# Scene

#### new Cesium.Scene(options)
Scene/Scene.js 155

The container for all 3D graphical objects and state in a Cesium virtual scene. Generally, a scene is not created directly; instead, it is implicitly created by `CesiumWidget`.

`contextOptions` parameter details:

The default values are: `{ webgl : { alpha : false, depth : true, stencil : false, antialias : true, powerPreference: 'high-performance', premultipliedAlpha : true, preserveDrawingBuffer : false, failIfMajorPerformanceCaveat : false }, allowTextureFilterAnisotropic : true }`

The `webgl` property corresponds to the WebGLContextAttributes object used to create the WebGL context.

`webgl.alpha` defaults to false, which can improve performance compared to the standard WebGL default of true. If an application needs to composite Cesium above other HTML elements using alpha-blending, set `webgl.alpha` to true.

The other `webgl` properties match the WebGL defaults for WebGLContextAttributes.

`allowTextureFilterAnisotropic` defaults to true, which enables anisotropic texture filtering when the WebGL extension is supported. Setting this to false will improve performance, but hurt visual quality, especially for horizon views.

Name | Type | Description
--- | --- | ---
`options` | Object | optional Object with the following properties:
Name | Type | Default | Description
--- | --- | --- | ---
`canvas` | HTMLCanvasElement |  | The HTML canvas element to create the scene for.
`contextOptions` | Object |  | optional Context and WebGL creation properties. See details above.
`creditContainer` | Element |  | optional The HTML element in which the credits will be displayed.
`creditViewport` | Element |  | optional The HTML element in which to display the credit popup. If not specified, the viewport will be a added as a sibling of the canvas.
`mapProjection` | MapProjection | `new GeographicProjection()` | optional The map projection to use in 2D and Columbus View modes.
`orderIndependentTranslucency` | Boolean | `true` | optional If true and the configuration supports it, use order independent translucency.
`scene3DOnly` | Boolean | `false` | optional If true, optimizes memory use and performance for 3D mode but disables the ability to use 2D or Columbus View.
`shadows` | Boolean | `false` | optional Determines if shadows are cast by light sources.
`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 : options and options.canvas are required.

##### Example:

    // Create scene without anisotropic texture filtering
    var scene = new Cesium.Scene({
      canvas : canvas,
      contextOptions : {
        allowTextureFilterAnisotropic : false
      }
    });

##### See:

- CesiumWidget
- WebGLContextAttributes

### Members

#### backgroundColor : Color
Scene/Scene.js 357

The background color, which is only visible if there is no sky box, i.e., `Scene#skyBox` is undefined.

Default Value: ``Color.BLACK``

##### See:

- Scene#skyBox

#### readonly camera : Camera
Scene/Scene.js 1003

Gets or sets the camera.

#### readonly cameraUnderground : Boolean
Scene/Scene.js 1650

Whether or not the camera is underneath the globe.

Default Value: `false`

#### readonly canvas : HTMLCanvasElement
Scene/Scene.js 808

Gets the canvas element to which this scene is bound.

#### readonly clampToHeightSupported : Boolean
Scene/Scene.js 915

Returns `true` if the `Scene#clampToHeight` and `Scene#clampToHeightMostDetailed` functions are supported.

##### See:

- Scene#clampToHeight
- Scene#clampToHeightMostDetailed

#### completeMorphOnUserInput : Boolean
Scene/Scene.js 290

Determines whether or not to instantly complete the scene transition animation on user input.

Default Value: `true`

#### debugCommandFilter : function
Scene/Scene.js 437

This property is for debugging only; it is not for production use.

A function that determines what commands are executed. As shown in the examples below, the function receives the command's `owner` as an argument, and returns a boolean indicating if the command should be executed.

The default is `undefined`, indicating that all commands are executed.

