: function () {
      this.constructor.call(this, SVG.create('clipPath'))

      // keep references to clipped elements
      this.targets = []
    },

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Unclip all clipped elements and remove itself
      remove: function () {
      // unclip all targets
        for (var i = this.targets.length - 1; i >= 0; i--) {
          if (this.targets[i]) { this.targets[i].unclip() }
        }
        this.targets = []

        // remove clipPath from parent
        this.parent().removeElement(this)

        return this
      }
    },

    // Add parent method
    construct: {
    // Create clipping element
      clip: function () {
        return this.defs().put(new SVG.ClipPath())
      }
    }
  })

  //
  SVG.extend(SVG.Element, {
  // Distribute clipPath to svg element
    clipWith: function (element) {
    // use given clip or create a new one
      this.clipper = element instanceof SVG.ClipPath ? element : this.parent().clip().add(element)

      // store reverence on self in mask
      this.clipper.targets.push(this)

      // apply mask
      return this.attr('clip-path', 'url("#' + this.clipper.attr('id') + '")')
    },
    // Unclip element
    unclip: function () {
      delete this.clipper
      return this.attr('clip-path', null)
    }

  })
  SVG.Gradient = SVG.invent({
  // Initialize node
    create: function (type) {
      this.constructor.call(this, SVG.create(type + 'Gradient'))

      // store type
      this.type = type
    },

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Add a color stop
      at: function (offset, color, opacity) {
        return this.put(new SVG.Stop()).update(offset, color, opacity)
      },
      // Update gradient
      update: function (block) {
      // remove all stops
        this.clear()

        // invoke passed block
        if (typeof block === 'function') { block.call(this, this) }

        return this
      },
      // Return the fill id
      fill: function () {
        return 'url(#' + this.id() + ')'
      },
      // Alias string convertion to fill
      toString: function () {
        return this.fill()
      },
      // custom attr to handle transform
      attr: function (a, b, c) {
        if (a == 'transform') a = 'gradientTransform'
        return SVG.Container.prototype.attr.call(this, a, b, c)
      }
    },

    // Add parent method
    construct: {
    // Create gradient element in defs
      gradient: function (type, block) {
        return this.defs().gradient(type, block)
      }
    }
  })

  // Add animatable methods to both gradient and fx module
  SVG.extend(SVG.Gradient, SVG.FX, {
  // From position
    from: function (x, y) {
      return (this._target || this).type == 'radial'
        ? this.attr({ fx: new SVG.Number(x), fy: new SVG.Number(y) })
        : this.attr({ x1: new SVG.Number(x), y1: new SVG.Number(y) })
    },
    // To position
    to: function (x, y) {
      return (this._target || this).type == 'radial'
        ? this.attr({ cx: new SVG.Number(x), cy: new SVG.Number(y) })
        : this.attr({ x2: new SVG.Number(x), y2: new SVG.Number(y) })
    }
  })

  // Base gradient generation
  SVG.extend(SVG.Defs, {
  // define gradient
    gradient: function (type, block) {
      return this.put(new SVG.Gradient(type)).update(block)
    }

  })

  SVG.Stop = SVG.invent({
  // Initialize node
    create: 'stop',

    // Inherit from
    inherit: SVG.Element,

    // Add class methods
    extend: {
    // add color stops
      update: function (o) {
        if (typeof o === 'number' || o instanceof SVG.Number) {
          o = {
            offset: arguments[0],
            color: arguments[1],
            opacity: arguments[2]
          }
        }

        // set attributes
        if (o.opacity != null) this.attr('stop-opacity', o.opacity)
        if (o.color != null) this.attr('stop-color', o.color)
        if (o.offset != null) this.attr('offset', new SVG.Number(o.offset))

        return this
      }
    }

  })

  SVG.Pattern = SVG.invent({
  // Initialize node
    create: 'pattern',

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Return the fill id
      fill: function () {
        return 'url(#' + this.id() + ')'
      },
      // Update pattern by rebuilding
      update: function (block) {
      // remove content
        this.clear()

        // invoke passed block
        if (typeof block === 'function') { block.call(this, this) }

        return this
      },
      // Alias string convertion to fill
      toString: function () {
        return this.fill()
      },
      // custom attr to handle transform
      attr: function (a, b, c) {
        if (a == 'transform') a = 'patternTransform'
        return SVG.Container.prototype.attr.call(this, a, b, c)
      }

    },

    // Add parent method
    construct: {
    // Create pattern element in defs
      pattern: function (width, height, block) {
        return this.defs().pattern(width, height, block)
      }
    }
  })

  SVG.extend(SVG.Defs, {
  // Define gradient
    pattern: function (width, height, block) {
      return this.put(new SVG.Pattern()).update(block).attr({
        x: 0,
        y: 0,
        width: width,
        height: height,
        patternUnits: 'userSpaceOnUse'
      })
    }

  })
  SVG.Shape = SVG.invent({
  // Initialize node
    create: function (element) {
      this.constructor.call(this, element)
    },

    // Inherit from
    inherit: SVG.Element

  })

  SVG.Bare = SVG.invent({
  // Initialize
    create: function (element, inherit) {
    // construct element
      this.constructor.call(this, SVG.create(element))

