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createVerticesFromHeightmap.js

createVerticesFromHeightmap.js 26 KB
文件历史 原始文件

123 
  1. define(["./Matrix2-9aa31791","./AxisAlignedBoundingBox-07c6b7f2","./Transforms-d13cc04e","./when-4bbc8319","./RuntimeError-346a3079","./TerrainEncoding-ba779f11","./ComponentDatatype-93750d1a","./OrientedBoundingBox-4b932f63","./WebMercatorProjection-58801a11","./createTaskProcessorWorker","./combine-83860057","./AttributeCompression-af389d04","./WebGLConstants-1c8239cc","./EllipsoidTangentPlane-eecce7e8","./IntersectionTests-96a04219","./Plane-318d6937"],(function(e,t,a,i,r,n,s,l,o,f,u,c,d,h,m,g){"use strict";var p=Object.freeze({NONE:0,LERC:1}),x={};x.DEFAULT_STRUCTURE=Object.freeze({heightScale:1,heightOffset:0,elementsPerHeight:1,stride:1,elementMultiplier:256,isBigEndian:!1});var w=new e.Cartesian3,k=new e.Matrix4,y=new e.Cartesian3,I=new e.Cartesian3;x.computeVertices=function(r){var f,u,c,d,h=Math.cos,m=Math.sin,g=Math.sqrt,p=Math.atan,v=Math.exp,b=s.CesiumMath.PI_OVER_TWO,U=s.CesiumMath.toRadians,T=r.heightmap,M=r.width,V=r.height,A=r.skirtHeight,B=A>0,D=i.defaultValue(r.isGeographic,!0),S=i.defaultValue(r.ellipsoid,e.Ellipsoid.WGS84),P=1/S.maximumRadius,E=e.Rectangle.clone(r.nativeRectangle),C=e.Rectangle.clone(r.rectangle);i.defined(C)?(f=C.west,u=C.south,c=C.east,d=C.north):D?(f=U(E.west),u=U(E.south),c=U(E.east),d=U(E.north)):(f=E.west*P,u=b-2*p(v(-E.south*P)),c=E.east*P,d=b-2*p(v(-E.north*P)));var F=r.relativeToCenter,N=i.defined(F);F=N?F:e.Cartesian3.ZERO;var O=i.defaultValue(r.includeWebMercatorT,!1),R=i.defaultValue(r.exaggeration,1),L=i.defaultValue(r.exaggerationRelativeHeight,0),z=1!==R,H=i.defaultValue(r.structure,x.DEFAULT_STRUCTURE),_=i.defaultValue(H.heightScale,x.DEFAULT_STRUCTURE.heightScale),Y=i.defaultValue(H.heightOffset,x.DEFAULT_STRUCTURE.heightOffset),W=i.defaultValue(H.elementsPerHeight,x.DEFAULT_STRUCTURE.elementsPerHeight),X=i.defaultValue(H.stride,x.DEFAULT_STRUCTURE.stride),Z=i.defaultValue(H.elementMultiplier,x.DEFAULT_STRUCTURE.elementMultiplier),j=i.defaultValue(H.isBigEndian,x.DEFAULT_STRUCTURE.isBigEndian),G=e.Rectangle.computeWidth(E),q=e.Rectangle.computeHeight(E),Q=G/(M-1),J=q/(V-1);D||(G*=P,q*=P);var K,$,ee=S.radiiSquared,te=ee.x,ae=ee.y,ie=ee.z,re=65536,ne=-65536,se=a.Transforms.eastNorthUpToFixedFrame(F,S),le=e.Matrix4.inverseTransformation(se,k);O&&(K=o.WebMercatorProjection.geodeticLatitudeToMercatorAngle(u),$=1/(o.WebMercatorProjection.geodeticLatitudeToMercatorAngle(d)-K));var oe=y;oe.x=Number.POSITIVE_INFINITY,oe.y=Number.POSITIVE_INFINITY,oe.z=Number.POSITIVE_INFINITY;var fe=I;fe.x=Number.NEGATIVE_INFINITY,fe.y=Number.NEGATIVE_INFINITY,fe.z=Number.NEGATIVE_INFINITY;var ue=Number.POSITIVE_INFINITY,ce=M*V,de=ce+(A>0?2*M+2*V:0),he=new Array(de),me=new Array(de),ge=new Array(de),pe=O?new Array(de):[],xe=z?new Array(de):[],we=0,ke=V,ye=0,Ie=M;B&&(--we,++ke,--ye,++Ie);for(var ve=1e-5,be=we;be<ke;++be){var Ue=be;Ue<0&&(Ue=0),Ue>=V&&(Ue=V-1);var Te=E.north-J*Ue,Me=((Te=D?U(Te):b-2*p(v(-Te*P)))-u)/(d-u);Me=s.CesiumMath.clamp(Me,0,1);var Ve=be===we,Ae=be===ke-1;A>0&&(Ve?Te+=ve*q:Ae&&(Te-=ve*q));var Be,De=h(Te),Se=m(Te),Pe=ie*Se;O&&(Be=(o.WebMercatorProjection.geodeticLatitudeToMercatorAngle(Te)-K)*$);for(var Ee=ye;Ee<Ie;++Ee){var Ce=Ee;Ce<0&&(Ce=0),Ce>=M&&(Ce=M-1);var Fe,Ne,Oe=Ue*(M*X)+Ce*X;if(1===W)Fe=T[Oe];else if(Fe=0,j)for(Ne=0;Ne<W;++Ne)Fe=Fe*Z+T[Oe+Ne];else for(Ne=W-1;Ne>=0;--Ne)Fe=Fe*Z+T[Oe+Ne];Fe=Fe*_+Y,ne=Math.max(ne,Fe),re=Math.min(re,Fe);var Re=E.west+Q*Ce;D?Re=U(Re):Re*=P;var Le=(Re-f)/(c-f);Le=s.CesiumMath.clamp(Le,0,1);var ze=Ue*M+Ce;if(A>0){var He=Ee===ye,_e=Ee===Ie-1,Ye=Ve||Ae||He||_e;if((Ve||Ae)&&(He||_e))continue;Ye&&(Fe-=A,He?