Default Value: `undefined`

##### Example:

    // Do not execute any commands.
    scene.debugCommandFilter = function(command) {
        return false;
    };

    // Execute only the billboard's commands.  That is, only draw the billboard.
    var billboards = new Cesium.BillboardCollection();
    scene.debugCommandFilter = function(command) {
        return command.owner === billboards;
    };

#### readonly debugFrustumStatistics : Object
Scene/Scene.js 1342

This property is for debugging only; it is not for production use.

When `Scene.debugShowFrustums` is `true`, this contains properties with statistics about the number of command execute per frustum. `totalCommands` is the total number of commands executed, ignoring overlap. `commandsInFrustums` is an array with the number of times commands are executed redundantly, e.g., how many commands overlap two or three frustums.

Default Value: `undefined`

#### debugShowCommands : Boolean
Scene/Scene.js 451

This property is for debugging only; it is not for production use.

When `true`, commands are randomly shaded. This is useful for performance analysis to see what parts of a scene or model are command-dense and could benefit from batching.

Default Value: `false`

#### debugShowDepthFrustum : Number
Scene/Scene.js 504

This property is for debugging only; it is not for production use.

Indicates which frustum will have depth information displayed.

Default Value: `1`

#### debugShowFramesPerSecond : Boolean
Scene/Scene.js 480

This property is for debugging only; it is not for production use.

Displays frames per second and time between frames.

Default Value: `false`

#### debugShowFrustumPlanes : Boolean
Scene/Scene.js 516

This property is for debugging only; it is not for production use.

When `true`, draws outlines to show the boundaries of the camera frustums

Default Value: `false`

#### debugShowFrustums : Boolean
Scene/Scene.js 468

This property is for debugging only; it is not for production use.

When `true`, commands are shaded based on the frustums they overlap. Commands in the closest frustum are tinted red, commands in the next closest are green, and commands in the farthest frustum are blue. If a command overlaps more than one frustum, the color components are combined, e.g., a command overlapping the first two frustums is tinted yellow.

Default Value: `false`

#### debugShowGlobeDepth : Boolean
Scene/Scene.js 492

This property is for debugging only; it is not for production use.

Displays depth information for the indicated frustum.

Default Value: `false`

#### readonly drawingBufferHeight : Number
Scene/Scene.js 823

The drawingBufferHeight of the underlying GL context.

##### See:

- drawingBufferHeight

#### readonly drawingBufferWidth : Number
Scene/Scene.js 838

The drawingBufferHeight of the underlying GL context.

##### See:

- drawingBufferHeight

#### eyeSeparation : Number
Scene/Scene.js 613

The eye separation distance in meters for use with cardboard or WebVR.

#### farToNearRatio : Number
Scene/Scene.js 385

The far-to-near ratio of the multi-frustum when using a normal depth buffer.

This value is used to create the near and far values for each frustum of the multi-frustum. It is only used when `Scene#logarithmicDepthBuffer` is `false`. When `logarithmicDepthBuffer` is `true`, use `Scene#logarithmicDepthFarToNearRatio`.

Default Value: `1000.0`

#### focalLength : Number
Scene/Scene.js 607

The focal length for use when with cardboard or WebVR.

#### fog : Fog
Scene/Scene.js 567

Blends the atmosphere to geometry far from the camera for horizon views. Allows for additional performance improvements by rendering less geometry and dispatching less terrain requests.

#### gamma : Number
Scene/Scene.js 1596

The value used for gamma correction. This is only used when rendering with high dynamic range.

Default Value: `2.2`

#### globe : Globe
Scene/Scene.js 957

Gets or sets the depth-test ellipsoid.

#### readonly groundPrimitives : PrimitiveCollection
Scene/Scene.js 990

Gets the collection of ground primitives.

#### highDynamicRange : Boolean
Scene/Scene.js 1611

Whether or not to use high dynamic range rendering.

Default Value: `true`

#### readonly highDynamicRangeSupported : Boolean
Scene/Scene.js 1633

Whether or not high dynamic range rendering is supported.

Default Value: `true`

#### readonly id : String
Scene/Scene.js 1380

Gets the unique identifier for this scene.

