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strict';\nvar ctx = require('./_ctx');\nvar $export = require('./_export');\nvar toObject = require('./_to-object');\nvar call = require('./_iter-call');\nvar isArrayIter = require('./_is-array-iter');\nvar toLength = require('./_to-length');\nvar createProperty = require('./_create-property');\nvar getIterFn = require('./core.get-iterator-method');\n\n$export($export.S + $export.F * !require('./_iter-detect')(function (iter) { Array.from(iter); }), 'Array', {\n  // 22.1.2.1 Array.from(arrayLike, mapfn = undefined, thisArg = undefined)\n  from: function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {\n    var O = toObject(arrayLike);\n    var C = typeof this == 'function' ? this : Array;\n    var aLen = arguments.length;\n    var mapfn = aLen > 1 ? arguments[1] : undefined;\n    var mapping = mapfn !== undefined;\n    var index = 0;\n    var iterFn = getIterFn(O);\n    var length, result, step, iterator;\n    if (mapping) mapfn = ctx(mapfn, aLen > 2 ? arguments[2] : undefined, 2);\n    // if object isn't iterable or it's array with default iterator - use simple case\n    if (iterFn != undefined && !(C == Array && isArrayIter(iterFn))) {\n      for (iterator = iterFn.call(O), result = new C(); !(step = iterator.next()).done; index++) {\n        createProperty(result, index, mapping ? call(iterator, mapfn, [step.value, index], true) : step.value);\n      }\n    } else {\n      length = toLength(O.length);\n      for (result = new C(length); length > index; index++) {\n        createProperty(result, index, mapping ? mapfn(O[index], index) : O[index]);\n      }\n    }\n    result.length = index;\n    return result;\n  }\n});\n","// 22.1.2.2 / 15.4.3.2 Array.isArray(arg)\nvar $export = require('./_export');\n\n$export($export.S, 'Array', { isArray: require('./_is-array') });\n","////////////////////////////////////////////////////////\r\nvar printArray =[];\r\nexport function alert(board, msg)\r\n{\r\n msg.setAttribute({visible:true});\r\n setTimeout(() => {\r\n  msg.setAttribute({visible:false});\r\n}, \"500\")\r\n// setTimeout(msg.setAttribute({visible:false}), 400);\r\n}\r\nexport function createSpace(xmin, xmax, ymin, ymax){\r\nlet graph = JXG.JSXGraph.initBoard('jxgbox1',{boundingbox: [xmin, ymax, xmax, ymin],\r\n    keepaspectratio: true, axis:false, ticks:{visible:false},\r\n    grid:true, showCopyright:false, showNavigation:false,\r\n    pan:{enabled:false}, zoom:{enabled:false}});\r\nreturn graph\r\n  }\r\n///////////////removing the object/////////////////////////////////////////////\r\nfunction removeIt(board, obj)\r\n{\r\nboard.removeObject(obj);\r\n}\r\n///////////////////////repeat an action////////////////////////////////////////////////////\r\nexport function repeatTask(n, act)\r\n{\r\nfor(let i=0;i<n;i++){\r\n  act(i);\r\n}\r\n}\r\n/////////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeCircles(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/circleWhite.svg', [positionX+i-size/2, positionY-0.5-size/2],[size, size]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:true\r\n  });\r\n}\r\n return imgs;\r\n}\r\n//////////////////////////\r\nexport function placeYCircles(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/circle.svg', [positionX+i-size/2, positionY-0.5-size/2],[size, size]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:true\r\n  });\r\n}\r\n return imgs;\r\n}\r\n///////////////////////////////////////////Blue Circles////////\r\nexport function place3Circles(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=2;i++){\r\n  imgs[i]=board.create('image',['/assets/circleWhite.svg', [positionX+i-size/2, positionY-0.5-size/2],[size, size]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:true\r\n  });\r\n}\r\n return imgs;\r\n}\r\n//////////////////////////////////////////////////////////////\r\nexport function place3BCircles(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=2;i++){\r\n  imgs[i]=board.create('image',['/assets/blueCircle.svg', [positionX+i-size/2, positionY-0.5-size/2],[size,size]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:true\r\n  });\r\n}\r\n return imgs;\r\n}\r\n//////////////////////////////////////////////////////////////\r\nexport function placeBCircles(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/blueCircle.svg', [positionX+i-size/2, positionY-0.5-size/2],[size,size]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:true\r\n  });\r\n}\r\n return imgs;\r\n}\r\n////////////////////////////////////////////////////////////////////\r\nexport function placeEggs(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =0.75;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  let sets = {\r\n      opacity:1,\r\n      fixed:true,\r\n      highlight:false,\r\n      rotate:0,\r\n      visible:true\r\n    }\r\n  imgs[0]=board.create('image',['/assets/eggOne.svg', [positionX+0-size/2, positionY-0.5-size/2],[size, size]]);\r\n  imgs[1]=board.create('image',['/assets/eggTwo.svg', [positionX+1-size/2, positionY-0.5-size/2],[size, size]]);\r\n  imgs[2]=board.create('image',['/assets/eggThree.svg', [positionX+2-size/2, positionY-0.5-size/2],[size, size]]);\r\n return imgs;\r\n}\r\n////////////////////////////////////////////////////////////////////\r\nexport function placeExclaim(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/exclaim.svg', [positionX+i-0.25, positionY-0.75],[0.5,0.5]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:false\r\n  });\r\n}\r\n return imgs;\r\n}\r\n///////////////////////////////////////////////////////////Checkmarks/////////////////////\r\nexport function placeChecks(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/check.svg', [positionX+i-0.25, positionY-0.75],[0.5,0.5]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:false\r\n  });\r\n}\r\n return imgs;\r\n}\r\n////////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeCross(board){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1];\r\n  let imgs=[];\r\n  for(let i=0;i<=4;i++){\r\n  imgs[i]=board.create('image',['/assets/cross.svg', [positionX+i-0.25, positionY-0.75],[0.5,0.5]], {\r\n    opacity:1,\r\n    fixed:true,\r\n    highlight:false,\r\n    rotate:0,\r\n    visible:false\r\n  });\r\n}\r\n return imgs;\r\n}\r\n/////////////////////////////////////////////////////////////////////////////////////\r\nexport function cycle(j, max){\r\n  if(j< max){\r\n    j+=1;\r\n  }\r\n  else{\r\n    j=0;\r\n  }\r\n  return j;\r\n}\r\n///////////////////////////////placeQuestion///////////////////\r\nexport function placeQuestion(board, msg){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1]-1.5;\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'html',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  color:'black',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(26*board.canvasWidth /800.)};\r\n  ////////////////////////////////////////////////////////\r\n  let imgs =board.create('text', [positionX, positionY,  msg], m);\r\n  return imgs;\r\n}\r\n///////////////////////////////placeComment////////////////////\r\nexport function placeComment(board, msg){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1]-1.5;\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'html',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  color:'black',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(26*board.canvasWidth /800.)