(ze=ce+(V-Ue-1),Re-=ve*G):Ae?ze=ce+V+(M-Ce-1):_e?(ze=ce+V+M+Ue,Re+=ve*G):Ve&&(ze=ce+V+M+V+Ce))}var We=De*h(Re),Xe=De*m(Re),Ze=te*We,je=ae*Xe,Ge=1/g(Ze*We+je*Xe+Pe*Se),qe=Ze*Ge,Qe=je*Ge,Je=Pe*Ge,Ke=new e.Cartesian3;Ke.x=qe+We*Fe,Ke.y=Qe+Xe*Fe,Ke.z=Je+Se*Fe,e.Matrix4.multiplyByPoint(le,Ke,w),e.Cartesian3.minimumByComponent(w,oe,oe),e.Cartesian3.maximumByComponent(w,fe,fe),ue=Math.min(ue,Fe),he[ze]=Ke,ge[ze]=new e.Cartesian2(Le,Me),me[ze]=Fe,O&&(pe[ze]=Be),z&&(xe[ze]=S.geodeticSurfaceNormal(Ke))}}var $e,et,tt=a.BoundingSphere.fromPoints(he);(i.defined(C)&&($e=l.OrientedBoundingBox.fromRectangle(C,re,ne,S)),N)&&(et=new n.EllipsoidalOccluder(S).computeHorizonCullingPointPossiblyUnderEllipsoid(F,he,re));for(var at=new t.AxisAlignedBoundingBox(oe,fe,F),it=new n.TerrainEncoding(F,at,ue,ne,se,!1,O,z,R,L),rt=new Float32Array(de*it.stride),nt=0,st=0;st<de;++st)nt=it.encode(rt,nt,he[st],ge[st],me[st],void 0,pe[st],xe[st]);return{vertices:rt,maximumHeight:ne,minimumHeight:re,encoding:it,boundingSphere3D:tt,orientedBoundingBox:$e,occludeePointInScaledSpace:et}};var v=i.createCommonjsModule((function(e){
    2. 

  2. /* Copyright 2015-2018 Esri. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 @preserve */
    3. 

  3. !function(){var t,a,i,r,n,s,l,o,f,u,c,d,h,m,g,p,x=(t={defaultNoDataValue:-34027999387901484e22,decode:function(e,s){var l=(s=s||{}).encodedMaskData||null===s.encodedMaskData,o=n(e,s.inputOffset||0,l),f=null!==s.noDataValue?s.noDataValue:t.defaultNoDataValue,u=a(o,s.pixelType||Float32Array,s.encodedMaskData,f,s.returnMask),c={width:o.width,height:o.height,pixelData:u.resultPixels,minValue:u.minValue,maxValue:o.pixels.maxValue,noDataValue:f};return u.resultMask&&(c.maskData=u.resultMask),s.returnEncodedMask&&o.mask&&(c.encodedMaskData=o.mask.bitset?o.mask.bitset:null),s.returnFileInfo&&(c.fileInfo=i(o),s.computeUsedBitDepths&&(c.fileInfo.bitDepths=r(o))),c}},a=function(e,t,a,i,r){var n,l,o,f=0,u=e.pixels.numBlocksX,c=e.pixels.numBlocksY,d=Math.floor(e.width/u),h=Math.floor(e.height/c),m=2*e.maxZError,g=Number.MAX_VALUE;a=a||(e.mask?e.mask.bitset:null),l=new t(e.width*e.height),r&&a&&(o=new Uint8Array(e.width*e.height));for(var p,x,w=new Float32Array(d*h),k=0;k<=c;k++){var y=k!==c?h:e.height%c;if(0!==y)for(var I=0;I<=u;I++){var v=I!==u?d:e.width%u;if(0!==v){var b,U,T,M,V=k*e.width*h+I*d,A=e.width-v,B=e.pixels.blocks[f];if(B.encoding<2?(0===B.encoding?b=B.rawData:(s(B.stuffedData,B.bitsPerPixel,B.numValidPixels,B.offset,m,w,e.pixels.maxValue),b=w),U=0):T=2===B.encoding?0:B.offset,a)for(x=0;x<y;x++){for(7&V&&(M=a[V>>3],M<<=7&V),p=0;p<v;p++)7&V||(M=a[V>>3]),128&M?(o&&(o[V]=1),g=g>(n=B.encoding<2?b[U++]:T)?n:g,l[V++]=n):(o&&(o[V]=0),l[V++]=i),M<<=1;V+=A}else if(B.encoding<2)for(x=0;x<y;x++){for(p=0;p<v;p++)g=g>(n=b[U++])?n:g,l[V++]=n;V+=A}else for(g=g>T?T:g,x=0;x<y;x++){for(p=0;p<v;p++)l[V++]=T;V+=A}if(1===B.encoding&&U!