Animation: something breaks/cracks through ground

[jimcoldt]

Looks like using Reactor rigid bodies will do the trick...

[ChristophZollinger]

Reactor sucks on this.

I tried to cut / detach some pieces out of a plane, made all objects solid added them all to a rigid body collection.
Made a Dummy sphere, which shoul penetrate the plane. Added it to the RB-collection, too.

When I give all objects mass, they fall down in the simulation.
When I take a plane-primitiv (reactor) to prevent that, it says, the sphere is interpenetrating the plane.



Any other solutions, with some primitive particle systems and gravitation.

[mouj]

Howdy !

Seems to me that you're one lucky guy : )

http://www.3dtotal.com/team/Tutorials/cutting/cutting3.asp

this just came out, and might give you ideas

mouj

[ChristophZollinger]

Thanks a lot,

but that´s not, what I am looking for.

The dynamics in my scene should be more, for example, like a scene from "Starship Troopers" where the bug breaks through the ground.

But in my case the ground is no sand, but asphalt or concret.

[secretasianman]

man i had a great tutorial somewhere of a guy breaking a wall and you see his fist coming through.
if i can remember where i put it i can send it to you.
i have an idea for it but the fragments would look more like it was exploding coming out of the ground.
detach the ground pieces that you want to be destroyed from the main ground.
link a bomb to it. don't worry about the frags not deflecting because it will be covered by a superspray.
also put a visibility track on the ground pices so you can make them dissappear half way through the spray.
i hope you have a semi fast compy or it might slow a little in rendering.
set a superspray in the hole, link a gravity and wind deformable to it if you want.
create a deflector about the size of the main ground area.
link the deflector and the spray.
on the spray mess witht the particle formation spread so it will go out wide.
you can set another spray in there for added effect or you can have a sphere or something undet the area that you want to destroy so you can explode it and create more effect.

play with different settings and you will get a different effect.
i do stuff like this for exploding buildings and stuff but it has about the same effect.
if you want if i have the time i can put a small file together, to show you what i mean.

[ChristophZollinger]

Well I got a Dual Athlon MP 2400+, so lots of debris shouldn´t be the problem.
But I think the particle systems would not give the scene a realistic touch.
I think I have to render a layer with a lot of dust over it.

But I´ll check it that tomorrow.


But other ideas welcome.

[ChristophZollinger]

Okay,

after a lot of trial & error, I got a good solution, for my scene in this particular case.

I didn´t use reactor or the built-in dynamics for my animation.
Instead I used SimCloth Modifier for the whole animation.

At first sight It looks pretty fine and works for my.
Especially for short scenes it´s a good solution.
Mine is about 5 sec.

At the moment I am at work, but I´ll post a small Tutorial on this when I am back home.

SO be patient

[secretasianman]

cool i love hearing about things that people have done with sim cloth.
i used it while in animation school and poeple ragged on me for it.
alot of those students don't have jobs or probably never will in the industry.
when it somes to plugins you have to keep an opened mind, but not heavily rely on them.

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