CesiumWidget

new Cesium.CesiumWidget(container, options)
Widgets/CesiumWidget/CesiumWidget.js 197

A widget containing a Cesium scene.
Name Type Description
container Element | String The DOM element or ID that will contain the widget.
options Object optional Object with the following properties:
Name Type Default Description
clock Clock new Clock() optional The clock to use to control current time.
imageryProvider ImageryProvider createWorldImagery() optional The imagery provider to serve as the base layer. If set to false, no imagery provider will be added.
terrainProvider TerrainProvider new EllipsoidTerrainProvider optional The terrain provider.
skyBox SkyBox optional The skybox used to render the stars. When undefined, the default stars are used. If set to false, no skyBox, Sun, or Moon will be added.
skyAtmosphere SkyAtmosphere optional Blue sky, and the glow around the Earth's limb. Set to false to turn it off.
sceneMode SceneMode SceneMode.SCENE3D optional The initial scene mode.
scene3DOnly Boolean false optional When true, each geometry instance will only be rendered in 3D to save GPU memory.
orderIndependentTranslucency Boolean true optional If true and the configuration supports it, use order independent translucency.
mapProjection MapProjection new GeographicProjection() optional The map projection to use in 2D and Columbus View modes.
globe Globe new Globe(mapProjection.ellipsoid) optional The globe to use in the scene. If set to false, no globe will be added.
useDefaultRenderLoop Boolean true optional True if this widget should control the render loop, false otherwise.
targetFrameRate Number optional The target frame rate when using the default render loop.
showRenderLoopErrors Boolean true optional If true, this widget will automatically display an HTML panel to the user containing the error, if a render loop error occurs.
contextOptions Object optional Context and WebGL creation properties corresponding to options passed to Scene.
creditContainer Element | String optional The DOM element or ID that will contain the CreditDisplay. If not specified, the credits are added to the bottom of the widget itself.
creditViewport Element | String optional The DOM element or ID that will contain the credit pop up created by the CreditDisplay. If not specified, it will appear over the widget itself.
terrainExaggeration Number 1.0 optional A scalar used to exaggerate the terrain. Note that terrain exaggeration will not modify any other primitive as they are positioned relative to the ellipsoid.
shadows Boolean false optional Determines if shadows are cast by the sun.
terrainShadows ShadowMode ShadowMode.RECEIVE_ONLY optional Determines if the terrain casts or receives shadows from the sun.
mapMode2D MapMode2D MapMode2D.INFINITE_SCROLL optional Determines if the 2D map is rotatable or can be scrolled infinitely in the horizontal direction.
requestRenderMode Boolean false optional If true, rendering a frame will only occur when needed as determined by changes within the scene. Enabling improves performance of the application, but requires using Scene#requestRender to render a new frame explicitly in this mode. This will be necessary in many cases after making changes to the scene in other parts of the API. See Improving Performance with Explicit Rendering.
maximumRenderTimeChange Number 0.0 optional If requestRenderMode is true, this value defines the maximum change in simulation time allowed before a render is requested. See Improving Performance with Explicit Rendering.
Throws:
  • DeveloperError : Element with id "container" does not exist in the document.
Example:
// For each example, include a link to CesiumWidget.css stylesheet in HTML head,
// and in the body, include: <div id="cesiumContainer"></div>

//Widget with no terrain and default Bing Maps imagery provider.
var widget = new Cesium.CesiumWidget('cesiumContainer');

//Widget with OpenStreetMaps imagery provider and Cesium World Terrain.
var widget = new Cesium.CesiumWidget('cesiumContainer', {
    imageryProvider : Cesium.createOpenStreetMapImageryProvider(),
    terrainProvider : Cesium.createWorldTerrain(),
    // Use high-res stars downloaded from https://github.com/AnalyticalGraphicsInc/cesium-assets
    skyBox : new Cesium.SkyBox({
        sources : {
          positiveX : 'stars/TychoSkymapII.t3_08192x04096_80_px.jpg',
          negativeX : 'stars/TychoSkymapII.t3_08192x04096_80_mx.jpg',
          positiveY : 'stars/TychoSkymapII.t3_08192x04096_80_py.jpg',
          negativeY : 'stars/TychoSkymapII.t3_08192x04096_80_my.jpg',
          positiveZ : 'stars/TychoSkymapII.t3_08192x04096_80_pz.jpg',
          negativeZ : 'stars/TychoSkymapII.t3_08192x04096_80_mz.jpg'
        }
    }),
    // Show Columbus View map with Web Mercator projection
    sceneMode : Cesium.SceneMode.COLUMBUS_VIEW,
    mapProjection : new Cesium.WebMercatorProjection()
});
Demo:

Members

readonlycamera : Camera
Widgets/CesiumWidget/CesiumWidget.js 462

Gets the camera.

canvas : Canvas
Widgets/CesiumWidget/CesiumWidget.js 385

Gets the canvas.

clock : Clock
Widgets/CesiumWidget/CesiumWidget.js 474

Gets the clock.

container : Element
Widgets/CesiumWidget/CesiumWidget.js 373

Gets the parent container.

creditContainer : Element
Widgets/CesiumWidget/CesiumWidget.js 397

Gets the credit container.

creditViewport : Element
Widgets/CesiumWidget/CesiumWidget.js 409

Gets the credit viewport

readonlyimageryLayers : ImageryLayerCollection
Widgets/CesiumWidget/CesiumWidget.js 434

Gets the collection of image layers that will be rendered on the globe.

resolutionScale : Number
Widgets/CesiumWidget/CesiumWidget.js 555

Gets or sets a scaling factor for rendering resolution. Values less than 1.0 can improve performance on less powerful devices while values greater than 1.0 will render at a higher resolution and then scale down, resulting in improved visual fidelity. For example, if the widget is laid out at a size of 640x480, setting this value to 0.5 will cause the scene to be rendered at 320x240 and then scaled up while setting it to 2.0 will cause the scene to be rendered at 1280x960 and then scaled down.
Default Value: 1.0

scene : Scene
Widgets/CesiumWidget/CesiumWidget.js 421

Gets the scene.

screenSpaceEventHandler : ScreenSpaceEventHandler
Widgets/CesiumWidget/CesiumWidget.js 486

Gets the screen space event handler.

targetFrameRate : Number
Widgets/CesiumWidget/CesiumWidget.js 501

Gets or sets the target frame rate of the widget when useDefaultRenderLoop is true. If undefined, the browser's requestAnimationFrame implementation determines the frame rate. If defined, this value must be greater than 0. A value higher than the underlying requestAnimationFrame implementation will have no effect.

terrainProvider : TerrainProvider
Widgets/CesiumWidget/CesiumWidget.js 446

The terrain provider providing surface geometry for the globe.

useDefaultRenderLoop : Boolean
Widgets/CesiumWidget/CesiumWidget.js 529

Gets or sets whether or not this widget should control the render loop. If set to true the widget will use requestAnimationFrame to perform rendering and resizing of the widget, as well as drive the simulation clock. If set to false, you must manually call the resize, render methods as part of a custom render loop. If an error occurs during rendering, Scene's renderError event will be raised and this property will be set to false. It must be set back to true to continue rendering after the error.

Methods

destroy()
Widgets/CesiumWidget/CesiumWidget.js 659

Destroys the widget. Should be called if permanently removing the widget from layout.

isDestroyed() → Boolean
Widgets/CesiumWidget/CesiumWidget.js 651

Returns:
true if the object has been destroyed, false otherwise.

render()
Widgets/CesiumWidget/CesiumWidget.js 690

Renders the scene. This function is called automatically unless useDefaultRenderLoop is set to false;

resize()
Widgets/CesiumWidget/CesiumWidget.js 671

Updates the canvas size, camera aspect ratio, and viewport size. This function is called automatically as needed unless useDefaultRenderLoop is set to false.

showErrorPanel(title, message, error)
Widgets/CesiumWidget/CesiumWidget.js 581

Show an error panel to the user containing a title and a longer error message, which can be dismissed using an OK button. This panel is displayed automatically when a render loop error occurs, if showRenderLoopErrors was not false when the widget was constructed.
Name Type Description
title String The title to be displayed on the error panel. This string is interpreted as text.
message String A helpful, user-facing message to display prior to the detailed error information. This string is interpreted as HTML.
error String optional The error to be displayed on the error panel. This string is formatted using formatError and then displayed as text.