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Diffstat (limited to 'graphics/asymptote/base/webgl/asygl.js')
-rw-r--r--graphics/asymptote/base/webgl/asygl.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/graphics/asymptote/base/webgl/asygl.js b/graphics/asymptote/base/webgl/asygl.js
index f33ee3ef54..4de87cda58 100644
--- a/graphics/asymptote/base/webgl/asygl.js
+++ b/graphics/asymptote/base/webgl/asygl.js
@@ -36,4 +36,4 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.*/
-let vertex="\n#ifdef WEBGL2\n#define IN in\n#define OUT out\n#else\n#define IN attribute\n#define OUT varying\n#endif\n\nIN vec3 position;\n#ifdef WIDTH\nIN float width;\n#endif\n#ifdef NORMAL\nIN vec3 normal;\n#endif\n\nIN float materialIndex;\n\n#ifdef WEBGL2\nflat out int MaterialIndex;\n#ifdef COLOR\nOUT vec4 Color;\n#endif\n\n#else\nOUT vec4 diffuse;\nOUT vec3 specular;\nOUT float roughness,metallic,fresnel0;\nOUT vec4 emissive;\n\nstruct Material {\n vec4 diffuse,emissive,specular;\n vec4 parameters;\n};\n\nuniform Material Materials[Nmaterials];\n#endif\n\n#ifdef COLOR\nIN vec4 color;\n#endif\n\nuniform mat3 normMat;\nuniform mat4 viewMat;\nuniform mat4 projViewMat;\n\n#ifdef NORMAL\n#ifndef ORTHOGRAPHIC\nOUT vec3 ViewPosition;\n#endif\nOUT vec3 Normal;\n#endif\n\nvoid main(void)\n{\n vec4 v=vec4(position,1.0);\n gl_Position=projViewMat*v;\n\n#ifdef NORMAL\n#ifndef ORTHOGRAPHIC\n ViewPosition=(viewMat*v).xyz;\n#endif\n Normal=normalize(normal*normMat);\n#endif\n\n#ifdef WEBGL2\n MaterialIndex=int(materialIndex);\n#ifdef COLOR\n Color=color;\n#endif\n#else\n#ifdef NORMAL\n Material m;\n#ifdef TRANSPARENT\n m=Materials[int(abs(materialIndex))-1];\n emissive=m.emissive;\n if(materialIndex >= 0.0)\n diffuse=m.diffuse;\n else {\n diffuse=color;\n#if nlights == 0\n emissive += color;\n#endif\n }\n#else\n m=Materials[int(materialIndex)];\n emissive=m.emissive;\n#ifdef COLOR\n diffuse=color;\n#if nlights == 0\n emissive += color;\n#endif\n#else\n diffuse=m.diffuse;\n#endif // COLOR\n#endif // TRANSPARENT\n specular=m.specular.rgb;\n vec4 parameters=m.parameters;\n roughness=1.0-parameters[0];\n metallic=parameters[1];\n fresnel0=parameters[2];\n#else\n emissive=Materials[int(materialIndex)].emissive;\n#endif // NORMAL\n#endif // WEBGL2\n\n#ifdef WIDTH\n gl_PointSize=width;\n#endif\n}\n",fragment="\n#ifdef WEBGL2\n#define IN in\nout vec4 outValue;\n#define OUTVALUE outValue\n#else\n#define IN varying\n#define OUTVALUE gl_FragColor\n#endif\n\n#ifdef WEBGL2\nflat in int MaterialIndex;\n\nstruct Material {\n vec4 diffuse,emissive,specular;\n vec4 parameters;\n};\n\nuniform Material Materials[Nmaterials];\n\nvec4 diffuse;\nvec3 specular;\nfloat roughness,metallic,fresnel0;\nvec4 emissive;\n\n#ifdef COLOR\nin vec4 Color;\n#endif\n\n#else\nIN vec4 diffuse;\nIN vec3 specular;\nIN float roughness,metallic,fresnel0;\nIN vec4 emissive;\n#endif\n\n#ifdef NORMAL\n\n#ifndef ORTHOGRAPHIC\nIN vec3 ViewPosition;\n#endif\nIN vec3 Normal;\n\nvec3 normal;\n\nstruct Light {\n vec3 direction;\n vec3 color;\n};\n\nuniform Light Lights[Nlights];\n\n#ifdef USE_IBL\nuniform sampler2D reflBRDFSampler;\nuniform sampler2D diffuseSampler;\nuniform sampler2D reflImgSampler;\n\nconst float pi=acos(-1.0);\nconst float piInv=1.0/pi;\nconst float twopi=2.0*pi;\nconst float twopiInv=1.0/twopi;\n\n// (x,y,z) -> (r,theta,phi);\n// theta -> [0,pi]: colatitude\n// phi -> [-pi,pi]: longitude\nvec3 cart2sphere(vec3 cart)\n{\n float x=cart.x;\n float y=cart.z;\n float z=cart.y;\n\n float r=length(cart);\n float theta=r > 0.0 ? acos(z/r) : 0.0;\n float phi=atan(y,x);\n\n return vec3(r,theta,phi);\n}\n\nvec2 normalizedAngle(vec3 cartVec)\n{\n vec3 sphericalVec=cart2sphere(cartVec);\n sphericalVec.y=sphericalVec.y*piInv;\n sphericalVec.z=0.75-sphericalVec.z*twopiInv;\n return sphericalVec.zy;\n}\n\nvec3 IBLColor(vec3 viewDir)\n{\n vec3 IBLDiffuse=diffuse.rgb*texture(diffuseSampler,normalizedAngle(normal)).rgb;\n vec3 reflectVec=normalize(reflect(-viewDir,normal));\n vec2 reflCoord=normalizedAngle(reflectVec);\n vec3 IBLRefl=textureLod(reflImgSampler,reflCoord,roughness*ROUGHNESS_STEP_COUNT).rgb;\n vec2 IBLbrdf=texture(reflBRDFSampler,vec2(dot(normal,viewDir),roughness)).rg;\n float specularMultiplier=fresnel0*IBLbrdf.x+IBLbrdf.y;\n vec3 dielectric=IBLDiffuse+specularMultiplier*IBLRefl;\n vec3 metal=diffuse.rgb*IBLRefl;\n return mix(dielectric,metal,metallic);\n}\n#else\nfloat Roughness2;\nfloat NDF_TRG(vec3 h)\n{\n float ndoth=max(dot(normal,h),0.0);\n float alpha2=Roughness2*Roughness2;\n float denom=ndoth*ndoth*(alpha2-1.0)+1.0;\n return denom != 0.0 ? alpha2/(denom*denom) : 0.0;\n}\n\nfloat GGX_Geom(vec3 v)\n{\n float ndotv=max(dot(v,normal),0.0);\n float ap=1.0+Roughness2;\n float k=0.125*ap*ap;\n return ndotv/((ndotv*(1.0-k))+k);\n}\n\nfloat Geom(vec3 v, vec3 l)\n{\n return GGX_Geom(v)*GGX_Geom(l);\n}\n\nfloat Fresnel(vec3 h, vec3 v, float fresnel0)\n{\n float a=1.0-max(dot(h,v),0.0);\n float b=a*a;\n return fresnel0+(1.0-fresnel0)*b*b*a;\n}\n\n// physical based shading using UE4 model.\nvec3 BRDF(vec3 viewDirection, vec3 lightDirection)\n{\n vec3 lambertian=diffuse.rgb;\n vec3 h=normalize(lightDirection+viewDirection);\n\n float omegain=max(dot(viewDirection,normal),0.0);\n float omegaln=max(dot(lightDirection,normal),0.0);\n\n float D=NDF_TRG(h);\n float G=Geom(viewDirection,lightDirection);\n float F=Fresnel(h,viewDirection,fresnel0);\n\n float denom=4.0*omegain*omegaln;\n float rawReflectance=denom > 0.0 ? (D*G)/denom : 0.0;\n\n vec3 dielectric=mix(lambertian,rawReflectance*specular,F);\n vec3 metal=rawReflectance*diffuse.rgb;\n\n return mix(dielectric,metal,metallic);\n}\n#endif\n\n#endif\n\nvoid main(void)\n{\n#ifdef WEBGL2\n#ifdef NORMAL\n Material m;\n#ifdef TRANSPARENT\n m=Materials[abs(MaterialIndex)-1];\n emissive=m.emissive;\n if(MaterialIndex >= 0)\n diffuse=m.diffuse;\n else {\n diffuse=Color;\n#if nlights == 0\n emissive += Color;\n#endif\n }\n#else\n m=Materials[MaterialIndex];\n emissive=m.emissive;\n#ifdef COLOR\n diffuse=Color;\n#if nlights == 0\n emissive += Color;\n#endif\n#else\n diffuse=m.diffuse;\n#endif // COLOR\n#endif // TRANSPARENT\n specular=m.specular.rgb;\n vec4 parameters=m.parameters;\n roughness=1.0-parameters[0];\n metallic=parameters[1];\n fresnel0=parameters[2];\n#else\n emissive=Materials[MaterialIndex].emissive;\n#endif // NORMAL\n#endif // WEBGL2\n\n#if defined(NORMAL) && nlights > 0\n normal=normalize(Normal);\n normal=gl_FrontFacing ? normal : -normal;\n#ifdef ORTHOGRAPHIC\n vec3 viewDir=vec3(0.0,0.0,1.0);\n#else\n vec3 viewDir=-normalize(ViewPosition);\n#endif\n\nvec3 color;\n#ifdef USE_IBL\n color=IBLColor(viewDir);\n#else\n Roughness2=roughness*roughness;\n color=emissive.rgb;\n for(int i=0; i < nlights; ++i) {\n Light Li=Lights[i];\n vec3 L=Li.direction;\n float cosTheta=max(dot(normal,L),0.0);\n vec3 radiance=cosTheta*Li.color;\n color += BRDF(viewDir,L)*radiance;\n }\n#endif\n OUTVALUE=vec4(color,diffuse.a);\n#else\n OUTVALUE=emissive;\n#endif\n}\n";!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var i=t();for(var a in i)("object"==typeof exports?exports:e)[a]=i[a]}}("undefined"!=typeof self?self:this,(function(){return function(e){var t={};function i(a){if(t[a])return t[a].exports;var n=t[a]={i:a,l:!1,exports:{}};return e[a].call(n.exports,n,n.exports,i),n.l=!0,n.exports}return 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null;y*=O=1/O,L*=O,D*=O,r=Math.sin(i),s=Math.cos(i),o=1-s,l=t[0],h=t[1],c=t[2],d=t[3],m=t[4],f=t[5],u=t[6],p=t[7],g=t[8],v=t[9],x=t[10],w=t[11],M=y*y*o+s,b=L*y*o+D*r,T=D*y*o-L*r,S=y*L*o-D*r,R=L*L*o+s,A=D*L*o+y*r,I=y*D*o+L*r,P=L*D*o-y*r,E=D*D*o+s,e[0]=l*M+m*b+g*T,e[1]=h*M+f*b+v*T,e[2]=c*M+u*b+x*T,e[3]=d*M+p*b+w*T,e[4]=l*S+m*R+g*A,e[5]=h*S+f*R+v*A,e[6]=c*S+u*R+x*A,e[7]=d*S+p*R+w*A,e[8]=l*I+m*P+g*E,e[9]=h*I+f*P+v*E,e[10]=c*I+u*P+x*E,e[11]=d*I+p*P+w*E,t!==e&&(e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15]);return e},t.fromTranslation=function(e,t){return e[0]=1,e[1]=0,e[2]=0,e[3]=0,e[4]=0,e[5]=1,e[6]=0,e[7]=0,e[8]=0,e[9]=0,e[10]=1,e[11]=0,e[12]=t[0],e[13]=t[1],e[14]=t[2],e[15]=1,e},t.fromRotation=function(e,t,i){var n,r,s,o=i[0],l=i[1],h=i[2],c=Math.sqrt(o*o+l*l+h*h);if(Math.abs(c)<a.EPSILON)return null;return 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a=t[0],n=t[1],r=t[2],s=t[3],o=t[4],l=t[5],h=t[6],c=t[7],d=t[8],m=t[9],f=t[10],u=t[11],p=t[12],g=t[13],v=t[14],x=t[15],w=i[0],M=i[1],b=i[2],T=i[3];return e[0]=w*a+M*o+b*d+T*p,e[1]=w*n+M*l+b*m+T*g,e[2]=w*r+M*h+b*f+T*v,e[3]=w*s+M*c+b*u+T*x,w=i[4],M=i[5],b=i[6],T=i[7],e[4]=w*a+M*o+b*d+T*p,e[5]=w*n+M*l+b*m+T*g,e[6]=w*r+M*h+b*f+T*v,e[7]=w*s+M*c+b*u+T*x,w=i[8],M=i[9],b=i[10],T=i[11],e[8]=w*a+M*o+b*d+T*p,e[9]=w*n+M*l+b*m+T*g,e[10]=w*r+M*h+b*f+T*v,e[11]=w*s+M*c+b*u+T*x,w=i[12],M=i[13],b=i[14],T=i[15],e[12]=w*a+M*o+b*d+T*p,e[13]=w*n+M*l+b*m+T*g,e[14]=w*r+M*h+b*f+T*v,e[15]=w*s+M*c+b*u+T*x,e}}])}));let Transform,canvasWidth,canvasHeight,imageURL,image,minBound,maxBound,orthographic,angleOfView,initialZoom,viewportMargin,zoomFactor,zoomPinchFactor,zoomPinchCap,zoomStep,shiftHoldDistance,shiftWaitTime,vibrateTime,canvasWidth0,canvasHeight0,zoom0,embedded,canvas,gl,alpha,offscreen,context,maxMaterials,halfCanvasWidth,halfCanvasHeight,P=[],Materials=[],Lights=[],Centers=[],Background=[1,1,1,1],absolute=!1,ibl=!1,viewportShift=[0,0],webgl2=!1,nlights=0,Nmaterials=2,materials=[];const pixelResolution=.75,zoomRemeshFactor=1.5,FillFactor=.1,windowTrim=10,third=1/3,pi=Math.acos(-1),radians=pi/180;let Zoom,lastZoom,xshift,yshift,maxViewportWidth,maxViewportHeight,H,zmin,zmax,size2,ArcballFactor,rotMat=mat4.create(),projMat=mat4.create(),viewMat=mat4.create(),projViewMat=mat4.create(),normMat=mat3.create(),viewMat3=mat3.create(),cjMatInv=mat4.create(),Temp=mat4.create(),center={x:0,y:0,z:0},shift={x:0,y:0},viewParam={xmin:0,xmax:0,ymin:0,ymax:0,zmin:0,zmax:0},remesh=!0,wireframe=0,mouseDownOrTouchActive=!1,lastMouseX=null,lastMouseY=null,touchID=null,Positions=[],Normals=[],Colors=[],Indices=[],IBLReflMap=null,IBLDiffuseMap=null,IBLbdrfMap=null;function IBLReady(){return null!==IBLReflMap&&null!==IBLDiffuseMap&&null!==IBLbdrfMap}function SetIBL(){embedded||deleteShaders(),initShaders(ibl)}let roughnessStepCount=8;class Material{constructor(e,t,i,a,n,r){this.diffuse=e,this.emissive=t,this.specular=i,this.shininess=a,this.metallic=n,this.fresnel0=r}setUniform(e,t){let i=i=>gl.getUniformLocation(e,"Materials["+t+"]."+i);gl.uniform4fv(i("diffuse"),new Float32Array(this.diffuse)),gl.uniform4fv(i("emissive"),new Float32Array(this.emissive)),gl.uniform4fv(i("specular"),new Float32Array(this.specular)),gl.uniform4f(i("parameters"),this.shininess,this.metallic,this.fresnel0,0)}}let indexExt,TRIANGLES,material0Data,material1Data,materialData,colorData,transparentData,triangleData,materialIndex,enumPointLight=1,enumDirectionalLight=2;class Light{constructor(e,t){this.direction=e,this.color=t}setUniform(e,t){let i=i=>gl.getUniformLocation(e,"Lights["+t+"]."+i);gl.uniform3fv(i("direction"),new Float32Array(this.direction)),gl.uniform3fv(i("color"),new Float32Array(this.color))}}function initShaders(e=!1){let t=gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS);maxMaterials=Math.floor((t-14)/4),Nmaterials=Math.min(Math.max(Nmaterials,Materials.length),maxMaterials),pixelOpt=["WIDTH"],materialOpt=["NORMAL"],colorOpt=["NORMAL","COLOR"],transparentOpt=["NORMAL","COLOR","TRANSPARENT"],e&&(materialOpt.push("USE_IBL"),transparentOpt.push("USE_IBL")),pixelShader=initShader(pixelOpt),materialShader=initShader(materialOpt),colorShader=initShader(colorOpt),transparentShader=initShader(transparentOpt)}function deleteShaders(){gl.deleteProgram(transparentShader),gl.deleteProgram(colorShader),gl.deleteProgram(materialShader),gl.deleteProgram(pixelShader)}function saveAttributes(){let e=webgl2?window.top.document.asygl2[alpha]:window.top.document.asygl[alpha];e.gl=gl,e.nlights=Lights.length,e.Nmaterials=Nmaterials,e.maxMaterials=maxMaterials,e.pixelShader=pixelShader,e.materialShader=materialShader,e.colorShader=colorShader,e.transparentShader=transparentShader}function restoreAttributes(){let e=webgl2?window.top.document.asygl2[alpha]:window.top.document.asygl[alpha];gl=e.gl,nlights=e.nlights,Nmaterials=e.Nmaterials,maxMaterials=e.maxMaterials,pixelShader=e.pixelShader,materialShader=e.materialShader,colorShader=e.colorShader,transparentShader=e.transparentShader}function webGL(e,t){let i;return webgl2&&(i=e.getContext("webgl2",{alpha:t}),embedded&&!i)?