penracourses/static/js/cornerstone.min.js

/*! cornerstone-core - 2.3.0 - 2019-07-03 | (c) 2016 Chris Hafey | https://github.com/cornerstonejs/cornerstone */
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a={element:e};D(e,C.ELEMENT_DISABLED,a),D(o,C.ELEMENT_DISABLED,a),t[r].element.removeChild(t[r].canvas),t[r].canvas=void 0,t.splice(r,1);break}},he=function(){return window.performance?performance.now():Date.now()},pe=function(e,t,r){if(void 0===e)throw new Error("displayImage: parameter element must not be undefined");if(void 0===t)throw new Error("displayImage: parameter image must not be undefined");var a,n=T(e),i=n.image;if(n.image=t,n.layers&&n.layers.length&&P(e,t),void 0===n.viewport&&(n.viewport=g(n.canvas,t)),r)for(var o in r)null!==r[o]&&(n.viewport[o]=r[o]);void 0!==n.lastImageTimeStamp&&(a=(1e3/(he()-n.lastImageTimeStamp)).toFixed());n.lastImageTimeStamp=he();var l={viewport:n.viewport,element:n.element,image:n.image,oldImage:i,enabledElement:n,frameRate:a};D(n.element,C.NEW_IMAGE,l),A(e)},we=function(e){var t=T(e);if(void 0===t.image)throw new Error("draw: image has not been loaded yet");f(t)},be=function(){for(var e=s(),t=0;t<e.length;t++){var r=e[t];!0===r.invalid&&f(r,!0)}},ye=function(e){var t=T(e),r=t.image;t.viewport.scale=v(t.canvas,r,t.viewport.rotation).scaleFactor,t.viewport.translation.x=0,t.viewport.translation.y=0,A(e)};var xe=function(e,t){var r,a,n=T(e),i=n.canvas.width,o=n.canvas.height;r=e,(a=n.canvas).width!==r.clientWidth&&(a.width=r.clientWidth,a.style.width="".concat(r.clientWidth,"px")),a.height!==r.clientHeight&&(a.height=r.clientHeight,a.style.height="".concat(r.clientHeight,"px"));var l,s,d,u,m,c,v,g,f,h,p,w,b,y,x,E,I={element:e};(D(e,C.ELEMENT_RESIZED,I),void 0!==n.image)&&(t||(f=i,h=o,p=(g=n).viewport.scale,w=L(g.image,g.viewport.rotation),b=Math.round(w.width*p),y=Math.round(w.height*p),x=g.viewport.translation.x,E=g.viewport.translation.y,b===f&&y<=h||b<=f&&y===h&&0===x&&0===E)?ye(e):(s=i,d=o,u=(l=n).viewport.scale,m=l.canvas.width/s,c=l.canvas.height/d,v=Math.sqrt(m*c),l.viewport.scale=v*u,A(e)))},Ee=function(e,t,r){var a=he(),n=e.getPixelData();e.stats.lastGetPixelDataTime=he()-a;var i=n.length,o=e.minPixelValue,l=3,s=0;if(a=he(),n instanceof Int16Array)if(o<0)for(;s<i;)r[l]=t[n[s++]+-o],l+=4;else for(;s<i;)r[l]=t[n[s++]],l+=4;else if(n instanceof Uint16Array)for(;s<i;)r[l]=t[n[s++]],l+=4;else if(o<0)for(;s<i;)r[l]=t[n[s++]+-o],l+=4;else for(;s<i;)r[l]=t[n[s++]],l+=4;e.stats.lastStoredPixelDataToCanvasImageDataTime=he()-a},Ie=function(e,t,r){var a=he(),n=e.getPixelData();e.stats.lastGetPixelDataTime=he()-a;var i,o=n.length,l=e.minPixelValue,s=0,d=0;if(a=he(),n instanceof Int16Array)if(l<0)for(;d<o;)i=t[n[d++]+-l],r[s++]=i,r[s++]=i,r[s++]=i,r[s++]=255;else for(;d<o;)i=t[n[d++]],r[s++]=i,r[s++]=i,r[s++]=i,r[s++]=255;else if(n instanceof Uint16Array)for(;d<o;)i=t[n[d++]],r[s++]=i,r[s++]=i,r[s++]=i,r[s++]=255;else if(l<0)for(;d<o;)i=t[n[d++]+-l],r[s++]=i,r[s++]=i,r[s++]=i,r[s++]=255;else