mike_sul Posted September 8, 2003 Share Posted September 8, 2003 slightly off topic .. i have to create an animation of rolling diamonds .. with all the refraction in its full glory and shine and highlit .. if anybody knows of a really solid techniqe of achieving real life diamond refraction effects kindly help .. please .. its very urgent .. Link to comment Share on other sites More sharing options...
Craig Ramsay Posted September 8, 2003 Share Posted September 8, 2003 It all depends on what software you are using etc... best place to ask would be www.cgtalk.com Good luck! Craig Link to comment Share on other sites More sharing options...
Jennifer Posted September 8, 2003 Share Posted September 8, 2003 Hi, The caustics are the sticky point. Mental ray has some very nice caustics, as does Brazil and VRay, and each would raytrace the reflections and refractions very nicely. Set the Index of Refraction to 2.42. The PURE card would certainly render the raytracing much, much faster, especially with little lens flares and motion blur applied. But, I'm still playing with the caustics on that one. If the diamonds are moving fast, you can probably fake the caustics with a noise or cellular map. I haven't seen examples of any renderer producing a LOT of caustics. Most underwater caustic scenes are faked. If you are using max, then use the Reactor dynamics system to animate the rolling diamonds, or shoot them from a particle system using instanced geometry. Use gravity and deflectors to get them moving in the right direction. How many diamonds is this? Be prepared to have some huge render times! Have fun! Jenni http://render.4dArtists.com [ September 08, 2003, 03:20 PM: Message edited by: Jennifer ] Link to comment Share on other sites More sharing options...
3d-doctor Posted September 10, 2003 Share Posted September 10, 2003 you could fake the caustics with omni lights mapped with caustic (animated?) and a very short attentuation following the flow of gems but i suspect the best bang will be some sparkle added via lensfx or some other form of post....... make sure you have lightsources (3d or faked) visible in order to pick up specular reflection Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now