RonensArt Posted March 29, 2009 Share Posted March 29, 2009 Hi Guys, I want to share this is a sand storm simulation test I did. A Dynamic Gas simulation, Export the Velocity data from DOP's into POP's using $Area attribute. Still on progress.... All the Best. HoudiniSandTests.mov Quote Link to comment Share on other sites More sharing options...
rob Posted March 29, 2009 Share Posted March 29, 2009 Hey cool stuff , I think thats definitely the best part about Houdini , being able to take data and move / apply elsewhere r Quote Link to comment Share on other sites More sharing options...
cellchuk Posted March 30, 2009 Share Posted March 30, 2009 nice one Ronen, send more videos please ! Quote Link to comment Share on other sites More sharing options...
jacys Posted April 18, 2009 Share Posted April 18, 2009 check this, is it possible to make it real in houdini? http://www.vimeo.com/4208056 Quote Link to comment Share on other sites More sharing options...
RonensArt Posted April 19, 2009 Author Share Posted April 19, 2009 check this,is it possible to make it real in houdini? http://www.vimeo.com/4208056 Anything is possible. Dose anyone knows what is the best way/shader to get only the Reflection on a surface in the render image Alpha?!? Thanks, Quote Link to comment Share on other sites More sharing options...
stevenong Posted April 20, 2009 Share Posted April 20, 2009 Dose anyone knows what is the best way/shader to get only the Reflection on a surface in the render image Alpha?!? You're trying to get a reflection "matte" right? The way I do it is to set the object to be 100% reflective so no diffuse, spec, nothing and the objects to be reflected as constant white. Finally, in comp, you can copy R, G or B channel as Alpha. Cheers! steven Quote Link to comment Share on other sites More sharing options...
RonensArt Posted April 20, 2009 Author Share Posted April 20, 2009 You're trying to get a reflection "matte" right? The way I do it is to set the object to be 100% reflective so no diffuse, spec, nothing and the objects to be reflected as constant white. Finally, in comp, you can copy R, G or B channel as Alpha. Cheers! steven Yes Steven, I'm trying to get the Reflection matte... I have build a VOP VEX Shader, with the "Reflective" node and Full Alpha also. and with Super Material setting up to 100% Reflection, no spec no diffuse playing with the alpha roll and parms also, I get the Full Alpha of the Object. Why do I need to render a separate pass to get a Reflection Matte Alpha? Cheers Ronen. Quote Link to comment Share on other sites More sharing options...
jacys Posted April 21, 2009 Share Posted April 21, 2009 Yes Steven, I'm trying to get the Reflection matte...I have build a VOP VEX Shader, with the "Reflective" node and Full Alpha also. and with Super Material setting up to 100% Reflection, no spec no diffuse playing with the alpha roll and parms also, I get the Full Alpha of the Object. Why do I need to render a separate pass to get a Reflection Matte Alpha? Cheers Ronen. can you tell us more details? or make a sample tutorial. I expect that. Quote Link to comment Share on other sites More sharing options...
stevenong Posted April 21, 2009 Share Posted April 21, 2009 Yes Steven, I'm trying to get the Reflection matte...I have build a VOP VEX Shader, with the "Reflective" node and Full Alpha also. and with Super Material setting up to 100% Reflection, no spec no diffuse playing with the alpha roll and parms also, I get the Full Alpha of the Object. Why do I need to render a separate pass to get a Reflection Matte Alpha? Perhaps I misunderstood what you want. I thought you want to have a "matte" for the reflections in your object so you can adjust it in comp. You can export the reflections to a deep raster but the problem is... it's reflection of the object and not the "alpha" of the reflected object. Perhaps you can tell the reflected rays to be 1,1,1 and export that as a deep raster. Unfortunately, there isn't a ready-made shader which does that. For me, it's easier to set up a take and render a separate pass instead. Cheers! steven Quote Link to comment Share on other sites More sharing options...
stevenong Posted April 21, 2009 Share Posted April 21, 2009 can you tell us more details?or make a sample tutorial. I expect that. Hi jacys, I've attached a hip file with two Mantra ROPs, one for the main render and the other for the reflection "matte" using Takes. Cheers! steven reflection_matte.zip Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.