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Refractive Index problem About Truespace Archives These pages are a copy of the official truespace forums prior to their removal somewhere around 2011. They are retained here for archive purposes only. Refractive Index problem // Tech Forum 1  |   Order by default Post by Khai // Aug 24, 2008, 5:06am Khai Total Posts: 56 how does one set the index for Gold? according to all the info I've found, it's refractive index is .47.... but the shaders in tS 4.3, 5 and 7.6 won't allow you to set it below 1...... Post by Emma // Aug 24, 2008, 5:08am Emma Total Posts: 344 won't allow you to set it below if you tryd to change it with the sliders, try typing in the value manually Post by Khai // Aug 24, 2008, 5:10am Khai Total Posts: 56 if you tryd to change it with the sliders, try typing in the value manually first thing I tried lol reset's back to 1 soon as you hit enter or click away from it... Post by jamesmc // Aug 24, 2008, 5:43am jamesmc Total Posts: 2566 There's a better shader for gold than 'golden.' I think it's a shaders lab one. Should be a link to it somewhere and it has rgb settings and something else, forgot. It's under Metals3 for materials. Post by parva // Aug 24, 2008, 5:53am parva Total Posts: 822 why do you need it for a metal? Or do you want to create a transparent metal? The refraction index is just important if you want to create transparent materials. Post by Khai // Aug 24, 2008, 6:00am Khai Total Posts: 56 why do you need it for a metal? Or do you want to create a transparent metal? The refraction index is just important if you want to create transparent materials. for accuracy actually... you see, the refraction in this case has nothing to do with transparency. all metals etc have a refractive index transparent or not... - Metals Aluminum 1.39 Copper 2.43 Gold 0.47 Mylar 1.65 Nickel 1.08 Platinum 2.33 Silver 1.35 Titanium 2.16 (as listed here - http://www.robinwood.com/Catalog/Technical/Gen3DTuts/Gen3DPages/RefractionIndexList.html ) thing is, I've got the one you mention James.. the gold looks more like Brass... Post by parva // Aug 24, 2008, 6:30am parva Total Posts: 822 yes I know the values but anyway it doesn't much especially with the pure truespace materials. Maybe you run some tests and see a different between activated and deactivated ior. The ior is just a value how the light scatters "in" the material. So for liquids or things like gems the ior is usable but metal?! mmh, don't know. Post by TomG // Aug 25, 2008, 1:43am TomG Total Posts: 3397 Refractive Indices in tS are used to bend light when it passes through an object. This would make no difference with a solid metal, so I wouldn't worry about setting the value - it will only change Transparency, and won't change regular reflections. HTH! Tom

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