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h(null,window.phet&&phet.chipper&&phet.chipper.a11yEnabled?{tandem:u.rootTandem.createTandem("display").createTandem("focusProperty"),phetioType:l(R(y))}:{}),e.assertSubtreeDisposed=function(t){},e}),i("JOIST/Heartbeat",["require","JOIST/joist"],function(t){"use strict";var e=!1,i={start:function(t){e=!0;var i=document.createElement("div");i.style.opacity=0,i.style.position="absolute",i.style.left="0",i.style.top="0",i.style.width="0",i.style.height="0",i.style.clip="rect(0,0,0,0)",i.setAttribute("aria-hidden",!0),t.display.domElement.appendChild(i),t.frameStartedEmitter.addListener(function(){t.frameCounter%1e3==0&&(i.innerHTML=Math.random())})}};return t("JOIST/joist").register("Heartbeat",i),i}),i("SCENERY/display/drawables/ImageCanvasDrawable",["require","SCENERY/display/CanvasSelfDrawable","PHET_CORE/inherit","SCENERY/scenery","SCENERY/display/SelfDrawable"],function(t){"use strict";function e(t,e){this.initialize(t,e)}var i=t("SCENERY/display/CanvasSelfDrawable"),n=t("PHET_CORE/inherit"),r=t("SCENERY/scenery"),s=t("SCENERY/display/SelfDrawable");return r.register("ImageCanvasDrawable",e),n(i,e,{initialize:function(t,e){return this.initializeCanvasSelfDrawable(t,e)},paintCanvas:function(t,e,i){var n=1!==e._imageOpacity;if(e._image&&0!==e._image.width&&0!==e._image.height){if(n&&(t.context.save(),t.context.globalAlpha*=e._imageOpacity),e._mipmap&&e.hasMipmaps()){var r=e.getMipmapLevel(i),s=e.getMipmapCanvas(r),a=Math.pow(2,r);t.context.drawImage(s,0,0,s.width*a,s.height*a)}else t.context.drawImage(e._image,0,0);n&&t.context.restore()}},markDirtyImage:function(){this.markPaintDirty()},markDirtyMipmap:function(){this.markPaintDirty()},markDirtyImageOpacity:function(){this.markPaintDirty()}}),s.Poolable.mixInto(e),e}),i("SCENERY/display/drawables/ImageStatefulDrawable",["require","PHET_CORE/inheritance","SCENERY/scenery","SCENERY/display/SelfDrawable"],function(t){"use strict";t("PHET_CORE/inheritance");var e=t("SCENERY/scenery"),i=(t("SCENERY/display/SelfDrawable"),{mixInto:function(t){var e=t.prototype;e.initializeState=function(t,e){return this.paintDirty=!0,this.dirtyImage=!0,this.dirtyImageOpacity=!0,this.dirtyMipmap=!0,this},e.disposeState=function(){},e.markPaintDirty=function(){this.paintDirty=!0,this.markDirty()},e.markDirtyImage=function(){this.dirtyImage=!0,this.markPaintDirty()},e.markDirtyImageOpacity=function(){this.dirtyImageOpacity=!0,this.markPaintDirty()},e.markDirtyMipmap=function(){this.dirtyMipmap=!0,this.markPaintDirty()},e.setToCleanState=function(){this.paintDirty=!1,this.dirtyImage=!1,this.dirtyImageOpacity=!1,this.dirtyMipmap=!1}}});return e.register("ImageStatefulDrawable",i),i}),i("SCENERY/display/drawables/ImageDOMDrawable",["require","SCENERY/display/DOMSelfDrawable","SCENERY/display/drawables/ImageStatefulDrawable","PHET_CORE/inherit","SCENERY/scenery","SCENERY/display/SelfDrawable","SCENERY/util/Util"],function(t){"use strict";function e(t,e){this.initialize(t,e)}var i=t("SCENERY/display/DOMSelfDrawable"),n=t("SCENERY/display/drawables/ImageStatefulDrawable"),r=t("PHET_CORE/inherit"),s=t("SCENERY/scenery"),a=t("SCENERY/display/SelfDrawable");t("SCENERY/util/Util");return s.register("ImageDOMDrawable",e),r(i,e,{initialize:function(t,e){return this.initializeDOMSelfDrawable(t,e),this.initializeState(t,e),this.domElement||(this.domElement=document.createElement("img"),this.domElement.style.display="block",this.domElement.style.position="absolute",this.domElement.style.pointerEvents="none",this.domElement.style.left="0",this.domElement.style.top="0"),this.hasOpacity=!1,s.Util.prepareForTransform(this.domElement,this.forceAcceleration),this},updateDOM:function(){var t=this.node,e=this.domElement;this.paintDirty&&this.dirtyImage&&(e.src=t._image?t._image.src:"//:0"),this.dirtyImageOpacity&&(1===t._imageOpacity?this.hasOpacity&&(this.hasOpacity=!1,e.style.opacity=""):(this.hasOpacity=!0,e.style.opacity=t._imageOpacity)),this.transformDirty&&s.Util.applyPreparedTransform(this.getTransformMatrix(),this.domElement,this.forceAcceleration),this.setToCleanState(),this.transformDirty=!1},dispose:function(){this.disposeState(),i.prototype.dispose.call(this)}}),n.mixInto(e),a.Poolable.mixInto(e),e}),i("SCENERY/display/drawables/ImageSVGDrawable",["require","SCENERY/display/drawables/ImageStatefulDrawable","PHET_CORE/inherit","PHET_CORE/platform","SCENERY/scenery","SCENERY/display/SelfDrawable","SCENERY/display/SVGSelfDrawable"],function(t){"use strict";function e(t,e){this.initialize(t,e)}var i=t("SCENERY/display/drawables/ImageStatefulDrawable"),n=t("PHET_CORE/inherit"),r=t("PHET_CORE/platform"),s=t("SCENERY/scenery"),a=t("SCENERY/display/SelfDrawable"),o=t("SCENERY/display/SVGSelfDrawable");return s.register("ImageSVGDrawable",e),n(o,e,{initialize:function(t,e){this.initializeSVGSelfDrawable(t,e,!1,!0);var i=this;return this.svgElement=this.svgElement||document.createElementNS(s.svgns,"image"),this.svgElement.setAttribute("x",0),this.svgElement.setAttribute("y",0),this.hasOpacity=!1,this._usingMipmap=!1,this._mipmapLevel=-1,this._mipmapTransformListener=this._mipmapTransformListener||function(){i.markDirtyMipmap()},this._mipmapListener=this._mipmapListener||function(){i.markDirtyMipmap(),i.updateMipmapStatus(i.node._mipmap)},this.node.onStatic("mipmap",this._mipmapListener),this.updateMipmapStatus(e.node._mipmap),this},updateSVGSelf:function(){var t=this.svgElement;this.dirtyImage?this.node._image?this.updateURL(t,!0):(t.setAttribute("width","0"),t.setAttribute("height","0"),t.setAttributeNS(s.xlinkns,"xlink:href","//:0")):this.dirtyMipmap&&this.node._image&&this.updateURL(t,!1),this.dirtyImageOpacity&&(1===this.node._imageOpacity?this.hasOpacity&&(this.hasOpacity=!1,t.removeAttribute("opacity")):(this.hasOpacity=!0,t.setAttribute("opacity",this.node._imageOpacity)))},updateURL:function(t,e){var i=-1;if(this.node._mipmap&&(i=this.node.getMipmapLevel(this.instance.relativeTransform.matrix)),e||i!==this._mipmapLevel)if(this._mipmapLevel>=0&&-1===i&&(r.ie9||r.ie10?t.setAttribute("transform",""):t.removeAttribute("transform")),this._mipmapLevel=i,this.node._mipmap&&this.node.hasMipmaps()){var n=this.node.getMipmapURL(i),a=this.node.getMipmapCanvas(i);t.setAttribute("width",a.width+"px"),t.setAttribute("height",a.height+"px"),t.setAttribute("transform","scale("+Math.pow(2,i).toFixed(20)+")"),t.setAttributeNS(s.xlinkns,"xlink:href",n)}else t.setAttribute("width",this.node.getImageWidth()+"px"),t.setAttribute("height",this.node.getImageHeight()+"px"),t.setAttributeNS(s.xlinkns,"xlink:href",this.node.getImageURL())},updateMipmapStatus:function(t){this._usingMipmap!