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Hash, Inc. Forums > Technical Direction and Development (Learning Animation:Master) > A:M Tutorials and Demonstrations > Newton Physics
agep
I can't help it, but Newton amazes me

Click to view attachment
TheSpleen
sweet!
KenH
Quite ingenious set up. Do you have to adjust the weights of say, the domino that pushes the cart? You should youtube this IMO.
agep
Thanks
QUOTE(KenH @ Apr 22 2009, 04:07 PM) *
Do you have to adjust the weights of say, the domino that pushes the cart? You should youtube this IMO.
Yes I did, but not much. But I had to give much weight to the head of the hammer domino since the catapult weight pushes much weight on the three stacked dominos. I might post it, but I'll do an AO render of it first
johnl3d
Great ..this "Newton thing" seems to be causing a lot of interesting posts thanks for another one
largento
That's awesome, Stian. These Newton experiments are great fun.
robcat2075
"Mousetrap!"


That looks cool. You really ought to put Vern's ragdoll Thom in the catapult.
steve392
He he thats real good ,it work's a treat
Animus
Very nice, never tried Newton yet, but I am getting real curious.
Maybe have a "Newton Pass the Ball" some day.
http://www.youtube.com/watch?v=AQFFBCOv93I
I always like that one.

Michel
heyvern
Another great example of Newton.
I would feel very honored and proud if my recent obsession has inspired this new interest in Newton. That was my goal after all. wink.gif

p.s. What you guys don't know is that if you use Newton over extended periods of time there are subliminal flashes that will subconsciously put you in my control. I plan to take over the world.
(I wear special filters over my eyes to prevent "self hypnosis".)

-vern
mtpeak2
That's cool Stian.

How are the wheels on the cart turning? Is that from newton? Or do you have them rigged somehow?
nimblepix
Many good things going on here! Very cool!
serg2
Very cool!
agep
Thank you guys!

QUOTE(mtpeak2 @ Apr 23 2009, 01:31 AM) *
How are the wheels on the cart turning? Is that from newton? Or do you have them rigged somehow?
Everything is Newton, I just hit Simulate:) Although, the wheels and the chassis are separate models which are put together in the chor. I probably could have made it into one model, but this was a quick and dirty setup

Attached is an AO render of the same setup

Click to view attachment
Paul Forwood
More terrific stuff! smile.gif
heyvern
QUOTE(mtpeak2 @ Apr 22 2009, 06:31 PM) *
That's cool Stian.

How are the wheels on the cart turning? Is that from newton? Or do you have them rigged somehow?


The problem with "wheels" in Newton is the resolution of the "collision hulls" that are created by the plugin. They aren't "completely smooth" even on the highest setting. There will always be faceted bumps (the wheels on my newton car would get "stuck". The car would still move but the wheels would turn sporadically). The more dense your mesh the smoother the surface. The other problem is that Newton creates collision hulls based on the "shortest distance" between the outer dimensions of a mesh. If you have a curved arch that has no Newton groups with the resolution set to 16 the outer curve will be very smooth, but the inner part won't even "exist". It will "close off". It would be closed off completely unless you break it up into newton groups, but each newton group would also close inner curved surfaces based on the closest protruding parts of each group... so you need lots of newton groups to create a smooth curve on "inside" curved meshes. The only way to smooth the inside of curved meshes is to have lots and lots of Newton groups. Mesh density has no effect on inner curved shapes.

Default collision hull resolution 4. No Newton groups:
Click to view attachment

Sorry for protruding, please continue. wink.gif

-vern
John Bigboote
RUBE GOLDBERG!
Very cool stuff, Stian... this 'Newton' train is starting to take-off!
mtpeak2
Thanks for the explanation Vern.
animas3D
I love how you rigged the ball to be held on the top of the slide!
Jeetman
That was excellent!!!!
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