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Merge pull request #11678 from Tamrat-B/feature/i3s_bsl_support
Add support for Building Scene Layer (BSL) OGC I3S standard
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="utf-8" /> | ||
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> | ||
| <meta | ||
| name="viewport" | ||
| content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no" | ||
| /> | ||
| <meta | ||
| name="description" | ||
| content="Add I3S Building Scene Layer from a service." | ||
| /> | ||
| <meta name="cesium-sandcastle-labels" content="DataSources" /> | ||
| <title>I3S Building Scene Cesium Demo</title> | ||
| <script type="text/javascript" src="../Sandcastle-header.js"></script> | ||
| <script | ||
| type="text/javascript" | ||
| src="../../../Build/CesiumUnminified/Cesium.js" | ||
| nomodule | ||
| ></script> | ||
| <script type="module" src="../load-cesium-es6.js"></script> | ||
| </head> | ||
|
|
||
| <body | ||
| class="sandcastle-loading" | ||
| data-sandcastle-bucket="bucket-requirejs.html" | ||
| > | ||
| <style> | ||
| @import url(../templates/bucket.css); | ||
| #toolbar { | ||
| background: rgba(42, 42, 42, 0.8); | ||
| padding: 10px; | ||
| border-radius: 4px; | ||
| max-height: 100%; | ||
| overflow-y: auto; | ||
| } | ||
| </style> | ||
| <div id="cesiumContainer" class="fullSize"></div> | ||
| <div id="loadingOverlay"> | ||
| <h1>Loading...</h1> | ||
| </div> | ||
| <div id="toolbar"></div> | ||
| <script id="cesium_sandcastle_script"> | ||
| window.startup = async function (Cesium) { | ||
| "use strict"; | ||
| //Sandcastle_Begin | ||
| // Cesium World Terrain height system doesn't match to I3S datasets height system in some locations even with geoid conversion. | ||
| // Set ArcGIS Tiled Elevation Terrain gravity related height system to get closer results. | ||
| const viewer = new Cesium.Viewer("cesiumContainer", { | ||
| terrain: new Cesium.Terrain( | ||
| Cesium.ArcGISTiledElevationTerrainProvider.fromUrl( | ||
| "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer" | ||
| ) | ||
| ), | ||
| animation: false, | ||
| timeline: false, | ||
| orderIndependentTranslucency: false, | ||
| msaaSamples: 4, // enables multisample antialiasing for improved visual quality | ||
| }); | ||
|
|
||
| // More datasets to tour can be added here... | ||
| // The url passed to I3SDataProvider supports loading a single Indexed 3D Scene (I3S) layer (.<host>/SceneServer/layers/<id>) or a collection of scene layers (.<host>/SceneServer) from a SceneServer. | ||
| const tours = { | ||
| "Turanga Library": | ||
| "https://tiles.arcgis.com/tiles/cFEFS0EWrhfDeVw9/arcgis/rest/services/Turanga_Library/SceneServer", | ||
| }; | ||
|
|
||
| try { | ||
| // Create i3s options to pass optional parameters useful for debugging and visualizing | ||
| const i3sOptions = { | ||
| adjustMaterialAlphaMode: true, // force the alpha mode to be set for transparent geometry | ||
| showFeatures: true, // creates 3D object for each feature and allows to apply attributes filter | ||
| applySymbology: true, // applies outlines based on the I3S layer renderer details | ||
| calculateNormals: true, // generates flat normals if they are missing in I3S buffers | ||
| }; | ||
|
|
||
| // Create I3S data provider | ||
| const i3sProvider = await Cesium.I3SDataProvider.fromUrl( | ||
| tours["Turanga Library"], | ||
| i3sOptions | ||
| ); | ||
|
|
||
| Cesium.I3SBuildingSceneLayerExplorer("toolbar", i3sProvider); | ||
|
|
||
| // Add the i3s layer provider as a primitive data type | ||
| viewer.scene.primitives.add(i3sProvider); | ||
|
|
||
| // Center camera on I3S once it's loaded | ||
| const center = Cesium.Rectangle.center(i3sProvider.extent); | ||
| center.height = 300.0; | ||
| // Adjust camera height by the I3S BSL extent | ||
| let bslLayer = i3sProvider.data; | ||
| if (Cesium.defined(bslLayer.layers) && bslLayer.layers.length > 0) { | ||
| bslLayer = bslLayer.layers[0]; | ||
| } | ||
| if ( | ||
| Cesium.defined(bslLayer.fullExtent) && | ||
| Cesium.defined(bslLayer.fullExtent.zmax) | ||
| ) { | ||
| center.height += bslLayer.fullExtent.zmax; | ||
| } | ||
| const destination = Cesium.Ellipsoid.WGS84.cartographicToCartesian( | ||
| center | ||
| ); | ||
| viewer.camera.setView({ | ||
| destination: destination, | ||
| }); | ||
|
|
||
| // Override home button to center the camera on I3S | ||
| viewer.homeButton.viewModel._command = Cesium.createCommand( | ||
