createVectorTilePolygons.js

/**
 * Cesium - https://github.com/CesiumGS/cesium
 *
 * Copyright 2011-2020 Cesium Contributors
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Columbus View (Pat. Pend.)
 *
 * Portions licensed separately.
 * See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
 */
define(["./when-60b00257","./Check-4274a1fd","./Math-9d37f659","./Cartesian2-2951f601","./Transforms-53ff6d12","./RuntimeError-027c380a","./WebGLConstants-779bf0bc","./AttributeCompression-a0720a96","./IndexDatatype-527cbd94","./IntersectionTests-57fe18b2","./Plane-df4a621e","./createTaskProcessorWorker","./EllipsoidTangentPlane-f9b097b8","./OrientedBoundingBox-23288f54","./Color-9e90e2b0"],function(Le,e,Oe,Ue,a,r,n,Pe,Fe,t,i,o,s,Se,Re){"use strict";var De=new Ue.Cartesian3,Me=new Ue.Ellipsoid,_e=new Ue.Rectangle,Ge={min:void 0,max:void 0,indexBytesPerElement:void 0};function Ye(e,a,r){var n=a.length,t=2+n*Se.OrientedBoundingBox.packedLength+1+function(e){for(var a=e.length,r=0,n=0;n<a;++n)r+=Re.Color.packedLength+3+e[n].batchIds.length;return r}(r),i=new Float64Array(t),o=0;i[o++]=e,i[o++]=n;for(var s=0;s<n;++s)Se.OrientedBoundingBox.pack(a[s],i,o),o+=Se.OrientedBoundingBox.packedLength;var f=r.length;i[o++]=f;for(var d=0;d<f;++d){var c=r[d];Re.Color.pack(c.color,i,o),o+=Re.Color.packedLength,i[o++]=c.offset,i[o++]=c.count;var u=c.batchIds,h=u.length;i[o++]=h;for(var l=0;l<h;++l)i[o++]=u[l]}return i}var Ve=new Ue.Cartesian3,He=new Ue.Cartesian3,We=new Ue.Cartesian3,ze=new Ue.Cartesian3,Ze=new Ue.Cartesian3,je=new Ue.Cartographic,qe=new Ue.Rectangle;return o(function(e,a){var r,n,t,i;r=e.packedBuffer,n=new Float64Array(r),t=0,Ge.indexBytesPerElement=n[t++],Ge.min=n[t++],Ge.max=n[t++],Ue.Cartesian3.unpack(n,t,De),t+=Ue.Cartesian3.packedLength,Ue.Ellipsoid.unpack(n,t,Me),t+=Ue.Ellipsoid.packedLength,Ue.Rectangle.unpack(n,t,_e),i=new(2===Ge.indexBytesPerElement?Uint16Array:Uint32Array)(e.indices);var o,s,f,d=new Uint16Array(e.positions),c=new Uint32Array(e.counts),u=new Uint32Array(e.indexCounts),h=new Uint32Array(e.batchIds),l=new Uint32Array(e.batchTableColors),g=new Array(c.length),p=De,b=Me,C=_e,y=Ge.min,I=Ge.max,m=e.minimumHeights,v=e.maximumHeights;Le.defined(m)&&Le.defined(v)&&(m=new Float32Array(m),v=new Float32Array(v));var w=d.length/2,x=d.subarray(0,w),A=d.subarray(w,2*w);Pe.AttributeCompression.zigZagDeltaDecode(x,A);var E=new Float64Array(3*w);for(o=0;o<w;++o){var N=x[o],T=A[o],k=Oe.CesiumMath.lerp(C.west,C.east,N/32767),B=Oe.CesiumMath.lerp(C.south,C.north,T/32767),L=Ue.Cartographic.fromRadians(k,B,0,je),O=b.cartographicToCartesian(L,Ve);Ue.Cartesian3.pack(O,E,3*o)}var U=c.length,P=new Array(U),F=new Array(U),S=0,R=0;for(o=0;o<U;++o)P[o]=S,F[o]=R,S+=c[o],R+=u[o];var D,M=new Float32Array(3*w*2),_=new Uint16Array(2*w),G=new Uint32Array(F.length),Y=new Uint32Array(u.length),V=[],H={};for(o=0;o<U;++o)f=l[o],Le.defined(H[f])?