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From: Anders Haglund
Subject: Angle dependent pattern patch
Date: 12 Apr 1999 16:16:31
Message: <3712468f.0@news.povray.org>
Hi everybody!

I played around a bit with the povray source today and came up with an angle
dependent pattern, ie a pattern that changes color depending on the angle
between the surface normal and the ray. It's *very* alpha right now but
seems to work ok so far...
So, what do you all out there think about it? Any need for this kind of
pattern?

/Anders


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Attachments:
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Preview of image 'angle.jpg'
angle.jpg


 

From: Bugs74
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:18:57
Message: <37124721.0@news.povray.org>
Looks fine to me... I'm looking forward to the source-code!

Bugs74


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From: Anders Haglund
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:30:45
Message: <371249e5.0@news.povray.org>
Bugs74 skrev i meddelandet <37124721.0@news.povray.org>...
>Looks fine to me... I'm looking forward to the source-code!
>
>Bugs74

Yeah, I'll post the changes as soon as I get my hands on a patch utility...
Anyone know where I can find one for dos? I'd like one that's compatible
with the linux patch util...
Btw, It's very smal changes in the source code. The angle calculation is
made for all patterns to check for negative normals so no extra calculations
is needed... neat...
Oh, and can anyone come up with a good name for this pattern?

/Anders


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From: Ken Cecka
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:32:45
Message: <37123998.7CD04E18@u.washington.edu>
Ewww, wierd!  But cool.  Kind of has an infrared effect

Anders Haglund wrote:

> Hi everybody!
>
> I played around a bit with the povray source today and came up with an angle
> dependent pattern, ie a pattern that changes color depending on the angle
> between the surface normal and the ray. It's *very* alpha right now but
> seems to work ok so far...
> So, what do you all out there think about it? Any need for this kind of
> pattern?
>
> /Anders
>
>  [Image]


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From: Ken
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:43:13
Message: <37124A31.1DB7AFC0@pacbell.net>
Anders Haglund wrote:

> Oh, and can anyone come up with a good name for this pattern?
> 
> /Anders

Anti_Normal ?

-- 
Ken Tyler

mailto://tylereng@pacbell.net


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From: Alex Vandiver
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:51:57
Message: <37124ED3.D6FFBBED@tiac.net>
Ken wrote:

> Anti_Normal ?

Wouldn't that be Ab_Normal?
-Alex V.


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From: Ken
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 16:58:05
Message: <37124DAD.32D141AF@pacbell.net>
Alex Vandiver wrote:
> 
> Ken wrote:
> 
> > Anti_Normal ?
> 
> Wouldn't that be Ab_Normal?
> -Alex V.

Only if you work out a lot and have really nice abs.
-- 
Ken Tyler

mailto://tylereng@pacbell.net


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From: Fabien Mosen
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 17:12:00
Message: <3712539B.6A05FA4F@compuserve.com>
Chris Young once told me that they planned to include a generalised
"angle-of-incidence" feature, that will allow for variable reflection
or silk aspect.  Your patch seems to give that nice "silk" aspect, so
maybe you could call that "silk", huh ?...

Cheers,
Fabien.


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From: Eran Lewis
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 17:12:47
Message: <371253BE.B0789E4B@hotmail.com>
> Oh, and can anyone come up with a good name for this pattern?

Angle_Tex?


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From: Richard Speir
Subject: Re: Angle dependent pattern patch
Date: 12 Apr 1999 17:55:00
Message: <34AB7474.63365492@geocities.com>
Wow. That's pretty cool. That'll make for some interesting animations.


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