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Nicole replied to Nicole's topic in General Houdini QuestionsHi Adrian, thanks so much for your help and for uploading an example file. I've been through your setup, made a couple of changes and it's looking much better than my original file. I've added in some nodes that convert the blue VDB to an SDF, dilate it, then convert it back to a fog VDB (inspired by your idea to add in the peak SOP). This makes the colour extend beyond the density which helps get rid of the pink fuzzy edges. I had to uncheck 'fill'interior' on the new VDB you added because I need consistent colour throughout the volume as opposed to a falloff. I'll work on applying this setup to a more complex model, still open to ideas so I can continue to improve my method. Thank you!
Nicole started following Mix VDBs with different densities and colours in Houdini?
Nicole posted a topic in General Houdini QuestionsHello I am trying to mix/combine the density and colour of two different VDBs into one VDB in Houdini (image 1, file attached). For the most part, this is working as desired but there are two main issues: 1. Pink fuzzy edges around the blue VDB - How do I get nice clean edges where the blue VDB smoothly fades out to transparent? (image 2) 2. Blue VDB does not go all the way to the border of the pink VDB - How do I make sure both VDBs finish on the same outside border? (image 3) I have tried adjusting the voxel size, changing the set up of the VDBs (ie. the exterior/interior band voxels, fill interior) but I can't seem to get it working the way I want. Can anyone please help me? I have only been learning Houdini for just over a month so example files would be helpful. Thank you! Mix VDBs.hip