text: /**
   * jsPDF Context2D PlugIn Copyright (c) 2014 Steven Spungin (TwelveTone LLC) steven@twelvetone.tv
   *
   * Licensed under the MIT License. http://opensource.org/licenses/mit-license
   */
  
  /**
   * This plugin mimics the HTML5 Canvas's context2d.
   *
   * The goal is to provide a way for current canvas implementations to print directly to a PDF.
   */
  
  /**
   * TODO implement stroke opacity (refactor from fill() method )
   * TODO transform angle and radii parameters
   */
  
  /**
   * require('jspdf.js'); require('lib/css_colors.js');
   */
  
  (function (jsPDFAPI) {
      'use strict';
  
      jsPDFAPI.events.push([
          'initialized', function () {
              this.context2d.pdf = this;
              this.context2d.internal.pdf = this;
              this.context2d.ctx = new context();
              this.context2d.ctxStack = [];
              this.context2d.path = [];
          }
      ]);
  
      jsPDFAPI.context2d = {
          pageWrapXEnabled: false,
          pageWrapYEnabled: false,
          pageWrapX: 9999999,
          pageWrapY: 9999999,
          ctx: new context(),
          f2: function (number) {
              return number.toFixed(2);
          },
  
          fillRect: function (x, y, w, h) {
              if (this._isFillTransparent()) {
                  return;
              }
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xRect = this._matrix_map_rect(this.ctx._transform, {x: x, y: y, w: w, h: h});
              this.pdf.rect(xRect.x, xRect.y, xRect.w, xRect.h, "f");
          },
  
          strokeRect: function (x, y, w, h) {
              if (this._isStrokeTransparent()) {
                  return;
              }
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xRect = this._matrix_map_rect(this.ctx._transform, {x: x, y: y, w: w, h: h});
              this.pdf.rect(xRect.x, xRect.y, xRect.w, xRect.h, "s");
          },
  
          clearRect: function (x, y, w, h) {
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xRect = this._matrix_map_rect(this.ctx._transform, {x: x, y: y, w: w, h: h});
              this.save();
              this.setFillStyle('#ffffff');
              //TODO This is hack to fill with white.
              this.pdf.rect(xRect.x, xRect.y, xRect.w, xRect.h, "f");
              this.restore();
          },
  
          save: function () {
              this.ctx._fontSize = this.pdf.internal.getFontSize();
              var ctx = new context();
              ctx.copy(this.ctx);
              this.ctxStack.push(this.ctx);
              this.ctx = ctx;
          },
  
          restore: function () {
              this.ctx = this.ctxStack.pop();
              this.setFillStyle(this.ctx.fillStyle);
              this.setStrokeStyle(this.ctx.strokeStyle);
              this.setFont(this.ctx.font);
              this.pdf.setFontSize(this.ctx._fontSize);
              this.setLineCap(this.ctx.lineCap);
              this.setLineWidth(this.ctx.lineWidth);
              this.setLineJoin(this.ctx.lineJoin);
          },
  
          rect: function (x, y, w, h) {
              this.moveTo(x, y);
              this.lineTo(x + w, y);
              this.lineTo(x + w, y + h);
              this.lineTo(x, y + h);
              this.lineTo(x, y); //TODO not needed
              this.closePath();
          },
  
          beginPath: function () {
              this.path = [];
          },
  
          closePath: function () {
              this.path.push({
                  type: 'close'
              });
          },
  
          _getRgba: function (style) {
              // get the decimal values of r, g, and b;
              var rgba = {};
  
              if (this.internal.rxTransparent.test(style)) {
                  rgba.r = 0;
                  rgba.g = 0;
                  rgba.b = 0;
                  rgba.a = 0;
              }
              else {
                  var m = this.internal.rxRgb.exec(style);
                  if (m != null) {
                      rgba.r = parseInt(m[1]);
                      rgba.g = parseInt(m[2]);
                      rgba.b = parseInt(m[3]);
                      rgba.a = 1;
                  } else {
                      m = this.internal.rxRgba.exec(style);
                      if (m != null) {
                          rgba.r = parseInt(m[1]);
                          rgba.g = parseInt(m[2]);
                          rgba.b = parseInt(m[3]);
                          rgba.a = parseFloat(m[4]);
                      } else {
                          rgba.a = 1;
                          if (style.charAt(0) != '#') {
                              style = CssColors.colorNameToHex(style);
                              if (!style) {
                                  style = '#000000';
                              }
                          } else {
                          }
  
                          if (style.length === 4) {
                              rgba.r = style.substring(1, 2);
                              rgba.r += r;
                              rgba.g = style.substring(2, 3);
                              rgba.g += g;
                              rgba.b = style.substring(3, 4);
                              rgba.b += b;
                          } else {
                              rgba.r = style.substring(1, 3);
                              rgba.g = style.substring(3, 5);
                              rgba.b = style.substring(5, 7);
                          }
                          rgba.r = parseInt(rgba.r, 16);
                          rgba.g = parseInt(rgba.g, 16);
                          rgba.b = parseInt(rgba.b, 16);
                      }
                  }
              }
              rgba.style = style;
              return rgba;
          },
  
          setFillStyle: function (style) {
              // get the decimal values of r, g, and b;
              var r, g, b, a;
  
              if (this.internal.rxTransparent.test(style)) {
                  r = 0;
                  g = 0;
                  b = 0;
                  a = 0;
              }
              else {
                  var m = this.internal.rxRgb.exec(style);
                  if (m != null) {
                      r = parseInt(m[1]);
                      g = parseInt(m[2]);
                      b = parseInt(m[3]);
                      a = 1;
                  } else {
                      m = this.internal.rxRgba.exec(style);
                      if (m != null) {
                          r = parseInt(m[1]);
                          g = parseInt(m[2]);
                          b = parseInt(m[3]);
                          a = parseFloat(m[4]);
                      } else {
                          a = 1;
                          if (style.charAt(0) != '#') {
                              style = CssColors.colorNameToHex(style);
                              if (!style) {
                                  style = '#000000';
                              }
                          } else {
                          }
  