#### readonly imageryLayers : ImageryLayerCollection
Scene/Scene.js 1157

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

#### imagerySplitPosition : Number
Scene/Scene.js 1537

Gets or sets the position of the Imagery splitter within the viewport. Valid values are between 0.0 and 1.0.

#### invertClassification : Boolean
Scene/Scene.js 587

When `false`, 3D Tiles will render normally. When `true`, classified 3D Tile geometry will render normally and unclassified 3D Tile geometry will render with the color multiplied by `Scene#invertClassificationColor`.

Default Value: `false`

#### invertClassificationColor : Color
Scene/Scene.js 596

The highlight color of unclassified 3D Tile geometry when `Scene#invertClassification` is `true`.

When the color's alpha is less than 1.0, the unclassified portions of the 3D Tiles will not blend correctly with the classified positions of the 3D Tiles.

Also, when the color's alpha is less than 1.0, the WEBGL_depth_texture and EXT_frag_depth WebGL extensions must be supported.

Default Value: `Color.WHITE`

#### readonly invertClassificationSupported : Boolean
Scene/Scene.js 930

Returns `true` if the `Scene#invertClassification` is supported.

##### See:

- Scene#invertClassification

#### readonly lastRenderTime : JulianDate
Scene/Scene.js 1307

Gets the simulation time when the scene was last rendered. Returns undefined if the scene has not yet been rendered.

#### light : Light
Scene/Scene.js 770

The light source for shading. Defaults to a directional light from the Sun.

#### logarithmicDepthBuffer : Boolean
Scene/Scene.js 1577

Whether or not to use a logarithmic depth buffer. Enabling this option will allow for less frustums in the multi-frustum, increasing performance. This property relies on fragmentDepth being supported.

#### logarithmicDepthFarToNearRatio : Number
Scene/Scene.js 398

The far-to-near ratio of the multi-frustum when using a logarithmic depth buffer.

This value is used to create the near and far values for each frustum of the multi-frustum. It is only used when `Scene#logarithmicDepthBuffer` is `true`. When `logarithmicDepthBuffer` is `false`, use `Scene#farToNearRatio`.

Default Value: `1e9`

#### readonly mapMode2D : MapMode2D
Scene/Scene.js 1525

Determines if the 2D map is rotatable or can be scrolled infinitely in the horizontal direction.

#### readonly mapProjection : MapProjection
Scene/Scene.js 1084

Get the map projection to use in 2D and Columbus View modes.

Default Value: `new GeographicProjection()`

#### readonly maximumAliasedLineWidth : Number
Scene/Scene.js 853

The maximum aliased line width, in pixels, supported by this WebGL implementation. It will be at least one.

##### See:

- glGet with `ALIASED_LINE_WIDTH_RANGE`.

#### readonly maximumCubeMapSize : Number
Scene/Scene.js 868

The maximum length in pixels of one edge of a cube map, supported by this WebGL implementation. It will be at least 16.

##### See:

- glGet with `GL_MAX_CUBE_MAP_TEXTURE_SIZE`.

#### maximumRenderTimeChange : Number
Scene/Scene.js 702

If `Scene#requestRenderMode` is `true`, this value defines the maximum change in simulation time allowed before a render is requested. Lower values increase the number of frames rendered and higher values decrease the number of frames rendered. If `undefined`, changes to the simulation time will never request a render. This value impacts the rate of rendering for changes in the scene like lighting, entity property updates, and animations.

Default Value: `0.0`

##### See:

- Improving Performance with Explicit Rendering
- Scene#requestRenderMode

#### minimumDisableDepthTestDistance : Number
Scene/Scene.js 1555

The distance from the camera at which to disable the depth test of billboards, labels and points to, for example, prevent clipping against terrain. When set to zero, the depth test should always be applied. When less than zero, the depth test should never be applied. Setting the disableDepthTestDistance property of a billboard, label or point will override this value.

