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richardnovak77
07-25-2004, 08:58 AM
hey folks,

i saw there's a great tutorial on the tutorial page about creating amazing 3d clouds using hypervoxels. those look great!

now, is there a way to automate and randomize the process?

i'd like to create a hypervoxel generator somewhere in the scene which spits out random groups of hypervoxels, and i'd like to be able to adjust the appearance and randomize it just a little beforehand.

example:

the scene i'm rendering should have big white fluffy clouds in it, not too many but average. it's a blue-sky spring day. i adjust the settings and the cloud maker spits them out to render.

next scene takes place on a cold winter day. i want the clouds whispy and thin, high up. stratus? cirrus? something like that. i adjust the settings and cloud creator does the rest.

finally, a rainy scene. i need the clouds to blend in with my gray sky, but i want them darker on the bottom, so thick shadows.

does this sound possible? is there already a plugin which can automate this process? or does each cloud need to me made one at a time?

thanks for your patience!

erikals
04-02-2005, 09:18 AM
Ok, this was a loong time ago, and this might not be the solution, but you might find this guys work is interesting...
http://www.asahi-net.or.jp/~pq1a-ogs/taiki_e.html

Can make interesting smoke as well>
http://www.asahi-net.or.jp/~pq1a-ogs/pttest3.mpg

ColdLogic
10-10-2007, 12:00 PM
Anyone up to speed on doing sky renders with clouds that have depth which can be passed through using the camera?

I know high quality clouds could be rendered from HV but if there are other options which will save on render times, I would be open to suggestions.

I'm looking to cover a few hundred square miles of space with a high altitude motion shot which ultimately tracks down to ground level.

Thank you for your help!

erikals
10-10-2007, 01:11 PM
posting 2 years later ha? :)

There was a method to it, maybe using a gradient to dissolve the clouds..
I remember a post on it that was using the Taiki plugin, but you can do it with native hypervoxels too.

It was either posted at this forum or at,
http://www.cgtalk.com/forumdisplay.php?f=5
(note, this site seams to be down atm, try a bit later)

search="Taiki"

If you are wondering about Taiki in general, I would much rather recommend "Ozone 3" that just came out, just as good or better, but more importantly Way more easy to set up.
http://www.e-onsoftware.com/products/ozone/ozone_3.0/

ColdLogic
10-10-2007, 01:29 PM
I'm a total noob on the forums here. So thank you very much for responding to the post. I'll look into that plug-in.

It appears for the distance stuff, I may be able to use a flat polygon with a cloud texture on it.

I can then use the hypervoxels for close-up shots for depth. We'll see how it turns out!

OOZZEE
10-10-2007, 02:03 PM
VUE 6 - great clouds there ! and cheaper ozone 3.

Phil
10-10-2007, 02:10 PM
The Taiki plugin appears to be dead in any case. No Mac version, no Win64 version.

Sande
10-10-2007, 02:37 PM
posting 2 years later ha? :)
Well, I've done some cloud fly-bys in the past and my guess is that ColdLogic started that project 2 years ago and the first preview rendering just finished... ;)

ColdLogic, as I implied those hypervoxels can be pretty heavy on the rendering. My advice is to cut corners everywhere you can and, if possible, to do lot of the work in post processing stage. Using hypervoxels only on close ups is a good idea! :)

erikals
10-10-2007, 02:56 PM
hehe, could be,.. could be... :)

AbnRanger
10-12-2007, 08:52 AM
Dynamite is another option to look into:
http://www.cantarcan.com/v11/html/main.html

It's more comparable to Afterburn for 3ds Max, so you'll get the most control and best looking effects/clouds with it.

Ozone 3 or Vue 6 would be fine for medium to long range distance views...and can achieve "decent" fly throughs, but I have yet to see anything that doesn't look blatantly CG from either. It's a big leap from their previous versions, but I wouldn't consider it if your objective is to get the highest level of photo-realism.

And by the way, any volumetric-related renders will ALWAYS be a cpu-taxing effort...no easy way to get around it for realistic clouds

erikals
10-12-2007, 10:12 AM
Yup, also Jeremy posted a Dynamite HV preset somewhere...
somewhere..

Stooch
10-16-2007, 02:55 PM
You can populate your scene with objects of random sizes and cloud like shapes. then use an object emitter from vertices and very light sprite voxel settings to do what you want. with proper particle settings and a little bit of wind you can even have a nice little drifting cloud scene. maybe a few collider objects to push clouds away or effectors to tug on them might also come in handy.

btw you could probably even make cloud container objects with light collisions to gently nudge them around even. give it a shot