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Found 69 results

  1. Hello! Is the .obj export to other software disabled in Houdini apprentice 17? I'm just trying to export a simple grid geo for testing purposes. I tried the ROP geometry output, the Right click & Save Geometry method as well as the file node set to write mode & can't seem to open the file in either 3DS Max or Softimage. Max gives an error "nothing found to import..." and Softimage gives no error & loads nothing in the scene... so this has something to do with Houdini's obj export imo. The curious part is, I can import the .obj back into Houdini with the file node & it loads fine... I can also export .obj's from Max and Softimage & Houdini also opens them without problem so I don't understand what's happening... *EDIT*: The problem is resolved. Seems like the culprit was a pending system restart from Windows that updated a bunch of .NET framework versions. Exporting from/to Houdini now works without issue.
  2. Hey there, I'm currently working on a project with some models that I've exported as alembic files from C4D to preserve the polygroups, so I can add the materials back onto the model when I re-import. When I reimport the alembic files they have a really strange reaction to Octane Render. I don't really know how to avoid this as some exports seem to be okay but some just give me this weird lighting effect. Has anyone come across this before/ knows how to avoid it, or can point me in the right direction as its hard to tell if its Houdini or Octane :s Thanks, Joe
  3. Hello, I encounter major problems when exporting an alembic sequence from houdini 17 to maya 2018. I traced the problem down to the “build hierarchy from attribute” option combined with rendering frame ranges into an alembic-file. Attached is a test file, to rebuild/illustrate the problem: export an alembic file with build hierarchy from attribute “name” ON —> import in Maya causes crash or empty transform nodes, but the hierarchy would be there export an alembic file with build hierarchy from attribute “name” OFF —> import in Maya with animation works fine - except that I don’t get the correct hierarchy I’m aiming for. Is someone encountering the same behaviour and has a solution for that? Or is it only at my system/setup? I’m working with Houdini 17.0.352 and Maya 2018.5 (but it didn’t work in any maya version between 2017 and 2018.5) Any help would be appreciated. Thanks! Joko alembic_export_maya.hiplc
  4. Hi everyone ! As says the title, I want to export scalar values attached to voxels (VDB) into a 3D matrix because I want to access to voxel data into another software (matlab) does someone know how to do that ? thanks ! Alex
  5. Hi, I'm a very new user to Houdini and sorry if this has been asked before, but I searched for everything that made sense to me and couldn't find a forum post. I may just not yet know the right Houdini vernacular to search for. What I want to do is to be able to leave a simulation running over night, where it would repeat the simulation using a set of different params (set by a global seed for example), and output the resulting geometry. For example, maybe I want to sim a rock fracture, and I want 100 different rock fractures. Could someone point me in the right direction for a tutorial, documentation, example file, other forum posts. Anything that could help me start. I would prefer not to have 100 copies of the sim next to one another and run them parallel because I like my computer as a not melted pool of metal. So I would like to serialize it if possible. Thanks in advance!
  6. Hello everyone, Here is my problem, i'm new as houdni user and i followed the embroidery tutorial from entagma, once finished I have added some extras stuff but my problem is when I want to export, I want to export by color ( or group color ) but I don't know how to proceed. Can somebody help me ? Thank you everyone . link to the tuts : http://www.entagma.com/fakebroidery-needlework-in-houdini/
  7. Hi, Is it possible to export animated geometry (Alembic/ OBJ sequence etc) from Houdini Apprentice? Thanks a lot Josh
  8. Hi, I'm trying to find a way to export nested .ass files - for example with a crowd. I can get a crowd exported using alembics using this method - but I was wondering if anyone could point me in the right direction for exporting, say, each agent as an arnold procedural within a single arnold procedural i.e. nested. cheers
  9. Export Quicktime Error

    Hey guys, I'm having a hard time exporting mov files on H17. I can only export avi files and the files are pretty huge. This is the error. Does anyone knows what it could be? Thx Alvaro
  10. Houdini23ds max through Alembic

    Hello, So, first I exported flip tank particles in .abc format then I load that in 3ds max with vray proxy. But how to render them with proper whitewater or ocean shader? It is rendering a blobby mesh in my case. And there is also absence of particles in some frames and some kind of clipping in between. Can someone please guide me in this. Thanks in advance.
  11. Pyro to Maya

    Hey magicians, What's the best pipeline to export pyro to maya? I'm working at houdini scale and I think maya scene is x1000 so I'm worried that the smoke probably will look bad. Any tips will be really appreciated Thanks!
  12. Hi forum. I am trying to export simulated curves from Houdini into Maya using Alembics so they drive the XGen anim curves. I have exported curves from Xgen into Houdini and connected them to the 16.5 Hair System and simulated them. The problem is the Alembics from Houdini are exporting all the curves as shape nodes under one curve, instead of exporting each curve separately. XGen's Anim nodes wont read these. Does anyone know how to export curves from Houdini into Maya with Alembics without them packing?
  13. XML Export Tool

