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General => Image Sharing => Topic started by: AP on December 21, 2016, 07:20:27 PM

Title: Cumulonimbus test
Post by: AP on December 21, 2016, 07:20:27 PM
This is the first test done just yesterday. The overall general shape is present, however much more needs to be finished. For example, the anvil is lacking in proper shape, the lower cloud bank needs to look more like convective cumulus, the anvil edges could use some feathery cirrus outflow and thinning as you get near the edges, the thunderhead convection itself looks to straight in some parts, and now what works. The overall shape is present as said, the scale is proper of a thunderhead based on the tallest ones known, about 21,000 meters at there tops, the width of the storm is correct for average storms even though it may not look like it here and there is billowy patterns but they could stand to be more tightened.
Title: Re: Cumulonimbus test
Post by: Dune on December 22, 2016, 01:58:05 AM
Very cool. Must have taken some time to render with that height?
Title: Re: Cumulonimbus test
Post by: AP on December 22, 2016, 02:10:44 AM
Thank you. It was around four and a half hours to render.
Title: Re: Cumulonimbus test
Post by: Dune on December 22, 2016, 02:13:53 AM
That's pretty much indeed (for me, anyway).
Title: Re: Cumulonimbus test
Post by: archonforest on December 22, 2016, 03:55:50 AM
Very nice!
Title: Re: Cumulonimbus test
Post by: mhaze on December 22, 2016, 05:52:35 AM
Nice work!  Looking forward to seeing how this progresses.
Title: Re: Cumulonimbus test
Post by: fleetwood on December 22, 2016, 09:14:56 AM
Looks good. Seems like it has a lot of potential.
Title: Re: Cumulonimbus test
Post by: DocCharly65 on December 22, 2016, 10:17:53 AM
Quote from: AP on December 22, 2016, 02:10:44 AM
Thank you. It was around four and a half hours to render.

OUCH! not ideally suited for an animation.
But very impressive work!
Title: Re: Cumulonimbus test
Post by: bobbystahr on December 22, 2016, 12:36:23 PM
Whew, I dunno if it would even render on this old dell. You gonna share when yer done? Would love to try this on the Corsair
Title: Re: Cumulonimbus test
Post by: AP on December 22, 2016, 05:13:12 PM
Quote from: bobbystahr on December 22, 2016, 12:36:23 PM
Whew, I dunno if it would even render on this old dell. You gonna share when yer done? Would love to try this on the Corsair

I intend to share when there is a satisfactory enough point to consider it. I can not say how soon that will be though. The anvil still does not look right, the billows need to be more tight and sharp and there is still too much break-up.
Title: Re: Cumulonimbus test
Post by: bobbystahr on December 22, 2016, 09:17:15 PM
Quote from: AP on December 22, 2016, 05:13:12 PM
Quote from: bobbystahr on December 22, 2016, 12:36:23 PM
Whew, I dunno if it would even render on this old dell. You gonna share when yer done? Would love to try this on the Corsair

I intend to share when there is a satisfactory enough point to consider it. I can not say how soon that will be though. The anvil still does not look right, the billows need to be more tight and sharp and there is still too much break-up.

May I say in the spirit of self interest, good luck man.
Title: Re: Cumulonimbus test
Post by: AP on December 23, 2016, 07:46:26 AM
A sky mushroom which is interestingly enough a part of the work in progress.
Title: Re: Cumulonimbus test
Post by: bobbystahr on December 23, 2016, 09:35:03 AM
Quote from: AP on December 23, 2016, 07:46:26 AM
A sky mushroom which is interestingly enough a part of the work in progress.

mmmmm, mushrooms
Title: Re: Cumulonimbus test
Post by: DocCharly65 on December 24, 2016, 07:15:56 AM
Couldn't it be a marshmellow cloud? Pleeeease!  ;D
Title: Re: Cumulonimbus test
Post by: AP on December 25, 2016, 09:14:20 PM
It could be...

Working on lighting tests here but still lacking those dark edges.
Title: Re: Cumulonimbus test
Post by: AP on January 03, 2017, 03:59:58 AM
Additional adjustments need to be tested and still working out the anvil tops aka thunderheads.
Title: Re: Cumulonimbus test
Post by: luvsmuzik on January 03, 2017, 10:02:00 AM
I am sure you are looking for "that one effect", but the last two are beautiful clouds.
Title: Re: Cumulonimbus test
Post by: AP on January 04, 2017, 11:08:32 PM
I am somewhat puzzled by some of the Easy cloud patterns. The low lying cloud is Stratocumulus using full coverage but with a puzzling separation of noisy billowy details and very bright areas. The center cloud is Cumulus using full coverage and the large-scale features look a bit puzzling as I was hoping for a more tight pattern with less large-scale feature gaps. The noisy billowy details from the Stratocumulus is more what I have in mind for the Cumulus Congestus type cloud.
Title: Re: Cumulonimbus test
Post by: bobbystahr on January 05, 2017, 01:13:52 AM
They are a tough nut to crack but hopefully the update that I thought was in like December but that's passed, will include the more fleshed out options promised.
Title: Re: Cumulonimbus test
Post by: AP on January 05, 2017, 02:16:30 AM
Indeed they are, however for now I would like to have the Cumulonimbus clouds at a point of being satisfactory.
Title: Re: Cumulonimbus test
Post by: Matt on January 05, 2017, 02:36:18 AM
Quote from: AP on January 04, 2017, 11:08:32 PM
I am somewhat puzzled by some of the Easy cloud patterns. The low lying cloud is Stratocumulus using full coverage but with a puzzling separation of noisy billowy details and very bright areas. The center cloud is Cumulus using full coverage and the large-scale features look a bit puzzling as I was hoping for a more tight pattern with less large-scale feature gaps. The noisy billowy details from the Stratocumulus is more what I have in mind for the Cumulus Congestus type cloud.

