CgTalk:FXWars! Snow Avalanche Challenge:2

#21

mmm… im gunna giv this a go! just found a cool clip, looking for more.

eek

#22

yeah, using rocks with particles would result in a nice show

but what about the new particle system that comes with max6?

#23

PFlow is a “dumb” particles system. The particles doesn’t interact with one another (yet). But it’s definately the way I’d go about it if using max alone. Nice spawning features =)

#24

thought so, its better than the basic praticles by far but not good enough

some combination of reactor and pflow is the way to go I guess, I’m going to give it a try :slight_smile:

#25

This one looks like fun. Since i missed the last one, i’ll have to give this one a shot.

#26

i’ll try to be part of the war :wink:

#27
  1. You can work on your own.
  2. Nope. The simulation is the key. If you want to show a wireframe render of a snow avalanche, it is ok by me. But remmeber that this is a competition.
  3. Tor that is the topic suggestion thread.
  4. I would prefer an animation based on real life. The key of this micro challenge is that this is a simulation
#28

My advice…
[ul]
[li]Check tons of reference. Realism will score mayor browny points.[/li][li]Rent XXX and check out the avalanche in that movie.[/li]It was done by Digital Domain using Houdini, and they gave a couple of talks
[/ul]at SIGGRAPH about their work there. They talks might be online so look them up.

-R

#29

i got some questions too.

  1. when simulating a lot of rigid body´s and particels in maya the calculation almost comes to a halt when i try to do my avalanche. i would like to do my simulation in passes, like simulating the big chunks->bake to keys (obviously to ease computaion), then simulate the smaler chunks-> bake to keys again, so on so forth, and then simulating a bunch of partikle events and billowing flows. at the end i would have a lot of keys on the chunks but the animation would still be based on dynamic simulation wouldn´t it? Can i do it that way?

  2. wip animations. can they be uploaded to cgtalk. and if not do you know of free webspace that hasn´t got this anoying feature that you cannot link to the files that are bigger than 50 kb?

#30
  1. I see no problem
  2. Post WIP stils instead if you cant upload WIP animations.

-R

#31

is it or is it not?

#32

Looks like a fun challenge, might have a bash if i can find the time :slight_smile:

#33

I see no problem using real flow.
The keys is that the Avalanche is done using a Dynamics simulation.
-R

#34

The DVD also has a step by step on how they achieved that scene. Pretty interesting.

#35

ok so for us LW’ers, are were allowed to use the Start Frame # to trigger particles or collision at a certain time, in essence using a key but not really?
:stuck_out_tongue:

#36

So let’s see:

Siggraph Notes On Avalanche in xXx:

http://sydney.siggraph.org.au/conference/2002/html/sketches1.html

Other Stuff on that shot:

http://www.cgfocus.com/NewsDetails.cfm?NewsID=740

Time to learn those maya fluids…could be cool if we shared our knowledge as we go forward with that challenge.

#37

I se no problem with that.

-R

#38

thanks cobra :slight_smile:

b

#39

How about keyframes for camera shake?

#40

are u saying no key frames on anything that gets knocked over ? or moves ,surely you want to be able to add key frames on certain param’s,and combine it with a simulation because unless your using maya a lot of people are going to be at a disadvantage ? unless they happen to have a R&D team handy

B