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@loaders.gl/terrain

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@loaders.gl/terrain - npm Package Compare versions

Comparing version 4.3.0-alpha.4 to 4.3.0-alpha.5

2

dist/dist.min.js

@@ -7,4 +7,4 @@ (function webpackUniversalModuleDefinition(root, factory) {

else root['loaders'] = factory();})(globalThis, function () {
"use strict";var __exports__=(()=>{var de=Object.create;var U=Object.defineProperty;var fe=Object.getOwnPropertyDescriptor;var me=Object.getOwnPropertyNames;var ge=Object.getPrototypeOf,_e=Object.prototype.hasOwnProperty;var pe=(s,e)=>()=>(e||s((e={exports:{}}).exports,e),e.exports),Ee=(s,e)=>{for(var r in e)U(s,r,{get:e[r],enumerable:!0})},q=(s,e,r,t)=>{if(e&&typeof e=="object"||typeof e=="function")for(let n of me(e))!_e.call(s,n)&&n!==r&&U(s,n,{get:()=>e[n],enumerable:!(t=fe(e,n))||t.enumerable});return s},D=(s,e,r)=>(q(s,e,"default"),r&&q(r,e,"default")),Te=(s,e,r)=>(r=s!=null?de(ge(s)):{},q(e||!s||!s.__esModule?U(r,"default",{value:s,enumerable:!0}):r,s)),xe=s=>q(U({},"__esModule",{value:!0}),s);var se=pe((Re,ne)=>{ne.exports=globalThis.loaders});var v={};Ee(v,{QuantizedMeshLoader:()=>ke,QuantizedMeshWorkerLoader:()=>te,TerrainLoader:()=>ce,TerrainWorkerLoader:()=>ee,parseTerrain:()=>le});D(v,Te(se(),1));async function J(s,e,r,t){return t._parse(s,e,r,t)}function B(...s){let e=s,r=e&&e.length>1&&e[0].constructor||null;if(!r)throw new Error('"concatenateTypedArrays" - incorrect quantity of arguments or arguments have incompatible data types');let t=e.reduce((o,a)=>o+a.length,0),n=new r(t),i=0;for(let o of e)n.set(o,i),i+=o.length;return n}function L(s){let e=1/0,r=1/0,t=1/0,n=-1/0,i=-1/0,o=-1/0,a=s.POSITION?s.POSITION.value:[],l=a&&a.length;for(let c=0;c<l;c+=3){let h=a[c],u=a[c+1],f=a[c+2];e=h<e?h:e,r=u<r?u:r,t=f<t?f:t,n=h>n?h:n,i=u>i?u:i,o=f>o?f:o}return[[e,r,t],[n,i,o]]}var ye=new Map([["centerX",Float64Array.BYTES_PER_ELEMENT],["centerY",Float64Array.BYTES_PER_ELEMENT],["centerZ",Float64Array.BYTES_PER_ELEMENT],["minHeight",Float32Array.BYTES_PER_ELEMENT],["maxHeight",Float32Array.BYTES_PER_ELEMENT],["boundingSphereCenterX",Float64Array.BYTES_PER_ELEMENT],["boundingSphereCenterY",Float64Array.BYTES_PER_ELEMENT],["boundingSphereCenterZ",Float64Array.BYTES_PER_ELEMENT],["boundingSphereRadius",Float64Array.BYTES_PER_ELEMENT],["horizonOcclusionPointX",Float64Array.BYTES_PER_ELEMENT],["horizonOcclusionPointY",Float64Array.BYTES_PER_ELEMENT],["horizonOcclusionPointZ",Float64Array.BYTES_PER_ELEMENT]]);function $(s){return s>>1^-(s&1)}function Se(s){let e=0,r={};for(let[t,n]of ye){let i=n===8?s.getFloat64:s.getFloat32;r[t]=i.call(s,e,!0),e+=n}return{header:r,headerEndPosition:e}}function Ae(s,e){let r=e,t=3,n=s.getUint32(r,!0),i=new Uint16Array(n*t);r+=Uint32Array.BYTES_PER_ELEMENT;let o=Uint16Array.BYTES_PER_ELEMENT,a=n*o,l=r,c=l+a,h=c+a,u=0,f=0,d=0;for(let g=0;g<n;g++)u+=$(s.getUint16(l+o*g,!0)),f+=$(s.getUint16(c+o*g,!0)),d+=$(s.getUint16(h+o*g,!0)),i[g]=u,i[g+n]=f,i[g+n*2]=d;return r+=a*3,{vertexData:i,vertexDataEndPosition:r}}function F(s,e,r,t,n=!0){let i;if(t===2?i=new Uint16Array(s,e,r):i=new Uint32Array(s,e,r),!n)return i;let o=0;for(let a=0;a<i.length;++a){let l=i[a];i[a]=o-l,l===0&&++o}return i}function Ie(s,e,r){let t=r,n=3,o=e.length/n>65536?Uint32Array.BYTES_PER_ELEMENT:Uint16Array.BYTES_PER_ELEMENT;t%o!