(webgl2=!1,ibl=!1,initGL(!1),null):(i||(webgl2=!1,ibl=!1,i=e.getContext("webgl",{alpha:t})),i||alert("Could not initialize WebGL"),i)}function initGL(e=!0){if(ibl&&(webgl2=!0),alpha=Background[3]<1,embedded){let t=window.top.document;if(e&&(context=canvas.getContext("2d")),offscreen=webgl2?t.offscreen2:t.offscreen,offscreen||(offscreen=t.createElement("canvas"),webgl2?t.offscreen2=offscreen:t.offscreen=offscreen),webgl2?t.asygl2||(t.asygl2=Array(2)):t.asygl||(t.asygl=Array(2)),asygl=webgl2?t.asygl2:t.asygl,asygl[alpha]&&asygl[alpha].gl)restoreAttributes(),(Lights.length!=nlights||Math.min(Materials.length,maxMaterials)>Nmaterials)&&(initShaders(),saveAttributes());else{if(rc=webGL(offscreen,alpha),!rc)return;gl=rc,initShaders(),webgl2?t.asygl2[alpha]={}:t.asygl[alpha]={},saveAttributes()}}else gl=webGL(canvas,alpha),initShaders();indexExt=gl.getExtension("OES_element_index_uint"),TRIANGLES=gl.TRIANGLES,material0Data=new vertexBuffer(gl.POINTS),material1Data=new vertexBuffer(gl.LINES),materialData=new vertexBuffer,colorData=new vertexBuffer,transparentData=new vertexBuffer,triangleData=new vertexBuffer}function getShader(e,t,i,a=[]){let n=webgl2?"300 es":"100",r=Array(...a),s=[["nlights",0==wireframe?Lights.length:0],["Nmaterials",Nmaterials]],o=[["int","Nlights",Math.max(Lights.length,1)]];webgl2&&r.push("WEBGL2"),ibl&&s.push(["ROUGHNESS_STEP_COUNT",roughnessStepCount.toFixed(2)]),orthographic&&r.push("ORTHOGRAPHIC"),macros_str=s.map(e=>`#define ${e[0]} ${e[1]}`).join("\n"),define_str=r.map(e=>"#define "+e).join("\n"),const_str=o.map(e=>`const ${e[0]} ${e[1]}=${e[2]};`).join("\n"),ext_str=[].map(e=>`#extension ${e}: enable`).join("\n"),shaderSrc=`#version ${n}\n${ext_str}\n${define_str}\n${const_str}\n${macros_str}\n\n\n#ifdef GL_FRAGMENT_PRECISION_HIGH\nprecision highp float;\n#else\nprecision mediump float;\n#endif\n \n${t}\n `;let l=e.createShader(i);return e.shaderSource(l,shaderSrc),e.compileShader(l),e.getShaderParameter(l,e.COMPILE_STATUS)?l:(alert(e.getShaderInfoLog(l)),null)}function registerBuffer(e,t,i,a=gl.ARRAY_BUFFER){return e.length>0&&(0==t&&(t=gl.createBuffer(),i=!0),gl.bindBuffer(a,t),i&&gl.bufferData(a,e,gl.STATIC_DRAW)),t}function drawBuffer(e,t,i=e.indices){if(0==e.indices.length)return;let a=t!=pixelShader;setUniforms(e,t),null!=IBLDiffuseMap&&(gl.activeTexture(gl.TEXTURE0),gl.bindTexture(gl.TEXTURE_2D,IBLbdrfMap),gl.uniform1i(gl.getUniformLocation(t,"reflBRDFSampler"),0),gl.activeTexture(gl.TEXTURE1),gl.bindTexture(gl.TEXTURE_2D,IBLDiffuseMap),gl.uniform1i(gl.getUniformLocation(t,"diffuseSampler"),1),gl.activeTexture(gl.TEXTURE2),gl.bindTexture(gl.TEXTURE_2D,IBLReflMap),gl.uniform1i(gl.getUniformLocation(t,"reflImgSampler"),2));let n=remesh||e.partial||!e.rendered;e.verticesBuffer=registerBuffer(new Float32Array(e.vertices),e.verticesBuffer,n),gl.vertexAttribPointer(positionAttribute,3,gl.FLOAT,!1,a?24:16,0),a?Lights.length>0&&gl.vertexAttribPointer(normalAttribute,3,gl.FLOAT,!1,24,12):gl.vertexAttribPointer(widthAttribute,1,gl.FLOAT,!1,16,12),e.materialsBuffer=registerBuffer(new Int16Array(e.materialIndices),e.materialsBuffer,n),gl.vertexAttribPointer(materialAttribute,1,gl.SHORT,!1,2,0),t!=colorShader&&t!=transparentShader||(e.colorsBuffer=registerBuffer(new Uint8Array(e.colors),e.colorsBuffer,n),gl.vertexAttribPointer(colorAttribute,4,gl.UNSIGNED_BYTE,!0,0,0)),e.indicesBuffer=registerBuffer(indexExt?new Uint32Array(i):new Uint16Array(i),e.indicesBuffer,n,gl.ELEMENT_ARRAY_BUFFER),e.rendered=!0,gl.drawElements(a?wireframe?gl.LINES:e.type:gl.POINTS,i.length,indexExt?gl.UNSIGNED_INT:gl.UNSIGNED_SHORT,0)}class vertexBuffer{constructor(e){this.type=e||TRIANGLES,this.verticesBuffer=0,this.materialsBuffer=0,this.colorsBuffer=0,this.indicesBuffer=0,this.rendered=!1,this.partial=!1,this.clear()}clear(){this.vertices=[],this.materialIndices=[],this.colors=[],this.indices=[],this.nvertices=0,this.materials=[],this.materialTable=[]}vertex(e,t){return this.vertices.push(e[0]),this.vertices.push(e[1]),this.vertices.push(e[2]),this.vertices.push(t[0]),this.vertices.push(t[1]),this.vertices.push(t[2]),this.materialIndices.push(materialIndex),this.nvertices++}Vertex(e,t,i=[0,0,0,0]){return this.vertices.push(e[0]),this.vertices.push(e[1]),this.vertices.push(e[2]),this.vertices.push(t[0]),this.vertices.push(t[1]),this.vertices.push(t[2]),this.materialIndices.push(materialIndex),this.colors.push(i[0]),this.colors.push(i[1]),this.colors.push(i[2]),this.colors.push(i[3]),this.nvertices++}vertex0(e,t){return this.vertices.push(e[0]),this.vertices.push(e[1]),this.vertices.push(e[2]),this.vertices.push(t),this.materialIndices.push(materialIndex),this.nvertices++}iVertex(e,t,i,a=[0,0,0,0]){let n=6*e;this.vertices[n]=t[0],this.vertices[n+1]=t[1],this.vertices[n+2]=t[2],this.vertices[n+3]=i[0],this.vertices[n+4]=i[1],this.vertices[n+5]=i[2],this.materialIndices[e]=materialIndex;let r=4*e;this.colors[r]=a[0],this.colors[r+1]=a[1],this.colors[r+2]=a[2],this.colors[r+3]=a[3],this.indices.push(e)}append(e){append(this.vertices,e.vertices),append(this.materialIndices,e.materialIndices),append(this.colors,e.colors),appendOffset(this.indices,e.indices,this.nvertices),this.nvertices+=e.nvertices}}function append(e,t){let i=e.length,a=t.length;e.length+=a;for(let n=0;n<a;++n)e[i+n]=t[n]}function appendOffset(e,t,i){let a=e.length,n=t.length;e.length+=t.length;for(let r=0;r<n;++r)e[a+r]=t[r]+i}class Geometry{constructor(){this.data=new vertexBuffer,this.Onscreen=!1,this.m=[]}offscreen(e){let t=projViewMat,i=e[0],a=i[0],n=i[1],r=i[2],s=1/(t[3]*a+t[7]*n+t[11]*r+t[15]);this.x=this.X=(t[0]*a+t[4]*n+t[8]*r+t[12])*s,this.y=this.Y=(t[1]*a+t[5]*n+t[9]*r+t[13])*s;for(let i=1,a=e.length;i<a;++i){let a=e[i],n=a[0],r=a[1],s=a[2],o=1/(t[3]*n+t[7]*r+t[11]*s+t[15]),l=(t[0]*n+t[4]*r+t[8]*s+t[12])*o,h=(t[1]*n+t[5]*r+t[9]*s+t[13])*o;l<this.x?this.x=l:l>this.X&&(this.X=l),h<this.y?this.y=h:h>this.Y&&(this.Y=h)}return(this.X<-1.01||this.x>1.01||this.Y<-1.01||this.y>1.01)&&(this.Onscreen=!1,!0)}T(e){let t=this.c[0],i=this.c[1],a=this.c[2],n=e[0]-t,r=e[1]-i,s=e[2]-a;return[n*normMat[0]+r*normMat[3]+s*normMat[6]+t,n*normMat[1]+r*normMat[4]+s*normMat[7]+i,n*normMat[2]+r*normMat[5]+s*normMat[8]+a]}Tcorners(e,t){return[this.T(e),this.T([e[0],e[1],t[2]]),this.T([e[0],t[1],e[2]]),this.T([e[0],t[1],t[2]]),this.T([t[0],e[1],e[2]]),this.T([t[0],e[1],t[2]]),this.T([t[0],t[1],e[2]]),this.T(t)]}setMaterial(e,t){null==e.materialTable[this.MaterialIndex]&&(e.materials.length>=Nmaterials&&(e.partial=!0,t()),e.materialTable[this.MaterialIndex]=e.materials.length,e.materials.push(Materials[this.MaterialIndex])),materialIndex=e.materialTable[this.MaterialIndex]}render(){let e;if(this.setMaterialIndex(),0==this.CenterIndex?e=corners(this.Min,this.Max):(this.c=Centers[this.CenterIndex-1],e=this.Tcorners(this.Min,this.Max)),this.offscreen(e))return this.data.clear(),void this.notRendered();let t,i=this.controlpoints;if(0==this.CenterIndex){if(!remesh&&this.Onscreen)return void this.append();t=i}else{let e=i.length;t=Array(e);for(let a=0;a<e;++a)t[a]=this.T(i[a])}let a=orthographic?1:this.Min[2]/maxBound[2],n=.75*Math.hypot(a*(viewParam.xmax-viewParam.xmin),a*(viewParam.ymax-viewParam.ymin))/size2;this.res2=n*n,this.Epsilon=.1*n,this.data.clear(),this.notRendered(),this.Onscreen=!0,this.process(t)}}class BezierPatch extends Geometry{constructor(e,t,i,a,n,r){super(),this.controlpoints=e,this.CenterIndex=t,this.MaterialIndex=i,this.Min=a,this.Max=n,this.color=r;let s=e.length;if(r){let e=r[0][3]+r[1][3]+r[2][3];this.transparent=16==s||4==s?e+r[3][3]<1020:e<765}else this.transparent=Materials[i].diffuse[3]<1;this.vertex=this.transparent?this.data.Vertex.bind(this.data):this.data.vertex.bind(this.data),this.L2norm(this.controlpoints)}setMaterialIndex(){this.transparent?this.setMaterial(transparentData,drawTransparent):this.color?this.setMaterial(colorData,drawColor):this.setMaterial(materialData,drawMaterial)}L2norm(e){let t=e[0];this.epsilon=0;let i=e.length;for(let a=1;a<i;++a)this.epsilon=Math.max(this.epsilon,abs2([e[a][0]-t[0],e[a][1]-t[1],e[a][2]-t[2]]));this.epsilon*=Number.EPSILON}processTriangle(e){let t=e[0],i=e[1],a=e[2],n=unit(cross([i[0]-t[0],i[1]-t[1],i[2]-t[2]],[a[0]-t[0],a[1]-t[1],a[2]-t[2]]));if(!this.offscreen([t,i,a])){let e,r,s;this.color?(e=this.data.Vertex(t,n,this.color[0]),r=this.data.Vertex(i,n,this.color[1]),s=this.data.Vertex(a,n,this.color[2])):(e=this.vertex(t,n),r=this.vertex(i,n),s=this.vertex(a,n)),0==wireframe?(this.data.indices.push(e),this.data.indices.push(r),this.data.indices.push(s)):(this.data.indices.push(e),this.data.indices.push(r),this.data.indices.push(r),this.data.indices.push(s),this.data.indices.push(s),this.data.indices.push(e)),this.append()}}processQuad(e){let t=e[0],i=e[1],a=e[2],n=e[3],r=cross([i[0]-t[0],i[1]-t[1],i[2]-t[2]],[a[0]-i[0],a[1]-i[1],a[2]-i[2]]),s=cross([a[0]-n[0],a[1]-n[1],a[2]-n[2]],[n[0]-t[0],n[1]-t[1],n[2]-t[2]]),o=unit([r[0]+s[0],r[1]+s[1],r[2]+s[2]]);if(!this.offscreen([t,i,a,n])){let e,r,s,l;this.color?(e=this.data.Vertex(t,o,this.color[0]),r=this.data.Vertex(i,o,this.color[1]),s=this.data.Vertex(a,o,this.color[2]),l=this.data.Vertex(n,o,this.color[3])):(e=this.vertex(t,o),r=this.vertex(i,o),s=this.vertex(a,o),l=this.vertex(n,o)),0==wireframe?(this.data.indices.push(e),this.data.indices.push(r),this.data.indices.push(s),this.data.indices.push(e),this.data.indices.push(s),this.data.indices.push(l)):(this.data.indices.push(e),this.data.indices.push(r),this.data.indices.push(r),this.data.indices.push(s),this.data.indices.push(s),this.data.indices.push(l),this.data.indices.push(l),this.data.indices.push(e)),this.append()}}curve(e,t,i,a,n){new BezierCurve([e[t],e[i],e[a],e[n]],0,materialIndex,this.Min,this.Max).render()}process(e){if(this.transparent&&1!=wireframe&&(materialIndex=this.color?-1-materialIndex:1+materialIndex),10==e.length)return this.process3(e);if(3==e.length)return this.processTriangle(e);if(4==e.length)return this.processQuad(e);if(1==wireframe)return this.curve(e,0,4,8,12),this.curve(e,12,13,14,15),this.curve(e,15,11,7,3),void this.curve(e,3,2,1,0);let t=e[0],i=e[3],a=e[12],n=e[15],r=this.normal(i,e[2],e[1],t,e[4],e[8],a);abs2(r)<this.epsilon&&(r=this.normal(i,e[2],e[1],t,e[13],e[14],n),abs2(r)<this.epsilon&&(r=this.normal(n,e[11],e[7],i,e[4],e[8],a)));let s=this.normal(t,e[4],e[8],a,e[13],e[14],n);abs2(s)<this.epsilon&&(s=this.normal(t,e[4],e[8],a,e[11],e[7],i),abs2(s)<this.epsilon&&(s=this.normal(i,e[2],e[1],t,e[13],e[14],n)));let o=this.normal(a,e[13],e[14],n,e[11],e[7],i);abs2(o)<this.epsilon&&(o=this.normal(a,e[13],e[14],n,e[2],e[1],t),abs2(o)<this.epsilon&&(o=this.normal(t,e[4],e[8],a,e[11],e[7],i)));let l=this.normal(n,e[11],e[7],i,e[2],e[1],t);if(abs2(l)<this.epsilon&&(l=this.normal(n,e[11],e[7],i,e[4],e[8],a),abs2(l)<this.epsilon&&(l=this.normal(a,e[13],e[14],n,e[2],e[1],t))),this.color){let h=this.color[0],c=this.color[1],d=this.color[2],m=this.color[3],f=this.data.Vertex(t,r,h),u=this.data.Vertex(a,s,c),p=this.data.Vertex(n,o,d),g=this.data.Vertex(i,l,m);this.Render(e,f,u,p,g,t,a,n,i,!1,!1,!1,!1,h,c,d,m)}else{let h=this.vertex(t,r),c=this.vertex(a,s),d=this.vertex(n,o),m=this.vertex(i,l);this.Render(e,h,c,d,m,t,a,n,i,!1,!1,!1,!1)}this.data.indices.length>0&&this.append()}append(){this.transparent?transparentData.append(this.data):this.color?colorData.append(this.data):materialData.append(this.data)}notRendered(){this.transparent?transparentData.rendered=!1:this.color?colorData.rendered=!1:materialData.rendered=!1}Render(e,t,i,a,n,r,s,o,l,h,c,d,m,f,u,p,g){let v=this.Distance(e);if(v[0]<this.res2&&v[1]<this.res2)this.offscreen([r,s,o])||(0==wireframe?(this.data.indices.push(t),this.data.indices.push(i),this.data.indices.push(a)):(this.data.indices.push(t),this.data.indices.push(i),this.data.indices.push(i),this.data.indices.push(a))),this.offscreen([r,o,l])||(0==wireframe?