                          if (style.length === 4) {
                              r = style.substring(1, 2);
                              r += r;
                              g = style.substring(2, 3);
                              g += g;
                              b = style.substring(3, 4);
                              b += b;
                          } else {
                              r = style.substring(1, 3);
                              g = style.substring(3, 5);
                              b = style.substring(5, 7);
                          }
                          r = parseInt(r, 16);
                          g = parseInt(g, 16);
                          b = parseInt(b, 16);
                      }
                  }
              }
  
              this.ctx.fillStyle = style;
              this.ctx._isFillTransparent = (a == 0);
              this.ctx._fillOpacity = a;
  
              this.pdf.setFillColor(r, g, b, {
                  a: a
              });
              this.pdf.setTextColor(r, g, b, {
                  a: a
              });
          },
  
          setStrokeStyle: function (style) {
              var rgba = this._getRgba(style);
  
              this.ctx.strokeStyle = rgba.style;
              this.ctx._isStrokeTransparent = (rgba.a == 0);
              this.ctx._strokeOpacity = rgba.a;
  
              //TODO jsPDF to handle rgba
              if (rgba.a === 0) {
                  this.pdf.setDrawColor(255, 255, 255);
              }
              else if (rgba.a === 1) {
                  this.pdf.setDrawColor(rgba.r, rgba.g, rgba.b);
              } else {
                  //this.pdf.setDrawColor(rgba.r, rgba.g, rgba.b, {a: rgba.a});
                  this.pdf.setDrawColor(rgba.r, rgba.g, rgba.b);
              }
          },
  
          fillText: function (text, x, y, maxWidth) {
              if (this._isFillTransparent()) {
                  return;
              }
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
              var rads = this._matrix_rotation(this.ctx._transform);
              var degs = rads * 57.2958;
  
  
              //TODO only push the clip if it has not been applied to the current PDF context
              if (this.ctx._clip_path.length > 0) {
                  var lines;
                  if (window.outIntercept) {
                      lines = window.outIntercept.type === 'group' ? window.outIntercept.stream : window.outIntercept;
                  } else {
                      lines = this.pdf.internal.pages[1];
                  }
                  lines.push("q");
                  var origPath = this.path;
                  this.path = this.ctx._clip_path;
                  this.ctx._clip_path = [];
                  this._fill(null, true);
                  this.ctx._clip_path = this.path;
                  this.path = origPath;
              }
  
              this.pdf.text(text, x, this._getBaseline(y), null, degs);
  
              if (this.ctx._clip_path.length > 0) {
                  lines.push('Q');
              }
          },
  
          strokeText: function (text, x, y, maxWidth) {
              if (this._isStrokeTransparent()) {
                  return;
              }
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
              var rads = this._matrix_rotation(this.ctx._transform);
              var degs = rads * 57.2958;
  
  
              //TODO only push the clip if it has not been applied to the current PDF context
              if (this.ctx._clip_path.length > 0) {
                  var lines;
                  if (window.outIntercept) {
                      lines = window.outIntercept.type === 'group' ? window.outIntercept.stream : window.outIntercept;
                  } else {
                      lines = this.pdf.internal.pages[1];
                  }
                  lines.push("q");
                  var origPath = this.path;
                  this.path = this.ctx._clip_path;
                  this.ctx._clip_path = [];
                  this._fill(null, true);
                  this.ctx._clip_path = this.path;
                  this.path = origPath;
              }
  
              this.pdf.text(text, x, this._getBaseline(y), {
                  stroke: true
              }, degs);
  
              if (this.ctx._clip_path.length > 0) {
                  lines.push('Q');
              }
  
          },
  
          setFont: function (font) {
              this.ctx.font = font;
  
              //var rx = /\s*(\w+)\s+(\w+)\s+(\w+)\s+([\d\.]+)(px|pt|em)\s+["']?(\w+)['"]?/;
              var rx = /\s*(\w+)\s+(\w+)\s+(\w+)\s+([\d\.]+)(px|pt|em)\s+(.*)?/;
              m = rx.exec(font);
              if (m != null) {
                  var fontStyle = m[1];
                  var fontVariant = m[2];
                  var fontWeight = m[3];
                  var fontSize = m[4];
                  var fontSizeUnit = m[5];
                  var fontFamily = m[6];
  
                  if ('px' === fontSizeUnit) {
                      fontSize = Math.floor(parseFloat(fontSize));
                      // fontSize = fontSize * 1.25;
                  } else if ('em' === fontSizeUnit) {
                      fontSize = Math.floor(parseFloat(fontSize) * this.pdf.getFontSize());
                  } else {
                      fontSize = Math.floor(parseFloat(fontSize));
                  }
  
                  this.pdf.setFontSize(fontSize);
  
                  if (fontWeight === 'bold' || fontWeight === '700') {
                      this.pdf.setFontStyle('bold');
                  } else {
                      if (fontStyle === 'italic') {
                          this.pdf.setFontStyle('italic');
                      } else {
                          this.pdf.setFontStyle('normal');
                      }
                  }
  
                  var name = fontFamily;
                  var parts = name.toLowerCase().split(/\s*,\s*/);
                  var jsPdfFontName;
  
                  if (parts.indexOf('arial') != -1) {
                      jsPdfFontName = 'Arial';
                  }
                  else if (parts.indexOf('verdana') != -1) {
                      jsPdfFontName = 'Verdana';
                  }
                  else if (parts.indexOf('helvetica') != -1) {
                      jsPdfFontName = 'Helvetica';
                  }
                  else if (parts.indexOf('sans-serif') != -1) {
                      jsPdfFontName = 'sans-serif';
                  }
  
                  else if (parts.indexOf('fixed') != -1) {
                      jsPdfFontName = 'Fixed';
                  }
                  else if (parts.indexOf('monospace') != -1) {
                      jsPdfFontName = 'Monospace';
                  }
                  else if (parts.indexOf('terminal') != -1) {
                      jsPdfFontName = 'Terminal';
                  }
                  else if (parts.indexOf('courier') != -1) {
                      jsPdfFontName = 'Courier';
                  }
  
                  else if (parts.indexOf('times') != -1) {
                      jsPdfFontName = 'Times';
                  }
                  else if (parts.indexOf('cursive') != -1) {
                      jsPdfFontName = 'Cursive';
                  }
                  else if (parts.indexOf('fantasy') != -1) {
                      jsPdfFontName = 'Fantasy';
                  }
                  else if (parts.indexOf('serif') != -1) {
                      jsPdfFontName = 'Serif';
                  }
                  else {
                      jsPdfFontName = 'Serif';
                  }
  
