I did something exactly like this several years ago. If I can recall correctly, I had an animated cylinder inside the roll as a collision object, to help move the roll along, because the self-collision messes it up big time without it. Also this was pre-ICE, which could be a better solution for something like this, but try it first, it might do the trick, otherwise I wouldn't simulate it.
I had a similar problem recently with a project, an unfurling carpet of grass with a garden rolled up in it, but it needed to look billowy and light like a parachute or a deflated hot air balloon, it also had to roll up over itself since you could see it from the side in some shots, so it need to get smaller as it unrolled. Simulation just wasn't going to cut it, so I used a spiral curve to create the roll, lattices for larger sections of animation, ICE nodes for collision with the ground and turbulence, with a bunch of weight maps animated along with it. I think I might have even thrown in a wave or two. The setup took longer, but I could make changes in speed, wave size and turbulence in minutes as opposed to what it would have taken noodling with a simulation. https://vimeo.com/40608551 This is the spot it was used for. https://vimeo.com/42504313 Eric On Mon, Jun 4, 2012 at 9:24 AM, Alex Dinnin <adin...@gmail.com> wrote: > Afternoon All, > > I'm trying to unfurl a banner down the side of a building.. something a > bit like this > > http://www.youtube.com/watch?v=jI8ccSGghRY > > it needs to be quite a bit longer than the one in the video.. but > hopefully you get my meaning > > I've tried doing using Syflex and the basic cloth.. the main problem I > have is rolling it up to release it.. > > I've tried a rolled up grid, I've tried rotating.. but with out much luck > > The self collision seems to mess it up. > > I know in 2012 you can use Syflex in ICE.. but I only have 2010 > > Can anyone give me some pointers on how to do this... > > Any help would be greatly > > cheers > > -- > Alex Dinnin > > -- Freelance 3D and VFX animator
