POV-Ray: Newsgroups: povray.newusers: Defined a pigment; what's the color at <vect>?

POV-Ray : Newsgroups : povray.newusers : Defined a pigment; what's the color at <vect>?		Server Time 31 Oct 2024 10:23:41 EDT (-0400)

From: gregjohn
Subject: Defined a pigment; what's the color at <vect>?
Date: 21 Aug 2008 21:20:01
Message: <web.48ae137054c8e32034d207310@news.povray.org>

I've defined a pigment.  I'm looking for a way to evaluate the pigment at a
specific location.  I thought there may have been a path to do this in 3.6, but
I cannot get the syntax right.  Any tips?

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From: Leroy Whetstone
Subject: Re: Defined a pigment; what's the color at <vect>?
Date: 21 Aug 2008 22:22:33
Message: <48AE3F8C.7000706@joplin.com>

gregjohn wrote:
> I've defined a pigment.  I'm looking for a way to evaluate the pigment at a
> specific location.  I thought there may have been a path to do this in 3.6, but
> I cannot get the syntax right.  Any tips?
> 
> 

#include"functions.inc"
then use: eval_pigment(Pigment, Vect)

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From: Warp
Subject: Re: Defined a pigment; what's the color at <vect>?
Date: 22 Aug 2008 04:01:06
Message: <48ae7242@news.povray.org>

Leroy Whetstone <lrw### [at] joplincom> wrote:
> #include"functions.inc"
> then use: eval_pigment(Pigment, Vect)

  If you are going to evaluate the pigment a lot of times in a loop,
it's must faster if you create a pigment function just once, and then
just call that. Look at the implementation of eval_pigment() to see
how it's done.

-- 
                                                          - Warp

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