POV-Ray : Newsgroups : povray.binaries.images : A prism doodle Server Time
1 Nov 2024 14:20:35 EDT (-0400)
  A prism doodle (Message 1 to 10 of 10)  
From: William F Pokorny
Subject: A prism doodle
Date: 16 Feb 2013 10:09:27
Message: <511fa127@news.povray.org>
Playing with povray prism object & its bezier_spline option. Image is 
one prism, 24 spheres roughly at the start and end of each segment of 
the bezier spline in the point list, a plane and 4 lights arranged for 
the shadows created.

Bill P.


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Attachments:
Download 'bezierprism24.jpg' (235 KB)

Preview of image 'bezierprism24.jpg'
bezierprism24.jpg


 

From: Stephen
Subject: Re: A prism doodle
Date: 16 Feb 2013 12:12:46
Message: <511fbe0e@news.povray.org>
On 16/02/2013 3:09 PM, William F Pokorny wrote:
> Playing with povray prism object & its bezier_spline option. Image is
> one prism, 24 spheres roughly at the start and end of each segment of
> the bezier spline in the point list, a plane and 4 lights arranged for
> the shadows created.
>
> Bill P.

I like it.
It looks very Art Nouveau, to me. And your textures are just right.



-- 
Regards
     Stephen


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From: nemesis
Subject: Re: A prism doodle
Date: 17 Feb 2013 09:30:01
Message: <web.5120e8af218b01886d5889f40@news.povray.org>
William F Pokorny <ano### [at] anonymousorg> wrote:
> Playing with povray prism object & its bezier_spline option. Image is
> one prism, 24 spheres roughly at the start and end of each segment of
> the bezier spline in the point list, a plane and 4 lights arranged for
> the shadows created.
>
> Bill P.

beautiful construct


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From: Christian Froeschlin
Subject: Re: A prism doodle
Date: 17 Feb 2013 14:57:48
Message: <5121363c$1@news.povray.org>
William F Pokorny wrote:

> Playing with povray prism object & its bezier_spline option. Image is 
> one prism, 24 spheres roughly at the start and end of each segment of 
> the bezier spline in the point list, a plane and 4 lights arranged for 
> the shadows created.

nice design! I didn't know you could have overlapping parts
in the prism geometry ... are these treated as "outside"?


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From: clipka
Subject: Re: A prism doodle
Date: 17 Feb 2013 15:18:11
Message: <51213b03$1@news.povray.org>
Am 17.02.2013 20:57, schrieb Christian Froeschlin:

> nice design! I didn't know you could have overlapping parts
> in the prism geometry ... are these treated as "outside"?

Yup.

The algorithm behind it is actually pretty simple: To test whether point 
X is inside the prism, a line is drawn "outward"; if that line crosses 
the prism's outline an odd number of times the point is considered 
inside, otherwise it is outside.


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From: Kenneth
Subject: Re: A prism doodle
Date: 18 Feb 2013 01:40:07
Message: <web.5121cbfa218b0188c2d977c20@news.povray.org>
Nice. It looks like a cross between a Buddhist(?) mandala and Art Nouveau. Are
the somewhat darker lines actually shadows? They lend a great deal to the
beautiful graphic nature of the render.


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From: William F Pokorny
Subject: Re: A prism doodle
Date: 22 Feb 2013 17:53:16
Message: <5127f6dc@news.povray.org>
On 02/18/2013 01:36 AM, Kenneth wrote:
>
> Nice. It looks like a cross between a Buddhist(?) mandala and Art Nouveau. Are
> the somewhat darker lines actually shadows? They lend a great deal to the
> beautiful graphic nature of the render.
>
>
Thanks everyone for the comments.

Kenneth, Yes, the somewhat darker lines are shadows. Attached is another 
image of a single prism, 4 lights and a plane where most of the end 
effect comes from shadows. Both in the strictly darker shadows on the 
plane of the same color and in shadows of a different color on the prism 
by setting the ambient color of the prism to a red.

Bill P.


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Attachments:
Download 'kaleidoscope.jpg' (266 KB)

Preview of image 'kaleidoscope.jpg'
kaleidoscope.jpg


 

From: clipka
Subject: Re: A prism doodle
Date: 22 Feb 2013 18:59:04
Message: <51280648$1@news.povray.org>
Am 22.02.2013 23:53, schrieb William F Pokorny:

> Kenneth, Yes, the somewhat darker lines are shadows. Attached is another
> image of a single prism, 4 lights and a plane where most of the end
> effect comes from shadows. Both in the strictly darker shadows on the
> plane of the same color and in shadows of a different color on the prism
> by setting the ambient color of the prism to a red.

Wonderful stuff! I love those colors.


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From: kurtz le pirate
Subject: Re: A prism doodle - attached files (1/1)
Date: 23 Feb 2013 03:20:47
Message: <kurtzlepirate-07C772.09204123022013@news.povray.org>
In article <511fa127@news.povray.org>,
 William F Pokorny <ano### [at] anonymousorg> wrote:

> Playing with povray prism object & its bezier_spline option. Image is 
> one prism, 24 spheres roughly at the start and end of each segment of 
> the bezier spline in the point list, a plane and 4 lights arranged for 
> the shadows created.
> 
> Bill P.
> ---------------------------------------------------------------------
> [Image]


hey, this is fun. I play also with prism and bezier spline


-- 
klp


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Attachments:
Download '023b.jpg' (149 KB) Download '056a.jpg' (81 KB)

Preview of image '023b.jpg'
023b.jpg

Preview of image '056a.jpg'
056a.jpg


 

From: nemesis
Subject: Re: A prism doodle - attached files (1/1)
Date: 24 Feb 2013 23:35:00
Message: <web.512ae92a5f5fa13f2e9904aa0@news.povray.org>
kurtz le pirate <kur### [at] yahoofr> wrote:
> In article <511fa127@news.povray.org>,
>  William F Pokorny <ano### [at] anonymousorg> wrote:
>
> > Playing with povray prism object & its bezier_spline option. Image is
> > one prism, 24 spheres roughly at the start and end of each segment of
> > the bezier spline in the point list, a plane and 4 lights arranged for
> > the shadows created.
> >
> > Bill P.
> > ---------------------------------------------------------------------
> > [Image]
>
>
> hey, this is fun. I play also with prism and bezier spline
>
>
> --
> klp

holy crab, dude.  that looks amazing


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