==t&&(this._usingMipmap=t,t?(this.instance.relativeTransform.addListener(this._mipmapTransformListener),this.instance.relativeTransform.addPrecompute()):(this.instance.relativeTransform.removeListener(this._mipmapTransformListener),this.instance.relativeTransform.removePrecompute()),this.markDirtyMipmap())},dispose:function(){this.updateMipmapStatus(!1),this.node.offStatic("mipmap",this._mipmapListener),o.prototype.dispose.call(this)}}),i.mixInto(e),a.Poolable.mixInto(e),e}),i("SCENERY/display/drawables/ImageWebGLDrawable",["require","SCENERY/display/drawables/ImageStatefulDrawable","PHET_CORE/inherit","SCENERY/display/Renderer","SCENERY/scenery","SCENERY/display/SelfDrawable","DOT/Vector2","SCENERY/display/WebGLSelfDrawable"],function(t){"use strict";function e(t,e){this.initialize(t,e)}var i=t("SCENERY/display/drawables/ImageStatefulDrawable"),n=t("PHET_CORE/inherit"),r=t("SCENERY/display/Renderer"),s=t("SCENERY/scenery"),a=t("SCENERY/display/SelfDrawable"),o=t("DOT/Vector2"),h=t("SCENERY/display/WebGLSelfDrawable");return s.register("ImageWebGLDrawable",e),n(h,e,{webglRenderer:r.webglTexturedTriangles,initialize:function(t,e){return this.initializeWebGLSelfDrawable(t,e),this.vertexArray||(this.vertexArray=new Float32Array(30)),this.upperLeft=new o,this.lowerLeft=new o,this.upperRight=new o,this.lowerRight=new o,this.xyDirty=!0,this.uvDirty=!0,this.updatedOnce=!1,this.sprite=null,this},onAddToBlock:function(t){this.webglBlock=t,this.markDirty(),this.reserveSprite()},onRemoveFromBlock:function(t){this.unreserveSprite()},reserveSprite:function(){if(this.sprite){if(this.sprite.image===this.node._image)return;this.unreserveSprite()}var t=this.node.getImageWidth(),e=this.node.getImageHeight();this.sprite=t>0&&e>0?this.webglBlock.addSpriteSheetImage(this.node._image,t,e):null,this.xyDirty=!0,this.uvDirty=!0},unreserveSprite:function(){this.sprite&&this.webglBlock.removeSpriteSheetImage(this.sprite),this.sprite=null},markTransformDirty:function(){this.xyDirty=!0,h.prototype.markTransformDirty.call(this)},markPaintDirty:function(){this.xyDirty=!0,this.uvDirty=!0,this.markDirty()},update:function(){if(this.dirty){if(this.dirty=!1,this.reserveSprite(),!this.dirtyImageOpacity&&this.updatedOnce||(this.vertexArray[4]=this.node._imageOpacity,this.vertexArray[9]=this.node._imageOpacity,this.vertexArray[14]=this.node._imageOpacity,this.vertexArray[19]=this.node._imageOpacity,this.vertexArray[24]=this.node._imageOpacity,this.vertexArray[29]=this.node._imageOpacity),this.updatedOnce=!0,!this.sprite)return;if(this.uvDirty){this.uvDirty=!1;var t=this.sprite.uvBounds;this.vertexArray[2]=t.minX,this.vertexArray[3]=t.minY,this.vertexArray[7]=t.minX,this.vertexArray[8]=t.maxY,this.vertexArray[12]=t.maxX,this.vertexArray[13]=t.minY,this.vertexArray[17]=t.maxX,this.vertexArray[18]=t.minY,this.vertexArray[22]=t.minX,this.vertexArray[23]=t.maxY,this.vertexArray[27]=t.maxX,this.vertexArray[28]=t.maxY}if(this.xyDirty){this.xyDirty=!1;var e=this.node.getImageWidth(),i=this.node.getImageHeight(),n=this.instance.relativeTransform.matrix;n.multiplyVector2(this.upperLeft.setXY(0,0)),n.multiplyVector2(this.lowerLeft.setXY(0,i)),n.multiplyVector2(this.upperRight.setXY(e,0)),n.multiplyVector2(this.lowerRight.setXY(e,i)),this.vertexArray[0]=this.upperLeft.x,this.vertexArray[1]=this.upperLeft.y,this.vertexArray[5]=this.lowerLeft.x,this.vertexArray[6]=this.lowerLeft.y,this.vertexArray[10]=this.upperRight.x,this.vertexArray[11]=this.upperRight.y,this.vertexArray[15]=this.upperRight.x,this.vertexArray[16]=this.upperRight.y,this.vertexArray[20]=this.lowerLeft.x,this.vertexArray[21]=this.lowerLeft.y,this.vertexArray[25]=this.lowerRight.x,this.vertexArray[26]=this.lowerRight.y}}},dispose:function(){h.prototype.dispose.call(this)}}),i.mixInto(e),a.Poolable.mixInto(e),e}),i("SCENERY/nodes/Image",["require","DOT/Bounds2","PHET_CORE/cleanArray","PHET_CORE/extendDefined","SCENERY/display/drawables/ImageCanvasDrawable","SCENERY/display/drawables/ImageDOMDrawable","SCENERY/display/drawables/ImageSVGDrawable","SCENERY/display/drawables/ImageWebGLDrawable","PHET_CORE/inherit","SCENERY/nodes/Node","SCENERY/display/Renderer","SCENERY/scenery","SCENERY/util/SpriteSheet"],function(t){"use strict";function e(t,e){this._initialWidth=m.initialWidth,this._initialHeight=m.initialHeight,this._imageOpacity=m.imageOpacity,this._mipmap=m.mipmap,this._mipmapBias=m.mipmapBias,this._mipmapInitialLevel=m.mipmapInitialLevel,this._mipmapMaxLevel=m.mipmapMaxLevel,this._mipmapCanvases=[],this._mipmapURLs=[],this._mipmapData=null,this._imageLoadListener=this.onImageLoad.bind(this),this._imageLoadListenerAttached=!1,e=r({image:t},e),u.call(this,e),this.invalidateSupportedRenderers()}var i=t("DOT/Bounds2"),n=t("PHET_CORE/cleanArray"),r=t("PHET_CORE/extendDefined"),s=t("SCENERY/display/drawables/ImageCanvasDrawable"),a=t("SCENERY/display/drawables/ImageDOMDrawable"),o=t("SCENERY/display/drawables/ImageSVGDrawable"),h=t("SCENERY/display/drawables/ImageWebGLDrawable"),l=t("PHET_CORE/inherit"),u=t("SCENERY/nodes/Node"),c=t("SCENERY/display/Renderer"),d=t("SCENERY/scenery"),f=t("SCENERY/util/SpriteSheet"),p=Math.log2||function(t){return Math.log(t)/Math.LN2},m={imageOpacity:1,initialWidth:0,initialHeight:0,mipmap:!1,mipmapBias:0,mipmapInitialLevel:4,mipmapMaxLevel:5};return d.register("Image",e),l(u,e,{_mutatorKeys:["image","imageOpacity","initialWidth","initialHeight","mipmap","mipmapBias","mipmapInitialLevel","mipmapMaxLevel"].concat(u.prototype._mutatorKeys),drawableMarkFlags:u.prototype.drawableMarkFlags.concat(["image","imageOpacity","mipmap"]),setImage:function(t){var e=this._image!==t;if(e&&"string"==typeof t&&(this._image&&t===this._image.src&&(e=!1),t===this._mipmapData&&(e=!1)),e){if(this._initialWidth=0,this._initialHeight=0,this._image&&this._imageLoadListenerAttached&&this.detachImageLoadListener(),this._mipmapData=null,"string"==typeof t){var i=t;(t=document.createElement("img")).src=i}else t instanceof Array&&(this._mipmapData=t,t=t[0].img,this._mipmapInitialLevel=this._mipmapMaxLevel=this._mipmapData.length,this._mipmap=!0);this._image=t,!