Dune test

Started by CCC, January 23, 2010, 11:09:58 pm

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CCC

Another try at creating dunes. I added a luminosity noise for some sparkle in the sand grains as well.

folder

thanks for the hard work and sharing

david

Dune

I would repeat the ridged fractal on a smaller scale (less displaced of course), mixed with some medium scale perlin, instead of the lines.

CCC

But there are dunes like this with the lines running through the main features as that was the inspiration. The pattern i can not get is this. In the image notice how there elongated but nice and wavy as well. The small scale lines appear to be soft clamped and that is also hard to get down.


domdib

Have you had a look at Tangled-Universe's sand shader at NWDA? His sand comes in ridged patterns.

CCC

I have and not exactly the patterns i am looking for. I might keep attacking this some more.

Henry Blewer

Martin's dunes use a sine based node network, I think. These would need a sawtooth based node set up.
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

DJ

I tried to combine the basic terrain from here with the technique described in this thread:

http://forums.planetside.co.uk/index.php?topic=843.0

DJ

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CCC

Looks good so far. I do recall that thread before it was buried. The crest function ideas were nice. Too bad that never happend.

Henry Blewer

This is looking good. The only problem is the downwind side of the dunes. They should be smoother. I have not found a way to do this yet.
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T

mogn

Quote from: njeneb on January 24, 2010, 08:43:30 am
Martin's dunes use a sine based node network, I think. These would need a sawtooth based node set up.

Henry Blewer

I had to grab this screen shot! Thanks for posting it. 8)
http://flickr.com/photos/njeneb/
Forget Tuesday; It's just Monday spelled with a T