(this.data.indices.push(t),this.data.indices.push(a),this.data.indices.push(n)):(this.data.indices.push(a),this.data.indices.push(n),this.data.indices.push(n),this.data.indices.push(t)));else{if(this.offscreen(e))return;let x=e[0],w=e[3],M=e[12],b=e[15];if(v[0]<this.res2){let v=new Split3(x,e[1],e[2],w),T=new Split3(e[4],e[5],e[6],e[7]),S=new Split3(e[8],e[9],e[10],e[11]),R=new Split3(M,e[13],e[14],b),A=[x,v.m0,v.m3,v.m5,e[4],T.m0,T.m3,T.m5,e[8],S.m0,S.m3,S.m5,M,R.m0,R.m3,R.m5],I=[v.m5,v.m4,v.m2,w,T.m5,T.m4,T.m2,e[7],S.m5,S.m4,S.m2,e[11],R.m5,R.m4,R.m2,b],P=this.normal(A[12],A[13],A[14],A[15],A[11],A[7],A[3]);abs2(P)<=this.epsilon&&(P=this.normal(A[12],A[13],A[14],A[15],A[2],A[1],A[0]),abs2(P)<=this.epsilon&&(P=this.normal(A[0],A[4],A[8],A[12],A[11],A[7],A[3])));let E=this.normal(I[3],I[2],I[1],I[0],I[4],I[8],I[12]);abs2(E)<=this.epsilon&&(E=this.normal(I[3],I[2],I[1],I[0],I[13],I[14],I[15]),abs2(E)<=this.epsilon&&(E=this.normal(I[15],I[11],I[7],I[3],I[4],I[8],I[12])));let y=this.Epsilon,L=[.5*(s[0]+o[0]),.5*(s[1]+o[1]),.5*(s[2]+o[2])];if(!c)if(c=Straightness(M,e[13],e[14],b)<this.res2){let e=unit(this.differential(I[12],I[8],I[4],I[0]));L=[L[0]-y*e[0],L[1]-y*e[1],L[2]-y*e[2]]}else L=A[15];let D=[.5*(l[0]+r[0]),.5*(l[1]+r[1]),.5*(l[2]+r[2])];if(!m)if(m=Straightness(x,e[1],e[2],w)<this.res2){let e=unit(this.differential(A[3],A[7],A[11],A[15]));D=[D[0]-y*e[0],D[1]-y*e[1],D[2]-y*e[2]]}else D=I[0];if(f){let e=Array(4),v=Array(4);for(let t=0;t<4;++t)e[t]=.5*(u[t]+p[t]),v[t]=.5*(g[t]+f[t]);let x=this.data.Vertex(L,P,e),w=this.data.Vertex(D,E,v);this.Render(A,t,i,x,w,r,s,L,D,h,c,!1,m,f,u,e,v),this.Render(I,w,x,a,n,D,L,o,l,!1,c,d,m,v,e,p,g)}else{let e=this.vertex(L,P),f=this.vertex(D,E);this.Render(A,t,i,e,f,r,s,L,D,h,c,!1,m),this.Render(I,f,e,a,n,D,L,o,l,!1,c,d,m)}return}if(v[1]<this.res2){let v=new Split3(x,e[4],e[8],M),T=new Split3(e[1],e[5],e[9],e[13]),S=new Split3(e[2],e[6],e[10],e[14]),R=new Split3(w,e[7],e[11],b),A=[x,e[1],e[2],w,v.m0,T.m0,S.m0,R.m0,v.m3,T.m3,S.m3,R.m3,v.m5,T.m5,S.m5,R.m5],I=[v.m5,T.m5,S.m5,R.m5,v.m4,T.m4,S.m4,R.m4,v.m2,T.m2,S.m2,R.m2,M,e[13],e[14],b],P=this.normal(A[0],A[4],A[8],A[12],A[13],A[14],A[15]);abs2(P)<=this.epsilon&&(P=this.normal(A[0],A[4],A[8],A[12],A[11],A[7],A[3]),abs2(P)<=this.epsilon&&(P=this.normal(A[3],A[2],A[1],A[0],A[13],A[14],A[15])));let E=this.normal(I[15],I[11],I[7],I[3],I[2],I[1],I[0]);abs2(E)<=this.epsilon&&(E=this.normal(I[15],I[11],I[7],I[3],I[4],I[8],I[12]),abs2(E)<=this.epsilon&&(E=this.normal(I[12],I[13],I[14],I[15],I[2],I[1],I[0])));let y=this.Epsilon,L=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])];if(!h)if(h=Straightness(x,e[4],e[8],M)<this.res2){let e=unit(this.differential(I[0],I[1],I[2],I[3]));L=[L[0]-y*e[0],L[1]-y*e[1],L[2]-y*e[2]]}else L=A[12];let D=[.5*(o[0]+l[0]),.5*(o[1]+l[1]),.5*(o[2]+l[2])];if(!d)if(d=Straightness(b,e[11],e[7],w)<this.res2){let e=unit(this.differential(A[15],A[14],A[13],A[12]));D=[D[0]-y*e[0],D[1]-y*e[1],D[2]-y*e[2]]}else D=I[3];if(f){let e=Array(4),v=Array(4);for(let t=0;t<4;++t)e[t]=.5*(f[t]+u[t]),v[t]=.5*(p[t]+g[t]);let x=this.data.Vertex(L,P,e),w=this.data.Vertex(D,E,v);this.Render(A,t,x,w,n,r,L,D,l,h,!1,d,m,f,e,v,g),this.Render(I,x,i,a,w,L,s,o,D,h,c,d,!1,e,u,p,v)}else{let e=this.vertex(L,P),f=this.vertex(D,E);this.Render(A,t,e,f,n,r,L,D,l,h,!1,d,m),this.Render(I,e,i,a,f,L,s,o,D,h,c,d,!1)}return}let T=new Split3(x,e[1],e[2],w),S=new Split3(e[4],e[5],e[6],e[7]),R=new Split3(e[8],e[9],e[10],e[11]),A=new Split3(M,e[13],e[14],b),I=new Split3(x,e[4],e[8],M),P=new Split3(T.m0,S.m0,R.m0,A.m0),E=new Split3(T.m3,S.m3,R.m3,A.m3),y=new Split3(T.m5,S.m5,R.m5,A.m5),L=new Split3(T.m4,S.m4,R.m4,A.m4),D=new Split3(T.m2,S.m2,R.m2,A.m2),O=new Split3(w,e[7],e[11],b),B=[x,T.m0,T.m3,T.m5,I.m0,P.m0,E.m0,y.m0,I.m3,P.m3,E.m3,y.m3,I.m5,P.m5,E.m5,y.m5],N=[I.m5,P.m5,E.m5,y.m5,I.m4,P.m4,E.m4,y.m4,I.m2,P.m2,E.m2,y.m2,M,A.m0,A.m3,A.m5],z=[y.m5,L.m5,D.m5,O.m5,y.m4,L.m4,D.m4,O.m4,y.m2,L.m2,D.m2,O.m2,A.m5,A.m4,A.m2,b],_=[T.m5,T.m4,T.m2,w,y.m0,L.m0,D.m0,O.m0,y.m3,L.m3,D.m3,O.m3,y.m5,L.m5,D.m5,O.m5],C=B[15],V=this.normal(B[0],B[4],B[8],B[12],B[13],B[14],B[15]);abs2(V)<this.epsilon&&(V=this.normal(B[0],B[4],B[8],B[12],B[11],B[7],B[3]),abs2(V)<this.epsilon&&(V=this.normal(B[3],B[2],B[1],B[0],B[13],B[14],B[15])));let U=this.normal(N[12],N[13],N[14],N[15],N[11],N[7],N[3]);abs2(U)<this.epsilon&&(U=this.normal(N[12],N[13],N[14],N[15],N[2],N[1],N[0]),abs2(U)<this.epsilon&&(U=this.normal(N[0],N[4],N[8],N[12],N[11],N[7],N[3])));let H=this.normal(z[15],z[11],z[7],z[3],z[2],z[1],z[0]);abs2(H)<this.epsilon&&(H=this.normal(z[15],z[11],z[7],z[3],z[4],z[8],z[12]),abs2(H)<this.epsilon&&(H=this.normal(z[12],z[13],z[14],z[15],z[2],z[1],z[0])));let G=this.normal(_[3],_[2],_[1],_[0],_[4],_[8],_[12]);abs2(G)<this.epsilon&&(G=this.normal(_[3],_[2],_[1],_[0],_[13],_[14],_[15]),abs2(G)<this.epsilon&&(G=this.normal(_[15],_[11],_[7],_[3],_[4],_[8],_[12])));let F=this.normal(z[3],z[2],z[1],C,z[4],z[8],z[12]),W=this.Epsilon,X=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])];if(!h)if(h=Straightness(x,e[4],e[8],M)<this.res2){let e=unit(this.differential(N[0],N[1],N[2],N[3]));X=[X[0]-W*e[0],X[1]-W*e[1],X[2]-W*e[2]]}else X=B[12];let j=[.5*(s[0]+o[0]),.5*(s[1]+o[1]),.5*(s[2]+o[2])];if(!c)if(c=Straightness(M,e[13],e[14],b)<this.res2){let e=unit(this.differential(z[12],z[8],z[4],z[0]));j=[j[0]-W*e[0],j[1]-W*e[1],j[2]-W*e[2]]}else j=N[15];let Z=[.5*(o[0]+l[0]),.5*(o[1]+l[1]),.5*(o[2]+l[2])];if(!d)if(d=Straightness(b,e[11],e[7],w)<this.res2){let e=unit(this.differential(_[15],_[14],_[13],_[12]));Z=[Z[0]-W*e[0],Z[1]-W*e[1],Z[2]-W*e[2]]}else Z=z[3];let k=[.5*(l[0]+r[0]),.5*(l[1]+r[1]),.5*(l[2]+r[2])];if(!m)if(m=Straightness(x,e[1],e[2],w)<this.res2){let e=unit(this.differential(B[3],B[7],B[11],B[15]));k=[k[0]-W*e[0],k[1]-W*e[1],k[2]-W*e[2]]}else k=_[0];if(f){let e=Array(4),v=Array(4),x=Array(4),w=Array(4),M=Array(4);for(let t=0;t<4;++t)e[t]=.5*(f[t]+u[t]),v[t]=.5*(u[t]+p[t]),x[t]=.5*(p[t]+g[t]),w[t]=.5*(g[t]+f[t]),M[t]=.5*(e[t]+x[t]);let b=this.data.Vertex(X,V,e),T=this.data.Vertex(j,U,v),S=this.data.Vertex(Z,H,x),R=this.data.Vertex(k,G,w),A=this.data.Vertex(C,F,M);this.Render(B,t,b,A,R,r,X,C,k,h,!1,!1,m,f,e,M,w),this.Render(N,b,i,T,A,X,s,j,C,h,c,!1,!1,e,u,v,M),this.Render(z,A,T,a,S,C,j,o,Z,!1,c,d,!1,M,v,p,x),this.Render(_,R,A,S,n,k,C,Z,l,!1,!1,d,m,w,M,x,g)}else{let e=this.vertex(X,V),f=this.vertex(j,U),u=this.vertex(Z,H),p=this.vertex(k,G),g=this.vertex(C,F);this.Render(B,t,e,g,p,r,X,C,k,h,!1,!1,m),this.Render(N,e,i,f,g,X,s,j,C,h,c,!1,!1),this.Render(z,g,f,a,u,C,j,o,Z,!1,c,d,!1),this.Render(_,p,g,u,n,k,C,Z,l,!1,!1,d,m)}}}process3(e){if(1==wireframe)return this.curve(e,0,1,3,6),this.curve(e,6,7,8,9),void this.curve(e,9,5,2,0);let t=e[0],i=e[6],a=e[9],n=this.normal(a,e[5],e[2],t,e[1],e[3],i),r=this.normal(t,e[1],e[3],i,e[7],e[8],a),s=this.normal(i,e[7],e[8],a,e[5],e[2],t);if(this.color){let o=this.color[0],l=this.color[1],h=this.color[2],c=this.data.Vertex(t,n,o),d=this.data.Vertex(i,r,l),m=this.data.Vertex(a,s,h);this.Render3(e,c,d,m,t,i,a,!1,!1,!1,o,l,h)}else{let o=this.vertex(t,n),l=this.vertex(i,r),h=this.vertex(a,s);this.Render3(e,o,l,h,t,i,a,!1,!1,!1)}this.data.indices.length>0&&this.append()}Render3(e,t,i,a,n,r,s,o,l,h,c,d,m){if(this.Distance3(e)<this.res2)this.offscreen([n,r,s])||(0==wireframe?(this.data.indices.push(t),this.data.indices.push(i),this.data.indices.push(a)):(this.data.indices.push(t),this.data.indices.push(i),this.data.indices.push(i),this.data.indices.push(a),this.data.indices.push(a),this.data.indices.push(t)));else{if(this.offscreen(e))return;let f=e[0],u=e[1],p=e[2],g=e[3],v=e[4],x=e[5],w=e[6],M=e[7],b=e[8],T=e[9],S=[.5*(T[0]+x[0]),.5*(T[1]+x[1]),.5*(T[2]+x[2])],R=[.5*(T[0]+b[0]),.5*(T[1]+b[1]),.5*(T[2]+b[2])],A=[.5*(x[0]+p[0]),.5*(x[1]+p[1]),.5*(x[2]+p[2])],I=[.5*(b[0]+v[0]),.5*(b[1]+v[1]),.5*(b[2]+v[2])],P=[.5*(b[0]+M[0]),.5*(b[1]+M[1]),.5*(b[2]+M[2])],E=[.5*(p[0]+v[0]),.5*(p[1]+v[1]),.5*(p[2]+v[2])],y=[.5*(p[0]+f[0]),.5*(p[1]+f[1]),.5*(p[2]+f[2])],L=[.5*(v[0]+g[0]),.5*(v[1]+g[1]),.5*(v[2]+g[2])],D=[.5*(M[0]+w[0]),.5*(M[1]+w[1]),.5*(M[2]+w[2])],O=[.5*(f[0]+u[0]),.5*(f[1]+u[1]),.5*(f[2]+u[2])],B=[.5*(u[0]+g[0]),.5*(u[1]+g[1]),.5*(u[2]+g[2])],N=[.5*(g[0]+w[0]),.5*(g[1]+w[1]),.5*(g[2]+w[2])],z=[.5*(S[0]+A[0]),.5*(S[1]+A[1]),.5*(S[2]+A[2])],_=[.5*(R[0]+P[0]),.5*(R[1]+P[1]),.5*(R[2]+P[2])],C=[.5*(A[0]+y[0]),.5*(A[1]+y[1]),.5*(A[2]+y[2])],V=[.5*I[0]+.25*(v[0]+u[0]),.5*I[1]+.25*(v[1]+u[1]),.5*I[2]+.25*(v[2]+u[2])],U=[.5*(P[0]+D[0]),.5*(P[1]+D[1]),.5*(P[2]+D[2])],H=[.5*E[0]+.25*(v[0]+M[0]),.5*E[1]+.25*(v[1]+M[1]),.5*E[2]+.25*(v[2]+M[2])],G=[.25*(x[0]+v[0])+.5*L[0],.25*(x[1]+v[1])+.5*L[1],.25*(x[2]+v[2])+.5*L[2]],F=[.5*(O[0]+B[0]),.5*(O[1]+B[1]),.5*(O[2]+B[2])],W=[.5*(B[0]+N[0]),.5*(B[1]+N[1]),.5*(B[2]+N[2])],X=[.5*(H[0]+F[0]),.5*(H[1]+F[1]),.5*(H[2]+F[2])],j=[.5*(H[0]+W[0]),.5*(H[1]+W[1]),.5*(H[2]+W[2])],Z=[.5*(F[0]+W[0]),.5*(F[1]+W[1]),.5*(F[2]+W[2])],k=[.5*(G[0]+U[0]),.5*(G[1]+U[1]),.5*(G[2]+U[2])],Y=[.5*(_[0]+G[0]),.5*(_[1]+G[1]),.5*(_[2]+G[2])],q=[.5*(_[0]+U[0]),.5*(_[1]+U[1]),.5*(_[2]+U[2])],$=[.5*(z[0]+V[0]),.5*(z[1]+V[1]),.5*(z[2]+V[2])],K=[.5*(C[0]+V[0]),.5*(C[1]+V[1]),.5*(C[2]+V[2])],Q=[.5*(z[0]+C[0]),.5*(z[1]+C[1]),.5*(z[2]+C[2])],J=[f,O,y,F,[.5*(E[0]+O[0]),.5*(E[1]+O[1]),.5*(E[2]+O[2])],C,Z,X,K,Q],ee=[Z,W,j,N,[.5*(L[0]+D[0]),.5*(L[1]+D[1]),.5*(L[2]+D[2])],k,w,D,U,q],te=[Q,$,z,Y,[.5*(S[0]+I[0]),.5*(S[1]+I[1]),.5*(S[2]+I[2])],S,q,_,R,T],ie=[q,Y,k,$,[.25*(A[0]+P[0]+B[0]+v[0]),.25*(A[1]+P[1]+B[1]+v[1]),.25*(A[2]+P[2]+B[2]+v[2])],j,Q,K,X,Z],ae=this.normal(Z,j,k,q,Y,$,Q),ne=this.normal(q,Y,$,Q,K,X,Z),re=this.normal(Q,K,X,Z,j,k,q),se=this.Epsilon,oe=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])];if(!o)if(o=Straightness(w,M,b,T)<this.res2){let e=unit(this.sumdifferential(ie[0],ie[2],ie[5],ie[9],ie[1],ie[3],ie[6]));oe=[oe[0]-se*e[0],oe[1]-se*e[1],oe[2]-se*e[2]]}else oe=q;let le=[.5*(s[0]+n[0]),.5*(s[1]+n[1]),.5*(s[2]+n[2])];if(!l)if(l=Straightness(f,p,x,T)<this.res2){let e=unit(this.sumdifferential(ie[6],ie[3],ie[1],ie[0],ie[7],ie[8],ie[9]));le=[le[0]-se*e[0],le[1]-se*e[1],le[2]-se*e[2]]}else le=Q;let he=[.5*(n[0]+r[0]),.5*(n[1]+r[1]),.5*(n[2]+r[2])];if(!h)if(h=Straightness(f,u,g,w)<this.res2){let e=unit(this.sumdifferential(ie[9],ie[8],ie[7],ie[6],ie[5],ie[2],ie[0]));he=[he[0]-se*e[0],he[1]-se*e[1],he[2]-se*e[2]]}else he=Z;if(c){let e=Array(4),f=Array(4),u=Array(4);for(let t=0;t<4;++t)e[t]=.5*(d[t]+m[t]),f[t]=.5*(m[t]+c[t]),u[t]=.5*(c[t]+d[t]);let p=this.data.Vertex(oe,ae,e),g=this.data.Vertex(le,ne,f),v=this.data.Vertex(he,re,u);this.Render3(J,t,v,g,n,he,le,!1,l,h,c,u,f),this.Render3(ee,v,i,p,he,r,oe,o,!1,h,u,d,e),this.Render3(te,g,p,a,le,oe,s,o,l,!1,f,e,m),this.Render3(ie,p,g,v,oe,le,he,!1,!1,!1,e,f,u)}else{let e=this.vertex(oe,ae),c=this.vertex(le,ne),d=this.vertex(he,re);this.Render3(J,t,d,c,n,he,le,!1,l,h),this.Render3(ee,d,i,e,he,r,oe,o,!1,h),this.Render3(te,c,e,a,le,oe,s,o,l,!1),this.Render3(ie,e,c,d,oe,le,he,!1,!1,!1)}}}Distance(e){let t=e[0],i=e[3],a=e[12],n=e[15],r=Flatness(t,a,i,n);r=Math.max(Straightness(t,e[4],e[8],a)),r=Math.max(r,Straightness(e[1],e[5],e[9],e[13])),r=Math.max(r,Straightness(i,e[7],e[11],n)),r=Math.max(r,Straightness(e[2],e[6],e[10],e[14]));let s=Flatness(t,i,a,n);return s=Math.max(s,Straightness(t,e[1],e[2],i)),s=Math.max(s,Straightness(e[4],e[5],e[6],e[7])),s=Math.max(s,Straightness(e[8],e[9],e[10],e[11])),s=Math.max(s,Straightness(a,e[13],e[14],n)),[r,s]}Distance3(e){let t=e[0],i=e[4],a=e[6],n=e[9],r=abs2([(t[0]+a[0]+n[0])*(1/3)-i[0],(t[1]+a[1]+n[1])*(1/3)-i[1],(t[2]+a[2]+n[2])*(1/3)-i[2]]);return r=Math.max(r,Straightness(t,e[1],e[3],a)),r=Math.max(r,Straightness(t,e[2],e[5],n)),Math.max(r,Straightness(a,e[7],e[8],n))}differential(e,t,i,a){let n=[3*(t[0]-e[0]),3*(t[1]-e[1]),3*(t[2]-e[2])];return abs2(n)>this.epsilon?n:(n=bezierPP(e,t,i),abs2(n)>this.epsilon?n:bezierPPP(e,t,i,a))}sumdifferential(e,t,i,a,n,r,s){let o=this.differential(e,t,i,a),l=this.differential(e,n,r,s);return[o[0]+l[0],o[1]+l[1],o[2]+l[2]]}normal(e,t,i,a,n,r,s){let o=3*(n[0]-a[0]),l=3*(n[1]-a[1]),h=3*(n[2]-a[2]),c=3*(i[0]-a[0]),d=3*(i[1]-a[1]),m=3*(i[2]-a[2]),f=[l*m-h*d,h*c-o*m,o*d-l*c];if(abs2(f)>this.epsilon)return f;let u=[c,d,m],p=[o,l,h],g=bezierPP(a,i,t),v=bezierPP(a,n,r),x=cross(v,u),w=cross(p,g);if(f=[x[0]+w[0],x[1]+w[1],x[2]+w[2]],abs2(f)>this.epsilon)return f;let M=bezierPPP(a,i,t,e),b=bezierPPP(a,n,r,s);x=cross(p,M),w=cross(b,u);let T=cross(v,g);return f=[x[0]+w[0]+T[0],x[1]+w[1]+T[1],x[2]+w[2]+T[2]],abs2(f)>this.epsilon?f:(x=cross(b,g),w=cross(v,M),f=[x[0]+w[0],x[1]+w[1],x[2]+w[2]],abs2(f)>this.epsilon?f:cross(b,M))}}class BezierCurve extends Geometry{constructor(e,t,i,a,n){super(),this.controlpoints=e,this.CenterIndex=t,this.MaterialIndex=i,this.Min=a,this.Max=n}setMaterialIndex(){this.setMaterial(material1Data,drawMaterial1)}processLine(e){let t=e[0],i=e[1];if(!this.offscreen([t,i])){let e=[0,0,1];this.data.indices.push(this.data.vertex(t,e)),this.data.indices.push(this.data.vertex(i,e)),this.append()}}process(e){if(2==e.length)return this.processLine(e);let t=e[0],i=e[1],a=e[2],n=e[3],r=this.normal(bezierP(t,i),bezierPP(t,i,a)),s=this.normal(bezierP(a,n),bezierPP(n,a,i)),o=this.data.vertex(t,r),l=this.data.vertex(n,s);this.Render(e,o,l),this.data.indices.length>0&&this.append()}append(){material1Data.append(this.data)}notRendered(){material1Data.rendered=!1}Render(e,t,i){let a=e[0],n=e[1],r=e[2],s=e[3];if(Straightness(a,n,r,s)<this.res2)this.offscreen([a,s])||(this.data.indices.push(t),this.data.indices.push(i));else{if(this.offscreen(e))return;let o=[.5*(a[0]+n[0]),.5*(a[1]+n[1]),.5*(a[2]+n[2])],l=[.5*(n[0]+r[0]),.5*(n[1]+r[1]),.5*(n[2]+r[2])],h=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])],c=[.5*(o[0]+l[0]),.5*(o[1]+l[1]),.5*(o[2]+l[2])],d=[.5*(l[0]+h[0]),.5*(l[1]+h[1]),.5*(l[2]+h[2])],m=[.5*(c[0]+d[0]),.5*(c[1]+d[1]),.5*(c[2]+d[2])],f=[a,o,c,m],u=[m,d,h,s],p=this.normal(bezierPh(a,n,r,s),bezierPPh(a,n,r,s)),g=this.data.vertex(m,p);this.Render(f,t,g),this.Render(u,g,i)}}normal(e,t){let i=dot(e,e),a=dot(e,t);return[i*t[0]-a*e[0],i*t[1]-a*e[1],i*t[2]-a*e[2]]}}class Pixel extends Geometry{constructor(e,t,i,a,n){super(),this.controlpoint=e,this.width=t,this.CenterIndex=0,this.MaterialIndex=i,this.Min=a,this.Max=n}setMaterialIndex(){this.setMaterial(material0Data,drawMaterial0)}process(e){this.data.indices.push(this.data.vertex0(this.controlpoint,this.width)),this.append()}append(){material0Data.append(this.data)}notRendered(){material0Data.rendered=!1}}class Triangles extends Geometry{constructor(e,t,i,a){super(),this.CenterIndex=e,this.MaterialIndex=t,this.Min=i,this.Max=a,this.controlpoints=Positions,this.Normals=Normals,this.Colors=Colors,this.Indices=Indices,Positions=[],Normals=[],Colors=[],Indices=[],this.transparent=Materials[this.MaterialIndex].diffuse[3]<1}setMaterialIndex(){this.transparent?this.setMaterial(transparentData,drawTransparent):this.setMaterial(triangleData,drawTriangle)}process(e){this.data.vertices=new Array(6*e.length),materialIndex=this.Colors.length>0?