      // inherit custom methods
      if (inherit) {
        for (var method in inherit.prototype) {
          if (typeof inherit.prototype[method] === 'function') { this[method] = inherit.prototype[method] }
        }
      }
    },

    // Inherit from
    inherit: SVG.Element,

    // Add methods
    extend: {
    // Insert some plain text
      words: function (text) {
      // remove contents
        while (this.node.hasChildNodes()) { this.node.removeChild(this.node.lastChild) }

        // create text node
        this.node.appendChild(document.createTextNode(text))

        return this
      }
    }
  })

  SVG.extend(SVG.Parent, {
  // Create an element that is not described by SVG.js
    element: function (element, inherit) {
      return this.put(new SVG.Bare(element, inherit))
    }
  })

  SVG.Symbol = SVG.invent({
  // Initialize node
    create: 'symbol',

    // Inherit from
    inherit: SVG.Container,

    construct: {
    // create symbol
      symbol: function () {
        return this.put(new SVG.Symbol())
      }
    }
  })

  SVG.Use = SVG.invent({
  // Initialize node
    create: 'use',

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // Use element as a reference
      element: function (element, file) {
      // Set lined element
        return this.attr('href', (file || '') + '#' + element, SVG.xlink)
      }
    },

    // Add parent method
    construct: {
    // Create a use element
      use: function (element, file) {
        return this.put(new SVG.Use()).element(element, file)
      }
    }
  })
  SVG.Rect = SVG.invent({
  // Initialize node
    create: 'rect',

    // Inherit from
    inherit: SVG.Shape,

    // Add parent method
    construct: {
    // Create a rect element
      rect: function (width, height) {
        return this.put(new SVG.Rect()).size(width, height)
      }
    }
  })
  SVG.Circle = SVG.invent({
  // Initialize node
    create: 'circle',

    // Inherit from
    inherit: SVG.Shape,

    // Add parent method
    construct: {
    // Create circle element, based on ellipse
      circle: function (size) {
        return this.put(new SVG.Circle()).rx(new SVG.Number(size).divide(2)).move(0, 0)
      }
    }
  })

  SVG.extend(SVG.Circle, SVG.FX, {
  // Radius x value
    rx: function (rx) {
      return this.attr('r', rx)
    },
    // Alias radius x value
    ry: function (ry) {
      return this.rx(ry)
    }
  })

  SVG.Ellipse = SVG.invent({
  // Initialize node
    create: 'ellipse',

    // Inherit from
    inherit: SVG.Shape,

    // Add parent method
    construct: {
    // Create an ellipse
      ellipse: function (width, height) {
        return this.put(new SVG.Ellipse()).size(width, height).move(0, 0)
      }
    }
  })

  SVG.extend(SVG.Ellipse, SVG.Rect, SVG.FX, {
  // Radius x value
    rx: function (rx) {
      return this.attr('rx', rx)
    },
    // Radius y value
    ry: function (ry) {
      return this.attr('ry', ry)
    }
  })

  // Add common method
  SVG.extend(SVG.Circle, SVG.Ellipse, {
    // Move over x-axis
    x: function (x) {
      return x == null ? this.cx() - this.rx() : this.cx(x + this.rx())
    },
    // Move over y-axis
    y: function (y) {
      return y == null ? this.cy() - this.ry() : this.cy(y + this.ry())
    },
    // Move by center over x-axis
    cx: function (x) {
      return x == null ? this.attr('cx') : this.attr('cx', x)
    },
    // Move by center over y-axis
    cy: function (y) {
      return y == null ? this.attr('cy') : this.attr('cy', y)
    },
    // Set width of element
    width: function (width) {
      return width == null ? this.rx() * 2 : this.rx(new SVG.Number(width).divide(2))
    },
    // Set height of element
    height: function (height) {
      return height == null ? this.ry() * 2 : this.ry(new SVG.Number(height).divide(2))
    },
    // Custom size function
    size: function (width, height) {
      var p = proportionalSize(this, width, height)

      return this
        .rx(new SVG.Number(p.width).divide(2))
        .ry(new SVG.Number(p.height).divide(2))
    }
  })
  SVG.Line = SVG.invent({
  // Initialize node
    create: 'line',

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // Get array
      array: function () {
        return new SVG.PointArray([
          [ this.attr('x1'), this.attr('y1') ],
          [ this.attr('x2'), this.attr('y2') ]
        ])
      },
      // Overwrite native plot() method
      plot: function (x1, y1, x2, y2) {
        if (x1 == null) { return this.array() } else if (typeof y1 !== 'undefined') { x1 = { x1: x1, y1: y1, x2: x2, y2: y2 } } else { x1 = new SVG.PointArray(x1).toLine() }

        return this.attr(x1)
      },
      // Move by left top corner
      move: function (x, y) {
        return this.attr(this.array().move(x, y).toLine())
      },
      // Set element size to given width and height
      size: function (width, height) {
        var p = proportionalSize(this, width, height)

        return this.attr(this.array().size(p.width, p.height).toLine())
      }
    },

    // Add parent method
    construct: {
    // Create a line element
      line: function (x1, y1, x2, y2) {
      // make sure plot is called as a setter
      // x1 is not necessarily a number, it can also be an array, a string and a SVG.PointArray
        return SVG.Line.prototype.plot.apply(
          this.put(new SVG.Line())
          , x1 != null ? [x1, y1, x2, y2] : [0, 0, 0, 0]
        )
      }
    }
  })