};\r\n  ////////////////////////////////////////////////////////\r\n  let imgs =board.create('text', [positionX, positionY-5,  msg], m);\r\n  return imgs;\r\n}\r\n//////////////////////////////////////////////////////////////////////\r\nexport function placeFingers(board)\r\n{\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1]-0.5;\r\n  let imgs =[];\r\n  const m = {opacity:1, fixed:true, highlight:false, rotate:0, visible:false};\r\n  imgs[0]=board.create('image',['/assets/finger.svg', [positionX-0.45, positionY-2.35],[0.5,0.5]], m);\r\n  imgs[1]=board.create('image',['/assets/finger.svg', [positionX-0.45, positionY-3.35],[0.5,0.5]], m);\r\n  imgs[2]=board.create('image',['/assets/finger.svg', [positionX-0.45, positionY-4.35],[0.5,0.5]], m);\r\n  imgs[3]=board.create('image',['/assets/finger.svg', [positionX-0.45, positionY-5.35],[0.5,0.5]], m);\r\n  return imgs;\r\n}\r\n///////////////////////////////////////////////////////////////////////\r\nexport function placeAnswers(board, obj){\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = boundingBox[0]+0.5;\r\n  const positionY = boundingBox[1]-1.5;\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'html',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  color:'grey',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(26*board.canvasWidth /800.)};\r\n  ////////////////////////////////////////////////////////\r\n  const letters =['a. ', 'b.  ', 'c. ', 'd.  '];\r\n  let txts =[];\r\n  txts[0] =board.create('text', [positionX+0.15, positionY-1,  ()=>letters[0]+obj[0]], m);\r\n  txts[1] =board.create('text', [positionX+0.15, positionY-2,  ()=>letters[1]+obj[1]], m);\r\n  txts[2] =board.create('text', [positionX+0.15, positionY-3,  ()=>letters[2]+obj[2]], m);\r\n  txts[3] =board.create('text', [positionX+0.15, positionY-4,  ()=>letters[3]+obj[3]], m);\r\n  return txts;\r\n}\r\n//////////////////////////////////\r\nexport function moveIt(obj, xnew, ynew){\r\n  obj.moveTo([xnew, ynew], 1000);\r\n}\r\n/////////////////////////////////////////////////////////////////////\r\nexport function draw3DBox(board, Pt,col)\r\n{\r\n  let ops = {\r\n  vertices:{visible:false},\r\n  fillOpacity:1,\r\n  fillColor:col,\r\n  highlight:false,\r\n  borders:{strokeColor:'black',\r\n  highlight:false,\r\n  strokeWidth: ()=>Math.round(1*board.canvasWidth/800.)}}\r\n  let f1 =board.create('regularpolygon', [[()=>Pt[0], ()=>Pt[1]], [()=>Pt[0]+1, ()=>Pt[1]], 4],ops);\r\n  let f2 = board.create('regularpolygon', [[()=>Pt[0]+0.5, ()=>Pt[1]+0.5], [()=>Pt[0]+0.5+1, ()=>Pt[1]+0.5], 4],ops);\r\n  let f3 =board.create('polygon', [[()=>Pt[0], ()=>Pt[1]+1], [()=>Pt[0]+1, ()=>Pt[1]+1],[()=>Pt[0]+1+0.5, ()=>Pt[1]+1+0.5],[()=>Pt[0]+0.5, ()=>Pt[1]+1+0.5]], ops);\r\n  let f4 = board.create('polygon', [[()=>Pt[0]+1, ()=>Pt[1]], [()=>Pt[0]+1, ()=>Pt[1]+1],[()=>Pt[0]+1+0.5, ()=>Pt[1]+1+0.5],[()=>Pt[0]+1+0.5, ()=>Pt[1]+0.5]], ops);\r\n  return [f1, f2, f3, f4]\r\n}\r\n////////////////////////////////////////////////////////////////////////////////\r\nexport function createAxes(board)\r\n{\r\n  let xAxis =board.create('axis', [[-1, 0],[1, 0]], {\r\n    strokeColor:'grey',\r\n    highlight:false,\r\n    strokeWidth: ()=>Math.round(2*board.canvasWidth/800.),\r\n    withLabel:true,\r\n    name: '',\r\n      label: {\r\n        display:'internal',\r\n        fontSize:function(){return 24*board.canvasHeight/800},\r\n        CssStyle: 'fontFamily:Oswald;fontWeight:bold',\r\n        position: 'rt',\r\n        offset: [-20, 20]}});\r\n  let yAxis =board.create('axis', [[0, -1],[0, 1]], {\r\n    strokeColor:'grey',\r\n    highlight:false,\r\n    strokeWidth: ()=>Math.round(2*board.canvasWidth/800.),\r\n    withLabel:true,\r\n    name: '',\r\n      label: {\r\n        display:'internal',\r\n        fontSize:function(){return 24*board.canvasHeight/800},\r\n        CssStyle: 'fontFamily:Oswald;fontWeight:bold',\r\n        position: 'rt',\r\n        offset: [20, -20]}\r\n  });\r\n  return [xAxis, yAxis];\r\n}\r\n//////////////////////////////////\r\nexport function drawPerp(board, Ln, Pt){\r\n  const lm ={\r\n  fixed:true,\r\n  strokeColor:'black',\r\n  highlight:false,\r\n  perpendicularpoint:{visible:false},\r\n  strokeWidth: () => Math.round(2*board.canvasWidth /800.)};\r\n  let le=board.create('perpendicular', [Ln, [()=>Pt.X(), ()=>Pt.Y()]], lm);\r\n  return le;\r\n}\r\n///////////////////////////////////////////////////////////////////\r\nexport function drawPerpP(board, Ln, Pt){\r\n  const ptA = {\r\n    name:'',\r\n    size: ()=>Math.round(2*board.canvasWidth/800.),\r\n    fillColor:'white',\r\n    strokeColor:'white',\r\n    visible:false,\r\n    label:{display:'internal'},\r\n    highlight:false};\r\n  let le=board.create('perpendicularpoint', [Ln, [()=>Pt.X(), ()=>Pt.Y()]], ptA);\r\n  return le;\r\n}\r\n///////////////////////////////////////////////////////////\r\nexport function drawIntersection(board, Ln1, Ln2)\r\n{\r\n  const ptA = {\r\n    name:'',\r\n    size: ()=>Math.round(2*board.canvasWidth/800.),\r\n    color:'black',\r\n    strokeWidth:()=>Math.ceil(4*board.canvasWidth/800.),\r\n    highlight:false\r\n  };\r\n  let pts = board.create('intersection', [Ln1, Ln2], ptA);\r\n  return pts;\r\n}\r\n///////////////////////////////////////////////////////////////\r\nexport function drawSlider(board, track, positionX, positionY){\r\n     const ptA = {\r\n       name:'',\r\n       size: ()=>Math.round(2*board.canvasWidth/800.),\r\n       color:'black',\r\n       label: {\r\n         display:'internal'\r\n       },\r\n       strokeWidth:()=>Math.ceil(4*board.canvasWidth/800.),\r\n       highlight:false};\r\n     let ptM =board.create('glider', [positionX, positionY, track], ptA);\r\n     return ptM;\r\n   }\r\n//////////////////////////////////////////////\r\nexport function drawMarker(board, track, positionX, positionY){\r\n     const ptA = {\r\n       name:'',\r\n\t   label: {\r\n         display:'internal'\r\n       },\r\n       size: ()=>Math.round(2*board.canvasWidth/800.),\r\n       color:'black',\r\n       highlight:false};\r\n     let ptM =board.create('glider', [positionX, positionY, track], ptA);\r\n     return ptM;\r\n   }\r\n/////////////////////////////////////////////////\r\nexport function placeLogo(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/10;\r\n  let im =board.create('image', ['/assets/logo.png', [boundingBox[2]-size, boundingBox[1]-size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////\r\nexport function placePlay(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/play.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////////////////////////////\r\nexport function placePause(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/pause.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n////////////////////////////////////////////////////\r\nexport function placeGo(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/go.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////////\r\nexport function placeShuffle(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/shuffle.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n/****************************************Hint****************************/\r\nexport function placeHint(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/Hint.