for(;d<o;)i=t[n[d++]],r[s++]=i,r[s++]=i,r[s++]=i,r[s++]=255;e.stats.lastStoredPixelDataToCanvasImageDataTime=he()-a},Ce=function(e,t,r){if(void 0===e)throw new Error("setToPixelCoordinateSystem: parameter enabledElement must not be undefined");if(void 0===t)throw new Error("setToPixelCoordinateSystem: parameter context must not be undefined");var a=ce(e,r);t.setTransform(a.m[0],a.m[1],a.m[2],a.m[3],a.m[4],a.m[5])},Te={};var Le={storedPixelDataToImageData:function(e){for(var t=e.getPixelData(),r=new Uint8Array(e.width*e.height*3),a=0,n=0;n<t.length;n++){var i=Math.abs(t[n]);r[a++]=255&i,r[a++]=i>>8,r[a++]=t[n]<0?0:1}return r}};Te.frag="precision mediump float;uniform sampler2D u_image;uniform float ww;uniform float wc;uniform float slope;uniform float intercept;uniform int invert;varying vec2 v_texCoord;void main() {vec4 color = texture2D(u_image, v_texCoord);float intensity = color.r*256.0 + color.g*65536.0;if (color.b == 0.0)intensity = -intensity;intensity = intensity * slope + intercept;float center0 = wc - 0.5;float width0 = max(ww, 1.0);intensity = (intensity - center0) / width0 + 0.5;intensity = clamp(intensity, 0.0, 1.0);gl_FragColor = vec4(intensity, intensity, intensity, 1.0);if (invert == 1)gl_FragColor.rgb = 1.0 - gl_FragColor.rgb;}";var Ae={};var De={storedPixelDataToImageData:function(e){for(var t=e.getPixelData(),r=new Uint8Array(e.width*e.height*2),a=0,n=0;n<t.length;n++)r[a++]=t[n],r[a++]=t[n]<0?0:1;return r}};Ae.frag="precision mediump float;uniform sampler2D u_image;uniform float ww;uniform float wc;uniform float slope;uniform float intercept;uniform int invert;varying vec2 v_texCoord;void main() {vec4 color = texture2D(u_image, v_texCoord);float intensity = color.r*256.;if (color.a == 0.0)intensity = -intensity;intensity = intensity * slope + intercept;float center0 = wc - 0.5;float width0 = max(ww, 1.0);intensity = (intensity - center0) / width0 + 0.5;intensity = clamp(intensity, 0.0, 1.0);gl_FragColor = vec4(intensity, intensity, intensity, 1.0);if (invert == 1)gl_FragColor.rgb = 1.0 - gl_FragColor.rgb;}";var Pe={};var Se={storedPixelDataToImageData:function(e){var t=e.minPixelValue,r=0,a=0,n=e.width*e.height*4,i=e.width*e.height*3,o=e.getPixelData(),l=new Uint8Array(i);if(t<0)for(;a<n;)l[r++]=o[a++]+-t,l[r++]=o[a++]+-t,l[r++]=o[a++]+-t,a+=1;else for(;a<n;)l[r++]=o[a++],l[r++]=o[a++],l[r++]=o[a++],a+=1;return l}};Pe.frag="precision mediump float;uniform sampler2D u_image;uniform float ww;uniform float wc;uniform float slope;uniform float intercept;uniform float minPixelValue;uniform int invert;varying vec2 v_texCoord;void main() {vec3 color = texture2D(u_image, v_texCoord).xyz;color = color * 256.0 * slope + intercept;float center0 = wc - 0.5 - minPixelValue;float width0 = max(ww, 1.0);color = (color - center0) / width0 + 0.5;gl_FragColor = vec4(color, 1);if (invert == 1)gl_FragColor.rgb = 1. - gl_FragColor.rgb;}";var Re={};var _e={storedPixelDataToImageData:function(e){for(var t=e.getPixelData(),r=new Uint8Array(e.width*e.height*2),a=0,n=0;n<t.length;n++){var i=t[n];r[a++]=255&i,r[a++]=i>>8}return