提供时间动态点云数据的回放.
点云框按平均帧负载时间和当前时钟速度决定的间隔预设. 如果中间帧无法及时装入以满足回放速度,它们会被跳过. 如果帧足够 小或时钟足够慢,则不会跳过帧.
| Name | Type | Description | ||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
options |
object |
下列属性的对象 :
|
Members
readonly boundingSphere : BoundingSphere
The bounding sphere of the frame being rendered. Returns
undefined if no frame is being rendered.
clippingPlanes : ClippingPlaneCollection
The
ClippingPlaneCollection used to selectively disable rendering the point cloud.
frameChanged : Event
这次事件是为了表明新框架已经打开.
The time dynamic point cloud TimeDynamicPointCloud is passed to the event listener.
-
Default Value:
new Event()
Example:
pointCloud.frameChanged.addEventListener(function(timeDynamicPointCloud) {
viewer.camera.viewBoundingSphere(timeDynamicPointCloud.boundingSphere);
});frameFailed : Event
该事件是为了表明一个帧未能装入. 如果
请求其uri失败或处理失败,因为内容无效.
如果没有事件听众,错误消息会登录到控制台.
传递给听众的错误对象包含两个属性:
uri: the uri of the failed frame.message: the error message.
-
Default Value:
new Event()
Example:
pointCloud.frameFailed.addEventListener(function(error) {
console.log(`An error occurred loading frame: ${error.uri}`);
console.log(`Error: ${error.message}`);
});
用于缓存点云帧的 NT 0 内存(以 MB 计) 最大值 .
未装入或制成的帧会被卸下以强制执行.
如果降低这一值导致卸下瓦片,则在下一个框架上卸下瓦片.
-
Default Value:
256
See:
modelMatrix : Matrix4
4×4变换矩阵变换点云.
-
Default Value:
Matrix4.IDENTITY
shading : PointCloudShading
基于几何误差和眼穹照明的控制点大小的选项.
shadows : ShadowMode
确定点云是投影还是接收来自光源的阴影.
赋能阴影具有性能影响. 投影的点云必须两次渲染,一次从镜头,另一次从光线的角度.
阴影只有在 Viewer#shadows 为 真 时才会渲染.
-
Default Value:
ShadowMode.ENABLED
确定点云是否会显示.
-
Default Value:
true
style : Cesium3DTileStyle
样式, 使用
3D Tiles Styling language,
适用于点云中的每个点.
Assign undefined to remove the style, which will restore the visual
当未应用样式时,点云出现到默认值.
Example:
pointCloud.style = new Cesium.Cesium3DTileStyle({
color : {
conditions : [
['${Classification} === 0', 'color("purple", 0.5)'],
['${Classification} === 1', 'color("red")'],
['true', '${COLOR}']
]
},
show : '${Classification} !== 2'
});See:
点云所使用的字节中的 NT 0 内存总量.
Methods
Destroys the WebGL resources held by this object. Destroying an object allows for deterministic
释放 WebGL 资源,而不是依赖垃圾收集器来摧毁此对象.
Once an object is destroyed, it should not be used; calling any function other than
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:
pointCloud = pointCloud && pointCloud.destroy();See:
如果此对象被销毁, 返回真实; 否则, 错误 .
If this object was destroyed, it should not be used; calling any function other than
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.
Marks the point cloud's
TimeDynamicPointCloud#style as dirty, which forces all
指点可以重新评价下一个框架中的样式.