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Carlocki
05-14-2002, 08:59 PM
Damn!!! no way to obtain caustic with three glass balls on a black board!!
so these are the glass settings:
Glass Surface:
Color = 200 200 200
Luminosity = 0%
Diffuse = 10%
Specularity = 80%
Medium Glossiness
Reflectivity = 20%
Reflection Image = NONE
Transparency = 90%
Refractive Index = 1.52
Normal Edge Transparency
Smoothing ON
Double Sided OFF
:)
but no way to obtain the "shadows" caustics on the borad
how can i do i enable everything? also Caustic affect on the lgiht i'm using (an area light)
Is radiosity usful in that case? (i'm using rdaiosity too anyway!!)
Please help i want my three balls shining for caustis reflections
Mike RB
05-14-2002, 09:45 PM
did you turn on caustics?
Carlocki
05-14-2002, 10:00 PM
:annoyed: sure
Cman
05-14-2002, 10:42 PM
Well, using your settings I had this result:

This is with the flat set to RBG, (15,15,15):

http://www.m2estudios.com/Temp/RGB15.jpg


This is with the flat set to RBG (0,0,0):
http://www.m2estudios.com/Temp/RGB0.jpg


I changed nothing else.
So indeed, with a "black" flat, the caustics disappear!!!
Anyone know why???
Carlocki
05-15-2002, 12:16 AM
http://digilander.iol.it/carlocki/Archivio%20Carlo/caus4.jpg

hmmm where my bloody caustics????!!?:scream:
Facial Deluxe
05-15-2002, 01:01 AM
Is the result proportionnal to the gray level, or does it turn caustic off only with 0.0.0 ? If so, I'll suggest using 1.1.1 value...

Sorry nothing clever....
Carlocki
05-15-2002, 01:12 AM
hmm could someone try to render this two scene (about 2 min) someone says that my system couldn't work well with lw and it doesn't make caustics.....


file (http://digilander.iol.it/carlocki/Archivio%20Carlo/scenes.zip)
thank u


and then please post the results:thumbsup:
Carlocki
05-15-2002, 04:34 PM
Once upon a Time There was ....
A BLOODY CAUSTICS EFFECT!!!!

so last update

please render the file (http://digilander.iol.it/carlocki/Archivio%20Carlo/rings.zip) on your comp and cheking the settings tell me what you obtain
this is my resulting render
http://digilander.iol.it/carlocki/Archivio%20Carlo/ring4.jpg
Cman
05-15-2002, 04:35 PM
Here's your scene rendered:

http://www.m2estudios.com/Temp/caustic2.000.jpg


Here it is rendered with flat set to RGB:15

http://www.m2estudios.com/Temp/caustic2.151515.jpg

Finally, here's the RGB:15, with a Levels adjustment in Photoshop to set black level of 15 to be zero:

http://www.m2estudios.com/Temp/caustic2.Levels.jpg

And that's the best I can suggest. If you download the last image, you'll see that the flat's black level is now zero with the adjustment - but the caustic effect is still present.
Carlocki
05-15-2002, 04:46 PM
great test man!!!:beer:

so teh concluision is caustics depend on flat color?

maybe someone have to do a tutorial on it...
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