r}};Re.frag="precision mediump float;uniform sampler2D u_image;uniform float ww;uniform float wc;uniform float slope;uniform float intercept;uniform int invert;varying vec2 v_texCoord;void main() {vec4 color = texture2D(u_image, v_texCoord);float intensity = color.r*256.0 + color.a*65536.0;intensity = intensity * slope + intercept;float center0 = wc - 0.5;float width0 = max(ww, 1.0);intensity = (intensity - center0) / width0 + 0.5;intensity = clamp(intensity, 0.0, 1.0);gl_FragColor = vec4(intensity, intensity, intensity, 1.0);if (invert == 1)gl_FragColor.rgb = 1.0 - gl_FragColor.rgb;}";var Me={};var Ve={storedPixelDataToImageData:function(e){return e.getPixelData()}};Me.frag="precision mediump float;uniform sampler2D u_image;uniform float ww;uniform float wc;uniform float slope;uniform float intercept;uniform int invert;varying vec2 v_texCoord;void main() {vec4 color = texture2D(u_image, v_texCoord);float intensity = color.r*256.0;intensity = intensity * slope + intercept;float center0 = wc - 0.5;float width0 = max(ww, 1.0);intensity = (intensity - center0) / width0 + 0.5;intensity = clamp(intensity, 0.0, 1.0);gl_FragColor = vec4(intensity, intensity, intensity, 1.0);if (invert == 1)gl_FragColor.rgb = 1.0 - gl_FragColor.rgb;}";var Oe={int16:Te,int8:Ae,rgb:Pe,uint16:Re,uint8:Me},Ue={int16:Le,int8:De,rgb:Se,uint16:_e,uint8:Ve},Ne="attribute vec2 a_position;attribute vec2 a_texCoord;uniform vec2 u_resolution;varying vec2 v_texCoord;void main() {vec2 zeroToOne = a_position / u_resolution;vec2 zeroToTwo = zeroToOne * 2.0;vec2 clipSpace = zeroToTwo - 1.0;gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);v_texCoord = a_texCoord;}",Be={},Fe=[],Ge=268435456,ze=0;function ke(){if(!(ze<=Ge)){for(Fe.sort(function(e,t){return e.timeStamp>t.timeStamp?-1:e.timeStamp<t.timeStamp?1:0});Ge<ze;){var e=Fe[Fe.length-1];ze-=e.sizeInBytes,delete Be[e.imageId],Fe.pop(),D(o,C.WEBGL_TEXTURE_REMOVED,{imageId:e.imageId})}var t={maximumSizeInBytes:Ge,cacheSizeInBytes:ze,numberOfImagesCached:Fe.length};D(o,C.WEBGL_TEXTURE_CACHE_FULL,t)}}var We={purgeCache:function(){for(;0<Fe.length;){var e=Fe.pop();delete Be[e.imageId]}ze=0},getImageTexture:function(e){if(void 0===e)throw new Error("getImageTexture: imageId must not be undefined");var t=Be[e];if(void 0!==t)return t.timeStamp=new Date,t.imageTexture},putImageTexture:function(e,t){var r=e.imageId;if(void 0===e)throw new Error("putImageTexture: image must not be undefined");if(void 0===r)throw new Error("putImageTexture: imageId must not be undefined");if(void 0===t)throw new Error("putImageTexture: imageTexture must not be undefined");if(!0===Object.prototype.hasOwnProperty.call(Be,r))throw new Error("putImageTexture: imageId already in cache");var a={imageId:r,imageTexture:t,timeStamp:new Date,sizeInBytes:t.sizeInBytes};if(Be[r]=a,Fe.push(a),void 0===t.sizeInBytes)throw new Error("putImageTexture: imageTexture.sizeInBytes must not be undefined");if(void 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a=e.createProgram();if(e.attachShader(a,t),e.attachShader(a,r),e.linkProgram(a),!e.getProgramParameter(a,e.LINK_STATUS)&&!e.isContextLost()){var n=e.getProgramInfoLog(a);console.error("WebGL program filed to link:\n".concat(n))}return a}(e,je(e,t,e.VERTEX_SHADER),je(e,r,e.FRAGMENT_SHADER))},Ke=document.createElement("canvas"),Ze=!1;function Je(){!0!