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createVectorTileClampedPolylines.js

createVectorTileClampedPolylines.js 6.6 KB
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  1. /**
    2. 

  2.  * @license
    3. 

  3.  * Cesium - https://github.com/CesiumGS/cesium
    4. 

  4.  * Version 1.99
    5. 

  5.  *
    6. 

  6.  * Copyright 2011-2022 Cesium Contributors
    7. 

  7.  *
    8. 

  8.  * Licensed under the Apache License, Version 2.0 (the "License");
    9. 

  9.  * you may not use this file except in compliance with the License.
    10. 

  10.  * You may obtain a copy of the License at
    11. 

  11.  *
    12. 

  12.  * http://www.apache.org/licenses/LICENSE-2.0
    13. 

  13.  *
    14. 

  14.  * Unless required by applicable law or agreed to in writing, software
    15. 

  15.  * distributed under the License is distributed on an "AS IS" BASIS,
    16. 

  16.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    17. 

  17.  * See the License for the specific language governing permissions and
    18. 

  18.  * limitations under the License.
    19. 

  19.  *
    20. 

  20.  * Columbus View (Pat. Pend.)
    21. 

  21.  *
    22. 

  22.  * Portions licensed separately.
    23. 

  23.  * See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
    24. 

  24.  */
    25. 