==0&&(t+=o-t%o);let a=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let l=a*3,c=F(s.buffer,t,l,o);return t+=l*o,{triangleIndicesEndPosition:t,triangleIndices:c}}function be(s,e,r){let t=r,n=3,o=e.length/n>65536?Uint32Array.BYTES_PER_ELEMENT:Uint16Array.BYTES_PER_ELEMENT,a=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let l=F(s.buffer,t,a,o,!1);t+=a*o;let c=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let h=F(s.buffer,t,c,o,!1);t+=c*o;let u=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let f=F(s.buffer,t,u,o,!1);t+=u*o;let d=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let g=F(s.buffer,t,d,o,!1);return t+=d*o,{edgeIndicesEndPosition:t,westIndices:l,southIndices:h,eastIndices:f,northIndices:g}}function Me(s){return new Uint8Array(s.buffer,s.byteOffset,s.byteLength)}function Pe(s){return s.buffer.slice(s.byteOffset,s.byteOffset+s.byteLength)}function we(s,e){let r={};if(s.byteLength<=e)return{extensions:r,extensionsEndPosition:e};let t=e;for(;t<s.byteLength;){let n=s.getUint8(t,!0);t+=Uint8Array.BYTES_PER_ELEMENT;let i=s.getUint32(t,!0);t+=Uint32Array.BYTES_PER_ELEMENT;let o=new DataView(s.buffer,t,i);switch(n){case 1:{r.vertexNormals=Me(o);break}case 2:{r.waterMask=Pe(o);break}default:}t+=i}return{extensions:r,extensionsEndPosition:t}}var b={header:0,vertices:1,triangleIndices:2,edgeIndices:3,extensions:4},Be={maxDecodingStep:b.extensions};function G(s,e){let r=Object.assign({},Be,e),t=new DataView(s),{header:n,headerEndPosition:i}=Se(t);if(r.maxDecodingStep<b.vertices)return{header:n};let{vertexData:o,vertexDataEndPosition:a}=Ae(t,i);if(r.maxDecodingStep<b.triangleIndices)return{header:n,vertexData:o};let{triangleIndices:l,triangleIndicesEndPosition:c}=Ie(t,o,a);if(r.maxDecodingStep<b.edgeIndices)return{header:n,vertexData:o,triangleIndices:l};let{westIndices:h,southIndices:u,eastIndices:f,northIndices:d,edgeIndicesEndPosition:g}=be(t,o,c);if(r.maxDecodingStep<b.extensions)return{header:n,vertexData:o,triangleIndices:l,westIndices:h,northIndices:d,eastIndices:f,southIndices:u};let{extensions:m}=we(t,g);return{header:n,vertexData:o,triangleIndices:l,westIndices:h,northIndices:d,eastIndices:f,southIndices:u,extensions:m}}function Y(s,e,r,t){let n=t?Fe(t,s.POSITION.value):Le(e),i=new s.POSITION.value.constructor(n.length*6),o=new s.TEXCOORD_0.value.constructor(n.length*4),a=new e.constructor(n.length*6);for(let c=0;c<n.length;c++){let h=n[c];Ne({edge:h,edgeIndex:c,attributes:s,skirtHeight:r,newPosition:i,newTexcoord0:o,newTriangles:a})}s.POSITION.value=B(s.POSITION.value,i),s.TEXCOORD_0.value=B(s.TEXCOORD_0.value,o);let l=e instanceof Array?e.concat(a):B(e,a);return{attributes:s,triangles:l}}function Le(s){let e=[];for(let n=0;n<s.length;n+=3)e.push([s[n],s[n+1]]),e.push([s[n+1],s[n+2]]),e.push([s[n+2],s[n]]);e.sort((n,i)=>Math.min(...n)-Math.min(...i)||Math.max(...n)-Math.max(...i));let r=[],t=0;for(;t<e.length;)e[t][0]===e[t+1]?.[1]&&e[t][1]===e[t+1]?.[0]?t+=2:(r.push(e[t]),t++);return r}function Fe(s,e){s.westIndices.sort((t,n)=>e[3*t+1]-e[3*n+1]),s.eastIndices.sort((t,n)=>e[3*n+1]-e[3*t+1]),s.southIndices.sort((t,n)=>e[3*n]-e[3*t]),s.northIndices.sort((t,n)=>e[3*t]-e[3*n]);let r=[];for(let t in s){let n=s[t];for(let i=0;i<n.length-1;i++)r.push([n[i],n[i+1]])}return r}function Ne({edge:s,edgeIndex:e,attributes:r,skirtHeight:t,newPosition:n,newTexcoord0:i,newTriangles:o}){let a=r.POSITION.value.length,l=e*2,c=e*2+1;n.set(r.POSITION.value.subarray(s[0]*3,s[0]*3+3),l*3),n[l*3+2]=n[l*3+2]-t,n.set(r.POSITION.value.subarray(s[1]*3,s[1]*3+3),c*3),n[c*3+2]=n[c*3+2]-t,i.set(r.TEXCOORD_0.value.subarray(s[0]*2,s[0]*2+2),l*2),i.set(r.TEXCOORD_0.value.subarray(s[1]*2,s[1]*2+2),c*2);let