==Ze&&function(e){He=null;try{var t={preserveDrawingBuffer:!0};He=e.getContext("webgl",t)||e.getContext("experimental-webgl",t),e.removeEventListener("webglcontextlost",Qe,!1),e.addEventListener("webglcontextlost",Qe,!1),e.removeEventListener("webglcontextrestored",$e,!1),e.addEventListener("webglcontextrestored",$e,!1)}catch(e){throw new Error("Error creating WebGL context")}He||(console.error("Unable to initialize WebGL. 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t instanceof Int16Array?"int16":t instanceof Uint16Array?"uint16":t instanceof Int8Array?"int8":"uint8"}function tt(e){var t=We.getImageTexture(e.imageId);return t||(t=function(e){var t={uint8:He.LUMINANCE,int8:He.LUMINANCE_ALPHA,uint16:He.LUMINANCE_ALPHA,int16:He.RGB,rgb:He.RGB},r=et(e),a=t[r],n=He.createTexture();He.bindTexture(He.TEXTURE_2D,n),He.texParameteri(He.TEXTURE_2D,He.TEXTURE_MIN_FILTER,He.NEAREST),He.texParameteri(He.TEXTURE_2D,He.TEXTURE_MAG_FILTER,He.NEAREST),He.texParameteri(He.TEXTURE_2D,He.TEXTURE_WRAP_S,He.CLAMP_TO_EDGE),He.texParameteri(He.TEXTURE_2D,He.TEXTURE_WRAP_T,He.CLAMP_TO_EDGE),He.pixelStorei(He.UNPACK_ALIGNMENT,1);var i=Ue[r].storedPixelDataToImageData(e,e.width,e.height);return He.texImage2D(He.TEXTURE_2D,0,a,e.width,e.height,0,a,He.UNSIGNED_BYTE,i),{texture:n,sizeInBytes:e.width*e.height*{int8:1,uint16:2,int16:3,rgb:3}[r]}}(e),We.putImageTexture(e,t)),t.texture}function rt(e,t,r,a,n){for(var i in He.clearColor(1,0,0,1),He.viewport(0,0,a,n),He.clear(He.COLOR_BUFFER_BIT|He.DEPTH_BUFFER_BIT),He.useProgram(e.program),He.bindBuffer(He.ARRAY_BUFFER,Xe),He.vertexAttribPointer(e.attributes.texCoordLocation,2,He.FLOAT,!1,0,0),He.bindBuffer(He.ARRAY_BUFFER,Ye),He.vertexAttribPointer(e.attributes.positionLocation,2,He.FLOAT,!1,0,0),t){var o=He.getUniformLocation(e.program,i);if(o){var l=t[i],s=l.type,d=l.value;"i"===s?He.uniform1i(o,d):"f"===s?He.uniform1f(o,d):"2f"===s&&He.uniform2f(o,d[0],d[1])}}var u,m,c;m=a,c=n,(u=He).bufferData(u.ARRAY_BUFFER,new Float32Array([m,c,0,c,m,0,0,0]),u.STATIC_DRAW),He.activeTexture(He.TEXTURE0),He.bindTexture(He.TEXTURE_2D,r),He.drawArrays(He.TRIANGLE_STRIP,0,4)}var at={createProgramFromString:qe,renderer:{render:function(e){var t=e.image;Ke.width=t.width,Ke.height=t.height;var r,a=e.viewport,n=(r=et(t),Oe.hasOwnProperty(r)?Oe[r]:Oe.rgb),i=tt(t);return rt(n,{u_resolution:{type:"2f",value:[t.width,t.height]},wc:{type:"f",value:a.voi.windowCenter},ww:{type:"f",value:a.voi.windowWidth},slope:{type:"f",value:t.slope},intercept:{type:"f",value:t.intercept},minPixelValue:{type:"f",value:t.minPixelValue},invert:{type:"i",value:a.invert?1:0}},i,t.width,t.height),Ke},initRenderer:Je,getRenderCanvas:function(){return Ke},isWebGLAvailable:function(){var e={failIfMajorPerformanceCaveat:!0};try{var t=document.createElement("canvas");return Boolean(window.WebGLRenderingContext)&&(t.getContext("webgl",e)||t.getContext("experimental-webgl",e))}catch(e){return!1}}},textureCache:We};Object.defineProperty(at,"isWebGLInitialized",{enumerable:!0,configurable:!1,get:function(){return Ze}});var nt=at;function it(e,t){if(!