cesium-geoserverterrainprovider
Version:
plugin to create a Cesium terrain provider from Geoserver
2 lines (1 loc) • 15.2 kB
JavaScript
;(()=>{var v=window.Cesium;function G(e,r){let t=Math.max(e.west,r.west),i=Math.min(e.east,r.east),a=Math.max(e.south,r.south),n=Math.min(e.north,r.north),l;return i<=t||a>=n?l=null:l=new v.Rectangle(t,a,i,n),l}var D=[{name:"CRS:84",ellipsoid:v.Ellipsoid.WGS84,firstAxeIsLatitude:!1,tilingScheme:v.GeographicTilingScheme,supportedCRS:"urn:ogc:def:crs:OGC:2:84"},{name:"EPSG:4326",ellipsoid:v.Ellipsoid.WGS84,firstAxeIsLatitude:!0,tilingScheme:v.GeographicTilingScheme,supportedCRS:"urn:ogc:def:crs:EPSG::4326"},{name:"EPSG:3857",ellipsoid:v.Ellipsoid.WGS84,firstAxeIsLatitude:!1,tilingScheme:v.WebMercatorTilingScheme,supportedCRS:"urn:ogc:def:crs:EPSG::3857"},{name:"OSGEO:41001",ellipsoid:v.Ellipsoid.WGS84,firstAxeIsLatitude:!1,tilingScheme:v.WebMercatorTilingScheme,supportedCRS:"urn:ogc:def:crs:EPSG::3857"}];var H=[{format:"image/png",extension:"png"},{format:"image/jpeg",extension:"jpg"},{format:"image/jpeg",extension:"jpeg"},{format:"image/gif",extension:"gif"},{format:"image/png; 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i.postProcessArray(e,t,r.highest,r.lowest,r.offset)}function Y(e,r,t,i){let a=v.getImagePixels(e,t.width,t.height),n=new Int16Array(a.length/4),l=0,g=0;for(let f=0;f<a.length;f+=4){let d=a[f],p=a[f+1],x=a[f+2]>128,y=(d<<8|p)-r.offset-32768;y>r.lowest&&y<r.highest&&(x||i)?(n[f/4]=y,g+=y,l++):n[f/4]=l===0?0:g/l}return n}var Z=window.Cesium,{fetchXML:Q}=Z.Resource;async function K(e){let r;if(e.url)e.xml=await Q({url:e.url+"/gwc/service/tms/1.0.0"}),r=await j(e);else if(e.xml)r=await j(e);else throw new Error("either description.url or description.xml are required.");return r}async function j(e){let r=e.xml;if(!(r instanceof XMLDocument))throw new Error("xml must be a XMLDocument");let t;if(r.querySelector("TileMapService")!==null){if(!e.layerName)throw new Error("layerName is required.");let i=Array.from(r.querySelectorAll("TileMap[title='"+e.layerName+"']")).map(a=>{let n=a.getAttribute("href");return e.proxy&&(n=e.proxy.getURL(n)),Q({url:n}).then(l=>(e.xml=l,z(e)))});t=await Promise.race(i)}else t=z(e);return t}function z(e){let r=e.xml,t={};W(e,t);let i=e.maxLevel,a=e.proxy,n=r.querySelector("SRS").textContent,l=D.find(m=>m.name===n);l&&(t.tilingScheme=new l.tilingScheme({ellipsoid:l.ellipsoid}));let g=r.querySelector("TileFormat"),f=H.find(m=>m.extension==g.getAttribute("extension"));f&&(t.formatImage=f,t.imageSize={width:parseInt(g.getAttribute("width"),10),height:parseInt(g.getAttribute("height"),10)});let d=Array.from(r.querySelectorAll("TileSets>TileSet")),p=[];if(t.formatImage&&(p=d.map(function(m){let o=m.getAttribute("href")+"/{x}/{tmsY}."+t.formatImage.extension;a&&(o=a.getURL(o));let u=parseInt(m.getAttribute("order"));return{url:o,level:u}}),p.sort((m,o)=>m.level-o.level)),p.length===0||!t.formatImage||!t.tilingScheme)throw new Error("no tilesets, no formatImage and no formatArray");t.URLtemplateImage=function(m,o,u){let b="";return u<p.length&&(b=p[u].url),b};let x=r.querySelector("BoundingBox"),y=parseFloat(x.getAttribute("miny")),I=parseFloat(x.getAttribute("maxy")),L=parseFloat(x.getAttribute("minx")),c=parseFloat(x.getAttribute("maxx")),S=new Z.Rectangle(L,y,c,I);return t.getTileDataAvailable=function(m,o,u){let b=t.tilingScheme.tileXYToNativeRectangle(m,o,u);return G(S,b)!