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n///////////////////////////////////////////////////////////////////////////\r\nexport function placeShuffleRight(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['/assets/shuffle.svg', [0.5*(boundingBox[2]+boundingBox[0])+0.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeTest(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/puzzle.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n////////////////////////////////////////////////////////////////////////////\r\nexport function placeRight(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['/assets/redo.svg', [0.5*(boundingBox[2]+boundingBox[0])+0.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n///////////////////////////////////////////////////////////\r\nexport function placeLeft(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['https://s3.amazonaws.com/edliy.com/assets/undo.svg', [0.5*(boundingBox[2]+boundingBox[0])-1.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n///////////////////////////////////////////\r\nexport function placeUndo(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/previous.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n/////////////////////////////////////////////\r\nexport function placeRedo(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/next.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////////////////////////\r\nexport function placeDynamic(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['assets/dynamic.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n///////////////////////////////////////////\r\nexport function placeStatic(board, loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/static.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n///////////////////////////////////////////////////////////\r\nexport function placeErase(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['/assets/eraser.svg', [0.5*(boundingBox[2]+boundingBox[0])+0.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n////////////////////////////////////\r\nexport function placeEraseLeft(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['https://s3.amazonaws.com/edliy.com/assets/eraser.svg', [0.5*(boundingBox[2]+boundingBox[0])-1.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////\r\nexport function placeStat(board)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  let im =board.create('image', ['https://s3.amazonaws.com/edliy.com/assets/statistics.svg', [0.5*(boundingBox[2]+boundingBox[0])+0.4*size, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n/////////////////////////////////////\r\nexport function makeResponsive(board) {\r\n    let resizeFunction = function() {\r\n        const bb = board.attr.boundingbox;\r\n        board.resizeContainer(board.containerObj.clientWidth,\r\n                              board.containerObj.clientHeight,\r\n                              true,\r\n                              true);\r\n        board.setBoundingBox(bb);\r\n        board.fullUpdate();\r\n    };\r\n    window.addEventListener(\"resize\", resizeFunction);\r\n}\r\n////////////////////////////////////////PLACE ANGLE/////////////////////////////\r\nexport function drawAngle(board, Pt1, Pt2, Pt3){\r\n  const lm = {\r\n    radius:0.5,\r\n    strokeWidth:1,\r\n    strokeColor:'black',\r\n    fillColor:'red',\r\n    highlight:false,\r\n    radiusPoint:{visible:false},\r\n    label:{color:'black', anchorX:'middle', anchorY:'middle', fontSize:function(){return 24*board.canvasHeight/800},\r\n    cssStyle:'fontFamily:Oswald;'}\r\n    }\r\n  let le=board.create('nonreflexangle', [Pt1, Pt2, Pt3], lm);\r\n  le.setAttribute({center:{visible:true}, radiusPoint:{visible:true}, anglePoint:{visible:true}});\r\n  return le;\r\n}\r\n//////////////////////////////\r\nexport function print(board, value)\r\n{\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/12;\r\n  const positionX = -(boundingBox[2]-boundingBox[0])/2+0.5;\r\n  const positionY = (boundingBox[2]-boundingBox[0])/2-0.5;\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'html',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(18*board.canvasWidth /800.)\r\n};\r\nprintArray.push(value);\r\nlet i = printArray.length-1;\r\nboard.create('text', [positionX, positionY-i, printArray[i]], m);\r\n}\r\n///////////////////////////////////////////LINE////////////////////////////////\r\nexport function drawSegment(board, Pt1, Pt2){\r\n  const lm ={\r\n  fixed:true,\r\n  visible:true,\r\n  strokeColor:'black',\r\n  highlight:false,\r\n  dash:0,\r\n  strokeWidth: () => Math.round(2*board.canvasWidth /800.)};\r\n  let le=board.create('segment', [[()=>Pt1.X(), ()=>Pt1.Y()],[()=>Pt2.X(), ()=>Pt2.Y()]] , lm);\r\n  return le;\r\n}\r\n/////////////////////////////////////////////////////////////////////////////\r\nexport function drawLine(board, Pt1, Pt2){\r\n  const lm ={\r\n  fixed:true,\r\n  strokeColor:'black',\r\n  highlight:false,\r\n  strokeWidth: () => Math.round(2*board.canvasWidth /800.)};\r\n  let le=board.create('line', [[()=>Pt1.X(), ()=>Pt1.Y()],[()=>Pt2.X(), ()=>Pt2.Y()]] , lm);\r\n  return le;\r\n}\r\n/////////////////////////////////////////////////////////////////////\r\nexport function drawPoint(board, positionX, positionY){\r\n     board.options.point.showInfoBox=false;\r\n     const ptA = {\r\n       name:'',\r\n       label: {\r\n         display:'internal'\r\n       },\r\n       size: ()=>Math.round(2*board.canvasWidth/800.),\r\n       fillColor:'red',\r\n       visible:true,\r\n       strokeColor:'red',\r\n       highlight:false};\r\n     let ptM =board.create('point', [positionX, positionY], ptA);\r\n     return ptM;\r\n   }\r\n///////////////////////////////////////////////////////\r\nexport function drawCircle(board, Pt1, Pt2){\r\n  const lm ={\r\n  fixed:true,\r\n  strokeColor:'red',\r\n  fillColor:'white',\r\n  fillOpacity:0,\r\n  highlight:false,\r\n  strokeWidth: () => Math.round(4*board.canvasWidth /800.)};\r\n  let le=board.create('circle', [[()=>Pt1.X(), ()=>Pt1.Y()],[()=>Pt2.X(), ()=>Pt2.Y()]], lm);\r\n  return le;\r\n}\r\n////////////////////////////////\r\nexport function plotFunction(board, fx, xmin, xmax)\r\n{\r\n  const lm ={\r\n  fixed:true,\r\n  strokeColor:'red',\r\n  highlight:false,\r\n  strokeWidth: () => Math.round(4*board.canvasWidth /800.)};\r\n  let pt = board.create('functiongraph',\r\n                         [fx, xmin, xmax],lm);\r\n  return pt;\r\n}\r\n//////////////////////////////////////////////////////\r\nexport function writeSmallText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(18*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\n///////////////////////////////////////\r\nexport function writeMediumText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\n/////////////////////////////////////////////////\r\nexport function writeLargeText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(30*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\n///////////////////////////////////////////////////\r\nexport function setColor(board, obj, cols){\r\n  obj.setAttribute({\r\n  strokeColor:cols,\r\n  fillColor:cols});\r\n}\r\nexport function setWidth(board, obj, width){\r\n  obj.setAttribute({\r\n  strokeWidth: () => Math.round(width*board.canvasWidth /800.)});\r\n}\r\nexport function setSize(board, obj, size){\r\n  obj.setAttribute({\r\n  size: () => Math.round(size*board.canvasWidth /800.)