-1-materialIndex:1+materialIndex;for(let t=0,i=this.Indices.length;t<i;++t){let i=this.Indices[t],a=i[0],n=e[a[0]],r=e[a[1]],s=e[a[2]];if(!this.offscreen([n,r,s])){let e=i.length>1?i[1]:a;if(e&&0!=e.length||(e=a),this.Colors.length>0){let t=i.length>2?i[2]:a;t&&0!=t.length||(t=a);let o=this.Colors[t[0]],l=this.Colors[t[1]],h=this.Colors[t[2]];this.transparent|=o[3]+l[3]+h[3]<765,0==wireframe?(this.data.iVertex(a[0],n,this.Normals[e[0]],o),this.data.iVertex(a[1],r,this.Normals[e[1]],l),this.data.iVertex(a[2],s,this.Normals[e[2]],h)):(this.data.iVertex(a[0],n,this.Normals[e[0]],o),this.data.iVertex(a[1],r,this.Normals[e[1]],l),this.data.iVertex(a[1],r,this.Normals[e[1]],l),this.data.iVertex(a[2],s,this.Normals[e[2]],h),this.data.iVertex(a[2],s,this.Normals[e[2]],h),this.data.iVertex(a[0],n,this.Normals[e[0]],o))}else 0==wireframe?(this.data.iVertex(a[0],n,this.Normals[e[0]]),this.data.iVertex(a[1],r,this.Normals[e[1]]),this.data.iVertex(a[2],s,this.Normals[e[2]])):(this.data.iVertex(a[0],n,this.Normals[e[0]]),this.data.iVertex(a[1],r,this.Normals[e[1]]),this.data.iVertex(a[1],r,this.Normals[e[1]]),this.data.iVertex(a[2],s,this.Normals[e[2]]),this.data.iVertex(a[2],s,this.Normals[e[2]]),this.data.iVertex(a[0],n,this.Normals[e[0]]))}}this.data.nvertices=e.length,this.data.indices.length>0&&this.append()}append(){this.transparent?transparentData.append(this.data):triangleData.append(this.data)}notRendered(){this.transparent?transparentData.rendered=!1:triangleData.rendered=!1}}function redrawScene(){initProjection(),setProjection(),remesh=!0,drawScene()}function home(){mat4.identity(rotMat),redrawScene(),window.top.asyWebApplication&&window.top.asyWebApplication.setProjection(""),window.parent.asyProjection=!1}let positionAttribute=0,normalAttribute=1,materialAttribute=2,colorAttribute=3,widthAttribute=4;function initShader(e=[]){let t=getShader(gl,vertex,gl.VERTEX_SHADER,e),i=getShader(gl,fragment,gl.FRAGMENT_SHADER,e),a=gl.createProgram();return gl.attachShader(a,t),gl.attachShader(a,i),gl.bindAttribLocation(a,positionAttribute,"position"),gl.bindAttribLocation(a,normalAttribute,"normal"),gl.bindAttribLocation(a,materialAttribute,"materialIndex"),gl.bindAttribLocation(a,colorAttribute,"color"),gl.bindAttribLocation(a,widthAttribute,"width"),gl.linkProgram(a),gl.getProgramParameter(a,gl.LINK_STATUS)||alert("Could not initialize shaders"),a}class Split3{constructor(e,t,i,a){this.m0=[.5*(e[0]+t[0]),.5*(e[1]+t[1]),.5*(e[2]+t[2])];let n=.5*(t[0]+i[0]),r=.5*(t[1]+i[1]),s=.5*(t[2]+i[2]);this.m2=[.5*(i[0]+a[0]),.5*(i[1]+a[1]),.5*(i[2]+a[2])],this.m3=[.5*(this.m0[0]+n),.5*(this.m0[1]+r),.5*(this.m0[2]+s)],this.m4=[.5*(n+this.m2[0]),.5*(r+this.m2[1]),.5*(s+this.m2[2])],this.m5=[.5*(this.m3[0]+this.m4[0]),.5*(this.m3[1]+this.m4[1]),.5*(this.m3[2]+this.m4[2])]}}function unit(e){let t=1/(Math.sqrt(e[0]*e[0]+e[1]*e[1]+e[2]*e[2])||1);return[e[0]*t,e[1]*t,e[2]*t]}function abs2(e){return e[0]*e[0]+e[1]*e[1]+e[2]*e[2]}function dot(e,t){return e[0]*t[0]+e[1]*t[1]+e[2]*t[2]}function cross(e,t){return[e[1]*t[2]-e[2]*t[1],e[2]*t[0]-e[0]*t[2],e[0]*t[1]-e[1]*t[0]]}function bezierP(e,t){return[t[0]-e[0],t[1]-e[1],t[2]-e[2]]}function bezierPP(e,t,i){return[3*(e[0]+i[0])-6*t[0],3*(e[1]+i[1])-6*t[1],3*(e[2]+i[2])-6*t[2]]}function bezierPPP(e,t,i,a){return[a[0]-e[0]+3*(t[0]-i[0]),a[1]-e[1]+3*(t[1]-i[1]),a[2]-e[2]+3*(t[2]-i[2])]}function bezierPh(e,t,i,a){return[i[0]+a[0]-e[0]-t[0],i[1]+a[1]-e[1]-t[1],i[2]+a[2]-e[2]-t[2]]}function bezierPPh(e,t,i,a){return[3*e[0]-5*t[0]+i[0]+a[0],3*e[1]-5*t[1]+i[1]+a[1],3*e[2]-5*t[2]+i[2]+a[2]]}function Straightness(e,t,i,a){let n=[1/3*(a[0]-e[0]),1/3*(a[1]-e[1]),1/3*(a[2]-e[2])];return Math.max(abs2([t[0]-n[0]-e[0],t[1]-n[1]-e[1],t[2]-n[2]-e[2]]),abs2([a[0]-n[0]-i[0],a[1]-n[1]-i[1],a[2]-n[2]-i[2]]))}function Flatness(e,t,i,a){let n=[t[0]-e[0],t[1]-e[1],t[2]-e[2]],r=[a[0]-i[0],a[1]-i[1],a[2]-i[2]];return Math.max(abs2(cross(n,unit(r))),abs2(cross(r,unit(n))))/9}function corners(e,t){return[e,[e[0],e[1],t[2]],[e[0],t[1],e[2]],[e[0],t[1],t[2]],[t[0],e[1],e[2]],[t[0],e[1],t[2]],[t[0],t[1],e[2]],t]}function minbound(e){return[Math.min(e[0][0],e[1][0],e[2][0],e[3][0],e[4][0],e[5][0],e[6][0],e[7][0]),Math.min(e[0][1],e[1][1],e[2][1],e[3][1],e[4][1],e[5][1],e[6][1],e[7][1]),Math.min(e[0][2],e[1][2],e[2][2],e[3][2],e[4][2],e[5][2],e[6][2],e[7][2])]}function maxbound(e){return[Math.max(e[0][0],e[1][0],e[2][0],e[3][0],e[4][0],e[5][0],e[6][0],e[7][0]),Math.max(e[0][1],e[1][1],e[2][1],e[3][1],e[4][1],e[5][1],e[6][1],e[7][1]),Math.max(e[0][2],e[1][2],e[2][2],e[3][2],e[4][2],e[5][2],e[6][2],e[7][2])]}function COBTarget(e,t){mat4.fromTranslation(Temp,[center.x,center.y,center.z]),mat4.invert(cjMatInv,Temp),mat4.multiply(e,t,cjMatInv),mat4.multiply(e,Temp,e)}function setUniforms(e,t){let i=t==pixelShader;gl.useProgram(t),gl.enableVertexAttribArray(positionAttribute),i&&gl.enableVertexAttribArray(widthAttribute);let a=!i&&Lights.length>0;if(a&&gl.enableVertexAttribArray(normalAttribute),gl.enableVertexAttribArray(materialAttribute),t.projViewMatUniform=gl.getUniformLocation(t,"projViewMat"),t.viewMatUniform=gl.getUniformLocation(t,"viewMat"),t.normMatUniform=gl.getUniformLocation(t,"normMat"),t!=colorShader&&t!=transparentShader||gl.enableVertexAttribArray(colorAttribute),a)for(let e=0;e<Lights.length;++e)Lights[e].setUniform(t,e);for(let i=0;i<e.materials.length;++i)e.materials[i].setUniform(t,i);gl.uniformMatrix4fv(t.projViewMatUniform,!1,projViewMat),gl.uniformMatrix4fv(t.viewMatUniform,!1,viewMat),gl.uniformMatrix3fv(t.normMatUniform,!1,normMat)}function handleMouseDown(e){zoomEnabled||enableZoom(),mouseDownOrTouchActive=!0,lastMouseX=e.clientX,lastMouseY=e.clientY}let pinchStart,touchStartTime,pinch=!1;function pinchDistance(e){return Math.hypot(e[0].pageX-e[1].pageX,e[0].pageY-e[1].pageY)}function handleTouchStart(e){e.preventDefault(),zoomEnabled||enableZoom();let t=e.targetTouches;swipe=rotate=pinch=!1,zooming||(1!=t.length||mouseDownOrTouchActive||(touchStartTime=(new Date).getTime(),touchId=t[0].identifier,lastMouseX=t[0].pageX,lastMouseY=t[0].pageY),2!=t.length||mouseDownOrTouchActive||(touchId=t[0].identifier,pinchStart=pinchDistance(t),pinch=!0))}function handleMouseUpOrTouchEnd(e){mouseDownOrTouchActive=!1}function rotateScene(e,t,i,a,n){if(e==i&&t==a)return;let[r,s]=arcball([e,-t],[i,-a]);mat4.fromRotation(Temp,2*n*ArcballFactor*r/Zoom,s),mat4.multiply(rotMat,Temp,rotMat)}function shiftScene(e,t,i,a){let n=1/Zoom;shift.x+=(i-e)*n*halfCanvasWidth,shift.y-=(a-t)*n*halfCanvasHeight}function panScene(e,t,i,a){orthographic?shiftScene(e,t,i,a):(center.x+=(i-e)*(viewParam.xmax-viewParam.xmin),center.y-=(a-t)*(viewParam.ymax-viewParam.ymin))}function updateViewMatrix(){COBTarget(viewMat,rotMat),mat4.translate(viewMat,viewMat,[center.x,center.y,0]),mat3.fromMat4(viewMat3,viewMat),mat3.invert(normMat,viewMat3),mat4.multiply(projViewMat,projMat,viewMat)}function capzoom(){let e=Math.sqrt(Number.MAX_VALUE),t=1/e;Zoom<=t&&(Zoom=t),Zoom>=e&&(Zoom=e),(1.5*Zoom<lastZoom||Zoom>1.5*lastZoom)&&(remesh=!0,lastZoom=Zoom)}function zoomImage(e){let t=zoomStep*halfCanvasHeight*e;const i=Math.log(.1*Number.MAX_VALUE)/Math.log(zoomFactor);Math.abs(t)<i&&(Zoom*=zoomFactor**t,capzoom())}function normMouse(e){let t=e[0],i=e[1],a=Math.hypot(t,i);return a>1&&(denom=1/a,t*=denom,i*=denom),[t,i,Math.sqrt(Math.max(1-i*i-t*t,0))]}function arcball(e,t){let i=normMouse(e),a=normMouse(t),n=dot(i,a);return[n>1?0:n<-1?pi:Math.acos(n),unit(cross(i,a))]}function zoomScene(e,t,i,a){zoomImage(t-a)}const DRAGMODE_ROTATE=1,DRAGMODE_SHIFT=2,DRAGMODE_ZOOM=3,DRAGMODE_PAN=4;function processDrag(e,t,i,a=1){let n;switch(i){case 1:n=rotateScene;break;case 2:n=shiftScene;break;case 3:n=zoomScene;break;case 4:n=panScene;break;default:n=(e,t,i,a)=>{}}n((lastMouseX-halfCanvasWidth)/halfCanvasWidth,(lastMouseY-halfCanvasHeight)/halfCanvasHeight,(e-halfCanvasWidth)/halfCanvasWidth,(t-halfCanvasHeight)/halfCanvasHeight,a),lastMouseX=e,lastMouseY=t,setProjection(),drawScene()}let zoomEnabled=0;function enableZoom(){zoomEnabled=1,canvas.addEventListener("wheel",handleMouseWheel,!1)}function disableZoom(){zoomEnabled=0,canvas.removeEventListener("wheel",handleMouseWheel,!1)}function Camera(){let e=Array(3),t=Array(3),i=Array(3),a=center.x,n=center.y,r=.5*(viewParam.zmin+viewParam.zmax);for(let s=0;s<3;++s){let o=0,l=0,h=0,c=4*s;for(let e=0;e<4;++e){let t=4*e,i=rotMat[t],s=rotMat[t+1],d=rotMat[t+2],m=rotMat[t+3],f=Transform[c+e];o+=f*(m-a*i-n*s-r*d),h+=f*s,l+=f*(m-a*i-n*s)}e[s]=o,t[s]=h,i[s]=l}return[e,t,i]}function projection(){if(null==Transform)return"";let e,t,i;[e,t,i]=Camera();let a=orthographic?" orthographic(":" perspective(",n="".padStart(a.length),r="currentprojection=\n"+a+"camera=("+e+"),\n"+n+"up=("+t+"),\n"+n+"target=("+i+"),\n"+n+"zoom="+Zoom*initialZoom/zoom0;return orthographic||(r+=",\n"+n+"angle="+2*Math.atan(Math.tan(.5*angleOfView)/Zoom)/radians),0==xshift&&0==yshift||(r+=",\n"+n+"viewportshift=("+xshift+","+yshift+")"),orthographic||(r+=",\n"+n+"autoadjust=false"),r+=");\n",window.parent.asyProjection=!0,r}function handleKey(e){if(zoomEnabled||enableZoom(),embedded&&zoomEnabled&&27==e.keyCode)return void disableZoom();let t=[];switch(e.key){case"x":t=[1,0,0];break;case"y":t=[0,1,0];break;case"z":t=[0,0,1];break;case"h":home();break;case"m":++wireframe,3==wireframe&&(wireframe=0),2!=wireframe&&(embedded||deleteShaders(),initShaders(ibl)),remesh=!0,drawScene();break;case"+":case"=":case">":expand();break;case"-":case"_":case"<":shrink();break;case"c":showCamera()}t.length>0&&(mat4.rotate(rotMat,rotMat,.1,t),updateViewMatrix(),drawScene())}function setZoom(){capzoom(),setProjection(),drawScene()}function handleMouseWheel(e){e.preventDefault(),e.deltaY<0?Zoom*=zoomFactor:Zoom/=zoomFactor,setZoom()}function handleMouseMove(e){if(!mouseDownOrTouchActive)return;let t,i=e.clientX,a=e.clientY;t=e.getModifierState("Control")?2:e.getModifierState("Shift")?3:e.getModifierState("Alt")?4:1,processDrag(i,a,t)}let zooming=!1,swipe=!1,rotate=!1;function handleTouchMove(e){if(e.preventDefault(),zooming)return;let t=e.targetTouches;if(!pinch&&1==t.length&&touchId==t[0].identifier){let e=t[0].pageX,i=t[0].pageY,a=e-lastMouseX,n=i-lastMouseY,r=a*a+n*n<=shiftHoldDistance*shiftHoldDistance;if(r&&!swipe&&!rotate&&(new Date).getTime()-touchStartTime>shiftWaitTime&&(navigator.vibrate&&window.navigator.vibrate(vibrateTime),swipe=!0),swipe)processDrag(e,i,2);else if(!r){rotate=!0,processDrag(t[0].pageX,t[0].pageY,1,.5)}}if(pinch&&!swipe&&2==t.length&&touchId==t[0].identifier){let e=pinchDistance(t),i=e-pinchStart;zooming=!0,i*=zoomPinchFactor,i>zoomPinchCap&&(i=zoomPinchCap),i<-zoomPinchCap&&(i=-zoomPinchCap),zoomImage(i/size2),pinchStart=e,swipe=rotate=zooming=!1,setProjection(),drawScene()}}let pixelShader,materialShader,colorShader,transparentShader,zbuffer=[];function transformVertices(e){let t=viewMat[2],i=viewMat[6],a=viewMat[10];zbuffer.length=e.length;for(let n=0;n<e.length;++n){let r=6*n;zbuffer[n]=t*e[r]+i*e[r+1]+a*e[r+2]}}function drawMaterial0(){drawBuffer(material0Data,pixelShader),material0Data.clear()}function drawMaterial1(){drawBuffer(material1Data,materialShader),material1Data.clear()}function drawMaterial(){drawBuffer(materialData,materialShader),materialData.clear()}function drawColor(){drawBuffer(colorData,colorShader),colorData.clear()}function drawTriangle(){drawBuffer(triangleData,transparentShader),triangleData.rendered=!1,triangleData.clear()}function drawTransparent(){let e=transparentData.indices;if(wireframe>0)return drawBuffer(transparentData,transparentShader,e),void transparentData.clear();if(e.length>0){transformVertices(transparentData.vertices);let t=e.length/3,i=Array(t).fill().map((e,t)=>t);i.sort((function(t,i){let a=3*t;Ia=e[a],Ib=e[a+1],Ic=e[a+2];let n=3*i;return IA=e[n],IB=e[n+1],IC=e[n+2],zbuffer[Ia]+zbuffer[Ib]+zbuffer[Ic]<zbuffer[IA]+zbuffer[IB]+zbuffer[IC]?