Sand dunes? how to create them?

[Visionjv]

hi Pekko

I don't know how you could do that, though if anyone knows, I would also appreciate a response.

However, just a small question, wat do u mean u used a directional light as a "wind source"?

[kyrt]

wht problem is it? animation? or material?

[Visionjv]

I dnt know about Pekko's prb, but I would seriously appreciate help with both - but if thats too much trouble dnt worry about it.

[soulburn3d]

Just wanted to say that's a pretty cool idea to create dune shapes pekko.

- Neil

[pekko]

Just wanted to say that's a pretty cool idea to create dune shapes pekko.

- Neil
Thanks. It would be fun to think of fast and interactive way to do it within same max scene and without going to photoshop.

hi Pekko


I don't know how you could do that, though if anyone knows, I would also appreciate a response.

However, just a small question, wat do u mean u used a directional light as a "wind source"?With wind source i meant that classic dune shape is round with flat "wind side". So first you would create displacement map for a plane with just round dunes. Then you need somekind of method to adjust just the wind side. if you put directional light, for example, without shadows to point your displaced plane. Then only the "wind side" of the dune would be white. If you render this with orthogonal camera from the top, you get map. And then you can render just the basic height map of your plane (in that way your two dune renderings will match) then compine these two and you hace possibility to control just other sides of the dunes.

Cheers

ps. I think that there must be some more elegant way to do this also. Any ideas?

[jmBoekestein]

Real dunes form in wave patterns like water,

A water texture or wood grain texture would solve a lo of your problems, maybe in combination with your direct. light technique it would be perfect.

[soulburn3d]

You could also try out noise that's been scaled heavily in one direction so you get long thin dunes.

Or if you really want to go crazy, you'd want to use something like KPT's reaction plugin, since dune formation could be considered a reaction diffusion problem, and KTP seems like the only widely available commercial tool for doing those sorts of things...

http://www.corel.com/servlet/Satellite?pagename=Corel2/Products/Content&pid=1047022702225&cid=1047022708512

- Neil

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