Subdivide the orbit into sections and compute a bounding volume for each section. The bounding volumes used are capsules, the set of all points less t

Initializes GtkActions and creates main menu */

Helper function for CreateProceduralCubeMap; return the normalized vector pointing to (s, t) on the specified face.

ENTRY: Navigation -> Eclipse Finder */

ENTRY: Navigation->Goto Object */

ENTRY: Dialog initializer */

ENTRY: Navigation -> Solar System Browser... */

ENTRY: Navigation -> Star Browser... */

ENTRY: Navigation->Tour Guide... */

ENTRY: Options -> View Options... */

Show the planetocentric latitude, longitude, and altitude of a observer.

CALLBACK: "SetTime/Goto" in Eclipse Finder */

! Convert body-centered ecliptic coordinates to spherical planetocentric * coordinates. */

Estimate the fraction of light reflected from a sphere that reaches an object at the specified position relative to that sphere. This is function is

UTILITY: Converts a binary label mode to individual keys */

UTILITY: Converts a binary orbit mask to individual keys */

UTILITY: Converts a binary render flag to individual keys */

The body-fixed coordinate system has an origin at the center of the body, y-axis parallel to the rotation axis, x-axis through the prime meridian, and