| function () { | ||
| viewer.camera.flyTo({ | ||
| destination: destination, | ||
| }); | ||
| } | ||
| ); | ||
| } catch (error) { | ||
| console.error( | ||
| `There was an error creating the I3S Data Provider: ${error}` | ||
| ); | ||
| } | ||
|
|
||
| // Information about the currently selected feature | ||
| const selected = { | ||
| feature: undefined, | ||
| originalColor: new Cesium.Color(), | ||
| }; | ||
|
|
||
| // An entity object which will hold info about the currently selected feature for infobox display | ||
| const selectedEntity = new Cesium.Entity(); | ||
| // Show metadata in the InfoBox. | ||
| viewer.screenSpaceEventHandler.setInputAction(function onLeftClick( | ||
| movement | ||
| ) { | ||
| const selectedFeature = selected.feature; | ||
|
|
||
| // Pick a new feature | ||
| const pickedFeature = viewer.scene.pick(movement.position); | ||
| if (selectedFeature === pickedFeature) { | ||
| return; | ||
| } | ||
|
|
||
| // If a feature was previously selected, undo the highlight | ||
| if (Cesium.defined(selected.feature)) { | ||
| selected.feature.color = selected.originalColor; | ||
| selected.feature = undefined; | ||
| } | ||
|
|
||
| if ( | ||
| !Cesium.defined(pickedFeature) || | ||
| !Cesium.defined(pickedFeature.content) || | ||
| !Cesium.defined(pickedFeature.content.tile.i3sNode) | ||
| ) { | ||
| viewer.selectedEntity = undefined; | ||
| return; | ||
| } | ||
|
|
||
| // Highlight newly selected feature | ||
| selected.feature = pickedFeature; | ||
| Cesium.Color.clone(pickedFeature.color, selected.originalColor); | ||
| pickedFeature.color = Cesium.Color.BLUE; | ||
|
|
||
| const i3sNode = pickedFeature.content.tile.i3sNode; | ||
| i3sNode.loadFields().then(function () { | ||
| let description = "No attributes"; | ||
| let name; | ||
|
|
||
| const fields = i3sNode.getFieldsForFeature(pickedFeature.featureId); | ||
| if (Object.keys(fields).length > 0) { | ||
| description = | ||
| '<table class="cesium-infoBox-defaultTable"><tbody>'; | ||
| for (const fieldName in fields) { | ||
| if (i3sNode.fields.hasOwnProperty(fieldName)) { | ||
| description += `<tr><th>${fieldName}</th><td>`; | ||
| description += `${fields[fieldName]}</td></tr>`; | ||
| if (!Cesium.defined(name) && isNameProperty(fieldName)) { | ||
| name = fields[fieldName]; | ||
| } | ||
| } | ||
| } | ||
| description += `</tbody></table>`; | ||
| } | ||
| if (!Cesium.defined(name)) { | ||
| name = "unknown"; | ||
| } | ||
| selectedEntity.name = name; | ||
| selectedEntity.description = description; | ||
| viewer.selectedEntity = selectedEntity; | ||
| }); | ||
| }, | ||
| Cesium.ScreenSpaceEventType.LEFT_CLICK); | ||
|
|
||
| function isNameProperty(propertyName) { | ||
| const name = propertyName.toLowerCase(); | ||
| if ( | ||
| name.localeCompare("name") === 0 || | ||
| name.localeCompare("objname") === 0 || | ||
| name.localeCompare("category") === 0 | ||
| ) { | ||
| return true; | ||
| } | ||
| return false; | ||
| } //Sandcastle_End | ||
| }; | ||
| if (typeof Cesium !== "undefined") { | ||
| window.startupCalled = true; | ||
| window.startup(Cesium).catch((error) => { | ||
| "use strict"; | ||
| console.error(error); | ||
| }); | ||
| Sandcastle.finishedLoading(); | ||
| } | ||
| </script> | ||
| </body> | ||
| </html> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| import Check from "./Check.js"; | ||
|
|
||
| /** | ||
| * Converts the value from sRGB color space to linear color space. | ||
| * | ||
| * @function | ||
| * | ||
| * @param {number} value The color value in sRGB color space. | ||
| * @returns {number} Returns the color value in linear color space. | ||
| * | ||
| * @example | ||
| * const srgbColor = [0.5, 0.5, 0.5]; | ||
| * const linearColor = srgbColor.map(function (c) { | ||
| * return Cesium.srgbToLinear(c); | ||
| * }); | ||
| */ | ||
| function srgbToLinear(value) { | ||
| //>>includeStart('debug', pragmas.debug); | ||
| Check.defined("value", value); | ||
| //>>includeEnd('debug'); | ||
|
|
||
| if (value <= 0.04045) { | ||
| // eslint-disable-next-line no-loss-of-precision | ||
| return value * 0.07739938080495356037151702786378; | ||
| } | ||
| return Math.pow( | ||
| // eslint-disable-next-line no-loss-of-precision | ||
| (value + 0.055) * 0.94786729857819905213270142180095, | ||
| 2.4 | ||
| ); | ||
| } | ||
| export default srgbToLinear; |
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