  SVG.Polyline = SVG.invent({
  // Initialize node
    create: 'polyline',

    // Inherit from
    inherit: SVG.Shape,

    // Add parent method
    construct: {
    // Create a wrapped polyline element
      polyline: function (p) {
      // make sure plot is called as a setter
        return this.put(new SVG.Polyline()).plot(p || new SVG.PointArray())
      }
    }
  })

  SVG.Polygon = SVG.invent({
  // Initialize node
    create: 'polygon',

    // Inherit from
    inherit: SVG.Shape,

    // Add parent method
    construct: {
    // Create a wrapped polygon element
      polygon: function (p) {
      // make sure plot is called as a setter
        return this.put(new SVG.Polygon()).plot(p || new SVG.PointArray())
      }
    }
  })

  // Add polygon-specific functions
  SVG.extend(SVG.Polyline, SVG.Polygon, {
  // Get array
    array: function () {
      return this._array || (this._array = new SVG.PointArray(this.attr('points')))
    },
    // Plot new path
    plot: function (p) {
      return (p == null)
        ? this.array()
        : this.clear().attr('points', typeof p === 'string' ? p : (this._array = new SVG.PointArray(p)))
    },
    // Clear array cache
    clear: function () {
      delete this._array
      return this
    },
    // Move by left top corner
    move: function (x, y) {
      return this.attr('points', this.array().move(x, y))
    },
    // Set element size to given width and height
    size: function (width, height) {
      var p = proportionalSize(this, width, height)

      return this.attr('points', this.array().size(p.width, p.height))
    }

  })

  // unify all point to point elements
  SVG.extend(SVG.Line, SVG.Polyline, SVG.Polygon, {
  // Define morphable array
    morphArray: SVG.PointArray,
    // Move by left top corner over x-axis
    x: function (x) {
      return x == null ? this.bbox().x : this.move(x, this.bbox().y)
    },
    // Move by left top corner over y-axis
    y: function (y) {
      return y == null ? this.bbox().y : this.move(this.bbox().x, y)
    },
    // Set width of element
    width: function (width) {
      var b = this.bbox()

      return width == null ? b.width : this.size(width, b.height)
    },
    // Set height of element
    height: function (height) {
      var b = this.bbox()

      return height == null ? b.height : this.size(b.width, height)
    }
  })
  SVG.Path = SVG.invent({
  // Initialize node
    create: 'path',

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // Define morphable array
      morphArray: SVG.PathArray,
      // Get array
      array: function () {
        return this._array || (this._array = new SVG.PathArray(this.attr('d')))
      },
      // Plot new path
      plot: function (d) {
        return (d == null)
          ? this.array()
          : this.clear().attr('d', typeof d === 'string' ? d : (this._array = new SVG.PathArray(d)))
      },
      // Clear array cache
      clear: function () {
        delete this._array
        return this
      },
      // Move by left top corner
      move: function (x, y) {
        return this.attr('d', this.array().move(x, y))
      },
      // Move by left top corner over x-axis
      x: function (x) {
        return x == null ? this.bbox().x : this.move(x, this.bbox().y)
      },
      // Move by left top corner over y-axis
      y: function (y) {
        return y == null ? this.bbox().y : this.move(this.bbox().x, y)
      },
      // Set element size to given width and height
      size: function (width, height) {
        var p = proportionalSize(this, width, height)

        return this.attr('d', this.array().size(p.width, p.height))
      },
      // Set width of element
      width: function (width) {
        return width == null ? this.bbox().width : this.size(width, this.bbox().height)
      },
      // Set height of element
      height: function (height) {
        return height == null ? this.bbox().height : this.size(this.bbox().width, height)
      }

    },

    // Add parent method
    construct: {
    // Create a wrapped path element
      path: function (d) {
      // make sure plot is called as a setter
        return this.put(new SVG.Path()).plot(d || new SVG.PathArray())
      }
    }
  })

  SVG.Image = SVG.invent({
  // Initialize node
    create: 'image',

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // (re)load image
      load: function (url) {
        if (!url) return this

        var self = this,
          img = new window.Image()

        // preload image
        SVG.on(img, 'load', function () {
          SVG.off(img)

          var p = self.parent(SVG.Pattern)

          if (p === null) return

          // ensure image size
          if (self.width() == 0 && self.height() == 0) { self.size(img.width, img.height) }

          // ensure pattern size if not set
          if (p && p.width() == 0 && p.height() == 0) { p.size(self.width(), self.height()) }

          // callback
          if (typeof self._loaded === 'function') {
            self._loaded.call(self, {
              width: img.width,
              height: img.height,
              ratio: img.width / img.height,
              url: url
            })
          }
        })

        SVG.on(img, 'error', function (e) {
          SVG.off(img)

          if (typeof self._error === 'function') {
            self._error.call(self, e)
          }
        })

        return this.attr('href', (img.src = this.src = url), SVG.xlink)
      },
      // Add loaded callback
      loaded: function (loaded) {
        this._loaded = loaded
        return this
      },

      error: function (error) {
        this._error = error
        return this
      }
    },