h=e*2*3;o[h]=s[0],o[h+1]=a/3+c,o[h+2]=s[1],o[h+3]=a/3+c,o[h+4]=s[0],o[h+5]=a/3+l}function V(s,e={}){let{bounds:r}=e,{header:t,vertexData:n,triangleIndices:i,westIndices:o,northIndices:a,eastIndices:l,southIndices:c}=G(s,b.triangleIndices),h=i,u=Oe(n,t,r),f=L(u);if(e?.skirtHeight){let{attributes:d,triangles:g}=Y(u,h,e.skirtHeight,{westIndices:o,northIndices:a,eastIndices:l,southIndices:c});u=d,h=g}return{loaderData:{header:{}},header:{vertexCount:h.length,boundingBox:f},schema:void 0,topology:"triangle-list",mode:4,indices:{value:h,size:1},attributes:u}}function Oe(s,e,r){let{minHeight:t,maxHeight:n}=e,[i,o,a,l]=r||[0,0,1,1],c=a-i,h=l-o,u=n-t,f=s.length/3,d=new Float32Array(f*3),g=new Float32Array(f*2);for(let m=0;m<f;m++){let _=s[m]/32767,E=s[m+f]/32767,p=s[m+f*2]/32767;d[3*m+0]=_*c+i,d[3*m+1]=E*h+o,d[3*m+2]=p*u+t,g[2*m+0]=_,g[2*m+1]=E}return{POSITION:{value:d,size:3},TEXCOORD_0:{value:g,size:2}}}var N=class{constructor(e=257){this.gridSize=e;let r=e-1;if(r&r-1)throw new Error(`Expected grid size to be 2^n+1, got ${e}.`);this.numTriangles=r*r*2-2,this.numParentTriangles=this.numTriangles-r*r,this.indices=new Uint32Array(this.gridSize*this.gridSize),this.coords=new Uint16Array(this.numTriangles*4);for(let t=0;t<this.numTriangles;t++){let n=t+2,i=0,o=0,a=0,l=0,c=0,h=0;for(n&1?a=l=c=r:i=o=h=r;(n>>=1)>1;){let f=i+a>>1,d=o+l>>1;n&1?(a=i,l=o,i=c,o=h):(i=a,o=l,a=c,l=h),c=f,h=d}let u=t*4;this.coords[u+0]=i,this.coords[u+1]=o,this.coords[u+2]=a,this.coords[u+3]=l}}createTile(e){return new K(e,this)}},K=class{constructor(e,r){let t=r.gridSize;if(e.length!==t*t)throw new Error(`Expected terrain data of length ${t*t} (${t} x ${t}), got ${e.length}.`);this.terrain=e,this.martini=r,this.errors=new Float32Array(e.length),this.update()}update(){let{numTriangles:e,numParentTriangles:r,coords:t,gridSize:n}=this.martini,{terrain:i,errors:o}=this;for(let a=e-1;a>=0;a--){let l=a*4,c=t[l+0],h=t[l+1],u=t[l+2],f=t[l+3],d=c+u>>1,g=h+f>>1,m=d+g-h,_=g+c-d,E=(i[h*n+c]+i[f*n+u])/2,p=g*n+d,T=Math.abs(E-i[p]);if(o[p]=Math.max(o[p],T),a<r){let x=(h+_>>1)*n+(c+m>>1),y=(f+_>>1)*n+(u+m>>1);o[p]=Math.max(o[p],o[x],o[y])}}}getMesh(e=0){let{gridSize:r,indices:t}=this.martini,{errors:n}=this,i=0,o=0,a=r-1;t.fill(0);function l(d,g,m,_,E,p){let T=d+m>>1,x=g+_>>1;Math.abs(d-E)+Math.abs(g-p)>1&&n[x*r+T]>e?(l(E,p,d,g,T,x),l(m,_,E,p,T,x)):(t[g*r+d]=t[g*r+d]||++i,t[_*r+m]=t[_*r+m]||++i,t[p*r+E]=t[p*r+E]||++i,o++)}l(0,0,a,a,a,0),l(a,a,0,0,0,a);let c=new Uint16Array(i*2),h=new Uint32Array(o*3),u=0;function f(d,g,m,_,E,p){let T=d+m>>1,x=g+_>>1;if(Math.abs(d-E)+Math.abs(g-p)>1&&n[x*r+T]>e)f(E,p,d,g,T,x),f(m,_,E,p,T,x);else{let y=t[g*r+d]-1,S=t[_*r+m]-1,I=t[p*r+E]-1;c[2*y]=d,c[2*y+1]=g,c[2*S]=m,c[2*S+1]=_,c[2*I]=E,c[2*I+1]=p,h[u++]=y,h[u++]=S,h[u++]=I}}return f(0,0,a,a,a,0),f(a,a,0,0,0,a),{vertices:c,triangles:h}}};var O=class{constructor(e,r,t=r){this.data=e,this.width=r,this.height=t,this.coords=[],this.triangles=[],this._halfedges=[],this._candidates=[],this._queueIndices=[],this._queue=[],this._errors=[],this._rms=[],this._pending=[],this._pendingLen=0,this._rmsSum=0;let n=r-1,i=t-1,o=this._addPoint(0,0),a=this._addPoint(n,0),l=this._addPoint(0,i),c=this._addPoint(n,i),h=this._addTriangle(c,o,l,-1,-1,-1);this._addTriangle(o,c,a,h,-1,-1),this._flush()}run(e=1){for(;this.getMaxError()>e;)this.refine()}refine(){this._step(),this._flush()}getMaxError(){return this._errors[0]}getRMSD(){return this._rmsSum>0?Math.sqrt(this._rmsSum/(this.width*this.height)):0}heightAt(e,r){return this.data[this.width*r+e]}_flush(){let