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General => Image Sharing => Topic started by: DJ on February 06, 2009, 03:23:32 PM

Title: colored strata
Post by: DJ on February 06, 2009, 03:23:32 PM
I am still playing around with layered rocks. Here's my last result:

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Title: Re: colored strata
Post by: PG on February 06, 2009, 03:27:20 PM
This is really cool, the twisting rocks along with the strata layers is kinda freakin me out. The green tinted transparency fits here too.
Title: Re: colored strata
Post by: efflux on February 06, 2009, 05:38:38 PM
Very cool rock strata.
Title: Re: colored strata
Post by: DJ on February 06, 2009, 05:46:37 PM
a detailed view of the rocks:

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Title: Re: colored strata
Post by: rcallicotte on February 07, 2009, 11:22:31 AM
Nice and clean.  Good color and great lighting.
Title: Re: colored strata
Post by: arisdemos on February 07, 2009, 07:53:14 PM
Very impressive strata and coloring. If it is not too much to ask, just what is your TG2 recipe for this lovely layered earth/rock cake?
Title: Re: colored strata
Post by: DJ on February 08, 2009, 03:51:49 AM
Here's the tgd-file
If you are doing any further development, please share the results with us.

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Title: Re: colored strata
Post by: PG on February 08, 2009, 04:31:49 AM
Sweet. I'll take a look at this when I get back from work. I'm actually working  on a canyon scene with a guiding hand from TU so it'll be cool to get some layered effects like these into it.
Title: Re: colored strata
Post by: Volker Harun on February 08, 2009, 07:05:40 AM
Now I get your idea ,-) Good work so far!
Title: Re: colored strata
Post by: arisdemos on February 08, 2009, 03:43:35 PM
Your strata is so impressive that I will be sure and use it like right now, and I will post whatever is produced with credit given to your procedure. Thanks.
Title: Re: colored strata
Post by: Kevin F on February 09, 2009, 11:27:00 AM
Thanks for the file, nice approach.
One drawback I've found though is that by using such extreme displacements you cant apply fake stones to these scenes. Can you?
Title: Re: colored strata
Post by: mr-miley on February 09, 2009, 11:53:40 AM
Wouldn't you be able to add a compute terrain node after all the displacement and then add your fake stones etc? Mind you I may well be talking out of my backside (as per)  ;D

Miles
Title: Re: colored strata
Post by: DJ on February 09, 2009, 12:09:36 PM
Fake Stones are exactly the problem that I am working at the moment.
Thank you Miles for your idea, I will try this.

Dietmar
Title: Re: colored strata
Post by: Kevin F on February 10, 2009, 03:23:12 AM
Quote from: mr-miley on February 09, 2009, 11:53:40 AM
Wouldn't you be able to add a compute terrain node after all the displacement and then add your fake stones etc? Mind you I may well be talking out of my backside (as per)  ;D

Miles

tried that with limited success, the stones are there but the shapes are still very distorted and more like patches of colour on the terrain. Increasing size just makes them worse.
Title: Re: colored strata
Post by: DJ on February 10, 2009, 03:58:26 AM
I made the same experience.
It seems there is principally a problem to combine redirected terrain with fake stones.
Title: Re: colored strata
Post by: DJ on March 05, 2009, 06:58:22 AM
Now with tilted strata:

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(see also http://forums.planetside.co.uk/index.php?topic=5664.0 (http://forums.planetside.co.uk/index.php?topic=5664.0))
Title: Re: colored strata
Post by: Tangled-Universe on March 05, 2009, 07:23:43 AM
Quote from: dj7901366 on February 10, 2009, 03:58:26 AM
I made the same experience.
It seems there is principally a problem to combine redirected terrain with fake stones.


Yes and no. Yes because the reason for this is not really intuitive/obvious. Technically it is 'no''.
The reason that fake stones don't look good or behave as expected when being displaced is because all displacements 'before' the fake stones are incorporated into the fake stones. Often resulting in flat stones or weirdly displaced ones.

The solution for this is to create a surfacelayer which acts as a base for the fake stones. That means you will have to add fake stones as a child layer of this surface layer (disable color of the surface, you don't need it).
If you enable the smoothing function in the last tab of the surface layer all the displacement up to the latest compute terrain will be included as being the base for the fake stones. Now your fake stones should behave as expected.

I hope this is a bit clear, cuz I'm not really sure how this describe this entirely correct. Nevertheless, it should work :)

Martin
Title: Re: colored strata
Post by: DJ on March 05, 2009, 06:14:12 PM
Thank you Martin.
I tried this but it did not work.
If I set the smooth-parameter to 1.0, the stones are diplayed correct but the redirect-effect of the terrain gets lost.
If the smooth-parameter ist lower than 1.0, the stones are distorted again.
What did I wrong ?

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Title: Re: colored strata
Post by: Tangled-Universe on March 05, 2009, 06:36:27 PM
Thanks for posting the .tgd. Makes problem solving lots easier.
It's bedtime now so I'll take a look at this tomorrow.

Martin
Title: Re: colored strata
Post by: Tangled-Universe on March 05, 2009, 07:01:27 PM
Ok, figured it out, couldn't resist taking a look at it :)
Here's a very slightly adjusted .tgd.
I moved the compute terrain before the fake stones base layer.
Also attached an image for comparison.
Hope this will get you back on track with your project.

Martin
Title: Re: colored strata
Post by: Luminos on March 06, 2009, 12:02:52 AM
Without knowing alot about t2 I've been trying to create this effect for a while. Would you be able to write a tutorial for this one or link me to one? Otherwise great picture, Keep up the good work
Title: Re: colored strata
Post by: DJ on March 06, 2009, 10:20:08 AM
Thank you Martin for your solution.
The problem is, that the terrain is still affected by the smoothing of the last surface:

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@Luminos
As far as I know there is currently no tutorial for the tilted noise surfaces.
When all problems are solved I will try to summarize my experiences.
Title: Re: colored strata
Post by: Tangled-Universe on March 06, 2009, 11:09:41 AM
Quote from: dj7901366 on March 06, 2009, 10:20:08 AM
Thank you Martin for your solution.
The problem is, that the terrain is still affected by the smoothing of the last surface:

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@Luminos
As far as I know there is currently no tutorial for the tilted noise surfaces.
When all problems are solved I will try to summarize my experiences.

I know :( You could already see it in the example-image I showed you.
When I've time I'll try to take a look at it for a solution.
Maybe you could play with reducing the smoothing effect or increase the displacement-values before the compute terrain to get the roughness back, but then I'm not sure if the stones will still be that smooth (they should be however).

Martin
Title: Re: colored strata
Post by: DJ on March 06, 2009, 05:11:34 PM
I found a workaround that leads to acceptable results:

The trick is to limit the smoothing to the same max. slope as the fake stones are limited.
The flattened area around the stones now looks a bit like alluvial sands, not so bad.
On the other side the structures in the steeper regions are not affected.

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Here's a detail of the lower left region:

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Title: Re: colored strata
Post by: Tangled-Universe on March 06, 2009, 05:53:24 PM
Great to see you've figured it out even further :)
If I understand correctly you just used the slope-restrictions in het surfacelayer?
If not could you show then?

Martin
Title: Re: colored strata
Post by: DJ on March 07, 2009, 03:31:09 AM
I just connected the distribution shader of the fake stones as a blending shader with the underlying surface.
This is the final tgd:
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Dietmar