(this._image instanceof HTMLImageElement)||this._image.width&&this._image.height||this.attachImageLoadListener(),this.invalidateImage()}return this},set image(t){this.setImage(t)},getImage:function(){return this._image},get image(){return this.getImage()},invalidateImage:function(){this._image?this.invalidateSelf(new i(0,0,this.getImageWidth(),this.getImageHeight())):this.invalidateSelf(i.NOTHING);for(var t=this._drawables.length,e=0;e2){var i=document.createElement("canvas");if(i.width=Math.ceil(e.width/2),i.height=Math.ceil(e.height/2),i.width>0&&i.height>0){var n=i.getContext("2d");n.scale(.5,.5),n.drawImage(e,0,0),this._mipmapCanvases.push(i),this._mipmapURLs.push(i.toDataURL())}}},invalidateMipmaps:function(){if(n(this._mipmapCanvases),n(this._mipmapURLs),this._image&&this._mipmap)if(this._mipmapData)for(var t=0;t=1)return 0;var i=p(1/e);if((i=Math.round(i+this._mipmapBias-.7))<0&&(i=0),i>this._mipmapMaxLevel&&(i=this._mipmapMaxLevel),this.mipmap&&!this._mipmapCanvases[i]){for(var n=this._mipmapCanvases.length-1;++n<=i;)this.constructNextMipmap();return Math.min(i,this._mipmapCanvases.length-1)}return i},getMipmapCanvas:function(t){return this._mipmapData&&this._mipmapData[t]&&this._mipmapData[t].updateCanvas&&this._mipmapData[t].updateCanvas(),this._mipmapCanvases[t]},getMipmapURL:function(t){return this._mipmapURLs[t]},hasMipmaps:function(){return this._mipmapCanvases.length>0},getImageWidth:function(){var t=this._mipmapData?this._mipmapData[0].width:this._image.naturalWidth||this._image.width;return 0===t?this._initialWidth:t},get imageWidth(){return this.getImageWidth()},getImageHeight:function(){var t=this._mipmapData?this._mipmapData[0].height:this._image.naturalHeight||this._image.height;return 0===t?this._initialHeight:t},get imageHeight(){return this.getImageHeight()},getImageURL:function(){return this._image.src},isPainted:function(){return!0},canvasPaintSelf:function(t,e){s.prototype.paintCanvas(t,this,e)},createDOMDrawable:function(t,e){return a.createFromPool(t,e)},createSVGDrawable:function(t,e){return o.createFromPool(t,e)},createCanvasDrawable:function(t,e){return s.createFromPool(t,e)},createWebGLDrawable:function(t,e){return h.createFromPool(t,e)},attachImageLoadListener:function(){this._isDisposed||(this._image.addEventListener("load",this._imageLoadListener),this._imageLoadListenerAttached=!0)},detachImageLoadListener:function(){this._image.removeEventListener("load",this._imageLoadListener),this._imageLoadListenerAttached=!1},onImageLoad:function(){this.invalidateImage(),this.detachImageLoadListener()},dispose:function(){this._image&&this._imageLoadListenerAttached&&this.detachImageLoadListener(),u.prototype.dispose.call(this)}}),e.createSVGImage=function(t,e,i){var n=document.createElementNS(d.svgns,"image");return n.setAttribute("x",0),n.setAttribute("y",0),n.setAttribute("width",e+"px"),n.setAttribute("height",i+"px"),n.setAttributeNS(d.xlinkns,"xlink:href",t),n},e.createFastMipmapFromCanvas=function(t){var e=[],i=t.toDataURL(),n=new window.Image;n.src=i,e.push({img:n,url:i,width:t.width,height:t.height});for(var r=t;r.width>=2&&r.height>=2;){var s={},a=document.createElement("canvas");a.width=s.width=Math.ceil(r.width/2),a.height=s.height=Math.ceil(r.height/2);var o=a.getContext("2d");o.setTransform(.5,0,0,.5,0,0),o.drawImage(r,0,0),s.canvas=a,s.url=a.toDataURL(),s.img=new window.Image,s.img.src=s.url,r=a,e.push(s)}return e},e.DEFAULT_OPTIONS=_.extend({},u.DEFAULT_OPTIONS,m),e}),i("JOIST/HighlightNode",["require","SCENERY/util/Color","SCENERY/nodes/HBox","PHET_CORE/inherit","JOIST/joist","SCENERY/util/LinearGradient","SCENERY/nodes/Rectangle"],function(t){"use strict";function e(t,e,r){var s=(r=_.extend({fill:"white",highlightWidth:1,pickable:!1},r)).fill,h=i.toColor(s).withAlpha(0),l={fill:new a(0,0,0,e).addColorStop(0,h).addColorStop(.5,s).addColorStop(1,h)},u=new o(0,0,r.highlightWidth,e,l),c=new o(0,0,r.highlightWidth,e,l);r.children=[u,c],r.spacing=t,n.call(this,r)}var i=t("SCENERY/util/Color"),n=t("SCENERY/nodes/HBox"),r=t("PHET_CORE/inherit"),s=t("JOIST/joist"),a=t("SCENERY/util/LinearGradient"),o=t("SCENERY/nodes/Rectangle");return s.register("HighlightNode",e),r(n,e)}),i("JOIST/JoistButtonIO",["require","JOIST/joist","SCENERY/nodes/NodeIO","ifphetio!PHET_IO/assertInstanceOf","ifphetio!PHET_IO/types/ObjectIO","ifphetio!PHET_IO/phetioInherit"],function(t){"use strict";function e(t,e){n.call(this,t,e)}var i=t("JOIST/joist"),n=t("SCENERY/nodes/NodeIO"),r=(t("ifphetio!PHET_IO/assertInstanceOf"),t("ifphetio!PHET_IO/types/ObjectIO"));return t("ifphetio!PHET_IO/phetioInherit")(r,"JoistButtonIO",e,{},{events:["fired"],documentation:"A button in the joist framework"}),i.register("JoistButtonIO",e),e}),i("JOIST/JoistButton",["require","SUN/buttons/ButtonInteractionState","JOIST/HighlightNode","PHET_CORE/inherit","JOIST/joist","SCENERY/nodes/Node","SCENERY/listeners/PressListener","AXON/Property","SUN/buttons/PushButtonInteractionStateProperty","SUN/buttons/PushButtonModel","KITE/Shape","SCENERY/accessibility/FocusHighlightPath","JOIST/JoistButtonIO"],function(t){"use strict";function e(t,e,r,s){var p=this;(s=_.extend({cursor:"pointer",listener:null,highlightExtensionWidth:0,highlightExtensionHeight:0,highlightCenterOffsetX:0,highlightCenterOffsetY:0,phetioType:f,phetioState:!1,a11yEndListener:null},s)).tandem=r,this.buttonModel=new u(_.extend({phetioEventSource:this},s));var m=function(e){return new n(t.width+s.highlightExtensionWidth,t.height+s.highlightExtensionHeight,{centerX:t.centerX+s.highlightCenterOffsetX,centerY:t.centerY+s.highlightCenterOffsetY,fill:e,pickable:!1})},g=m("white"),E=m("black");a.call(this,_.extend({children:[t,g,E]}));var b=new l(this.buttonModel);this.interactionStateProperty=b,h.multilink([b,e],function(t,e){var n="black"!==e;g.visible=!n&&(t===i.OVER||t===i.PRESSED),E.visible=n&&(t===i.OVER||t===i.PRESSED)}),this.addInputListener(new o({tandem:r.createTandem("pressListener"),isPressedProperty:this.buttonModel.downProperty,isOverProperty:this.buttonModel.overProperty})),this.addAccessibleInputListener({click:function(){p.buttonModel.a11yClick(s.a11yEndListener)}}),this.mouseArea=this.touchArea=c.bounds(this.bounds),this.mutate(s);var y=d.getOuterLineWidthFromNode(this);this.focusHighlight=c.bounds(this.bounds.shiftedY(-y))}var i=t("SUN/buttons/ButtonInteractionState"),n=t("JOIST/HighlightNode"),r=t("PHET_CORE/inherit"),s=t("JOIST/joist"),a=t("SCENERY/nodes/Node"),o=t("SCENERY/listeners/PressListener"),h=t("AXON/Property"),l=t("SUN/buttons/PushButtonInteractionStateProperty"),u=t("SUN/buttons/PushButtonModel"),c=t("KITE/Shape"),d=t("SCENERY/accessibility/FocusHighlightPath"),f=t("JOIST/JoistButtonIO");return s.register("JoistButton",e),r(a,e)}),i("string!JOIST/credits.contributors",function(){return window.phet.chipper.strings.get("JOIST/credits.contributors")}),i("string!JOIST/credits.graphicArts",function(){return window.phet.chipper.strings.get("JOIST/credits.graphicArts")}),i("string!JOIST/credits.leadDesign",function(){return