    Hello, I have a python script that saves geometry data to xml (that is later used in the game engine). I would like to make something similar to the ROP FBX Output node to save the xml file (to make it consistent with the other Save to Disk nodes in Houdini). I tried different HDAs/Asset types but they all look the same and they're not exactly like the ROP FBX Output node. (same look, same flags, available in the geometry network view, can't be opened, no outputs). Is there a way to change a HDA to have all those features or do I have to look into HDK? Thank you
  14. Combine clustered pyro into one domain/object to export for render in v-ray Maya? Thanks in advance.
  15. Hello I have an animated Alembic file which I am piping through the instant mesh SOP ( game shelf tools ). How do I export the mesh's state at each frame into separate files ( Obj/Fbx) ?
  16. I would like out to export out a Smoke Trail simulation as a VDB sequence so I can import it in a different package. Because the smoke is clustered I can't figure out how to export it out. It only seems to export out one cluster. Setting $CLUSTER in the Rop Output path doesn't do anything. I think that variable is used if you distribute the sim on different machines. I only have 1 machine. Redshift displays there are multiple density channels and the file size of each frame get larger even though the displayed cluster is empty on further frames. I'm using the Smoke Trail shelf preset as a starting point. Eventually I'd like to simulate a long smoke trail along a moving object. Unfortunately I couldn't find any information about this. I'm using Houdini Indie. Thank you for your time.
  17. Hey Forum! Basic question here: When using Houdini Engine with UE4 - Do we need to manually bake out color maps and other uv maps such as those generated from the erosion tools in houdini (flow, debris etc.) ? I have no problem importing the .otl into unreal via Houdini Engine - but it is not clear how Unreal/Houdini share all the data that exists on my points in houdini… Thanks, Sam
  18. Hi ! I have some problem with export :S I imported alembic file from C4D to Houdini and simulate some props. then, I cached that simulation and export with ROP Alembic Output node. and when I import that abc file at C4D, All textures gone T_T Where Do I have to add Rest position and UV texture nodes ?? It is too difficult to me Help me ! I set up my nodes like this. Imported alembic file -> blast props -> unpack each prop, add rest position and uv texture node -> pack -> simulation(DOPNET) -> file cache -> convert node (If I didn't add this node, Houdini get fatal errors) -> ROP Alembic Output. At the pack level, I added ROP Alembic Output and export it for test. and It works ! but when I finished simulation and cache it, use convert node and ROP Alembic Output nodes. Its Textures are gone T_T How Could I do ?
  19. export camera?

    Hi, I cannot find this anywhere. How do you export a camera from Houdini? Here is what I tried: I created a new geo node, then object merge node, merged the camera then changed transform to into this object. I used a file node then export. When you import it, the camera is there and moves correctly, but when you go to choose camera there is no camera to choose. I tried creating a camera, then changing the defcam.bgeo to my directory, but that did not work either. What do I do? My end goal is to export a camera to another houdini scene and to maya. Thanks
  20. Hi All, In Houdini 16.5 Alembic rop export, the build hierarchy from attribute behave differently now. In the past, I need to pass a proper hierarchy naming ie: /group1/geo1/geo1Shape and all the transforms will be stored in geo1 and loaded as expected in Maya. Now when I do exactly that, this is the hierarchy I got in Maya: /group1/geo1/geo1_instance1/geo1Shape Where all the transforms are stored in geo1_instance1. In a way it's good to catch any shape nodes that is not exported with its parent transform in path attribute. Is there any way to make the old way work? How do I control the "_instance" naming part in path attribute? I would like to output the hierarchy EXACTLY like how I set it up in the first place. Thanks
  21. Export issue

    So I´ve been trying to export my mesh and animation to Marvelous Desinger. It works everything is there, but the size in marvelous is really tiny, which will mess up the simulations since it´s to small. Tried to import it the mesh inside Maya with meter settings and it´s tiny there as well. So, can I tell the fbx to export in meter, or do I need to change the scene size somewhere, even tough Houdini works in meter ?
  22. Export issue

    So I´ve been trying to export my mesh and animation to Marvelous Desinger. It works everything is there, but the size in marvelous is really tiny, which will mess up the simulations since it´s to small. Tried to import it the mesh inside Maya with meter settings and it´s tiny there as well. So, can I tell the fbx to export in meter, or do I need to change the scene size somewhere, even tough Houdini works in meter ?
  23. Hi family i have a geometry that went through a simulation, now in sops i have point position data, how is it possible to export an array of the position data across all frames of a desired point?
  24. Hi all, I want to import a particle simulation from houdini to Maya without using the Houdini engine and render in Redshift. I made a way around it stamping spheres into particles and exporting them as Alembic, but the file is too damn heavy. Do you have any suggestion? Thanks in advance.
  25. Hello, I was wondering if anyone could share the correct workflow for face sets in alembic. Currently I'm importing an alembic from C4D that contains polygon selection sets which are passed through the alembic. When I export the alembic back to C4D, after passing through my rig node tree, the sets are lost. Can anyone shed some light on this?