Buoyancy Simulation [EDITED]

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Buoyancy Simulation [EDITED]

Postby mlazo » Fri Sep 24, 2010 10:28 am

Hi All!
Here is few videos of current state of the buoyancy simulation from my Physics module. The current implementation uses Newton Game Dynamics 2.23 and Impromptu Graphics Engine. calculate the buoyancy forces and buoyancy center to apply the forces. The method allow to simulate various objects.

first version:

http://www.youtube.com/watch?v=TL3464dxwc0


http://www.youtube.com/watch?v=8887cItyxWg
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on board cam:

http://www.youtube.com/watch?v=9XUnog_sorI

boat interacting with variuos objects:

http://www.youtube.com/watch?v=TdvJ1aBg3kc
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Some new videos from my buoyancy module:


http://www.youtube.com/watch?v=pVaMCkUZyqI


http://www.youtube.com/watch?v=DdA0Mo8tsUw


Greetings!!
Last edited by mlazo on Tue Aug 09, 2011 1:58 pm, edited 1 time in total.
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Re: Buoyancy Simulation

Postby Julio Jerez » Fri Sep 24, 2010 1:38 pm

wow bery nice boat simulation. Cool.
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Re: Buoyancy Simulation

Postby mlazo » Fri Sep 24, 2010 1:39 pm

Thanks! Julio
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Re: Buoyancy Simulation

Postby Julio Jerez » Fri Sep 24, 2010 1:41 pm

I fixed the youtube links so the they show up.
I also like the tornado simulation youo have in you site, tha was very coll.
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Re: Buoyancy Simulation

Postby mlazo » Fri Sep 24, 2010 3:17 pm

8) Thanks ! and Thanks for fix the videos!
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Re: Buoyancy Simulation

Postby Carli » Fri Sep 24, 2010 5:10 pm

Why are the objects so stable?
In my Buoyancy simulation, everything makes extreme movements.
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Re: Buoyancy Simulation

Postby mlazo » Fri Sep 24, 2010 8:31 pm

i'm calculating the buoyancy force and the point of action of these force with my own physics module. I'm not using the buoyancy funcionality of NGD. Only use NGD for apply the forces calculated.
Greetings
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Re: Buoyancy Simulation

Postby Navalny » Mon Jul 18, 2011 11:31 am

Hi mlazo, very impressive work! Are there any further references to your work, such as publications, for example? I'm really interested in your buoyancy engine, so it would be nice if you could shed some more light on your algorithm, if possible. :)
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Re: Buoyancy Simulation

Postby mlazo » Tue Jul 26, 2011 2:26 pm

i'm waiting for review of a journal :| . When they publish my article i will share a draft.
Thanks !
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Re: Buoyancy Simulation [EDITED]

Postby rvangaal » Mon Aug 20, 2012 5:05 am

Just incase people come by here; there's a very interesting article in Game Programming Gems part 6, chapter 2.5, on Exact Buoyancy for Polyhedra. This explains calculating the center of force, plus volume calculation of the underwater bit (though for a flat plane). The force is then easy.
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