Author Topic: Smooth combiner tutorial  (Read 3840 times)

Offline wiwine

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Smooth combiner tutorial
« on: August 13, 2014, 06:07:00 PM »
Before the next part of my dunes tutorial, here is another one that could be useful in some situations (when you have to combine function-generated terrains).
First I wanted to put it in the other tutorial, but I realized that it could be better to present it separatly.

Enjoy !  ;)


Offline archonforest

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Re: Smooth combiner tutorial
« Reply #1 on: August 13, 2014, 06:24:06 PM »
Holly cow...I opened the PDF and still shocked :D Feels like missed some class in school... :D :D :D
Guess bigben will understand thit document...

Otherwise big thx for the tut. Something that is always welcome here :)
...many rooms to explore but the doors look the same...

Offline bigben

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Re: Smooth combiner tutorial
« Reply #2 on: August 13, 2014, 11:15:45 PM »
Yes I like to see the workings behind it, but it's also a deceptively simple tweak with only one parameter to adjust.

Offline Dune

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Re: Smooth combiner tutorial
« Reply #3 on: August 14, 2014, 06:57:15 AM »
Thanks Laurent, you're obviously good at maths. Handy thing to have, waiting to be used.
In case you still haven't seen enough of my work: www.ulco-art.nl

Offline cyphyr

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Re: Smooth combiner tutorial
« Reply #4 on: August 14, 2014, 09:09:08 AM »
My brain just melted. Hopefully I can find the time to understand this in more detail.

One question, can this (or a similar technique be used to "smooth" out other hard transitions?  In particular I am thinking of the merge node.
When this is set to "Choose by Altitude <highest (raise)/Lowest (cut away)>" it creates very HARD transitions between the two merged terrains. It would be great if these could be smoothed off

Thanks for the great tut.
www.richardfraser.co.uk
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Offline wiwine

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Re: Smooth combiner tutorial
« Reply #5 on: August 14, 2014, 12:04:58 PM »
One question, can this (or a similar technique be used to "smooth" out other hard transitions?  In particular I am thinking of the merge node.
When this is set to "Choose by Altitude <highest (raise)/Lowest (cut away)>" it creates very HARD transitions between the two merged terrains. It would be great if these could be smoothed off

I just made a test with two fractal terrains and a merge shader. This time I didn't use the high/low colour options to generate the terrains.
But I added a "displacement shader to scalar" to each fractal terrain.
Just take a look to the following file, and try to render with the following values for c : 0, 100 and 200.
Then tell me if it is what you are looking for.  :)

Offline Dune

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Re: Smooth combiner tutorial
« Reply #6 on: August 14, 2014, 02:37:40 PM »
Works like a charm. At first I thought, what can a 1m extra displacement change, but it smoothes out the fractals' edges very nicely. Thanks a lot, very handy!
In case you still haven't seen enough of my work: www.ulco-art.nl

Offline cyphyr

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Re: Smooth combiner tutorial
« Reply #7 on: August 14, 2014, 04:18:58 PM »
What Dune said!

Excellent work, this is going to be so useful.

Thank you very much.
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Offline Shigawire

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Re: Smooth combiner tutorial
« Reply #8 on: August 14, 2014, 05:44:38 PM »
Wiwine, yet again I am in awe... you are a Terragen master mentat! :D

p.s. I can see why you needed to come up with this before continuing the Dune tutorial series.. ;)

Offline j meyer

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Re: Smooth combiner tutorial
« Reply #9 on: August 15, 2014, 02:43:59 PM »
Thanks for sharing the example files.

Offline bobbystahr

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Re: Smooth combiner tutorial
« Reply #10 on: September 01, 2014, 02:32:59 PM »
Whew, thanks mate....Back to school today it seems....
something borrowed,
something Blue.
Ring out the Old.
Bring in the New

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