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Found 15 results

  1. Noob question In the sesi documentation it suggests to use __PDG_DIR__ instead of ${PDG_DIR} for filename paths. ok, I tried and only received errors in the graph when cooking ROP Geo Output. That's the first issue 2nd is a noob question on proper use of envirnment variables in TOPs What is the difference between ${PDG_DIR} $PDG_DIR/ and __PDG_DIR__ ? I'm on Linux (Ubuntu 18.04LTS)
  2. PDG Mutagen

    Anyone successfully install the PDG Mutagen shelf tool? https://www.sidefx.com/tutorials/pdg-mutagen-toolset-walkthrough/ If you're using PDG in a production environment is it useful? Any issues?
  3. Trying without much luck to recreate the video wedging mosaic demoed by Scott Keating here https://www.sidefx.com/products/pdg/ For some peculiar reason the video is not directly linkable and there is no .hip file but it is halfway down the page in the AUTOMATE section, Wedging video. I am trying to create the TOPs node graph in the attached but not sure what all the nodes are. In the left column green box of course is a ROP geometry output , and in the right column red box there are 5 nodes. #1 is ROP Fetch I think, #s 4 and 5 are Wait For All and I think FFMPEG Encode Video respectively. But what are numbers 2 and 3 in the right column, Generate_Contact_Sheet Wait_for_Entire_Sequence ? Also anyone know of a working example of TOPs based video mosaic for simulations?
  4. Hi Having a huge headache simply trying to install this shelf tool for PDG wedging. https://www.sidefx.com/tutorials/pdg-mutagen-toolset-walkthrough/ At first it seemed to install correctly, could load the shelf tool and see the icons but when trying to load the python panel got a Non-ASCII character '\xc3' error. So tried adding #coding=utf-8 to the top of the file. Also mistakenly rightclicked the shelf tool and chose "Delete Shelf Tab" However now I cannot even add the pdg mutagen shelf tool back! It no longer exists in the drop down when I click the + icon and choose "Shelves". Can anyone explain what I am doing wrong?
  5. Hello folks, so, i have a bunch of houdini file with a top node at OBJ level, all file have the same structure and are in the same folder I would like to cook the TOP node from external, Python or another TOP graph. I tried in a background script to access with hou.node('/obj/topnet').parm('cookbutton').pressButton(), but it seems that doesn't cook anything Any idea ? Thanks in advance
  6. Hi Everyone, I'm trying to setup a TOPs network to cache out sims with multiple parameters being sent to the dop network. Seemingly basic stuff, however nothing I'm doing seems to be working how I think it's going to work. What I've tried: Using a wedge node to set a random attribute and trying to use that attribute in an exterior dop network - caches into a view able geo rop output but all the wedges were the same Rebuilding the pyro sim purely in the tops network - it makes something but when viewed all the frames appear empty Have the source inside the tops and the dop outside - same result as the first
  7. PDG Question