    // Add parent method
    construct: {
    // create image element, load image and set its size
      image: function (source, width, height) {
        return this.put(new SVG.Image()).load(source).size(width || 0, height || width || 0)
      }
    }

  })
  SVG.Text = SVG.invent({
  // Initialize node
    create: function () {
      this.constructor.call(this, SVG.create('text'))

      this.dom.leading = new SVG.Number(1.3) // store leading value for rebuilding
      this._rebuild = true // enable automatic updating of dy values
      this._build = false // disable build mode for adding multiple lines

      // set default font
      this.attr('font-family', SVG.defaults.attrs['font-family'])
    },

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // Move over x-axis
      x: function (x) {
      // act as getter
        if (x == null) { return this.attr('x') }

        return this.attr('x', x)
      },
      // Move over y-axis
      y: function (y) {
        var oy = this.attr('y'),
          o = typeof oy === 'number' ? oy - this.bbox().y : 0

        // act as getter
        if (y == null) { return typeof oy === 'number' ? oy - o : oy }

        return this.attr('y', typeof y.valueOf() === 'number' ? y + o : y)
      },
      // Move center over x-axis
      cx: function (x) {
        return x == null ? this.bbox().cx : this.x(x - this.bbox().width / 2)
      },
      // Move center over y-axis
      cy: function (y) {
        return y == null ? this.bbox().cy : this.y(y - this.bbox().height / 2)
      },
      // Set the text content
      text: function (text) {
      // act as getter
        if (typeof text === 'undefined') {
          var text = ''
          var children = this.node.childNodes
          for (var i = 0, len = children.length; i < len; ++i) {
          // add newline if its not the first child and newLined is set to true
            if (i != 0 && children[i].nodeType != 3 && SVG.adopt(children[i]).dom.newLined == true) {
              text += '\n'
            }

            // add content of this node
            text += children[i].textContent
          }

          return text
        }

        // remove existing content
        this.clear().build(true)

        if (typeof text === 'function') {
        // call block
          text.call(this, this)
        } else {
        // store text and make sure text is not blank
          text = text.split('\n')

          // build new lines
          for (var i = 0, il = text.length; i < il; i++) { this.tspan(text[i]).newLine() }
        }

        // disable build mode and rebuild lines
        return this.build(false).rebuild()
      },
      // Set font size
      size: function (size) {
        return this.attr('font-size', size).rebuild()
      },
      // Set / get leading
      leading: function (value) {
      // act as getter
        if (value == null) { return this.dom.leading }

        // act as setter
        this.dom.leading = new SVG.Number(value)

        return this.rebuild()
      },
      // Get all the first level lines
      lines: function () {
        var node = (this.textPath && this.textPath() || this).node

        // filter tspans and map them to SVG.js instances
        var lines = SVG.utils.map(SVG.utils.filterSVGElements(node.childNodes), function (el) {
          return SVG.adopt(el)
        })

        // return an instance of SVG.set
        return new SVG.Set(lines)
      },
      // Rebuild appearance type
      rebuild: function (rebuild) {
      // store new rebuild flag if given
        if (typeof rebuild === 'boolean') { this._rebuild = rebuild }

        // define position of all lines
        if (this._rebuild) {
          var self = this,
            blankLineOffset = 0,
            dy = this.dom.leading * new SVG.Number(this.attr('font-size'))

          this.lines().each(function () {
            if (this.dom.newLined) {
              if (!self.textPath()) { this.attr('x', self.attr('x')) }
              if (this.text() == '\n') {
                blankLineOffset += dy
              } else {
                this.attr('dy', dy + blankLineOffset)
                blankLineOffset = 0
              }
            }
          })

          this.fire('rebuild')
        }

        return this
      },
      // Enable / disable build mode
      build: function (build) {
        this._build = !!build
        return this
      },
      // overwrite method from parent to set data properly
      setData: function (o) {
        this.dom = o
        this.dom.leading = new SVG.Number(o.leading || 1.3)
        return this
      }
    },

    // Add parent method
    construct: {
    // Create text element
      text: function (text) {
        return this.put(new SVG.Text()).text(text)
      },
      // Create plain text element
      plain: function (text) {
        return this.put(new SVG.Text()).plain(text)
      }
    }

  })

  SVG.Tspan = SVG.invent({
  // Initialize node
    create: 'tspan',

    // Inherit from
    inherit: SVG.Shape,

    // Add class methods
    extend: {
    // Set text content
      text: function (text) {
        if (text == null) return this.node.textContent + (this.dom.newLined ? '\n' : '')

        typeof text === 'function' ? text.call(this, this) : this.plain(text)

        return this
      },
      // Shortcut dx
      dx: function (dx) {
        return this.attr('dx', dx)
      },
      // Shortcut dy
      dy: function (dy) {
        return this.attr('dy', dy)
      },
      // Create new line
      newLine: function () {
      // fetch text parent
        var t = this.parent(SVG.Text)