==B.numValidPixels)throw"Block and Mask do not match";f++}}}return{resultPixels:l,resultMask:o,minValue:g}},i=function(e){return{fileIdentifierString:e.fileIdentifierString,fileVersion:e.fileVersion,imageType:e.imageType,height:e.height,width:e.width,maxZError:e.maxZError,eofOffset:e.eofOffset,mask:e.mask?{numBlocksX:e.mask.numBlocksX,numBlocksY:e.mask.numBlocksY,numBytes:e.mask.numBytes,maxValue:e.mask.maxValue}:null,pixels:{numBlocksX:e.pixels.numBlocksX,numBlocksY:e.pixels.numBlocksY,numBytes:e.pixels.numBytes,maxValue:e.pixels.maxValue,noDataValue:e.noDataValue}}},r=function(e){for(var t=e.pixels.numBlocksX*e.pixels.numBlocksY,a={},i=0;i<t;i++){var r=e.pixels.blocks[i];0===r.encoding?a.float32=!0:1===r.encoding?a[r.bitsPerPixel]=!0:a[0]=!0}return Object.keys(a)},n=function(e,t,a){var i={},r=new Uint8Array(e,t,10);if(i.fileIdentifierString=String.fromCharCode.apply(null,r),"CntZImage"!==i.fileIdentifierString.trim())throw"Unexpected file identifier string: "+i.fileIdentifierString;t+=10;var n=new DataView(e,t,24);if(i.fileVersion=n.getInt32(0,!0),i.imageType=n.getInt32(4,!0),i.height=n.getUint32(8,!0),i.width=n.getUint32(12,!0),i.maxZError=n.getFloat64(16,!0),t+=24,!a)if(n=new DataView(e,t,16),i.mask={},i.mask.numBlocksY=n.getUint32(0,!0),i.mask.numBlocksX=n.getUint32(4,!0),i.mask.numBytes=n.getUint32(8,!0),i.mask.maxValue=n.getFloat32(12,!0),t+=16,i.mask.numBytes>0){var s=new Uint8Array(Math.ceil(i.width*i.height/8)),l=(n=new DataView(e,t,i.mask.numBytes)).getInt16(0,!0),o=2,f=0;do{if(l>0)for(;l--;)s[f++]=n.getUint8(o++);else{var u=n.getUint8(o++);for(l=-l;l--;)s[f++]=u}l=n.getInt16(o,!0),o+=2}while(o<i.mask.numBytes);if(-32768!==l||f<s.length)throw"Unexpected end of mask RLE encoding";i.mask.bitset=s,t+=i.mask.numBytes}else 0==(i.mask.numBytes|i.mask.numBlocksY|i.mask.maxValue)&&(i.mask.bitset=new Uint8Array(Math.ceil(i.width*i.height/8)));n=new DataView(e,t,16),i.pixels={},i.pixels.numBlocksY=n.getUint32(0,!0),i.pixels.numBlocksX=n.getUint32(4,!0),i.pixels.numBytes=n.getUint32(8,!0),i.pixels.maxValue=n.getFloat32(12,!0),t+=16;var c=i.pixels.numBlocksX,d=i.pixels.numBlocksY,h=c+(i.width%c>0?1:0),m=d+(i.height%d>0?1:0);i.pixels.blocks=new Array(h*m);for(var g=0,p=0;p<m;p++)for(var x=0;x<h;x++){var w=0,k=e.byteLength-t;n=new DataView(e,t,Math.min(10,k));var y={};i.pixels.blocks[g++]=y;var I=n.getUint8(0);if(w++,y.encoding=63&I,y.encoding>3)throw"Invalid block encoding ("+y.encoding+")";if(2!==y.encoding){if(0!==I&&2!==I){if(I>>=6,y.offsetType=I,2===I)y.offset=n.getInt8(1),w++;else if(1===I)y.offset=n.getInt16(1,!0),w+=2;else{if(0!==I)throw"Invalid block offset type";y.offset=n.getFloat32(1,!0),w+=4}if(1===y.encoding)if(I=n.getUint8(w),w++,y.bitsPerPixel=63&I,I>>=6,y.numValidPixelsType=I,2===I)y.numValidPixels=n.getUint8(w),w++;else if(1===I)y.numValidPixels=n.getUint16(w,!0),w+=2;else{if(0!==I)throw"Invalid valid pixel count type";y.numValidPixels=n.getUint32(w,!0),w+=4}}var v;if(t+=w,3!==y.encoding)if(0===y.encoding){var b=(i.pixels.numBytes-1)/4;if(b!==Math.floor(b))throw"uncompressed block has invalid length";v=new ArrayBuffer(4*b),new Uint8Array(v).set(new Uint8Array(e,t,4*b));var U=new Float32Array(v);y.rawData=U,t+=4*b}else if(1===y.encoding){var T=Math.ceil(y.numValidPixels*y.bitsPerPixel/8),M=Math.ceil(T/4);v=new ArrayBuffer(4*M),new Uint8Array(v).set(new Uint8Array(e,t,T)),y.stuffedData=new Uint32Array(v),t+=T}}else t++}return i.eofOffset=t,i},s=function(e,t,a,i,r,n,s){var l,o,f,u=(1<<t)-1,c=0,d=0,h=Math.ceil((s-i)/r),m=4*e.length-Math.ceil(t*a/8);for(e[e.length-1]<<=8*m,l=0;l<a;l++){if(0===d&&(f=e[c++],d=32),d>=t)o=f>>>d-t&u,d-=t;else{var g=t-d;o=(f&u)<<g&u,o+=(f=e[c++])>>>(d=32-g)}n[l]=o<h?i+o*r:s}return n},t),w=(l=function(e,t,a,i,r,n,s,l){var o,f,u,c,d,h=(1<<a)-1,m=0,g=0,p=4*e.length-Math.ceil(a*i/8);if(e[e.length-1]<<=8*p,r)for(o=0;o<i;o++)0===g&&(u=e[m++],g=32),g>=a?