-1:1}));let a=Array(e.length);for(let n=0;n<t;++n){let t=3*i[n];a[3*n]=e[t],a[3*n+1]=e[t+1],a[3*n+2]=e[t+2]}gl.depthMask(!1),drawBuffer(transparentData,transparentShader,a),transparentData.rendered=!1,gl.depthMask(!0)}transparentData.clear()}function drawBuffers(){drawMaterial0(),drawMaterial1(),drawMaterial(),drawColor(),drawTriangle(),drawTransparent(),requestAnimationFrame(drawBuffers)}function drawScene(){embedded&&(offscreen.width=canvasWidth,offscreen.height=canvasHeight,setViewport()),gl.clearColor(Background[0],Background[1],Background[2],Background[3]),gl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER_BIT);for(let e=0;e<P.length;++e)P[e].render();drawBuffers(),embedded&&(context.clearRect(0,0,canvasWidth,canvasHeight),context.drawImage(offscreen,0,0)),0==wireframe&&(remesh=!1)}function setDimensions(e,t,i,a){let n=e/t;xshift=(i/e+viewportShift[0])*Zoom,yshift=(a/t+viewportShift[1])*Zoom;let r=1/Zoom;if(orthographic){let e=maxBound[0]-minBound[0],t=maxBound[1]-minBound[1];if(e<t*n){let e=.5*t*n*r,i=2*e*xshift,a=t*r*yshift;viewParam.xmin=-e-i,viewParam.xmax=e-i,viewParam.ymin=minBound[1]*r-a,viewParam.ymax=maxBound[1]*r-a}else{let t=.5*e*r/n,i=e*r*xshift,a=2*t*yshift;viewParam.xmin=minBound[0]*r-i,viewParam.xmax=maxBound[0]*r-i,viewParam.ymin=-t-a,viewParam.ymax=t-a}}else{let e=H*r,t=e*n,i=2*t*xshift,a=2*e*yshift;viewParam.xmin=-t-i,viewParam.xmax=t-i,viewParam.ymin=-e-a,viewParam.ymax=e-a}}function setProjection(){setDimensions(canvasWidth,canvasHeight,shift.x,shift.y),(orthographic?mat4.ortho:mat4.frustum)(projMat,viewParam.xmin,viewParam.xmax,viewParam.ymin,viewParam.ymax,-viewParam.zmax,-viewParam.zmin),updateViewMatrix(),window.top.asyWebApplication&&window.top.asyWebApplication.setProjection(projection())}function showCamera(){window.top.asyWebApplication||prompt("Ctrl+c Enter to copy currentprojection to clipboard; then append to asy file:",projection())}function initProjection(){H=-Math.tan(.5*angleOfView)*maxBound[2],center.x=center.y=0,center.z=.5*(minBound[2]+maxBound[2]),lastZoom=Zoom=zoom0,viewParam.zmin=minBound[2],viewParam.zmax=maxBound[2],shift.x=shift.y=0}function setViewport(){gl.viewportWidth=canvasWidth,gl.viewportHeight=canvasHeight,gl.viewport(.5*(canvas.width-canvasWidth),.5*(canvas.height-canvasHeight),canvasWidth,canvasHeight),gl.scissor(0,0,canvas.width,canvas.height)}function setCanvas(){embedded&&(canvas.width=offscreen.width=canvasWidth,canvas.height=offscreen.height=canvasHeight),size2=Math.hypot(canvasWidth,canvasHeight),halfCanvasWidth=.5*canvas.width,halfCanvasHeight=.5*canvas.height,ArcballFactor=1+8*Math.hypot(viewportMargin[0],viewportMargin[1])/size2}function setsize(e,t){e>maxViewportWidth&&(e=maxViewportWidth),t>maxViewportHeight&&(t=maxViewportHeight),shift.x*=e/canvasWidth,shift.y*=t/canvasHeight,canvasWidth=e,canvasHeight=t,setCanvas(),setViewport(),setProjection(),remesh=!0}function resize(){if(zoom0=initialZoom,window.top.asyWebApplication&&""==window.top.asyWebApplication.getProjection()&&(window.parent.asyProjection=!1),absolute&&!embedded)canvasWidth=canvasWidth0*window.devicePixelRatio,canvasHeight=canvasHeight0*window.devicePixelRatio;else{let e=canvasWidth0/canvasHeight0;canvasWidth=Math.max(window.innerWidth-10,10),canvasHeight=Math.max(window.innerHeight-10,10),!orthographic&&!window.parent.asyProjection&&canvasWidth<canvasHeight*e&&(zoom0*=canvasWidth/(canvasHeight*e))}canvas.width=canvasWidth,canvas.height=canvasHeight;window.innerWidth,window.innerHeight;let e=1/zoom0;viewportShift[0]*=e,viewportShift[1]*=e,setsize(canvasWidth,canvasHeight),redrawScene()}function expand(){Zoom*=zoomFactor,setZoom()}function shrink(){Zoom/=zoomFactor,setZoom()}class Align{constructor(e,t){if(this.center=e,t){let e=t[0],i=t[1];this.ct=Math.cos(e),this.st=Math.sin(e),this.cp=Math.cos(i),this.sp=Math.sin(i)}}T0(e){return[e[0]+this.center[0],e[1]+this.center[1],e[2]+this.center[2]]}T(e){let t=e[0],i=e[1],a=e[2],n=t*this.ct+a*this.st;return[n*this.cp-i*this.sp+this.center[0],n*this.sp+i*this.cp+this.center[1],-t*this.st+a*this.ct+this.center[2]]}}function Tcorners(e,t,i){let a=[e(t),e([t[0],t[1],i[2]]),e([t[0],i[1],t[2]]),e([t[0],i[1],i[2]]),e([i[0],t[1],t[2]]),e([i[0],t[1],i[2]]),e([i[0],i[1],t[2]]),e(i)];return[minbound(a),maxbound(a)]}function material(e,t,i,a,n,r){Materials.push(new Material(e,t,i,a,n,r))}function patch(e,t,i,a,n,r){P.push(new BezierPatch(e,t,i,a,n,r))}function curve(e,t,i,a,n){P.push(new BezierCurve(e,t,i,a,n))}function pixel(e,t,i,a,n){P.push(new Pixel(e,t,i,a,n))}function triangles(e,t,i,a){P.push(new Triangles(e,t,i,a))}function sphere(e,t,i,n,r){let s,o,l,h,c,d,m=.524670512339254,f=.595936986722291,u=.954967051233925,p=.0820155480083437,g=.996685028842544,v=.0549670512339254,x=.998880711874577,w=.0405017186586849,M=[[[1,0,0],[1,0,m],[f,0,u],[p,0,g],[1,a,0],[1,a,m],[f,a*f,u],[p,a*p,g],[a,1,0],[a,1,m],[a*f,f,u],[a*p,p,g],[0,1,0],[0,1,m],[0,f,u],[0,p,g]],[[p,0,g],[p,a*p,g],[v,0,x],[a*p,p,g],[w,w,1],[.05*a,0,1],[0,p,g],[0,v,x],[0,.05*a,1],[0,0,1]]],b=new Align(e,r);function T(e){let t=Array(e.length);for(let i=0;i<e.length;++i){let a=e[i];t[i]=c([s*a[0],o*a[1],l*a[2]])}return t}r?(h=1,d=0,c=b.T.bind(b)):(h=-1,d=-t,c=b.T0.bind(b));let S=Tcorners(c,[-t,-t,d],[t,t,t]),R=S[0],A=S[1];for(let e=-1;e<=1;e+=2){s=e*t;for(let e=-1;e<=1;e+=2){o=e*t;for(let e=h;e<=1;e+=2){l=e*t;for(let e=0;e<2;++e)P.push(new BezierPatch(T(M[e]),i,n,R,A))}}}}let a=4/3*(Math.sqrt(2)-1);function disk(e,t,i,n,r){let s=1-2*a/3,o=[[1,0,0],[1,-a,0],[a,-1,0],[0,-1,0],[1,a,0],[s,0,0],[0,-s,0],[-a,-1,0],[a,1,0],[0,s,0],[-s,0,0],[-1,-a,0],[0,1,0],[-a,1,0],[-1,a,0],[-1,0,0]],l=new Align(e,r);let h=Tcorners(l.T.bind(l),[-t,-t,0],[t,t,0]);P.push(new BezierPatch(function(e){let i=Array(e.length);for(let a=0;a<e.length;++a){let n=e[a];i[a]=l.T([t*n[0],t*n[1],0])}return i}(o),i,n,h[0],h[1]))}function cylinder(e,t,i,n,r,s,o){let l,h,c=[[1,0,0],[1,0,1/3],[1,0,2/3],[1,0,1],[1,a,0],[1,a,1/3],[1,a,2/3],[1,a,1],[a,1,0],[a,1,1/3],[a,1,2/3],[a,1,1],[0,1,0],[0,1,1/3],[0,1,2/3],[0,1,1]],d=new Align(e,s);function m(e){let t=Array(e.length);for(let a=0;a<e.length;++a){let n=e[a];t[a]=d.T([l*n[0],h*n[1],i*n[2]])}return t}let f=Tcorners(d.T.bind(d),[-t,-t,0],[t,t,i]),u=f[0],p=f[1];for(let e=-1;e<=1;e+=2){l=e*t;for(let e=-1;e<=1;e+=2)h=e*t,P.push(new BezierPatch(m(c),n,r,u,p))}if(o){let t=d.T([0,0,i]);P.push(new BezierCurve([e,t],n,r,e,t))}}function rmf(e,t,i,a,n){class r{constructor(e,t,i){this.p=e,this.r=t,this.t=i,this.s=cross(i,t)}}let s=Number.EPSILON*Math.max(abs2(e),abs2(t),abs2(i),abs2(a));function o(n){if(1==n){let n=[a[0]-i[0],a[1]-i[1],a[2]-i[2]];return abs2(n)>s?unit(n):(n=[2*i[0]-t[0]-a[0],2*i[1]-t[1]-a[1],2*i[2]-t[2]-a[2]],abs2(n)>s?unit(n):[a[0]-e[0]+3*(t[0]-i[0]),a[1]-e[1]+3*(t[1]-i[1]),a[2]-e[2]+3*(t[2]-i[2])])}let r=[a[0]-e[0]+3*(t[0]-i[0]),a[1]-e[1]+3*(t[1]-i[1]),a[2]-e[2]+3*(t[2]-i[2])],o=[2*(e[0]+i[0])-4*t[0],2*(e[1]+i[1])-4*t[1],2*(e[2]+i[2])-4*t[2]],l=[t[0]-e[0],t[1]-e[1],t[2]-e[2]],h=n*n,c=[r[0]*h+o[0]*n+l[0],r[1]*h+o[1]*n+l[1],r[2]*h+o[2]*n+l[2]];return abs2(c)>s?unit(c):(h=2*n,c=[r[0]*h+o[0],r[1]*h+o[1],r[2]*h+o[2]],abs2(c)>s?unit(c):unit(r))}let l=Array(n.length),h=[t[0]-e[0],t[1]-e[1],t[2]-e[2]];abs2(h)<s&&(h=[e[0]-2*t[0]+i[0],e[1]-2*t[1]+i[1],e[2]-2*t[2]+i[2]],abs2(h)<s&&(h=[a[0]-e[0]+3*(t[0]-i[0]),a[1]-e[1]+3*(t[1]-i[1]),a[2]-e[2]+3*(t[2]-i[2])])),h=unit(h);let c=function(e){let t=cross(e,[0,1,0]),i=Number.EPSILON*abs2(e);return abs2(t)>i?unit(t):(t=cross(e,[0,0,1]),abs2(t)>i?unit(t):[1,0,0])}(h);l[0]=new r(e,c,h);for(let s=1;s<n.length;++s){let h=l[s-1],c=n[s],d=1-c,m=d*d,f=m*d,u=3*c;m*=u,d*=u*c;let p=c*c*c,g=[f*e[0]+m*t[0]+d*i[0]+p*a[0],f*e[1]+m*t[1]+d*i[1]+p*a[1],f*e[2]+m*t[2]+d*i[2]+p*a[2]],v=[g[0]-h.p[0],g[1]-h.p[1],g[2]-h.p[2]];if(0!=v[0]||0!=v[1]||0!=v[2]){let e=h.r,t=unit(v),i=h.t,a=dot(t,i),n=[i[0]-2*a*t[0],i[1]-2*a*t[1],i[2]-2*a*t[2]];i=o(c);let d=2*dot(t,e),m=[e[0]-d*t[0],e[1]-d*t[1],e[2]-d*t[2]],f=unit([i[0]-n[0],i[1]-n[1],i[2]-n[2]]),u=2*dot(f,m);m=[m[0]-u*f[0],m[1]-u*f[1],m[2]-u*f[2]],l[s]=new r(g,unit(m),unit(i))}else l[s]=l[s-1]}return l}function tube(e,t,i,n,r,s,o){let l=rmf(e[0],e[1],e[2],e[3],[0,1/3,2/3,1]),h=a*t,c=[[t,0],[t,h],[h,t],[0,t]];function d(t,a,o,h){let d=Array(16);for(let i=0;i<4;++i){let n=l[i],r=n.r[0],s=n.s[0],m=r*t+s*a,f=r*o+s*h;r=n.r[1],s=n.s[1];let u=r*t+s*a,p=r*o+s*h;r=n.r[2],s=n.s[2];let g=r*t+s*a,v=r*o+s*h,x=e[i],w=x[0];w1=x[1],w2=x[2];for(let e=0;e<4;++e){let t=c[e],a=t[0],n=t[1];d[4*i+e]=[m*a+f*n+w,u*a+p*n+w1,g*a+v*n+w2]}}P.push(new BezierPatch(d,i,n,r,s))}d(1,0,0,1),d(0,-1,1,0),d(-1,0,0,-1),d(0,1,-1,0),o&&P.push(new BezierCurve(e,i,n,r,s))}async function getReq(e){return(await fetch(e)).arrayBuffer()}function rgb(e){return e.getBytes().filter((e,t)=>t%4!=3)}function createTexture(e,t,i=gl.RGB16F){let a=e.width(),n=e.height(),r=gl.createTexture();return gl.activeTexture(gl.TEXTURE0+t),gl.bindTexture(gl.TEXTURE_2D,r),gl.pixelStorei(gl.UNPACK_ALIGNMENT,1),gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MIN_FILTER,gl.LINEAR),gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MAG_FILTER,gl.LINEAR),gl.texImage2D(gl.TEXTURE_2D,0,i,a,n,0,gl.RGB,gl.FLOAT,rgb(e)),r}async function initIBL(){let e=imageURL+image+"/";function t(e){return new Promise(t=>setTimeout(t,e))}for(;!Module.EXRLoader;)await t(0);promises=[getReq(imageURL+"refl.exr").then(e=>{let t=new Module.EXRLoader(e);IBLbdrfMap=createTexture(t,0)}),getReq(e+"diffuse.exr").then(e=>{let t=new Module.EXRLoader(e);IBLDiffuseMap=createTexture(t,1)})],refl_promise=[],refl_promise.push(getReq(e+"refl0.exr"));for(let t=1;t<=roughnessStepCount;++t)refl_promise.push(getReq(e+"refl"+t+"w.exr"));finished_promise=Promise.all(refl_promise).then(e=>{let t=gl.createTexture();gl.activeTexture(gl.TEXTURE0+2),gl.pixelStorei(gl.UNPACK_ALIGNMENT,1),gl.bindTexture(gl.TEXTURE_2D,t),gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MAX_LEVEL,e.length-1),gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MIN_FILTER,gl.LINEAR_MIPMAP_LINEAR),gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MAG_FILTER,gl.LINEAR),gl.texParameterf(gl.TEXTURE_2D,gl.TEXTURE_MIN_LOD,0),gl.texParameterf(gl.TEXTURE_2D,gl.TEXTURE_MAX_LOD,roughnessStepCount);for(let t=0;t<e.length;++t){let i=new Module.EXRLoader(e[t]);gl.texImage2D(gl.TEXTURE_2D,t,gl.RGB16F,i.width(),i.height(),0,gl.RGB,gl.FLOAT,rgb(i))}IBLReflMap=t}),promises.push(finished_promise),await Promise.all(promises)}function webGLStart(){canvas=document.getElementById("Asymptote"),embedded=window.top.document!=document,initGL(),gl.enable(gl.BLEND),gl.blendFunc(gl.SRC_ALPHA,gl.ONE_MINUS_SRC_ALPHA),gl.enable(gl.DEPTH_TEST),gl.enable(gl.SCISSOR_TEST),canvas.onmousedown=handleMouseDown,document.onmouseup=handleMouseUpOrTouchEnd,document.onmousemove=handleMouseMove,canvas.onkeydown=handleKey,embedded||enableZoom(),canvas.addEventListener("touchstart",handleTouchStart,!1),canvas.addEventListener("touchend",handleMouseUpOrTouchEnd,!1),canvas.addEventListener("touchcancel",handleMouseUpOrTouchEnd,!1),canvas.addEventListener("touchleave",handleMouseUpOrTouchEnd,!1),canvas.addEventListener("touchmove",handleTouchMove,!1),document.addEventListener("keydown",handleKey,!1),canvasWidth0=canvasWidth,canvasHeight0=canvasHeight,mat4.identity(rotMat),0!=window.innerWidth&&0!=window.innerHeight&&resize(),window.addEventListener("resize",resize,!1),ibl&&initIBL().then(SetIBL).then(redrawScene)}