window.phet.chipper.strings.get("JOIST/credits.leadDesign")}),i("string!JOIST/credits.qualityAssurance",function(){return window.phet.chipper.strings.get("JOIST/credits.qualityAssurance")}),i("string!JOIST/credits.softwareDevelopment",function(){return 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window.phet.chipper.strings.get("JOIST/credits.translation")}),i("JOIST/CreditsNode",["require","PHET_CORE/inherit","JOIST/joist","SCENERY_PHET/PhetFont","SCENERY/nodes/RichText","PHETCOMMON/util/StringUtils","SCENERY/nodes/Text","SCENERY/nodes/VBox","SCENERY/nodes/VStrut","string!JOIST/credits.contributors","string!JOIST/credits.graphicArts","string!JOIST/credits.leadDesign","string!JOIST/credits.qualityAssurance","string!JOIST/credits.softwareDevelopment","string!JOIST/credits.team","string!JOIST/credits.thanks","string!JOIST/credits.title","string!JOIST/credits.translation"],function(t){"use strict";function e(t,e){e=_.extend({align:"left",spacing:1,maxWidth:550},e);var i=new r({size:14,weight:"bold"}),n={font:new r(12),align:"left",lineWrap:e.maxWidth,tagName:"p"},y=[];if(y.push(new o(E,{font:i,tagName:"h2",accessibleLabel:E})),t.leadDesign){var v=a.format(d,"‪"+t.leadDesign+"‬");y.push(new s(v,_.extend({accessibleLabel:v},n)))}if(t.softwareDevelopment){var S=a.format(p,"‪"+t.softwareDevelopment+"‬");y.push(new s(S,_.extend({accessibleLabel:S},n)))}if(t.team){var T=a.format(m,"‪"+t.team+"‬");y.push(new s(T,_.extend({accessibleLabel:T},n)))}if(t.contributors){var C=a.format(u,"‪"+t.contributors+"‬");y.push(new s(C,_.extend({accessibleLabel:C},n)))}if(t.qualityAssurance){var w=a.format(f,"‪"+t.qualityAssurance+"‬");y.push(new s(w,_.extend({accessibleLabel:w},n)))}if(t.graphicArts){var R=a.format(c,"‪"+t.graphicArts+"‬");y.push(new s(R,_.extend({accessibleLabel:R},n)))}if(t.translation&&(y.length>0&&y.push(new l(10)),y.push(new o(b,{font:i,tagName:"h2",accessibleLabel:b})),y.push(new s(t.translation,n))),t.thanks){y.length>0&&y.push(new l(10)),y.push(new o(g,{font:i,tagName:"h2",accessibleLabel:g}));var I=new s(t.thanks,n);I.accessibleLabel=t.thanks,y.push(I)}e.children=y,h.call(this,e),this.disposeCreditsNode=function(){y.forEach(function(t){t.dispose&&t.dispose()})}}var i=t("PHET_CORE/inherit"),n=t("JOIST/joist"),r=t("SCENERY_PHET/PhetFont"),s=t("SCENERY/nodes/RichText"),a=t("PHETCOMMON/util/StringUtils"),o=t("SCENERY/nodes/Text"),h=t("SCENERY/nodes/VBox"),l=t("SCENERY/nodes/VStrut"),u=t("string!JOIST/credits.contributors"),c=t("string!JOIST/credits.graphicArts"),d=t("string!JOIST/credits.leadDesign"),f=t("string!JOIST/credits.qualityAssurance"),p=t("string!JOIST/credits.softwareDevelopment"),m=t("string!JOIST/credits.team"),g=t("string!JOIST/credits.thanks"),E=t("string!JOIST/credits.title"),b=t("string!JOIST/credits.translation");return n.register("CreditsNode",e),i(h,e,{dispose:function(){this.disposeCreditsNode(),h.prototype.dispose.call(this)}})}),i("PHET_CORE/detectPrefixEvent",["require","PHET_CORE/phetCore"],function(t){"use strict";function e(t,e,i){return void 0!==t["on"+e]?e:void 0!==t["onmoz"+e]?"moz"+e:void 0!==t["onMoz"+e]?"Moz"+e:void 0!==t["onwebkit"+e]?"webkit"+e:void 0!==t["onms"+e]?"ms"+e:void 0!==t["ono"+e]?"o"+e:void 0}return t("PHET_CORE/phetCore").register("detectPrefixEvent",e),e}),i("JOIST/FullScreen",["require","PHET_CORE/detectPrefix","PHET_CORE/detectPrefixEvent","JOIST/joist","PHET_CORE/platform","AXON/Property"],function(t){"use strict";var e=t("PHET_CORE/detectPrefix"),i=t("PHET_CORE/detectPrefixEvent"),n=t("JOIST/joist"),r=t("PHET_CORE/platform"),s=t("AXON/Property"),a=e(document.body,"requestFullscreen")||e(document.body,"requestFullScreen"),o=e(document,"exitFullscreen")||e(document,"cancelFullScreen"),h=e(document,"fullscreenElement")||e(document,"fullScreenElement"),l=e(document,"fullscreenEnabled")||e(document,"fullScreenEnabled"),u=i(document,"fullscreenchange");"msfullscreenchange"===u&&(u="MSFullscreenChange");var c={isFullScreen:function(){return!!document[h]},isFullScreenEnabled:function(){return document[l]&&!r.safari7},enterFullScreen:function(t){if(r.ie9||r.ie10){if(void 0!==window.ActiveXObject){var e=new window.ActiveXObject("WScript.Shell");null!==e&&e.SendKeys("{F11}")}}else 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C=Math.max(S?S.width+2*l.xMargin:0,l.minWidth),w=Math.max(S?S.height+2*l.yMargin:0,l.minHeight),R=new c(e(C,w,l),{fill:l.baseColor,lineWidth:l.lineWidth});if(this.addChild(R),S){S&&(S.pickable=!1);var I=new n(S,{alignBounds:new r(l.xMargin,l.yMargin,R.width-l.xMargin,w-l.yMargin),xAlign:l.xAlign,yAlign:l.yAlign});this.addChild(I)}var N=new l.buttonAppearanceStrategy(R,h,this.baseColorProperty,l),P=new l.contentAppearanceStrategy(S,h,l),O=this;h.link(m),this.mouseArea=p.rectangle(0,0,C,w),this.touchArea=p.rectangle(-l.touchAreaXDilation,-l.touchAreaYDilation,C+2*l.touchAreaXDilation,w+2*l.touchAreaYDilation),this.mutate(l),this.disposeRectangularButtonView=function(){N.dispose(),P.dispose(),T.dispose(),h.unlink(m),S&&I.dispose()}}var n=t("SCENERY/nodes/AlignBox"),r=t("DOT/Bounds2"),s=t("SUN/buttons/ButtonInteractionState"),a=t("SCENERY/util/Color"),o=t("SUN/ColorConstants"),h=t("PHET_CORE/inherit"),l=t("SCENERY/util/LinearGradient"),u=t("SCENERY/nodes/Node"),c=t("SCENERY/nodes/Path"),d=t("SCENERY/listeners/PressListener"),f=t("AXON/Property"),p=t("KITE/Shape"),m=t("SUN/sun"),g=t("TANDEM/Tandem"),E=7,b=7,y=3,v=o.LIGHT_BLUE;return m.register("RectangularButtonView",i),i.ThreeDAppearanceStrategy=function(t,i,n,r){function o(e){switch(e){case s.IDLE:t.fill=C,T.stroke=x,T.fill=w;break;case s.OVER:t.fill=R,T.stroke=x,T.fill=I;break;case s.PRESSED:t.fill=N,T.stroke=x,T.fill=I;break;case s.DISABLED:t.fill=P,t.stroke=D,T.stroke=D,T.fill=O;break;case s.DISABLED_PRESSED:t.fill=A,t.stroke=D,T.stroke=D,T.fill=O;break;default:throw new Error("unsupported interactionState: "+e)}}function h(e){var n=new a(e.getRed(),e.getGreen(),e.getBlue(),0);C=new 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l(0,0,u,0).addColorStop(0,v.colorUtilsBrighter(.7)).addColorStop(m,S).addColorStop(g,S).addColorStop(1,v.colorUtilsDarker(.5)),A=new l(0,0,0,d).addColorStop(0,v.colorUtilsBrighter(.7)).addColorStop(.67*f,v.colorUtilsDarker(.3)).addColorStop(p,v.colorUtilsBrighter(.2)).addColorStop(1,v.colorUtilsDarker(.5)),null===r.stroke?(x=null,D=null):void 0===r.stroke?