(f=u>>>g-a&h,g-=a):(f=(u&h)<<(c=a-g)&h,f+=(u=e[m++])>>>(g=32-c)),t[o]=r[f];else for(d=Math.ceil((l-n)/s),o=0;o<i;o++)0===g&&(u=e[m++],g=32),g>=a?(f=u>>>g-a&h,g-=a):(f=(u&h)<<(c=a-g)&h,f+=(u=e[m++])>>>(g=32-c)),t[o]=f<d?n+f*s:l},o=function(e,t,a,i,r,n){var s,l=(1<<t)-1,o=0,f=0,u=0,c=0,d=0,h=[],m=4*e.length-Math.ceil(t*a/8);e[e.length-1]<<=8*m;var g=Math.ceil((n-i)/r);for(f=0;f<a;f++)0===c&&(s=e[o++],c=32),c>=t?(d=s>>>c-t&l,c-=t):(d=(s&l)<<(u=t-c)&l,d+=(s=e[o++])>>>(c=32-u)),h[f]=d<g?i+d*r:n;return h.unshift(i),h},f=function(e,t,a,i,r,n,s,l){var o,f,u,c,d=(1<<a)-1,h=0,m=0,g=0;if(r)for(o=0;o<i;o++)0===m&&(u=e[h++],m=32,g=0),m>=a?(f=u>>>g&d,m-=a,g+=a):(f=u>>>g&d,m=32-(c=a-m),f|=((u=e[h++])&(1<<c)-1)<<a-c,g=c),t[o]=r[f];else{var p=Math.ceil((l-n)/s);for(o=0;o<i;o++)0===m&&(u=e[h++],m=32,g=0),m>=a?(f=u>>>g&d,m-=a,g+=a):(f=u>>>g&d,m=32-(c=a-m),f|=((u=e[h++])&(1<<c)-1)<<a-c,g=c),t[o]=f<p?n+f*s:l}return t},u=function(e,t,a,i,r,n){var s,l=(1<<t)-1,o=0,f=0,u=0,c=0,d=0,h=0,m=[],g=Math.ceil((n-i)/r);for(f=0;f<a;f++)0===c&&(s=e[o++],c=32,h=0),c>=t?(d=s>>>h&l,c-=t,h+=t):(d=s>>>h&l,c=32-(u=t-c),d|=((s=e[o++])&(1<<u)-1)<<t-u,h=u),m[f]=d<g?i+d*r:n;return m.unshift(i),m},c=function(e,t,a,i){var r,n,s,l,o=(1<<a)-1,f=0,u=0,c=4*e.length-Math.ceil(a*i/8);for(e[e.length-1]<<=8*c,r=0;r<i;r++)0===u&&(s=e[f++],u=32),u>=a?(n=s>>>u-a&o,u-=a):(n=(s&o)<<(l=a-u)&o,n+=(s=e[f++])>>>(u=32-l)),t[r]=n;return t},d=function(e,t,a,i){var r,n,s,l,o=(1<<a)-1,f=0,u=0,c=0;for(r=0;r<i;r++)0===u&&(s=e[f++],u=32,c=0),u>=a?(n=s>>>c&o,u-=a,c+=a):(n=s>>>c&o,u=32-(l=a-u),n|=((s=e[f++])&(1<<l)-1)<<a-l,c=l),t[r]=n;return t},h={HUFFMAN_LUT_BITS_MAX:12,computeChecksumFletcher32:function(e){for(var t=65535,a=65535,i=e.length,r=Math.floor(i/2),n=0;r;){var s=r>=359?359:r;r-=s;do{t+=e[n++]<<8,a+=t+=e[n++]}while(--s);t=(65535&t)+(t>>>16),a=(65535&a)+(a>>>16)}return 1&i&&(a+=t+=e[n]<<8),((a=(65535&a)+(a>>>16))<<16|(t=(65535&t)+(t>>>16)))>>>0},readHeaderInfo:function(e,t){var a=t.ptr,i=new Uint8Array(e,a,6),r={};if(r.fileIdentifierString=String.fromCharCode.apply(null,i),0!==r.fileIdentifierString.lastIndexOf("Lerc2",0))throw"Unexpected file identifier string (expect Lerc2 ): "+r.fileIdentifierString;a+=6;var n,s=new DataView(e,a,8),l=s.getInt32(0,!0);if(r.fileVersion=l,a+=4,l>=3&&(r.checksum=s.getUint32(4,!0),a+=4),s=new DataView(e,a,12),r.height=s.getUint32(0,!0),r.width=s.getUint32(4,!0),a+=8,l>=4?(r.numDims=s.getUint32(8,!0),a+=4):r.numDims=1,s=new DataView(e,a,40),r.numValidPixel=s.getUint32(0,!0),r.microBlockSize=s.getInt32(4,!0),r.blobSize=s.getInt32(8,!0),r.imageType=s.getInt32(12,!0),r.maxZError=s.getFloat64(16,!0),r.zMin=s.getFloat64(24,!0),r.zMax=s.getFloat64(32,!0),a+=40,t.headerInfo=r,t.ptr=a,l>=3&&(n=l>=4?52:48,this.computeChecksumFletcher32(new Uint8Array(e,a-n,r.blobSize-14))!==r.checksum))throw"Checksum failed.";return!0},checkMinMaxRanges:function(e,t){var a=t.headerInfo,i=this.getDataTypeArray(a.imageType),r=a.numDims*this.getDataTypeSize(a.imageType),n=this.readSubArray(e,t.ptr,i,r),s=this.readSubArray(e,t.ptr+r,i,r);t.ptr+=2*r;var l,o=!0;for(l=0;l<a.numDims;l++)if(n[l]!