});\r\n}\r\nexport function labelIt(board, obj, namee){\r\n  obj.setAttribute({name:namee});\r\n  obj.label.setAttribute({\r\n      color:'black',\r\n      offset:[0,20],\r\n      cssStyle:'fontFamily:Oswald',\r\n      fontSize:()=>Math.round(20*board.canvasWidth/800.)\r\n      })\r\n}\r\nexport function showInfo(board, obj){\r\n  board.options.point.showInfoBox=true\r\n}\r\nexport function setFix(board, obj){\r\n  obj.setAttribute({\r\n  fixed:true})\r\n}\r\n//////////////////////////////////////////////////////\r\nexport function drawDash(board, Pt1, Pt2){\r\n  const lm ={\r\n  fixed:true,\r\n  dash:1,\r\n  strokeColor:'red',\r\n  highlight:false,\r\n  strokeWidth: () => Math.round(2*board.canvasWidth /800.)};\r\n  let le=board.create('segment', [[()=>Pt1.X(), ()=>Pt1.Y()],[()=>Pt2.X(), ()=>Pt2.Y()]] , lm);\r\n  return le;\r\n}\r\n/////////////////////////// Arc /////////////////////////////\r\nexport function drawArc(board, Pt1, Pt2, Pt3){\r\n  const lm ={\r\n  fixed:true,\r\n  dash:1,\r\n  strokeColor:'red',\r\n  fillOpacity:1,\r\n  highlight:false,\r\n  strokeWidth: () => Math.round(2*board.canvasWidth /800.)};\r\n  let le=board.create('arc', [[()=>Pt1.X(), ()=>Pt1.Y()],[()=>Pt2.X(), ()=>Pt2.Y()],[()=>Pt3.X(), ()=>Pt3.Y()]], lm);\r\n  le.setAttribute({center:{visible:false}, radiusPoint:{visible:false}, anglePoint:{visible:false}});\r\n  return le;\r\n}\r\n////////////////////////////////Arrow//////////////////////////////\r\nexport function drawArrow(board, pt1, pt2){\r\n     const recAttributes = {\r\n       strokeWidth: () => Math.round(2*board.canvasWidth/800.),\r\n       strokeColor:'red',\r\n       highlight:false,\r\n       fillOpacity:1.0}\r\n     let m =board.create('arrow', [[()=>pt1.X(), ()=>pt1.Y()],\r\n                                    [()=>pt2.X(), ()=>pt2.Y()]], recAttributes);\r\n     return m;\r\n   }\r\n//////////////////////////////////////TEXT/////////////////////////////\r\nexport function placeText(board, positionX, positionY, size, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(size*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\n////////////////////////////////////////////////////////\r\nexport function writeHTMLText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  visible:true,\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeMiddleText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  visible:true,\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeLeftText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'internal',\r\n  visible:true,\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeRightText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'right',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  visible:true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeBoldText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'middle',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  visible:true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;fontWeight:bold',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeBoldRightText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'right',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;fontWeight:bold',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\nexport function placeBoldLeftText(board, positionX, positionY, message){\r\n  const m ={\r\n  anchorX: 'left',\r\n  display: 'internal',\r\n  highlight: false,\r\n  fixed: true,\r\n  anchorY: 'middle',\r\n  CssStyle: 'fontFamily:Oswald;fontWeight:bold',\r\n  highlight:false,\r\n  fontSize: () => Math.round(24*board.canvasWidth /800.)};\r\n  let ele =board.create('text', [positionX, positionY, message], m)\r\n  return ele;\r\n}\r\n/////////////////////////// Draggable Point/////////////////////////////////////\r\nexport function dragMe(board, positionX, positionY){\r\n   const pointAttributes ={\r\n    name:'Drag me',\r\n    size:3,\r\n    strokeColor:'black',\r\n    fillColor:'white',\r\n    fixed:false,\r\n    label:{color:'blue',\r\n           offset:[0,20],\r\n           cssStyle:'fontFamily:Oswald',\r\n           fontSize:()=>Math.round(16*board.canvasWidth/800.)\r\n          }\r\n   };\r\n   let pt = board.create('point',[positionX, positionY], pointAttributes);\r\n   return [pt];\r\n   }\r\n//////////////////////////HiddenPoint////////////////////////////////////////\r\nexport function hiddenPt(board, positionX, positionY){\r\n   const pointAttributes ={\r\n    name:'Drag me',\r\n    size:3,\r\n    strokeColor:'black',\r\n    fillColor:'white',\r\n    fixed:false,\r\n    visible:false,\r\n    label:{color:'blue',\r\n           offset:[0,20],\r\n           cssStyle:'fontFamily:Oswald',\r\n           fontSize:()=>Math.round(16*board.canvasWidth/800.)\r\n          }\r\n   };\r\n   let pt = board.create('point',[positionX, positionY], pointAttributes);\r\n   return pt;\r\n   }\r\n///////////////////////////FixedPoint/////////////////////////////////////////\r\nexport function fixedPt(board, positionX, positionY, size, name, cols1, cols2){\r\n   const pointAttributes ={\r\n    name:name,\r\n    size: ()=>Math.round(size*board.canvasWidth/800.),\r\n    strokeWidth:()=>Math.ceil(2*board.canvasWidth/800.),\r\n    fillColor:cols1,\r\n    strokeColor:cols2,\r\n    highlight:false,\r\n    fixed:true,\r\n    label:{color:'blue',\r\n           offset:[0,20],\r\n           cssStyle:'fontFamily:Oswald',\r\n           fontSize:()=>Math.round(16*board.canvasWidth/800.)\r\n          }\r\n   };\r\n   let pt = board.create('point',[positionX, positionY], pointAttributes);\r\n   return pt;\r\n   }\r\n/////////////////////////////////////////////////////////////////////////////\r\n//////////////////////////////Gravity ////////////////////////////////////////\r\nexport function placeGlider(board, line, positionX, positionY, size, cols1, cols2){\r\n     const ptA = {\r\n       name:'',\r\n       size: ()=>Math.round(size*board.canvasWidth/800.),\r\n       strokeWidth:()=>Math.ceil(2*board.canvasWidth/800.),\r\n       fillColor:cols1,\r\n       strokeColor:cols2,\r\n       highlight:false};\r\n     let ptM =board.create('glider', [positionX, positionY, line], ptA);\r\n     return ptM;\r\n   }\r\n//////////////////////////////////////////////////////////////////////////////////\r\nexport function placeGravity(board, pt1, pt2, val)\r\n {\r\n     const arrowAttributes = {\r\n       fixed:true,\r\n       highlight:false,\r\n       strokeWidth: () => Math.round(3*board.canvasWidth/800.),\r\n       strokeColor:'black',\r\n       fillOpacity:1.0\r\n     };\r\n     const gAttributes={\r\n       fixed:true,\r\n       highlight:false,\r\n       anchorX: 'left',\r\n       anchorY:'middle',\r\n       color:'black',\r\n       CssStyle: 'font-weight:bold; fontFamily:Oswald;',\r\n       fontSize: () => Math.round(24*board.canvasWidth/800.)