haggi Posted December 7, 2009 Share Posted December 7, 2009 Hi, I'm just trying to understand the fluids with the cmivfx fluids for td's video. There is a part where a SDF object is used as a continous source of liquid, same as "source from object" in the shelf. They create an object use an isooffset to create the SDF and use it in the dop netowork. Until here it works fine. But then the same SDF object is used in a static object and it is connected to the fluid object with a merge node. Switching the merge node to a "source relationship" should make the SDF object a continouse source of liquid. If I do the same steps, my liquid always collides with the static object instead using it as a source. I've seen that in houdini 10 an additional source relationship node is used if I create the system with the shelf button. Did this behaviour change in houdini 10, or am I missing something? Of course I can use the shelf button, but I'd prefer to understand the procedure. Thanks for any help. Quote Link to comment Share on other sites More sharing options...
Emanuele Berti Posted December 8, 2009 Share Posted December 8, 2009 Hi, I tried a quick scene with a static object as a source and a fluid object that takes the initial state from an isooffset SOP. Everything works fine, I'm using Houdini 10.0.465 If you want to see the setup, this is the scene. Cheers, Emanuele test_SDF_as_source.hipnc Quote Link to comment Share on other sites More sharing options...
haggi Posted December 8, 2009 Author Share Posted December 8, 2009 Thanks a lot! I could find out what the problem is. I connected the static objec and the fluid object into a merge node and the output of the merge node into the fluid solver. This way the procedure doesnt work. It seems that I have to connect the fluid object to the solver first and merge the output of the fluid solver with the static object. In the cmivfx video, the merge node is inserted before the fluid solver and this procedure seems not to work properly. Quote Link to comment Share on other sites More sharing options...
Emanuele Berti Posted December 9, 2009 Share Posted December 9, 2009 If you need to insert a merge before the solver you have to specify which object has to be calculated in the Group parameter in the Solver DOP instead using the default " * " Emanuele Quote Link to comment Share on other sites More sharing options...
haggi Posted December 13, 2009 Author Share Posted December 13, 2009 (edited) sorry for double post, attachement didnt work. How can I remove a posting? cmivfxtest.hipnc Edited December 13, 2009 by haggi Quote Link to comment Share on other sites More sharing options...
haggi Posted December 13, 2009 Author Share Posted December 13, 2009 I have tried this, but I didnt get the correct result if I specify the objects in the group of the solver. I simply put two versions in a switch to compare in case you want to have a look. Quote Link to comment Share on other sites More sharing options...
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