Default Value: `0.0`

#### mode : SceneMode
Scene/Scene.js 1392

Gets or sets the current mode of the scene.

Default Value: ``SceneMode.SCENE3D``

#### moon : Moon
Scene/Scene.js 347

The `Moon`

Default Value: `undefined`

#### morphComplete : Event
Scene/Scene.js 304

The event fired at the completion of a scene transition.

Default Value: `Event()`

#### morphStart : Event
Scene/Scene.js 297

The event fired at the beginning of a scene transition.

Default Value: `Event()`

#### morphTime : Number
Scene/Scene.js 372

The current morph transition time between 2D/Columbus View and 3D, with 0.0 being 2D or Columbus View and 1.0 being 3D.

Default Value: `1.0`

#### nearToFarDistance2D : Number
Scene/Scene.js 408

Determines the uniform depth size in meters of each frustum of the multifrustum in 2D. If a primitive or model close to the surface shows z-fighting, decreasing this will eliminate the artifact, but decrease performance. On the other hand, increasing this will increase performance but may cause z-fighting among primitives close to the surface.

Default Value: `1.75e6`

#### readonly orderIndependentTranslucency : Boolean
Scene/Scene.js 1368

Gets whether or not the scene has order independent translucency enabled. Note that this only reflects the original construction option, and there are other factors that could prevent OIT from functioning on a given system configuration.

#### readonly pickPositionSupported : Boolean
Scene/Scene.js 883

Returns `true` if the `Scene#pickPosition` function is supported.

##### See:

- Scene#pickPosition

#### pickTranslucentDepth : Boolean
Scene/Scene.js 552

When `true`, enables picking translucent geometry using the depth buffer. Note that `Scene#useDepthPicking` must also be true for enabling this to work.

Render must be called between picks.
There is a decrease in performance when enabled. There are extra draw calls to write depth for translucent geometry.

Default Value: `false`

##### Example:

    // picking the position of a translucent primitive
    viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {
         var pickedFeature = viewer.scene.pick(movement.position);
         if (!Cesium.defined(pickedFeature)) {
             // nothing picked
             return;
         }
         viewer.scene.render();
         var worldPosition = viewer.scene.pickPosition(movement.position);
    }, Cesium.ScreenSpaceEventType.LEFT_CLICK);

#### postProcessStages : PostProcessStageCollection
Scene/Scene.js 619

Post processing effects applied to the final render.

#### readonly postRender : Event
Scene/Scene.js 1293

Gets the event that will be raised immediately after the scene is rendered. Subscribers to the event receive the Scene instance as the first parameter and the current time as the second parameter.

##### See:

- Improving Performance with Explicit Rendering
- Scene#preUpdate
- Scene#postUpdate
- Scene#postRender

#### readonly postUpdate : Event
Scene/Scene.js 1238

Gets the event that will be raised immediately after the scene is updated and before the scene is rendered. Subscribers to the event receive the Scene instance as the first parameter and the current time as the second parameter.

##### See:

- Improving Performance with Explicit Rendering
- Scene#preUpdate
- Scene#preRender
- Scene#postRender

#### readonly preRender : Event
Scene/Scene.js 1274

Gets the event that will be raised after the scene is updated and immediately before the scene is rendered. Subscribers to the event receive the Scene instance as the first parameter and the current time as the second parameter.

##### See:

- Improving Performance with Explicit Rendering
- Scene#preUpdate
- Scene#postUpdate
- Scene#postRender

#### readonly preUpdate : Event
Scene/Scene.js 1218

Gets the event that will be raised before the scene is updated or rendered. Subscribers to the event receive the Scene instance as the first parameter and the current time as the second parameter.

##### See:

- Improving Performance with Explicit Rendering
- Scene#postUpdate
- Scene#preRender
- Scene#postRender

#### readonly primitives : PrimitiveCollection
Scene/Scene.js 977

Gets the collection of primitives.