                  //TODO check more cases
                  var style;
                  if ('bold' === fontWeight) {
                      style = 'bold';
                  } else {
                      style = 'normal';
                  }
  
                  this.pdf.setFont(jsPdfFontName, style);
              } else {
                  var rx = /(\d+)(pt|px|em)\s+(\w+)\s*(\w+)?/;
                  var m = rx.exec(font);
                  if (m != null) {
                      var size = m[1];
                      var unit = m[2];
                      var name = m[3];
                      var style = m[4];
                      if (!style) {
                          style = 'normal';
                      }
                      if ('em' === fontSizeUnit) {
                          size = Math.floor(parseFloat(fontSize) * this.pdf.getFontSize());
                      } else {
                          size = Math.floor(parseFloat(size));
                      }
                      this.pdf.setFontSize(size);
                      this.pdf.setFont(name, style);
                  }
              }
          },
  
          setTextBaseline: function (baseline) {
              this.ctx.textBaseline = baseline;
          },
  
          getTextBaseline: function () {
              return this.ctx.textBaseline;
          },
  
          //TODO implement textAlign
          setTextAlign: function (align) {
              this.ctx.textAlign = align;
          },
  
          getTextAlign: function () {
              return this.ctx.textAlign;
          },
  
          setLineWidth: function (width) {
              this.ctx.lineWidth = width;
              this.pdf.setLineWidth(width);
          },
  
          setLineCap: function (style) {
              this.ctx.lineCap = style;
              this.pdf.setLineCap(style);
          },
  
          setLineJoin: function (style) {
              this.ctx.lineJoin = style;
              this.pdf.setLineJoin(style);
          },
  
          moveTo: function (x, y) {
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
  
              var obj = {
                  type: 'mt',
                  x: x,
                  y: y
              };
              this.path.push(obj);
          },
  
          _wrapX: function (x) {
              if (this.pageWrapXEnabled) {
                  return x % this.pageWrapX;
              } else {
                  return x;
              }
          },
  
          _wrapY: function (y) {
              if (this.pageWrapYEnabled) {
                  this._gotoPage(this._page(y));
                  return (y - this.lastBreak) % this.pageWrapY;
              } else {
                  return y;
              }
          },
  
          transform: function (a, b, c, d, e, f) {
              //TODO apply to current transformation instead of replacing
              this.ctx._transform = [a, b, c, d, e, f];
          },
  
          setTransform: function (a, b, c, d, e, f) {
              this.ctx._transform = [a, b, c, d, e, f];
          },
  
          _getTransform: function () {
              return this.ctx._transform;
          },
  
          lastBreak: 0,
          // Y Position of page breaks.
          pageBreaks: [],
          // returns: One-based Page Number
          // Should only be used if pageWrapYEnabled is true
          _page: function (y) {
              if (this.pageWrapYEnabled) {
                  this.lastBreak = 0;
                  var manualBreaks = 0;
                  var autoBreaks = 0;
                  for (var i = 0; i < this.pageBreaks.length; i++) {
                      if (y >= this.pageBreaks[i]) {
                          manualBreaks++;
                          if (this.lastBreak === 0) {
                              autoBreaks++;
                          }
                          var spaceBetweenLastBreak = this.pageBreaks[i] - this.lastBreak;
                          this.lastBreak = this.pageBreaks[i];
                          var pagesSinceLastBreak = Math.floor(spaceBetweenLastBreak / this.pageWrapY);
                          autoBreaks += pagesSinceLastBreak;
                      }
                  }
                  if (this.lastBreak === 0) {
                      var pagesSinceLastBreak = Math.floor(y / this.pageWrapY) + 1;
                      autoBreaks += pagesSinceLastBreak;
                  }
                  return autoBreaks + manualBreaks;
              } else {
                  return this.pdf.internal.getCurrentPageInfo().pageNumber;
              }
          },
  
          _gotoPage: function (pageOneBased) {
              // This is a stub to be overriden if needed
          },
  
          lineTo: function (x, y) {
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
  
              var obj = {
                  type: 'lt',
                  x: x,
                  y: y
              };
              this.path.push(obj);
          },
  
          bezierCurveTo: function (x1, y1, x2, y2, x, y) {
              x1 = this._wrapX(x1);
              y1 = this._wrapY(y1);
              x2 = this._wrapX(x2);
              y2 = this._wrapY(y2);
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt;
              xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
              xpt = this._matrix_map_point(this.ctx._transform, [x1, y1]);
              x1 = xpt[0];
              y1 = xpt[1];
              xpt = this._matrix_map_point(this.ctx._transform, [x2, y2]);
              x2 = xpt[0];
              y2 = xpt[1];
  
  
              var obj = {
                  type: 'bct',
                  x1: x1,
                  y1: y1,
                  x2: x2,
                  y2: y2,
                  x: x,
                  y: y
              };
              this.path.push(obj);
          },
  
          quadraticCurveTo: function (x1, y1, x, y) {
              x1 = this._wrapX(x1);
              y1 = this._wrapY(y1);
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt;
              xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
              xpt = this._matrix_map_point(this.ctx._transform, [x1, y1]);
              x1 = xpt[0];
              y1 = xpt[1];
  
              var obj = {
                  type: 'qct',
                  x1: x1,
                  y1: y1,
                  x: x,
                  y: y
              };
              this.path.push(obj);
          },
  
          arc: function (x, y, radius, startAngle, endAngle, anticlockwise) {
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xpt = this._matrix_map_point(this.ctx._transform, [x, y]);
              x = xpt[0];
              y = xpt[1];
  
              var obj = {
                  type: 'arc',
                  x: x,
                  y: y,
                  radius: radius,
                  startAngle: startAngle,
                  endAngle: endAngle,
                  anticlockwise: anticlockwise
              };
              this.path.push(obj);
          },
  
          drawImage: function (img, x, y, w, h, x2, y2, w2, h2) {
              if (x2 !== undefined) {
                  x = x2;
                  y = y2;
                  w = w2;
                  h = h2;
              }
              x = this._wrapX(x);
              y = this._wrapY(y);
  
              var xRect = this._matrix_map_rect(this.ctx._transform, {x: x, y: y, w: w, h: h});
              var xRect2 = this._matrix_map_rect(this.ctx._transform, {x: x2, y: y2, w: w2, h: h2});
  
