Planetary System Tutorial - OpenGL Tutorials in Delphi

  In this tutorial we use two spheres, rendered using Quadrics , to show local and world coordinate systems.

The yellow sphere is the sun and the green sphere is earth.

Use "A" to stop autorun.
Use "L" to add days.
Use "K" to subtract days.
Use "J" to add years.
And "H" to subtract years.