        // mark new line
        this.dom.newLined = true

        // apply new hy¡n
        return this.dy(t.dom.leading * t.attr('font-size')).attr('x', t.x())
      }
    }

  })

  SVG.extend(SVG.Text, SVG.Tspan, {
  // Create plain text node
    plain: function (text) {
    // clear if build mode is disabled
      if (this._build === false) { this.clear() }

      // create text node
      this.node.appendChild(document.createTextNode(text))

      return this
    },
    // Create a tspan
    tspan: function (text) {
      var node = (this.textPath && this.textPath() || this).node,
        tspan = new SVG.Tspan()

      // clear if build mode is disabled
      if (this._build === false) { this.clear() }

      // add new tspan
      node.appendChild(tspan.node)

      return tspan.text(text)
    },
    // Clear all lines
    clear: function () {
      var node = (this.textPath && this.textPath() || this).node

      // remove existing child nodes
      while (node.hasChildNodes()) { node.removeChild(node.lastChild) }

      return this
    },
    // Get length of text element
    length: function () {
      return this.node.getComputedTextLength()
    }
  })

  SVG.TextPath = SVG.invent({
  // Initialize node
    create: 'textPath',

    // Inherit from
    inherit: SVG.Parent,

    // Define parent class
    parent: SVG.Text,

    // Add parent method
    construct: {
      morphArray: SVG.PathArray,
      // Create path for text to run on
      path: function (d) {
      // create textPath element
        var path = new SVG.TextPath(),
          track = this.doc().defs().path(d)

        // move lines to textpath
        while (this.node.hasChildNodes()) { path.node.appendChild(this.node.firstChild) }

        // add textPath element as child node
        this.node.appendChild(path.node)

        // link textPath to path and add content
        path.attr('href', '#' + track, SVG.xlink)

        return this
      },
      // return the array of the path track element
      array: function () {
        var track = this.track()

        return track ? track.array() : null
      },
      // Plot path if any
      plot: function (d) {
        var track = this.track(),
          pathArray = null

        if (track) {
          pathArray = track.plot(d)
        }

        return (d == null) ? pathArray : this
      },
      // Get the path track element
      track: function () {
        var path = this.textPath()

        if (path) { return path.reference('href') }
      },
      // Get the textPath child
      textPath: function () {
        if (this.node.firstChild && this.node.firstChild.nodeName == 'textPath') { return SVG.adopt(this.node.firstChild) }
      }
    }
  })

  SVG.Nested = SVG.invent({
  // Initialize node
    create: function () {
      this.constructor.call(this, SVG.create('svg'))

      this.style('overflow', 'visible')
    },

    // Inherit from
    inherit: SVG.Container,

    // Add parent method
    construct: {
    // Create nested svg document
      nested: function () {
        return this.put(new SVG.Nested())
      }
    }
  })
  SVG.A = SVG.invent({
  // Initialize node
    create: 'a',

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Link url
      to: function (url) {
        return this.attr('href', url, SVG.xlink)
      },
      // Link show attribute
      show: function (target) {
        return this.attr('show', target, SVG.xlink)
      },
      // Link target attribute
      target: function (target) {
        return this.attr('target', target)
      }
    },

    // Add parent method
    construct: {
    // Create a hyperlink element
      link: function (url) {
        return this.put(new SVG.A()).to(url)
      }
    }
  })

  SVG.extend(SVG.Element, {
  // Create a hyperlink element
    linkTo: function (url) {
      var link = new SVG.A()

      if (typeof url === 'function') { url.call(link, link) } else { link.to(url) }

      return this.parent().put(link).put(this)
    }

  })
  SVG.Marker = SVG.invent({
  // Initialize node
    create: 'marker',

    // Inherit from
    inherit: SVG.Container,

    // Add class methods
    extend: {
    // Set width of element
      width: function (width) {
        return this.attr('markerWidth', width)
      },
      // Set height of element
      height: function (height) {
        return this.attr('markerHeight', height)
      },
      // Set marker refX and refY
      ref: function (x, y) {
        return this.attr('refX', x).attr('refY', y)
      },
      // Update marker
      update: function (block) {
      // remove all content
        this.clear()

        // invoke passed block
        if (typeof block === 'function') { block.call(this, this) }

        return this
      },
      // Return the fill id
      toString: function () {
        return 'url(#' + this.id() + ')'
      }
    },

    // Add parent method
    construct: {
      marker: function (width, height, block) {
      // Create marker element in defs
        return this.defs().marker(width, height, block)
      }
    }

  })

  SVG.extend(SVG.Defs, {
  // Create marker
    marker: function (width, height, block) {
    // Set default viewbox to match the width and height, set ref to cx and cy and set orient to auto
      return this.put(new SVG.Marker())
        .size(width, height)
        .ref(width / 2, height / 2)
        .viewbox(0, 0, width, height)
        .attr('orient', 'auto')
        .update(block)
    }

  })

  SVG.extend(SVG.Line, SVG.Polyline, SVG.Polygon, SVG.Path, {
  // Create and attach markers
    marker: function (marker, width, height, block) {
      var attr = ['marker']

      // Build attribute name
      if (marker != 'all') attr.push(marker)
      attr = attr.join('-')

