LiTIN Editor

Description

Provides irregular grid model LiTin for editing operations,provides adding single point, deleting single point, deleting multiple points, adding single fracture line, adding closed area (lake ) Break-lines, Add Double Region (River) breaklines, Delete breaklines, Select Edges, Select Triangles.

Note: Using the model display tool as shown in the figure below, you can display LiTin by model, triangle or point respectively (you can also use the letter key W on the keyboard to switch between different display modes). For easy viewing of editing effects, it is recommended to use the disclosure triangle to display LiTin.

Usage

ClickTerrain > LiTin Editor, the LiTin Editing bar will appear in the current activation window.

Select Edit File

After enabling LiTIN editing, select the data to be edited from the editable list on the left. The data to be edited must already be opened in LiDAR360 software, and only one dataset can be selected for editing at a time. After completing the current editing task, you can right-click in the list to directly start editing another dataset.

TIN Add single Point

Click the left mouse button to add a vertex and insert a single point into LiTin. The XY coordinates of the point are determined by the mouse click. The sources of elevation values include triangulation surface, maximum surface elevation, minimum surface elevation and user input. This function is suitable for local area editing, intervening in the contour trend of this area.

• Height Source: This parameter defines the elevation value of the added point.
  • From Surface (default): The elevation of the insertion point is determined by triangular interpolation.
  • Max Z From Surface: The maximum value of the range of elevation values within this model.
  • Min Z From Surface: The minimum value of the range of elevation values within this model.
  • As Specified: User input custom elevation value.

TIN Delete Single Point

Left mouse click to delete a vertex, delete a single point from the LiTin model, and reconstruct the triangulation network with adjacent points. This function is suitable for local area editing, removing noise points or misclassified points, and intervening the contour trend of this region.

TIN Delete Multi Points

Select an area interactively with the mouse, and the triangulation network points in the area will be deleted in batches, causing local triangulation network reconstruction. It is suitable for local area editing. It can delete noise points or misclassified points in batches according to the polygon range, and intervening the contour trend of this region.

Fill Hole

By interacting with the mouse to select an area, any holes within the selected region will be filled. Note that this operation only supports single-step undo and redo. Any subsequent operations performed after the hole-filling action will clear the undo/redo steps.

Breakline of Water Area

Interactively draw a closed area through mouse interaction or select existing closed vector lines from the current scene, set parameters, and click the Add button to complete the addition.

• User Define: Users can manually input values or activate the selection button to pick points in the scene for elevation setting. Defaults to the elevation of the last drawn point.

• Auto Elevation: Automatically calculates based on pixel elevations within the range.

  • Average: Takes the average pixel elevation within the selected range.

  • Maximum: Takes the maximum pixel elevation within the selected range.

  • Minimum: Takes the minimum pixel elevation within the selected range.

  • Percentile: Takes the percentile value of pixel elevations within the selected range.

  • Calculate Based on Selected Vector: Only valid when using scene vector selection. Calculates the average elevation of the selected vector as the parameter.

Breakline of Gradual River

Interactively draw two bank lines (must be drawn in the same direction), set parameters, and click the Add button to complete the addition.

• Start Elevation: Defines the starting elevation value of the river. Defaults to the elevation of the starting point of the second bank line. Users can manually input values or activate the selection button to pick points in the scene for elevation setting.
• End Elevation: Defines the ending elevation value of the river. Defaults to the elevation of the ending point of the second bank line. Users can manually input values or activate the selection button to pick points in the scene for elevation setting.

Linear Breakline

Interactively draw a polyline through mouse interaction, set parameters, and click the Add button to complete the addition.

• Breakline Type: This parameter defines the type of breakline.
  • Soft Breakline (default)*: Soft breakline.
  • Hard Breakline*: Hard breakline.
• Change Elevation: Not checked by default. Available for hard breaklines only. Determines whether to modify elevations of breakline points.
  • Start Elevation*: Defines the starting elevation value for hard breaklines. Users can manually input values or activate the selection button to pick points in the scene for elevation setting.
  • End Elevation*: Defines the ending elevation value for hard breaklines. Users can manually input values or activate the selection button to pick points in the scene for elevation setting.

Import Breaklines

Click the Import Breaklines button, set parameters, click to complete addition, and wait for execution.

• BreaklineS File: Select the breakline vector file from the directory tree or from external sources.
• Layer Name: Select the specific layer to use. The layer type should be closed polylines.
• Area Type: area types include: Flat type (buildings, lakes, etc.) and gradual type (rivers).
• Elevation: Select automatic elevation calculation method: Average, Maximum, Minimum, or Percentile.

TIN Delete Breaklines

Interactively delete selected breaklines through mouse interaction.

TIN Select Edge

Interactively select triangle edges through mouse interaction. Selected edges are displayed in red.

TIN Select Triangle

Interactively select triangles through mouse interaction. Selected triangles are displayed in red.

TIN Save

Save editing results to LiTin file.

Cancel TIN

Cancel editing, discard editing results, and reload the original file for display.

Undo

Undo (hotkey **Ctrl+Z**). Undo single modification with a limit of 20 undo operations.

Redo

Redo (hotkey **Ctrl+Y**). Redo single modification with a limit of 20 redo operations.

Exit

Click the Exit button on the toolbar to exit LiTin editing. If editing results haven't been saved, click Exit or click End Editing in the edit button popup menu. The software will display a prompt window as shown below. Click Yes to save editing results and exit, click No to exit directly without saving, or click Cancel to return.