e=this.coords;for(let r=0;r<this._pendingLen;r++){let t=this._pending[r],n=2*this.triangles[t*3+0],i=2*this.triangles[t*3+1],o=2*this.triangles[t*3+2];this._findCandidate(e[n],e[n+1],e[i],e[i+1],e[o],e[o+1],t)}this._pendingLen=0}_findCandidate(e,r,t,n,i,o,a){let l=Math.min(e,t,i),c=Math.min(r,n,o),h=Math.max(e,t,i),u=Math.max(r,n,o),f=M(t,n,i,o,l,c),d=M(i,o,e,r,l,c),g=M(e,r,t,n,l,c),m=n-r,_=e-t,E=o-n,p=t-i,T=r-o,x=i-e,y=M(e,r,t,n,i,o),S=this.heightAt(e,r)/y,I=this.heightAt(t,n)/y,he=this.heightAt(i,o)/y,z=0,P=0,w=0,W=0;for(let k=c;k<=u;k++){let A=0;f<0&&E!==0&&(A=Math.max(A,Math.floor(-f/E))),d<0&&T!==0&&(A=Math.max(A,Math.floor(-d/T))),g<0&&m!==0&&(A=Math.max(A,Math.floor(-g/m)));let Q=f+E*A,j=d+T*A,Z=g+m*A,re=!1;for(let C=l+A;C<=h;C++){if(Q>=0&&j>=0&&Z>=0){re=!0;let ue=S*Q+I*j+he*Z,R=Math.abs(ue-this.heightAt(C,k));W+=R*R,R>z&&(z=R,P=C,w=k)}else if(re)break;Q+=E,j+=T,Z+=m}f+=p,d+=x,g+=_}(P===e&&w===r||P===t&&w===n||P===i&&w===o)&&(z=0),this._candidates[2*a]=P,this._candidates[2*a+1]=w,this._rms[a]=W,this._queuePush(a,z,W)}_step(){let e=this._queuePop(),r=e*3+0,t=e*3+1,n=e*3+2,i=this.triangles[r],o=this.triangles[t],a=this.triangles[n],l=this.coords[2*i],c=this.coords[2*i+1],h=this.coords[2*o],u=this.coords[2*o+1],f=this.coords[2*a],d=this.coords[2*a+1],g=this._candidates[2*e],m=this._candidates[2*e+1],_=this._addPoint(g,m);if(M(l,c,h,u,g,m)===0)this._handleCollinear(_,r);else if(M(h,u,f,d,g,m)===0)this._handleCollinear(_,t);else if(M(f,d,l,c,g,m)===0)this._handleCollinear(_,n);else{let E=this._halfedges[r],p=this._halfedges[t],T=this._halfedges[n],x=this._addTriangle(i,o,_,E,-1,-1,r),y=this._addTriangle(o,a,_,p,-1,x+1),S=this._addTriangle(a,i,_,T,x+2,y+1);this._legalize(x),this._legalize(y),this._legalize(S)}}_addPoint(e,r){let t=this.coords.length>>1;return this.coords.push(e,r),t}_addTriangle(e,r,t,n,i,o,a=this.triangles.length){let l=a/3;return this.triangles[a+0]=e,this.triangles[a+1]=r,this.triangles[a+2]=t,this._halfedges[a+0]=n,this._halfedges[a+1]=i,this._halfedges[a+2]=o,n>=0&&(this._halfedges[n]=a+0),i>=0&&(this._halfedges[i]=a+1),o>=0&&(this._halfedges[o]=a+2),this._candidates[2*l+0]=0,this._candidates[2*l+1]=0,this._queueIndices[l]=-1,this._rms[l]=0,this._pending[this._pendingLen++]=l,a}_legalize(e){let r=this._halfedges[e];if(r<0)return;let t=e-e%3,n=r-r%3,i=t+(e+1)%3,o=t+(e+2)%3,a=n+(r+2)%3,l=n+(r+1)%3,c=this.triangles[o],h=this.triangles[e],u=this.triangles[i],f=this.triangles[a],d=this.coords;if(!ve(d[2*c],d[2*c+1],d[2*h],d[2*h+1],d[2*u],d[2*u+1],d[2*f],d[2*f+1]))return;let g=this._halfedges[i],m=this._halfedges[o],_=this._halfedges[a],E=this._halfedges[l];this._queueRemove(t/3),this._queueRemove(n/3);let p=this._addTriangle(c,f,u,-1,_,g,t),T=this._addTriangle(f,c,h,p,m,E,n);this._legalize(p+1),this._legalize(T+2)}_handleCollinear(e,r){let t=r-r%3,n=t+(r+1)%3,i=t+(r+2)%3,o=this.triangles[i],a=this.triangles[r],l=this.triangles[n],c=this._halfedges[n],h=this._halfedges[i],u=this._halfedges[r];if(u<0){let S=this._addTriangle(e,o,a,-1,h,-1,t),I=this._addTriangle(o,e,l,S,-1,c);this._legalize(S+1),this._legalize(I+2);return}let f=u-u%3,d=f+(u+2)%3,g=f+(u+1)%3,m=this.triangles[d],_=this._halfedges[d],E=this._halfedges[g];this._queueRemove(f/3);let p=this._addTriangle(o,a,e,h,-1,-1,t),T=this._addTriangle(a,m,e,E,-1,p+1,f),x=this._addTriangle(m,l,e,_,-1,T+1),y=this._addTriangle(l,o,e,c,p+2,x+1);this._legalize(p),this._legalize(T),this._legalize(x),this._legalize(y)}_queuePush(e,r,t){let n=this._queue.length;this._queueIndices[e]=n,this._queue.push(e),this._errors.push(r),this._rmsSum+=t,this._queueUp(n)}_queuePop(){let e=this._queue.length-1;return this._queueSwap(0,e),this._queueDown(0,e),this._queuePopBack()}_queuePopBack(){let e=this._queue.pop();return this._errors.pop(),this._rmsSum-=this._rms[e],this._queueIndices[e]=-1,e}_queueRemove(e){let r=this._queueIndices[e];if(r<0){let n=this._pending.indexOf(e);if(n!