((r=e).voiLUT&&r.voiLUT.lut&&0<r.voiLUT.lut.length||void 0!==r.voi.windowWidth&&void 0!==r.voi.windowCenter)){var r,a=t.maxPixelValue*t.slope+t.intercept,n=t.minPixelValue*t.slope+t.intercept,i=a-n,o=(a+n)/2;void 0===e.voi?e.voi={windowWidth:i,windowCenter:o}:(e.voi.windowWidth=i,e.voi.windowCenter=o)}}var ot=function(e,t){return!e&&!t||!(!e||!t)&&e.id===t.id};var lt=function(e,t,r){return r?(n=(a=r).lut[0],i=a.lut[a.lut.length-1],o=a.firstValueMapped+a.lut.length,function(e){return e<a.firstValueMapped?n:o<=e?i:a.lut[e]}):(l=e,s=t,function(e){return e*l+s});var a,n,i,o,l,s};function st(e){return function(e){if(Array.isArray(e)){for(var t=0,r=new Array(e.length);t<e.length;t++)r[t]=e[t];return r}}(e)||function(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance")}()}var dt=function(e,t,r){return r?(a=r,n=Math.max.apply(Math,st(a.lut)).toString(2).length-8,i=a.lut[0]>>n,o=a.lut[a.lut.length-1]>>n,l=a.firstValueMapped+a.lut.length-1,function(e){return e<a.firstValueMapped?i:l<=e?o:a.lut[e-a.firstValueMapped]>>n}):(s=e,d=t,function(e){return 255*((e-d)/s+.5)});var a,n,i,o,l,s,d},ut=function(e,t,r,a,n,i){var o=e.maxPixelValue,l=e.minPixelValue,s=Math.min(l,0);if(void 0===e.cachedLut){var d=o-s+1;e.cachedLut={},e.cachedLut.lutArray=new Uint8ClampedArray(d)}var u=e.cachedLut.lutArray,m=lt(e.slope,e.intercept,n),c=dt(t,r,i);if(!0===a)for(var v=l;v<=o;v++)u[v+-s]=255-c(m(v));else for(var g=l;g<=o;g++)u[g+-s]=c(m(g));return u},mt=function(e,t,r){return void 0!==e.cachedLut&&e.cachedLut.windowCenter===t.voi.windowCenter&&e.cachedLut.windowWidth===t.voi.windowWidth&&ot(e.cachedLut.modalityLUT,t.modalityLUT)&&ot(e.cachedLut.voiLUT,t.voiLUT)&&e.cachedLut.invert===t.invert&&!0!==r||(it(t,e),ut(e,t.voi.windowWidth,t.voi.windowCenter,t.invert,t.modalityLUT,t.voiLUT),e.cachedLut.windowWidth=t.voi.windowWidth,e.cachedLut.windowCenter=t.voi.windowCenter,e.cachedLut.invert=t.invert,e.cachedLut.voiLUT=t.voiLUT,e.cachedLut.modalityLUT=t.modalityLUT),e.cachedLut.lutArray},ct=function(e,t){var r=e.renderingTools.lastRenderedImageId,a=e.renderingTools.lastRenderedViewport;return t.imageId!==r||!a||a.windowCenter!==e.viewport.voi.windowCenter||a.windowWidth!==e.viewport.voi.windowWidth||a.invert!==e.viewport.invert||a.rotation!==e.viewport.rotation||a.hflip!==e.viewport.hflip||a.vflip!==e.viewport.vflip||a.modalityLUT!==e.viewport.modalityLUT||a.voiLUT!==e.viewport.voiLUT||a.colormap!