==s[l]){o=!1;break}return a.minValues=n,a.maxValues=s,o},readSubArray:function(e,t,a,i){var r;if(a===Uint8Array)r=new Uint8Array(e,t,i);else{var n=new ArrayBuffer(i);new Uint8Array(n).set(new Uint8Array(e,t,i)),r=new a(n)}return r},readMask:function(e,t){var a,i,r=t.ptr,n=t.headerInfo,s=n.width*n.height,l=n.numValidPixel,o=new DataView(e,r,4),f={};if(f.numBytes=o.getUint32(0,!0),r+=4,(0===l||s===l)&&0!==f.numBytes)throw"invalid mask";if(0===l)a=new Uint8Array(Math.ceil(s/8)),f.bitset=a,i=new Uint8Array(s),t.pixels.resultMask=i,r+=f.numBytes;else if(f.numBytes>0){a=new Uint8Array(Math.ceil(s/8));var u=(o=new DataView(e,r,f.numBytes)).getInt16(0,!0),c=2,d=0,h=0;do{if(u>0)for(;u--;)a[d++]=o.getUint8(c++);else for(h=o.getUint8(c++),u=-u;u--;)a[d++]=h;u=o.getInt16(c,!0),c+=2}while(c<f.numBytes);if(-32768!==u||d<a.length)throw"Unexpected end of mask RLE encoding";i=new Uint8Array(s);var m=0,g=0;for(g=0;g<s;g++)7&g?(m=a[g>>3],m<<=7&g):m=a[g>>3],128&m&&(i[g]=1);t.pixels.resultMask=i,f.bitset=a,r+=f.numBytes}return t.ptr=r,t.mask=f,!0},readDataOneSweep:function(e,t,a){var i,r=t.ptr,n=t.headerInfo,s=n.numDims,l=n.width*n.height,o=n.imageType,f=n.numValidPixel*h.getDataTypeSize(o)*s,u=t.pixels.resultMask;if(a===Uint8Array)i=new Uint8Array(e,r,f);else{var c=new ArrayBuffer(f);new Uint8Array(c).set(new Uint8Array(e,r,f)),i=new a(c)}if(i.length===l*s)t.pixels.resultPixels=i;else{t.pixels.resultPixels=new a(l*s);var d=0,m=0,g=0,p=0;if(s>1)for(g=0;g<s;g++)for(p=g*l,m=0;m<l;m++)u[m]&&(t.pixels.resultPixels[p+m]=i[d++]);else for(m=0;m<l;m++)u[m]&&(t.pixels.resultPixels[m]=i[d++])}return r+=f,t.ptr=r,!0},readHuffmanTree:function(e,t){var a=this.HUFFMAN_LUT_BITS_MAX,i=new DataView(e,t.ptr,16);if(t.ptr+=16,i.getInt32(0,!0)<2)throw"unsupported Huffman version";var r=i.getInt32(4,!0),n=i.getInt32(8,!0),s=i.getInt32(12,!0);if(n>=s)return!1;var l=new Uint32Array(s-n);h.decodeBits(e,t,l);var o,f,u,c,d=[];for(o=n;o<s;o++)d[f=o-(o<r?0:r)]={first:l[o-n],second:null};var g=e.byteLength-t.ptr,p=Math.ceil(g/4),x=new ArrayBuffer(4*p);new Uint8Array(x).set(new Uint8Array(e,t.ptr,g));var w,k=new Uint32Array(x),y=0,I=0;for(w=k[0],o=n;o<s;o++)(c=d[f=o-(o<r?0:r)].first)>0&&(d[f].second=w<<y>>>32-c,32-y>=c?32===(y+=c)&&(y=0,w=k[++I]):(y+=c-32,w=k[++I],d[f].second|=w>>>32-y));var v=0,b=0,U=new m;for(o=0;o<d.length;o++)void 0!==d[o]&&(v=Math.max(v,d[o].first));b=v>=a?a:v,v>=30&&console.log("WARning, large NUM LUT BITS IS "+v);var T,M,V,A,B,D=[];for(o=n;o<s;o++)if((c=d[f=o-(o<r?0:r)].first)>0)if(T=[c,f],c<=b)for(M=d[f].second<<b-c,V=1<<b-c,u=0;u<V;u++)D[M|u]=T;else for(M=d[f].second,B=U,A=c-1;A>=0;A--)M>>>A&1?(B.right||(B.right=new m),B=B.right):(B.left||(B.left=new m),B=B.left),0!==A||B.val||(B.val=T[1]);return{decodeLut:D,numBitsLUTQick:b,numBitsLUT:v,tree:U,stuffedData:k,srcPtr:I,bitPos:y}},readHuffman:function(e,t,a){var i,r,n,s,l,o,f,u,c,d=t.headerInfo,h=d.numDims,m=t.headerInfo.height,g=t.headerInfo.width,p=g*m,x=this.readHuffmanTree(e,t),w=x.decodeLut,k=x.tree,y=x.stuffedData,I=x.srcPtr,v=x.bitPos,b=x.numBitsLUTQick,U=x.numBitsLUT,T=0===t.headerInfo.imageType?128:0,M=t.pixels.resultMask,V=0;v>0&&(I++,v=0);var A,B=y[I],D=1===t.encodeMode,S=new a(p*h),P=S;for(A=0;A<d.numDims;A++){if(h>1&&(P=new a(S.buffer,p*A,p),V=0),t.headerInfo.numValidPixel===g*m)for(u=0,o=0;o<m;o++)for(f=0;f<g;f++,u++){if(r=0,l=s=B<<v>>>32-b,32-v<b&&(l=s|=y[I+1]>>>64-v-b),w[l])r=w[l][1],v+=w[l][0];else for(l=s=B<<v>>>32-U,32-v<U&&(l=s|=y[I+1]>>>64-v-U),i=k,c=0;c<U;c++)if(!