(x=e.colorUtilsDarker(.4),D=v.colorUtilsDarker(.4)):(x=a.toColor(r.stroke),D=v.colorUtilsDarker(.4)),t.cachedPaints=[C,R,N,P,A,D],T.cachedPaints=[w,I,O,x,D],o(i.value)}var u=t.width,d=t.height,f=Math.min(E/d,1),p=Math.max(1-y/d,0),m=Math.min(b/u,1),g=Math.max(1-y/u,0),v=a.toColor(r.disabledBaseColor),S=new a(v.getRed(),v.getGreen(),v.getBlue(),0),_=new a(256,256,256,.7),T=new c(e(u,d,r),{lineWidth:r.lineWidth,pickable:!1});t.addChild(T);var C,w,R,I,N,P,O,A,x,D;h(n.value),o(i.value),n.lazyLink(h),i.lazyLink(o),this.dispose=function(){n.unlink(h),i.unlink(o)}},i.FlatAppearanceStrategy=function(t,e,i,n){function r(e){switch(e){case s.IDLE:t.fill=h,t.stroke=f;break;case s.OVER:t.fill=l,t.stroke=f;break;case s.PRESSED:t.fill=u,t.stroke=f;break;case s.DISABLED:t.fill=c,t.stroke=p;break;case s.DISABLED_PRESSED:t.fill=d,t.stroke=p;break;default:throw new Error("unsupported interactionState: "+e)}}function o(i){h=i,l=i.colorUtilsBrighter(.4),u=i.colorUtilsDarker(.4),d=c=m,null===n.stroke?(f=null,p=null):void 0===n.stroke?(f=i.colorUtilsDarker(.4),p=m.colorUtilsDarker(.4)):(f=a.toColor(n.stroke),p=m.colorUtilsDarker(.4)),t.cachedPaints=[h,l,u,c,d,f,p],r(e.value)}var h,l,u,c,d,f,p,m=a.toColor(n.disabledBaseColor);i.link(o),e.lazyLink(r),this.dispose=function(){i.unlink(o),e.unlink(r)}},i.FadeContentWhenDisabled=function(t,e){function i(e){t&&(t.opacity=e===s.DISABLED||e===s.DISABLED_PRESSED?.3:1)}e.link(i),this.dispose=function(){e.unlink(i)}},h(u,i,{setEnabled:function(t){this.buttonModel.enabledProperty.set(t)},set enabled(t){this.setEnabled(t)},getEnabled:function(){return this.buttonModel.enabledProperty.get()},get 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n(this.buttonModel),t),this.clickListener=this.addAccessibleInputListener({click:function(){e.enabled&&e.buttonModel.a11yClick(t.accessibleFire)}}),this.disposeRectangularPushButton=function(){this.buttonModel.dispose(),this.removeAccessibleInputListener(this.clickListener)}}var i=t("PHET_CORE/inherit"),n=t("SUN/buttons/PushButtonInteractionStateProperty"),r=t("SUN/buttons/PushButtonIO"),s=t("SUN/buttons/PushButtonModel"),a=t("SUN/buttons/RectangularButtonView"),o=t("SUN/sun"),h=t("TANDEM/Tandem");return o.register("RectangularPushButton",e),i(a,e,{dispose:function(){this.disposeRectangularPushButton(),a.prototype.dispose.call(this)},addListener:function(t){this.buttonModel.addListener(t)},removeListener:function(t){this.buttonModel.removeListener(t)}})}),i("JOIST/DialogIO",["require","JOIST/joist","SCENERY/nodes/NodeIO","ifphetio!PHET_IO/assertInstanceOf","ifphetio!PHET_IO/phetioInherit"],function(t){"use strict";function e(t,e){n.call(this,t,e)}var i=t("JOIST/joist"),n=t("SCENERY/nodes/NodeIO");t("ifphetio!PHET_IO/assertInstanceOf");return t("ifphetio!PHET_IO/phetioInherit")(n,"DialogIO",e,{},{documentation:"A dialog panel"}),i.register("DialogIO",e),e}),i("JOIST/Dialog",["require","SCENERY/accessibility/AccessibilityUtil","SCENERY_PHET/accessibility/AriaHerald","SCENERY/display/Display","JOIST/FullScreen","PHET_CORE/inherit","JOIST/joist","JOIST/JoistA11yStrings","SCENERY/accessibility/KeyboardUtil","SCENERY/nodes/Node","SUN/Panel","SCENERY/nodes/Path","SUN/buttons/RectangularPushButton","KITE/Shape","TANDEM/Tandem","JOIST/DialogIO"],function(t){"use strict";function e(t,n){var a=this;n=_.extend({modal:!1,title:null,titleAlign:"center",titleSpacing:20,hasCloseButton:!0,layoutStrategy:e.DEFAULT_LAYOUT_STRATEGY,cornerRadius:10,resize:!0,fill:"white",stroke:"black",backgroundPickable:!0,xMargin:20,yMargin:20,closeButtonBaseColor:"#d00",closeButtonMargin:5,tandem:m.optional,phetioType:g,phetioReadOnly:!1,phetioState:!1,tagName:"div",ariaRole:"dialog",focusOnCloseNode:null},n),this.isModal=n.modal,this.isShowing=!1;var o=new u({children:[t]});if(n.title){var h=n.title;o.addChild(h);var b=function(){switch(n.titleAlign){case"center":h.centerX=t.centerX;break;case"left":h.left=t.left;break;case"right":h.right=t.right;break;default:throw new Error("unknown titleAlign for Dialog: "+n.titleAlign)}h.bottom=t.top-n.titleSpacing};n.resize&&(t.on("bounds",b),h.on("localBounds",b)),b()}if(c.call(this,o,n),n.hasCloseButton){var y=new d((new p).moveTo(0,0).lineTo(10,10).moveTo(0,10).lineTo(10,0),{stroke:"#fff",lineWidth:3}),v=new f({content:y,baseColor:n.closeButtonBaseColor,xMargin:5,yMargin:5,listener:function(){a.hide()},accessibleFire:function(){a.focusActiveElement()},tandem:n.tandem.createTandem("closeButton"),phetioReadOnly:n.phetioReadOnly,phetioState:n.phetioState,tagName:"button",accessibleLabel:E});this.addChild(v);var S=function(){v.right=o.right+n.xMargin-n.closeButtonMargin,v.top=o.top-n.yMargin+n.closeButtonMargin};n.resize&&(o.on("bounds",S),n.title&&n.title.on("bounds",S)),S()}var T=window.phet.joist.sim;this.updateLayout=function(){n.layoutStrategy(a,T.boundsProperty.value,T.screenBoundsProperty.value,T.scaleProperty.value)},this.updateLayout(),this.sim=T,this.accessibleOrder=[h,o],t.tagName&&this.setAriaDescribedByNode(t),n.title&&n.title.tagName&&this.setAriaLabelledByNode(n.title),this.sim.resizedEmitter.addListener(this.updateLayout),this.activeElement=n.focusOnCloseNode||null;var C=this.addAccessibleInputListener({keydown:function(t){if(t.keyCode===l.KEY_ESCAPE)t.preventDefault(),a.hide(),a.focusActiveElement();else if(t.keyCode===l.KEY_TAB&&s.isFullScreen()){var e=r.focus.trail.getUniqueId(),n=i.getNextFocusable().id===e,o=i.getPreviousFocusable().id===e;n&&o&&t.preventDefault()}}});this.disposeDialog=function(){a.sim.resizedEmitter.removeListener(a.updateLayout),a.removeAccessibleInputListener(C),n.hasCloseButton&&v.dispose(),n.resize&&(o.off("bounds",S),n.title&&(n.title.off("bounds",S),h.off("localBounds",b),t.off("bounds",b))),o.removeAllChildren(),o.detach()}}var i=t("SCENERY/accessibility/AccessibilityUtil"),n=t("SCENERY_PHET/accessibility/AriaHerald"),r=t("SCENERY/display/Display"),s=t("JOIST/FullScreen"),a=t("PHET_CORE/inherit"),o=t("JOIST/joist"),h=t("JOIST/JoistA11yStrings"),l=t("SCENERY/accessibility/KeyboardUtil"),u=t("SCENERY/nodes/Node"),c=t("SUN/Panel"),d=t("SCENERY/nodes/Path"),f=t("SUN/buttons/RectangularPushButton"),p=t("KITE/Shape"),m=t("TANDEM/Tandem"),g=t("JOIST/DialogIO"),E=h.closeString;return o.register("Dialog",e),e.DEFAULT_LAYOUT_STRATEGY=function(t,e,i,n){t.center=e.center.times(1/n)},a(c,e,{show:function(){this.isShowing||(window.phet.joist.sim.showPopup(this,this.isModal),this.isShowing=!0,this.activeElement=this.activeElement||r.focusedNode,this.setAccessibleViewsVisible(!1),this.updateLayout())},hide:function(){this.isShowing&&(window.phet.joist.sim.hidePopup(this,this.isModal),this.isShowing=!1,this.setAccessibleViewsVisible(!0))},dispose:function(){this.hide(),this.disposeDialog(),c.prototype.dispose.call(this)},setAccessibleViewsVisible:function(t){for(var e=0;et.major?1:this.minort.minor?1:this.maintenancet.maintenance?1:0},get isSimNotPublished(){return this.major<1||1===this.major&&0===this.minor&&0===this.maintenance&&this.suffix},toString:function(){return this.major+"."