==null&&u<i&&u<p.length},t.ready=!0,t}var _=window.Cesium,{fetchXML:ae}=_.Resource;async function $(e){let r;if(e.url){let t=e.url,i=t.lastIndexOf("?");i>-1&&(t=t.substring(0,i));let a=t+"/ows?SERVICE=WMS&REQUEST=GetCapabilities&tiled=true";console.log(a),e.proxy&&(a=e.proxy.getURL(a)),e.xml=await ae({url:a}),r=J(e)}else if(e.xml)r=J(e);else throw new Error("either description.url or description.xml are required.");return r}function J(e){if(!(e.xml instanceof XMLDocument))throw new Error("xml must be a XMLDocument");if(!e.layerName)throw new Error("description.layerName is required.");let r=e.xml,t={},i=e.layerName,a=e.maxLevel,n=null,l={width:65,height:65},g;W(e,t),t.formatImage=e.formatImage,t.formatArray=e.formatArray,t.tilingScheme=void 0;let f,d,p=e.styleName,x=r.querySelector("[version]");x!==null&&(n=x.getAttribute("version"),d=/^1\.[3-9]\./.test(n));let y=r.querySelector("Request>GetMap OnlineResource").getAttribute("xlink:href"),I=y.indexOf("?");I>-1&&(y=y.substring(0,I)),e.proxy&&(y=e.proxy.getURL(y));let L=Array.from(r.querySelectorAll("Request>GetMap>Format")).map(m=>m.textContent);for(let m=0;m<L.length;m++)t.formatImage||(t.formatImage=H.find(o=>o.format===L[m])),t.formatArray||(t.formatArray=X.find(o=>o.format===L[m]));t.formatArray&&typeof t.formatArray.format=="string"&&typeof t.formatArray.postProcessArray=="function"?t.formatArray.terrainDataStructure=Object.assign({},O):delete t.formatArray,(!t.formatImage||typeof t.formatImage.format!="string")&&(t.formatImage=void 0);let 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A,F,w,T;f&&d?(A=parseFloat(h.getAttribute("miny")),F=parseFloat(h.getAttribute("maxy")),w=parseFloat(h.getAttribute("minx")),T=parseFloat(h.getAttribute("maxx"))):(A=parseFloat(h.getAttribute("minx")),F=parseFloat(h.getAttribute("maxx")),w=parseFloat(h.getAttribute("miny")),T=parseFloat(h.getAttribute("maxy")));let M=new _.Rectangle(A,w,F,T);t.getTileDataAvailable=function(C,E,q){let U=!1,ie=t.tilingScheme.tileXYToNativeRectangle(C,E,q);return q<a&&(U=G(M,ie)!==null),U},m=!0}}if(p){let b=S.querySelectorAll("Style>Name"),s=!1;for(let R=0;R<b.length&&!s;R++)p===b[R].textContent&&(s=!0);s||(p=null)}let o=r.querySelectorAll("VendorSpecificCapabilities>TileSet"),u=!1;for(let b=0;b<o.length&&!u;b++){let s=o[b].querySelector("BoundingBox[SRS='"+g+"'],BoundingBox[CRS='"+g+"']")!==null;o[b].querySelector("Layers").textContent===i&&s&&(l.width=parseInt(o[b].querySelector("Width").textContent,10),l.height=parseInt(o[b].querySelector("Height").textContent,10),u=!0)}t.ready=m&&(t.formatImage||t.formatArray)&&n!==null}if(t.ready){let m=y+"?SERVICE=WMS&REQUEST=GetMap&layers="+i+"&version="+n+"&bbox=";if(d&&f?m+="{south},{west},{north},{east}":m+="{west},{south},{east},{north}",m+="&crs="+g+"&srs="+g,t.formatImage){let o=m+"&format="+t.formatImage.format+"&width="+l.width+"&height="+l.height;p&&(o+="&styles="+p+"&style="+p),t.URLtemplateImage=()=>o,t.imageSize=l}if(t.formatArray){let o=m+"&format="+t.formatArray.format+"&width="+t.heightMapWidth+"&height="+t.heightMapHeight;t.URLtemplateArray=()=>o}}return t}var ne=window.Cesium,{fetchXML:oe}=ne.Resource;async function te(e){let r;if(e.url){let t=e.url,i=t.lastIndexOf("?");i>-1&&(t=t.substring(0,i));let a=t+"/gwc/service/wmts?REQUEST=GetCapabilities";e.proxy&&(a=e.proxy.getURL(a)),e.xml=await oe({url:a}),r=ee(e)}else if(e.xml)r=ee(e);else throw new Error("either description.url or description.xml are required.");return r}function ee(e){let r=e.xml;if(!