+let vertex="\n#ifdef WEBGL2\n#define IN in\n#define OUT out\n#else\n#define IN attribute\n#define OUT varying\n#endif\n\nIN vec3 position;\n#ifdef WIDTH\nIN float width;\n#endif\n#ifdef NORMAL\nIN vec3 normal;\n#endif\n\nIN float materialIndex;\n\n#ifdef WEBGL2\nflat out int MaterialIndex;\n#ifdef COLOR\nOUT vec4 Color;\n#endif\n\n#else\nOUT vec4 diffuse;\nOUT vec3 specular;\nOUT float roughness,metallic,fresnel0;\nOUT vec4 emissive;\n\nstruct Material {\n vec4 diffuse,emissive,specular;\n vec4 parameters;\n};\n\nuniform Material Materials[Nmaterials];\n#endif\n\n#ifdef COLOR\nIN vec4 color;\n#endif\n\nuniform mat3 normMat;\nuniform mat4 viewMat;\nuniform mat4 projViewMat;\n\n#ifdef NORMAL\n#ifndef ORTHOGRAPHIC\nOUT vec3 ViewPosition;\n#endif\nOUT vec3 Normal;\n#endif\n\nvoid main(void)\n{\n vec4 v=vec4(position,1.0);\n gl_Position=projViewMat*v;\n\n#ifdef NORMAL\n#ifndef ORTHOGRAPHIC\n ViewPosition=(viewMat*v).xyz;\n#endif\n Normal=normalize(normal*normMat);\n#endif\n\n#ifdef WEBGL2\n MaterialIndex=int(materialIndex);\n#ifdef COLOR\n Color=color;\n#endif\n#else\n#ifdef NORMAL\n Material m;\n#ifdef TRANSPARENT\n m=Materials[int(abs(materialIndex))-1];\n emissive=m.emissive;\n if(materialIndex >= 0.0)\n diffuse=m.diffuse;\n else {\n diffuse=color;\n#if nlights == 0\n emissive += color;\n#endif\n }\n#else\n m=Materials[int(materialIndex)];\n emissive=m.emissive;\n#ifdef COLOR\n diffuse=color;\n#if nlights == 0\n emissive += color;\n#endif\n#else\n diffuse=m.diffuse;\n#endif // COLOR\n#endif // TRANSPARENT\n specular=m.specular.rgb;\n vec4 parameters=m.parameters;\n roughness=1.0-parameters[0];\n metallic=parameters[1];\n fresnel0=parameters[2];\n#else\n emissive=Materials[int(materialIndex)].emissive;\n#endif // NORMAL\n#endif // WEBGL2\n\n#ifdef WIDTH\n gl_PointSize=width;\n#endif\n}\n",fragment="\n#ifdef WEBGL2\n#define IN in\nout vec4 outValue;\n#define OUTVALUE outValue\n#else\n#define IN varying\n#define OUTVALUE gl_FragColor\n#endif\n\n#ifdef WEBGL2\nflat in int MaterialIndex;\n\nstruct Material {\n vec4 diffuse,emissive,specular;\n vec4 parameters;\n};\n\nuniform Material Materials[Nmaterials];\n\nvec4 diffuse;\nvec3 specular;\nfloat roughness,metallic,fresnel0;\nvec4 emissive;\n\n#ifdef COLOR\nin vec4 Color;\n#endif\n\n#else\nIN vec4 diffuse;\nIN vec3 specular;\nIN float roughness,metallic,fresnel0;\nIN vec4 emissive;\n#endif\n\n#ifdef NORMAL\n\n#ifndef ORTHOGRAPHIC\nIN vec3 ViewPosition;\n#endif\nIN vec3 Normal;\n\nvec3 normal;\n\nstruct Light {\n vec3 direction;\n vec3 color;\n};\n\nuniform Light Lights[Nlights];\n\n#ifdef USE_IBL\nuniform sampler2D reflBRDFSampler;\nuniform sampler2D diffuseSampler;\nuniform sampler2D reflImgSampler;\n\nconst float pi=acos(-1.0);\nconst float piInv=1.0/pi;\nconst float twopi=2.0*pi;\nconst float twopiInv=1.0/twopi;\n\n// (x,y,z) -> (r,theta,phi);\n// theta -> [0,pi]: colatitude\n// phi -> [-pi,pi]: longitude\nvec3 cart2sphere(vec3 cart)\n{\n float x=cart.x;\n float y=cart.z;\n float z=cart.y;\n\n float r=length(cart);\n float theta=r > 0.0 ? acos(z/r) : 0.0;\n float phi=atan(y,x);\n\n return vec3(r,theta,phi);\n}\n\nvec2 normalizedAngle(vec3 cartVec)\n{\n vec3 sphericalVec=cart2sphere(cartVec);\n sphericalVec.y=sphericalVec.y*piInv;\n sphericalVec.z=0.75-sphericalVec.z*twopiInv;\n return sphericalVec.zy;\n}\n\nvec3 IBLColor(vec3 viewDir)\n{\n vec3 IBLDiffuse=diffuse.rgb*texture(diffuseSampler,normalizedAngle(normal)).rgb;\n vec3 reflectVec=normalize(reflect(-viewDir,normal));\n vec2 reflCoord=normalizedAngle(reflectVec);\n vec3 IBLRefl=textureLod(reflImgSampler,reflCoord,roughness*ROUGHNESS_STEP_COUNT).rgb;\n vec2 IBLbrdf=texture(reflBRDFSampler,vec2(dot(normal,viewDir),roughness)).rg;\n float specularMultiplier=fresnel0*IBLbrdf.x+IBLbrdf.y;\n vec3 dielectric=IBLDiffuse+specularMultiplier*IBLRefl;\n vec3 metal=diffuse.rgb*IBLRefl;\n return mix(dielectric,metal,metallic);\n}\n#else\nfloat Roughness2;\nfloat NDF_TRG(vec3 h)\n{\n float ndoth=max(dot(normal,h),0.0);\n float alpha2=Roughness2*Roughness2;\n float denom=ndoth*ndoth*(alpha2-1.0)+1.0;\n return denom != 0.0 ? alpha2/(denom*denom) : 0.0;\n}\n\nfloat GGX_Geom(vec3 v)\n{\n float ndotv=max(dot(v,normal),0.0);\n float ap=1.0+Roughness2;\n float k=0.125*ap*ap;\n return ndotv/((ndotv*(1.0-k))+k);\n}\n\nfloat Geom(vec3 v, vec3 l)\n{\n return GGX_Geom(v)*GGX_Geom(l);\n}\n\nfloat Fresnel(vec3 h, vec3 v, float fresnel0)\n{\n float a=1.0-max(dot(h,v),0.0);\n float b=a*a;\n return fresnel0+(1.0-fresnel0)*b*b*a;\n}\n\n// physical based shading using UE4 model.\nvec3 BRDF(vec3 viewDirection, vec3 lightDirection)\n{\n vec3 lambertian=diffuse.rgb;\n vec3 h=normalize(lightDirection+viewDirection);\n\n float omegain=max(dot(viewDirection,normal),0.0);\n float omegaln=max(dot(lightDirection,normal),0.0);\n\n float D=NDF_TRG(h);\n float G=Geom(viewDirection,lightDirection);\n float F=Fresnel(h,viewDirection,fresnel0);\n\n float denom=4.0*omegain*omegaln;\n float rawReflectance=denom > 0.0 ? 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o.webgl2&&(i=t.getContext("webgl2",{alpha:e}),o.embedded&&!i)?(o.webgl2=!1,o.ibl=!1,ht(!1),null):(i||(o.webgl2=!1,o.ibl=!1,i=t.getContext("webgl",{alpha:e})),i||alert("Could not initialize WebGL"),i)}function ht(s=!0){if(o.ibl&&(o.webgl2=!0),e=o.background[3]<1,o.embedded){let a=window.top.document;if(s&&(n=o.canvas.getContext("2d")),i=o.webgl2?a.offscreen2:a.offscreen,i||(i=a.createElement("canvas"),o.webgl2?a.offscreen2=i:a.offscreen=i),o.webgl2?a.asygl2||(a.asygl2=Array(2)):a.asygl||(a.asygl=Array(2)),asygl=o.webgl2?a.asygl2:a.asygl,asygl[e]&&asygl[e].gl)!function(){let i=o.webgl2?window.top.document.asygl2[e]:window.top.document.asygl[e];t=i.gl,d=i.nlights,m=i.Nmaterials,r=i.maxMaterials,xe=i.pixelShader,ge=i.materialShader,we=i.colorShader,Me=i.transparentShader}(),(l.length!=d||Math.min(c.length,r)>m)&&(rt(),at());else{if(rc=ot(i,e),!rc)return;t=rc,rt(),o.webgl2?a.asygl2[e]={}:a.asygl[e]={},at()}}else t=ot(o.canvas,e),rt();$=t.getExtension("OES_element_index_uint"),q=t.TRIANGLES,K=new mt(t.POINTS),Z=new mt(t.LINES),Q=new mt,J=new mt,tt=new mt,et=new mt}function lt(t,e,i,n=[]){let r=o.webgl2?"300 es":"100",s=Array(...n),a=[["nlights",0==V?l.length:0],["Nmaterials",m]],h=[["int","Nlights",Math.max(l.length,1)]];o.webgl2&&s.push("WEBGL2"),o.ibl&&a.push(["ROUGHNESS_STEP_COUNT",8..toFixed(2)]),o.orthographic&&s.push("ORTHOGRAPHIC"),macros_str=a.map(t=>`#define ${t[0]} ${t[1]}`).join("\n"),define_str=s.map(t=>"#define "+t).join("\n"),const_str=h.map(t=>`const ${t[0]} ${t[1]}=${t[2]};`).join("\n"),ext_str=[].map(t=>`#extension ${t}: enable`).join("\n"),shaderSrc=`#version ${r}\n${ext_str}\n${define_str}\n${const_str}\n${macros_str}\n\n\n#ifdef GL_FRAGMENT_PRECISION_HIGH\nprecision highp float;\n#else\nprecision mediump float;\n#endif\n \n${e}\n `;let c=t.createShader(i);return t.shaderSource(c,shaderSrc),t.compileShader(c),t.getShaderParameter(c,t.COMPILE_STATUS)?c:(alert(t.getShaderInfoLog(c)),null)}function ct(e,i,n,r=t.ARRAY_BUFFER){return e.length>0&&(0==i&&(i=t.createBuffer(),n=!0),t.bindBuffer(r,i),n&&t.bufferData(r,e,t.STATIC_DRAW)),i}function dt(e,i,n=e.indices){if(0==e.indices.length)return;let r=i!=xe;!function(e,i){let n=i==xe;t.useProgram(i),t.enableVertexAttribArray(Tt),n&&t.enableVertexAttribArray(It);let r=!n&&l.length>0;r&&t.enableVertexAttribArray(yt);t.enableVertexAttribArray(At),i.projViewMatUniform=t.getUniformLocation(i,"projViewMat"),i.viewMatUniform=t.getUniformLocation(i,"viewMat"),i.normMatUniform=t.getUniformLocation(i,"normMat"),(i==we||i==Me)&&t.enableVertexAttribArray(Et);if(r)for(let t=0;t<l.length;++t)l[t].setUniform(i,t);for(let t=0;t<e.materials.length;++t)e.materials[t].setUniform(i,t);t.uniformMatrix4fv(i.projViewMatUniform,!1,E),t.uniformMatrix4fv(i.viewMatUniform,!1,A),t.uniformMatrix3fv(i.normMatUniform,!1,I)}(e,i),null!=W&&(t.activeTexture(t.TEXTURE0),t.bindTexture(t.TEXTURE_2D,j),t.uniform1i(t.getUniformLocation(i,"reflBRDFSampler"),0),t.activeTexture(t.TEXTURE1),t.bindTexture(t.TEXTURE_2D,W),t.uniform1i(t.getUniformLocation(i,"diffuseSampler"),1),t.activeTexture(t.TEXTURE2),t.bindTexture(t.TEXTURE_2D,G),t.uniform1i(t.getUniformLocation(i,"reflImgSampler"),2));let s=U||e.partial||!e.rendered;e.verticesBuffer=ct(new Float32Array(e.vertices),e.verticesBuffer,s),t.vertexAttribPointer(Tt,3,t.FLOAT,!1,r?24:16,0),r?l.length>0&&t.vertexAttribPointer(yt,3,t.FLOAT,!1,24,12):t.vertexAttribPointer(It,1,t.FLOAT,!1,16,12),e.materialsBuffer=ct(new Int16Array(e.materialIndices),e.materialsBuffer,s),t.vertexAttribPointer(At,1,t.SHORT,!1,2,0),i!=we&&i!=Me||(e.colorsBuffer=ct(new Float32Array(e.colors),e.colorsBuffer,s),t.vertexAttribPointer(Et,4,t.FLOAT,!0,0,0)),e.indicesBuffer=ct($?new Uint32Array(n):new Uint16Array(n),e.indicesBuffer,s,t.ELEMENT_ARRAY_BUFFER),e.rendered=!0,t.drawElements(r?V?t.LINES:e.type:t.POINTS,n.length,$?t.UNSIGNED_INT:t.UNSIGNED_SHORT,0)}class mt{constructor(t){this.type=t||q,this.verticesBuffer=0,this.materialsBuffer=0,this.colorsBuffer=0,this.indicesBuffer=0,this.rendered=!1,this.partial=!1,this.clear()}clear(){this.vertices=[],this.materialIndices=[],this.colors=[],this.indices=[],this.nvertices=0,this.materials=[],this.materialTable=[]}vertex(t,e){return this.vertices.push(t[0]),this.vertices.push(t[1]),this.vertices.push(t[2]),this.vertices.push(e[0]),this.vertices.push(e[1]),this.vertices.push(e[2]),this.materialIndices.push(it),this.nvertices++}Vertex(t,e,i=[0,0,0,0]){return this.vertices.push(t[0]),this.vertices.push(t[1]),this.vertices.push(t[2]),this.vertices.push(e[0]),this.vertices.push(e[1]),this.vertices.push(e[2]),this.materialIndices.push(it),this.colors.push(i[0]),this.colors.push(i[1]),this.colors.push(i[2]),this.colors.push(i[3]),this.nvertices++}vertex0(t,e){return this.vertices.push(t[0]),this.vertices.push(t[1]),this.vertices.push(t[2]),this.vertices.push(e),this.materialIndices.push(it),this.nvertices++}iVertex(t,e,i,n=[0,0,0,0]){let r=6*t;this.vertices[r]=e[0],this.vertices[r+1]=e[1],this.vertices[r+2]=e[2],this.vertices[r+3]=i[0],this.vertices[r+4]=i[1],this.vertices[r+5]=i[2],this.materialIndices[t]=it;let s=4*t;this.colors[s]=n[0],this.colors[s+1]=n[1],this.colors[s+2]=n[2],this.colors[s+3]=n[3],this.indices.push(t)}append(t){ft(this.vertices,t.vertices),ft(this.materialIndices,t.materialIndices),ft(this.colors,t.colors),function(t,e,i){let n=t.length,r=e.length;t.length+=e.length;for(let s=0;s<r;++s)t[n+s]=e[s]+i}(this.indices,t.indices,this.nvertices),this.nvertices+=t.nvertices}}function ft(t,e){let i=t.length,n=e.length;t.length+=n;for(let r=0;r<n;++r)t[i+r]=e[r]}class ut{constructor(){this.data=new mt,this.Onscreen=!1,this.m=[]}offscreen(t){let e=E,i=t[0],n=i[0],r=i[1],s=i[2],a=1/(e[3]*n+e[7]*r+e[11]*s+e[15]);this.x=this.X=(e[0]*n+e[4]*r+e[8]*s+e[12])*a,this.y=this.Y=(e[1]*n+e[5]*r+e[9]*s+e[13])*a;for(let i=1,n=t.length;i<n;++i){let n=t[i],r=n[0],s=n[1],a=n[2],o=1/(e[3]*r+e[7]*s+e[11]*a+e[15]),h=(e[0]*r+e[4]*s+e[8]*a+e[12])*o,l=(e[1]*r+e[5]*s+e[9]*a+e[13])*o;h<this.x?this.x=h:h>this.X&&(this.X=h),l<this.y?this.y=l:l>this.Y&&(this.Y=l)}return(this.X<-1.01||this.x>1.01||this.Y<-1.01||this.y>1.01)&&(this.Onscreen=!1,!0)}T(t){let e=this.c[0],i=this.c[1],n=this.c[2],r=t[0]-e,s=t[1]-i,a=t[2]-n;return[r*I[0]+s*I[3]+a*I[6]+e,r*I[1]+s*I[4]+a*I[7]+i,r*I[2]+s*I[5]+a*I[8]+n]}Tcorners(t,e){return[this.T(t),this.T([t[0],t[1],e[2]]),this.T([t[0],e[1],t[2]]),this.T([t[0],e[1],e[2]]),this.T([e[0],t[1],t[2]]),this.T([e[0],t[1],e[2]]),this.T([e[0],e[1],t[2]]),this.T(e)]}setMaterial(t,e){null==t.materialTable[this.MaterialIndex]&&(t.materials.length>=m&&(t.partial=!0,e()),t.materialTable[this.MaterialIndex]=t.materials.length,t.materials.push(c[this.MaterialIndex])),it=t.materialTable[this.MaterialIndex]}render(){let t;var e,i;if(this.setMaterialIndex(),0==this.CenterIndex?