LiTIN Editor

Summary

Provides editing operations for LiTin. It can be edited by various operations such as Add Single Point, Delete Single Point, Flatten, Delete Multiple Points, Add Breakline, Delete Breakline, Select Edge, Select Triangle.

toolbar
toolbarwin

Note: LiTin can be displayed by model, triangle or point (switching shortcut: W). It is recommended to use "triangular" display to see the editing effect. The model display tool is shown in the following figure.

mode

Usage

Click Terrain > LiTin Editing. The current activation window will show the LiTIN Editor toolbar.

Data Selection

Click Start Edit in the drop-down menu for editing. You can select one or more data which has/have been pre-opened in LiDAR360 for editing.

selectdata

Add Single Point

Left-click to add a vertex in the triangulation model. Users can select the source of the elevation value. This function is suitable for local editing.

addpoint
  • Height Source: The following four options are provided to define the height source.
    • From Surface (default): The elevation is determined by triangular interpolation.
    • Max Z From Surface: The maximum elevation of the model.
    • Min Z From Surface: The minimum elevation of the model.
    • As Specified: User input a customizded elevation.

Delete Single Point

Left-click to delete a vertex from the triangulation model, and reconstruct the triangulation with its neighboring points. This function is suitable for local editing, removing noise points or misclassified points intervening the generated terrain trend.

Flatten

Select the area to be flattened by mouse, or by inserting file with polygons. After the area to be flattened being selected, a table with the coordinates of that area will be shown.

flatten
  • Flatten Mode: According to the information in the table, users can choose the flatten mode, i.e., the same height mode or the adaptive height mdoe.
    • Same Height: If users choose the same height mode, the default value flattening elevation will be the average elevation of the triangulated network in the selected area. Users can manually change this value.
    • Adaptive Height: If users choose adaptive height mode, it assumes that the points (3 points) used to create the fitting plane are marked in the table. If users want to specify the elevation of coordinates, they can insert the elevation in the last column. It needs to be mentioned that users must insert elevation of three points. Because it needs three points to create the fitting plane.
  • Save the Flatten Boundary Points File: Users can save the boundary points' coordinates into a file, and insert that file to show the area to be flattened in the future.

Delete Multi Points

You can select a triangle area and delete the triangle inside the area. It is suitable for deleting noise points or misclassified points in a local area.

Add Breakline

Add breakline by mouse interaction. You can select the break line type, elevation value, and whether it is closed. This function is applicable to water bodies, highways and other situations where the terrain changes violently. It is used to distinguish the trend of the terrain around the fault line.

breakline
  • Line Type: Select the breakline to support the following types.
    • Soft Line(default): Soft breakline.
    • Hard Line : Hard breakline.
  • Height Source: Select the elevation to support the following types.
    • From Surface (default): The elevation is determined by triangle interpolation.
    • Max Z From Surface: The maximum elevation of the model.
    • Min Z From Surface: The minimum elevation of the model.
    • As Specified: User can enter a customized elevation.
  • Is Closed: Whether the breakline is closed as a polygon.
    • No (default): Do not close the breakline and save it as a polyline.
    • Yes: Close the breakline and save it as a polygon.

Delete Breakline

Delete the selected breakline.

Select Edge

Select the edge of a triangle. The selected edge will be displayed in red.

Select Triangle

Select a triangle. The selected triangle will be displayed in red.

Save

Save the editing results to a LiTin file.

Cancel

Discard the editting results and reload the original file to display.

Exit

Exit LiTIN Editor. If the editing result is not saved, the software will pop up the prompt window as shown below. Click Yes to save the editing result and exit. Click No to exit without saving the editing result. Click Cancel to return.

exitdialog

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