Jump to content
kubabuk

Unroll The Surface

Recommended Posts

I am trying to roll and unroll the surface, some sort of "toilet paper" effect (sorry, that exactly describes what I am looking for). The crucial thing is to have the surface to start rolling from the tip (end point) not from the bottom, which is pretty simple to recreate using lsys. (have a look at the attached image)

I am looking for as simple solution as possible, trying to avoid dynamics, particles etc. so ideally I am interested in chops, expressions or some l-system neat expression. I also got a nice shape with a creep sop, creeping curve over a tube and using small translation on z to get a spiral, but from that point have no idea hot to unroll it... :)

anyway if any of you have some ideas, looking forward to them.

thanks

kuba

post-823-1196856282_thumb.jpg

Share this post


Link to post
Share on other sites
Video part 3 may help,

I tried something similar some time ago: unrolling a fern-like plant.

I tried to use spiral expressions (sin(x),cos(z)) with animated radii and centers.

All that curled was my brain ...

I just forgot about it, be rethinking it might be usefull to introduce some rotation as well.

Georg

Share this post


Link to post
Share on other sites

Thanks Symek, forgot about that, nice example but this is exactly opposite way I want to unroll. I am looking for the way the external part would stay in place and the core rotate and slowly unfold...

Share this post


Link to post
Share on other sites

I found an old, old tutorial from 1994..... (prisms time)

It's not exactly what you want, but it also covers some interesting points. ;)

post-77-1196926553_thumb.jpg

Edited by mike

Share this post


Link to post
Share on other sites

this is brilliant! Thanks! I was in high school and they where rolling carpets just like that... :huh:

Share this post


Link to post
Share on other sites

Hi all,

Thanks to mike for sharing, here's what I've come up to, the idea remains almost the same, but because houdini has change a little bit some things had to be worked around.

kuba

post-823-1210248438.gif

spiral_otl.hip

  • Like 2

Share this post


Link to post
Share on other sites

don't mean to hijack...but I did these awhile ago in Max MCG....I'm absorbing Houdini like a sponge as you might have noticed thru various posts and would one day hope to do these in Houdini...

Is there something already though ? Basically, given any spline(s), curl it (..well, curl a copy)...it was more challenging to do the curl vertically instead of flat on surface.

 

Edited by Noobini

Share this post


Link to post
Share on other sites

Nope, nothing out of the box. That's a very cool effect tho, nice chewy challenge to replicate in Houdini!

Share this post


Link to post
Share on other sites

any remote chance I have of tackling this in houdini would be via VOPs...coz I'm not a coder...that was same in Max, know nothing of maxscript so just wired nodes together. Need to at least double triple quadruple my current VOP experience tho...

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×