    Hi! I have small PDG graph that grabbing models by one from disk, doing some basic stuff with it (UV's, materials etc.) Then I load geometry to /geo, in same hip file, where I have camera, lighting setup and render node. So when I clicking on work items in topnet I see models in scene through the camera. Here is my question. Basically I have only one angle for camera that is suitable for bunch of models but not for all, so I need to incorporate some manual camera controls and somehow save camera settings for current work item. Is there a way to change camera settings only for certain work items? How can I setup such thing? Thanks in advance
  8. Hi there, I found exactly what I'm trying to achieve in the Houdini docs but no step by step guide how to achieve this: https://www.sidefx.com/docs/houdini/tops/looping.html "Imagine an RBD simulation where a jar is being filled with marbles, one handful at a time. The entire process could be run as a single simulation, however marbles at the bottom of the jar might become unstable and the numbered of simulated objects would keep growing. One way to manage this is to run the RBD simulation for the first handful of marbles and use its results as a static object in the second simulation. The result of the second sim and first sim combined would be static objects in the third sim, and so on. You can do this in TOPs using a feedback loop with a ROP Geometry in the loop block" can anyone shed some light on this please? cheers S
  9. Hi there I am currently making a HDA that takes a mesh, does an infection solve and spits out resulting textures; I have finally got my top graph cooking fine however I am a bit lost as to how the user will actually trigger it from the HDA interface. Promoting the force cook on the topnet doesn't work and even when normally activated, it seems to use up all houdini's threads as opposed to a cook from within the graph. I have also been scouring the pdg python module docs to see if I can trigger the network to cook from a callback script. The furthest I have got on that front is the cook method on both pdg.GraphContext and pdg.Node objects. pdg.GraphContext.cook() seems to want a CookOptions object which I don't know how to generate or manually create. pdg.Node.cook() wants a block argument and I am also lost as to what that is, I've tried using block=1,1 etc I found a py file called top in /houdini/python2.7libs/pdg/job/ which contains a function called cookTopNode. This looks promising however I don't know how to call it nor which module/object it is a member of. I'll provide a scene file if needed, just needs a bit of decluttering first Any help is greatly appreciated. George
  10. ok so some progress with PDG following Ari's tutorial, https://vimeo.com/323291527 but getting ImageMagick running properly on OSX is a total PITA! After installing, adding proper pathing to houdini.env it runs but no support .exr by default. Get the following error So thinking I need to install OpenExr I do so and get openexr 2.3.0 is already installed and up-to-date Any ImageMagick experts able to suggest a solution? Guessing this will be easier on my Ubuntu box....
  11. I have a heightfield as part of an HDA that is remapped. If I manually press "Compute Range" in the Heightfield Remap sop it works.... but I need to do it from an HDA processor inside Tops. I promoted the "Compute Range" parameter (button) on the HDA. It works. Then I get it inside Tops HDA Processor via the Update HDA Parameter button... BUT in there it comes as a checkbox. If I check the checkbox it does nothing. How does one enable Compute Range from inside an HDA Processor node in tops? If not, is there a way in vex to the the min and max for the voxels of the heightfield? Thanks
  12. Hello everyone, I am trying to speed up surfacing tasks using this simple method from Entagma (https://vimeo.com/323270525). I am on Centos 7 and when I monitor CPU usage, it goes maximum at 35% and doesn't use all cores. Is anyone experiencing similar behavior or have any info to share about Houdini and CPU usage at Linux?. Thank you.
  13. Pyro source Wedges TOP

    Hello all, TOPs are amazing and definitely boost the amount if iterations I can create overnight. Hope you will help me to fill some blanks. I would like to Wedge pyro source with different noises and amounts of Fuel and temperature (9 different `@wedgeindex` 1-50 frame range) and feed those sources into the wedged pyro sim. Please see the basic setup example is in the attachment. PyroTopTEST005forOF.hiplc
  14. Hi, I have 2 a computer "farm" setup to render out PDG wedge iterations. Rendering it with Mantra works fine with local scheduler as well as with HQueue. Redshift works just fine with the local scheduler but when rendering with HQueue it renders out just one frame of my iterations without any error messages. The frames are numbered by @wedgeindex which apparently worked for 3/4 of the cases listed. Any ideas? Thanks Hendrik
  15. SideFX Houdini Masterclass - Louis-Philippe Clavet Following the Everything Procedural conference, Breda University of Applied Sciences will host a two-day SideFX Houdini Masterclass by Louis-Philippe Clavet. This is an unique opportunity to learn, experience and get acquainted with one of the most versatile procedural content generation tools. Day 1: SideFX Houdini - Procedural Animation Houdini has long been known for its great ability to reproduce the motion of many natural phenomena through its dynamic operators. Even if they are fantastic tools, some movements are hard to generate with these systems. A procedural animation approach seems to be a great alternative to infuse life into a cg scene when artists need more intuitive ways to bend motion to their will. Through skillful attribute manipulations and a clever use of CHOPs, you will experiment what can be put into motion with a limited use of dynamic simulation and keyframe animation. This masterclass is a collection of test scenes built to showcase the versatility of procedural animations in Houdini. It is intended to Houdini users of all levels, but requires a good knowledge of how to navigate the software and its interface. Day 2: SideFX Houdini - Procedural Dependency Graph (PDG) Discover the new context introduced in the most recently announced version of SideFX Houdini. Houdini now offers us a visual management system that handles all tasks and all dependencies in which TOPs (Task Operators) are the new set of nodes tailored to improve workflows and pipelines. Learn how to deal with the challenges of creating and working with a great amount of data. Experiment how this system can also help artists to automate tasks that they do on a daily basis. This masterclass is an overview of the new technology. It is intended to Houdini users of all levels, but requires a good knowledge of how to navigate the software and its interface. The Masterclass is a two-day event (both 9:00-17:00) and takes place on Thursday April 25th and Friday April 26th. The Masterclass will be hosted in a workshop setting with live presentations, demonstrations, hands-on experimentation and exercises. You need to bring your own hardware (laptop is sufficient) to be able to actively participate. http://everythingprocedural.com/ https://twitter.com/everythingproc https://www.facebook.com/everythingprocedural