==e.viewport.colormap},vt=function(e,t){var r=e.renderingTools.renderCanvas;r.width=t.width,r.height=t.height;var a=r.getContext("2d");a.fillStyle="white",a.fillRect(0,0,r.width,r.height);var n=a.getImageData(0,0,t.width,t.height);e.renderingTools.renderCanvasContext=a,e.renderingTools.renderCanvasData=n},gt=function(e){var t=e.image.imageId,r=e.viewport,a=e.image.color;return e.renderingTools.lastRenderedImageId=t,e.renderingTools.lastRenderedIsColor=a,e.renderingTools.lastRenderedViewport={windowCenter:r.voi.windowCenter,windowWidth:r.voi.windowWidth,invert:r.invert,rotation:r.rotation,hflip:r.hflip,vflip:r.vflip,modalityLUT:r.modalityLUT,voiLUT:r.voiLUT,colormap:r.colormap},e.renderingTools};function ft(e,t,r){var a=!(3<arguments.length&&void 0!==arguments[3])||arguments[3],n=!0===e.renderingTools.lastRenderedIsColor;e.renderingTools.renderCanvas&&!n||(e.renderingTools.renderCanvas=document.createElement("canvas"),vt(e,t));var i=e.renderingTools.renderCanvas;if(!1===ct(e,t)&&!0!==r)return i;i.width===t.width&&i.height===t.height||vt(e,t);var o=he(),l=mt(t,e.viewport,r);t.stats=t.stats||{},t.stats.lastLutGenerateTime=he()-o;var s=e.renderingTools.renderCanvasData,d=e.renderingTools.renderCanvasContext;return a?Ee(t,l,s.data):Ie(t,l,s.data),o=he(),d.putImageData(s,0,0),t.stats.lastPutImageDataTime=he()-o,i}function ht(e,t){if(void 0===e)throw new 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n=e.renderingTools.renderCanvas;if(255===e.viewport.voi.windowWidth&&128===e.viewport.voi.windowCenter&&!1===e.viewport.invert&&t.getCanvas&&t.getCanvas())return t.getCanvas();if(!1===ct(e,t)&&!0!==r)return n;n.width===t.width&&n.height===t.height||vt(e,t);var i,o,l=he(),s=(i=t,o=e.viewport,void 0!==i.cachedLut&&i.cachedLut.windowCenter===o.voi.windowCenter&&i.cachedLut.windowWidth===o.voi.windowWidth&&i.cachedLut.invert===o.invert||(pt(i,o.voi.windowWidth,o.voi.windowCenter,o.invert),i.cachedLut.windowWidth=o.voi.windowWidth,i.cachedLut.windowCenter=o.voi.windowCenter,i.cachedLut.invert=o.invert),i.cachedLut.lutArray);t.stats=t.stats||{},t.stats.lastLutGenerateTime=he()-l;var d=e.renderingTools.renderCanvasData,u=e.renderingTools.renderCanvasContext;return t.rgba?bt(t,s,d.data):wt(t,s,d.data),l=he(),u.putImageData(d,0,0),t.stats.lastPutImageDataTime=he()-l,n}function xt(e,t){if(void 0===e)throw new Error("renderColorImage: enabledElement parameter must not be undefined");var r=e.image;if(void 0===r)throw new Error("renderColorImage: image must be loaded before it can be drawn");var a,n=e.canvas.getContext("2d");n.setTransform(1,0,0,1,0,0),n.fillStyle="black",n.fillRect(0,0,e.canvas.width,e.canvas.height),n.imageSmoothingEnabled=!e.viewport.pixelReplication,n.mozImageSmoothingEnabled=n.imageSmoothingEnabled,Ce(e,n),a=e.options&&e.options.renderer&&"webgl"===e.options.renderer.toLowerCase()?nt.renderer.render(e):yt(e,r,t);var i=e.viewport.displayedArea.tlhc.x-1,o=e.viewport.displayedArea.tlhc.y-1,l=e.viewport.displayedArea.brhc.x-i,s=e.viewport.displayedArea.brhc.y-o;n.drawImage(a,i,o,l,s,0,0,l,s),e.renderingTools=gt(e)}var Et=function(e,t,r,a){var n=he(),i=e.getPixelData();e.stats.lastGetPixelDataTime=he()-n;var o,l,s=i.length,d=e.minPixelValue,u=0,m=0;if(n=he(),l=r instanceof G.LookupTable?r.Table:r,d<0)for(;m<s;)o=l[t[i[m++]+-d]],a[u++]=o[0],a[u++]=o[1],a[u++]=o[2],a[u++]=o[3];else for(;m<s;)o=l[t[i[m++]]],a[u++]=o[0],a[u++]=o[1],a[u++]=o[2],a[u++]=o[3];e.stats.lastStoredPixelDataToCanvasImageDataTime=he()-n};function It(e,t,r){e.renderingTools.renderCanvas||(e.renderingTools.renderCanvas=document.createElement("canvas"));var a=e.renderingTools.renderCanvas,n=e.viewport.colormap||e.options.colormap;if(e.options.colormap&&console.warn("enabledElement.options.colormap is deprecated. 