Author Topic: Fun with the crater shader  (Read 48112 times)

Offline king_tiger_666

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Re: Fun with the crater shader
« Reply #45 on: January 07, 2007, 10:54:10 AM »
is there a way to have a number of craters randomly distributed over a map without adding them individually?.. and can you somehow set a impact angle? Instead of having the crater represent a vertical impact.... thank s
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Offline lonewolf

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Re: Fun with the crater shader
« Reply #46 on: January 07, 2007, 11:41:13 AM »
With a simple twist and shear applied to the crater rim we get a directional crater.

- Iain

Offline oggyb

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Re: Fun with the crater shader
« Reply #47 on: January 07, 2007, 12:14:33 PM »
yeah but that looks extremely weird. . . I suppose it looks more natural with some redirect going on?

M.

Offline 3DGuy

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Re: Fun with the crater shader
« Reply #48 on: January 07, 2007, 04:15:23 PM »
linewolf: I would use a distrubution shader to move restrict the shearing just below the surface and use less shearing. That would make it more natural.

Offline Oshyan

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Re: Fun with the crater shader
« Reply #49 on: January 07, 2007, 10:12:55 PM »
You can't currently do a "population" of craters, but we hope to provide that kind of ability in the future.

- Oshyan

Offline MeltingIce

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Re: Fun with the crater shader
« Reply #50 on: January 07, 2007, 10:20:18 PM »
You can't currently do a "population" of craters, but we hope to provide that kind of ability in the future.

- Oshyan
Yea I tried that and didn't work  :-[
I have found though that you can create tidal waves using the crater shader combined with some other shaders  ;)

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Offline efflux

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Re: Fun with the crater shader
« Reply #51 on: January 07, 2007, 10:42:54 PM »
Populations of craters would be great. Some cool ideas in this thread.

Offline king_tiger_666

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Re: Fun with the crater shader
« Reply #52 on: January 07, 2007, 11:11:34 PM »
meltingice, i was just rendering something like that lol, how did you know, though it is very simple so far

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Offline MeltingIce

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Re: Fun with the crater shader
« Reply #53 on: January 07, 2007, 11:33:22 PM »
meltingice, i was just rendering something like that lol, how did you know, though it is very simple so far


Cause I'm psychic, duh  ;)  The render I was trying was of a shoreline with a massive wave coming in.  Initially it didn't turn out very good but I didn't spend very much time on it.  It's something I plan to come back to soon.

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Offline xanga433

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Re: Fun with the crater shader
« Reply #54 on: January 08, 2007, 04:08:04 AM »
The tidal wave idea is really good! Thank you, I've been meaning to make something like that. In King Tigers picture, I can imagine a mushroom cloud sort of formation above the center of the crater...make a nice scene akin to the movie "Deep Impact."

-Iain #2


Offline king_tiger_666

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Re: Fun with the crater shader
« Reply #55 on: January 08, 2007, 04:59:46 AM »
that will be my next attempt using this kind of render adding a cloud plume if possible

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Offline 3DGuy

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Re: Fun with the crater shader
« Reply #56 on: January 08, 2007, 07:15:01 PM »
Since you can't do crater populations in T2 yet, I've created a simple script to generate a number of random craters.

Check it out here:
http://www.theglasseye.nl/terragen/

It will create a clipfile you can import into TG2. Just connect the last crater shader to the compute terrain node :)
If there's more options needed, post it here and I'll see if I can add that.

Offline John2k6

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Re: Fun with the crater shader
« Reply #57 on: January 08, 2007, 07:39:56 PM »
how do you invert the crater?

Offline 3DGuy

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Re: Fun with the crater shader
« Reply #58 on: January 08, 2007, 07:42:28 PM »
In Terragen, use a negative depth.

In the script just enter negative values for the Min/Max depth percentage entries. There 100 means depth=radius.

Offline John2k6

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Re: Fun with the crater shader
« Reply #59 on: January 08, 2007, 07:44:17 PM »
i see :) thanks ;)