==-1)this._pending[n]=this._pending[--this._pendingLen];else throw new Error("Broken triangulation (something went wrong).");return}let t=this._queue.length-1;t!==r&&(this._queueSwap(r,t),this._queueDown(r,t)||this._queueUp(r)),this._queuePopBack()}_queueLess(e,r){return this._errors[e]>this._errors[r]}_queueSwap(e,r){let t=this._queue[e],n=this._queue[r];this._queue[e]=n,this._queue[r]=t,this._queueIndices[t]=r,this._queueIndices[n]=e;let i=this._errors[e];this._errors[e]=this._errors[r],this._errors[r]=i}_queueUp(e){let r=e;for(;;){let t=r-1>>1;if(t===r||!this._queueLess(r,t))break;this._queueSwap(t,r),r=t}}_queueDown(e,r){let t=e;for(;;){let n=2*t+1;if(n>=r||n<0)break;let i=n+1,o=n;if(i<r&&this._queueLess(i,n)&&(o=i),!this._queueLess(o,t))break;this._queueSwap(t,o),t=o}return t>e}};function 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Float32Array(f*2);for(let m=0;m<f;m++){let _=s[m]/32767,E=s[m+f]/32767,p=s[m+f*2]/32767;d[3*m+0]=_*c+i,d[3*m+1]=E*h+o,d[3*m+2]=p*u+t,g[2*m+0]=_,g[2*m+1]=E}return{POSITION:{value:d,size:3},TEXCOORD_0:{value:g,size:2}}}var N=class{constructor(e=257){this.gridSize=e;let r=e-1;if(r&r-1)throw new Error(`Expected grid size to be 2^n+1, got ${e}.`);this.numTriangles=r*r*2-2,this.numParentTriangles=this.numTriangles-r*r,this.indices=new Uint32Array(this.gridSize*this.gridSize),this.coords=new Uint16Array(this.numTriangles*4);for(let t=0;t<this.numTriangles;t++){let n=t+2,i=0,o=0,a=0,l=0,c=0,h=0;for(n&1?a=l=c=r:i=o=h=r;(n>>=1)>1;){let f=i+a>>1,d=o+l>>1;n&1?(a=i,l=o,i=c,o=h):(i=a,o=l,a=c,l=h),c=f,h=d}let u=t*4;this.coords[u+0]=i,this.coords[u+1]=o,this.coords[u+2]=a,this.coords[u+3]=l}}createTile(e){return new K(e,this)}},K=class{constructor(e,r){let t=r.gridSize;if(e.length!==t*t)throw new Error(`Expected terrain data of length ${t*t} (${t} x ${t}), got 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y=t[g*r+d]-1,S=t[_*r+m]-1,I=t[p*r+E]-1;c[2*y]=d,c[2*y+1]=g,c[2*S]=m,c[2*S+1]=_,c[2*I]=E,c[2*I+1]=p,h[u++]=y,h[u++]=S,h[u++]=I}}return f(0,0,a,a,a,0),f(a,a,0,0,0,a),{vertices:c,triangles:h}}};var O=class{constructor(e,r,t=r){this.data=e,this.width=r,this.height=t,this.coords=[],this.triangles=[],this._halfedges=[],this._candidates=[],this._queueIndices=[],this._queue=[],this._errors=[],this._rms=[],this._pending=[],this._pendingLen=0,this._rmsSum=0;let n=r-1,i=t-1,o=this._addPoint(0,0),a=this._addPoint(n,0),l=this._addPoint(0,i),c=this._addPoint(n,i),h=this._addTriangle(c,o,l,-1,-1,-1);this._addTriangle(o,c,a,h,-1,-1),this._flush()}run(e=1){for(;this.getMaxError()>e;)this.refine()}refine(){this._step(),this._flush()}getMaxError(){return this._errors[0]}getRMSD(){return this._rmsSum>0?Math.sqrt(this._rmsSum/(this.width*this.height)):0}heightAt(e,r){return this.data[this.width*r+e]}_flush(){let e=this.coords;for(let r=0;r<this._pendingLen;r++){let t=this._pending[r],n=2*this.triangles[t*3+0],i=2*this.triangles[t*3+1],o=2*this.triangles[t*3+2];this._findCandidate(e[n],e[n+1],e[i],e[i+1],e[o],e[o+1],t)}this._pendingLen=0}_findCandidate(e,r,t,n,i,o,a){let l=Math.min(e,t,i),c=Math.min(r,n,o),h=Math.max(e,t,i),u=Math.max(r,n,o),f=M(t,n,i,o,l,c),d=M(i,o,e,r,l,c),g=M(e,r,t,n,l,c),m=n-r,_=e-t,E=o-n,p=t-i,T=r-o,x=i-e,y=M(e,r,t,n,i,o),S=this.heightAt(e,r)/y,I=this.heightAt(t,n)/y,he=this.heightAt(i,o)/y,z=0,P=0,w=0,W=0;for(let k=c;k<=u;k++){let A=0;f<0&&E!