#### readonly renderError : Event
Scene/Scene.js 1254

Gets the event that will be raised when an error is thrown inside the `render` function. The Scene instance and the thrown error are the only two parameters passed to the event handler. By default, errors are not rethrown after this event is raised, but that can be changed by setting the `rethrowRenderErrors` property.

#### requestRenderMode : Boolean
Scene/Scene.js 685

When `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.

Default Value: `false`

##### See:

- Improving Performance with Explicit Rendering
- Scene#maximumRenderTimeChange
- Scene#requestRender

#### rethrowRenderErrors : Boolean
Scene/Scene.js 281

Exceptions occurring in `render` are always caught in order to raise the `renderError` event. If this property is true, the error is rethrown after the event is raised. If this property is false, the `render` function returns normally after raising the event.

Default Value: `false`

#### readonly sampleHeightSupported : Boolean
Scene/Scene.js 899

Returns `true` if the `Scene#sampleHeight` and `Scene#sampleHeightMostDetailed` functions are supported.

##### See:

- Scene#sampleHeight
- Scene#sampleHeightMostDetailed

#### readonly scene3DOnly : Boolean
Scene/Scene.js 1354

Gets whether or not the scene is optimized for 3D only viewing.

#### readonly screenSpaceCameraController : ScreenSpaceCameraController
Scene/Scene.js 1069

Gets the controller for camera input handling.

#### shadowMap : ShadowMap
Scene/Scene.js 575

The shadow map for the scene's light source. When enabled, models, primitives, and the globe may cast and receive shadows.

#### skyAtmosphere : SkyAtmosphere
Scene/Scene.js 322

The sky atmosphere drawn around the globe.

Default Value: `undefined`

#### skyBox : SkyBox
Scene/Scene.js 314

The `SkyBox` used to draw the stars.

Default Value: `undefined`

##### See:

- Scene#backgroundColor

#### specularEnvironmentMaps : String
Scene/Scene.js 763

The url to the KTX2 file containing the specular environment map and convoluted mipmaps for image-based lighting of PBR models.

#### readonly specularEnvironmentMapsSupported : Boolean
Scene/Scene.js 945

Returns `true` if specular environment maps are supported.

##### See:

- Scene#specularEnvironmentMaps

#### sphericalHarmonicCoefficients : Array.<Cartesian3>
Scene/Scene.js 757

The spherical harmonic coefficients for image-based lighting of PBR models.

#### sun : Sun
Scene/Scene.js 330

The `Sun`.

Default Value: `undefined`

#### sunBloom : Boolean
Scene/Scene.js 338

Uses a bloom filter on the sun when enabled.

Default Value: `true`

#### terrainExaggeration : Number
Scene/Scene.js 1452

Gets or sets the scalar used to exaggerate the terrain.

#### terrainProvider : TerrainProvider
Scene/Scene.js 1173

The terrain provider providing surface geometry for the globe.

#### readonly terrainProviderChanged : Event
Scene/Scene.js 1195

Gets an event that's raised when the terrain provider is changed

#### useDepthPicking : Boolean
Scene/Scene.js 526

When `true`, enables picking using the depth buffer.

Default Value: `true`

#### useWebVR : Boolean
Scene/Scene.js 1482

When `true`, splits the scene into two viewports with steroscopic views for the left and right eyes. Used for cardboard and WebVR.

Default Value: `false`

### Methods

#### cartesianToCanvasCoordinates(position, result) → Cartesian2
Scene/Scene.js 4415

Transforms a position in cartesian coordinates to canvas coordinates. This is commonly used to place an HTML element at the same screen position as an object in the scene.

Name | Type | Description
--- | --- | ---
`position` | Cartesian3 | The position in cartesian coordinates.
`result` | Cartesian2 | optional An optional object to return the input position transformed to canvas coordinates.

##### Returns:

The modified result parameter or a new Cartesian2 instance if one was not provided. This may be `undefined` if the input position is near the center of the ellipsoid.