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a=e.canvas.getContext("2d");a.setTransform(1,0,0,1,0,0),a.fillStyle="black",a.fillRect(0,0,e.canvas.width,e.canvas.height),a.imageSmoothingEnabled=!e.viewport.pixelReplication,a.mozImageSmoothingEnabled=a.imageSmoothingEnabled,Ce(e,a);var n=Lt(e,r,t),i=e.viewport.displayedArea.tlhc.x-1,o=e.viewport.displayedArea.tlhc.y-1,l=e.viewport.displayedArea.brhc.x-i,s=e.viewport.displayedArea.brhc.y-o;a.drawImage(n,i,o,l,s,0,0,l,s),e.renderingTools=gt(e)}function Dt(e){var t=e.syncProps||{};t.originalScale=e.viewport.scale,e.syncProps=t}function Pt(e,n){e.forEach(function(e){if(e!==n&&e.viewport&&n.viewport){e.syncProps||Dt(e);var t,r,a=(r=e,(t=n).syncProps||Dt(t),r.syncProps||Dt(r),r.syncProps.originalScale/t.syncProps.originalScale);e.viewport.scale=n.viewport.scale*a,e.viewport.rotation=n.viewport.rotation,e.viewport.translation={x:n.viewport.translation.x/a,y:n.viewport.translation.y/a},e.viewport.hflip=n.viewport.hflip,e.viewport.vflip=n.viewport.vflip}})}function St(d,e,u){e.forEach(function(e,t){if(e.image){d.save(),e.canvas=d.canvas,Ce(e,d);var r=e.viewport.colormap||e.options.colormap,a=e.viewport.labelmap,n=e.invalid||u;if(r&&""!==r&&!0===a)!function(e,t){if(void 0===e)throw new Error("addLabelMapLayer: layer parameter must not be undefined");var r=e.image;if(void 0===r)throw new Error("addLabelMapLayer: image must be loaded before it can be drawn");e.canvas=Lt(e,r,t);var a=e.canvas.getContext("2d");a.imageSmoothingEnabled=!e.viewport.pixelReplication,a.mozImageSmoothingEnabled=a.imageSmoothingEnabled,e.renderingTools=gt(e)}(e,n);else if(r&&""!==r)!function(e,t){if(void 0===e)throw new Error("addPseudoColorLayer: layer parameter must not be undefined");var r=e.image;if(void 0===r)throw new Error("addPseudoColorLayer: image must be loaded before it can be drawn");e.canvas=It(e,r,t);var a=e.canvas.getContext("2d");a.imageSmoothingEnabled=!e.viewport.pixelReplication,a.mozImageSmoothingEnabled=a.imageSmoothingEnabled,e.renderingTools=gt(e)}(e,n);else if(!0===e.image.color)!function(e,t){if(void 0===e)throw new Error("addColorLayer: layer parameter must not be undefined");var r=e.image;if(void 0===r)throw new Error("addColorLayer: image must be loaded before it can be drawn");r.rgba=!0,e.canvas=yt(e,r,t);var a=e.canvas.getContext("2d");a.imageSmoothingEnabled=!e.viewport.pixelReplication,a.mozImageSmoothingEnabled=a.imageSmoothingEnabled,e.renderingTools=gt(e)}(e,n);else{!function(e,t){var r=2<arguments.length&&void 0!