(i=s>>>U-c-1&1?i.right:i.left).left&&!i.right){r=i.val,v=v+c+1;break}v>=32&&(v-=32,B=y[++I]),n=r-T,D?(n+=f>0?V:o>0?P[u-g]:V,n&=255,P[u]=n,V=n):P[u]=n}else for(u=0,o=0;o<m;o++)for(f=0;f<g;f++,u++)if(M[u]){if(r=0,l=s=B<<v>>>32-b,32-v<b&&(l=s|=y[I+1]>>>64-v-b),w[l])r=w[l][1],v+=w[l][0];else for(l=s=B<<v>>>32-U,32-v<U&&(l=s|=y[I+1]>>>64-v-U),i=k,c=0;c<U;c++)if(!(i=s>>>U-c-1&1?i.right:i.left).left&&!i.right){r=i.val,v=v+c+1;break}v>=32&&(v-=32,B=y[++I]),n=r-T,D?(f>0&&M[u-1]?n+=V:o>0&&M[u-g]?n+=P[u-g]:n+=V,n&=255,P[u]=n,V=n):P[u]=n}t.ptr=t.ptr+4*(I+1)+(v>0?4:0)}t.pixels.resultPixels=S},decodeBits:function(e,t,a,i,r){var n=t.headerInfo,s=n.fileVersion,h=0,m=new DataView(e,t.ptr,5),g=m.getUint8(0);h++;var p=g>>6,x=0===p?4:3-p,w=(32&g)>0,k=31&g,y=0;if(1===x)y=m.getUint8(h),h++;else if(2===x)y=m.getUint16(h,!0),h+=2;else{if(4!==x)throw"Invalid valid pixel count type";y=m.getUint32(h,!0),h+=4}var I,v,b,U,T,M,V,A,B,D=2*n.maxZError,S=n.numDims>1?n.maxValues[r]:n.zMax;if(w){for(t.counter.lut++,A=m.getUint8(h),h++,U=Math.ceil((A-1)*k/8),T=Math.ceil(U/4),v=new ArrayBuffer(4*T),b=new Uint8Array(v),t.ptr+=h,b.set(new Uint8Array(e,t.ptr,U)),V=new Uint32Array(v),t.ptr+=U,B=0;A-1>>>B;)B++;U=Math.ceil(y*B/8),T=Math.ceil(U/4),v=new ArrayBuffer(4*T),(b=new Uint8Array(v)).set(new Uint8Array(e,t.ptr,U)),I=new Uint32Array(v),t.ptr+=U,M=s>=3?u(V,k,A-1,i,D,S):o(V,k,A-1,i,D,S),s>=3?f(I,a,B,y,M):l(I,a,B,y,M)}else t.counter.bitstuffer++,B=k,t.ptr+=h,B>0&&(U=Math.ceil(y*B/8),T=Math.ceil(U/4),v=new ArrayBuffer(4*T),(b=new Uint8Array(v)).set(new Uint8Array(e,t.ptr,U)),I=new Uint32Array(v),t.ptr+=U,s>=3?null==i?d(I,a,B,y):f(I,a,B,y,!1,i,D,S):null==i?c(I,a,B,y):l(I,a,B,y,!1,i,D,S))},readTiles:function(e,t,a){var i=t.headerInfo,r=i.width,n=i.height,s=i.microBlockSize,l=i.imageType,o=h.getDataTypeSize(l),f=Math.ceil(r/s),u=Math.ceil(n/s);t.pixels.numBlocksY=u,t.pixels.numBlocksX=f,t.pixels.ptr=0;var c,d,m,g,p,x,w,k,y=0,I=0,v=0,b=0,U=0,T=0,M=0,V=0,A=0,B=0,D=0,S=0,P=0,E=0,C=0,F=new a(s*s),N=n%s||s,O=r%s||s,R=i.numDims,L=t.pixels.resultMask,z=t.pixels.resultPixels;for(v=0;v<u;v++)for(U=v!==u-1?s:N,b=0;b<f;b++)for(B=v*r*s+b*s,D=r-(T=b!==f-1?s:O),k=0;k<R;k++){if(R>1&&(z=new a(t.pixels.resultPixels.buffer,r*n*k*o,r*n)),M=e.byteLength-t.ptr,d={},C=0,C++,A=(V=(c=new DataView(e,t.ptr,Math.min(10,M))).getUint8(0))>>6&255,(V>>2&15)!=(b*s>>3&15))throw"integrity issue";if((p=3&V)>3)throw t.ptr+=C,"Invalid block encoding ("+p+")";if(2!==p)if(0===p){if(t.counter.uncompressed++,t.ptr+=C,S=(S=U*T*o)<(P=e.byteLength-t.ptr)?S:P,m=new ArrayBuffer(S%o==0?S:S+o-S%o),new Uint8Array(m).set(new Uint8Array(e,t.ptr,S)),g=new a(m),E=0,L)for(y=0;y<U;y++){for(I=0;I<T;I++)L[B]&&(z[B]=g[E++]),B++;B+=D}else for(y=0;y<U;y++){for(I=0;I<T;I++)z[B++]=g[E++];B+=D}t.ptr+=E*o}else if(x=h.getDataTypeUsed(l,A),w=h.getOnePixel(d,C,x,c),C+=h.getDataTypeSize(x),3===p)if(t.ptr+=C,t.counter.constantoffset++,L)for(y=0;y<U;y++){for(I=0;I<T;I++)L[B]&&(z[B]=w),B++;B+=D}else for(y=0;y<U;y++){for(I=0;I<T;I++)z[B++]=w;B+=D}else if(t.ptr+=C,h.decodeBits(e,t,F,w,k),C=0,L)for(y=0;y<U;y++){for(I=0;I<T;I++)L[B]&&(z[B]=F[C++]),B++;B+=D}else for(y=0;y<U;y++){for(I=0;I<T;I++)z[B++]=F[C++];B+=D}else t.counter.constant++,t.ptr+=C}},formatFileInfo:function(e){return{fileIdentifierString:e.headerInfo.fileIdentifierString,fileVersion:e.headerInfo.fileVersion,imageType:e.headerInfo.imageType,height:e.headerInfo.height,width:e.headerInfo.width,numValidPixel:e.headerInfo.numValidPixel,microBlockSize:e.headerInfo.microBlockSize,blobSize:e.headerInfo.blobSize,maxZError:e.headerInfo.maxZError,pixelType:h.getPixelType(e.headerInfo.imageType),eofOffset:e.eofOffset,mask:e.mask?