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Index › Discussion › Exhibition › Verlet integration / ragdoll physics

alexmiller YaBB Newbies Offline Posts: 33 WA	Verlet integration / ragdoll physics Mar 21st, 2009, 6:41pm   http://shabbyduck.org/p/particlesystem/ An application of verlet integration for ragdoll style physics. I might write a tutorial on this technique, because it rocks!
	« Last Edit: Mar 22nd, 2009, 7:49am by alexmiller »

Diabeticrabbit Ex Member	Re: Verlet integration / ragdoll physics Reply #1 - Mar 22nd, 2009, 12:54am   Is it supposed to say error? I'm pretty sur my java is up-to-date.

cloister Full Member Offline Posts: 138	Re: Verlet integration / ragdoll physics Reply #2 - Mar 22nd, 2009, 4:22am   It's broken for me too. But I'd definitely be interested in a tutorial on the technique, because a) the wiki page made my head spin, and b) I'm always looking for good ways to speed up my gravity simulations, and this seems like a possibly great candidate.

alexmiller YaBB Newbies Offline Posts: 33 WA	Re: Verlet integration / ragdoll physics Reply #3 - Mar 22nd, 2009, 7:49am   Hmm... It works for me. Try this: http://shabbyduck.org/p/particlesystem/

Jack Perkins Junior Member Offline Posts: 99	Re: Verlet integration / ragdoll physics Reply #4 - Mar 22nd, 2009, 2:11pm   What luck! Someone pasted me this http://www.teknikus.dk/tj/gdc2001.htm earlier today. I've been trying to get two points connected by a stick for the last three hours but translating pseudo C code into Processing is proving over my head. Your example is clean and clear, this is really going to help me learn.

alexmiller YaBB Newbies Offline Posts: 33 WA	Re: Verlet integration / ragdoll physics Reply #5 - Mar 22nd, 2009, 5:27pm   Yes, I found the paper by Jakobsen pretty hard to follow, especially because it was in C. These slides from a presentation on verlet integration by Keith Peters were a great resource: http://www.bit-101.com/blog/?p=1566

Jack Perkins Junior Member Offline Posts: 99	Re: Verlet integration / ragdoll physics Reply #6 - Mar 22nd, 2009, 10:50pm   I think you should go ahead and do a write up on this using processing. If I came up against the AS animation slides I'm not sure I'd get what was going on, but the code would be easier to read, where as the code in the hitman example is unreadable but the explanation behind it is good.

Milind YaBB Newbies Offline Posts: 15	Re: Verlet integration / ragdoll physics Reply #7 - Mar 24th, 2009, 9:51pm   Nice simulation Alexmiller! I particularly liked the elegant way you defined the stick class. I had tweaked up a cloth simulation from one of the examples at http://www.cs.princeton.edu/~traer/physics/ see http://milindshastri.googlepages.com/Cloth_index.html Its quite a nice library and I think relevant too. Good luck.
	Milind&&http://milindshastri.googlepages.com/

Jack Perkins Junior Member Offline Posts: 99	Re: Verlet integration / ragdoll physics Reply #8 - Mar 25th, 2009, 11:28am   Hahah, I just hooked my own copy of your physics demo up to Daniel Shiffman's sudden motion sensor library http://www.shiffman.net/p5/sms/ Wheeeeee!

clankill3r Full Member Offline Posts: 210 Netherlands	Re: Verlet integration / ragdoll physics Reply #9 - Mar 25th, 2009, 2:15pm   Nice job! Only the rope is to elastic but it's about the ragdoll so I don't mind.