It looks as though your voxel buffer resolution is much, much too low for the density of your cloud. This is what's causing such large scale bright areas and dark areas which don't correspond to the detail in the clouds. The voxels are spread out over the localisation region, so keep that as small as you can and then increase the number of voxels if you're stil not getting enough detail in the scattered light.

Matt
Title: Re: Cumulonimbus test
Post by: AP on January 05, 2017, 02:51:33 AM
That seems to be working little by little. The voxels were at 30 and I increased them to 90. I recall doing this before and Terragen crashed so I have to be careful how high I can go.
Title: Re: Cumulonimbus test
Post by: Matt on January 05, 2017, 03:08:59 AM
Yeah, that's why it's important to keep the cloud (localisation radius) as small as possible to get the most use out of the voxels. Going from 30 million to 90 million voxels will only make a small visual difference.
Title: Re: Cumulonimbus test
Post by: Matt on January 05, 2017, 03:12:27 AM
You'll get better results if you don't try to make one cloud layer go all the way to the horizon. You can always use a separate layer for the distant clouds.
Title: Re: Cumulonimbus test
Post by: AP on January 05, 2017, 04:02:20 AM
The local radius is at 50,000 meters. I suppose I can cut that down more. Thank you for the help.
Title: Re: Cumulonimbus test
Post by: AP on January 05, 2017, 04:32:18 AM
This is set at 75 million voxels and it appears to look fairly good. At 50 million voxels, I started seeing the issue reappear. The localization radius was left at 50,000 meters.
Title: Re: Cumulonimbus test
Post by: Dune on January 05, 2017, 12:22:13 PM
Quite a difference indeed.
Title: Re: Cumulonimbus test
Post by: AP on January 05, 2017, 09:18:48 PM
The left side is set at 30 million voxels and the right side is set at 75 million voxels.
Title: Re: Cumulonimbus test
Post by: bobbystahr on January 05, 2017, 09:42:01 PM
Quote from: AP on January 05, 2017, 09:18:48 PM
The left side is set at 30 million voxels and the right side is set at 75 million voxels.

Yup for where you seem to be heading you've hit the 'sweet spot' at 75 million
Title: Re: Cumulonimbus test
Post by: Matt on January 06, 2017, 12:09:34 AM
Very confusing!
Title: Re: Cumulonimbus test
Post by: AP on January 06, 2017, 01:08:57 AM
Quote from: Matt on January 06, 2017, 12:09:34 AM
Very confusing!

In what way?
Title: Re: Cumulonimbus test
Post by: Matt on January 06, 2017, 04:22:44 PM
The big difference between the first, second and third renders. The lighting in Stratocumulus test 1.png with 75 million voxels is not showing much internal scattering, just a broad ambience, so I thought you would need to increase resolution in some way. But the latest 75 million voxel render is doing much better. It looks like some other settings changed, perhaps the density. If they didn't, then I don't really understand what's happening.

Matt
Title: Re: Cumulonimbus test
Post by: AP on January 06, 2017, 10:41:36 PM
Quote from: Matt on January 06, 2017, 04:22:44 PM
The big difference between the first, second and third renders. The lighting in Stratocumulus test 1.png with 75 million voxels is not showing much internal scattering, just a broad ambience, so I thought you would need to increase resolution in some way. But the latest 75 million voxel render is doing much better. It looks like some other settings changed, perhaps the density. If they didn't, then I don't really understand what's happening.

Matt

For Stratocumulus test 1.png, I changed the Sun glow amount and Sun glow power to a lower setting.
Title: Re: Cumulonimbus test
Post by: AP on January 14, 2017, 06:19:56 AM
Mammatus type clouds as they can appear underneath the Cumulonimbus cloud base and as well as underneath the anvil itself.
Title: Re: Cumulonimbus test
Post by: Dune on January 14, 2017, 07:35:52 AM
Those are really nice.
Title: Re: Cumulonimbus test
Post by: luvsmuzik on January 14, 2017, 10:09:29 AM
Those clouds usually mean something is gonna change, but they are fascinating to watch. Beautifully done.
Title: Re: Cumulonimbus test
Post by: Oshyan on January 14, 2017, 04:15:54 PM
Is that TG?? If so it's the best mammatus I've seen! Please share. :D

- Oshyan
Title: Re: Cumulonimbus test
Post by: Kadri on January 14, 2017, 05:27:05 PM

Those clouds look great.
Title: Re: Cumulonimbus test
Post by: AP on January 15, 2017, 12:51:16 AM
I intend to share this soon.
Title: Re: Cumulonimbus test
Post by: AP on January 15, 2017, 03:38:50 AM
A more stormy type of Mammatus cloud.
Title: Re: Cumulonimbus test
Post by: Hannes on January 15, 2017, 04:33:38 AM
Wow, cool! Agree with Oshyan. I'm not sure if anyone has ever made (recognizable) Mammatus clouds at all here.
Title: Re: Cumulonimbus test
Post by: bobbystahr on January 15, 2017, 12:21:33 PM
AP the Cloud Walker...awesome, can't wait for the share....Be nice if this could be incorporated into the TG cloud selector
Title: Re: Cumulonimbus test
Post by: AP on January 16, 2017, 05:27:24 PM
There will be a set when I am finished.
Title: Re: Cumulonimbus test
Post by: bobbystahr on January 16, 2017, 05:37:45 PM
They're awesome, good to hear. Thanks in advance.