+this.minor+"."+this.maintenance+(this.suffix?"-"+this.suffix:"")}},{parse:function(t,i){var n=t.match(/(\d+)\.(\d+)\.(\d+)(-(.+))?/);if(!n)throw new Error("could not parse version: 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i=t("DOT/Bounds2"),n=t("PHET_CORE/inherit"),r=t("JOIST/joist"),s=t("SCENERY/util/LinearGradient"),a=t("SCENERY/nodes/Node"),o=t("SCENERY/nodes/Rectangle");return r.register("Frame",e),n(a,e,{setHighlighted:function(t){this.highlightRectangle.stroke=t?this.gradient:"transparent"}}),e}),i("JOIST/ScreenButtonIO",["require","JOIST/joist","SCENERY/nodes/NodeIO","ifphetio!PHET_IO/assertInstanceOf","ifphetio!PHET_IO/phetioInherit"],function(t){"use strict";function e(t,e){n.call(this,t,e)}var i=t("JOIST/joist"),n=t("SCENERY/nodes/NodeIO");t("ifphetio!PHET_IO/assertInstanceOf");return t("ifphetio!PHET_IO/phetioInherit")(n,"ScreenButtonIO",e,{},{documentation:"A pressable button in the simulation, in the home 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i=e===n;T.setHighlighted&&T.setHighlighted(i),S.opacity=t||i?1:.5,w.fill=t||i?"white":"gray"}),p.call(this,{children:[C,w]});var R=t?function(){e.showHomeScreenProperty.value=!1,r.value=-1}:function(){e.screenIndexProperty.value=n},I=this,N=function(t){I.startEvent("user","fired"),R(),I.endEvent()};this.addInputListener({down:N}),this.addAccessibleInputListener({click:function(){t&&N()}}),this.addAccessibleInputListener({focus:function(){!t&&N()}}),t||(this.highlightListener={over:function(t){r.value=n},out:function(t){r.value=-1}},this.addInputListener({over:function(t){t.pointer instanceof d&&(e.screenIndexProperty.value=n)}})),this.mouseArea=this.touchArea=u.bounds(this.bounds),this.disposeScreenButton=function(){r.unlink()},this.mutate(E)}var i=t("JOIST/Frame"),n=t("PHET_CORE/inherit"),r=t("JOIST/joist"),s=t("SCENERY/nodes/Node"),a=t("SCENERY_PHET/PhetColorScheme"),o=t("SCENERY_PHET/PhetFont"),h=t("SCENERY/nodes/Rectangle"),l=t("JOIST/ScreenButtonIO"),u=t("KITE/Shape"),c=t("SCENERY/nodes/Text"),d=t("SCENERY/input/Touch"),f=t("DOT/Util"),p=t("SCENERY/nodes/VBox"),m=140;return r.register("ScreenButton",e),n(p,e,{dispose:function(){this.disposeScreenButton(),p.prototype.dispose.call(this)}})}),i("JOIST/HomeScreenView",["require","DOT/Bounds2","SCENERY/nodes/HBox","PHET_CORE/inherit","JOIST/joist","JOIST/JoistA11yStrings","SCENERY/nodes/Node","JOIST/PhetButton","SCENERY_PHET/PhetFont","AXON/Property","JOIST/ScreenButton","JOIST/ScreenView","PHETCOMMON/util/StringUtils","SCENERY/nodes/Text"],function(t){"use strict";function e(t,e,i){var r=this;i=_.extend({showSmallHomeScreenIconFrame:!1,warningNode:null},i),d.call(this,{layoutBounds:y,tandem:e,accessibleLabel:b});var s=new p(t.name,{font:new 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i=t("DOT/Bounds2"),n=t("SCENERY/nodes/HBox"),r=t("PHET_CORE/inherit"),s=t("JOIST/joist"),a=t("JOIST/JoistA11yStrings"),o=t("SCENERY/nodes/Node"),h=t("JOIST/PhetButton"),l=t("SCENERY_PHET/PhetFont"),u=t("AXON/Property"),c=t("JOIST/ScreenButton"),d=t("JOIST/ScreenView"),f=t("PHETCOMMON/util/StringUtils"),p=t("SCENERY/nodes/Text"),m=a.simScreensString,g=a.simScreenString,E=a.homeScreenDescriptionPatternString,b=a.homeScreenString,y=new i(0,0,768,504),v="Century Gothic, Futura";return s.register("HomeScreenView",e),r(d,e,{},{TITLE_FONT_FAMILY:v,LAYOUT_BOUNDS:y})}),i("JOIST/HomeScreen",["require","JOIST/HomeScreenView","PHET_CORE/inherit","JOIST/joist","AXON/Property","JOIST/Screen"],function(t){"use strict";function e(t,e,n){(n=_.extend({backgroundColorProperty:new s("black")},n)).tandem=e,a.call(this,function(){return{}},function(){return new i(t,e.createTandem("view"),_.pick(n,["showSmallHomeScreenIconFrame","warningNode"]))},n)}var 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I=this.closeButtonPath.addAccessibleInputListener({click:function(){v.hide(),v.focusActiveElement()}});this.disposeKeyboardHelpDialog=function(){v.closeButtonPath.removeInputListener(S),v.closeButtonPath.removeAccessibleInputListener(I)}}var i=t("SCENERY/input/ButtonListener"),n=t("JOIST/Dialog"),r=t("SCENERY/accessibility/FocusHighlightPath"),s=t("PHET_CORE/inherit"),a=t("JOIST/joist"),o=t("JOIST/JoistA11yStrings"),h=t("SCENERY/nodes/Path"),l=t("SCENERY_PHET/PhetFont"),u=t("KITE/Shape"),c=t("TANDEM/Tandem"),d=t("SCENERY/nodes/Text"),f=7,p=10,m=15,g=500,E=t("string!JOIST/keyboardShortcuts.title");return a.register("KeyboardHelpDialog",e),s(n,e,{dispose:function(){this.disposeKeyboardHelpDialog(),n.prototype.dispose.call(this)}})}),i("mipmap!JOIST/keyboard-icon.png",function(){var t=window.phet.chipper.mipmaps["JOIST/keyboard-icon.png"];return window.phetImages=window.phetImages||[],t.forEach(function(t){t.img=new 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i=t("SCENERY/nodes/Image"),n=t("PHET_CORE/inherit"),r=t("JOIST/joist"),s=t("JOIST/JoistA11yStrings"),a=t("JOIST/JoistButton"),o=t("JOIST/KeyboardHelpDialog"),h=t("AXON/Property"),l=t("mipmap!JOIST/keyboard-icon.png"),u=t("mipmap!JOIST/keyboard-icon-on-white.png"),c=.32/l[0].height*67;return r.register("KeyboardHelpButton",e),n(a,e,{dispose:function(){this.removeAccessibleInputListener(this.clickListener),a.prototype.dispose&&a.prototype.dispose.call(this)}})}),i("JOIST/NavigationBarScreenButtonIO",["require","JOIST/joist","SCENERY/nodes/NodeIO","ifphetio!PHET_IO/assertInstanceOf","ifphetio!PHET_IO/phetioInherit"],function(t){"use strict";function e(t,e){n.call(this,t,e)}var i=t("JOIST/joist"),n=t("SCENERY/nodes/NodeIO");t("ifphetio!PHET_IO/assertInstanceOf");return t("ifphetio!PHET_IO/phetioInherit")(n,"NavigationBarScreenButtonIO",e,{},{documentation:"A pressable button in the simulation, in the home 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r="black"!==n,s=r?"black":l.BUTTON_YELLOW,a=r?"gray":"white";O.fill=t?s:a,A.opacity=t?1:e?.65:.5,k.visible=!r&&(i||e),L.visible=r&&(i||e)}),w.maxButtonWidth&&this.width>w.maxButtonWidth?