              // TODO implement source clipping and image scaling
              var format;
              var rx = /data:image\/(\w+).*/i;
              var m = rx.exec(img);
              if (m != null) {
                  format = m[1];
              } else {
                  // format = "jpeg";
                  format = "png";
              }
  
              this.pdf.addImage(img, format, xRect.x, xRect.y, xRect.w, xRect.h);
          },
  
          /**
           * Multiply the first matrix by the second
           * @param m1
           * @param m2
           * @returns {*[]}
           * @private
           */
          _matrix_multiply: function (m2, m1) {
              var sx = m1[0];
              var shy = m1[1];
              var shx = m1[2];
              var sy = m1[3];
              var tx = m1[4];
              var ty = m1[5];
  
              var t0 = sx * m2[0] + shy * m2[2];
              var t2 = shx * m2[0] + sy * m2[2];
              var t4 = tx * m2[0] + ty * m2[2] + m2[4];
              shy = sx * m2[1] + shy * m2[3];
              sy = shx * m2[1] + sy * m2[3];
              ty = tx * m2[1] + ty * m2[3] + m2[5];
              sx = t0;
              shx = t2;
              tx = t4;
  
              return [sx, shy, shx, sy, tx, ty];
          },
  
          _matrix_rotation: function (m) {
              return Math.atan2(m[2], m[0]);
  
          },
  
          _matrix_decompose: function (matrix) {
  
              var a = matrix[0];
              var b = matrix[1];
              var c = matrix[2];
              var d = matrix[3];
  
              var scaleX = Math.sqrt(a * a + b * b);
              a /= scaleX;
              b /= scaleX;
  
              var shear = a * c + b * d;
              c -= a * shear;
              d -= b * shear;
  
              var scaleY = Math.sqrt(c * c + d * d);
              c /= scaleY;
              d /= scaleY;
              shear /= scaleY;
  
              if (a * d < b * c) {
                  a = -a;
                  b = -b;
                  shear = -shear;
                  scaleX = -scaleX;
              }
  
              return {
                  scale: [scaleX, 0, 0, scaleY, 0, 0],
                  translate: [1, 0, 0, 1, matrix[4], matrix[5]],
                  rotate: [a, b, -b, a, 0, 0],
                  skew: [1, 0, shear, 1, 0, 0]
              };
          },
  
          _matrix_map_point: function (m1, pt) {
              var sx = m1[0];
              var shy = m1[1];
              var shx = m1[2];
              var sy = m1[3];
              var tx = m1[4];
              var ty = m1[5];
  
              var px = pt[0];
              var py = pt[1];
  
              var x = px * sx + py * shx + tx;
              var y = px * shy + py * sy + ty;
              return [x, y];
          },
  
          _matrix_map_point_obj: function (m1, pt) {
              var xpt = this._matrix_map_point(m1, [pt.x, pt.y]);
              return {x: xpt[0], y: xpt[1]};
          },
  
          _matrix_map_rect: function (m1, rect) {
              var p1 = this._matrix_map_point(m1, [rect.x, rect.y]);
              var p2 = this._matrix_map_point(m1, [rect.x + rect.w, rect.y + rect.h]);
              return {x: p1[0], y: p1[1], w: p2[0] - p1[0], h: p2[1] - p1[1]};
          },
  
          _matrix_is_identity: function (m1) {
              if (m1[0] != 1) {
                  return false;
              }
              if (m1[1] != 0) {
                  return false;
              }
              if (m1[2] != 0) {
                  return false;
              }
              if (m1[3] != 1) {
                  return false;
              }
              if (m1[4] != 0) {
                  return false;
              }
              if (m1[5] != 0) {
                  return false;
              }
              return true;
          },
  
          rotate: function (angle) {
              var matrix = [Math.cos(angle), Math.sin(angle), -Math.sin(angle), Math.cos(angle), 0.0, 0.0];
              this.ctx._transform = this._matrix_multiply(this.ctx._transform, matrix);
          },
  
          scale: function (sx, sy) {
              var matrix = [sx, 0.0, 0.0, sy, 0.0, 0.0];
              this.ctx._transform = this._matrix_multiply(this.ctx._transform, matrix);
          },
  
          translate: function (x, y) {
              var matrix = [1.0, 0.0, 0.0, 1.0, x, y];
              this.ctx._transform = this._matrix_multiply(this.ctx._transform, matrix);
          },
  
          stroke: function () {
              if (this.ctx._clip_path.length > 0) {
  
                  var lines;
                  if (window.outIntercept) {
                      lines = window.outIntercept.type === 'group' ? window.outIntercept.stream : window.outIntercept;
                  } else {
                      lines = this.pdf.internal.pages[1];
                  }
                  lines.push("q");
  
                  var origPath = this.path;
                  this.path = this.ctx._clip_path;
                  this.ctx._clip_path = [];
                  this._stroke(true);
  
                  this.ctx._clip_path = this.path;
                  this.path = origPath;
                  this._stroke(false);
  
                  lines.push("Q");
              } else {
                  this._stroke(false);
              }
          },
  
          _stroke: function (isClip) {
              if (!isClip && this._isStrokeTransparent()) {
                  return;
              }
  
              //TODO opacity
  
              var moves = [];
              var closed = false;
  
              var xPath = this.path;
  
              for (var i = 0; i < xPath.length; i++) {
                  var pt = xPath[i];
                  switch (pt.type) {
                      case 'mt':
                          moves.push({start: pt, deltas: [], abs: []});
                          break;
                      case 'lt':
                          var delta = [
                              pt.x - xPath[i - 1].x, pt.y - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          moves[moves.length - 1].abs.push(pt);
                          break;
                      case 'bct':
                          var delta = [
                              pt.x1 - xPath[i - 1].x, pt.y1 - xPath[i - 1].y,
                              pt.x2 - xPath[i - 1].x, pt.y2 - xPath[i - 1].y,
                              pt.x - xPath[i - 1].x, pt.y - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          break;
                      case 'qct':
                          // convert to bezier
                          var x1 = xPath[i - 1].x + 2.0 / 3.0 * (pt.x1 - xPath[i - 1].x);
                          var y1 = xPath[i - 1].y + 2.0 / 3.0 * (pt.y1 - xPath[i - 1].y);
                          var x2 = pt.x + 2.0 / 3.0 * (pt.x1 - pt.x);
                          var y2 = pt.y + 2.0 / 3.0 * (pt.y1 - pt.y);
                          var x3 = pt.x;
                          var y3 = pt.y;
                          var delta = [
                              x1 - xPath[i - 1].x, y1 - xPath[i - 1].y,
                              x2 - xPath[i - 1].x, y2 - xPath[i - 1].y,
                              x3 - xPath[i - 1].x, y3 - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          break;
                      case 'arc':
                          moves[moves.length - 1].arc = true;
                          moves[moves.length - 1].abs.push(pt);
                          break;
                      case 'close':
                          closed = true;
                          break;
                  }
              }
  
              for (var i = 0; i < moves.length; i++) {
                  var style;
                  if (i == moves.length - 1) {
                      style = 's';
                  } else {
                      style = null;
                  }
                  if (moves[i].arc) {
                      var arcs = moves[i].abs;
                      for (var ii = 0; ii < arcs.length; ii++) {
                          var arc = arcs[ii];
                          var start = arc.startAngle * 360 / (2 * Math.PI);
                          var end = arc.endAngle * 360 / (2 * Math.PI);
                          var x = arc.x;
                          var y = arc.y;
                          this.internal.arc2(this, x, y, arc.radius, start, end, arc.anticlockwise, style, isClip);
                      }
                  } else {
                      var x = moves[i].start.x;
                      var y = moves[i].start.y;
                      if (!isClip) {
                          this.pdf.lines(moves[i].deltas, x, y, null, style);
                      } else {
                          this.pdf.lines(moves[i].deltas, x, y, null, null);
                          this.pdf.clip_fixed();
                      }
                  }
              }
          },
  
          _isFillTransparent: function () {
              return this.ctx._isFillTransparent || this.globalAlpha == 0;
          },
  
          _isStrokeTransparent: function () {
              return this.ctx._isStrokeTransparent || this.globalAlpha == 0;
          },
  
          fill: function (fillRule) { //evenodd or nonzero (default)
              if (this.ctx._clip_path.length > 0) {
  
                  var lines;
                  if (window.outIntercept) {
                      lines = window.outIntercept.type === 'group' ? window.outIntercept.stream : window.outIntercept;
                  } else {
                      lines = this.pdf.internal.pages[1];
                  }
                  lines.push("q");
  
                  var origPath = this.path;
                  this.path = this.ctx._clip_path;
                  this.ctx._clip_path = [];
                  this._fill(fillRule, true);
  
                  this.ctx._clip_path = this.path;
                  this.path = origPath;
                  this._fill(fillRule, false);
  
                  lines.push('Q');
              } else {
                  this._fill(fillRule, false);
              }
          },
  
          _fill: function (fillRule, isClip) {
              if (this._isFillTransparent()) {
                  return;
              }
              var v2Support = typeof this.pdf.internal.newObject2 === 'function';
  
              var lines;
              if (window.outIntercept) {
                  lines = window.outIntercept.type === 'group' ? window.outIntercept.stream : window.outIntercept;
              } else {
                  lines = this.pdf.internal.pages[1];
              }
  
              // if (this.ctx._clip_path.length > 0) {
              //     lines.push('q');
              //     var oldPath = this.path;
              //     this.path = this.ctx._clip_path;
              //     this.ctx._clip_path = [];
              //     this._fill(fillRule, true);
              //     this.ctx._clip_path = this.path;
              //     this.path = oldPath;
              // }
  
              var moves = [];
              var outInterceptOld = window.outIntercept;
  
              if (v2Support) {
                  // Blend and Mask
                  switch (this.ctx.globalCompositeOperation) {
                      case 'normal':
                      case 'source-over':
                          break;
                      case 'destination-in':
                      case 'destination-out':
                          //TODO this need to be added to the current group or page
                          // define a mask stream
                          var obj = this.pdf.internal.newStreamObject();
  
                          // define a mask state
                          var obj2 = this.pdf.internal.newObject2();
                          obj2.push('<</Type /ExtGState');
                          obj2.push('/SMask <</S /Alpha /G ' + obj.objId + ' 0 R>>'); // /S /Luminosity will need to define color space
                          obj2.push('>>');
  
                          // add mask to page resources
                          var gsName = 'MASK' + obj2.objId;
                          this.pdf.internal.addGraphicsState(gsName, obj2.objId);
  
                          var instruction = '/' + gsName + ' gs';
                          // add mask to page, group, or stream
                          lines.splice(0, 0, 'q');
                          lines.splice(1, 0, instruction);
                          lines.push('Q');
  
                          window.outIntercept = obj;
                          break;
                      default:
                          var dictionaryEntry = '/' + this.pdf.internal.blendModeMap[this.ctx.globalCompositeOperation.toUpperCase()];
                          if (dictionaryEntry) {
                              this.pdf.internal.out(dictionaryEntry + ' gs');
                          }
                          break;
                  }
              }
  
              var alpha = this.ctx.globalAlpha;
              if (this.ctx._fillOpacity < 1) {
                  // TODO combine this with global opacity
                  alpha = this.ctx._fillOpacity;
              }
  
              //TODO check for an opacity graphics state that was already created
              //TODO do not set opacity if current value is already active
              if (v2Support) {
                  var objOpac = this.pdf.internal.newObject2();
                  objOpac.push('<</Type /ExtGState');
                  //objOpac.push(this.ctx.globalAlpha + " CA"); // Stroke
                  //objOpac.push(this.ctx.globalAlpha + " ca"); // Not Stroke
                  objOpac.push('/CA ' + alpha); // Stroke
                  objOpac.push('/ca ' + alpha); // Not Stroke
                  objOpac.push('>>');
                  var gsName = 'GS_O_' + objOpac.objId;
                  this.pdf.internal.addGraphicsState(gsName, objOpac.objId);
                  this.pdf.internal.out('/' + gsName + ' gs');
              }
  
              var xPath = this.path;
  
