This command colors 3D faces for a surface for whether the 3D
face is either visible or hidden from a specified view point. The
3D faces need to be already drawn before running this command. The
3D faces can come from either a grid or triangulation surface. The
colors for visible and hidden are set in the dialog. The Eye Height
is added to the elevation at the View Point to set the elevation of
the viewer. The Target Height sets how high of an object the viewer
can see for the visible areas.
Graphic shows position of view point,
surface contours and 3D faces colored with yellow for visible
surface and blue for hidden surface.
Pick view point: pick point
Select 3D Faces to Analyze...
Select objects:
pick 3D faces
Pulldown Menu Location: Surface
Keyboard Command: viewshed
Prerequisite: 3D faces