Facility Properties | Place Properties | Target Properties

Defining the Slope of the Local Terrain

Terrain Slope properties allow you to define the slope of the local terrain. Begin by selecting the Method for determining the normal to the local terrain.

Method	Description
Surface Normal	The normal to the terrain is along the local surface normal. This is equivalent to having a slope of zero. The Terrain Grazing Angle constraint becomes equivalent to the Elevation Angle constraint.
Slope/Azimuth	Use input values of slope and azimuth to compute normal to the local terrain. Specify the Slope of the local terrain, defined as the angle between the normal to the local terrain and local surface normal, where the local surface normal is defined by the reference shape of the globe. Specify the Azimuth (measured in an easterly sense from local north) of the normal to local terrain. This may also be thought of as the azimuth of the "downhill" direction.

Method

Description

Surface Normal

The normal to the terrain is along the local surface normal. This is equivalent to having a slope of zero. The Terrain Grazing Angle constraint becomes equivalent to the Elevation Angle constraint.

Slope/Azimuth

Use input values of slope and azimuth to compute normal to the local terrain.

Specify the Slope of the local terrain, defined as the angle between the normal to the local terrain and local surface normal, where the local surface normal is defined by the reference shape of the globe.
Specify the Azimuth (measured in an easterly sense from local north) of the normal to local terrain. This may also be thought of as the azimuth of the "downhill" direction.