      // Set marker attribute
      marker = arguments[1] instanceof SVG.Marker
        ? arguments[1]
        : this.doc().marker(width, height, block)

      return this.attr(attr, marker)
    }

  })
  // Define list of available attributes for stroke and fill
  var sugar = {
    stroke: ['color', 'width', 'opacity', 'linecap', 'linejoin', 'miterlimit', 'dasharray', 'dashoffset'],
    fill: ['color', 'opacity', 'rule'],
    prefix: function (t, a) {
      return a == 'color' ? t : t + '-' + a
    }
  }

// Add sugar for fill and stroke
;['fill', 'stroke'].forEach(function (m) {
    var i, extension = {}

    extension[m] = function (o) {
      if (typeof o === 'undefined') { return this }
      if (typeof o === 'string' || SVG.Color.isRgb(o) || (o && typeof o.fill === 'function')) { this.attr(m, o) } else
      // set all attributes from sugar.fill and sugar.stroke list
      {
        for (i = sugar[m].length - 1; i >= 0; i--) {
          if (o[sugar[m][i]] != null) { this.attr(sugar.prefix(m, sugar[m][i]), o[sugar[m][i]]) }
        }
      }

      return this
    }

    SVG.extend(SVG.Element, SVG.FX, extension)
  })

  SVG.extend(SVG.Element, SVG.FX, {
  // Map rotation to transform
    rotate: function (d, cx, cy) {
      return this.transform({ rotation: d, cx: cx, cy: cy })
    },
    // Map skew to transform
    skew: function (x, y, cx, cy) {
      return arguments.length == 1 || arguments.length == 3
        ? this.transform({ skew: x, cx: y, cy: cx })
        : this.transform({ skewX: x, skewY: y, cx: cx, cy: cy })
    },
    // Map scale to transform
    scale: function (x, y, cx, cy) {
      return arguments.length == 1 || arguments.length == 3
        ? this.transform({ scale: x, cx: y, cy: cx })
        : this.transform({ scaleX: x, scaleY: y, cx: cx, cy: cy })
    },
    // Map translate to transform
    translate: function (x, y) {
      return this.transform({ x: x, y: y })
    },
    // Map flip to transform
    flip: function (a, o) {
      o = typeof a === 'number' ? a : o
      return this.transform({ flip: a || 'both', offset: o })
    },
    // Map matrix to transform
    matrix: function (m) {
      return this.attr('transform', new SVG.Matrix(arguments.length == 6 ? [].slice.call(arguments) : m))
    },
    // Opacity
    opacity: function (value) {
      return this.attr('opacity', value)
    },
    // Relative move over x axis
    dx: function (x) {
      return this.x(new SVG.Number(x).plus(this instanceof SVG.FX ? 0 : this.x()), true)
    },
    // Relative move over y axis
    dy: function (y) {
      return this.y(new SVG.Number(y).plus(this instanceof SVG.FX ? 0 : this.y()), true)
    },
    // Relative move over x and y axes
    dmove: function (x, y) {
      return this.dx(x).dy(y)
    }
  })

  SVG.extend(SVG.Rect, SVG.Ellipse, SVG.Circle, SVG.Gradient, SVG.FX, {
  // Add x and y radius
    radius: function (x, y) {
      var type = (this._target || this).type
      return type == 'radial' || type == 'circle'
        ? this.attr('r', new SVG.Number(x))
        : this.rx(x).ry(y == null ? x : y)
    }
  })

  SVG.extend(SVG.Path, {
  // Get path length
    length: function () {
      return this.node.getTotalLength()
    },
    // Get point at length
    pointAt: function (length) {
      return this.node.getPointAtLength(length)
    }
  })

  SVG.extend(SVG.Parent, SVG.Text, SVG.Tspan, SVG.FX, {
  // Set font
    font: function (a, v) {
      if (typeof a === 'object') {
        for (v in a) this.font(v, a[v])
      }

      return a == 'leading'
        ? this.leading(v)
        : a == 'anchor'
          ? this.attr('text-anchor', v)
          : a == 'size' || a == 'family' || a == 'weight' || a == 'stretch' || a == 'variant' || a == 'style'
            ? this.attr('font-' + a, v)
            : this.attr(a, v)
    }
  })

  SVG.Set = SVG.invent({
  // Initialize
    create: function (members) {
    // Set initial state
      Array.isArray(members) ? this.members = members : this.clear()
    },

    // Add class methods
    extend: {
    // Add element to set
      add: function () {
        var i, il, elements = [].slice.call(arguments)

        for (i = 0, il = elements.length; i < il; i++) { this.members.push(elements[i]) }

        return this
      },
      // Remove element from set
      remove: function (element) {
        var i = this.index(element)

