The Offset Line tool creates a parallel line to your project item. It only works on the selected item and appears in the SELECTION - TOOLS tab.
Offset Line works on:
- Polyline items
- Boundary items
This tool can create parallel lines either on terrain or with a user specified Z offset.
Quick Guide
On terrain
- Select the line or boundary you want to offset.
- Go to the SELECTION - TOOLS tab and enable Offset Line in the Create group.
- In the dialog box, select the On Terrain Z Offset Method.
- Make a left-mouse click on the location where you want the offset line to appear. The vertices of the new line will be placed on the terrain.
- Each click creates an offset line to the original line.
- Make a right-mouse click to exit the Offset Line tool.
User Z offset
- Select the line or boundary you want to offset.
- Go to the SELECTION - TOOLS tab and enable Offset Line in the Create group.
- In the dialog box, select the ΔZ Offset Method and set the Z offset value. A positive value creates a line above the original item and a negative value creates it under the original item.
- Make a left-mouse click on the location where you want the offset line to appear. The vertices of the new line will be increased or decreased compared to the original elevation.
- Each click draws a parallels with the same Z offset.
- Make a right-mouse click to exit the Offset Line tool.
Usage
- Use the offset tool for road survey. In general, curbs and gutters are not accurately model in the photogrammetry results. That can lead to a bad water flows analysis. Draw a curb line and offset it to create an accurate surface model of the curb and the gutter. Use that surface to Modify Terrain and precisely shape gutter.
Tips and tricks
- When the Offset tool is enabled and a survey item is selected, you can click on another project item to switch the base object to offset.
- It's not possible to do multiple offset in the same time. Only one base object can be selected at a time.