I love it... nice job! :)
Just one thing... is it possible to add shadows (ie: shadow of the moon on
earth)? ;)
Jack
Florin Herinean
<fherinean@PUBLITY. Pour :
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Envoy� par : Objet : [JAVA3D] Again about the
solar system.
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20/01/03 13:42
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Hello everybody,
Maybe some of you got bored because of my emails, but I have just added
some
new nice features to my solar system model.
http://www.seelenbinder-schule.de/~fherinean/solar_system_applet.html
1. All the planets display now correct textures, so they look quite similar
to what you see in the pictures.
2. The light is correctly comming from the sun and not from an arbitrary
position. Now you can watch the phases of the planets.
3. The orbits of Mercury and Pluto are tilted with the correct angles.
4. Mercury, Mars and Pluto features correct elliptical orbits.
5. All the planets are spinning with proportional speeds.
6. The spinning axes of the planets are tilted at the correct angles. You
can watch Uranus spinning at 97 degrees.
7. *right* clicking on a planet in the left list shows an information
dialog
where astronomical information is provided. Further clicking on the "View"
button, will bring into the main view that planet featuring a high
resolution texture. Warning: that operation may be longer because of the
size of the textures, some of them of 250 kb.
I hope you'll enjoy playing with it, it makes a good didactical program,
nice to show to your children. Good to notice, I haven't remarked any
significant reducing of the performances, despite the use of the textures
and additional behaviors. My favourite watching position is the "left"
view,
no orbits, zoomed in somewhere close to the Saturn orbit.
What was left out intentionally, for the sake of observability, so that it
doesn't make a real simulator:
a) the planets are moving too fast compared to the spinning time.
b) the sizes of the planets are not proportional. All the planets have been
magnified compared to the sun, the magnification factor the bigger the
smaller the planet.
c) the orbits are too close to the sun.
d) the intensity of the light of the sun is constant, regardles of the
distance.
Cheers,
Florin
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