Source: TIN layer

This panel for TIN layers is available only in the Desktop version.

Source panel for TIN layers

This layer is in SRS: Active only when the .dtproj file exists next to the layer. Please not that the .dtproj file will be removed when you uncheck this option.

OK  - Saves the modification you have made on this panel and closes the panel.

Undefined  - Opens the Select Projection dialog to set the known projection of the layer then displays the selected projection on this button. When adding a new layer to the map view DigiTerra Explorer assumes that its spatial reference system (SRS) is identical with the map view's SRS. When you select the known SRS to the layer on this panel DigiTerra Explorer on-the-fly transforms it into the map view's SRS and writes a .dtproj file next to the layer file. When the .dtproj file exists next to the layer it is Identified and you can see its projection parameters on this button.

Cancel  - Closes the Source panel

An overview is available about 3D related features at http://forum.digiterra.hu/viewtopic.php?f=59&t=310