3D布告板
    
| Name | Type | Default | Description | 
|---|---|---|---|
| center | Position | 布告板中心点 | |
| size | Cesium.Cartesian2 | new TS.Cartesian2(1,1) | 可选的 布告板的大小 | 
| rotate | Number | 0 | 可选的 布告板朝向正北顺时针的角度 // * @param {Number} [heading=0] 布告板的俯仰角,以水平为0,正为上,负为下 | 
Extends
Members
    获取 或 设置 是否支持穿透选择
- Inherited From:
    获取 或 设置属性
- Inherited From:
    获取 或 设置 是否自动朝向相机方向
    设置 或 获取 布告板底部中心点的位置
    获取CesiumEntity对象
- Inherited From:
    描述
- Inherited From:
    获取 或 设置 是否可编辑
- Inherited From:
    获取 或 设置 俯仰角
    获取 name
- Inherited From:
    获取父类
- Inherited From:
onMouseClick : Event
    鼠标点击订阅
- Inherited From:
onMouseDBClick : Event
    鼠标双击订阅
- Inherited From:
onMouseLeave : Event
    鼠标离开订阅
- Inherited From:
onMouseOver : Event
    鼠标悬浮订阅
- Inherited From:
    订阅鼠标右键点击
- Inherited From:
onOverlayAdded : Event
    覆盖物添加订阅
- Inherited From:
onOverlayRemoved : Event
    覆盖物移除订阅
- Inherited From:
    获取底层Id
- Inherited From:
    设置 或 获取朝向正北顺时针的角度
    获取 或 设置 自动旋转的模式
    获取 或 设置是否显示
- Inherited From:
    设置 或 获取布告板的大小
state : State
    获取状态
- Inherited From:
Methods
addTo(layer) → Overlay
    快速添加到图层中
    
| Name | Type | Description | 
|---|---|---|
| layer | Layer | 
Returns:
- Inherited From:
delete() → Overlay
    删除图层
Returns:
- Inherited From:
    飞行到覆盖物
- Inherited From:
setBottomCircle(radius, style, rotateAmount) → Billboard
    设置底面范围圆
    
| Name | Type | Description | 
|---|---|---|
| radius | Number | 半径 | 
| style | Style | 可选的 圆样式,参考CesiumEllipse | 
| rotateAmount | Number | 可选的 动画 | 
Returns:
setLabel(text, textStyle) → Overlay
    设置Label
    
| Name | Type | Description | 
|---|---|---|
| text | stirng | |
| textStyle | 
Returns:
- Inherited From:
    设置样式
    
| Name | Type | Description | 
|---|---|---|
| style | Cesium.WallGraphics | 样式 | 
setVLine(style) → Billboard3d
    设置垂直引线
    
| Name | Type | Description | 
|---|---|---|
| style | Cesium.PolygonGraphics | 引线样式 | 
Returns:
    保存为Geojson
Returns:
- Inherited From:
    缩放到覆盖物
- Inherited From:
