MENOZ Posted January 10, 2009 Share Posted January 10, 2009 Hello! I'm trying to do a very simple thing in houdini. I have particles that pass through a surface and trasfer their color to the surface.. like wet map. I use an attributeTransfer to transfer the color, but as the particle moves away the attribute the color fades away too. how can I store the color to the surface? I attach the HIP file. thank you! transfer_from_particles.hipnc Quote Link to comment Share on other sites More sharing options...
rdg Posted January 10, 2009 Share Posted January 10, 2009 Some approaches are discussed here: http://www.sidefx.com/index.php?option=com...er+color+colour Quote Link to comment Share on other sites More sharing options...
SpencerL Posted January 10, 2009 Share Posted January 10, 2009 (edited) Hello!I'm trying to do a very simple thing in houdini. I have particles that pass through a surface and trasfer their color to the surface.. like wet map. I use an attributeTransfer to transfer the color, but as the particle moves away the attribute the color fades away too. how can I store the color to the surface? I attach the HIP file. thank you! the sop solver in DOPs has an example file doing exactly this Edited January 10, 2009 by SpencerL Quote Link to comment Share on other sites More sharing options...
mangi Posted January 10, 2009 Share Posted January 10, 2009 Hello!I'm trying to do a very simple thing in houdini. I have particles that pass through a surface and trasfer their color to the surface.. like wet map. I use an attributeTransfer to transfer the color, but as the particle moves away the attribute the color fades away too. how can I store the color to the surface? I attach the HIP file. thank you! Hi there, I read your comment, and the first thing that came to my head, was that why don't you just have the particles stick to the contact object where you would like the transfered color so it will not disappear. So here I made a POPnet and just added a collision node to the POP net. You could try to just make this in the premade particel Object that you are using , but I am not familiar with it and prefered just to do it this way. Here you have the modified file I made a preview just for curiousity and here is the result. I did not look to see if you hade made any shading. but you can see that there is an issue there, which I guess this is now another case. I will look into see what is is now. Just for the hell of it. Take care and put it back up if you can see anything. mangic particle_wetmap.hipnc particle_wet_map.mov original.mov Quote Link to comment Share on other sites More sharing options...
dbukovec Posted January 10, 2009 Share Posted January 10, 2009 hi! You can do this if You bring your geometry to chops (the Cd attribute/animated), use the lag chop there, then get all back with Channel Sop. The only bottleneck of doing this is that it can be slow and memory intensive with large meshes. Quote Link to comment Share on other sites More sharing options...
MENOZ Posted January 11, 2009 Author Share Posted January 11, 2009 thank you everybody! the lag chop works, i will look at the sop solver DOP too! Quote Link to comment Share on other sites More sharing options...
mangi Posted January 11, 2009 Share Posted January 11, 2009 thank you everybody!the lag chop works, i will look at the sop solver DOP too! Hi guys, would you mind putting up the hip with the basic chop config thanks Quote Link to comment Share on other sites More sharing options...
petz Posted January 11, 2009 Share Posted January 11, 2009 if you want to stay inside sops you can also use the new feedback sop instead of a sop solver. petz Quote Link to comment Share on other sites More sharing options...
dbukovec Posted January 11, 2009 Share Posted January 11, 2009 (edited) glad i could help, i'm not so into DOPS, if You manage to get results please share it here is the Chop version, where is that feedback sop? Chop_Lag_particles.hipnc Edited January 11, 2009 by dbukovec 1 Quote Link to comment Share on other sites More sharing options...
petz Posted January 11, 2009 Share Posted January 11, 2009 "where is that feedback sop? " the feedback sop is a proto-installable sop. example file is attached. petz transfer_from_particles1.hipnc Quote Link to comment Share on other sites More sharing options...
dbukovec Posted January 12, 2009 Share Posted January 12, 2009 thanks Petz! Quote Link to comment Share on other sites More sharing options...
mangi Posted January 12, 2009 Share Posted January 12, 2009 thank Quote Link to comment Share on other sites More sharing options...
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