(e=this.Min,i=this.Max,t=[e,[e[0],e[1],i[2]],[e[0],i[1],e[2]],[e[0],i[1],i[2]],[i[0],e[1],e[2]],[i[0],e[1],i[2]],[i[0],i[1],e[2]],i]):(this.c=o.Centers[this.CenterIndex-1],t=this.Tcorners(this.Min,this.Max)),this.offscreen(t))return this.data.clear(),void this.notRendered();let n,r=this.controlpoints;if(0==this.CenterIndex){if(!U&&this.Onscreen)return void this.append();n=r}else{let t=r.length;n=Array(t);for(let e=0;e<t;++e)n[e]=this.T(r[e])}let s=o.orthographic?1:this.Min[2]/o.maxBound[2],a=.75*Math.hypot(s*(S.xmax-S.xmin),s*(S.ymax-S.ymin))/b;this.res2=a*a,this.Epsilon=.1*a,this.data.clear(),this.notRendered(),this.Onscreen=!0,this.process(n)}}function pt(t,e){let i=t[0],n=t.length;for(let r=1;r<n;++r)i=e(i,t[r]);return i}class vt extends ut{constructor(t,e,i,n,r,s){super(),this.controlpoints=t,this.CenterIndex=e,this.MaterialIndex=i,this.color=n;let a=t.length;if(n){let t=n[0][3]+n[1][3]+n[2][3];this.transparent=16==a||4==a?t+n[3][3]<1020:t<765}else this.transparent=c[i].diffuse[3]<1;this.vertex=this.transparent?this.data.Vertex.bind(this.data):this.data.vertex.bind(this.data);let o=this.L2norm2(this.controlpoints),h=Math.sqrt(1e3*Number.EPSILON*o);this.epsilon=o*Number.EPSILON,this.Min=r||this.Bounds(this.controlpoints,Math.min,h),this.Max=s||this.Bounds(this.controlpoints,Math.max,h)}setMaterialIndex(){this.transparent?this.setMaterial(tt,Ie):this.color?this.setMaterial(J,Ae):this.setMaterial(Q,ye)}cornerbound(t,e){let i=e(t[0],t[3]);return i=e(i,t[12]),e(i,t[15])}controlbound(t,e){let i=e(t[1],t[2]);return i=e(i,t[4]),i=e(i,t[5]),i=e(i,t[6]),i=e(i,t[7]),i=e(i,t[8]),i=e(i,t[9]),i=e(i,t[10]),i=e(i,t[11]),i=e(i,t[13]),e(i,t[14])}bound(t,e,i,n,r){if(i=e(i,this.cornerbound(t,e)),e(-1,1)*(i-this.controlbound(t,e))>=-n||0==r)return i;--r,n*=2;let s=new Nt(t[0],t[1],t[2],t[3]),a=new Nt(t[4],t[5],t[6],t[7]),o=new Nt(t[8],t[9],t[10],t[11]),h=new Nt(t[12],t[13],t[14],t[15]),l=new Nt(t[0],t[4],t[8],t[12]),c=new Nt(s.m0,a.m0,o.m0,h.m0),d=new Nt(s.m3,a.m3,o.m3,h.m3),m=new Nt(s.m5,a.m5,o.m5,h.m5),f=new Nt(s.m4,a.m4,o.m4,h.m4),u=new Nt(s.m2,a.m2,o.m2,h.m2),p=new Nt(t[3],t[7],t[11],t[15]),v=[t[0],s.m0,s.m3,s.m5,l.m0,c.m0,d.m0,m.m0,l.m3,c.m3,d.m3,m.m3,l.m5,c.m5,d.m5,m.m5];i=this.bound(v,e,i,n,r);let x=[l.m5,c.m5,d.m5,m.m5,l.m4,c.m4,d.m4,m.m4,l.m2,c.m2,d.m2,m.m2,t[12],h.m0,h.m3,h.m5];i=this.bound(x,e,i,n,r);let g=[m.m5,f.m5,u.m5,p.m5,m.m4,f.m4,u.m4,p.m4,m.m2,f.m2,u.m2,p.m2,h.m5,h.m4,h.m2,t[15]];i=this.bound(g,e,i,n,r);let w=[s.m5,s.m4,s.m2,t[3],m.m0,f.m0,u.m0,p.m0,m.m3,f.m3,u.m3,p.m3,m.m5,f.m5,u.m5,p.m5];return this.bound(w,e,i,n,r)}cornerboundtri(t,e){let i=e(t[0],t[6]);return e(i,t[9])}controlboundtri(t,e){let i=e(t[1],t[2]);return i=e(i,t[3]),i=e(i,t[4]),i=e(i,t[5]),i=e(i,t[7]),e(i,t[8])}boundtri(t,e,i,n,r){if(i=e(i,this.cornerboundtri(t,e)),e(-1,1)*(i-this.controlboundtri(t,e))>=-n||0==r)return i;--r,n*=2;let s=new _t(t),a=[s.l003,s.l102,s.l012,s.l201,s.l111,s.l021,s.l300,s.l210,s.l120,s.l030];i=this.boundtri(a,e,i,n,r);let o=[s.l300,s.r102,s.r012,s.r201,s.r111,s.r021,s.r300,s.r210,s.r120,s.r030];i=this.boundtri(o,e,i,n,r);let h=[s.l030,s.u102,s.u012,s.u201,s.u111,s.u021,s.r030,s.u210,s.u120,s.u030];i=this.boundtri(h,e,i,n,r);let l=[s.r030,s.u201,s.r021,s.u102,s.c111,s.r012,s.l030,s.l120,s.l210,s.l300];return this.boundtri(l,e,i,n,r)}Bounds(t,e,i){let n=Array(3),r=t.length,s=Array(r);for(let a=0;a<3;++a){for(let e=0;e<r;++e)s[e]=t[e][a];n[a]=16==r?this.bound(s,e,s[0],i,p):10==r?this.boundtri(s,e,s[0],i,p):pt(s,e)}return[n[0],n[1],n[2]]}L2norm2(t){let e=t[0],i=0,n=t.length;for(let r=1;r<n;++r)i=Math.max(i,St([t[r][0]-e[0],t[r][1]-e[1],t[r][2]-e[2]]));return i}processTriangle(t){let e=t[0],i=t[1],n=t[2],r=Pt(Vt([i[0]-e[0],i[1]-e[1],i[2]-e[2]],[n[0]-e[0],n[1]-e[1],n[2]-e[2]]));if(!this.offscreen([e,i,n])){let t,s,a;this.color?(t=this.data.Vertex(e,r,this.color[0]),s=this.data.Vertex(i,r,this.color[1]),a=this.data.Vertex(n,r,this.color[2])):(t=this.vertex(e,r),s=this.vertex(i,r),a=this.vertex(n,r)),0==V?(this.data.indices.push(t),this.data.indices.push(s),this.data.indices.push(a)):(this.data.indices.push(t),this.data.indices.push(s),this.data.indices.push(s),this.data.indices.push(a),this.data.indices.push(a),this.data.indices.push(t)),this.append()}}processQuad(t){let e=t[0],i=t[1],n=t[2],r=t[3],s=Vt([i[0]-e[0],i[1]-e[1],i[2]-e[2]],[n[0]-i[0],n[1]-i[1],n[2]-i[2]]),a=Vt([n[0]-r[0],n[1]-r[1],n[2]-r[2]],[r[0]-e[0],r[1]-e[1],r[2]-e[2]]),o=Pt([s[0]+a[0],s[1]+a[1],s[2]+a[2]]);if(!this.offscreen([e,i,n,r])){let t,s,a,h;this.color?(t=this.data.Vertex(e,o,this.color[0]),s=this.data.Vertex(i,o,this.color[1]),a=this.data.Vertex(n,o,this.color[2]),h=this.data.Vertex(r,o,this.color[3])):(t=this.vertex(e,o),s=this.vertex(i,o),a=this.vertex(n,o),h=this.vertex(r,o)),0==V?(this.data.indices.push(t),this.data.indices.push(s),this.data.indices.push(a),this.data.indices.push(t),this.data.indices.push(a),this.data.indices.push(h)):(this.data.indices.push(t),this.data.indices.push(s),this.data.indices.push(s),this.data.indices.push(a),this.data.indices.push(a),this.data.indices.push(h),this.data.indices.push(h),this.data.indices.push(t)),this.append()}}curve(t,e,i,n,r){new wt([t[e],t[i],t[n],t[r]],0,it,this.Min,this.Max).render()}process(t){if(this.transparent&&1!=V&&(it=this.color?-1-it:1+it),10==t.length)return this.process3(t);if(3==t.length)return this.processTriangle(t);if(4==t.length)return this.processQuad(t);if(1==V)return this.curve(t,0,4,8,12),this.curve(t,12,13,14,15),this.curve(t,15,11,7,3),void this.curve(t,3,2,1,0);let e=t[0],i=t[3],n=t[12],r=t[15],s=this.normal(i,t[2],t[1],e,t[4],t[8],n);St(s)<this.epsilon&&(s=this.normal(i,t[2],t[1],e,t[13],t[14],r),St(s)<this.epsilon&&(s=this.normal(r,t[11],t[7],i,t[4],t[8],n)));let a=this.normal(e,t[4],t[8],n,t[13],t[14],r);St(a)<this.epsilon&&(a=this.normal(e,t[4],t[8],n,t[11],t[7],i),St(a)<this.epsilon&&(a=this.normal(i,t[2],t[1],e,t[13],t[14],r)));let o=this.normal(n,t[13],t[14],r,t[11],t[7],i);St(o)<this.epsilon&&(o=this.normal(n,t[13],t[14],r,t[2],t[1],e),St(o)<this.epsilon&&(o=this.normal(e,t[4],t[8],n,t[11],t[7],i)));let h=this.normal(r,t[11],t[7],i,t[2],t[1],e);if(St(h)<this.epsilon&&(h=this.normal(r,t[11],t[7],i,t[4],t[8],n),St(h)<this.epsilon&&(h=this.normal(n,t[13],t[14],r,t[2],t[1],e))),this.color){let l=this.color[0],c=this.color[1],d=this.color[2],m=this.color[3],f=this.data.Vertex(e,s,l),u=this.data.Vertex(n,a,c),p=this.data.Vertex(r,o,d),v=this.data.Vertex(i,h,m);this.Render(t,f,u,p,v,e,n,r,i,!1,!1,!1,!1,l,c,d,m)}else{let l=this.vertex(e,s),c=this.vertex(n,a),d=this.vertex(r,o),m=this.vertex(i,h);this.Render(t,l,c,d,m,e,n,r,i,!1,!1,!1,!1)}this.data.indices.length>0&&this.append()}append(){this.transparent?tt.append(this.data):this.color?J.append(this.data):Q.append(this.data)}notRendered(){this.transparent?tt.rendered=!1:this.color?J.rendered=!1:Q.rendered=!1}Render(t,e,i,n,r,s,a,o,h,l,c,d,m,f,u,p,v){let x=this.Distance(t);if(x[0]<this.res2&&x[1]<this.res2)this.offscreen([s,a,o])||(0==V?(this.data.indices.push(e),this.data.indices.push(i),this.data.indices.push(n)):(this.data.indices.push(e),this.data.indices.push(i),this.data.indices.push(i),this.data.indices.push(n))),this.offscreen([s,o,h])||(0==V?(this.data.indices.push(e),this.data.indices.push(n),this.data.indices.push(r)):(this.data.indices.push(n),this.data.indices.push(r),this.data.indices.push(r),this.data.indices.push(e)));else{if(this.offscreen(t))return;let g=t[0],w=t[3],M=t[12],b=t[15];if(x[0]<this.res2){let x=new Ot(g,t[1],t[2],w),R=new Ot(t[4],t[5],t[6],t[7]),T=new Ot(t[8],t[9],t[10],t[11]),y=new Ot(M,t[13],t[14],b),A=[g,x.m0,x.m3,x.m5,t[4],R.m0,R.m3,R.m5,t[8],T.m0,T.m3,T.m5,M,y.m0,y.m3,y.m5],E=[x.m5,x.m4,x.m2,w,R.m5,R.m4,R.m2,t[7],T.m5,T.m4,T.m2,t[11],y.m5,y.m4,y.m2,b],I=this.normal(A[12],A[13],A[14],A[15],A[11],A[7],A[3]);St(I)<=this.epsilon&&(I=this.normal(A[12],A[13],A[14],A[15],A[2],A[1],A[0]),St(I)<=this.epsilon&&(I=this.normal(A[0],A[4],A[8],A[12],A[11],A[7],A[3])));let L=this.normal(E[3],E[2],E[1],E[0],E[4],E[8],E[12]);St(L)<=this.epsilon&&(L=this.normal(E[3],E[2],E[1],E[0],E[13],E[14],E[15]),St(L)<=this.epsilon&&(L=this.normal(E[15],E[11],E[7],E[3],E[4],E[8],E[12])));let N=this.Epsilon,O=[.5*(a[0]+o[0]),.5*(a[1]+o[1]),.5*(a[2]+o[2])];if(!c)if(c=zt(M,t[13],t[14],b)<this.res2){let t=Pt(this.differential(E[12],E[8],E[4],E[0]));O=[O[0]-N*t[0],O[1]-N*t[1],O[2]-N*t[2]]}else O=A[15];let _=[.5*(h[0]+s[0]),.5*(h[1]+s[1]),.5*(h[2]+s[2])];if(!m)if(m=zt(g,t[1],t[2],w)<this.res2){let t=Pt(this.differential(A[3],A[7],A[11],A[15]));_=[_[0]-N*t[0],_[1]-N*t[1],_[2]-N*t[2]]}else _=E[0];if(f){let t=Array(4),x=Array(4);for(let e=0;e<4;++e)t[e]=.5*(u[e]+p[e]),x[e]=.5*(v[e]+f[e]);let g=this.data.Vertex(O,I,t),w=this.data.Vertex(_,L,x);this.Render(A,e,i,g,w,s,a,O,_,l,c,!1,m,f,u,t,x),this.Render(E,w,g,n,r,_,O,o,h,!1,c,d,m,x,t,p,v)}else{let t=this.vertex(O,I),f=this.vertex(_,L);this.Render(A,e,i,t,f,s,a,O,_,l,c,!1,m),this.Render(E,f,t,n,r,_,O,o,h,!1,c,d,m)}return}if(x[1]<this.res2){let x=new Ot(g,t[4],t[8],M),R=new Ot(t[1],t[5],t[9],t[13]),T=new Ot(t[2],t[6],t[10],t[14]),y=new Ot(w,t[7],t[11],b),A=[g,t[1],t[2],w,x.m0,R.m0,T.m0,y.m0,x.m3,R.m3,T.m3,y.m3,x.m5,R.m5,T.m5,y.m5],E=[x.m5,R.m5,T.m5,y.m5,x.m4,R.m4,T.m4,y.m4,x.m2,R.m2,T.m2,y.m2,M,t[13],t[14],b],I=this.normal(A[0],A[4],A[8],A[12],A[13],A[14],A[15]);St(I)<=this.epsilon&&(I=this.normal(A[0],A[4],A[8],A[12],A[11],A[7],A[3]),St(I)<=this.epsilon&&(I=this.normal(A[3],A[2],A[1],A[0],A[13],A[14],A[15])));let L=this.normal(E[15],E[11],E[7],E[3],E[2],E[1],E[0]);St(L)<=this.epsilon&&(L=this.normal(E[15],E[11],E[7],E[3],E[4],E[8],E[12]),St(L)<=this.epsilon&&(L=this.normal(E[12],E[13],E[14],E[15],E[2],E[1],E[0])));let N=this.Epsilon,O=[.5*(s[0]+a[0]),.5*(s[1]+a[1]),.5*(s[2]+a[2])];if(!l)if(l=zt(g,t[4],t[8],M)<this.res2){let t=Pt(this.differential(E[0],E[1],E[2],E[3]));O=[O[0]-N*t[0],O[1]-N*t[1],O[2]-N*t[2]]}else O=A[12];let _=[.5*(o[0]+h[0]),.5*(o[1]+h[1]),.5*(o[2]+h[2])];if(!d)if(d=zt(b,t[11],t[7],w)<this.res2){let t=Pt(this.differential(A[15],A[14],A[13],A[12]));_=[_[0]-N*t[0],_[1]-N*t[1],_[2]-N*t[2]]}else _=E[3];if(f){let t=Array(4),x=Array(4);for(let e=0;e<4;++e)t[e]=.5*(f[e]+u[e]),x[e]=.5*(p[e]+v[e]);let g=this.data.Vertex(O,I,t),w=this.data.Vertex(_,L,x);this.Render(A,e,g,w,r,s,O,_,h,l,!1,d,m,f,t,x,v),this.Render(E,g,i,n,w,O,a,o,_,l,c,d,!1,t,u,p,x)}else{let t=this.vertex(O,I),f=this.vertex(_,L);this.Render(A,e,t,f,r,s,O,_,h,l,!1,d,m),this.Render(E,t,i,n,f,O,a,o,_,l,c,d,!1)}return}let R=new Ot(g,t[1],t[2],w),T=new Ot(t[4],t[5],t[6],t[7]),y=new Ot(t[8],t[9],t[10],t[11]),A=new Ot(M,t[13],t[14],b),E=new Ot(g,t[4],t[8],M),I=new Ot(R.m0,T.m0,y.m0,A.m0),L=new Ot(R.m3,T.m3,y.m3,A.m3),N=new Ot(R.m5,T.m5,y.m5,A.m5),O=new Ot(R.m4,T.m4,y.m4,A.m4),_=new Ot(R.m2,T.m2,y.m2,A.m2),P=new Ot(w,t[7],t[11],b),S=[g,R.m0,R.m3,R.m5,E.m0,I.m0,L.m0,N.m0,E.m3,I.m3,L.m3,N.m3,E.m5,I.m5,L.m5,N.m5],U=[E.m5,I.m5,L.m5,N.m5,E.m4,I.m4,L.m4,N.m4,E.m2,I.m2,L.m2,N.m2,M,A.m0,A.m3,A.m5],V=[N.m5,O.m5,_.m5,P.m5,N.m4,O.m4,_.m4,P.m4,N.m2,O.m2,_.m2,P.m2,A.m5,A.m4,A.m2,b],B=[R.m5,R.m4,R.m2,w,N.m0,O.m0,_.m0,P.m0,N.m3,O.m3,_.m3,P.m3,N.m5,O.m5,_.m5,P.m5],D=S[15],C=this.normal(S[0],S[4],S[8],S[12],S[13],S[14],S[15]);St(C)<this.epsilon&&(C=this.normal(S[0],S[4],S[8],S[12],S[11],S[7],S[3]),St(C)<this.epsilon&&(C=this.normal(S[3],S[2],S[1],S[0],S[13],S[14],S[15])));let F=this.normal(U[12],U[13],U[14],U[15],U[11],U[7],U[3]);St(F)<this.epsilon&&(F=this.normal(U[12],U[13],U[14],U[15],U[2],U[1],U[0]),St(F)<this.epsilon&&(F=this.normal(U[0],U[4],U[8],U[12],U[11],U[7],U[3])));let z=this.normal(V[15],V[11],V[7],V[3],V[2],V[1],V[0]);St(z)<this.epsilon&&(z=this.normal(V[15],V[11],V[7],V[3],V[4],V[8],V[12]),St(z)<this.epsilon&&(z=this.normal(V[12],V[13],V[14],V[15],V[2],V[1],V[0])));let H=this.normal(B[3],B[2],B[1],B[0],B[4],B[8],B[12]);St(H)<this.epsilon&&(H=this.normal(B[3],B[2],B[1],B[0],B[13],B[14],B[15]),St(H)<this.epsilon&&(H=this.normal(B[15],B[11],B[7],B[3],B[4],B[8],B[12])));let X=this.normal(V[3],V[2],V[1],D,V[4],V[8],V[12]),G=this.Epsilon,W=[.5*(s[0]+a[0]),.5*(s[1]+a[1]),.5*(s[2]+a[2])];if(!l)if(l=zt(g,t[4],t[8],M)<this.res2){let t=Pt(this.differential(U[0],U[1],U[2],U[3]));W=[W[0]-G*t[0],W[1]-G*t[1],W[2]-G*t[2]]}else W=S[12];let j=[.5*(a[0]+o[0]),.5*(a[1]+o[1]),.5*(a[2]+o[2])];if(!c)if(c=zt(M,t[13],t[14],b)<this.res2){let t=Pt(this.differential(V[12],V[8],V[4],V[0]));j=[j[0]-G*t[0],j[1]-G*t[1],j[2]-G*t[2]]}else j=U[15];let k=[.5*(o[0]+h[0]),.5*(o[1]+h[1]),.5*(o[2]+h[2])];if(!d)if(d=zt(b,t[11],t[7],w)<this.res2){let t=Pt(this.differential(B[15],B[14],B[13],B[12]));k=[k[0]-G*t[0],k[1]-G*t[1],k[2]-G*t[2]]}else k=V[3];let Y=[.5*(h[0]+s[0]),.5*(h[1]+s[1]),.5*(h[2]+s[2])];if(!m)if(m=zt(g,t[1],t[2],w)<this.res2){let t=Pt(this.differential(S[3],S[7],S[11],S[15]));Y=[Y[0]-G*t[0],Y[1]-G*t[1],Y[2]-G*t[2]]}else Y=B[0];if(f){let t=Array(4),x=Array(4),g=Array(4),w=Array(4),M=Array(4);for(let e=0;e<4;++e)t[e]=.5*(f[e]+u[e]),x[e]=.5*(u[e]+p[e]),g[e]=.5*(p[e]+v[e]),w[e]=.5*(v[e]+f[e]),M[e]=.5*(t[e]+g[e]);let b=this.data.Vertex(W,C,t),R=this.data.Vertex(j,F,x),T=this.data.Vertex(k,z,g),y=this.data.Vertex(Y,H,w),A=this.data.Vertex(D,X,M);this.Render(S,e,b,A,y,s,W,D,Y,l,!1,!1,m,f,t,M,w),this.Render(U,b,i,R,A,W,a,j,D,l,c,!1,!1,t,u,x,M),this.Render(V,A,R,n,T,D,j,o,k,!1,c,d,!1,M,x,p,g),this.Render(B,y,A,T,r,Y,D,k,h,!1,!1,d,m,w,M,g,v)}else{let t=this.vertex(W,C),f=this.vertex(j,F),u=this.vertex(k,z),p=this.vertex(Y,H),v=this.vertex(D,X);this.Render(S,e,t,v,p,s,W,D,Y,l,!1,!1,m),this.Render(U,t,i,f,v,W,a,j,D,l,c,!1,!1),this.Render(V,v,f,n,u,D,j,o,k,!1,c,d,!1),this.Render(B,p,v,u,r,Y,D,k,h,!1,!1,d,m)}}}process3(t){if(1==V)return this.curve(t,0,1,3,6),this.curve(t,6,7,8,9),void this.curve(t,9,5,2,0);let e=t[0],i=t[6],n=t[9],r=this.normal(n,t[5],t[2],e,t[1],t[3],i),s=this.normal(e,t[1],t[3],i,t[7],t[8],n),a=this.normal(i,t[7],t[8],n,t[5],t[2],e);if(this.color){let o=this.color[0],h=this.color[1],l=this.color[2],c=this.data.Vertex(e,r,o),d=this.data.Vertex(i,s,h),m=this.data.Vertex(n,a,l);this.Render3(t,c,d,m,e,i,n,!1,!1,!1,o,h,l)}else{let o=this.vertex(e,r),h=this.vertex(i,s),l=this.vertex(n,a);this.Render3(t,o,h,l,e,i,n,!1,!1,!1)}this.data.indices.length>0&&this.append()}Render3(t,e,i,n,r,s,a,o,h,l,c,d,m){if(this.Distance3(t)<this.res2)this.offscreen([r,s,a])||(0==V?