\r\n     };\r\n     let gtext =board.create('text', [0.5*(pt1[0]+pt2[0])+Math.abs(pt1[1]-pt2[1])*0.25, 0.5*(pt1[1]+pt2[1])+Math.abs(pt1[0]-pt2[0])*0.25, val], gAttributes);\r\n     let garrow=board.create('arrow', [\r\n                                     [pt1[0], pt1[1]],\r\n                                     [pt2[0], pt2[1]]\r\n                                     ], arrowAttributes);\r\n\r\n     return [garrow, gtext];\r\n   }\r\n///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeRuler(board, pt1, pt2, val)\r\n   {\r\n       const arrowAttributes = {\r\n         fixed:true,\r\n         highlight:false,\r\n         strokeWidth: () => Math.round(3*board.canvasWidth/800.),\r\n         strokeColor:'black',\r\n         fillOpacity:1.0\r\n       };\r\n       const gAttributes={\r\n         fixed:true,\r\n         highlight:false,\r\n         anchorX: 'middle',\r\n         anchorY:'middle',\r\n         color:'black',\r\n         display:'internal',\r\n         CssStyle: 'font-weight: bold;fontFamily:Oswald;',\r\n         fontSize: ()=>Math.round(28*board.canvasWidth/800.)\r\n       };\r\n       let garrow=board.create('arrow', [[pt1[0], pt1[1]],[pt2[0], pt2[1]]], arrowAttributes);\r\n       let gtext =board.create('text',[0.5*(1.00*pt1[0]+1.00*pt2[0])+Math.abs(1.00*pt1[1]-1.00*pt2[1])*0.25, 0.5*(1.00*pt1[1]+1.00*pt2[1])+Math.abs(1.00*pt1[0]-1.00*pt2[0])*0.25, val], gAttributes);\r\n       return [garrow, gtext];\r\n    }\r\n///////////////////////////////////////////////////////////////////////////////\r\nexport function placeTape(board, pt1, pt2, val)\r\n   {\r\n       const arrowAttributes = {\r\n         name:val,\r\n         fixed:true,\r\n         point1:{face:'circle', size:2, fillColor:'red'},\r\n         point2:{face:'circle', size:2, fillColor:'red'},\r\n         highlight:false,\r\n         strokeWidth: () => Math.round(3*board.canvasWidth/800.),\r\n         strokeColor:'black',\r\n         fillOpacity:1.0,\r\n         label:{fixed:true,\r\n         highlight:false,\r\n         anchorX: 'left',\r\n         anchorY:'middle',\r\n         color:'black',\r\n         display:'internal',\r\n         CssStyle: 'font-weight:normal; fontFamily: Oswald;',\r\n         fontSize: () => Math.round(28*board.canvasWidth /800.)}\r\n       };\r\n       const gAttributes={\r\n         fixed:true,\r\n         highlight:false,\r\n         anchorX: 'middle',\r\n         anchorY:'middle',\r\n         color:'black',\r\n         display:'internal',\r\n         CssStyle: 'font-weight: bold; fontFamily: Oswald;',\r\n         fontSize: () => Math.round(28*board.canvasWidth /800.)\r\n       };\r\n       let garrow=board.create('tapemeasure', [[pt1[0], pt1[1]],[pt2[0], pt2[1]]], arrowAttributes);\r\n       //let gtext =board.create('text',[0.5*(1.00*pt1[0]+1.00*pt2[0])+Math.abs(1.00*pt1[1]-1.00*pt2[1])*0.25, 0.5*(1.00*pt1[1]+1.00*pt2[1])+Math.abs(1.00*pt1[0]-1.00*pt2[0])*0.25, val], gAttributes);\r\n       return garrow;\r\n    }\r\n/////////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeTapeHori(board, pt1, pt2, val)\r\n   {\r\n       const arrowAttributes = {\r\n         name:val,\r\n         fixed:true,\r\n         point1:{face:'circle', size:Math.round(2*board.canvasWidth/800.), fillColor:'black', fillOpacity:1},\r\n         point2:{face:'circle', size:Math.round(2*board.canvasWidth/800.), fillColor:'black', fillOpacity:1},\r\n         highlight:false,\r\n         strokeWidth: () => Math.round(3*board.canvasWidth/800.),\r\n         strokeColor:'black',\r\n         fillOpacity:1.0,\r\n         label:{fixed:true,\r\n         highlight:false,\r\n         anchorX: 'middle',\r\n         anchorY:'bottom',\r\n         color:'black',\r\n         display:'internal',\r\n         CssStyle: 'font-weight:normal; fontFamily: Oswald;',\r\n         fontSize: () => Math.round(20*board.canvasWidth /800.)}\r\n       };\r\n       let garrow=board.create('tapemeasure', [[()=>pt1.X(), ()=>pt1.Y()],[()=>pt2.X(), ()=>pt2.Y()]], arrowAttributes);\r\n       //let gtext =board.create('text',[0.5*(1.00*pt1[0]+1.00*pt2[0])+Math.abs(1.00*pt1[1]-1.00*pt2[1])*0.25, 0.5*(1.00*pt1[1]+1.00*pt2[1])+Math.abs(1.00*pt1[0]-1.00*pt2[0])*0.25, val], gAttributes);\r\n       return garrow;\r\n    }\r\n/////////////////////////////////////////////////////////\r\nexport function placeTapeVert(board, pt1, pt2, val)\r\n   {\r\n       const arrowAttributes = {\r\n         name:val,\r\n         fixed:true,\r\n         point1:{face:'circle', size:Math.round(2*board.canvasWidth/800.), fillColor:'black', fillOpacity:1},\r\n         point2:{face:'circle', size:Math.round(2*board.canvasWidth/800.), fillColor:'black', fillOpacity:1},\r\n         highlight:false,\r\n         strokeWidth: () => Math.round(3*board.canvasWidth/800.),\r\n         strokeColor:'black',\r\n         fillOpacity:1.0,\r\n         label:{fixed:true,\r\n         highlight:false,\r\n         anchorX: 'left',\r\n         anchorY:'middle',\r\n         color:'black',\r\n         display:'internal',\r\n         CssStyle: 'font-weight:normal; fontFamily: Oswald;',\r\n         fontSize: () => Math.round(20*board.canvasWidth /800.)}\r\n       };\r\n       let garrow=board.create('tapemeasure', [[()=>pt1.X(), ()=>pt1.Y()],[()=>pt2.X(), ()=>pt2.Y()]], arrowAttributes);\r\n       //let gtext =board.create('text',[0.5*(1.00*pt1[0]+1.00*pt2[0])+Math.abs(1.00*pt1[1]-1.00*pt2[1])*0.25, 0.5*(1.00*pt1[1]+1.00*pt2[1])+Math.abs(1.00*pt1[0]-1.00*pt2[0])*0.25, val], gAttributes);\r\n       return garrow;\r\n    }\r\n///////////////////////////////////////Polygon////////////////////////////////////////\r\nexport function placeRec(board, pt1, pt2, pt3, pt4, cols){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:cols,\r\n    fillOpacity:1.0}\r\n  let m =board.create('polygon', [[pt1[0], pt1[1]],\r\n                                 [pt2[0], pt2[1]],\r\n                                 [pt3[0], pt3[1]],\r\n                                 [pt4[0], pt4[1]]], recAttributes);\r\n  return m;\r\n}\r\n/////////////////////////////////////////////////////////////////\r\nexport function placeSq(board, pt1, pt2, cols){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:cols,\r\n    fillOpacity:1.0}\r\n  let m =board.create('polygon', [[pt1[0], pt1[1]],\r\n                                 [pt2[0], pt1[1]],\r\n                                 [pt2[0], pt2[1]],\r\n                                 [pt1[0], pt2[1]]], recAttributes);\r\n  return m;\r\n}\r\n/////////////////////////////////////////////////////////////////\r\nexport function drawRec(board, pt1, pt2){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:'blue',\r\n    fillOpacity:1.0,\r\n    hasInnerPoints:true}\r\n    let m =board.create('polygon', [\r\n    [()=>pt1.X(), ()=>pt1.Y()],\r\n    [()=>pt1.X(), ()=>pt2.Y()],\r\n    [()=>pt2.X(), ()=>pt2.Y()],\r\n    [()=>pt2.X(), ()=>pt1.Y()]], recAttributes);\r\n  return m;\r\n}\r\n///////////////////////////////////////////////////////////////////\r\nexport function drawTriangle(board, pt1, pt2, pt3){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:'blue',\r\n    fillOpacity:1,\r\n    hasInnerPoints:true}\r\n  let m =board.create('polygon', [[()=>pt1.X(), ()=>pt1.Y()], [()=>pt2.X(), ()=>pt2.Y()],\r\n  [()=>pt3.X(), ()=>pt3.Y()]], recAttributes);\r\n  return m;\r\n}\r\n/////////////////////////////////////////////////////////////\r\nexport function drawSq(board, pt1, pt2){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:'blue',\r\n    fillOpacity:1,\r\n    hasInnerPoints:true}\r\n  let m =board.create('polygon', [\r\n  [()=>pt1.X(), ()=>pt1.Y()],\r\n  [()=>pt1.X(), ()=>pt2.Y()],\r\n  [()=>pt2.X(), ()=>pt2.Y()],\r\n  [()=>pt2.X(), ()=>pt1.Y()]], recAttributes);\r\n  return m;\r\n}\r\n//////////////////////////////////////////////Circle////////////////////////\r\nexport function