(r instanceof XMLDocument))throw new Error("xml must be a XMLDocument");let t={},i=e.layerName;W(e,t);let a=e.maxLevel,n=e.proxy,l=e.styleName,g=null,f=[],d=null,p=null,x=null;Array.from(r.querySelectorAll('Operation[name="GetTile"] HTTP Get')).map(c=>({node:c,type:c.querySelector("Value").textContent})).forEach(c=>{c.type==="RESTful"&&p===null&&(p=c.node.getAttribute("xlink:href"),n&&(p=n.getURL(p))),c.type==="KVP"&&d===null&&(d=c.node.getAttribute("xlink:href"),n&&(d=n.getURL(d)))});let y=r.querySelectorAll("Contents>Layer>Identifier"),I=null;for(let c=0;c<y.length&&I===null;c++)i===y[c].textContent&&(I=y[c].parentNode);if(I!==null){let c,S;Array.from(I.querySelectorAll("Style")).forEach(o=>{let u=o.querySelector("Identifier").textContent;o.getAttribute("isDefault")!=null&&(c=u),u===l&&(S=u)}),(!l||l!==S)&&(l=c||"");let m=Array.from(I.querySelectorAll("Format"));for(let o=0;o<H.length&&x===null;o++)m.filter(b=>b.textContent===H[o].format).length>0&&(x=H[o]);f=Array.from(I.querySelectorAll("TileMatrixSetLink"))}let L=Array.from(r.querySelectorAll("TileMatrixSet>Identifier"));for(let c=0;c<f.length&&!t.ready;c++){let S=f[c],m=S.querySelector("TileMatrixSet").textContent,o=null,u=null;for(let s=0;s<L.length&&o===null;s++)L[s].textContent===m&&(o=L[s].parentNode);let b=o.querySelector("SupportedCRS").textContent;for(let s=0;s<D.length&&u===null;s++)D[s].supportedCRS===b&&(u=D[s]);if(u!==null){let s=Array.from(o.querySelectorAll("TileMatrix")).map(function(h){let A=h.querySelector("Identifier").textContent,F=parseInt(h.querySelector("MatrixWidth").textContent,10),w=parseInt(h.querySelector("MatrixHeight").textContent,10),T=parseInt(h.querySelector("TileWidth").textContent,10),M=parseInt(h.querySelector("TileHeight").textContent,10),C=parseFloat(h.querySelector("ScaleDenominator").textContent);return{id:A,maxWidth:F,maxHeight:w,scaleDenominator:C,complete:!1,tileWidth:T,tileHeight:M}}).sort((h,A)=>A.scaleDenominator-h.scaleDenominator),R=Array.from(S.querySelectorAll("TileMatrixSetLimits>TileMatrixLimits")).map(h=>({id:h.querySelector("TileMatrix").textContent,bbox:{minTileRow:parseInt(h.querySelector("MinTileRow").textContent,10),maxTileRow:parseInt(h.querySelector("MaxTileRow").textContent,10),minTileCol:parseInt(h.querySelector("MinTileCol").textContent,10),maxTileCol:parseInt(h.querySelector("MaxTileCol").textContent,10)}}));if(s.forEach(h=>{R.forEach(A=>{h.id===A.id&&(h.bbox=A.bbox,h.complete=!0)})}),s.length>0){t.tilingScheme=new u.tilingScheme({ellipsoid:u.ellipsoid,numberOfLevelZeroTilesX:s[0].maxWidth,numberOfLevelZeroTilesY:s[0].maxHeight});let h=I.querySelector("ResourceURL[format='"+x.format+"']");if(h!==null?g=h.getAttribute("template").replace("{TileRow}","{y}").replace("{TileCol}","{x}").replace("{style}",l).replace("{Style}",l).replace("{TileMatrixSet}",m).replace("{layer}",i).replace("{infoFormatExtension}",x.extension):d!==null&&(g=d+"service=WMTS&request=GetTile&version=1.0.0&layer="+i+"&style="+l+"&format="+x.format+"&TileMatrixSet="+m+"&TileMatrix={TileMatrix}&TileRow={y}&TileCol={x}"),g!==null){t.getTileDataAvailable=(w,T,M)=>{let C=!1;if(M<a&&M<s.length){let E=s[M],q=E.bbox;E.complete?C=T<=q.maxTileRow&&T>=q.minTileRow&&w<=q.maxTileCol&&w>=q.minTileCol:C=w<E.maxWidth&&T<E.maxHeight}return C},t.URLtemplateImage=function(w,T,M){let C="";if(t.getTileDataAvailable(w,T,M)){let E=s[M];C=g.replace("{TileMatrix}",E.id)}return C};let A={width:s[0].tileWidth,height:s[0].tileHeight};s.filter(w=>w.tileWidth!