This command works exclusively on terrain models to provide a line-of-sight distance from the eye position to an object. The line will change colors when the line encounters the terrain before reaching the object location. This denotes that the object cannot be seen from the eye position.

This command will construct a 3D line starting at the Eye Position and ending at the Object Position.

This tool is also used to generate line sight for the roadways. It uses a feature definition that allows you to specify the symbology that represents the sight distance achieved.

You can access this tool from the following:

Ribbon: Terrain > Analysis > Line of Sight

There are two methods available in the Line-of-Sight tool as explained below.

Single Line Method

This method will draw a single line from the Eye Position to the Object Position based on cursor input. You can pick a corridor, design or existing surface then select the height for the eye position from the existing surface. Then select the input object position. Accept the selection and a single line of sight is displayed. Where the green color line represents the visible sight, and the red color is a line of sight not visible from the object.

Radial Method

This method will draw a radial array of lines from the Eye Position to the Object Position based on cursor input. The radial method gives a 360-degree view of an object from a selected position.

The table below explains the parameter of the Radial method.