==0&&(A=Math.max(A,Math.floor(-f/E))),d<0&&T!==0&&(A=Math.max(A,Math.floor(-d/T))),g<0&&m!==0&&(A=Math.max(A,Math.floor(-g/m)));let Q=f+E*A,j=d+T*A,Z=g+m*A,re=!1;for(let C=l+A;C<=h;C++){if(Q>=0&&j>=0&&Z>=0){re=!0;let ue=S*Q+I*j+he*Z,R=Math.abs(ue-this.heightAt(C,k));W+=R*R,R>z&&(z=R,P=C,w=k)}else if(re)break;Q+=E,j+=T,Z+=m}f+=p,d+=x,g+=_}(P===e&&w===r||P===t&&w===n||P===i&&w===o)&&(z=0),this._candidates[2*a]=P,this._candidates[2*a+1]=w,this._rms[a]=W,this._queuePush(a,z,W)}_step(){let e=this._queuePop(),r=e*3+0,t=e*3+1,n=e*3+2,i=this.triangles[r],o=this.triangles[t],a=this.triangles[n],l=this.coords[2*i],c=this.coords[2*i+1],h=this.coords[2*o],u=this.coords[2*o+1],f=this.coords[2*a],d=this.coords[2*a+1],g=this._candidates[2*e],m=this._candidates[2*e+1],_=this._addPoint(g,m);if(M(l,c,h,u,g,m)===0)this._handleCollinear(_,r);else if(M(h,u,f,d,g,m)===0)this._handleCollinear(_,t);else if(M(f,d,l,c,g,m)===0)this._handleCollinear(_,n);else{let E=this._halfedges[r],p=this._halfedges[t],T=this._halfedges[n],x=this._addTriangle(i,o,_,E,-1,-1,r),y=this._addTriangle(o,a,_,p,-1,x+1),S=this._addTriangle(a,i,_,T,x+2,y+1);this._legalize(x),this._legalize(y),this._legalize(S)}}_addPoint(e,r){let t=this.coords.length>>1;return this.coords.push(e,r),t}_addTriangle(e,r,t,n,i,o,a=this.triangles.length){let l=a/3;return this.triangles[a+0]=e,this.triangles[a+1]=r,this.triangles[a+2]=t,this._halfedges[a+0]=n,this._halfedges[a+1]=i,this._halfedges[a+2]=o,n>=0&&(this._halfedges[n]=a+0),i>=0&&(this._halfedges[i]=a+1),o>=0&&(this._halfedges[o]=a+2),this._candidates[2*l+0]=0,this._candidates[2*l+1]=0,this._queueIndices[l]=-1,this._rms[l]=0,this._pending[this._pendingLen++]=l,a}_legalize(e){let r=this._halfedges[e];if(r<0)return;let t=e-e%3,n=r-r%3,i=t+(e+1)%3,o=t+(e+2)%3,a=n+(r+2)%3,l=n+(r+1)%3,c=this.triangles[o],h=this.triangles[e],u=this.triangles[i],f=this.triangles[a],d=this.coords;if(!ve(d[2*c],d[2*c+1],d[2*h],d[2*h+1],d[2*u],d[2*u+1],d[2*f],d[2*f+1]))return;let g=this._halfedges[i],m=this._halfedges[o],_=this._halfedges[a],E=this._halfedges[l];this._queueRemove(t/3),this._queueRemove(n/3);let p=this._addTriangle(c,f,u,-1,_,g,t),T=this._addTriangle(f,c,h,p,m,E,n);this._legalize(p+1),this._legalize(T+2)}_handleCollinear(e,r){let t=r-r%3,n=t+(r+1)%3,i=t+(r+2)%3,o=this.triangles[i],a=this.triangles[r],l=this.triangles[n],c=this._halfedges[n],h=this._halfedges[i],u=this._halfedges[r];if(u<0){let S=this._addTriangle(e,o,a,-1,h,-1,t),I=this._addTriangle(o,e,l,S,-1,c);this._legalize(S+1),this._legalize(I+2);return}let f=u-u%3,d=f+(u+2)%3,g=f+(u+1)%3,m=this.triangles[d],_=this._halfedges[d],E=this._halfedges[g];this._queueRemove(f/3);let p=this._addTriangle(o,a,e,h,-1,-1,t),T=this._addTriangle(a,m,e,E,-1,p+1,f),x=this._addTriangle(m,l,e,_,-1,T+1),y=this._addTriangle(l,o,e,c,p+2,x+1);this._legalize(p),this._legalize(T),this._legalize(x),this._legalize(y)}_queuePush(e,r,t){let n=this._queue.length;this._queueIndices[e]=n,this._queue.push(e),this._errors.push(r),this._rmsSum+=t,this._queueUp(n)}_queuePop(){let e=this._queue.length-1;return this._queueSwap(0,e),this._queueDown(0,e),this._queuePopBack()}_queuePopBack(){let e=this._queue.pop();return this._errors.pop(),this._rmsSum-=this._rms[e],this._queueIndices[e]=-1,e}_queueRemove(e){let r=this._queueIndices[e];if(r<0){let n=this._pending.indexOf(e);if(n!