[Sidefx-houdini-list] noob procedural animation

Olivier Jeannel facialdeluxe at gmail.com
Mon Feb 8 02:29:44 EST 2016


what would be a nice beginner tutorial for chops ?

On Mon, Feb 8, 2016 at 12:01 AM, Alex Czetwertynski <disciple1 at gmail.com>
wrote:

> Gary
>
> If you take the Copy stamping approach to doing this, you can randomize
> easily using expressions, but you have to get your head around the concept
> of stamping, which is tricky at first because it doesn't flow downwards.
> See here for example
> https://www.youtube.com/watch?v=UfRH42lHgEI
>
> You can stamp any parameter pretty much, so number of pipes, direction and
> speed of revolve are pretty straightforward.
>
> When it comes to more hardcore animation, you will probably get a kick out
> of CHOPS, even though they are not obvious at first, but overall the idea
> is that you send your anmation channels to a whole separate environment
> where you can procedurally modify them.
>
> Let us know if this helps.  Happy to look at a scene file if you want to
> put dropbox link one.
>
> Alex
>
>
>
>
> On Sun, Feb 7, 2016 at 3:07 PM, François Duchesneau <sidefx at trinix.ca>
> wrote:
>
> > Hi Gary,
> >
> > It's a bit hard to know what you're missing but make sure you read enough
> > on stamping, groups, attribute manipulation like promoting and all the
> > different attribute xyz nodes in sop.
> >
> > When I started to learn Houdini for the first time (I'm still learning
> > everyday) there weren't much tutorials around apart from a pdf on
> L-system
> > and few others. However I've learned most of the foundation by looking at
> > the example files that come with most of the nodes.
> >
> > For example, make sure you've been through a few of them on the Copy Sop
> > node.
> >
> > This is a right place for asking questions. I myself prefer the mailing
> > list however keep in mind there's no way to add attachments here.
> >
> > Cheers
> >
> > Francois
> >
> > On 02/07/2016 12:43 PM, Gary Jaeger wrote:
> >
> >> OK, I’ve been going through the docs and vimeo vids to start to get up
> to
> >> speed in houdini. Good stuff. I thought I’d give myself a little
> procedural
> >> test to see if I actually understood some basic concepts - and I failed.
> >> Here is the simplified maya version of what I was trying to do:
> >>
> >> https://www.dropbox.com/s/e0vj28oin3lpbke/maya_proc.mov?dl=0
> >>
> >> But what I really wanted was to make myself a little tool with sliders
> to
> >> control:
> >>
> >> random scalex of the cross sections of the pipes
> >> experiment with number of pipes
> >> experiment with direction and speed of the pipe revolve
> >> experiment with timing of the pipe’s rotations into place
> >>
> >> I don’t necessarily want individual control of each element. Rather
> >> overall speeds with variance.
> >>
> >> I got as far as creating a plane, copying (or duplicating? Which is
> >> better in this case?) and revolving them. But I couldn’t figure out the
> >> random parts (I tried attribute randomize but it didn’t work). Also my
> >> revolves ended up being a single group that I couldn’t see how to rotate
> >> individually.
> >>
> >> Anyway, I know I could build this just like I did in maya, with
> basically
> >> all individual elements. But I figured there had to be a clean, elegant
> way
> >> in houdini. Any tips to lead me down the right path?
> >>
> >> Thanks.
> >>
> >> (by the way, is this best place or should I be in the sidefx forums? I
> >> prefer mailing lists but not really sure where the party’s at)
> >>
> >>
> >> Gary Jaeger // Core Studio
> >> 249 Princeton Avenue
> >> Half Moon Bay, CA 94019
> >> 650.728.7957 (direct)
> >> 650.728.7060 (main)
> >> http://corestudio.com <http://corestudio.com/>
> >> _______________________________________________
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> >>
> >
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>
>
>
> --
> |||| Alex Czetwertynski ||||
> |||| c - 213 268 71 85  ||||
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