hey everyone, i was hoping someone can help me make a realistic diamond in bryce 5 a link to a texture or something thanx something like this..........or similar http://www.renderosity.com/viewed.ez?galleryid=741251&Start=1&Sectionid=0&filter_genre_id=0&Form.Search=diamond&Form.Criteria=ALL&Form.sess_id=17859341&Form.sess_key=1093628117

Attached Link: http://www.3dlapidary.com/HTML/Collections.htm

DO not smooth meshes for diamonds :)

Good luck, and welcome to the forum BTW !!!!!! :)

Well you need to take a few things into account.. I did a study on diamonds way back in the forum somewhere.. but anyway, here's the deal. Things you need: 1) TIR aka total internal refraction. This occurs when the incident light beam refracts at an angle greater than the internal surface of the transparent material. Diamond cutters use this to throw light out of the top of a diamond. All light entering a diamond refracts off of the low angle back walls too great to exit thus reflects twice more on the internal surface and exits the crown of the diamond. This is why they sparkle. You can turn TIR on in the render control pannel. Use a relatively high value for more sparkle. 2) A transparent material with 1.55 refraction index. A diamonds refraction index is pretty much the highest of any transparent gemstone. This is why it's so popular. The high refraction index allows for a greater TIR and 'sparkle'. because the light refracts more upon entering and exiting. 3) the design of the diamond is very important, look at diagrams of diamonds, you will realize how they play with light is very important to how they 'look'. 4) To get the caustics on the ground you need to play with lights a lot.. Put omnis on the surface of the ground with high falloff low intensity and no shadow casting. You will have to manually arrange these to get the right look of the caustics, but it is very doable. hope this helps.

actually.. on second thought diamonds might have a refraction index closer to 2.5 I forget.. anyway, probably want to look that up =). Edit: yeah 2.417, no idea why I said 1.55.. that's quartz.. bleh.

Message edited on: 08/27/2004 14:40

That would be 2.491 exactly ( for diamond ) ! :)

Oops, cross posted it, sorry Ornly, got this one from google ! :) Hmmm, you got 2.417, why they differ ?!?

This guy has made some great gems,have a look at akeru's work. http://www.renderosity.com/homepage.ez?Who=akeru He likes cats so he must be a decent chap,he might be of some help.

Also to get realistic diamonds they need something to reflect. Make sure you use an environment map around the scene.

Jesus Christ I didnt expect this much help, this is exactly what I need thanx

i got 2.417 as well Kemal...but theres not really any difference in those numbers