=A.width||w.tileHeight!=A.height).length===0&&(t.imageSize=A),t.ready=!0}}}}return t}var P=window.Cesium,{fetchArrayBuffer:Le,fetchImage:De}=P.Resource,N=class{errorEvent=new P.Event;credit;tilingScheme;ready=!1;hasVertexNormals=!1;readyPromise;hasWaterMask;heightMapHeight;heightMapWidth;availability;constructor(r,t=""){this.credit=new P.Credit(t),this.tilingScheme=r.tilingScheme,this.getTileDataAvailable=r.getTileDataAvailable,this.hasWaterMask=!1,this.heightMapHeight=r.heightMapHeight,this.heightMapWidth=r.heightMapWidth,this.availability=new P.TileAvailability(this.tilingScheme,r.maximumLevel),this.getLevelMaximumGeometricError=i=>r.levelZeroMaximumGeometricError/(1<<i),this.requestTileGeometry=async(i,a,n)=>{let l,g=await r.GeometryCallback(i,a,n),f=le(i,a,n,r);return new P.HeightmapTerrainData({buffer:g,width:r.heightMapWidth,height:r.heightMapHeight,childTileMask:f})},this.ready=r.ready,this.readyPromise=new Promise(i=>!0)}requestTileGeometry(r,t,i,a){throw new Error("Method not implemented.")}getLevelMaximumGeometricError(r){throw new Error("Method not implemented.")}getTileDataAvailable(r,t,i){throw new Error("Method not implemented.")}};function le(e,r,t,i){let a=0,n=t+1;return a|=i.getTileDataAvailable(2*e,2*r,n)?1:0,a|=i.getTileDataAvailable(2*e+1,2*r,n)?2:0,a|=i.getTileDataAvailable(2*e,2*r+1,n)?4:0,a|=i.getTileDataAvailable(2*e+1,2*r+1,n)?8:0,a}var B=window.Cesium,{fetchArrayBuffer:me,fetchImage:se}=B.Resource;async function ue(e){e=Object.assign(k,e);let r;switch(e.service){case"TMS":r=K(e);break;case"WMTS":r=te(e);break;default:r=$(e)}let t=await r;return he(t),e.service==="WMTS"?new N(t):new B.CustomHeightmapTerrainProvider({height:t.heightMapHeight,width:t.heightMapWidth,tilingScheme:t.tilingScheme,callback:t.GeometryCallback})}window.Cesium.GeoserverTerrainProvider=ue;function he(e){e.levelZeroMaximumGeometricError=B.TerrainProvider.getEstimatedLevelZeroGeometricErrorForAHeightmap(e.tilingScheme.ellipsoid,e.heightMapWidth,e.tilingScheme.getNumberOfXTilesAtLevel(0)),e.URLtemplateImage&&(e.getBufferImage=async(r,t,i)=>{let a=null;if(!isNaN(r+t+i)){let n=re(e.URLtemplateImage(r,t,i),r,t,i,e),l={highest:e.highest,lowest:e.lowest,offset:e.offset};a=await se({url:n}).then(f=>Y(f,l,{width:e.heightMapWidth,height:e.heightMapHeight},e.hasStyledImage)).catch(()=>new Int16Array(e.heightMapWidth*e.heightMapHeight))}return a}),e.URLtemplateArray&&(e.getBufferArray=async(r,t,i)=>{let a=null;if(!isNaN(r+t+i)){let n=re(e.URLtemplateArray(r,t,i),r,t,i,e),l={highest:e.highest,lowest:e.lowest,offset:e.offset};a=await me({url:n}).then(f=>V(f,l,{width:e.heightMapWidth,height:e.heightMapHeight},e.formatArray)).catch(()=>new Int16Array(e.heightMapWidth*e.heightMapHeight))}return a}),e.GeometryCallback=async(r,t,i)=>{let a;return e.getBufferArray?a=await e.getBufferArray(r,t,i):e.getBufferImage&&(a=await e.getBufferImage(r,t,i)),a}}function re(e,r,t,i,a){let n=a.tilingScheme.tileXYToNativeRectangle(r,t,i),l=(n.east-n.west)/(a.heightMapWidth-1),g=(n.north-n.south)/(a.heightMapHeight-1);n.west-=l*.5,n.east+=l*.5,n.south-=g*.5,n.north+=g*.5;let d=a.tilingScheme.getNumberOfYTilesAtLevel(i)-t-1;return e.replace("{south}",n.south.toString()).replace("{north}",n.north.toString()).replace("{west}",n.west.toString()).replace("{east}",n.east.toString()).replace("{x}",r.toString()).replace("{y}",t.toString()).replace("{tmsY}",d.toString())}})();