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General => Terragen Discussion => Topic started by: John2k6 on February 04, 2007, 04:16:13 PM

Title: sand dunes
Post by: John2k6 on February 04, 2007, 04:16:13 PM
how can i get smooth mountains like in this pic - http://www.planetside.co.uk/gallery/v/tg2gallery/saurav_subedi_Dunes.jpg.html
Title: Re: sand dunes
Post by: Saurav on February 04, 2007, 11:59:05 PM
That render was done by me. I used World Machine (dune macro') to create the basic terrain shape and added the wind ripples via a mixture of an image map shader and TG2 own erosion settings. Hope that helps.
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 07:31:16 AM
thanks :)
Title: Re: sand dunes
Post by: trailgirl on February 05, 2007, 05:36:29 PM
I wonder if it would be possible to make sand dunes by placing a Lake with some large waves, no reflections, with a shader that would give it a sandy color. After all, dunes are created by winds and waves in lakes are created by winds -- just a thought!
Title: Re: sand dunes
Post by: BPauba on February 05, 2007, 06:16:41 PM
Quote from: trailgirl on February 05, 2007, 05:36:29 PM
I wonder if it would be possible to make sand dunes by placing a Lake with some large waves, no reflections, with a shader that would give it a sandy color. After all, dunes are created by winds and waves in lakes are created by winds -- just a thought!
Try it out :D. I am sure with experimentation it could happen!
Title: Re: sand dunes
Post by: Will on February 05, 2007, 06:18:12 PM
neat idea, try it and tell us if it works.

Regards,

Will
Title: Re: sand dunes
Post by: Sengin on February 05, 2007, 07:12:00 PM
Quote from: trailgirl on February 05, 2007, 05:36:29 PM
I wonder if it would be possible to make sand dunes by placing a Lake with some large waves, no reflections, with a shader that would give it a sandy color. After all, dunes are created by winds and waves in lakes are created by winds -- just a thought!

I was wondering about a way to create dunes, and I came up with this: why have a power fractal generate the terrain?  Can I use a water shade to generate terrain that will have properties of water?  After testing, you can, in fact, use a water shader to generate terrain.  It's pretty sweet.  Here's an early, early render of just the sand dunes I am working on, along with a picture of the nodes.
Title: Re: sand dunes
Post by: Will on February 05, 2007, 07:15:54 PM
those came out well, glad it works :)

Regards,

Will
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 07:37:10 PM
how do you export a terrain from world machine into terragen2?
Title: Re: sand dunes
Post by: Will on February 05, 2007, 07:38:52 PM
just use the old terragen format

regards,
Will
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 07:42:25 PM
it only lets me save it as - tmd :(
Title: Re: sand dunes
Post by: Will on February 05, 2007, 07:44:08 PM
are you going from world mechine to TGTP or the other way around?

Regards,
Will
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 07:48:29 PM
world machine to tg2.
Title: Re: sand dunes
Post by: Will on February 05, 2007, 07:51:46 PM
save it as terragen file and then you can import it in TGTP I think into a heightfield but im not totaly sure all go check.

EDIT: yea it goes into the HEIGHTFEILD LOAD. or at least thats what worked for me, try it and tell me if it worked.


Regards,

Will
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 07:52:29 PM
they won't let me save it as a terragen file :) only as a .tmd :)
Title: Re: sand dunes
Post by: Will on February 05, 2007, 08:05:04 PM
woops edited instead, look above for my awnser.

Sorry,

Will
Title: Re: sand dunes
Post by: John2k6 on February 05, 2007, 08:16:12 PM
nno, only allows tgd files. i have the technology preview, free version btw.
Title: Re: sand dunes
Post by: Will on February 05, 2007, 08:18:50 PM
eplain what you are doing. What Im saying is right-click choose heightfield operator then go up to the top and choose heightfield load then go into that and choose the exported .ter file.

Regards,

Will
Title: Re: sand dunes
Post by: SeerBlue on February 06, 2007, 01:50:38 PM
john, to export a ter from world machine double click on your height output device in the workspace, the red rectangle, that should bring up heightfield file output options. Select terragen ter, set your save location, and then click write output to disk( Very important or file won't be written). The file save in the main menu is for saving WM projects in tmd format for use in WM. SeerBlue
Title: Re: sand dunes
Post by: buchvecny on February 06, 2007, 04:09:47 PM
thats not possible .... there must be option i think 16bit=> .ter
Title: Re: sand dunes
Post by: dhavalmistry on February 06, 2007, 06:52:15 PM
here you go...not perfect dunes but preety close....
Title: Re: sand dunes
Post by: Tangled-Universe on February 07, 2007, 05:12:07 AM
Quote from: dhavalmistry on February 06, 2007, 06:52:15 PM
here you go...not perfect dunes but preety close....

Great dune formations.
Rich2 posted a very useful file in the shared files section of this forum over here:

http://forums.planetside.co.uk/index.php?topic=685.msg5898#msg5898

This wil explain how to create ripples WITHIN TG2, thus without World-Machine.
I think adding them to this terrain would result in great realism!

Good luck!

Martin
Title: Re: sand dunes
Post by: king_tiger_666 on February 07, 2007, 05:17:19 AM
dhavalmistry

good effort.,, all it needs is for the dune slope to not bee so steep and it would doo nicely as dune + some fake stone shaders for sand texture....

Title: Re: sand dunes
Post by: David Burnett on February 07, 2007, 10:46:54 AM
I hit on an alternative idea for linear sand dunes which would make nice ripples if toned down.
It can be found here..

http://forums.planetside.co.uk/index.php?topic=706.0

Ignore that the discussion is about a bug, the problem its actually caused by the power fractal settings used to make the larger landscape features and sand look.

Title: Re: sand dunes
Post by: Oshyan on February 12, 2007, 12:29:58 AM
The Water Shaded just uses a Power Fractal type shader to create the shapes of water and adds reflection and a few water-specific controls (patchiness, etc.). There is little or no value in trying to use a water shader to make terrain since most of the same controls and more are available in a simple Power Fractal. It's just a matter of finding the right settings. Try Ridged Multi-Perlin and a low number of octaves for example...

- Oshyan
Title: Re: sand dunes
Post by: nvseal on February 12, 2007, 06:40:41 PM
Here are some quick power fractal dunes.
Title: Re: sand dunes
Post by: Will on February 12, 2007, 06:42:53 PM
nice, may I suggest putting a fake stone shader with very very smalls stone to make it have a sandy texture.

regards,

Will
Title: Re: sand dunes
Post by: nvseal on February 12, 2007, 07:49:37 PM
I've added some very small fake rocks here. The difference is relatively subtle (although the color is brighter). It probably needs a little more tweaking but here it is none the less.  :D
Title: Re: sand dunes
Post by: Will on February 12, 2007, 07:50:50 PM
I think it looks nice, they do seem to make it brighter ut now by much though.

Regards,
Will
Title: Re: sand dunes
Post by: king_tiger_666 on February 12, 2007, 08:08:52 PM
if you click on heightfield shader you can save as .ter  what you are trying to do is save a node clip file which is the .tmd

Title: Re: sand dunes
Post by: §ardine on February 12, 2007, 11:33:07 PM
Excellent work nvseal!
This is one of those ideas I've been wanting to try but haven't had the time.
You got it perfectly imo.

-§ardine