drawRegPoly(board, pt1, pt2, n){\r\n  const recAttributes = {\r\n    vertices:{visible:false, fixed:true},\r\n    borders:{visible:false},\r\n    highlight:false,\r\n    fillColor:'blue',\r\n    fillOpacity:1,\r\n    hasInnerPoints:true}\r\n  let m =board.create('regularpolygon', [\r\n  [()=>pt1.X(), ()=>pt1.Y()],\r\n  [()=>pt2.X(), ()=>pt2.Y()], n], recAttributes);\r\n  return m\r\n}\r\n/////////////////////////////////////\r\nexport function placeSlider(board, positionX, positionY, limit1, start, limit2, length, name)\r\n{\r\n  const sliderAttributes={\r\n    baseline:{strokeWidth:8*board.canvasHeight/800, strokeColor:'grey', highlight:false, lineCap:'round'},\r\n    highline:{strokeWidth:8*board.canvasHeight/800, strokeColor:'black', highlight:false, lineCap:'round'},\r\n    name:name,\r\n    highlight:false,\r\n    size:()=>8*board.canvasHeight/800,\r\n    face:'circle',\r\n    fillColor:'grey',\r\n    strokeColor:'black',\r\n    withTicks:false,\r\n    precision:2,\r\n    label:{fontSize:()=> Math.round(18*board.canvasWidth/800.), offset:[15,0],\r\n    cssStyle:'fontFamily:Oswald;', highlight:false}\r\n  }\r\n   let m = board.create('slider',[[positionX, positionY],[positionX+length, positionY],[limit1, start, limit2]], sliderAttributes);    //\r\n   return m;\r\n}\r\n//////////////////////////////////////////////////////////////////////\r\n///////////////////////////////////////////////////////////\r\nexport function placeStartOver(board,loc)\r\n{\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0,\r\n  };\r\n  const boundingBox = board.attr.boundingbox;\r\n  const size =(boundingBox[2]-boundingBox[0])/13;\r\n  const x = function(){if(loc=='left')\r\n  {return  0.5*(boundingBox[2]+boundingBox[0])-1.4*size\r\n  }\r\n  else{\r\n    return 0.5*(boundingBox[2]+boundingBox[0])+0.4*size\r\n      }\r\n  }\r\n  let im =board.create('image', ['/assets/replay.svg', [x, boundingBox[3]+0.50*size],[size,size]], imageAttributes);\r\n  return im;\r\n}\r\n//////////////////////////////////////////////////////////////////////////////////\r\nexport function placeSliderSwitch(board, positionX, positionY, limit1, limit2, length, name)\r\n{\r\n  const sliderAttributes={\r\n    baseline:{strokeWidth:7*board.canvasHeight/800,strokeColor:'grey'},\r\n    highline:{strokeWidth:7*board.canvasHeight/800,strokeColor:'black'},\r\n    name:name,\r\n    size:()=>8*board.canvasHeight/800,\r\n    highlight:false,\r\n    face:'square',\r\n    fillColor:'#FF0000',\r\n    strokeColor:'black',\r\n    snapWidth:1,\r\n    withTicks:false,\r\n    label:{anchorX:'left',fontSize:()=> Math.round(24*board.canvasWidth/800.),\r\n    cssStyle:'fontFamily:Oswald;'}\r\n  }\r\n   let m = board.create('slider',[[positionX, positionY],[positionX+length, positionY],[limit1, 0.5*(limit1+limit2), limit2]], sliderAttributes);    //\r\n   return m;\r\n}\r\n/////////////////////////////////////////////////////////////////\r\nexport function placeImage(board, imValue, positionX, positionY){\r\n  const imageAttributes ={\r\n   opacity:1,\r\n   fixed:true,\r\n   rotate:0\r\n  };\r\n   let im =board.create('image', [imValue, [positionX, positionY],[1,1]], imageAttributes);\r\n   return im;\r\n}\r\n//////////////////////////////////////////////////////////\r\nexport function placeInput(board, positionX, positionY, val){\r\n  const inputAttributes ={\r\n    fixed: true,\r\n    cssStyle: 'fontFamily:Oswald; width:10%; background-color:#008CBA;border:1px solid black;border-radius:3.5px;',\r\n    fontSize:function(){return Math.round(24*board.canvasWidth/800.)},\r\n    fixed:true,\r\n    alignY:'bottom',\r\n    parse:true\r\n  }\r\n   let inp =board.create('input', [positionX, positionY, val, ''], inputAttributes);\r\n   return inp;\r\n}\r\n///////////////////////////////Shuffle Function ////////////////////////////\r\nexport function shuffle(listName, varName){\r\n  if(varName<listName.length-1)\r\n  {\r\n    return varName +=1;\r\n  }\r\n  else{\r\n    return varName=0;\r\n  }\r\n}\r\n///////////////////////////////////////////////////////////////////////////////\r\nexport function toggle(i){\r\n  if(i==0)\r\n  {\r\n    return 1;\r\n  }\r\n  else{\r\n    return 0;\r\n  }\r\n}\r\n/////////////////////////////////////////////////////////////////////////\r\nexport function toggleTF(i){\r\n  if(i==true)\r\n  {\r\n    return false;\r\n  }\r\n  else{\r\n    return true;\r\n  }\r\n}\r\n/////////////////////////////////////////Hover Over //////////////////////////////\r\nexport function hoverMe(board, element, message, Xoffset, Yoffset)\r\n{\r\n  element.setLabel(message);\r\n  element.label.setAttribute({visible:false, anchorX:'left', anchorY:'top',\r\n                              offset:[Xoffset, Yoffset],\r\n                              CssStyle:'fontFamily:Oswald;color:black',\r\n                              fontSize:function(){return Math.round(18*board.canvasWidth/800.)}});\r\n  element.on('over', function () {this.label.setAttribute({visible:true});});\r\n  element.on('out', function () {this.label.setAttribute({visible:false});});\r\n}\r\n//////////////////////////////////////////////////////////////////////////////////////////\r\nexport function placeLabel(board, element, message, Xoffset, Yoffset)\r\n{\r\n  element.setLabel(message);\r\n  element.label.setAttribute({\r\n                              offset:[Xoffset, Yoffset],\r\n                              anchorX:'left',\r\n                              anchorY:'middle',\r\n                              CssStyle:'fontFamily:Oswald;',\r\n                              fontSize:function(){return Math.round(18*board.canvasWidth/800.)}});\r\n}\r\n/////////////////////////////////////////////////////////////////////////\r\nexport function placeScore(board, titleText)\r\n{\r\n  const commonTextAttributes = {\r\n      anchorX: 'middle',\r\n      display: 'html',\r\n      highlight: false,\r\n      fixed: true,\r\n\t  visible:true\r\n  };\r\n  const titleTextAttributes = {\r\n      ...commonTextAttributes,\r\n      anchorY: 'middle',\r\n      CssStyle: 'font-weight: bold; fontFamily: Oswald;',\r\n      highlight:false,\r\n      fontSize: () => Math.round(32 * board.canvasWidth /800.)\r\n  };\r\n\r\n  const boundingBox = board.attr.boundingbox;\r\n\r\n  let title = board.create(\r\n      'text',\r\n      [(boundingBox[0] + boundingBox[2]) / 2.0,\r\n       (boundingBox[1] + boundingBox[3]) / 2.0,\r\n       function(){return titleText+'/5'}], titleTextAttributes);\r\n\r\n  return title;\r\n}\r\n///////////////////////////////////////////////////////////////////////\r\nexport function placeWhite(board){\r\n  const imageAttributes ={\r\n   opacity:0,\r\n   fixed:true,\r\n   visible:true\r\n  };\r\n    const boundingBox = board.attr.boundingbox;\r\n    const size = 20;\r\n    let im =board.create('image', ['/assets/square.svg', [(boundingBox[0] + boundingBox[2]-size) / 2.0,\r\n    (boundingBox[1] + boundingBox[3]-size) / 2.0,],[size, size]], imageAttributes);\r\n   return im;\r\n}\r\n//////////////////////////////////////////////////////////////////////////////\r\nexport function placeTitle(board, titleText, subTitleText){\r\n    const commonTextAttributes = {\r\n        anchorX: 'middle',\r\n        display: 'internal',\r\n        highlight: false,\r\n        fixed: true\r\n    };\r\n    const titleTextAttributes = {\r\n        ...commonTextAttributes,\r\n        anchorY: 'middle',\r\n        CssStyle: 'font-weight: bold; fontFamily: Oswald;',\r\n        highlight:false,\r\n        fontSize: () => Math.round(32 * board.canvasWidth /800.)