ShowThroughDistance

Determines the maximum distance of object's pivot from camera, in meters, beyond which it will not show through terrain, mesh layers, or objects that are hiding it. Set to -1 to enable show through at any distance when editing the object using e.g., IProjectTree80.EditItemEx. The following objects can show through terrain or objects: polygons, polylines, imagery and text labels, 2D shapes, 3D shapes, and polygon/polyline feature layers.