cwalrus Posted January 7, 2016 Share Posted January 7, 2016 Hi guys - i have my sim looking the way I want it in a R and D scene. Then I import an FBX and the geo in the FBX is 1000 times larger than the R and D scene. I need the geo in the FBX scene to emit smoke in the exact same way as in the R and D scene - but even if I type .001 on the "Uniform Scale" of the FBX Subnetwork node, it still has massive xforms within the FBX network - Anyway I think you can tell what I"m asking - how to I Scale my imported FBX geo and camera down to the scene size of my R and D so that the Sim reacts the same way? THANKS!! Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 7, 2016 Share Posted January 7, 2016 (edited) I normally do this by putting attaching the fbx to a master null and use that to scale it. Edited January 7, 2016 by Sierra62 Quote Link to comment Share on other sites More sharing options...
cwalrus Posted January 7, 2016 Author Share Posted January 7, 2016 I hate to ask this (stupid?) question - but where do you attach the master null? The FBX comes in as a four-input subnetwork node... I figured out what worked for me: I went into the Fbx subnetwork node, then dropped a master null and attached that to the camera and the geo, and scaled it down. Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 7, 2016 Share Posted January 7, 2016 Are you going to be rendering from Houdini using the camera in your FBX? If so I often get artifacts in the render when using a camera that is scaled down. To get around that I usually use a basic chop network to transfer the scaled transform to a new camera. Quote Link to comment Share on other sites More sharing options...
cwalrus Posted January 7, 2016 Author Share Posted January 7, 2016 You know what - i may be seeing that right now. do you mean like this? could you give me a quick step by step for setting up that CHOP network? I am daunted by Chops....! Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 7, 2016 Share Posted January 7, 2016 It is pretty straight forward. I have attached a sample scene, I hope this helps. camera_chop.hip Quote Link to comment Share on other sites More sharing options...
cwalrus Posted January 7, 2016 Author Share Posted January 7, 2016 Thank you so much, mate. Quote Link to comment Share on other sites More sharing options...
michael Posted January 7, 2016 Share Posted January 7, 2016 at some point I'm going to be forced to build a camera rig that can load fbx and alembic cameras... Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 7, 2016 Share Posted January 7, 2016 at some point I'm going to be forced to build a camera rig that can load fbx and alembic cameras... I think I have heard you talk about doing this a few times now. Quote Link to comment Share on other sites More sharing options...
michael Posted January 8, 2016 Share Posted January 8, 2016 I think I have heard you talk about doing this a few times now. well I'll put it on my list... Quote Link to comment Share on other sites More sharing options...
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