Step 2: generate terrain buffer

TIN Terrain Cache is used to Generate Cache files for TIN Terrain data and optimize the display and browsing effects of TIN Terrain data.

Select Build 3D Tile in the DatasetContext Menu.
The Build 3D Tile dialog box pops up to Add Data and Set Parameters. The Dataset selected by default has been added in the list. If you need to add another Raster Dataset, click to pop up the Select dialog box. The All Data source in the current Workspace is listed on the left side of the dialog box. The right side lists all the Datasets in the Datasource. The user can use the toolbar above the dialog box to filter and search the required Dataset. After selection, click the "OK" button to return to the "Generate Scene Cache" "dialog box.
Click to pop up the "Password Settings" dialog box, enter the password in the dialog box, and click OK to encrypt the generated data.
In the Build 3D Tile dialog, you can see the selected Dataset displayed in the list.
Toolbar:
- All: After selecting all Dataset in the data list, you can perform batch operations on the Dataset, such as deleting and Batch Settings caching parameters.
- Invert: Select the unselected Dataset in the data list.
- Delete: Removes the Dataset from the Current Data list.
- Set Password: is the generated 3D TilesSet Password. The 3D Tiles data after Set Password requires a password to be entered when it is opened. Click the Set Password "button, enter the same password in the Password and Confirm Password boxes, and then click Confirm to complete the Password Settings. It is important to note that only the Compact Storage Format supports Set Password.
Data list area:

Dataset: shows the Dataset Name used to generate the TIN Terrain cache.
Datasource: shows the name of the Datasource where the Dataset used to generate the TIN Terrain cache is located.
Cache Type: shows the type of 3D cache to be generated, in this case, TIN Terrain ". The Cache Type is a Drop-down Button. All Cache Types supported by the selected data are listed in the drop-down list, and the user can select from them.
Scene Type: Scene Type is divided into spheres.

Cache Name: In the text box to the right of the Cache Name ", enter Cache Name, which is the name of the cache root directory.
Cache Path: Enter the Export Directory of the cache in the text box to the right of "Cache Path:", either a local path or a network path. The user can also Select Path with the Browse button behind the text box.
Storage Type: The system provides 2 Cache types, compact and primitive. The compact representation uses a certain compression and encryption mechanism to compress and encrypt the data when the cache is established. Raw means that the data is not compressed and the original information of the data is retained. A block store represents a Data Save in fixed-length blocks.

Block size (pixels): 32 * 32, 64 * 64, and 128 * 128 are available. The default is 64 * 64.
Start Layer, End Layer: The layer number is obtained automatically. Both the start layer and the end layer can be modified. The supported modification range is between the layer numbers obtained automatically.
Fine layer error: enter the error value directly in the text box, and the unit is meter.
Number of Threads: Set the number of threads participating in the Generate Cache to make cache generation more efficient.
Whether to compress when Generate Cache: The "Compression" check box is checked by default, and the user can decide whether to check it.
Whether to generate with normal line: The "with normal line" check box is not checked by default, and the user can decide whether to check it.
High precision: The "Compression" check box is checked by default. Only high-precision TIN data supports TIN-related operations, such as Extract 3D Data (TIN).
Preserve Precision Value: The "With Normal" check box is not checked by default, and the Preserve Original Data Pre cision value. After checking, the errors of the end layer and the fine layer will change. It is mainly aimed at DEM Data with high precision value.

Check the "Default" check box to use the range of Dataset by default. The four text boxes on the upper left and lower right display the system Default range.
Users can Custom Bounds without checking the "Default" checkbox. There are two ways, one is to take the range of the selected Dataset by selecting Bounds Dataset. The other is to enter the range value directly in the upper left and lower right text boxes.

"Show Progress Bar" is checked by default. Click the "Generate" button to execute the TIN Terrain cache generation operation. Each TIN Terrain cache is stored in a separate folder, where *.sct is the cache Config File.

When setting Cache Bounds, if the "Default" check box is not checked, the text boxes at the bottom left and top right become editable, and you can directly enter the required Cache Bounds.