  25. define(["./AttributeCompression-5b18be52","./Matrix3-edb29a7e","./combine-462d91dd","./IndexDatatype-3a8ea78f","./Math-a304e2d6","./Matrix2-7a2bab7e","./createTaskProcessorWorker","./ComponentDatatype-e86a9f87","./defaultValue-135942ca","./WebGLConstants-fcb70ee3","./RuntimeError-f0dada00"],(function(t,e,a,s,n,r,i,o,d,l,c){"use strict";const f=32767,u=Math.cos(n.CesiumMath.toRadians(150)),h=new e.Cartographic,C=new e.Cartesian3;const p=new e.Cartographic,m=new e.Cartographic;function b(t){const e=8*t,a=3*e,n=4*e;this.startEllipsoidNormals=new Float32Array(a),this.endEllipsoidNormals=new Float32Array(a),this.startPositionAndHeights=new Float32Array(n),this.startFaceNormalAndVertexCornerIds=new Float32Array(n),this.endPositionAndHeights=new Float32Array(n),this.endFaceNormalAndHalfWidths=new Float32Array(n),this.vertexBatchIds=new Uint16Array(e),this.indices=s.IndexDatatype.createTypedArray(e,36*t),this.vec3Offset=0,this.vec4Offset=0,this.batchIdOffset=0,this.indexOffset=0,this.volumeStartIndex=0}const A=new e.Cartesian3,w=new e.Cartesian3;function g(t,a,s,n,r){const i=e.Cartesian3.subtract(s,a,w);let o=e.Cartesian3.subtract(a,t,A);return e.Cartesian3.normalize(i,i),e.Cartesian3.normalize(o,o),e.Cartesian3.dot(i,o)<u&&(o=e.Cartesian3.multiplyByScalar(o,-1,A)),e.Cartesian3.add(i,o,r),e.Cartesian3.equals(r,e.Cartesian3.ZERO)&&(r=e.Cartesian3.subtract(t,a)),e.Cartesian3.cross(r,n,r),e.Cartesian3.cross(n,r,r),e.Cartesian3.normalize(r,r),r}const y=[0,2,6,0,6,4,0,1,3,0,3,2,0,4,5,0,5,1,5,3,1,5,7,3,7,5,4,7,4,6,7,6,2,7,2,3],N=y.length,k=new e.Cartesian3,x=new e.Cartesian3,I=new e.Cartesian3,E=new e.Cartesian3,F=new e.Cartesian3;b.prototype.addVolume=function(t,a,s,n,r,i,o,d,l,c){let f=e.Cartesian3.add(a,l,k);const u=c.geodeticSurfaceNormal(f,x);f=e.Cartesian3.add(s,l,k);const h=c.geodeticSurfaceNormal(f,E),C=g(t,a,s,u,I),p=g(n,s,a,h,F),m=this.startEllipsoidNormals,b=this.endEllipsoidNormals,A=this.startPositionAndHeights,w=this.startFaceNormalAndVertexCornerIds,H=this.endPositionAndHeights,O=this.endFaceNormalAndHalfWidths,P=this.vertexBatchIds;let v,D=this.batchIdOffset,M=this.vec3Offset,S=this.vec4Offset;for(v=0;v<8;v++)e.Cartesian3.pack(u,m,M),e.Cartesian3.pack(h,b,M),e.Cartesian3.pack(a,A,S),A[S+3]=r,e.Cartesian3.pack(s,H,S),H[S+3]=i,e.Cartesian3.pack(C,w,S),w[S+3]=v,e.Cartesian3.pack(p,O,S),O[S+3]=o,P[D++]=d,M+=3,S+=4;this.batchIdOffset=D,this.vec3Offset=M,this.vec4Offset=S;const R=this.indices,U=this.volumeStartIndex,B=this.indexOffset;for(v=0;v<N;v++)R[B+v]=y[v]+U;this.volumeStartIndex+=8,this.indexOffset+=N};const H=new r.Rectangle,O=new e.Ellipsoid,P=new e.Cartesian3,v=new e.Cartesian3,D=new e.Cartesian3,M=new e.Cartesian3,S=new e.Cartesian3;return i((function(i,o){const d=new Uint16Array(i.positions),l=new Uint16Array(i.widths),c=new Uint32Array(i.counts),u=new Uint16Array(i.batchIds),A=H,w=O,g=P,y=new Float64Array(i.packedBuffer);let N=0;const k=y[N++],x=y[N++];let I;r.Rectangle.unpack(y,N,A),N+=r.Rectangle.packedLength,e.Ellipsoid.unpack(y,N,w),N+=e.Ellipsoid.packedLength,e.Cartesian3.unpack(y,N,g);let E=d.length/3;const F=d.subarray(0,E),R=d.subarray(E,2*E),U=d.subarray(2*E,3*E);t.AttributeCompression.zigZagDeltaDecode(F,R,U),function(t,a,s,n){const r=n.length,i=t.length,o=new Uint8Array(i),d=p,l=m;let c=0;for(let s=0;s<r;s++){const r=n[s];let i=r;for(let s=1;s<r;s++){const n=c+s,r=n-1;l.longitude=t[n],l.latitude=a[n],d.longitude=t[r],d.latitude=a[r],e.Cartographic.equals(l,d)&&(i--,o[r]=1)}n[s]=i,c+=r}let f=0;for(let e=0;e<i;e++)1!==o[e]&&(t[f]=t[e],a[f]=a[e],s[f]=s[e],f++)}(F,R,U,c);const B=c.length;let V=0;for(I=0;I<B;I++){V+=c[I]-1}const T=new b(V),W=function(t,a,s,r,i,o,d){const l=t.length,c=new Float64Array(3*l);for(let u=0;u<l;++u){const l=t[u],p=a[u],m=s[u],b=n.CesiumMath.lerp(r.west,r.east,l/f),A=n.CesiumMath.lerp(r.south,r.north,p/f),w=n.CesiumMath.lerp(i,o,m/f),g=e.Cartographic.fromRadians(b,A,w,h),y=d.cartographicToCartesian(g,C);e.Cartesian3.pack(y,c,3*u)}return c}(F,R,U,A,k,x,w);E=F.length;const z=new Float32Array(3*E);for(I=0;I<E;++I)z[3*I]=W[3*I]-g.x,z[3*I+1]=W[3*I+1]-g.y,z[3*I+2]=W[3*I+2]-g.z;let q=0,L=0;for(I=0;I<B;I++){const t=c[I]-1,a=.5*l[I],s=u[I],r=q;for(let i=0;i<t;i++){const o=e.Cartesian3.unpack(z,q,D),d=e.Cartesian3.unpack(z,q+3,M);let l=U[L],c=U[L+1];l=n.CesiumMath.lerp(k,x,l/f),c=n.CesiumMath.lerp(k,x,c/f),L++;let u=v,h=S;if(0===i){const a=r+3*t,s=e.Cartesian3.unpack(z,a,v);if(e.Cartesian3.equals(s,o))e.Cartesian3.unpack(z,a-3,u);else{const t=e.Cartesian3.subtract(o,d,v);u=e.Cartesian3.add(t,o,v)}}else e.Cartesian3.unpack(z,q-3,u);if(i===t-1){const t=e.Cartesian3.unpack(z,r,S);if(e.Cartesian3.equals(t,d))e.Cartesian3.unpack(z,r+3,h);else{const t=e.Cartesian3.subtract(d,o,S);h=e.Cartesian3.add(t,d,S)}}else e.Cartesian3.unpack(z,q+6,h);T.addVolume(u,o,d,h,l,c,a,s,g,w),q+=3}q+=3,L++}const _=T.indices;o.push(T.startEllipsoidNormals.buffer),o.push(T.endEllipsoidNormals.buffer),o.push(T.startPositionAndHeights.buffer),o.push(T.startFaceNormalAndVertexCornerIds.buffer),o.push(T.endPositionAndHeights.buffer),o.push(T.endFaceNormalAndHalfWidths.buffer),o.push(T.vertexBatchIds.buffer),o.push(_.buffer);let G={indexDatatype:2===_.BYTES_PER_ELEMENT?s.IndexDatatype.UNSIGNED_SHORT:s.IndexDatatype.UNSIGNED_INT,startEllipsoidNormals:T.startEllipsoidNormals.buffer,endEllipsoidNormals:T.endEllipsoidNormals.buffer,startPositionAndHeights:T.startPositionAndHeights.buffer,startFaceNormalAndVertexCornerIds:T.startFaceNormalAndVertexCornerIds.buffer,endPositionAndHeights:T.endPositionAndHeights.buffer,endFaceNormalAndHalfWidths:T.endFaceNormalAndHalfWidths.buffer,vertexBatchIds:T.vertexBatchIds.buffer,indices:_.buffer};if(i.keepDecodedPositions){const t=function(t){const e=t.length,a=new Uint32Array(e+1);let s=0;for(let n=0;n<e;++n)a[n]=s,s+=t[n];return a[e]=s,a}(c);o.push(W.buffer,t.buffer),G=a.combine(G,{decodedPositions:W.buffer,decodedPositionOffsets:t.buffer})}return G}))}));
    26.