Refraction Indexes - Polyloop

ruprechtl · 11th February 2006, 13:56

Hiya,

I was playing around with the shader definitions and tried to create a diamond shader and was stopped at the refraction index of the shader that displayed me 2 decimals and swallowed the last digit of the refractive index of 2.417. So I wondered if the last digit is only not displayed but stored internally or if it is cut off.

And since we are at refractive indexes ... does the ray casting model of Carrara assume a vacuum in the scene (1.0) or atmospheric pressure (1.000293) for times rays are not "inside" material definitions?

Sorry for my English ... German here

Ruprecht

cassaba · 28th May 2007, 16:48

i don't know, but i used to diamond basic in carrara with hdri,i see good
sorry i can't help you so much... my english....vietnam here

markbremmer · 29th May 2007, 01:23

Carrara does keep track up to four decimal places (.0000) However, it only shows the first two.

Mark

GKDantas · 29th May 2007, 06:11

Carrara doesnt render volumetric shaders, the only option that can create something like that is the SubsurfaceScatering...english?? Brazilian here!!

11th February 2006, 13:56	#1 (permalink)
ruprechtl Vertex Join Date: Dec 2005 Location: Tyrol / Austria Posts: 6	Refraction Indexes Hiya, I was playing around with the shader definitions and tried to create a diamond shader and was stopped at the refraction index of the shader that displayed me 2 decimals and swallowed the last digit of the refractive index of 2.417. So I wondered if the last digit is only not displayed but stored internally or if it is cut off. And since we are at refractive indexes ... does the ray casting model of Carrara assume a vacuum in the scene (1.0) or atmospheric pressure (1.000293) for times rays are not "inside" material definitions? Sorry for my English ... German here Ruprecht

29th May 2007, 01:23	#3 (permalink)
markbremmer Escaping to 3D worlds... Join Date: Jul 2005 Posts: 176	Carrara does keep track up to four decimal places (.0000) However, it only shows the first two. Mark __________________ Mark Bremmer Beginner, intermediate and advanced Carrara tutorials are here.

29th May 2007, 06:11	#4 (permalink)
GKDantas Cube Join Date: May 2006 Location: Brazil Posts: 69	Carrara doesnt render volumetric shaders, the only option that can create something like that is the SubsurfaceScatering...english?? Brazilian here!! __________________ Carrara rules!!

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28th May 2007, 16:48	#2 (permalink)
cassaba Vertex Join Date: May 2007 Posts: 5	i don't know, but i used to diamond basic in carrara with hdri,i see good sorry i can't help you so much... my english....vietnam here