        // remove given child
        if (i > -1) { this.members.splice(i, 1) }

        return this
      },
      // Iterate over all members
      each: function (block) {
        for (var i = 0, il = this.members.length; i < il; i++) { block.apply(this.members[i], [i, this.members]) }

        return this
      },
      // Restore to defaults
      clear: function () {
      // initialize store
        this.members = []

        return this
      },
      // Get the length of a set
      length: function () {
        return this.members.length
      },
      // Checks if a given element is present in set
      has: function (element) {
        return this.index(element) >= 0
      },
      // retuns index of given element in set
      index: function (element) {
        return this.members.indexOf(element)
      },
      // Get member at given index
      get: function (i) {
        return this.members[i]
      },
      // Get first member
      first: function () {
        return this.get(0)
      },
      // Get last member
      last: function () {
        return this.get(this.members.length - 1)
      },
      // Default value
      valueOf: function () {
        return this.members
      },
      // Get the bounding box of all members included or empty box if set has no items
      bbox: function () {
      // return an empty box of there are no members
        if (this.members.length == 0) { return new SVG.RBox() }

        // get the first rbox and update the target bbox
        var rbox = this.members[0].rbox(this.members[0].doc())

        this.each(function () {
        // user rbox for correct position and visual representation
          rbox = rbox.merge(this.rbox(this.doc()))
        })

        return rbox
      }
    },

    // Add parent method
    construct: {
    // Create a new set
      set: function (members) {
        return new SVG.Set(members)
      }
    }
  })

  SVG.FX.Set = SVG.invent({
  // Initialize node
    create: function (set) {
    // store reference to set
      this.set = set
    }

  })

  // Alias methods
  SVG.Set.inherit = function () {
    var m,
      methods = []

    // gather shape methods
    for (var m in SVG.Shape.prototype) {
      if (typeof SVG.Shape.prototype[m] === 'function' && typeof SVG.Set.prototype[m] !== 'function') { methods.push(m) }
    }

    // apply shape aliasses
    methods.forEach(function (method) {
      SVG.Set.prototype[method] = function () {
        for (var i = 0, il = this.members.length; i < il; i++) {
          if (this.members[i] && typeof this.members[i][method] === 'function') { this.members[i][method].apply(this.members[i], arguments) }
        }

        return method == 'animate' ? (this.fx || (this.fx = new SVG.FX.Set(this))) : this
      }
    })

    // clear methods for the next round
    methods = []

    // gather fx methods
    for (var m in SVG.FX.prototype) {
      if (typeof SVG.FX.prototype[m] === 'function' && typeof SVG.FX.Set.prototype[m] !== 'function') { methods.push(m) }
    }

    // apply fx aliasses
    methods.forEach(function (method) {
      SVG.FX.Set.prototype[method] = function () {
        for (var i = 0, il = this.set.members.length; i < il; i++) { this.set.members[i].fx[method].apply(this.set.members[i].fx, arguments) }

        return this
      }
    })
  }

  SVG.extend(SVG.Element, {
  // Store data values on svg nodes
    data: function (a, v, r) {
      if (typeof a === 'object') {
        for (v in a) { this.data(v, a[v]) }
      } else if (arguments.length < 2) {
        try {
          return JSON.parse(this.attr('data-' + a))
        } catch (e) {
          return this.attr('data-' + a)
        }
      } else {
        this.attr(
          'data-' + a
          , v === null
            ? null
            : r === true || typeof v === 'string' || typeof v === 'number'
              ? v
              : JSON.stringify(v)
        )
      }

      return this
    }
  })
  SVG.extend(SVG.Element, {
  // Remember arbitrary data
    remember: function (k, v) {
    // remember every item in an object individually
      if (typeof arguments[0] === 'object') {
        for (var v in k) { this.remember(v, k[v]) }
      }

      // retrieve memory
      else if (arguments.length == 1) { return this.memory()[k] }

      // store memory
      else { this.memory()[k] = v }

      return this
    },

    // Erase a given memory
    forget: function () {
      if (arguments.length == 0) { this._memory = {} } else {
        for (var i = arguments.length - 1; i >= 0; i--) { delete this.memory()[arguments[i]] }
      }

      return this
    },

    // Initialize or return local memory object
    memory: function () {
      return this._memory || (this._memory = {})
    }

  })
  // Method for getting an element by id
  SVG.get = function (id) {
    var node = document.getElementById(idFromReference(id) || id)
    return SVG.adopt(node)
  }

  // Select elements by query string
  SVG.select = function (query, parent) {
    return new SVG.Set(
      SVG.utils.map((parent || document).querySelectorAll(query), function (node) {
        return SVG.adopt(node)
      })
    )
  }

  SVG.extend(SVG.Parent, {
  // Scoped select method
    select: function (query) {
      return SVG.select(query, this.node)
    }

  })
  function pathRegReplace (a, b, c, d) {
    return c + d.replace(SVG.regex.dots, ' .')
  }

  // creates deep clone of array
  function array_clone (arr) {
    var clone = arr.slice(0)
    for (var i = clone.length; i--;) {
      if (Array.isArray(clone[i])) {
        clone[i] = array_clone(clone[i])
      }
    }
    return clone
  }

  // tests if a given element is instance of an object
  function is (el, obj) {
    return el instanceof obj
  }

  // tests if a given selector matches an element
  function matches (el, selector) {
    return (el.matches || el.matchesSelector || el.msMatchesSelector || el.mozMatchesSelector || el.webkitMatchesSelector || el.oMatchesSelector).call(el, selector)
  }

  // Convert dash-separated-string to camelCase
  function camelCase (s) {
    return s.toLowerCase().replace(/-(.)/g, function (m, g) {
      return g.toUpperCase()
    })
  }