(O.maxWidth=N.maxWidth=w.maxButtonWidth-(this.width-A.width),x.setRect(0,0,A.width,x.height),x.center=A.center,k.spacing=L.spacing=x.width+2*S,k.center=L.center=A.center):O.maxWidth=this.width,this.setAccessibleAttribute("aria-roledescription",T);var Y=n.getOuterLineWidthFromNode(this);this.focusHighlight=m.bounds(this.bounds.setMinY(this.bounds.minY-Y/2)),this.mutate(w)}var i=t("AXON/DerivedProperty"),n=t("SCENERY/accessibility/FocusHighlightPath"),r=t("JOIST/HighlightNode"),s=t("PHET_CORE/inherit"),a=t("JOIST/joist"),o=t("JOIST/JoistA11yStrings"),h=t("SCENERY/nodes/Node"),l=t("SCENERY_PHET/PhetColorScheme"),u=t("SCENERY_PHET/PhetFont"),c=t("SCENERY/listeners/PressListener"),d=t("AXON/Property"),f=t("SUN/buttons/PushButtonModel"),p=t("SCENERY/nodes/Rectangle"),m=t("KITE/Shape"),g=t("PHETCOMMON/util/StringUtils"),E=t("TANDEM/Tandem"),b=t("JOIST/NavigationBarScreenButtonIO"),y=t("SCENERY/nodes/Text"),v=(t("DOT/Util"),t("SCENERY/nodes/VBox")),S=4,T=o.simScreenString,C=o.screenNumberPatternString;return a.register("NavigationBarScreenButton",e),s(h,e)}),i("string!JOIST/simTitleWithScreenNamePattern",function(){return window.phet.chipper.strings.get("JOIST/simTitleWithScreenNamePattern")}),i("JOIST/NavigationBar",["require","SCENERY/accessibility/AccessiblePeer","DOT/Dimension2","JOIST/HomeButton","JOIST/HomeScreenView","PHET_CORE/inherit","JOIST/joist","JOIST/JoistA11yStrings","JOIST/KeyboardHelpButton","JOIST/NavigationBarScreenButton","SCENERY/nodes/Node","JOIST/PhetButton","SCENERY_PHET/PhetFont","PHET_CORE/platform","SCENERY/nodes/Rectangle","PHETCOMMON/util/StringUtils","SCENERY/nodes/Text","string!JOIST/simTitleWithScreenNamePattern"],function(t){"use strict";function e(t,e,n){this.screens=e,c.call(this,{tagName:"div",ariaRole:"region",labelTagName:"h2",accessibleLabel:1===e.length?v:y,prependLabels:!0}),this.background=new m(0,0,T.width,T.height,{pickable:!0}),t.lookAndFeel.navigationBarFillProperty.linkAttribute(this.background,"fill"),this.addChild(this.background),this.barContents=new c,this.addChild(this.barContents);var a=t.name;phet.chipper.queryParameters.screens&&1===phet.chipper.queryParameters.screens.length&&e[0].name&&(a=g.fillIn(b,{simName:t.name,screenName:e[0].name})),this.titleTextNode=new E(a,{font:new f(16),tandem:n.createTandem("titleTextNode"),phetioInstanceDocumentation:"Displays the title of the simulation in the navigation bar (bottom left)"}),t.lookAndFeel.navigationBarTextFillProperty.linkAttribute(this.titleTextNode,"fill"),this.barContents.addChild(this.titleTextNode),this.phetButton=new d(t,t.lookAndFeel.navigationBarFillProperty,t.lookAndFeel.navigationBarTextFillProperty,n.createTandem("phetButton")),this.barContents.addChild(this.phetButton);var o=0;if(phet.chipper.a11yEnabled&&t.keyboardHelpNode&&!p.mobileSafari&&(this.keyboardHelpButton=new l(t,t.lookAndFeel.navigationBarFillProperty,n.createTandem("keyboardHelpButton")),this.barContents.addChild(this.keyboardHelpButton),o=this.keyboardHelpButton.width+N),this.ariaLabelledByNode=this,this.ariaLabelContent=i.LABEL,1===e.length)this.titleTextNode.maxWidth=s.LAYOUT_BOUNDS.width-C-w-this.phetButton.width-R-o;else{var h=Math.min(this.titleTextNode.width,.2*s.LAYOUT_BOUNDS.width),D=new c({tagName:"nav",useAriaLabel:!0,accessibleLabel:S}),k=new c({tagName:"ol"});D.addChild(k),this.barContents.addChild(D),this.homeButton=new r(T.height,t.lookAndFeel.navigationBarFillProperty,n.createTandem("homeButton"),{listener:function(){t.showHomeScreenProperty.value=!0},a11yEndListener:function(){t.homeScreen.view.highlightedScreenButton.focus()}}),phet.chipper.queryParameters.homeScreen&&k.addChild(this.homeButton);for(var L=s.LAYOUT_BOUNDS.width/2-C-h-w-this.homeButton.width-O,Y=s.LAYOUT_BOUNDS.width/2-this.phetButton.width-R-o,H=2*Math.min(L,Y),M=(H-(e.length-1)*A)/e.length,B=_.map(e,function(e){return new u(t.lookAndFeel.navigationBarFillProperty,t.screenIndexProperty,t.screens,e,T.height,{maxButtonWidth:M,tandem:n.createTandem(e.screenTandem.tail+"Button")})}),F=Math.max(x,_.maxBy(B,function(t){return t.width}).width)+A,z=0;z')}var i=t("PHET_CORE/inherit"),n=30;return t("JOIST/joist").register("Profiler",e),i(Object,e,{frameStarted:function(){this.frameStartTime=Date.now()},frameEnded:function(){if(this.allTimes.length>0&&this.allTimes.length%60==0){for(var t=0,e=0;e0&&(this.longTimes.sort(function(t,e){return e-t}),i=i+" — "+this.longTimes),$("#phetProfiler").html(i),e=0;ee.length-1)throw new Error("invalid screen index: "+t);l.push(e[i])}),0!==a){var f=_.indexOf(l,e[a-1]);a=f+1}e=l}n=_.extend({showHomeScreen:e.length>1&&o&&0===a,screenIndex:0===a?0:a-1,credits:{},optionsNode:null,homeScreenWarningNode:null,recordInputEventLog:!1,inputEventLogName:void 0,showSaveAndLoad:!1,showSmallHomeScreenIconFrame:!1,accessibility:!1,keyboardHelpNode:null,rootRenderer:R.edge?"canvas":"svg"},n),this.options=n,n.rootRenderer=phet.chipper.queryParameters.rootRenderer||n.rootRenderer,this.showHomeScreenProperty=new r(n.showHomeScreen,e.length>1?{tandem:M.createTandem("showHomeScreenProperty")}:{}),this.screenIndexProperty=new v(n.screenIndex,{tandem:M.createTandem("screenIndexProperty"),phetioInstanceDocumentation:"Indicates which screen is selected (0-indexed)",validValues:_.range(0,e.length),numberType:"Integer"}),this.activeProperty=new r(!phet.joist.playbackModeEnabledProperty.value,{tandem:M.createTandem("activeProperty"),phetioInstanceDocumentation:"Indicates whether the entire simulation is running and processing user input",phetioType:P(H)}),this.browserTabVisibleProperty=new r(!0,{tandem:M.createTandem("browserTabVisibleProperty"),phetioInstanceDocumentation:"Indicates whether the browser tab containing the simulation is currently visible",phetioReadOnly:!0}),document.addEventListener("visibilitychange",function(){s.browserTabVisibleProperty.set("visible"===document.visibilityState)},!1),this.scaleProperty=new N(1),this.boundsProperty=new N(null),this.screenBoundsProperty=new N(null),this.currentScreenProperty=new N(null),this.phetButtonPickableProperty=new r(!0,{tandem:M.createTandem("phetButtonPickableProperty"),phetioInstanceDocumentation:"Determines whether the PhET Button in the bottom right of the screen can be pressed, and applies to the PhET Button on the home screen (if any) and navigation bar."