POV-Ray : Newsgroups : povray.binaries.images : electron microscope-like effect (152 k) Server Time
8 Aug 2024 12:22:46 EDT (-0400)
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From: helge h
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 12:00:00
Message: <web.42ef9755badb99648072d1170@news.povray.org>
Hey, this caused quite a lot of response, thanks for the interest.


> You need MegaPov for the aoi-pattern though.

MegaPov requires Windows, I believe; I'm on a Mac. But it would be nice to
see an example.


> Creative usage of shadowless lights. Makes me think of nanobots.
>
> I went looking for intersecting parts in there, because I knew if you didn't
> use collision avoidance that I'd see a lot of that, and was about to think
> there weren't any such places; then happened to notice the center. Just a
> little to the left of exact center. I was looking around the sides and into
> the background first.

I saw it, but let's leave them alone; they're probably making more nanobots.
:)

> Anyway, it's a very eye-catching image!

Thanks!

> zorglub:

> A different approach

Very nice! I had a similar idea, but I thought of using a positive light and
then inverting the image afterwards in Photoshop Elements. It didn't work
so well, so I abandoned it. But yours looks great!

H


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From: Dave Matthews
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 12:55:01
Message: <web.42efa455badb99647196f5900@news.povray.org>
"helge_h" <nomail@nomail> wrote:

> MegaPov requires Windows, I believe; I'm on a Mac. But it would be nice to
> see an example.
>


http://users.skynet.be/smellenbergh/

(MacMegaPov -- I use it all the time, since my souped-up G3 has problems
with the official Mac compile of POVRay.  I "souped" it myself; that's most
likely the problem.)

Dave Matthews


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From: Wagner
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 13:10:01
Message: <web.42efa87abadb99647fd377250@news.povray.org>
You can use slope to, and no lights:

camera{location -z*10 look_at 0}

#local TEX = texture{
  pigment{slope{<0,0,-10>} //the vector should be your camera position
    pigment_map{
    [0.25 rgb 1 transmit 0.5]
    [0.75 rgb 0 transmit 0.5]
    }
  }
  normal{agate scale 0.2}
  finish{ambient 1 diffuse 0} //the ambient controls the brightness
}

sphere{0,1 texture{TEX}}

-------------------------------
Wagner


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Attachments:
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tempor.png


 

From: Rangifer
Subject: Re: The Dark Side
Date: 2 Aug 2005 13:34:01
Message: <42efae89$1@news.povray.org>
zorglub wrote:
> A different approach :
> 
> Only one point_light with a negative color at camera position, and an 
> ambient texture.
> 
> camera {
>   location  <0.0, 0, -10.0>
>   direction 1.5*z
>   right     x*image_width/image_height
>   look_at   <0.0, 0.0,  0.0>
> }
> light_source {
>   <0, 0, -15> // same as cam, to eliminate the side/parallax effect
>   color rgb -2 // megative value for dark side, greater than 1 for good 
> contrast ;)
>   shadowless
> }
> // the excellent texture, slightly modified
> #local Surface = texture {
>  pigment { color rgb <0.804, 0.82, 0.85> }
>  normal { agate scale 0.1 }
>  finish { ambient 2 diffuse 1 }  // ambient greater than 1 for good 
> contrast
> }
> 
> ------------------------------------------------------------------------
> 
This is a bit like John Bradshaw SEM texture a few years back.
<3c726ebb@news.povray.org>
<3c7649de@news.povray.org>
<3caee275@news.povray.org>

-r


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From: Wagner
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 13:50:01
Message: <web.42efb222badb99647fd377250@news.povray.org>
Just for fun =)

-------------------------------
Wagner


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From: Oleguer Vilella
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 16:35:46
Message: <42efd922$1@news.povray.org>
Just curiosity, have you got an ebook? I'm planning to buy one on January, 
because I think it will appear the new one the next year.

Regards,
Oleguer




news:web.42efa455badb99647196f5900@news.povray.org...
> "helge_h" <nomail@nomail> wrote:
>
>> MegaPov requires Windows, I believe; I'm on a Mac. But it would be nice 
>> to
>> see an example.
>>
>> > Bob Hughes:
>
> http://users.skynet.be/smellenbergh/
>
> (MacMegaPov -- I use it all the time, since my souped-up G3 has problems
> with the official Mac compile of POVRay.  I "souped" it myself; that's 
> most
> likely the problem.)
>
> Dave Matthews
>


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From: helge h
Subject: Re: electron microscope-like effect (152 k)
Date: 2 Aug 2005 19:50:00
Message: <web.42f0059abadb99648072d1170@news.povray.org>
Thanks for the MacMegaPov link, Dave, maybe I'll look at it.

Wagner and Rangifer: thanks for the tips, slope maps look good, too.

"Oleguer Vilella" <ole### [at] infonegociocom> wrote:
> Just curiosity, have you got an ebook? I'm planning to buy one on January,
> because I think it will appear the new one the next year.

I have a 5 year old G4 Mac, running just fine.

H


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From: zorglub
Subject: Re: electron microscope-like effect (152 k)
Date: 3 Aug 2005 05:25:10
Message: <42f08d76@news.povray.org>

> You can use slope to, and no lights:

Wouaouh ! It's so cool !
It gives the best result, IMHO


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testslope.jpg


 

From: repiv
Subject: Re: electron microscope-like effect
Date: 3 Aug 2005 05:44:33
Message: <42f09201@news.povray.org>
zorglub wrote:
> Wouaouh ! It's so cool !
> It gives the best result, IMHO
You should you far less (if any) bluring, electron-microscopes have a very 
high depth of field.
(See http://en.wikipedia.org/wiki/Image:Misc_pollen.jpg for example)


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From: Oleguer Vilella
Subject: Re: electron microscope-like effect (152 k)
Date: 3 Aug 2005 07:05:02
Message: <42f0a4de$1@news.povray.org>
Ahh, all right.

Congratulations for your image.

Regards,
Oleguer




news:web.42f0059abadb99648072d1170@news.povray.org...
> Thanks for the MacMegaPov link, Dave, maybe I'll look at it.
>
> Wagner and Rangifer: thanks for the tips, slope maps look good, too.
>
> "Oleguer Vilella" <ole### [at] infonegociocom> wrote:
>> Just curiosity, have you got an ebook? I'm planning to buy one on 
>> January,
>> because I think it will appear the new one the next year.
>
> I have a 5 year old G4 Mac, running just fine.
>
> H
>


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