              for (var i = 0; i < xPath.length; i++) {
                  var pt = xPath[i];
                  switch (pt.type) {
                      case 'mt':
                          moves.push({start: pt, deltas: [], abs: []});
                          break;
                      case 'lt':
                          var delta = [
                              pt.x - xPath[i - 1].x, pt.y - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          moves[moves.length - 1].abs.push(pt);
                          break;
                      case 'bct':
                          var delta = [
                              pt.x1 - xPath[i - 1].x, pt.y1 - xPath[i - 1].y,
                              pt.x2 - xPath[i - 1].x, pt.y2 - xPath[i - 1].y,
                              pt.x - xPath[i - 1].x, pt.y - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          break;
                      case 'qct':
                          // convert to bezier
                          var x1 = xPath[i - 1].x + 2.0 / 3.0 * (pt.x1 - xPath[i - 1].x);
                          var y1 = xPath[i - 1].y + 2.0 / 3.0 * (pt.y1 - xPath[i - 1].y);
                          var x2 = pt.x + 2.0 / 3.0 * (pt.x1 - pt.x);
                          var y2 = pt.y + 2.0 / 3.0 * (pt.y1 - pt.y);
                          var x3 = pt.x;
                          var y3 = pt.y;
                          var delta = [
                              x1 - xPath[i - 1].x, y1 - xPath[i - 1].y,
                              x2 - xPath[i - 1].x, y2 - xPath[i - 1].y,
                              x3 - xPath[i - 1].x, y3 - xPath[i - 1].y
                          ];
                          moves[moves.length - 1].deltas.push(delta);
                          break;
                      case 'arc':
                          //TODO this was hack to avoid out of bounds issue
                          if (moves.length == 0) {
                              moves.push({start: {x: 0, y: 0}, deltas: [], abs: []});
                          }
                          moves[moves.length - 1].arc = true;
                          moves[moves.length - 1].abs.push(pt);
                          break;
                      case 'close':
                          //moves[moves.length - 1].deltas.push('close');
                          break;
                  }
              }
  
              for (var i = 0; i < moves.length; i++) {
                  var style;
                  if (i == moves.length - 1) {
                      style = 'f';
                      if (fillRule === 'evenodd') {
                          style += '*';
                      }
                  } else {
                      style = null;
                  }
  
                  if (moves[i].arc) {
                      var arcs = moves[i].abs;
                      for (var ii = 0; ii < arcs.length; ii++) {
                          var arc = arcs[ii];
                          //TODO lines deltas were getting in here
                          if (typeof arc.startAngle !== 'undefined') {
                              var start = arc.startAngle * 360 / (2 * Math.PI);
                              var end = arc.endAngle * 360 / (2 * Math.PI);
                              // Add the current position (last move to)
                              //var x = moves[i].start.x + arc.x;
                              //var y = moves[i].start.y + arc.y;
                              var x = arc.x;
                              var y = arc.y;
                              if (ii == 0) {
                                  this.internal.move2(this, x, y);
                              }
                              this.internal.arc2(this, x, y, arc.radius, start, end, arc.anticlockwise, null, isClip);
                          } else {
                              this.internal.line2(c2d, arc.x, arc.y);
                          }
                      }
  
                      // extra move bug causing close to resolve to wrong point
                      var x = moves[i].start.x;
                      var y = moves[i].start.y;
                      this.internal.line2(c2d, x, y);
  
                      this.pdf.internal.out('h');
                      this.pdf.internal.out('f');
                  }
                  else {
                      var x = moves[i].start.x;
                      var y = moves[i].start.y;
                      if (!isClip) {
                          this.pdf.lines(moves[i].deltas, x, y, null, style);
                      } else {
                          this.pdf.lines(moves[i].deltas, x, y, null, null);
                          this.pdf.clip_fixed();
                      }
                  }
              }
  
              window.outIntercept = outInterceptOld;
  
              // if (this.ctx._clip_path.length > 0) {
              //     lines.push('Q');
              // }
          },
  
          pushMask: function () {
              var v2Support = typeof this.pdf.internal.newObject2 === 'function';
  
              if (!v2Support){
                  console.log('jsPDF v2 not enabled')
                  return;
              }
  
              // define a mask stream
              var obj = this.pdf.internal.newStreamObject();
  
              // define a mask state
              var obj2 = this.pdf.internal.newObject2();
              obj2.push('<</Type /ExtGState');
              obj2.push('/SMask <</S /Alpha /G ' + obj.objId + ' 0 R>>'); // /S /Luminosity will need to define color space
              obj2.push('>>');
  
              // add mask to page resources
              var gsName = 'MASK' + obj2.objId;
              this.pdf.internal.addGraphicsState(gsName, obj2.objId);
  
              var instruction = '/' + gsName + ' gs';
              this.pdf.internal.out(instruction);
          },
  
          clip: function () {
              //TODO do we reset the path, or just copy it?
              if (this.ctx._clip_path.length > 0) {
                  for (var i = 0; i < this.path.length; i++) {
                      this.ctx._clip_path.push(this.path[i]);
                  }
              } else {
                  this.ctx._clip_path = this.path;
              }
              this.path = [];
          },
  
          measureText: function (text) {
              var pdf = this.pdf;
              return {
                  getWidth: function () {
                      var fontSize = pdf.internal.getFontSize();
                      var txtWidth = pdf.getStringUnitWidth(text) * fontSize / pdf.internal.scaleFactor;
                      return txtWidth;
                  },
  
                  get width() {
                      return this.getWidth(text);
                  }
              }
          },
          _getBaseline: function (y) {
              var height = parseInt(this.pdf.internal.getFontSize());
              // TODO Get descent from font descriptor
              var descent = height * .25;
              switch (this.ctx.textBaseline) {
                  case 'bottom':
                      return y - descent;
                  case 'top':
                      return y + height;
                  case 'hanging':
                      return y + height - descent;
                  case 'middle':
                      return y + height / 2 - descent;
                  case 'ideographic':
                      // TODO not implemented
                      return y;
                  case 'alphabetic':
                  default:
                      return y;
              }
          }
      }
      ;
  
      var c2d = jsPDFAPI.context2d;
  