==arguments[2]&&arguments[2];if(void 0===e)throw new Error("addGrayscaleLayer: layer parameter must not be undefined");var a=e.image;if(void 0===a)throw new Error("addGrayscaleLayer: image must be loaded before it can be drawn");e.canvas=ft(e,a,t,r);var n=e.canvas.getContext("2d");n.imageSmoothingEnabled=!e.viewport.pixelReplication,n.mozImageSmoothingEnabled=n.imageSmoothingEnabled,e.renderingTools=gt(e)}(e,n,0===t)}e.options&&e.options.opacity?d.globalAlpha=e.options.opacity:d.globalAlpha=1,e.options&&e.options.fillStyle&&(d.fillStyle=e.options.fillStyle),d.imageSmoothingEnabled=!e.viewport.pixelReplication,d.mozImageSmoothingEnabled=d.imageSmoothingEnabled;var i=e.viewport.displayedArea.tlhc.x-1,o=e.viewport.displayedArea.tlhc.y-1,l=e.viewport.displayedArea.brhc.x-i,s=e.viewport.displayedArea.brhc.y-o;d.drawImage(e.canvas,i,o,l,s,0,0,l,s),d.restore(),e.invalid=!1}})}var Rt=function(e,t){var r=e.image,a=e.element,n=e.layers||[];if(e.canvas&&(e.image||n.length)){var i=he();if(r.stats={lastGetPixelDataTime:-1,lastStoredPixelDataToCanvasImageDataTime:-1,lastPutImageDataTime:-1,lastRenderTime:-1,lastLutGenerateTime:-1},n&&n.length)!function(e,t){var r=e.element,a=x(r),n=S(r),i=E(r),o=!e.lastSyncViewportsState&&e.syncViewports;e.lastSyncViewportsState=e.syncViewports,o&&a.forEach(function(e){e.viewport&&Dt(e)}),!0===e.syncViewports&&Pt(i,n);var l=e.canvas.getContext("2d");l.setTransform(1,0,0,1,0,0),l.fillStyle="black",l.fillRect(0,0,e.canvas.width,e.canvas.height),St(l,i,t)}(e,t);else if(r){var o=r.render;o||(o=e.viewport.colormap&&""!==e.viewport.colormap&&!0===e.image.labelmap?At:e.viewport.colormap&&""!==e.viewport.colormap?Ct:r.color?xt:ht),o(e,t)}var l=he()-i,s={viewport:e.viewport,element:a,image:r,enabledElement:e,canvasContext:e.canvas.getContext("2d"),renderTimeInMs:l};r.stats.lastRenderTime=l,e.invalid=!1,e.needsRedraw=!1,D(a,C.IMAGE_RENDERED,s)}};var _t=function(e){return window.requestAnimationFrame(e)||window.webkitRequestAnimationFrame(e)||window.mozRequestAnimationFrame(e)||window.oRequestAnimationFrame(e)||window.msRequestAnimationFrame(e)||(t=e,void window.setTimeout(t,1e3/60));var t},Mt=function(e){return nt.renderer.isWebGLAvailable()?(nt.renderer.initRenderer(),e.renderer="webgl",!0):(console.error("WebGL not available, falling back to Canvas renderer"),delete e.renderer,!1)},Vt="cornerstone-canvas";function Ot(e){var t,r,a="canvas.".concat(Vt);return e.querySelector(a)||(t=e,(r=document.createElement("canvas")).style.display="block",r.classList.add(Vt),t.appendChild(r),r)}var Ut=function(e,t){if(void 0===e)throw new Error("enable: parameter element cannot be undefined");t&&t.renderer&&"webgl"===t.renderer.toLowerCase()&&Mt(t);var r,n={element:e,canvas:Ot(e),image:void 0,invalid:!1,needsRedraw:!0,options:t,layers:[],data:{},renderingTools:{},uuid:(r=(new Date).getTime(),"undefined"!=typeof performance&&"function"==typeof performance.now&&(r+=performance.now()),"x.x.x.x.x.x.xxxx.xxx.x.x.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx".replace(/[xy]/g,function(e){var t=(r+16*Math.random())%16|0;return 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