}),this.lookAndFeel=new E,this.destroyed=!1,phet.chipper.a11yEnabled=phet.chipper.a11yEnabled||n.accessibility,phet.chipper.a11yEnabled&&(i.initialize(),Y.initialize()),this.keyboardHelpNode=n.keyboardHelpNode,window.phet.joist.sim=s,window.phet.joist.ScreenshotGenerator=O,this.name=t,this.version=T.version,this.credits=n.credits,this.frameCounter=0,this.resizePending=!0,this.locale=phet.chipper.locale||"en",QueryStringMachine.containsKey("locale")&&$("title").html(t),phet.chipper.queryParameters.recordInputEventLog&&(n.recordInputEventLog=!0,n.inputEventLogName=phet.chipper.queryParameters.recordInputEventLog),phet.chipper.queryParameters.playbackInputEventLog&&(n.playbackInputEventLog=!0,n.inputEventLogName=phet.chipper.queryParameters.playbackInputEventLog),phet.chipper.queryParameters.fuzzMouse&&(window.open=function(){return{focus:function(){},blur:function(){}}}),this.phetioSimStartedEventId=this.startEvent("model","simStarted",{repoName:T.name,simName:this.name,simVersion:this.version,url:window.location.href,randomSeed:window.phet.chipper.randomSeed,userAgent:window.navigator.userAgent});$("body").css("padding","0").css("margin","0").css("overflow","hidden"),document.getElementById("sim")&&document.getElementById("sim").parentNode===document.body&&document.body.removeChild(document.getElementById("sim")),document.onselectstart=function(){return!1},this.rootNode=new y({renderer:n.rootRenderer}),this.display=new h(s.rootNode,{allowSceneOverflow:!1,allowWebGL:phet.chipper.queryParameters.webgl,accessibility:phet.chipper.a11yEnabled,isApplication:!1,assumeFullWindow:!0}),this.activeProperty.link(function(t){s.display.interactive=t}),s.display.domElement.id="sim",document.body.appendChild(s.display.domElement),c.start(this),phet.chipper.queryParameters.sceneryLog&&this.display.scenery.enableLogging(phet.chipper.queryParameters.sceneryLog),phet.chipper.queryParameters.sceneryStringLog&&this.display.scenery.switchLogToString(),this.display.initializeEvents(),window.phet.joist.rootNode=this.rootNode,window.phet.joist.display=this.display,s.display.setPointerDisplayVisible(phet.chipper.queryParameters.showPointers),s.display.setPointerAreaDisplayVisible(phet.chipper.queryParameters.showPointerAreas),s.display.setCanvasNodeBoundsVisible(phet.chipper.queryParameters.showCanvasNodeBounds),s.display.setFittedBlockBoundsVisible(phet.chipper.queryParameters.showFittedBlockBounds),this.screens=e,e.length>1?(this.homeScreen=new d(this,M.createTandem("homeScreen"),{warningNode:n.homeScreenWarningNode,showSmallHomeScreenIconFrame:n.showSmallHomeScreenIconFrame}),this.homeScreen.initializeModelAndView()):this.homeScreen=null,this.navigationBar=new b(this,e,M.createTandem("navigationBar")),this.updateBackground=function(){s.lookAndFeel.backgroundColorProperty.value=s.currentScreenProperty.value?s.currentScreenProperty.value.backgroundColorProperty.value:s.homeScreen.backgroundColorProperty.value},this.lookAndFeel.backgroundColorProperty.link(function(t){s.display.backgroundColor=t}),N.multilink([this.showHomeScreenProperty,this.screenIndexProperty],function(t,i){s.currentScreenProperty.value=t&&s.homeScreen?null:e[i],s.updateBackground()}),this.currentScreenProperty.lazyLink(function(t,e){null===e?s.homeScreen.view.interruptSubtreeInput():e.view.interruptSubtreeInput()}),window.addEventListener("pageshow",function(t){t.persisted&&window.location.reload()}),phet.chipper.queryParameters.legendsOfLearning&&new g(this).start()}var i=t("SCENERY_PHET/accessibility/AriaHerald"),n=t("SCENERY_PHET/BarrierRectangle"),r=t("AXON/BooleanProperty"),s=t("DOT/Bounds2"),a=t("BRAND/Brand"),o=t("DOT/Dimension2"),h=t("SCENERY/display/Display"),l=t("DOT/Util"),u=t("AXON/Emitter"),c=t("JOIST/Heartbeat"),d=t("JOIST/HomeScreen"),f=t("JOIST/HomeScreenView"),p=t("PHET_CORE/inherit"),m=t("JOIST/joist"),g=t("JOIST/thirdPartySupport/LegendsOfLearningSupport"),E=t("JOIST/LookAndFeel"),b=t("JOIST/NavigationBar"),y=t("SCENERY/nodes/Node"),v=t("AXON/NumberProperty"),S=t("AXON/ObservableArray"),T=t("JOIST/packageJSON"),C=t("JOIST/PhetButton"),w=t("TANDEM/PhetioObject"),R=t("PHET_CORE/platform"),I=t("JOIST/Profiler"),N=t("AXON/Property"),P=t("AXON/PropertyIO"),O=t("JOIST/ScreenshotGenerator"),A=t("JOIST/SimIO"),x=t("TANDEM/Tandem"),D=t("PHET_CORE/Timer"),k=t("JOIST/UpdateCheck"),L=t("SCENERY/util/Util"),Y=t("SCENERY_PHET/accessibility/utteranceQueue"),H=t("ifphetio!PHET_IO/types/BooleanIO"),M=x.rootTandem;return phet.joist.elapsedTime=0,phet.joist.playbackModeEnabledProperty=new r(phet.chipper.queryParameters.playbackMode),m.register("Sim",e),p(w,e,{finishInit:function(t){var e=this;this.homeScreen&&this.rootNode.addChild(this.homeScreen.view),_.each(t,function(t){t.view.layerSplit=!0,e.rootNode.addChild(t.view)}),this.rootNode.addChild(this.navigationBar),this.homeScreen&&C.linkPhetButtonTransform(this.homeScreen,this.navigationBar,this.rootNode),N.multilink([this.showHomeScreenProperty,this.screenIndexProperty],function(i,n){e.homeScreen&&(i?(e.homeScreen.activeProperty.set(!0),e.homeScreen.view.setVisible(!0)):(e.homeScreen.view.setVisible(!1),e.homeScreen.activeProperty.set(!1)));for(var r=0;r=0&&this.stepSimulation(i)},getSelectedScreen:function(){return this.showHomeScreenProperty.value?null:this.screens[this.screenIndexProperty.value]},stepSimulation:function(t){this.frameStartedEmitter.emit(),this.frameCounter++,this.resizePending&&this.resizeToWindow(),phet.chipper.queryParameters.fuzzMouse&&this.display.fuzzMouseEvents(phet.chipper.queryParameters.fuzzRate),phet.chipper.queryParameters.fuzzBoard&&this.display.fuzzBoardEvents();var e=this.getSelectedScreen();e&&e.maxDT&&(t=Math.min(t,e.maxDT)),phet.joist.elapsedTime=phet.joist.elapsedTime+1e3*t,D.step(t),e&&e.model.step&&t&&e.model.step(t),window.TWEEN&&window.TWEEN.update(phet.joist.elapsedTime),e&&e.view.step&&e.view.step(t),this.display.updateDisplay(),this.frameEndedEmitter.emit1(t)}})}),i("JOIST/checkNamespaces",["require","JOIST/joist"],function(t){"use strict";var e=function(){var t=window.requirejs&&window.requirejs._defined||window.require&&window.require.s.contexts._.defined,e=function(e){for(var i in t)if(!(i.indexOf("!")>=0||i.indexOf("/")<0||i.indexOf("..")>=0)){var n=i.slice(0,i.indexOf("/")),r=i.slice(i.lastIndexOf("/")+1),s=n.toLowerCase().split("_"),a=[s[0]].concat(s.slice(1).map(function(t){return t.charAt(0).toUpperCase()+t.slice(1)})).join("");if(r!==a&&r!==a+"Namespace"){var o=phet[a]&&phet[a][r];o||e("not namespaced: "+a+"."+r),o&&o!==t[i]&&e(a+"."+r+" is different than the expected namespaced object")}}};e(function(t){console.log(t)}),e(function(t){})};return t("JOIST/joist").register("checkNamespaces",e),e}),i("JOIST/SimLauncher",["require","JOIST/checkNamespaces","JOIST/joist","DOT/Random","ifphetio!PHET_IO/phetioCommandProcessor"],function(t){"use strict";t("JOIST/checkNamespaces");var e=t("JOIST/joist"),i=t("DOT/Random"),n=t("ifphetio!PHET_IO/phetioCommandProcessor"),r={launch:function(t){function e(){window.phetLaunchSimulation=function(){phet.joist.random=new i({staticSeed:!0}),t()},phet.phetio&&n.initialize(),phet.chipper.queryParameters.postMessageOnReady&&window.parent&&window.parent.postMessage(JSON.stringify({type:"ready",url:window.location.href}),"*"),phet.phetio&&!phet.phetio.queryParameters.phetioStandalone||phet.chipper.queryParameters.playbackMode||window.phetLaunchSimulation()}function r(t){return!!t.complete&&(void 0===t.naturalWidth||0!==t.naturalWidth)}window.phet.joist.launchCalled=!0;var s=[],a=0;if(window.phetImages)for(var o=0;o