![]() ![]() The value in OffsetA will be added to the observer's elevation, whereas OffsetB will be added to the target. Additional offsets can be applied to the observation and target points by adding fields named OffsetA and OffsetB. For 3D line features, the observer and target elevation is solely obtained from the feature's geometry. ![]() The height of the observation and target points for 2D lines are interpolated from the surface with a default offset of 1 applied to the observer location so that it is above the surface. Visibility is determined along the sight line between these points, and any intermediary vertices in lines with more than two vertices are ignored. The first vertex defines the observation point, whereas the last is the observation target. ![]() The Line Of Sight tool calculates intervisibility between the first and last vertex of each line feature given its position in 3D space relative to the obstructions provided by a surface or multipatch feature class. Curvature and atmospheric refraction corrections. ![]()
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