POV-Ray : Newsgroups : povray.binaries.images : csg (26+17 kb). Server Time
20 Nov 2024 00:40:56 EST (-0500)
  csg (26+17 kb). (Message 1 to 10 of 15)  
Goto Latest 10 Messages Next 5 Messages >>>
From: Alex Kluchikov
Subject: csg (26+17 kb).
Date: 4 Aug 2003 15:26:58
Message: <1103_1060028768@news.povray.org>
CSG objects. Made of big sphere in center, small spheres around and differences
(cylinder - torus) to smoothly connect them. Yes, it looks like something similar to
splorks 
(http://news.povray.org/povray.binaries.images/30636/), but no blobs were used. (It
seems to me, splorks are made of blobs, am I right?) As usually, if anybody interested
in source, I'll 
post it in p.b.s-f.

 Sincerely Yours, Alex Kluchikov.


Post a reply to this message


Attachments:
Download 'csg.jpg' (27 KB) Download 'csg1.jpg' (18 KB)

Preview of image 'csg.jpg'
csg.jpg

Preview of image 'csg1.jpg'
csg1.jpg


 

From: Tek
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 15:34:26
Message: <3f2eb542$1@news.povray.org>
Woah that looks really cool!
What material have you applied to them? it looks sort of like blurred
reflections but I assume it's just a blurry HDR image or something.

Can you animate it? :)

-- 
Tek
http://www.evilsuperbrain.com

"Alex Kluchikov" <klk### [at] ukrnet> wrote in message
news:1103_1060028768@news.povray.org...
> CSG objects. Made of big sphere in center, small spheres around and
differences (cylinder - torus) to smoothly connect them. Yes, it looks like
something similar to splorks
> (http://news.povray.org/povray.binaries.images/30636/), but no blobs were
used. (It seems to me, splorks are made of blobs, am I right?) As usually, if
anybody interested in source, I'll
> post it in p.b.s-f.
>
>  Sincerely Yours, Alex Kluchikov.
>


Post a reply to this message

From: ingo
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 15:40:32
Message: <Xns93CDDC7EA663Bseed7@povray.org>
in news:1103_1060028768@news.povray.org Alex Kluchikov wrote:

> small spheres around and differences (cylinder - torus) to smoothly
> connect them. 

did you use/try the "r_ConnectSpheres" macro from 
pov.../scenes/advanced/cats/coolcat.inc ? If not, you seem to have the 
same "problem" that I had. The transition from sphere to the difference
{cylinder/torus} object is not 100% smooth. Is it possible at all with 
pure CSG?

Anyway, I like the objects, they seem to beg for a checkerd plane ;)

Ingo


Post a reply to this message

From: George Pantazopoulos
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 16:06:11
Message: <oprtedf8hnhr234r@news.povray.org>
Alex,
	Another fine picture, you are talented :) I totally love the texture.. 
looks very much like silver. How did you make it?

George


On Mon, 04 Aug 2003 20:26:08 GMT, Alex Kluchikov <klk### [at] ukrnet> wrote:

> CSG objects. Made of big sphere in center, small spheres around and 
> differences (cylinder - torus) to smoothly connect them. Yes, it looks 
> like something similar to splorks 
> (http://news.povray.org/povray.binaries.images/30636/), but no blobs were 
> used. (It seems to me, splorks are made of blobs, am I right?) As 
> usually, if anybody interested in source, I'll post it in p.b.s-f.
>
> Sincerely Yours, Alex Kluchikov.
>



-- 
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/


Post a reply to this message

From: Alex Kluchikov
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 16:20:02
Message: <web.3f2ebed41fab002d1932a0d0@news.povray.org>
Tek wrote:

>What material have you applied to them? it looks sort of like blurred
>reflections but I assume it's just a blurry HDR image or something.
>
>Can you animate it? :)

 I used big hollow shadowless sphere, about 1000's of POV units large, with
a little colorfull bozo pigment on it - it creates a blurry reflection
illusion, very applicable to smooth metallic surface.
 I did not tried to animate this object this is why: I generate some random
values for every small sphere. Not all of them are suitable, so, I need to
throw out some. If animated it would create effect of sudden appearing and
disappearing - so, I decided to put off animation problem untill I have
some ideas.