##### Example:

    // Output the canvas position of longitude/latitude (0, 0) every time the mouse moves.
    var scene = widget.scene;
    var ellipsoid = scene.globe.ellipsoid;
    var position = Cesium.Cartesian3.fromDegrees(0.0, 0.0);
    var handler = new Cesium.ScreenSpaceEventHandler(scene.canvas);
    handler.setInputAction(function(movement) {
        console.log(scene.cartesianToCanvasCoordinates(position));
    }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

#### clampToHeight(cartesian, objectsToExclude, width, result) → Cartesian3
Scene/Scene.js 4301

Clamps the given cartesian position to the scene geometry along the geodetic surface normal. Returns the clamped position or `undefined` if there was no scene geometry to clamp to. May be used to clamp objects to the globe, 3D Tiles, or primitives in the scene.

This function only clamps to globe tiles and 3D Tiles that are rendered in the current view. Clamps to all other primitives regardless of their visibility.

Name | Type | Default | Description
--- | --- | --- | ---
`cartesian` | Cartesian3 |  | The cartesian position.
`objectsToExclude` | Array.<Object> |  | optional A list of primitives, entities, or 3D Tiles features to not clamp to.
`width` | Number | `0.1` | optional Width of the intersection volume in meters.
`result` | Cartesian3 |  | optional An optional object to return the clamped position.

##### Returns:

The modified result parameter or a new Cartesian3 instance if one was not provided. This may be `undefined` if there was no scene geometry to clamp to.

##### Throws:

- DeveloperError : clampToHeight is only supported in 3D mode.
- DeveloperError : clampToHeight requires depth texture support. Check clampToHeightSupported.

##### Example:

    // Clamp an entity to the underlying scene geometry
    var position = entity.position.getValue(Cesium.JulianDate.now());
    entity.position = viewer.scene.clampToHeight(position);

##### See:

- Scene#sampleHeight
- Scene#sampleHeightMostDetailed
- Scene#clampToHeightMostDetailed

#### clampToHeightMostDetailed(cartesians, objectsToExclude, width) → Promise.<Array.<Cartesian3>>
Scene/Scene.js 4384

Initiates an asynchronous `Scene#clampToHeight` query for an array of `Cartesian3` positions using the maximum level of detail for 3D Tilesets in the scene. Returns a promise that is resolved when the query completes. Each position is modified in place. If a position cannot be clamped because no geometry can be sampled at that location, or another error occurs, the element in the array is set to undefined.

Name | Type | Default | Description
--- | --- | --- | ---
`cartesians` | Array.<Cartesian3> |  | The cartesian positions to update with clamped positions.
`objectsToExclude` | Array.<Object> |  | optional A list of primitives, entities, or 3D Tiles features to not clamp to.
`width` | Number | `0.1` | optional Width of the intersection volume in meters.

##### Returns:

A promise that resolves to the provided list of positions when the query has completed.

##### Throws:

- DeveloperError : clampToHeightMostDetailed is only supported in 3D mode.
- DeveloperError : clampToHeightMostDetailed requires depth texture support. Check clampToHeightSupported.

##### Example:

    var cartesians = [
        entities[0].position.getValue(Cesium.JulianDate.now()),
        entities[1].position.getValue(Cesium.JulianDate.now())
    ];
    var promise = viewer.scene.clampToHeightMostDetailed(cartesians);
    promise.then(function(updatedCartesians) {
        entities[0].position = updatedCartesians[0];
        entities[1].position = updatedCartesians[1];
    }

##### See:

- Scene#clampToHeight

#### completeMorph()
Scene/Scene.js 4422

Instantly completes an active transition.

#### destroy()
Scene/Scene.js 4504

Destroys the WebGL resources held by this object. Destroying an object allows for deterministic release of WebGL resources, instead of relying on the garbage collector to destroy this object.
Once an object is destroyed, it should not be used; calling any function other than `isDestroyed` will result in a `DeveloperError` exception. Therefore, assign the return value (`undefined`) to the object as done in the example.