      // accessor methods
      Object.defineProperty(c2d, 'fillStyle', {
          set: function (value) {
              this.setFillStyle(value);
          },
          get: function () {
              return this.ctx.fillStyle;
          }
      });
      Object.defineProperty(c2d, 'strokeStyle', {
          set: function (value) {
              this.setStrokeStyle(value);
          },
          get: function () {
              return this.ctx.strokeStyle;
          }
      });
      Object.defineProperty(c2d, 'lineWidth', {
          set: function (value) {
              this.setLineWidth(value);
          },
          get: function () {
              return this.ctx.lineWidth;
          }
      });
      Object.defineProperty(c2d, 'lineCap', {
          set: function (val) {
              this.setLineCap(val);
          },
          get: function () {
              return this.ctx.lineCap;
          }
      });
      Object.defineProperty(c2d, 'lineJoin', {
          set: function (val) {
              this.setLineJoin(val);
          },
          get: function () {
              return this.ctx.lineJoin;
          }
      });
      Object.defineProperty(c2d, 'miterLimit', {
          set: function (val) {
              this.ctx.miterLimit = val;
          },
          get: function () {
              return this.ctx.miterLimit;
          }
      });
      Object.defineProperty(c2d, 'textBaseline', {
          set: function (value) {
              this.setTextBaseline(value);
          },
          get: function () {
              return this.getTextBaseline();
          }
      });
      Object.defineProperty(c2d, 'textAlign', {
          set: function (value) {
              this.setTextAlign(value);
          },
          get: function () {
              return this.getTextAlign();
          }
      });
      Object.defineProperty(c2d, 'font', {
          set: function (value) {
              this.setFont(value);
          },
          get: function () {
              return this.ctx.font;
          }
      });
      Object.defineProperty(c2d, 'globalCompositeOperation', {
          set: function (value) {
              this.ctx.globalCompositeOperation = value;
          },
          get: function () {
              return this.ctx.globalCompositeOperation;
          }
      });
      Object.defineProperty(c2d, 'globalAlpha', {
          set: function (value) {
              this.ctx.globalAlpha = value;
          },
          get: function () {
              return this.ctx.globalAlpha;
          }
      });
  
      c2d.internal = {};
  
      c2d.internal.rxRgb = /rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)/;
      c2d.internal.rxRgba = /rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*([\d\.]+)\s*\)/;
      c2d.internal.rxTransparent = /transparent|rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*0+\s*\)/;
  
      // http://hansmuller-flex.blogspot.com/2011/10/more-about-approximating-circular-arcs.html
      c2d.internal.arc = function (c2d, xc, yc, r, a1, a2, anticlockwise, style) {
          var includeMove = true;
  
          var k = this.pdf.internal.scaleFactor;
          var pageHeight = this.pdf.internal.pageSize.height;
          var f2 = this.pdf.internal.f2;
  
          var a1r = a1 * (Math.PI / 180);
          var a2r = a2 * (Math.PI / 180);
          var curves = this.createArc(r, a1r, a2r, anticlockwise);
          var pathData = null;
  
          for (var i = 0; i < curves.length; i++) {
              var curve = curves[i];
              if (includeMove && i == 0) {
                  this.pdf.internal.out([
                      f2((curve.x1 + xc) * k), f2((pageHeight - (curve.y1 + yc)) * k), 'm', f2((curve.x2 + xc) * k), f2((pageHeight - (curve.y2 + yc)) * k), f2((curve.x3 + xc) * k), f2((pageHeight - (curve.y3 + yc)) * k), f2((curve.x4 + xc) * k), f2((pageHeight - (curve.y4 + yc)) * k), 'c'
                  ].join(' '));
  
              } else {
                  this.pdf.internal.out([
                      f2((curve.x2 + xc) * k), f2((pageHeight - (curve.y2 + yc)) * k), f2((curve.x3 + xc) * k), f2((pageHeight - (curve.y3 + yc)) * k), f2((curve.x4 + xc) * k), f2((pageHeight - (curve.y4 + yc)) * k), 'c'
                  ].join(' '));
              }
  
              //c2d._lastPoint = {x: curve.x1 + xc, y: curve.y1 + yc};
              c2d._lastPoint = {x: xc, y: yc};
              // f2((curve.x1 + xc) * k), f2((pageHeight - (curve.y1 + yc)) * k), 'm', f2((curve.x2 + xc) * k), f2((pageHeight - (curve.y2 + yc)) * k), f2((curve.x3 + xc) * k), f2((pageHeight - (curve.y3 + yc)) * k), f2((curve.x4 + xc) * k), f2((pageHeight - (curve.y4 + yc)) * k), 'c'
          }
  
          if (style !== null) {
              this.pdf.internal.out(this.pdf.internal.getStyle(style));
          }
      };
  
      /**
       *
       * @param x Edge point X
       * @param y Edge point Y
       * @param r Radius
       * @param a1 start angle
       * @param a2 end angle
       * @param anticlockwise
       * @param style
       * @param isClip
       */
      c2d.internal.arc2 = function (c2d, x, y, r, a1, a2, anticlockwise, style, isClip) {
          // we need to convert from cartesian to polar here methinks.
          var centerX = x;// + r;
          var centerY = y;
  
          if (false) {
              var phi = (a2 - a1);
              var start = {
                  x: r,
                  y: 0
              };
  
              var pt1 = {
                  x: r,
                  y: r * 4 / 3 * Math.tan(phi / 4)
              };
  
              var pt2 = {
                  x: r * ( Math.cos(phi) + 4 / 3 * Math.tan(phi / 4) * Math.sin(phi) ),
                  y: r * ( Math.sin(phi) - 4 / 3 * Math.tan(phi / 4) * Math.cos(phi) )
              };
  
              var end = {
                  x: r * Math.cos(phi),
                  y: r * Math.sin(phi)
              };
  
              var matrix = [Math.cos(a1), Math.sin(a1), -Math.sin(a1), Math.cos(a1), x, y];
              start = c2d._matrix_map_point_obj(matrix, start);
              pt1 = c2d._matrix_map_point_obj(matrix, pt1);
              pt2 = c2d._matrix_map_point_obj(matrix, pt2);
              end = c2d._matrix_map_point_obj(matrix, end);
  
              var k = this.pdf.internal.scaleFactor;
              var pageHeight = this.pdf.internal.pageSize.height;
              var f2 = this.pdf.internal.f2;
              this.pdf.internal.out([
                  f2((start.x) * k), f2((pageHeight - (start.y)) * k), 'm', f2((pt1.x) * k), f2((pageHeight - (pt1.y)) * k), f2((pt2.x) * k), f2((pageHeight - (pt2.y)) * k), f2((end.x) * k), f2((pageHeight - (end.y)) * k), 'c'
              ].join(' '));
              //this.pdf.internal.out('f');
              c2d._lastPoint = end;
              return;
          }
  
          if (!isClip) {
              this.arc(c2d, centerX, centerY, r, a1, a2, anticlockwise, style);
          } else {
              this.arc(c2d, centerX, centerY, r, a1, a2, anticlockwise, null);
              this.pdf.clip_fixed();
          }
      };
  
      c2d.internal.move2 = function (c2d, x, y) {
          var k = this.pdf.internal.scaleFactor;
          var pageHeight = this.pdf.internal.pageSize.height;
          var f2 = this.pdf.internal.f2;
  
          this.pdf.internal.out([
              f2((x) * k), f2((pageHeight - (y)) * k), 'm'
          ].join(' '));
          c2d._lastPoint = {x: x, y: y};
      };
  
      c2d.internal.line2 = function (c2d, dx, dy) {
          var k = this.pdf.internal.scaleFactor;
          var pageHeight = this.pdf.internal.pageSize.height;
          var f2 = this.pdf.internal.f2;
  