  // Capitalize first letter of a string
  function capitalize (s) {
    return s.charAt(0).toUpperCase() + s.slice(1)
  }

  // Ensure to six-based hex
  function fullHex (hex) {
    return hex.length == 4
      ? [ '#',
        hex.substring(1, 2), hex.substring(1, 2),
        hex.substring(2, 3), hex.substring(2, 3),
        hex.substring(3, 4), hex.substring(3, 4)
      ].join('') : hex
  }

  // Component to hex value
  function compToHex (comp) {
    var hex = comp.toString(16)
    return hex.length == 1 ? '0' + hex : hex
  }

  // Calculate proportional width and height values when necessary
  function proportionalSize (element, width, height) {
    if (width == null || height == null) {
      var box = element.bbox()

      if (width == null) { width = box.width / box.height * height } else if (height == null) { height = box.height / box.width * width }
    }

    return {
      width: width,
      height: height
    }
  }

  // Delta transform point
  function deltaTransformPoint (matrix, x, y) {
    return {
      x: x * matrix.a + y * matrix.c + 0,
      y: x * matrix.b + y * matrix.d + 0
    }
  }

  // Map matrix array to object
  function arrayToMatrix (a) {
    return { a: a[0], b: a[1], c: a[2], d: a[3], e: a[4], f: a[5] }
  }

  // Parse matrix if required
  function parseMatrix (matrix) {
    if (!(matrix instanceof SVG.Matrix)) { matrix = new SVG.Matrix(matrix) }

    return matrix
  }

  // Add centre point to transform object
  function ensureCentre (o, target) {
    o.cx = o.cx == null ? target.bbox().cx : o.cx
    o.cy = o.cy == null ? target.bbox().cy : o.cy
  }

  // PathArray Helpers
  function arrayToString (a) {
    for (var i = 0, il = a.length, s = ''; i < il; i++) {
      s += a[i][0]

      if (a[i][1] != null) {
        s += a[i][1]

        if (a[i][2] != null) {
          s += ' '
          s += a[i][2]

          if (a[i][3] != null) {
            s += ' '
            s += a[i][3]
            s += ' '
            s += a[i][4]

            if (a[i][5] != null) {
              s += ' '
              s += a[i][5]
              s += ' '
              s += a[i][6]

              if (a[i][7] != null) {
                s += ' '
                s += a[i][7]
              }
            }
          }
        }
      }
    }

    return s + ' '
  }

  // Deep new id assignment
  function assignNewId (node) {
  // do the same for SVG child nodes as well
    for (var i = node.childNodes.length - 1; i >= 0; i--) {
      if (node.childNodes[i] instanceof window.SVGElement) { assignNewId(node.childNodes[i]) }
    }

    return SVG.adopt(node).id(SVG.eid(node.nodeName))
  }

  // Add more bounding box properties
  function fullBox (b) {
    if (b.x == null) {
      b.x = 0
      b.y = 0
      b.width = 0
      b.height = 0
    }

    b.w = b.width
    b.h = b.height
    b.x2 = b.x + b.width
    b.y2 = b.y + b.height
    b.cx = b.x + b.width / 2
    b.cy = b.y + b.height / 2

    return b
  }

  // Get id from reference string
  function idFromReference (url) {
    var m = (url || '').toString().match(SVG.regex.reference)

    if (m) return m[1]
  }

  // If values like 1e-88 are passed, this is not a valid 32 bit float,
  // but in those cases, we are so close to 0 that 0 works well!
  function float32String (v) {
    return Math.abs(v) > 1e-37 ? v : 0
  }

  // Create matrix array for looping
  var abcdef = 'abcdef'.split('')

  // Add CustomEvent to IE9 and IE10
  if (typeof window.CustomEvent !== 'function') {
  // Code from: https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent
    var CustomEventPoly = function (event, options) {
      options = options || { bubbles: false, cancelable: false, detail: undefined }
      var e = document.createEvent('CustomEvent')
      e.initCustomEvent(event, options.bubbles, options.cancelable, options.detail)
      return e
    }

    CustomEventPoly.prototype = window.Event.prototype

    SVG.CustomEvent = CustomEventPoly
  } else {
    SVG.CustomEvent = window.CustomEvent
  }

  // requestAnimationFrame / cancelAnimationFrame Polyfill with fallback based on Paul Irish
  (function (w) {
    var lastTime = 0
    var vendors = ['moz', 'webkit']

    for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
      w.requestAnimationFrame = w[vendors[x] + 'RequestAnimationFrame']
      w.cancelAnimationFrame = w[vendors[x] + 'CancelAnimationFrame'] ||
                              w[vendors[x] + 'CancelRequestAnimationFrame']
    }

    w.requestAnimationFrame = w.requestAnimationFrame ||
    function (callback) {
      var currTime = new Date().getTime()
      var timeToCall = Math.max(0, 16 - (currTime - lastTime))

      var id = w.setTimeout(function () {
        callback(currTime + timeToCall)
      }, timeToCall)

      lastTime = currTime + timeToCall
      return id
    }

    w.cancelAnimationFrame = w.cancelAnimationFrame || w.clearTimeout
  }(window))

  return SVG
}))
