I could not resist combining two of Alex Kluchikov's neat isosurfaces.

These were rendered with a 3 pass technique:

1) generating photons with a light source
2) radiosity without light source and plain finishes
3) final render without light source and with HDRI

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______

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Attachments:
Download 'iso_ring1.jpg' (23 KB) Download 'iso_ring2.jpg' (25 KB)

Preview of image 'iso_ring1.jpg'

Preview of image 'iso_ring2.jpg'

Christoph Hormann wrote:

> 
> I could not resist combining two of Alex Kluchikov's neat isosurfaces.
> 
> These were rendered with a 3 pass technique:
> 
> 1) generating photons with a light source
> 2) radiosity without light source and plain finishes
> 3) final render without light source and with HDRI
> 
> Christoph
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 

Neat! I love them. Nice metal-glass combo. Of course caustics look way 
too sharp for such a diffuse lighting.

--
Jonathan.

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JRG wrote:
> 
> Neat! I love them. Nice metal-glass combo. Of course caustics look way 
> too sharp for such a diffuse lighting.
> 

That's right - although you can get caustics even from diffuse lighting 
in real life these look quite different,  possible solutions would be to 
add a light source in the final render to make it look like more direct 
light or to have much higher quality radiosity settings to get sharper 
shadows from the HDR map.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______

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Very cool!

Jim

"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:tks### [at] tritonimagicode...
>
> I could not resist combining two of Alex Kluchikov's neat isosurfaces.
>
> These were rendered with a 3 pass technique:
>
> 1) generating photons with a light source
> 2) radiosity without light source and plain finishes
> 3) final render without light source and with HDRI
>
> Christoph
>
> -- 
> POV-Ray tutorials, include files, Sim-POV,
> HCR-Edit and more: http://www.tu-bs.de/~y0013390/
> Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______
>


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I like it a lot. Excellent work!

I love the HDRI-look of the second one.

Fernando

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Christoph Hormann wrote:
>
>I could not resist combining two of Alex Kluchikov's neat isosurfaces.
>
>These were rendered with a 3 pass technique:
>
>1) generating photons with a light source
>2) radiosity without light source and plain finishes
>3) final render without light source and with HDRI
>
>Christoph

 Great idea! I could not ever imagine the combination of two isosurfaces
could give so wonderful result. And lighting is amazing too. How did you
combine the images you have got with each render pass? Did you use some
image manipulation software like Photoshop or GIMP?

 Sincerely Yours, Alex Kluchikov

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Alex Kluchikov wrote:
> [...]
> 
>  Great idea! I could not ever imagine the combination of two isosurfaces
> could give so wonderful result. And lighting is amazing too. How did you
> combine the images you have got with each render pass? Did you use some
> image manipulation software like Photoshop or GIMP?

I did not combine images, the render passes are used to generate the 
photons and radiosity data files.  The images are directly from the last 
  pass.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______

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Christoph Hormann wrote:
> JRG wrote:
> 
>>
>> Neat! I love them. Nice metal-glass combo. Of course caustics look way 
>> too sharp for such a diffuse lighting.
>>
> 
> That's right - although you can get caustics even from diffuse lighting 
> in real life these look quite different,  possible solutions would be to 
> add a light source in the final render to make it look like more direct 
> light or to have much higher quality radiosity settings to get sharper 
> shadows from the HDR map.

Either that or simply smoothen the caustics by using a very large area 
light (with the area_light flag in the photons block) in your first pass.

--
Jonathan.

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Beautiful .. my favourite is the golden one.

> 1) generating photons with a light source
> 2) radiosity without light source and plain finishes
> 3) final render without light source and with HDRI

Last time I did a 3-pass rendering, I saved a lot of render-time, but with
an isosurface it must have been slow anyway.. My guess is 6-7 hours with 2
GHz ?  I could be wildly mistaken.

Regards,
Hugo

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Hugo Asm wrote:
> 
> Last time I did a 3-pass rendering, I saved a lot of render-time, but with
> an isosurface it must have been slow anyway.. My guess is 6-7 hours with 2
> GHz ?  I could be wildly mistaken.

I rendered them larger and i don't know the precise time for the final 
trace but the photons took about 20 minutes and the radiosity step 3-4 
hours.  The isosurface function with Tor's improvements is quite fast in 
fact.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 25 Oct. 2003 _____./\/^>_*_<^\/\.______

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