I3SDataProvider

成员 Members

方法 Methods

返回： Returns:

示例： Examples:

try {
  const i3sData = await I3SDataProvider.fromUrl(
    "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/Frankfurt2017_vi3s_18/SceneServer/layers/0"
  );
  viewer.scene.primitives.add(i3sData);
} catch (error) {
  console.log(`There was an error creating the I3S Data Provider: ${error}`);
}

try {
  const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl(
    "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/EGM2008/ImageServer"
  );
  const i3sData = await I3SDataProvider.fromUrl(
    "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/Frankfurt2017_vi3s_18/SceneServer/layers/0", {
      geoidTiledTerrainProvider: geoidService
  });
  viewer.scene.primitives.add(i3sData);
} catch (error) {
  console.log(`There was an error creating the I3S Data Provider: ${error}`);
}

抛出： Throws:

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

另见： See:

• I3SDataProvider#isDestroyed

返回： Returns:

返回： Returns:

返回： Returns:

返回： Returns:

另见： See:

• I3SDataProvider#destroy

类型定义 Type Definitions

属性： Properties:

名称 Name	类型 Type	Attributes	默认值 Default	说明 Description
name	string	<可选> &lt;optional>		I3S 数据集的名称。 The name of the I3S dataset.
show	boolean	<可选> &lt;optional>	true	确定是否显示数据集。 Determines if the dataset will be shown.
geoidTiledTerrainProvider	ArcGISTiledElevationTerrainProvider | Promise.<ArcGISTiledElevationTerrainProvider>	<可选> &lt;optional>		描述地球引力模型的平铺高程提供程序。如果定义了，几何图形将根据该提供者给出的偏移量进行移动。需要将具有重力相关高度的 I3S 数据集放置在正确的位置。 Tiled elevation provider describing an Earth Gravitational Model. If defined, geometry will be shifted based on the offsets given by this provider. Required to position I3S data sets with gravity-related height at the correct location.
cesium3dTilesetOptions	Cesium3DTileset.ConstructorOptions	<可选> &lt;optional>		包含要传递给内部创建的选项的对象 Object containing options to pass to an internally created Cesium3DTileset。参见 . See Cesium3DTileset 获取有效属性的列表。所有选项都可以使用，除了 for list of valid properties. All options can be used with the exception of url and show 它们被 I3SDataProvider 中的值覆盖。 which are overridden by values from I3SDataProvider.
showFeatures	boolean	<可选> &lt;optional>	false	确定是否显示功能。 Determines if the features will be shown.
adjustMaterialAlphaMode	boolean	<可选> &lt;optional>	false	根据顶点颜色的透明度调整材质的 Alpha 模式的选项。当 The option to adjust the alpha mode of the material based on the transparency of the vertex color. When true，对于颜色顶点属性中具有任何透明度的几何体，材质的 alpha 模式（如果未定义）将设置为 BLEND。 , the alpha mode of the material (if not defined) will be set to BLEND for geometry with any transparency in the color vertex attribute.
applySymbology	boolean	<可选> &lt;optional>	false	确定是否将解析 I3S 符号系统并将其应用于图层。 Determines if the I3S symbology will be parsed and applied for the layers.
calculateNormals	boolean	<可选> &lt;optional>	false	确定是否为没有法线的 I3S 几何体生成平坦法线。 Determines if the flat normals will be generated for I3S geometry without normals.

示例： Examples:

// Increase LOD by reducing SSE
const cesium3dTilesetOptions = {
  maximumScreenSpaceError: 1,
};
const i3sOptions = {
  cesium3dTilesetOptions: cesium3dTilesetOptions,
};

// Set a custom outline color to replace the color defined in I3S symbology
const cesium3dTilesetOptions = {
  outlineColor: Cesium.Color.BLUE,
};
const i3sOptions = {
  cesium3dTilesetOptions: cesium3dTilesetOptions,
  applySymbology: true,
};