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7 Aug 2024 11:25:09 EDT (-0400)
  joining the greeble-madness :) (Message 11 to 20 of 47)  
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From: Zeger Knaepen
Subject: Re: joining the greeble-madness :)
Date: 15 May 2006 08:54:49
Message: <44687a19@news.povray.org>
> This is the kind of greeble I like very much: not too intrusive, but 
subtly
> guiding the eyes over the surface. Good work Zeger!

thank you! :)

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com


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From: Sven Littkowski
Subject: Re: joining the greeble-madness :)
Date: 15 May 2006 12:34:04
Message: <4468ad7c@news.povray.org>
Be careful, Borg! We otherwise will get support from our captain who will 
come back to us from the near future! With nano viruses which will destroy 
you Borg from within, as soon as you assimilate!

:-)   ;-)   :-D

Sven


"Warp" <war### [at] tagpovrayorg> schrieb im Newsbeitrag 
news:4468580f$1@news.povray.org...
>   You will be assimilated! Resistance is futile!


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From: Sven Littkowski
Subject: Question
Date: 15 May 2006 14:44:43
Message: <4468cc1b$1@news.povray.org>
Hi!

Will it be able to use different textures for vertical and for surface 
areas? That would allow the usage of windows for all side areas of your very 
useful and breathtaking macro! Best would be, one texture for front and 
back, one for left and right, and one for surface (and bottom).

Respect,

Sven


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From: Zeger Knaepen
Subject: Re: Question
Date: 15 May 2006 15:28:22
Message: <4468d656$1@news.povray.org>
"Sven Littkowski" <sve### [at] jamaica-focuscom> wrote in message 
news:4468cc1b$1@news.povray.org...
> Hi!
> 
> Will it be able to use different textures for vertical and for surface 

> areas? That would allow the usage of windows for all side areas of 
your very 
> useful and breathtaking macro! Best would be, one texture for front 
and 
> back, one for left and right, and one for surface (and bottom).

as it is now, the texture has nothing to do with the macro, the macro 
only handles the geometry, so yes, you can define different textures for 
any part :)

btw, has anyone got any idea on how to subdivide a triangle to make the 
"greeble-cells" ? :-/

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com


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From: John VanSickle
Subject: Re: joining the greeble-madness :)
Date: 16 May 2006 00:29:57
Message: <44695545$1@news.povray.org>
Zeger Knaepen wrote:

> I just *had* to try to make my own greeble-macro :)
> 
> here's a first result, rendertime: 3'48" on a Sempron 2400+ with 768MB RAM, 
> running Windows XP SP2
> 
> comments are more than welcome !
> 
> cu!

This one's actually quite good.  A nice metallic texture, instead of 
polished marble.

Regards,
John


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From: John VanSickle
Subject: Re: joining the greeble-madness :)
Date: 16 May 2006 00:44:48
Message: <446958c0$1@news.povray.org>
Jim Charter wrote:

> Zeger Knaepen wrote:
> 
>> I just *had* to try to make my own greeble-macro :)
>>
>> here's a first result, rendertime: 3'48" on a Sempron 2400+ with 768MB 
>> RAM, running Windows XP SP2
>>
>> comments are more than welcome !
>>
>> cu!
>>
> I think it is a bit of a stylistic departure from the usual but the 
> result is attractive, even gorgeous, and useful I think.
> 
> The obvious problem with this and the other attempts at an automated 
> generator is the lack of averarching elements that would span "cells" 
> Simply varying the scale of the cells does not get that effect.

One way is to give cells borders, and require that two cell types cannot 
meet unless their typing along that border matches.  Then you can 
sprinkle some stand-alone cells in with larger pieces, and even 
irregular pieces.  The tricky part is to make sure that the surface can 
be completely tiled in this way.

Or you can have multiple layers of greebling, in which the higher level 
has tubes and stuff that traverse the lower-level tiles.

Regards,
John


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From: John VanSickle
Subject: Re: Question
Date: 16 May 2006 00:47:26
Message: <4469595e$1@news.povray.org>
Zeger Knaepen wrote:

> btw, has anyone got any idea on how to subdivide a triangle to make the
"greeble-cells" ? :-/

Depends on the proportions of the triangle.  An equilateral is best 
subdivided into smaller equilaterals.  A triangle with the golden ratio 
between its sides is best divided with a Penrose tiling.

Regards,
John


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From: Zeger Knaepen
Subject: Re: joining the greeble-madness :)
Date: 16 May 2006 06:25:18
Message: <4469a88e$1@news.povray.org>
> This one's actually quite good.  A nice metallic texture, instead of 
> polished marble.

thanks :)
it's the same texture I use for almost all of my scifi-images actually 
:)

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com


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From: Zeger Knaepen
Subject: Re: Question
Date: 16 May 2006 08:04:50
Message: <4469bfe2@news.povray.org>
"John VanSickle" <evi### [at] hotmailcom> wrote in message 
news:4469595e$1@news.povray.org...
> Zeger Knaepen wrote:
> 
> > btw, has anyone got any idea on how to subdivide a triangle to make 
the "greeble-cells" ? :-/
> 
> Depends on the proportions of the triangle.  An equilateral is best 
> subdivided into smaller equilaterals.  A triangle with the golden 
ratio 
> between its sides is best divided with a Penrose tiling.

I'll have to look that up !
Right now I'm trying a "universal 4-sided polygon greeble-cell 
generator", with 2 points at the same location.  Looks useful imho.

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com


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vierhoekgreeble.jpg


 

From: How Camp
Subject: Re: Question
Date: 16 May 2006 08:43:32
Message: <4469c8f4$1@news.povray.org>
"Zeger Knaepen" <zeg### [at] povplacecom> wrote in message 
news:4469bfe2@news.povray.org...

> Right now I'm trying a "universal 4-sided polygon greeble-cell generator",
> with 2 points at the same location.  Looks useful imho.


Wow, this is really nice.  What more can you share about this technique?

- How


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