##### Throws:

- DeveloperError : This object was destroyed, i.e., destroy() was called.

##### Example:

    scene = scene && scene.destroy();

##### See:

- Scene#isDestroyed

#### drillPick(windowPosition, limit, width, height) → Array.<*>
Scene/Scene.js 4094

Returns a list of objects, each containing a `primitive` property, for all primitives at a particular window coordinate position. Other properties may also be set depending on the type of primitive and may be used to further identify the picked object. The primitives in the list are ordered by their visual order in the scene (front to back).

Name | Type | Default | Description
--- | --- | --- | ---
`windowPosition` | Cartesian2 |  | Window coordinates to perform picking on.
`limit` | Number |  | optional If supplied, stop drilling after collecting this many picks.
`width` | Number | `3` | optional Width of the pick rectangle.
`height` | Number | `3` | optional Height of the pick rectangle.

##### Returns:

Array of objects, each containing 1 picked primitives.

##### Throws:

- DeveloperError : windowPosition is undefined.

##### Example:

    var pickedObjects = scene.drillPick(new Cesium.Cartesian2(100.0, 200.0));

##### See:

- Scene#pick

#### getCompressedTextureFormatSupported(format) → boolean
Scene/Scene.js 1698

Determines if a compressed texture format is supported.

Name | Type | Description
--- | --- | ---
`format` | String | The texture format. May be the name of the format or the WebGL extension name, e.g. s3tc or WEBGL_compressed_texture_s3tc.

##### Returns:

Whether or not the format is supported.

#### isDestroyed() → Boolean
Scene/Scene.js 4484

Returns true if this object was destroyed; otherwise, false.
If this object was destroyed, it should not be used; calling any function other than `isDestroyed` will result in a `DeveloperError` exception.

##### Returns:

`true` if this object was destroyed; otherwise, `false`.

##### See:

- Scene#destroy

#### morphTo2D(duration)
Scene/Scene.js 4430

Asynchronously transitions the scene to 2D.

Name | Type | Default | Description
--- | --- | --- | ---
`duration` | Number | `2.0` | optional The amount of time, in seconds, for transition animations to complete.

#### morphTo3D(duration)
Scene/Scene.js 4462

Asynchronously transitions the scene to 3D.

Name | Type | Default | Description
--- | --- | --- | ---
`duration` | Number | `2.0` | optional The amount of time, in seconds, for transition animations to complete.

#### morphToColumbusView(duration)
Scene/Scene.js 4446

Asynchronously transitions the scene to Columbus View.

Name | Type | Default | Description
--- | --- | --- | ---
`duration` | Number | `2.0` | optional The amount of time, in seconds, for transition animations to complete.

#### pick(windowPosition, width, height) → Object
Scene/Scene.js 4021

Returns an object with a `primitive` property that contains the first (top) primitive in the scene at a particular window coordinate or undefined if nothing is at the location. Other properties may potentially be set depending on the type of primitive and may be used to further identify the picked object.

When a feature of a 3D Tiles tileset is picked, `pick` returns a `Cesium3DTileFeature` object.

Name | Type | Default | Description
--- | --- | --- | ---
`windowPosition` | Cartesian2 |  | Window coordinates to perform picking on.
`width` | Number | `3` | optional Width of the pick rectangle.
`height` | Number | `3` | optional Height of the pick rectangle.

##### Returns:

Object containing the picked primitive.

##### Example:

    // On mouse over, color the feature yellow.
    handler.setInputAction(function(movement) {
        var feature = scene.pick(movement.endPosition);
        if (feature instanceof Cesium.Cesium3DTileFeature) {
            feature.color = Cesium.Color.YELLOW;
        }
    }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

#### pickPosition(windowPosition, result) → Cartesian3
Scene/Scene.js 4071

Returns the cartesian position reconstructed from the depth buffer and window position.