Sincerely Yours, Alex Kluchikov.


Post a reply to this message

From: Alex Kluchikov
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 16:40:02
Message: <web.3f2ec3ed1fab002d1932a0d0@news.povray.org>
ingo wrote:

>did you use/try the "r_ConnectSpheres" macro from
>pov.../scenes/advanced/cats/coolcat.inc ? If not, you seem to have the
>same "problem" that I had. The transition from sphere to the difference
>{cylinder/torus} object is not 100% smooth. Is it possible at all with
>pure CSG?
>
>Anyway, I like the objects, they seem to beg for a checkerd plane ;)

No, I did not use macro from /scenes/advanced/cats/coolcat.inc.
It is pure csg, and we can not get 100% smothness with csg like this - we
have at join line continuous surface, continuous normal vector but
discontinuous derivative of normal - so, we receive smooth surface if no
reflection, but unsmooth if there is reflection. I think, with csg we can
not solve this problem.
 And if you really like checkered plane, I can post one (even imagine:
Subject: checkered plane. Attached picture - checkered plane ;) It was
joke...

 Sincerely Yours, Alex Kluchikov.


Post a reply to this message

From: Alex Kluchikov
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 16:50:02
Message: <web.3f2ec5c51fab002d1932a0d0@news.povray.org>
George Pantazopoulos wrote:

>looks very much like silver. How did you make it?

 I used something like envionment map - a textured hollow sphere, big enough
to contain all the scene, with no_shadow and no_image attributes set. I
already answered on similar question asked by Tek - see. May be, it would
be better to post sources?

 Sincerely Yours, Alex Kluchikov.


Post a reply to this message

From: Tek
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 16:54:28
Message: <3f2ec804$1@news.povray.org>
Could you post the source for that bozo pigment? it looks really good.

-- 
Tek
http://www.evilsuperbrain.com

"Alex Kluchikov" <klk### [at] ukrnet> wrote in message
news:web.3f2ebed41fab002d1932a0d0@news.povray.org...
> Tek wrote:
>
> >What material have you applied to them? it looks sort of like blurred
> >reflections but I assume it's just a blurry HDR image or something.
> >
> >Can you animate it? :)
>
>  I used big hollow shadowless sphere, about 1000's of POV units large, with
> a little colorfull bozo pigment on it - it creates a blurry reflection
> illusion, very applicable to smooth metallic surface.
>  I did not tried to animate this object this is why: I generate some random
> values for every small sphere. Not all of them are suitable, so, I need to
> throw out some. If animated it would create effect of sudden appearing and
> disappearing - so, I decided to put off animation problem untill I have
> some ideas.
>
> Sincerely Yours, Alex Kluchikov.
>


Post a reply to this message

From: Alex Kluchikov
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 17:05:01
Message: <web.3f2eca131fab002d1932a0d0@news.povray.org>
Tek wrote:
>Could you post the source for that bozo pigment? it looks really good.

OK. Look in p.b.s.-f. in a few minutes.

Sincerely Yours, Alex Kluchikov.


Post a reply to this message

From: Sir Charles W  Shults III
Subject: Re: csg (26+17 kb).
Date: 4 Aug 2003 17:35:38
Message: <3f2ed1aa@news.povray.org>
Very nice, Alex.  I used a similar method to make solder-flow in electronic
devices- a torus subtracted from a cylinder.  Check out the attached image.  And
once again, very nice image.


Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip


Post a reply to this message


Attachments:
Download 'Parts3.jpg' (26 KB)

Preview of image 'Parts3.jpg'
Parts3.jpg


 

Goto Latest 10 Messages Next 5 Messages >>>

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.