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eldrich

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About eldrich

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  • Name
    Rich Eld
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    London
  1. Hi there, I've got a ROPfetch that's rendered 4 wedges of 144 frames, 1152 frames total from (currently) two entries in a .csv file. I've got an ffmpeg node below it that's hell-bent on taking only the name of the first entry and rendering a mov of it 1152 times. I'm new to TOPs and only a few months into using Houdini, but have been going around in circles trying to partition by row (if that's even possible). What I'd like is: Column1, row1 = 144 frame mov of: wedge1.mov, wedge2.mov, wedge3.mov, wedge4.mov Column1, row2 = 144 frame mov of: wedge1.mov, wedge2.mov, wedge3.mov, wedge4.mov Ideas?
  2. Hi there, I've rendered an A over B composite as part of a TOPs network. I've got sequential frames out and it's comping based on upstream renders, but don't know enough to get ffmpeg to 'see' that they're sequences, it's making a one-frame .mov out of every work item. What I want is more like the Mantra ropfetch node, where there's a 'Cook frames as single work item' option (though that introduces problems when the renders crash, but anyway) which means there's only one thing to ffmpeg, and it's a list of frames. Hlp?
  3. I left a TOPs network rendering some camera angles, but it's stopped with missing frames in one of the sequences (1-112 where it should be 1-144) Dirty and cook returns done. The caveat is I have 'Cook frames as single work item' on for post-processing nodes (ffmpeg and then some python in this case), when I deselect this I get all the frames and it picks up. How can I get it to check the frames, discover which are missing and pick up where it left off? OR would it be better to let it cook individual frames and then group the output by filename and push that into ffmeg?
  4. Some strings in my CSV have white space (spacebar) and some have unusual characters that Windows and Houdini don't like, such as Å. In a TOPs network, how can I create an attribute `@cleanName` without these characters? ie: MY HÅT becomes MY_HAT Something like this, but dynamically. mystring.replace(" ", "_") If someone could help with the whitespace I can work out the rest. Thanks!
  5. Hey folks, I'm executing a Windows .bat file which is written out by a pythonprocessor TOPs node to run some things on another sever. Everything works if I hardcode the filename to the batch file, but I want it to generate and execute .bat files for each work item I'm trying to access `@filename`in the pythonprocessor, but not getting anywhere. How can I access the attribute so .format fills in the path correctly? PidginCode: outFile = `@filename` filePath = "path to directory/{}".format(outFile) The sample file docs are bereft of examples so I'm wondering if I'm going about it the wrong way. Thoughts? EDIT: I made a string parameter on the node I'm querying and pointed evalParm at it. Is that the most sensible way? node = hou.node('/obj/topnet1/nodeName') parmName = str(node.evalParm('parm'))
  6. Hello, hopefully someone can help. I have a creature exported from Maya as an Alembic where some of the normals were reversed. I’ve blasted out groups of those points and reversed the normals, then merged them back in. It works fine on frame 1, but as I scrub time the point numbering changes, so the points defined in the group are wrong. Can I make the numbering stick so groups work? What would a Houdini artist do? I’m primarily a Maya artist, and in Maya the CVs ID doesn’t change. Could it be to do with how I exported the alembic? I don't have a Maya licence at home so can't easily re-export to check the options.
  7. Thanks David, I'd rather learn the Houdini way than transpose a load of destructive Maya habits. I'll give this a go today, thank you for helping.
  8. Apologise for noob questions, I've only about 100hrs of Houdini so far, after over a decade of Maya use as a lighting TD. I have a file SOP of kitbash models from the link below. The come in as one mesh, obviously I'd like them as individual objects at the origin with centered pivots. There's no polySeparate, of course - but I can select points and modify-tab > extract and then in the object_merge node select transform: into Specified Object But this kitBash SOP has a hundred things in it. So: How would I go through all the separated hulls and create new objects from each? Sounds like a job for a Python, which is probably how I'd approach this in Maya. "for each hull in fileSop:" kind of thing. I realise there's the 'Maya' way of thinking I need to kinda drop, but at the moment it's the only way I know. Thanks in advance! Obj from here : https://gumroad.com/olegushenok
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