构建CView
容器对象
Gets or sets whether or not data sources can temporarily pause animation in order to avoid showing an incomplete picture to the user. For example, if asynchronous primitives are being processed in the background, the clock will not advance until the geometry is ready.
Gets the Animation widget.
Gets the BaseLayerPicker.
背景图层容器
Gets the DOM element for the area at the bottom of the window containing the {@link CreditDisplay} and potentially other things.
Gets the camera.
摄像机高度发生显著变化（超过10000米）的事件
Gets the canvas.
Gets the CesiumWidget.
Gets the clock.
Gets or sets the data source to track with the viewer's clock.
Gets the clock view model.
Gets the parent container.
等值线图层容器
Gets the display used for {@link DataSource} visualization.
Gets the set of {@link DataSource} instances to be visualized.
Gets the collection of entities not tied to a particular data source. This is a shortcut to [dataSourceDisplay.defaultDataSource.entities]{@link Viewer#dataSourceDisplay}.
站点图层容器
Gets the FullscreenButton.
Gets the Geocoder.
栅格图层容器
地表图层容器
Gets the HomeButton.
Gets the collection of image layers that will be rendered on the globe.
Gets the info box.
标签图层容器
Gets the NavigationHelpButton.
Gets the post-process stages.
Gets the ProjectionPicker.
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.
Gets the scene.
Gets the SceneModePicker.
Gets the screen space event handler.
Gets or sets the object instance for which to display a selection indicator.
If a user interactively picks a Cesium3DTilesFeature instance, then this property will contain a transient Entity instance with a property named "feature" that is the instance that was picked.
Gets the event that is raised when the selected entity changes.
Gets the selection indicator.
Get the scene's shadow map
Determines if shadows are cast by light sources.
Gets or sets the target frame rate of the widget when useDefaultRenderLoop
is true. If undefined, the browser's {@link 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.
The terrain provider providing surface geometry for the globe.
Determines if the terrain casts or shadows from light sources.
Gets the Timeline widget.
地图上用于绘制的工具服务
顶层地图容器
顶层图层容器
Gets or sets the Entity instance currently being tracked by the camera.
Gets the event that is raised when the tracked entity changes.
Boolean flag indicating if the browser's recommended resolution is used. If true, the browser's device pixel ratio is ignored and 1.0 is used instead, effectively rendering based on CSS pixels instead of device pixels. This can improve performance on less powerful devices that have high pixel density. When false, rendering will be in device pixels. {@link Viewer#resolutionScale} will still take effect whether this flag is true or false.
Gets or sets whether or not this widget should control the render loop.
If set to true the widget will use {@link 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, {@link 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.
Gets the VRButton.
默认参数
通过图层配置进行图层的批量载入
Destroys the widget. Should be called if permanently removing the widget from layout.
Extends the base viewer functionality with the provided mixin. A mixin may add additional properties, functions, or other behavior to the provided viewer instance.
The Viewer mixin to add to this instance.
Flies the camera to the provided entity, entities, or data source. If the data source is still in the process of loading or the visualization is otherwise still loading, this method waits for the data to be ready before performing the flight.
The offset is heading/pitch/range in the local east-north-up reference frame centered at the center of the bounding sphere. The heading and the pitch angles are defined in the local east-north-up reference frame. The heading is the angle from y axis and increasing towards the x axis. Pitch is the rotation from the xy-plane. Positive pitch angles are above the plane. Negative pitch angles are below the plane. The range is the distance from the center. If the range is zero, a range will be computed such that the whole bounding sphere is visible.
In 2D, there must be a top down view. The camera will be placed above the target looking down. The height above the target will be the range. The heading will be determined from the offset. If the heading cannot be determined from the offset, the heading will be north.
The entity, array of entities, entity collection, data source, Cesium3DTileset, point cloud, or imagery layer to view. You can also pass a promise that resolves to one of the previously mentioned types.
A Promise that resolves to true if the flight was successful or false if the target is not currently visualized in the scene or the flight was cancelled. //TODO: Cleanup entity mentions
This forces the widget to re-think its layout, including widget sizes and credit placement.
async版本的camera.flyTo，简化了传值方式
经度
纬度
高度，单位是米
true if the object has been destroyed, false otherwise.
Renders the scene. This function is called automatically
unless useDefaultRenderLoop is set to false;
Resizes the widget to match the container size.
This function is called automatically as needed unless
useDefaultRenderLoop is set to false.
Asynchronously sets the camera to view the provided entity, entities, or data source. If the data source is still in the process of loading or the visualization is otherwise still loading, this method waits for the data to be ready before performing the zoom.
The offset is heading/pitch/range in the local east-north-up reference frame centered at the center of the bounding sphere. The heading and the pitch angles are defined in the local east-north-up reference frame. The heading is the angle from y axis and increasing towards the x axis. Pitch is the rotation from the xy-plane. Positive pitch angles are above the plane. Negative pitch angles are below the plane. The range is the distance from the center. If the range is zero, a range will be computed such that the whole bounding sphere is visible.
In 2D, there must be a top down view. The camera will be placed above the target looking down. The height above the target will be the range. The heading will be determined from the offset. If the heading cannot be determined from the offset, the heading will be north.
The entity, array of entities, entity collection, data source, Cesium3DTileset, point cloud, or imagery layer to view. You can also pass a promise that resolves to one of the previously mentioned types.
A Promise that resolves to true if the zoom was successful or false if the target is not currently visualized in the scene or the zoom was cancelled.
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基于Cesium Viewer的视图
{IMap}