Rendering Diamonds

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  02 February 2006
Rendering Diamonds

We've no diamonds but we guess they should look like the attached images
Attached Images
File Type: jpg GipsyRing.jpg (83.2 KB, 90 views)
File Type: jpg Halskette1.jpg (54.3 KB, 83 views)
File Type: jpg Diamond.jpg (17.9 KB, 85 views)
 
  02 February 2006
"I aint got none either" but I think those are beautifull!
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Rick
 
  02 February 2006
Originally Posted by richardjoly: "I aint got none either"


Mocking my capital city are we? hehehe

Very, very nice Igors... I wonder what inspired this shader....
Ian
 
  02 February 2006
my girlfriend has some

Does it work with caustics ?


Reuben
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  02 February 2006
Gentlemen, thx for good words, but these diamonds (unlike CD's) are only a "programmer's trick", real diamonds/jewels has nothing in common with diffraction, their color transitions are caused by other effects. In other words, we must to notify you: these diamonds are artificial

>> Does it work with caustics ? <<

If you ask: "Can they cast a rainbowed shadow?" then the answer is "no", it needs a serious physical model (+ significant time for calculation)

The "trick" is: just create random (but successive) highlights and let RT recursive labyrinth mixes it by using its refraction/reflection rules (RT does this automatically). As a result we see a lot of colors transitions that are well in animation. After all, CG goal is not to follow by physics only
 
  02 February 2006
Thats cool, so internal chromatic aberrations then...

You can fake the external ones (rainbow shadows) so this will come in handy to complete the effect!
Ian
 
  02 February 2006
Hi, Ian

Originally Posted by halfworld: Thats cool, so internal chromatic aberrations then...

You can fake the external ones (rainbow shadows) so this will come in handy to complete the effect!
Ian


Such features would slow down RT/caustics render speed in several times (each wave of light spectrum requires a separate calculation). Plus user has almost zero "degree of freedom" to control these very capricious effects.

Of course, "chromatic aberrations" sounds very cool, but, IMHO, AE is muuch faster and more effective
 
  02 February 2006
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