Unfortunately, a Linux version is not yet available.
InstallationEphemeris can be installed by unzipping the files into your choice of subdirectory. The demos can be executed by running the corresponding Ephemeris_*Demo.bat file.
CommandsThe ephemeris demo has two windows, one that is the main frame window and a child window that contains the rendered scene. The commands will only be processed if the render window is active, that is, if you have clicked on it. (This may appear to be a lousy user interface, but it is intended so that you can move the mouse in the main window without having your scene affected). The following commands are available:
The movement keys are like Quake, and, like Quake, the mouse turns left and right or up and down. Holding down shift will make the movement keys move in smaller increments.
NotesThe island demo may take a minute or two to load up (it is creating all the trees). Since it is drawing about 1 million vertices, the framerate could be better: I get about 8 fps on a GeForce DDR and an Athlon 750. An ATI Rage 128 gets about .4 fps. Sorry about the bad framerate but I haven't had time to optimize it further...