Tabulated IOR for Indigo v1.0+

General questions about Indigo, the scene format, rendering etc...
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CoolColJ
Posts: 1734
Joined: Mon Jun 25, 2007 1:47 pm

Tabulated IOR for Indigo v1.0+

Post by CoolColJ » Sun Oct 21, 2007 10:59 am

I think it can be done now

So I found this on my HD - some type of NK file for Sapphire
from what I can tell you have IOR on the left column and Absorption on the right - which needs to be scaled up for Indigo by 1000?

And you have the spectrum of 352.2 for the low end and 802.2 for the upper end I think. Not sure what the 4 and 90 is for - spectrum step values maybe?

Code: Select all

4 352.2 802.2 90 
1.799000000000 0.000000365 
1.799000000000 0.000000311 
1.799000000000 0.000000264 
1.793000000000 0.000000254 
1.791000000000 0.000000258 
1.791000000000 0.000000340 
1.791000000000 0.000000330 
1.794000000000 0.000000340 
1.796000000000 0.000000280 
1.799000000000 0.000000199 
1.797000000000 0.000000153 
1.793000000000 0.000000136 
1.788000000000 0.000000130 
1.784000000000 0.000000129 
1.782000000000 0.000000131 
1.783000000000 0.000000136 
1.786000000000 0.000000146 
1.789000000000 0.000000164 
1.791000000000 0.000000192 
1.785000000000 0.000000223 
1.782000000000 0.000000261 
1.780000000000 0.000000236 
1.777000000000 0.000000221 
1.775000000000 0.000000200 
1.773000000000 0.000000197 
1.771000000000 0.000000184 
1.770000000000 0.000000182 
1.768000000000 0.000000187 
1.767000000000 0.000000197 
1.766000000000 0.000000209 
1.765000000000 0.000000223 
1.764000000000 0.000000239 
1.763000000000 0.000000255 
1.762000000000 0.000000271 
1.762000000000 0.000000288 
1.761000000000 0.000000305 
1.761000000000 0.000000321 
1.761000000000 0.000000337 
1.762000000000 0.000000353 
1.762000000000 0.000000367 
1.763000000000 0.000000381 
1.764000000000 0.000000394 
1.765000000000 0.000000405 
1.765000000000 0.000000415 
1.766000000000 0.000000424 
1.766000000000 0.000000432 
1.767000000000 0.000000439 
1.768000000000 0.000000444 
1.768000000000 0.000000449 
1.769000000000 0.000000454 
1.769000000000 0.000000457 
1.769000000000 0.000000461 
1.768000000000 0.000000465 
1.768000000000 0.000000470 
1.768000000000 0.000000474 
1.768000000000 0.000000479 
1.767000000000 0.000000484 
1.767000000000 0.000000491 
1.767000000000 0.000000497 
1.767000000000 0.000000505 
1.767000000000 0.000000513 
1.767000000000 0.000000522 
1.767000000000 0.000000531 
1.766000000000 0.000000542 
1.766000000000 0.000000553 
1.766000000000 0.000000565 
1.766000000000 0.000000578 
1.765000000000 0.000000591 
1.765000000000 0.000000606 
1.765000000000 0.000000620 
1.764000000000 0.000000637 
1.763000000000 0.000000653 
1.763000000000 0.000000671 
1.762000000000 0.000000691 
1.762000000000 0.000000710 
1.761000000000 0.000000731 
1.761000000000 0.000000753 
1.760000000000 0.000000774 
1.760000000000 0.000000799 
1.760000000000 0.000000823 
1.759000000000 0.000000848 
1.759000000000 0.000000876 
1.758000000000 0.000000902 
1.758000000000 0.000000929 
1.757000000000 0.000000959 
1.757000000000 0.000000988 
1.756000000000 0.000001014 
1.756000000000 0.000001045 
1.755000000000 0.000001075 
1.755000000000 0.000001101 
1.754000000000 0.000001131 

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