(H[f].positionLength+=c[o],H[f].indexLength+=u[o],H[f].batchIds.push(o)):H[f]={positionLength:c[o],indexLength:u[o],offset:0,indexOffset:0,batchIds:[o]};var W=0,z=0;for(f in H)if(H.hasOwnProperty(f)){(D=H[f]).offset=W,D.indexOffset=z;var Z=2*D.positionLength,j=2*D.indexLength+6*D.positionLength;W+=Z,z+=j,D.indexLength=j}var q=[];for(f in H)H.hasOwnProperty(f)&&(D=H[f],q.push({color:Re.Color.fromRgba(parseInt(f)),offset:D.indexOffset,count:D.indexLength,batchIds:D.batchIds}));for(o=0;o<U;++o){var J=(D=H[f=l[o]]).offset,K=3*J,Q=J,X=P[o],$=c[o],ee=h[o],ae=y,re=I;Le.defined(m)&&Le.defined(v)&&(ae=m[o],re=v[o]);var ne=Number.POSITIVE_INFINITY,te=Number.NEGATIVE_INFINITY,ie=Number.POSITIVE_INFINITY,oe=Number.NEGATIVE_INFINITY;for(s=0;s<$;++s){var se=Ue.Cartesian3.unpack(E,3*X+3*s,Ve);b.scaleToGeodeticSurface(se,se);var fe=b.cartesianToCartographic(se,je),de=fe.latitude,ce=fe.longitude;ne=Math.min(de,ne),te=Math.max(de,te),ie=Math.min(ce,ie),oe=Math.max(ce,oe);var ue=b.geodeticSurfaceNormal(se,He),he=Ue.Cartesian3.multiplyByScalar(ue,ae,We),le=Ue.Cartesian3.add(se,he,ze);he=Ue.Cartesian3.multiplyByScalar(ue,re,he);var ge=Ue.Cartesian3.add(se,he,Ze);Ue.Cartesian3.subtract(ge,p,ge),Ue.Cartesian3.subtract(le,p,le),Ue.Cartesian3.pack(ge,M,K),Ue.Cartesian3.pack(le,M,K+3),_[Q]=ee,_[Q+1]=ee,K+=6,Q+=2}(C=qe).west=ie,C.east=oe,C.south=ne,C.north=te,g[o]=Se.OrientedBoundingBox.fromRectangle(C,y,I,b);var pe=D.indexOffset,be=F[o],Ce=u[o];for(G[o]=pe,s=0;s<Ce;s+=3){var ye=i[be+s]-X,Ie=i[be+s+1]-X,me=i[be+s+2]-X;V[pe++]=2*ye+J,V[pe++]=2*Ie+J,V[pe++]=2*me+J,V[pe++]=2*me+1+J,V[pe++]=2*Ie+1+J,V[pe++]=2*ye+1+J}for(s=0;s<$;++s){var ve=s,we=(s+1)%$;V[pe++]=2*ve+1+J,V[pe++]=2*we+J,V[pe++]=2*ve+J,V[pe++]=2*ve+1+J,V[pe++]=2*we+1+J,V[pe++]=2*we+J}D.offset+=2*$,D.indexOffset=pe,Y[o]=pe-G[o]}V=Fe.IndexDatatype.createTypedArray(M.length/3,V);for(var xe=q.length,Ae=0;Ae<xe;++Ae){for(var Ee=q[Ae].batchIds,Ne=0,Te=Ee.length,ke=0;ke<Te;++ke)Ne+=Y[Ee[ke]];q[Ae].count=Ne}var Be=Ye(2===V.BYTES_PER_ELEMENT?Fe.IndexDatatype.UNSIGNED_SHORT:Fe.IndexDatatype.UNSIGNED_INT,g,q);return a.push(M.buffer,V.buffer,G.buffer,Y.buffer,_.buffer,Be.buffer),{positions:M.buffer,indices:V.buffer,indexOffsets:G.buffer,indexCounts:Y.buffer,batchIds:_.buffer,packedBuffer:Be.buffer}})});