You all remember of course our play with Ringworld scenes a couple of
years ago. I decided to investigate Banks Orbitals this time, from the
Culture novels by Iain M. Banks.
Here is a typical Orbital measuring 3 million km in diameter, 6000 km
wide, and with walls a 1000 km high. The Orbital is slightly inclined
upon its orbit, allowing for changing seasons with typically two winter
solstices when the Sun is partly hidden behind the Orbital. Th yellow
band in the sky is the path of the Sun across the year.
I include in a zip file (1) a 24 hours succession of views from above
the Orbital surface (you can make an animation if you want), (2) a scene
file and (3) an ini file to enable you to play. An attached image shows
one of the vistas.
I used Galaxy.inc by Chris Colefax for the star background, and CIE.inc
from the LightsysIV package for the Sun's colour. If you do not have
those, just replace by whatever is most convenient to you.
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Download 'orbital2.zip' (3561 KB)
Download 'orbital2_151.png' (296 KB)
Preview of image 'orbital2_151.png'