{numBytes:e.mask.numBytes}:null,pixels:{numBlocksX:e.pixels.numBlocksX,numBlocksY:e.pixels.numBlocksY,maxValue:e.headerInfo.zMax,minValue:e.headerInfo.zMin,noDataValue:e.noDataValue}}},constructConstantSurface:function(e){var t=e.headerInfo.zMax,a=e.headerInfo.numDims,i=e.headerInfo.height*e.headerInfo.width,r=i*a,n=0,s=0,l=0,o=e.pixels.resultMask;if(o)if(a>1)for(n=0;n<a;n++)for(l=n*i,s=0;s<i;s++)o[s]&&(e.pixels.resultPixels[l+s]=t);else for(s=0;s<i;s++)o[s]&&(e.pixels.resultPixels[s]=t);else if(e.pixels.resultPixels.fill)e.pixels.resultPixels.fill(t);else for(s=0;s<r;s++)e.pixels.resultPixels[s]=t},getDataTypeArray:function(e){var t;switch(e){case 0:t=Int8Array;break;case 1:t=Uint8Array;break;case 2:t=Int16Array;break;case 3:t=Uint16Array;break;case 4:t=Int32Array;break;case 5:t=Uint32Array;break;case 6:default:t=Float32Array;break;case 7:t=Float64Array}return t},getPixelType:function(e){var t;switch(e){case 0:t="S8";break;case 1:t="U8";break;case 2:t="S16";break;case 3:t="U16";break;case 4:t="S32";break;case 5:t="U32";break;case 6:default:t="F32";break;case 7:t="F64"}return t},isValidPixelValue:function(e,t){if(null==t)return!1;var a;switch(e){case 0:a=t>=-128&&t<=127;break;case 1:a=t>=0&&t<=255;break;case 2:a=t>=-32768&&t<=32767;break;case 3:a=t>=0&&t<=65536;break;case 4:a=t>=-2147483648&&t<=2147483647;break;case 5:a=t>=0&&t<=4294967296;break;case 6:a=t>=-34027999387901484e22&&t<=34027999387901484e22;break;case 7:a=t>=5e-324&&t<=17976931348623157e292;break;default:a=!1}return a},getDataTypeSize:function(e){var t=0;switch(e){case 0:case 1:t=1;break;case 2:case 3:t=2;break;case 4:case 5:case 6:t=4;break;case 7:t=8;break;default:t=e}return t},getDataTypeUsed:function(e,t){var a=e;switch(e){case 2:case 4:a=e-t;break;case 3:case 5:a=e-2*t;break;case 6:a=0===t?e:1===t?2:1;break;case 7:a=0===t?e:e-2*t+1;break;default:a=e}return a},getOnePixel:function(e,t,a,i){var r=0;switch(a){case 0:r=i.getInt8(t);break;case 1:r=i.getUint8(t);break;case 2:r=i.getInt16(t,!0);break;case 3:r=i.getUint16(t,!0);break;case 4:r=i.getInt32(t,!0);break;case 5:r=i.getUInt32(t,!0);break;case 6:r=i.getFloat32(t,!0);break;case 7:r=i.getFloat64(t,!0);break;default:throw"the decoder does not understand this pixel type"}return r}},m=function(e,t,a){this.val=e,this.left=t,this.right=a},{decode:function(e,t){var a=(t=t||{}).noDataValue,i=0,r={};r.ptr=t.inputOffset||0,r.pixels={},h.readHeaderInfo(e,r);var n=r.headerInfo,s=n.fileVersion,l=h.getDataTypeArray(n.imageType);h.readMask(e,r),n.numValidPixel===n.width*n.height||r.pixels.resultMask||(r.pixels.resultMask=t.maskData);var o,f=n.width*n.height;if(r.pixels.resultPixels=new l(f*n.numDims),r.counter={onesweep:0,uncompressed:0,lut:0,bitstuffer:0,constant:0,constantoffset:0},0!