(this.data.indices.push(e),this.data.indices.push(i),this.data.indices.push(n)):(this.data.indices.push(e),this.data.indices.push(i),this.data.indices.push(i),this.data.indices.push(n),this.data.indices.push(n),this.data.indices.push(e)));else{if(this.offscreen(t))return;let f=t[0],u=t[1],p=t[2],v=t[3],x=t[4],g=t[5],w=t[6],M=t[7],b=t[8],R=t[9],T=[.5*(R[0]+g[0]),.5*(R[1]+g[1]),.5*(R[2]+g[2])],y=[.5*(R[0]+b[0]),.5*(R[1]+b[1]),.5*(R[2]+b[2])],A=[.5*(g[0]+p[0]),.5*(g[1]+p[1]),.5*(g[2]+p[2])],E=[.5*(b[0]+x[0]),.5*(b[1]+x[1]),.5*(b[2]+x[2])],I=[.5*(b[0]+M[0]),.5*(b[1]+M[1]),.5*(b[2]+M[2])],L=[.5*(p[0]+x[0]),.5*(p[1]+x[1]),.5*(p[2]+x[2])],N=[.5*(p[0]+f[0]),.5*(p[1]+f[1]),.5*(p[2]+f[2])],O=[.5*(x[0]+v[0]),.5*(x[1]+v[1]),.5*(x[2]+v[2])],_=[.5*(M[0]+w[0]),.5*(M[1]+w[1]),.5*(M[2]+w[2])],P=[.5*(f[0]+u[0]),.5*(f[1]+u[1]),.5*(f[2]+u[2])],S=[.5*(u[0]+v[0]),.5*(u[1]+v[1]),.5*(u[2]+v[2])],U=[.5*(v[0]+w[0]),.5*(v[1]+w[1]),.5*(v[2]+w[2])],V=[.5*(T[0]+A[0]),.5*(T[1]+A[1]),.5*(T[2]+A[2])],B=[.5*(y[0]+I[0]),.5*(y[1]+I[1]),.5*(y[2]+I[2])],D=[.5*(A[0]+N[0]),.5*(A[1]+N[1]),.5*(A[2]+N[2])],C=[.5*E[0]+.25*(x[0]+u[0]),.5*E[1]+.25*(x[1]+u[1]),.5*E[2]+.25*(x[2]+u[2])],F=[.5*(I[0]+_[0]),.5*(I[1]+_[1]),.5*(I[2]+_[2])],z=[.5*L[0]+.25*(x[0]+M[0]),.5*L[1]+.25*(x[1]+M[1]),.5*L[2]+.25*(x[2]+M[2])],H=[.25*(g[0]+x[0])+.5*O[0],.25*(g[1]+x[1])+.5*O[1],.25*(g[2]+x[2])+.5*O[2]],X=[.5*(P[0]+S[0]),.5*(P[1]+S[1]),.5*(P[2]+S[2])],G=[.5*(S[0]+U[0]),.5*(S[1]+U[1]),.5*(S[2]+U[2])],W=[.5*(z[0]+X[0]),.5*(z[1]+X[1]),.5*(z[2]+X[2])],j=[.5*(z[0]+G[0]),.5*(z[1]+G[1]),.5*(z[2]+G[2])],k=[.5*(X[0]+G[0]),.5*(X[1]+G[1]),.5*(X[2]+G[2])],Y=[.5*(H[0]+F[0]),.5*(H[1]+F[1]),.5*(H[2]+F[2])],$=[.5*(B[0]+H[0]),.5*(B[1]+H[1]),.5*(B[2]+H[2])],q=[.5*(B[0]+F[0]),.5*(B[1]+F[1]),.5*(B[2]+F[2])],K=[.5*(V[0]+C[0]),.5*(V[1]+C[1]),.5*(V[2]+C[2])],Z=[.5*(D[0]+C[0]),.5*(D[1]+C[1]),.5*(D[2]+C[2])],Q=[.5*(V[0]+D[0]),.5*(V[1]+D[1]),.5*(V[2]+D[2])],J=[f,P,N,X,[.5*(L[0]+P[0]),.5*(L[1]+P[1]),.5*(L[2]+P[2])],D,k,W,Z,Q],tt=[k,G,j,U,[.5*(O[0]+_[0]),.5*(O[1]+_[1]),.5*(O[2]+_[2])],Y,w,_,F,q],et=[Q,K,V,$,[.5*(T[0]+E[0]),.5*(T[1]+E[1]),.5*(T[2]+E[2])],T,q,B,y,R],it=[q,$,Y,K,[.25*(A[0]+I[0]+S[0]+x[0]),.25*(A[1]+I[1]+S[1]+x[1]),.25*(A[2]+I[2]+S[2]+x[2])],j,Q,Z,W,k],nt=this.normal(k,j,Y,q,$,K,Q),rt=this.normal(q,$,K,Q,Z,W,k),st=this.normal(Q,Z,W,k,j,Y,q),at=this.Epsilon,ot=[.5*(s[0]+a[0]),.5*(s[1]+a[1]),.5*(s[2]+a[2])];if(!o)if(o=zt(w,M,b,R)<this.res2){let t=Pt(this.sumdifferential(it[0],it[2],it[5],it[9],it[1],it[3],it[6]));ot=[ot[0]-at*t[0],ot[1]-at*t[1],ot[2]-at*t[2]]}else ot=q;let ht=[.5*(a[0]+r[0]),.5*(a[1]+r[1]),.5*(a[2]+r[2])];if(!h)if(h=zt(f,p,g,R)<this.res2){let t=Pt(this.sumdifferential(it[6],it[3],it[1],it[0],it[7],it[8],it[9]));ht=[ht[0]-at*t[0],ht[1]-at*t[1],ht[2]-at*t[2]]}else ht=Q;let lt=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])];if(!l)if(l=zt(f,u,v,w)<this.res2){let t=Pt(this.sumdifferential(it[9],it[8],it[7],it[6],it[5],it[2],it[0]));lt=[lt[0]-at*t[0],lt[1]-at*t[1],lt[2]-at*t[2]]}else lt=k;if(c){let t=Array(4),f=Array(4),u=Array(4);for(let e=0;e<4;++e)t[e]=.5*(d[e]+m[e]),f[e]=.5*(m[e]+c[e]),u[e]=.5*(c[e]+d[e]);let p=this.data.Vertex(ot,nt,t),v=this.data.Vertex(ht,rt,f),x=this.data.Vertex(lt,st,u);this.Render3(J,e,x,v,r,lt,ht,!1,h,l,c,u,f),this.Render3(tt,x,i,p,lt,s,ot,o,!1,l,u,d,t),this.Render3(et,v,p,n,ht,ot,a,o,h,!1,f,t,m),this.Render3(it,p,v,x,ot,ht,lt,!1,!1,!1,t,f,u)}else{let t=this.vertex(ot,nt),c=this.vertex(ht,rt),d=this.vertex(lt,st);this.Render3(J,e,d,c,r,lt,ht,!1,h,l),this.Render3(tt,d,i,t,lt,s,ot,o,!1,l),this.Render3(et,c,t,n,ht,ot,a,o,h,!1),this.Render3(it,t,c,d,ot,ht,lt,!1,!1,!1)}}}Distance(t){let e=t[0],i=t[3],n=t[12],r=t[15],s=Ht(e,n,i,r);s=Math.max(zt(e,t[4],t[8],n)),s=Math.max(s,zt(t[1],t[5],t[9],t[13])),s=Math.max(s,zt(i,t[7],t[11],r)),s=Math.max(s,zt(t[2],t[6],t[10],t[14]));let a=Ht(e,i,n,r);return a=Math.max(a,zt(e,t[1],t[2],i)),a=Math.max(a,zt(t[4],t[5],t[6],t[7])),a=Math.max(a,zt(t[8],t[9],t[10],t[11])),a=Math.max(a,zt(n,t[13],t[14],r)),[s,a]}Distance3(t){let e=t[0],i=t[4],n=t[6],r=t[9],s=St([(e[0]+n[0]+r[0])*(1/3)-i[0],(e[1]+n[1]+r[1])*(1/3)-i[1],(e[2]+n[2]+r[2])*(1/3)-i[2]]);return s=Math.max(s,zt(e,t[1],t[3],n)),s=Math.max(s,zt(e,t[2],t[5],r)),Math.max(s,zt(n,t[7],t[8],r))}differential(t,e,i,n){let r=[3*(e[0]-t[0]),3*(e[1]-t[1]),3*(e[2]-t[2])];return St(r)>this.epsilon?r:(r=Ct(t,e,i),St(r)>this.epsilon?r:Ft(t,e,i,n))}sumdifferential(t,e,i,n,r,s,a){let o=this.differential(t,e,i,n),h=this.differential(t,r,s,a);return[o[0]+h[0],o[1]+h[1],o[2]+h[2]]}normal(t,e,i,n,r,s,a){let o=3*(r[0]-n[0]),h=3*(r[1]-n[1]),l=3*(r[2]-n[2]),c=3*(i[0]-n[0]),d=3*(i[1]-n[1]),m=3*(i[2]-n[2]),f=[h*m-l*d,l*c-o*m,o*d-h*c];if(St(f)>this.epsilon)return f;let u=[c,d,m],p=[o,h,l],v=Ct(n,i,e),x=Ct(n,r,s),g=Vt(x,u),w=Vt(p,v);if(f=[g[0]+w[0],g[1]+w[1],g[2]+w[2]],St(f)>this.epsilon)return f;let M=Ft(n,i,e,t),b=Ft(n,r,s,a);g=Vt(p,M),w=Vt(b,u);let R=Vt(x,v);return f=[g[0]+w[0]+R[0],g[1]+w[1]+R[1],g[2]+w[2]+R[2]],St(f)>this.epsilon?f:(g=Vt(b,v),w=Vt(x,M),f=[g[0]+w[0],g[1]+w[1],g[2]+w[2]],St(f)>this.epsilon?f:Vt(b,M))}}function xt(t){return 0<=t&&t<=1}class gt{constructor(t,e,i){const n=1e3*Number.EPSILON,r=n*n;if(Math.abs(t)<=n*Math.abs(e)+r*Math.abs(i))Math.abs(e)>n*Math.abs(i)?(this.roots=1,this.t1=-i/e):0==i?(this.roots=1,this.t1=0):this.roots=0;else{let r=.5*e/t,s=e*r;if(Math.abs(s)<=n*Math.abs(i)){let e=-i/t;e>=0?(this.roots=2,this.t2=Math.sqrt(e),this.t1=-this.t2):this.roots=0}else{let t=-2*i/s;if(t>-1){this.roots=2;let e=r*function(t){return t/(Math.sqrt(1+t)+1)}(t),i=-e-2*r;i<=e?(this.t1=i,this.t2=e):(this.t1=e,this.t2=i)}else-1==t?(this.roots=1,this.t1=this.t2=-r):this.roots=0}}}}class wt extends ut{constructor(t,e,i,n,r){if(super(),this.controlpoints=t,this.CenterIndex=e,this.MaterialIndex=i,n&&r)this.Min=n,this.Max=r;else{let t=this.Bounds(this.controlpoints);this.Min=t[0],this.Max=t[1]}}Bounds(t){let e=Array(3),i=Array(3),n=t.length,r=Array(n);for(let h=0;h<3;++h){for(let e=0;e<n;++e)r[e]=t[e][h];let l,c;if(l=c=r[0],4==n){l=Math.min(l,r[3]),c=Math.max(c,r[3]);let t=(s=r[0],a=r[1],o=r[2],[r[3]-s+3*(a-o),2*(s+o)-4*a,a-s]),e=new gt(t[0],t[1],t[2]);if(0!=e.roots&&xt(e.t1)){let t=Bt(r[0],r[1],r[2],r[3],e.t1);l=Math.min(l,t),c=Math.max(c,t)}if(2==e.roots&&xt(e.t2)){let t=Bt(r[0],r[1],r[2],r[3],e.t2);l=Math.min(l,t),c=Math.max(c,t)}}else{let t=r[1];l=Math.min(l,t),c=Math.max(c,t)}e[h]=l,i[h]=c}var s,a,o;return[[e[0],e[1],e[2]],[i[0],i[1],i[2]]]}setMaterialIndex(){this.setMaterial(Z,Te)}processLine(t){let e=t[0],i=t[1];if(!this.offscreen([e,i])){let t=[0,0,1];this.data.indices.push(this.data.vertex(e,t)),this.data.indices.push(this.data.vertex(i,t)),this.append()}}process(t){if(2==t.length)return this.processLine(t);let e=t[0],i=t[1],n=t[2],r=t[3],s=this.normal(Dt(e,i),Ct(e,i,n)),a=this.normal(Dt(n,r),Ct(r,n,i)),o=this.data.vertex(e,s),h=this.data.vertex(r,a);this.Render(t,o,h),this.data.indices.length>0&&this.append()}append(){Z.append(this.data)}notRendered(){Z.rendered=!1}Render(t,e,i){let n=t[0],r=t[1],s=t[2],a=t[3];if(zt(n,r,s,a)<this.res2)this.offscreen([n,a])||(this.data.indices.push(e),this.data.indices.push(i));else{if(this.offscreen(t))return;let o=[.5*(n[0]+r[0]),.5*(n[1]+r[1]),.5*(n[2]+r[2])],h=[.5*(r[0]+s[0]),.5*(r[1]+s[1]),.5*(r[2]+s[2])],l=[.5*(s[0]+a[0]),.5*(s[1]+a[1]),.5*(s[2]+a[2])],c=[.5*(o[0]+h[0]),.5*(o[1]+h[1]),.5*(o[2]+h[2])],d=[.5*(h[0]+l[0]),.5*(h[1]+l[1]),.5*(h[2]+l[2])],m=[.5*(c[0]+d[0]),.5*(c[1]+d[1]),.5*(c[2]+d[2])],f=[n,o,c,m],u=[m,d,l,a],p=this.normal(function(t,e,i,n){return[i[0]+n[0]-t[0]-e[0],i[1]+n[1]-t[1]-e[1],i[2]+n[2]-t[2]-e[2]]}(n,r,s,a),function(t,e,i,n){return[3*t[0]-5*e[0]+i[0]+n[0],3*t[1]-5*e[1]+i[1]+n[1],3*t[2]-5*e[2]+i[2]+n[2]]}(n,r,s,a)),v=this.data.vertex(m,p);this.Render(f,e,v),this.Render(u,v,i)}}normal(t,e){let i=Ut(t,t),n=Ut(t,e);return[i*e[0]-n*t[0],i*e[1]-n*t[1],i*e[2]-n*t[2]]}}class Mt extends ut{constructor(t,e,i){super(),this.controlpoint=t,this.width=e,this.CenterIndex=0,this.MaterialIndex=i,this.Min=t,this.Max=t}setMaterialIndex(){this.setMaterial(K,Re)}process(t){this.data.indices.push(this.data.vertex0(this.controlpoint,this.width)),this.append()}append(){K.append(this.data)}notRendered(){K.rendered=!1}}class bt extends ut{constructor(t,e){super(),this.CenterIndex=t,this.MaterialIndex=e,this.Min=this.Bounds(F,Math.min),this.Max=this.Bounds(F,Math.max),this.controlpoints=F,this.Normals=z,this.Colors=H,this.Indices=X,F=[],z=[],H=[],X=[],this.transparent=c[this.MaterialIndex].diffuse[3]<1}Bounds(t,e){let i=Array(3),n=t.length,r=Array(n);for(let s=0;s<3;++s){for(let e=0;e<n;++e)r[e]=t[e][s];i[s]=pt(r,e)}return[i[0],i[1],i[2]]}setMaterialIndex(){this.transparent?this.setMaterial(tt,Ie):this.setMaterial(et,Ee)}process(t){this.data.vertices=new Array(6*t.length),it=this.Colors.length>0?-1-it:1+it;for(let e=0,i=this.Indices.length;e<i;++e){let i=this.Indices[e],n=i[0],r=t[n[0]],s=t[n[1]],a=t[n[2]];if(!this.offscreen([r,s,a])){let t=i.length>1?i[1]:n;if(t&&0!=t.length||(t=n),this.Colors.length>0){let e=i.length>2?i[2]:n;e&&0!=e.length||(e=n);let o=this.Colors[e[0]],h=this.Colors[e[1]],l=this.Colors[e[2]];this.transparent|=o[3]+h[3]+l[3]<765,0==V?(this.data.iVertex(n[0],r,this.Normals[t[0]],o),this.data.iVertex(n[1],s,this.Normals[t[1]],h),this.data.iVertex(n[2],a,this.Normals[t[2]],l)):(this.data.iVertex(n[0],r,this.Normals[t[0]],o),this.data.iVertex(n[1],s,this.Normals[t[1]],h),this.data.iVertex(n[1],s,this.Normals[t[1]],h),this.data.iVertex(n[2],a,this.Normals[t[2]],l),this.data.iVertex(n[2],a,this.Normals[t[2]],l),this.data.iVertex(n[0],r,this.Normals[t[0]],o))}else 0==V?(this.data.iVertex(n[0],r,this.Normals[t[0]]),this.data.iVertex(n[1],s,this.Normals[t[1]]),this.data.iVertex(n[2],a,this.Normals[t[2]])):(this.data.iVertex(n[0],r,this.Normals[t[0]]),this.data.iVertex(n[1],s,this.Normals[t[1]]),this.data.iVertex(n[1],s,this.Normals[t[1]]),this.data.iVertex(n[2],a,this.Normals[t[2]]),this.data.iVertex(n[2],a,this.Normals[t[2]]),this.data.iVertex(n[0],r,this.Normals[t[0]]))}}this.data.nvertices=t.length,this.data.indices.length>0&&this.append()}append(){this.transparent?tt.append(this.data):et.append(this.data)}notRendered(){this.transparent?tt.rendered=!1:et.rendered=!1}}function Rt(){M=-Math.tan(.5*o.angleOfView)*o.maxBound[2],_.x=_.y=0,_.z=.5*(o.minBound[2]+o.maxBound[2]),x=v=o.zoom0,S.zmin=o.minBound[2],S.zmax=o.maxBound[2],P.x=P.y=0,Oe(),U=!0,Ne()}let Tt=0,yt=1,At=2,Et=3,It=4;function Lt(e=[]){let i=lt(t,vertex,t.VERTEX_SHADER,e),n=lt(t,fragment,t.FRAGMENT_SHADER,e),r=t.createProgram();return t.attachShader(r,i),t.attachShader(r,n),t.bindAttribLocation(r,Tt,"position"),t.bindAttribLocation(r,yt,"normal"),t.bindAttribLocation(r,At,"materialIndex"),t.bindAttribLocation(r,Et,"color"),t.bindAttribLocation(r,It,"width"),t.linkProgram(r),t.getProgramParameter(r,t.LINK_STATUS)||alert("Could not initialize shaders"),r}class Nt{constructor(t,e,i,n){this.m0=.5*(t+e);let r=.5*(e+i);this.m2=.5*(i+n),this.m3=.5*(this.m0+r),this.m4=.5*(r+this.m2),this.m5=.5*(this.m3+this.m4)}}class Ot{constructor(t,e,i,n){this.m0=[.5*(t[0]+e[0]),.5*(t[1]+e[1]),.5*(t[2]+e[2])];let r=.5*(e[0]+i[0]),s=.5*(e[1]+i[1]),a=.5*(e[2]+i[2]);this.m2=[.5*(i[0]+n[0]),.5*(i[1]+n[1]),.5*(i[2]+n[2])],this.m3=[.5*(this.m0[0]+r),.5*(this.m0[1]+s),.5*(this.m0[2]+a)],this.m4=[.5*(r+this.m2[0]),.5*(s+this.m2[1]),.5*(a+this.m2[2])],this.m5=[.5*(this.m3[0]+this.m4[0]),.5*(this.m3[1]+this.m4[1]),.5*(this.m3[2]+this.m4[2])]}}class _t{constructor(t){this.l003=t[0];let e=t[1],i=t[2],n=t[3],r=t[4],s=t[5];this.r300=t[6];let a=t[7],o=t[8];this.u030=t[9],this.u021=.5*(this.u030+s),this.u120=.5*(this.u030+o);let h=.5*(s+i),l=.5*(o+r),c=.5*(o+a),d=.5*(i+r);this.l012=.5*(i+this.l003);let m=.5*(r+n);this.r210=.5*(a+this.r300),this.l102=.5*(this.l003+e);let f=.5*(e+n);this.r201=.5*(n+this.r300),this.u012=.5*(this.u021+h),this.u210=.5*(this.u120+c),this.l021=.5*(h+this.l012);let u=.5*l+.25*(r+e);this.r120=.5*(c+this.r210);let p=.5*d+.25*(r+a),v=.25*(s+r)+.5*m;this.l201=.5*(this.l102+f),this.r102=.5*(f+this.r201),this.l210=.5*(p+this.l201),this.r012=.5*(p+this.r102),this.l300=.5*(this.l201+this.r102),this.r021=.5*(v+this.r120),this.u201=.5*(this.u210+v),this.r030=.5*(this.u210+this.r120),this.u102=.5*(this.u012+u),this.l120=.5*(this.l021+u),this.l030=.5*(this.u012+this.l021),this.l111=.5*(d+this.l102),this.r111=.5*(m+this.r210),this.u111=.5*(this.u021+l),this.c111=.25*(h+c+f+r)}}function Pt(t){let e=1/(Math.sqrt(t[0]*t[0]+t[1]*t[1]+t[2]*t[2])||1);return[t[0]*e,t[1]*e,t[2]*e]}function St(t){return 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