          //var pt = {x: c2d._lastPoint.x + dx, y: c2d._lastPoint.y + dy};
          var pt = {x: dx, y: dy};
  
          this.pdf.internal.out([
              f2((pt.x) * k), f2((pageHeight - (pt.y)) * k), 'l'
          ].join(' '));
          //this.pdf.internal.out('f');
          c2d._lastPoint = pt;
  
      };
  
      /**
       * Return a array of objects that represent bezier curves which approximate the circular arc centered at the origin, from startAngle to endAngle (radians) with the specified radius.
       *
       * Each bezier curve is an object with four points, where x1,y1 and x4,y4 are the arc's end points and x2,y2 and x3,y3 are the cubic bezier's control points.
       */
  
      c2d.internal.createArc = function (radius, startAngle, endAngle, anticlockwise) {
  
          var EPSILON = 0.00001; // Roughly 1/1000th of a degree, see below
  
          // normalize startAngle, endAngle to [-2PI, 2PI]
          var twoPI = Math.PI * 2;
          var startAngleN = startAngle;
          if (startAngleN < twoPI || startAngleN > twoPI) {
              startAngleN = startAngleN % twoPI;
          }
          var endAngleN = endAngle;
          if (endAngleN < twoPI || endAngleN > twoPI) {
              endAngleN = endAngleN % twoPI;
          }
  
          // Compute the sequence of arc curves, up to PI/2 at a time.
          // Total arc angle is less than 2PI.
          var curves = [];
          var piOverTwo = Math.PI / 2.0;
          // var sgn = (startAngle < endAngle) ? +1 : -1; // clockwise or counterclockwise
          var sgn = anticlockwise ? -1 : +1;
  
          var a1 = startAngle;
          for (var totalAngle = Math.min(twoPI, Math.abs(endAngleN - startAngleN)); totalAngle > EPSILON;) {
              var a2 = a1 + sgn * Math.min(totalAngle, piOverTwo);
              curves.push(this.createSmallArc(radius, a1, a2));
              totalAngle -= Math.abs(a2 - a1);
              a1 = a2;
          }
  
          return curves;
      };
  
      /**
       * Cubic bezier approximation of a circular arc centered at the origin, from (radians) a1 to a2, where a2-a1 < pi/2. The arc's radius is r.
       *
       * Returns an object with four points, where x1,y1 and x4,y4 are the arc's end points and x2,y2 and x3,y3 are the cubic bezier's control points.
       *
       * This algorithm is based on the approach described in: A. Riškus, "Approximation of a Cubic Bezier Curve by Circular Arcs and Vice Versa," Information Technology and Control, 35(4), 2006 pp. 371-378.
       */
  
      c2d.internal.createSmallArc = function (r, a1, a2) {
          // Compute all four points for an arc that subtends the same total angle
          // but is centered on the X-axis
  
          var a = (a2 - a1) / 2.0;
  
          var x4 = r * Math.cos(a);
          var y4 = r * Math.sin(a);
          var x1 = x4;
          var y1 = -y4;
  
          var q1 = x1 * x1 + y1 * y1;
          var q2 = q1 + x1 * x4 + y1 * y4;
          var k2 = 4 / 3 * (Math.sqrt(2 * q1 * q2) - q2) / (x1 * y4 - y1 * x4);
  
          var x2 = x1 - k2 * y1;
          var y2 = y1 + k2 * x1;
          var x3 = x2;
          var y3 = -y2;
  
          // Find the arc points' actual locations by computing x1,y1 and x4,y4
          // and rotating the control points by a + a1
  
          var ar = a + a1;
          var cos_ar = Math.cos(ar);
          var sin_ar = Math.sin(ar);
  
          return {
              x1: r * Math.cos(a1),
              y1: r * Math.sin(a1),
              x2: x2 * cos_ar - y2 * sin_ar,
              y2: x2 * sin_ar + y2 * cos_ar,
              x3: x3 * cos_ar - y3 * sin_ar,
              y3: x3 * sin_ar + y3 * cos_ar,
              x4: r * Math.cos(a2),
              y4: r * Math.sin(a2)
          };
      }
  
      function context() {
          this._isStrokeTransparent = false;
          this._strokeOpacity = 1;
          this.strokeStyle = '#000000';
          this.fillStyle = '#000000';
          this._isFillTransparent = false;
          this._fillOpacity = 1;
          this.font = "12pt times";
          this.textBaseline = 'alphabetic'; // top,bottom,middle,ideographic,alphabetic,hanging
          this.textAlign = 'start';
          this.lineWidth = 1;
          this.lineJoin = 'miter'; // round, bevel, miter
          this.lineCap = 'butt'; // butt, round, square
          this._transform = [1, 0, 0, 1, 0, 0]; // sx, shy, shx, sy, tx, ty
          this.globalCompositeOperation = 'normal';
          this.globalAlpha = 1.0;
          this._clip_path = [];
          // TODO miter limit //default 10
  
          this.copy = function (ctx) {
              this._isStrokeTransparent = ctx._isStrokeTransparent;
              this._strokeOpacity = ctx._strokeOpacity;
              this.strokeStyle = ctx.strokeStyle;
              this._isFillTransparent = ctx._isFillTransparent;
              this._fillOpacity = ctx._fillOpacity;
              this.fillStyle = ctx.fillStyle;
              this.font = ctx.font;
              this.lineWidth = ctx.lineWidth;
              this.lineJoin = ctx.lineJoin;
              this.lineCap = ctx.lineCap;
              this.textBaseline = ctx.textBaseline;
              this.textAlign = ctx.textAlign;
              this._fontSize = ctx._fontSize;
              this._transform = ctx._transform.slice(0);
              this.globalCompositeOperation = ctx.globalCompositeOperation;
              this.globalAlpha = ctx.globalAlpha;
              this._clip_path = ctx._clip_path.slice(0); //TODO deep copy?
          };
      }
  
      return this;
  })(jsPDF.API);