==n.numValidPixel)if(n.zMax===n.zMin)h.constructConstantSurface(r);else if(s>=4&&h.checkMinMaxRanges(e,r))h.constructConstantSurface(r);else{var u=new DataView(e,r.ptr,2),c=u.getUint8(0);if(r.ptr++,c)h.readDataOneSweep(e,r,l);else if(s>1&&n.imageType<=1&&Math.abs(n.maxZError-.5)<1e-5){var d=u.getUint8(1);if(r.ptr++,r.encodeMode=d,d>2||s<4&&d>1)throw"Invalid Huffman flag "+d;d?h.readHuffman(e,r,l):h.readTiles(e,r,l)}else h.readTiles(e,r,l)}r.eofOffset=r.ptr,t.inputOffset?(o=r.headerInfo.blobSize+t.inputOffset-r.ptr,Math.abs(o)>=1&&(r.eofOffset=t.inputOffset+r.headerInfo.blobSize)):(o=r.headerInfo.blobSize-r.ptr,Math.abs(o)>=1&&(r.eofOffset=r.headerInfo.blobSize));var m={width:n.width,height:n.height,pixelData:r.pixels.resultPixels,minValue:n.zMin,maxValue:n.zMax,validPixelCount:n.numValidPixel,dimCount:n.numDims,dimStats:{minValues:n.minValues,maxValues:n.maxValues},maskData:r.pixels.resultMask};if(r.pixels.resultMask&&h.isValidPixelValue(n.imageType,a)){var g=r.pixels.resultMask;for(i=0;i<f;i++)g[i]||(m.pixelData[i]=a);m.noDataValue=a}return r.noDataValue=a,t.returnFileInfo&&(m.fileInfo=h.formatFileInfo(r)),m},getBandCount:function(e){for(var t=0,a=0,i={ptr:0,pixels:{}};a<e.byteLength-58;)h.readHeaderInfo(e,i),a+=i.headerInfo.blobSize,t++,i.ptr=a;return t}}),k=(g=new ArrayBuffer(4),p=new Uint8Array(g),new Uint32Array(g)[0]=1,1===p[0]),y={decode:function(e,t){if(!k)throw"Big endian system is not supported.";var a,i,r=(t=t||{}).inputOffset||0,n=new Uint8Array(e,r,10),s=String.fromCharCode.apply(null,n);if("CntZImage"===s.trim())a=x,i=1;else{if("Lerc2"!==s.substring(0,5))throw"Unexpected file identifier string: "+s;a=w,i=2}for(var l,o,f,u,c,d,h=0,m=e.byteLength-10,g=[],p={width:0,height:0,pixels:[],pixelType:t.pixelType,mask:null,statistics:[]};r<m;){var y=a.decode(e,{inputOffset:r,encodedMaskData:l,maskData:f,returnMask:0===h,returnEncodedMask:0===h,returnFileInfo:!0,pixelType:t.pixelType||null,noDataValue:t.noDataValue||null});r=y.fileInfo.eofOffset,0===h&&(l=y.encodedMaskData,f=y.maskData,p.width=y.width,p.height=y.height,p.dimCount=y.dimCount||1,p.pixelType=y.pixelType||y.fileInfo.pixelType,p.mask=y.maskData),i>1&&y.fileInfo.mask&&y.fileInfo.mask.numBytes>0&&g.push(y.maskData),h++,p.pixels.push(y.pixelData),p.statistics.push({minValue:y.minValue,maxValue:y.maxValue,noDataValue:y.noDataValue,dimStats:y.dimStats})}if(i>1&&g.length>1){for(d=p.width*p.height,p.bandMasks=g,(f=new Uint8Array(d)).set(g[0]),u=1;u<g.length;u++)for(o=g[u],c=0;c<d;c++)f[c]=f[c]&o[c];p.maskData=f}return p}};e.exports?e.exports=y:this.Lerc=y}()}));return f((function(t,a){if(t.encoding===p.LERC){var i;try{i=v.decode(t.heightmap)}catch(e){throw new r.RuntimeError(e)}if(i.statistics[0].minValue===Number.MAX_VALUE)throw new r.RuntimeError("Invalid tile data");t.heightmap=i.pixels[0],t.width=i.width,t.height=i.height}t.ellipsoid=e.Ellipsoid.clone(t.ellipsoid),t.rectangle=e.Rectangle.clone(t.rectangle);var n=x.computeVertices(t),s=n.vertices;return a.push(s.buffer),{vertices:s.buffer,numberOfAttributes:n.encoding.stride,minimumHeight:n.minimumHeight,maximumHeight:n.maximumHeight,gridWidth:t.width,gridHeight:t.height,boundingSphere3D:n.boundingSphere3D,orientedBoundingBox:n.orientedBoundingBox,occludeePointInScaledSpace:n.occludeePointInScaledSpace,encoding:n.encoding,westIndicesSouthToNorth:n.westIndicesSouthToNorth,southIndicesEastToWest:n.southIndicesEastToWest,eastIndicesNorthToSouth:n.eastIndicesNorthToSouth,northIndicesWestToEast:n.northIndicesWestToEast}}))}));
    4.