The position reconstructed from the depth buffer in 2D may be slightly different from those reconstructed in 3D and Columbus view. This is caused by the difference in the distribution of depth values of perspective and orthographic projection.

Set `Scene#pickTranslucentDepth` to `true` to include the depth of translucent primitives; otherwise, this essentially picks through translucent primitives.

Name | Type | Description
--- | --- | ---
`windowPosition` | Cartesian2 | Window coordinates to perform picking on.
`result` | Cartesian3 | optional The object on which to restore the result.

##### Returns:

The cartesian position.

##### Throws:

- DeveloperError : Picking from the depth buffer is not supported. Check pickPositionSupported.

#### render(time)
Scene/Scene.js 3875

Update and render the scene. It is usually not necessary to call this function directly because `CesiumWidget` or `Viewer` do it automatically.

Name | Type | Description
--- | --- | ---
`time` | JulianDate | optional The simulation time at which to render.

#### requestRender()
Scene/Scene.js 3985

Requests a new rendered frame when `Scene#requestRenderMode` is set to `true`. The render rate will not exceed the `CesiumWidget#targetFrameRate`.

##### See:

- Scene#requestRenderMode

#### sampleHeight(position, objectsToExclude, width) → Number
Scene/Scene.js 4270

Returns the height of scene geometry at the given cartographic position or `undefined` if there was no scene geometry to sample height from. The height of the input position is ignored. May be used to clamp objects to the globe, 3D Tiles, or primitives in the scene.

This function only samples height from globe tiles and 3D Tiles that are rendered in the current view. Samples height from all other primitives regardless of their visibility.

Name | Type | Default | Description
--- | --- | --- | ---
`position` | Cartographic |  | The cartographic position to sample height from.
`objectsToExclude` | Array.<Object> |  | optional A list of primitives, entities, or 3D Tiles features to not sample height from.
`width` | Number | `0.1` | optional Width of the intersection volume in meters.

##### Returns:

The height. This may be `undefined` if there was no scene geometry to sample height from.

##### Throws:

- DeveloperError : sampleHeight is only supported in 3D mode.
- DeveloperError : sampleHeight requires depth texture support. Check sampleHeightSupported.

##### Example:

    var position = new Cesium.Cartographic(-1.31968, 0.698874);
    var height = viewer.scene.sampleHeight(position);
    console.log(height);

##### See:

- Scene#clampToHeight
- Scene#clampToHeightMostDetailed
- Scene#sampleHeightMostDetailed

#### sampleHeightMostDetailed(positions, objectsToExclude, width) → Promise.<Array.<Cartographic>>
Scene/Scene.js 4344

Initiates an asynchronous `Scene#sampleHeight` query for an array of `Cartographic` positions using the maximum level of detail for 3D Tilesets in the scene. The height of the input positions is ignored. Returns a promise that is resolved when the query completes. Each point height is modified in place. If a height cannot be determined because no geometry can be sampled at that location, or another error occurs, the height is set to undefined.

Name | Type | Default | Description
--- | --- | --- | ---
`positions` | Array.<Cartographic> |  | The cartographic positions to update with sampled heights.
`objectsToExclude` | Array.<Object> |  | optional A list of primitives, entities, or 3D Tiles features to not sample height from.
`width` | Number | `0.1` | optional Width of the intersection volume in meters.

##### Returns:

A promise that resolves to the provided list of positions when the query has completed.

##### Throws:

- DeveloperError : sampleHeightMostDetailed is only supported in 3D mode.
- DeveloperError : sampleHeightMostDetailed requires depth texture support. Check sampleHeightSupported.

##### Example:

    var positions = [
        new Cesium.Cartographic(-1.31968, 0.69887),
        new Cesium.Cartographic(-1.10489, 0.83923)
    ];
    var promise = viewer.scene.sampleHeightMostDetailed(positions);
    promise.then(function(updatedPosition) {
        // positions[0].height and positions[1].height have been updated.
        // updatedPositions is just a reference to positions.
    }

##### See:

- Scene#sampleHeight