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General => Open Discussion => Topic started by: rcallicotte on May 12, 2013, 10:25:07 AM

Title: Lightning Slowed Down For Us to See
Post by: rcallicotte on May 12, 2013, 10:25:07 AM
http://petapixel.com/2013/05/11/incredible-high-speed-footage-of-lighting-captured-at-11000-frames-per-second/
Title: Re: Lightning Slowed Down For Us to See
Post by: TheBadger on May 12, 2013, 10:50:51 AM
Thats timely!  ;)

I was playing with this thing I found for maya. It shows how to use paint effects to make 3d lightning out of vines.

Never mind the colors.
[attach=1]
Title: Re: Lightning Slowed Down For Us to See
Post by: rcallicotte on May 12, 2013, 12:57:50 PM
Looks cool. Would like to see what you do.
Title: Re: Lightning Slowed Down For Us to See
Post by: Dune on May 12, 2013, 01:03:37 PM
If there's some mathematical ground to the bolt you constructed, the same math may be used to make procedural rivers (perhaps).......
Title: Re: Lightning Slowed Down For Us to See
Post by: TheBadger on May 12, 2013, 01:24:57 PM
QuoteLooks cool. Would like to see what you do.
Dont really know yet. Only posted the image cause you posted something that happened to be something I needed. I just thought it was funny that I dont even have to ask anymore, you guys just find the stuff I need on your own  ;) :D

QuoteIf there's some mathematical ground to the bolt you constructed, the same math may be used to make procedural rivers (perhaps).......
:-\
If your hoping for an intellgent responce from me, youll have to talk me through what ever it is you just said :o
:o

No really, what can I do with what you see here that may be of some use to you?

Title: Re: Lightning Slowed Down For Us to See
Post by: dandelO on May 12, 2013, 02:56:34 PM
I seem to remember Cypher making a planet-wide river system from warped Voronoi nodes a few years back, did you persevere with that, Richard? Seems to me you could do real magic with that these days.
Title: Re: Lightning Slowed Down For Us to See
Post by: Dune on May 13, 2013, 03:32:33 AM
Not wanting to hijack this thread, but the thing with (warped) voronoi is that it's a network, and what we really need is a thinning or thickening (soft!) line, where at certain intervals smaller side branches appear, where also again smaller side branches appear. Even if this is a straight 'tree' it can always be warped and maybe a few can be overlaid to form a braided river. Must be possible mathematically, but I'm a noob where it comes to A+B.
Title: Re: Lightning Slowed Down For Us to See
Post by: Tangled-Universe on May 13, 2013, 03:44:24 AM
You're talking about L-systems Dune and/or derivatives of that.

In Houdini for instance you can use L-systems to model your plants.
Using a set of mathematical rules to determine at what interval and rotation branching takes place.

Such research is also being done on rivers. Just go to ACM.org and start searching.
Title: Re: Lightning Slowed Down For Us to See
Post by: Dune on May 13, 2013, 03:55:31 AM
L-systems indeed, but how I could possibly translate that into a series of blue nodes is far beyond me.
Title: Re: Lightning Slowed Down For Us to See
Post by: Tangled-Universe on May 13, 2013, 06:05:57 AM
Quote from: Dune on May 13, 2013, 03:55:31 AM
L-systems indeed, but how I could possibly translate that into a series of blue nodes is far beyond me.

You're not the only one :)

I think it's not possible and if it would then it would probably be hideously complex (and likely mindbogging slow as well).
Title: Re: Lightning Slowed Down For Us to See
Post by: mhaze on May 13, 2013, 10:11:56 AM
You'd need to use recursion and you can't do that as far as I know with blue nodes.
Title: Re: Lightning Slowed Down For Us to See
Post by: Dune on May 13, 2013, 02:03:53 PM
Ok, I'll drop it. Back to normal(s).
Title: Re: Lightning Slowed Down For Us to See
Post by: rcallicotte on May 13, 2013, 11:15:37 PM
And here's lighting striking upward.

https://vimeo.com/30577412