\r\n    };\r\n    const subTitleTextAttributes = {\r\n        ...commonTextAttributes,\r\n        anchorY: 'middle',\r\n        CssStyle: 'fontFamily: Oswald;',\r\n        highlight:false,\r\n        fontSize: () => Math.round(24 * board.canvasWidth /800.)\r\n    };\r\n    const boundingBox = board.attr.boundingbox;\r\n    const offset = [0, -(boundingBox[2] - boundingBox[0])/20.0];\r\n    let title = board.create(\r\n        'text',\r\n        [(boundingBox[0] + boundingBox[2]) / 2.0 + offset[0],\r\n         boundingBox[1] + offset[1],\r\n         titleText],\r\n        titleTextAttributes\r\n    );\r\n    let subtitle = board.create(\r\n        'text',\r\n        [(boundingBox[0] + boundingBox[2]) / 2.0 + offset[0],\r\n         boundingBox[1] + 2*offset[1],\r\n         subTitleText],\r\n        subTitleTextAttributes\r\n    );\r\n    return [title, subtitle];\r\n}\r\n/////////////////////////////////////////////////////////////////////////////\r\nexport function clearInputFields(board) {\r\n    let magicGraph = board.containerObj;\r\n    let inputFields = magicGraph.querySelectorAll(\"input\");\r\n    for (let inputField of inputFields) {\r\n        inputField.value = \"\"\r\n    }\r\n}\r\n/////////////////////////////////////////////////////////////////////////////\r\nexport function setInputFieldAnswerColor(inputObject, isAnswerCorrect) {\r\n  // TODO: Tableau colors don't look great with blue background, find a\r\n  // different color scheme that looks better.\r\n  let colorizeElement = function (element, condition) {\r\n    if (element) {\r\n      if (condition) {\r\n        // element.style.borderColor = '#59A14F';\r\n        element.style.backgroundColor = 'green';\r\n      } else {\r\n        // element.style.borderColor = '#E15759';\r\n        element.style.backgroundColor = 'red';\r\n      }\r\n    }\r\n  }\r\n\r\n  colorizeElement(inputObject.rendNodeInput, isAnswerCorrect);\r\n  colorizeElement(inputObject.rendNode, isAnswerCorrect);\r\n}\r\n/////////////////////////////////////////////////////////////\r\nexport function markInteractive(inputObject) {\r\n  let board = inputObject.board;\r\n  if (!board._xedliy) {\r\n    board._xedliy = {};\r\n  }\r\n\r\n  if (!board._xedliy.interactive) {\r\n    let magicGraph = board.containerObj;\r\n    let svgs = magicGraph.querySelectorAll(\"svg\");\r\n    for (let svg of svgs) {\r\n      svg.style.pointerEvents = \"none\";\r\n    }\r\n    board._xedliy.interactive = true;\r\n  }\r\n\r\n  if (inputObject) {\r\n    // console.log(inputObject);\r\n    inputObject.rendNode.style.cursor = \"pointer\";\r\n    inputObject.rendNode.style.pointerEvents = \"all\";\r\n  }\r\n}\r\n///////////////////////////////////////////////////////////////\r\n","exports.f = require('./_wks');\n","// 21.2.5.3 get RegExp.prototype.flags()\nif (require('./_descriptors') && /./g.flags != 'g') require('./_object-dp').f(RegExp.prototype, 'flags', {\n  configurable: true,\n  get: require('./_flags')\n});\n","var global = require('./_global');\nvar core = require('./_core');\nvar LIBRARY = require('./_library');\nvar wksExt = require('./_wks-ext');\nvar defineProperty = require('./_object-dp').f;\nmodule.exports = function (name) {\n  var $Symbol = core.Symbol || (core.Symbol = LIBRARY ? {} : global.Symbol || {});\n  if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) });\n};\n","'use strict';\nrequire('./es6.regexp.flags');\nvar anObject = require('./_an-object');\nvar $flags = require('./_flags');\nvar DESCRIPTORS = require('./_descriptors');\nvar TO_STRING = 'toString';\nvar $toString = /./[TO_STRING];\n\nvar define = function (fn) {\n  require('./_redefine')(RegExp.prototype, TO_STRING, fn, true);\n};\n\n// 21.2.5.14 RegExp.prototype.toString()\nif (require('./_fails')(function () { return $toString.call({ source: 'a', flags: 'b' }) != '/a/b'; })) {\n  define(function toString() {\n    var R = anObject(this);\n    return '/'.concat(R.source, '/',\n      'flags' in R ? R.flags : !DESCRIPTORS && R instanceof RegExp ? $flags.call(R) : undefined);\n  });\n// FF44- RegExp#toString has a wrong name\n} else if ($toString.name != TO_STRING) {\n  define(function toString() {\n    return $toString.call(this);\n  });\n}\n","// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nvar toIObject = require('./_to-iobject');\nvar gOPN = require('./_object-gopn').f;\nvar toString = {}.toString;\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames\n  ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function (it) {\n  try {\n    return gOPN(it);\n  } catch (e) {\n    return windowNames.slice();\n  }\n};\n\nmodule.exports.f = function getOwnPropertyNames(it) {\n  return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));\n};\n","var DateProto = Date.prototype;\nvar INVALID_DATE = 'Invalid Date';\nvar TO_STRING = 'toString';\nvar $toString = DateProto[TO_STRING];\nvar getTime = DateProto.getTime;\nif (new Date(NaN) + '' != INVALID_DATE) {\n  require('./_redefine')(DateProto, TO_STRING, function toString() {\n    var value = getTime.call(this);\n    // eslint-disable-next-line no-self-compare\n    return value === value ? $toString.call(this) : INVALID_DATE;\n  });\n}\n","'use strict';\n// ECMAScript 6 symbols shim\nvar global = require('./_global');\nvar has = require('./_has');\nvar DESCRIPTORS = require('./_descriptors');\nvar $export = require('./_export');\nvar redefine = require('./_redefine');\nvar META = require('./_meta').KEY;\nvar $fails = require('./_fails');\nvar shared = require('./_shared');\nvar setToStringTag = require('./_set-to-string-tag');\nvar uid = require('./_uid');\nvar wks = require('./_wks');\nvar wksExt = require('./_wks-ext');\nvar wksDefine = require('./_wks-define');\nvar enumKeys = require('./_enum-keys');\nvar isArray = require('./_is-array');\nvar anObject = require('./_an-object');\nvar isObject = require('./_is-object');\nvar toObject = require('./_to-object');\nvar toIObject = require('./_to-iobject');\nvar toPrimitive = require('./_to-primitive');\nvar createDesc = require('./_property-desc');\nvar _create = require('./_object-create');\nvar gOPNExt = require('./_object-gopn-ext');\nvar $GOPD = require('./_object-gopd');\nvar $GOPS = require('./_object-gops');\nvar $DP = require('./_object-dp');\nvar $keys = require('./_object-keys');\nvar gOPD = $GOPD.f;\nvar dP = $DP.f;\nvar gOPN = gOPNExt.f;\nvar $Symbol = global.Symbol;\nvar $JSON = global.JSON;\nvar _stringify = $JSON && $JSON.stringify;\nvar PROTOTYPE = 'prototype';\nvar HIDDEN = wks('_hidden');\nvar TO_PRIMITIVE = wks('toPrimitive');\nvar isEnum = {}.propertyIsEnumerable;\nvar SymbolRegistry = shared('symbol-registry');\nvar AllSymbols = shared('symbols');\nvar OPSymbols = shared('op-symbols');\nvar ObjectProto = Object[PROTOTYPE];\nvar USE_NATIVE = typeof $Symbol == 'function' && !!$GOPS.f;\nvar QObject = global.QObject;\n// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173\nvar setter = !QObject || !QObject[PROTOTYPE] || !QObject[PROTOTYPE].findChild;\n\n// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687\nvar setSymbolDesc = DESCRIPTORS && $fails(function () {\n  return _create(dP({}, 'a', {\n    get: function () { return dP(this, 'a', { value: 7 }).a; }\n  })).a != 7;\n}) ? function (it, key, D) {\n  var protoDesc = gOPD(ObjectProto, key);\n  if (protoDesc) delete ObjectProto[key];\n  dP(it, key, D);\n  if (protoDesc && it !