==-1)this._pending[n]=this._pending[--this._pendingLen];else throw new Error("Broken triangulation (something went wrong).");return}let t=this._queue.length-1;t!==r&&(this._queueSwap(r,t),this._queueDown(r,t)||this._queueUp(r)),this._queuePopBack()}_queueLess(e,r){return this._errors[e]>this._errors[r]}_queueSwap(e,r){let t=this._queue[e],n=this._queue[r];this._queue[e]=n,this._queue[r]=t,this._queueIndices[t]=r,this._queueIndices[n]=e;let i=this._errors[e];this._errors[e]=this._errors[r],this._errors[r]=i}_queueUp(e){let r=e;for(;;){let t=r-1>>1;if(t===r||!this._queueLess(r,t))break;this._queueSwap(t,r),r=t}}_queueDown(e,r){let t=e;for(;;){let n=2*t+1;if(n>=r||n<0)break;let i=n+1,o=n;if(i<r&&this._queueLess(i,n)&&(o=i),!this._queueLess(o,t))break;this._queueSwap(t,o),t=o}return t>e}};function M(s,e,r,t,n,i){return(r-n)*(e-i)-(t-i)*(s-n)}function ve(s,e,r,t,n,i,o,a){let l=s-o,c=e-a,h=r-o,u=t-a,f=n-o,d=i-a,g=l*l+c*c,m=h*h+u*u,_=f*f+d*d;return l*(u*_-m*d)-c*(h*_-m*f)+g*(h*d-u*f)<0}function ae(s,e){let{meshMaxError:r,bounds:t,elevationDecoder:n}=e,{data:i,width:o,height:a}=s,l,c;switch(e.tesselator){case"martini":l=X(i,o,a,n,e.tesselator),c=oe(r,o,l);break;case"delatin":l=X(i,o,a,n,e.tesselator),c=ie(r,o,a,l);break;default:o===a&&!(a&o-1)?(l=X(i,o,a,n,"martini"),c=oe(r,o,l)):(l=X(i,o,a,n,"delatin"),c=ie(r,o,a,l));break}let{vertices:h}=c,{triangles:u}=c,f=ze(h,l,o,a,t),d=L(f);if(e.skirtHeight){let{attributes:g,triangles:m}=Y(f,u,e.skirtHeight);f=g,u=m}return{loaderData:{header:{}},header:{vertexCount:u.length,boundingBox:d},mode:4,indices:{value:Uint32Array.from(u),size:1},attributes:f}}function oe(s,e,r){let t=e+1,i=new N(t).createTile(r),{vertices:o,triangles:a}=i.getMesh(s);return{vertices:o,triangles:a}}function ie(s,e,r,t){let n=new O(t,e+1,r+1);n.run(s);let{coords:i,triangles:o}=n;return{vertices:i,triangles:o}}function X(s,e,r,t,n){let{rScaler:i,bScaler:o,gScaler:a,offset:l}=t,c=new Float32Array((e+1)*(r+1));for(let h=0,u=0;u<r;u++)for(let f=0;f<e;f++,h++){let d=h*4,g=s[d+0],m=s[d+1],_=s[d+2];c[h+u]=g*i+m*a+_*o+l}if(n==="martini"){for(let h=(e+1)*e,u=0;u<e;u++,h++)c[h]=c[h-e-1];for(let h=r,u=0;u<r+1;u++,h+=r+1)c[h]=c[h-1]}return c}function ze(s,e,r,t,n){let i=r+1,o=s.length/2,a=new Float32Array(o*3),l=new Float32Array(o*2),[c,h,u,f]=n||[0,0,r,t],d=(u-c)/r,g=(f-h)/t;for(let m=0;m<o;m++){let _=s[m*2],E=s[m*2+1],p=E*i+_;a[3*m+0]=_*d+c,a[3*m+1]=-E*g+f,a[3*m+2]=e[p],l[2*m+0]=_/r,l[2*m+1]=E/t}return{POSITION:{value:a,size:3},TEXCOORD_0:{value:l,size:2}}}var H="4.3.0-alpha.4";var ee={dataType:null,batchType:null,name:"Terrain",id:"terrain",module:"terrain",version:H,worker:!0,extensions:["png","pngraw","jpg","jpeg","gif","webp","bmp"],mimeTypes:["image/png","image/jpeg","image/gif","image/webp","image/bmp"],options:{terrain:{tesselator:"auto",bounds:void 0,meshMaxError:10,elevationDecoder:{rScaler:1,gScaler:0,bScaler:0,offset:0},skirtHeight:void 0}}};var te={dataType:null,batchType:null,name:"Quantized Mesh",id:"quantized-mesh",module:"terrain",version:H,worker:!0,extensions:["terrain"],mimeTypes:["application/vnd.quantized-mesh"],options:{"quantized-mesh":{bounds:[0,0,1,1],skirtHeight:null}}};var ce={...ee,parse:le};async function le(s,e,r){let t={...e,mimeType:"application/x.image",image:{...e?.image,type:"data"}},n=await J(s,[],t,r),i={...ce.options.terrain,...e?.terrain};return ae(n,i)}var ke={...te,parseSync:(s,e)=>V(s,e?.["quantized-mesh"]),parse:async(s,e)=>V(s,e?.["quantized-mesh"])};return xe(v);})();
return __exports__;
});

