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volumetric lights D3 / Prey   Message List  
Reply | Forward Message #17298 of 17302 |
Re: [quark] Re: volumetric lights D3 / Prey

Thanx!
Bt thats a bit hard to understand for me, I thought that are something like
coordinates.
regards Dirk
-------- Original-Nachricht --------
> Datum: Thu, 08 Jan 2009 15:52:15 -0000
> Von: "danielpharos" <danielpharos@...>
> An: quark@yahoogroups.com
> Betreff: [quark] Re: volumetric lights D3 / Prey

> Ah, but that's easy:
> There are nine numbers, written as floating point values. The "e-007"-
> part means "ten to the power of minus seven" --> almost zero. Groups
> these numbers in a three-by-three matrix (left-to-right, top-to-
> bottom):
>
> ((0 -1 0)
> (-1 0 0)
> (0 0 -1))
>
> This looks exactly like a three dimensional rotation matrix. So
> you're going to have to make a new rotation matrix to rotate the
> light. Here's the wikipedia-article about it:
> http://en.wikipedia.org/wiki/Rotation_matrix
>
> I'm not sure what your math-background is, so I don't know how much I
> need to explain, but I hope this at least gets you going. :)
>
>
> Greetz,
> DanielPharos
>
>
> --- In quark@yahoogroups.com, "Dirk Schibelius" <Dschibelius@...>
> wrote:
> >
> > Hi!
> > Thanx for that tip, bt I know that already. I found out now, by
> trying to use the built in editor (thats very hard to use for me)
> that they use a "func_emitter" entity for that. I converted the .prt
> file for it to Doom 3 and the ncessary files too and it works fine.
> But I have now problems to find out what the args for the
> key "rotation" mean.
> > example: "rotation" "-3.60869e-007 -1 0 -1 3.60869e-007 -7.37164e-
> 007 7.37164e-007 -2.6602e-013 -1"



Thu Jan 8, 2009 5:37 pm

dirk_schibelius
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Message #17298 of 17302 |
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Hi! Can someone tell me how I can create volumetric (foggy) lightbeams like some lamps in Prey's spindle maps have? I looked for hours in da internet but didnt...
Dirk Schibelius
dirk_schibelius
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Dec 26, 2008
10:50 pm

Hi Dirk, One way I have seen people do it (in Star Trek Voyager: Elite Force, a Quake 3-engine game) is just create a normal spotlight, and use see- through...
danielpharos
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Dec 27, 2008
12:43 pm

Hi! Thanx for that tip, bt I know that already. I found out now, by trying to use the built in editor (thats very hard to use for me) that they use a...
Dirk Schibelius
dirk_schibelius
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Dec 28, 2008
7:05 pm

Ah, but that's easy: There are nine numbers, written as floating point values. The "e-007"- part means "ten to the power of minus seven" --> almost zero....
danielpharos
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Jan 8, 2009
3:52 pm

Thanx! Bt thats a bit hard to understand for me, I thought that are something like coordinates. regards Dirk...
Dirk Schibelius
dirk_schibelius
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Jan 8, 2009
5:37 pm

Yeah, things get very mathy fast. There's no escaping it! :) If you need more help with this, it's better to open a topic on the main forum about it:...
danielpharos
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Jan 14, 2009
7:04 pm
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