== ObjectProto) dP(ObjectProto, key, protoDesc);\n} : dP;\n\nvar wrap = function (tag) {\n  var sym = AllSymbols[tag] = _create($Symbol[PROTOTYPE]);\n  sym._k = tag;\n  return sym;\n};\n\nvar isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {\n  return typeof it == 'symbol';\n} : function (it) {\n  return it instanceof $Symbol;\n};\n\nvar $defineProperty = function defineProperty(it, key, D) {\n  if (it === ObjectProto) $defineProperty(OPSymbols, key, D);\n  anObject(it);\n  key = toPrimitive(key, true);\n  anObject(D);\n  if (has(AllSymbols, key)) {\n    if (!D.enumerable) {\n      if (!has(it, HIDDEN)) dP(it, HIDDEN, createDesc(1, {}));\n      it[HIDDEN][key] = true;\n    } else {\n      if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;\n      D = _create(D, { enumerable: createDesc(0, false) });\n    } return setSymbolDesc(it, key, D);\n  } return dP(it, key, D);\n};\nvar $defineProperties = function defineProperties(it, P) {\n  anObject(it);\n  var keys = enumKeys(P = toIObject(P));\n  var i = 0;\n  var l = keys.length;\n  var key;\n  while (l > i) $defineProperty(it, key = keys[i++], P[key]);\n  return it;\n};\nvar $create = function create(it, P) {\n  return P === undefined ? _create(it) : $defineProperties(_create(it), P);\n};\nvar $propertyIsEnumerable = function propertyIsEnumerable(key) {\n  var E = isEnum.call(this, key = toPrimitive(key, true));\n  if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false;\n  return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true;\n};\nvar $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {\n  it = toIObject(it);\n  key = toPrimitive(key, true);\n  if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return;\n  var D = gOPD(it, key);\n  if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;\n  return D;\n};\nvar $getOwnPropertyNames = function getOwnPropertyNames(it) {\n  var names = gOPN(toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);\n  } return result;\n};\nvar $getOwnPropertySymbols = function getOwnPropertySymbols(it) {\n  var IS_OP = it === ObjectProto;\n  var names = gOPN(IS_OP ? OPSymbols : toIObject(it));\n  var result = [];\n  var i = 0;\n  var key;\n  while (names.length > i) {\n    if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]);\n  } return result;\n};\n\n// 19.4.1.1 Symbol([description])\nif (!USE_NATIVE) {\n  $Symbol = function Symbol() {\n    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');\n    var tag = uid(arguments.length > 0 ? arguments[0] : undefined);\n    var $set = function (value) {\n      if (this === ObjectProto) $set.call(OPSymbols, value);\n      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;\n      setSymbolDesc(this, tag, createDesc(1, value));\n    };\n    if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });\n    return wrap(tag);\n  };\n  redefine($Symbol[PROTOTYPE], 'toString', function toString() {\n    return this._k;\n  });\n\n  $GOPD.f = $getOwnPropertyDescriptor;\n  $DP.f = $defineProperty;\n  require('./_object-gopn').f = gOPNExt.f = $getOwnPropertyNames;\n  require('./_object-pie').f = $propertyIsEnumerable;\n  $GOPS.f = $getOwnPropertySymbols;\n\n  if (DESCRIPTORS && !require('./_library')) {\n    redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);\n  }\n\n  wksExt.f = function (name) {\n    return wrap(wks(name));\n  };\n}\n\n$export($export.G + $export.W + $export.F * !USE_NATIVE, { Symbol: $Symbol });\n\nfor (var es6Symbols = (\n  // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14\n  'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'\n).split(','), j = 0; es6Symbols.length > j;)wks(es6Symbols[j++]);\n\nfor (var wellKnownSymbols = $keys(wks.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]);\n\n$export($export.S + $export.F * !USE_NATIVE, 'Symbol', {\n  // 19.4.2.1 Symbol.for(key)\n  'for': function (key) {\n    return has(SymbolRegistry, key += '')\n      ? SymbolRegistry[key]\n      : SymbolRegistry[key] = $Symbol(key);\n  },\n  // 19.4.2.5 Symbol.keyFor(sym)\n  keyFor: function keyFor(sym) {\n    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');\n    for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key;\n  },\n  useSetter: function () { setter = true; },\n  useSimple: function () { setter = false; }\n});\n\n$export($export.S + $export.F * !USE_NATIVE, 'Object', {\n  // 19.1.2.2 Object.create(O [, Properties])\n  create: $create,\n  // 19.1.2.4 Object.defineProperty(O, P, Attributes)\n  defineProperty: $defineProperty,\n  // 19.1.2.3 Object.defineProperties(O, Properties)\n  defineProperties: $defineProperties,\n  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\n  getOwnPropertyDescriptor: $getOwnPropertyDescriptor,\n  // 19.1.2.7 Object.getOwnPropertyNames(O)\n  getOwnPropertyNames: $getOwnPropertyNames,\n  // 19.1.2.8 Object.getOwnPropertySymbols(O)\n  getOwnPropertySymbols: $getOwnPropertySymbols\n});\n\n// Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives\n// https://bugs.chromium.org/p/v8/issues/detail?id=3443\nvar FAILS_ON_PRIMITIVES = $fails(function () { $GOPS.f(1); });\n\n$export($export.S + $export.F * FAILS_ON_PRIMITIVES, 'Object', {\n  getOwnPropertySymbols: function getOwnPropertySymbols(it) {\n    return $GOPS.f(toObject(it));\n  }\n});\n\n// 24.3.2 JSON.stringify(value [, replacer [, space]])\n$JSON && $export($export.S + $export.F * (!USE_NATIVE || $fails(function () {\n  var S = $Symbol();\n  // MS Edge converts symbol values to JSON as {}\n  // WebKit converts symbol values to JSON as null\n  // V8 throws on boxed symbols\n  return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';\n})), 'JSON', {\n  stringify: function stringify(it) {\n    var args = [it];\n    var i = 1;\n    var replacer, $replacer;\n    while (arguments.length > i) args.push(arguments[i++]);\n    $replacer = replacer = args[1];\n    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined\n    if (!isArray(replacer)) replacer = function (key, value) {\n      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);\n      if (!isSymbol(value)) return value;\n    };\n    args[1] = replacer;\n    return _stringify.apply($JSON, args);\n  }\n});\n\n// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)\n$Symbol[PROTOTYPE][TO_PRIMITIVE] || require('./_hide')($Symbol[PROTOTYPE], TO_PRIMITIVE, $Symbol[PROTOTYPE].valueOf);\n// 19.4.3.5 Symbol.prototype[@@toStringTag]\nsetToStringTag($Symbol, 'Symbol');\n// 20.2.1.9 Math[@@toStringTag]\nsetToStringTag(Math, 'Math', true);\n// 24.3.3 JSON[@@toStringTag]\nsetToStringTag(global.JSON, 'JSON', true);\n","require('./_wks-define')('asyncIterator');\n","// all enumerable object keys, includes symbols\nvar getKeys = require('./_object-keys');\nvar gOPS = require('./_object-gops');\nvar pIE = require('./_object-pie');\nmodule.exports = function (it) {\n  var result = getKeys(it);\n  var getSymbols = gOPS.f;\n  if (getSymbols) {\n    var symbols = getSymbols(it);\n    var isEnum = pIE.f;\n    var i = 0;\n    var key;\n    while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);\n  } return result;\n};\n"],"sourceRoot":""}