2

dist/lib/utils/version.js

@@ -7,2 +7,2 @@ // loaders.gl

// @ts-ignore TS2304: Cannot find name '__VERSION__'.
export const VERSION = typeof "4.3.0-alpha.3" !== 'undefined' ? "4.3.0-alpha.3" : 'latest';
export const VERSION = typeof "4.3.0-alpha.4" !== 'undefined' ? "4.3.0-alpha.4" : 'latest';

2

dist/quantized-mesh-worker.js

@@ -1296,3 +1296,3 @@ "use strict";

// src/lib/utils/version.ts
var VERSION = true ? "4.3.0-alpha.3" : "latest";
var VERSION = true ? "4.3.0-alpha.4" : "latest";

@@ -1299,0 +1299,0 @@ // src/terrain-loader.ts

2

dist/terrain-worker.js

@@ -1296,3 +1296,3 @@ "use strict";

// src/lib/utils/version.ts
var VERSION = true ? "4.3.0-alpha.3" : "latest";
var VERSION = true ? "4.3.0-alpha.4" : "latest";

@@ -1299,0 +1299,0 @@ // src/terrain-loader.ts

10

package.json
{
"name": "@loaders.gl/terrain",
"version": "4.3.0-alpha.4",
"version": "4.3.0-alpha.5",
"description": "Framework-independent loader for terrain raster formats",

@@ -46,5 +46,5 @@ "license": "MIT",

"dependencies": {
"@loaders.gl/images": "4.3.0-alpha.4",
"@loaders.gl/loader-utils": "4.3.0-alpha.4",
"@loaders.gl/schema": "4.3.0-alpha.4",
"@loaders.gl/images": "4.3.0-alpha.5",
"@loaders.gl/loader-utils": "4.3.0-alpha.5",
"@loaders.gl/schema": "4.3.0-alpha.5",
"@mapbox/martini": "^0.2.0"

@@ -55,3 +55,3 @@ },

},
"gitHead": "4900ac4c4de20366c050b80cef04dc5b52d167af"
"gitHead": "b57553345b3cbf621c95ad9b22aa672217451f61"
}
dist/index.cjs

Sorry, the diff of this file is not supported yet

dist/index.cjs.map

Sorry, the diff of this file is not supported yet

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