Step 2 Generate Terrain Tiles

Feature Description

TIN Terrain tiles are used to generate tile files for TIN Terrain data, optimizing its display and browsing performance.

Steps

  1. Select "Build 3D Tiles" from the dataset context menu.
  2. The "Build 3D Tiles" dialog appears for adding data and setting parameters. The default selected dataset is already listed. To add other raster datasets, click . The "Select" dialog will display all data sources in the current workspace on the left, and all datasets within the selected data source on the right. Use the toolbar above to filter or search datasets. Click "OK" to return after selection.
  3. Click to open the "Password Settings" dialog. Enter and confirm the password to encrypt generated data.
  4. The selected datasets will be displayed in the list within the "Build 3D Tiles" dialog.
  5. Toolbar functions:
    • Select All: Batch select datasets for operations like deletion or batch tile parameter settings.
    • Invert Selection: Select unselected datasets in the list.
    • Delete: Remove datasets from the current list.
    • Set Password: Assign passwords to 3D tiles. Password-protected tiles require authentication when opened. Note: Only "Compact" storage format supports password protection.
  6. Data list section:
    • Dataset: Shows names of datasets used for generating TIN Terrain tiles.
    • Data Source: Displays the data source containing the selected dataset.
    • Tile Type: Drop-down list showing supported 3D tile types (default: "TIN Terrain").
    • Scene Type: Currently supports spherical scenes only.
  7. TIN Terrain tile parameters:
    • Tile Name: Enter root directory name for tiles.
    • Storage Path: Specify export directory (local/network path) or use "Browse" button.
    • Storage Type: Options: Compact (compressed/encrypted), Original (uncompressed), Block Storage (fixed-length blocks).
    • Block Size (Pixels): Options: 32*32, 64*64 (default), 128*128.
    • Start/End Level: Modify level range within automatically detected limits.
    • Precision Layer Error: Input error tolerance in meters.
    • Process Thread Count: Set thread number for tile generation efficiency.
    • Enable Compression: Compression checkbox (enabled by default).
    • Generate Normals: Normals checkbox (disabled by default).
    • High Precision: Enabled checkbox ensures TIN operations compatibility (e.g., 3D data extraction).
    • Preserve Precision: Disabled checkbox. When enabled, adjusts end level and precision error for high-accuracy DEM data.
  8. Tile bounds configuration:
    • Check "Default" to use dataset extent (displayed in coordinate boxes).
    • Uncheck to customize bounds: Select boundary dataset or manually input coordinates.
  9. With "Show Progress Bar" checked by default, click "Generate" to create TIN Terrain tiles. Each tile is stored in separate folders with *.sct configuration files.

Notes

  1. When customizing tile bounds (with "Default" unchecked), coordinate boxes become editable for manual input.