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Found 29 results

  1. add a GLTF for Houdini

    HEy, How hard would it be to add the capability from on of the open source libraries and add GLTF loader to FileIO for houdini? -k
  2. Import attribute into VOPS

    So I started watching this excellent tutorial about creating a spiderweb and got 3 minutes in.... https://www.youtube.com/watch?v=LFkzD9cgxek It's over my head with the coding at the moment so I thought I would try to create the same with SOPs and a bit of VOPs. I got pretty far pretty quick, and everything works so far (some dodgy maths, and weird values that work), but I am stuck on the VOPs bit. I want to randomise the rotations for the spar angles, I have them setup as primitive attributes, each one having a different number. I can get the attribute into VOPs (I think), but I'm pretty stuck at how to implement the randomisation per piece/attribute. Any help appreciated. HIP file attached. ) spiderweb_v002.hip
  3. Group of friends and I are starting a small project, and while we're doing all rigging/animation in Maya, some characters rely on effects that would be much more easily achieved in Houdini. These are generally quite basic, and we're looking to minimise the amount of shot-specific work to be done - I'll ideally write the effect once, and use it over the whole show. Once I have an abc or fbx export, what is the best way of reading that in Houdini to the maximum level of detail? For example, one character has panels of LEDs that form screens, which in turn display depth maps calculated from each LED's normal - there are about four hundred separate LEDs, so ideally I would have a locator for each one, with X facing out the normal, bake out character anim as fbx, import into Houdini and just instance a setup across each locator - I don't know how to do that. Others require things like sparks between contacts, thrusters, etc. How is it best to achieve this? Via Metadata? Naming convention? Custom attributes on locators? The other approach is to use HDA in Maya, which I know nothing about - ideally would like to keep the two separate, if nothing other than to make look dev easier. Let me know your ideas. Thanks!
  4. Hi guys, I have imported a very simple obj from 3ds max and I am trying to apply a curl noise effect to the surface of it... I have played around with the amplitude etc but nothing seems to create very long lines and it looks pretty awful.... (I have attached an image...) When really I want to be getting an effect like the image below my image.... does anyone know why this may be? I am wondering if it is a scale issue perhaps? I want it to stick quite close to the geometry which has long trails but does flick off the geometry every now and then like my reference image.... Any help would be great! Thanks Matty
  5. How to import obj with python?

    I'm trying to script a multiple obj importer, could someone tell me how to do a basic obj importer equivalent to the "File" SOP... Here's what I have so far.... node = hou.pwd() geo = node.geometry() import os import numpy as np folder = r"PATH TO FOLDER WITH OBJ's " models = [f for f in os.listdir(folder) if f.endswith('.obj')] rand = np.random.randint(0,len(models)) path =os.path.join(folder, models[rand]) print os.path.join(folder, models[rand]) obj = hou.node(path) obj.createNode("geo")
  6. I'm trying to set up a structure that allows me to import 2D images, PNG/Jpegs into Houdini. Side FX has documentation for this: http://www.sidefx.com/docs/houdini11.0/io/ai Researching this i came across a couple of tutorials, saying that if you want use images you should go for .eps files This is the tutorial i tried to follow, since it covers the Adobe softwares: I'm not sure what's going wrong, whenever i upload my images there doesn't seem to be an error, but I just can't find my imported asset. Any ideas? Cheers, Callan de Keijzer Desktop.zip
  7. 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.
  8. Hi, I guess thats a pretty easy question but I couldn't figure it out yet. So I have an obj import that consists out of a big amount of pieces. Importing it to other apps brings in the materials too. So I just can work on those materials insteat of reselecting everything. Importing that obj to Houdini doesn't show any materials. Why is that?
  9. Hi, I'm new to both houdini and HDK. Curretnly I'm trying to import some raw image into the houdini. There are no headers in those raw images and each pixel is a 4 byte floating point value. I've tried both plugin way just like what IMG_SAMPLE does and FBio table way but both of them failed. Neither the structure of plugin nor the structure of image loading program used in FBio table was well explained or companied with a good sample. I'm kind stucked, so can someone please help me with it in ways like explaining it in a little bit more detail or informing me any already existing plugin or tools I can use. Thx a lot! Cheers!
  10. Hello, i'm new here so i have a simple one for you I've only been working in Houdini for the last year, and i never imported geometry from C4d into Houdini. I was wondering how do i prepare the geometry from C4d. I don't need to modify it, i just need it as a poly or a poly mesh... Thanks, and i'm glad to have found this place, you are all great and Houdini is just the greatest and the most fun tool to work with.
  11. Hello, i'm new here so i have a simple one for you I've only been working in Houdini for the last year, and i never imported geometry from C4d into Houdini. I was wondering how do i prepare the geometry from C4d. I don't need to modify it, i just need it as a poly or a poly mesh... Thanks, and i'm glad to have found this place, you are all great and Houdini is just the greatest and the most fun tool to work with.
  12. Hello, i'm new here so i have a simple one for you I've only been working in Houdini for the last year, and i never imported geometry from C4d into Houdini. I was wondering how do i prepare the geometry from C4d. I don't need to modify it, i just need it as a poly or a poly mesh... Thanks, and i'm glad to have found this place, you are all great and Houdini is just the greatest and the most fun tool to work with.
  13. I have an animated cabinet that i have imported to Houdini from Maya as an FBX. I want to drop cutlery into one of the draws in the cabinet, i have imported the spoon .geo and made the cabinet a static object and the spoon an RBD object. when i drop the spoon onto some parts of the cabinet it lands fine. I want to drop it inside the draw before it opens but when i position it above the draw and play through it doesn't move, it is just frozen in the air. Im guessing its a problem with bounding boxes? Sorry im new to Houdini any help would be greatly appreciated! (Sorry for the bad angle, the draw is closed)
  14. GeoJSON Importer

    Hi All, If you need to work with Geo-Spatial data on a regular basis like I do, you might be interested in the GeoJSON Importer (SOP HDA) that I have started developing. You can grab it from here: https://github.com/danleesmith/HOU_GeoTools Some basic Info on the Importer: Houdini Geographic Tools Custom Python GeoJSON importer Digital Asset for Houdini (HDA). This importer reads GeoJSON files only. GeoJSON is quickly becoming the standard geo-spatial interchange format and can store point, line and polygonal features with associated attributes. The GeoJSON standard can be found here: http://geojson.org/ Limitations This importer only works with projected coordinate systems. An explanation of the difference between projected and geographic coordinate systems can be found here: http://tech.ced.uga.edu/kb/articles/difference-beteween-projected-and-geographic-coordinate-system The importer also requires that any NULL or EMPTY attributes, which are allowable in many GIS systems, are mapped to -9999. This will ensure that when the attributes are written in Houdini they can be stored as either 0 for numbers and '' for strings. NOTE: Polygon/Primitive Holes (known as donuts in GIS) have not been implemented in the importer at this stage. Data Prep To prepare you data and convert your spatial files to GeoJSON I recommend using QGIS: http://www.qgis.org/en/site/ OR if you can get your hands on a licence give FME a go: http://www.safe.com/ Usage This HDA is a SOP based asset. 'GeoJSON File channel' is used to point to the desired GeoJSON File for importing. If you want to import many GeoJSON files in the right location relative to each other just drop down a new Import GeoJSON node, toggle on 'Use Reference Features' and point the 'Reference Features' channel to the desired Import GeoJSON node. The attached images show the Importer in action. I hope you find this useful and please send through any suggestions you have!
  15. I'm having trouble importing .obj files into Houdini. 90% of the time it doesn't work and the file node will say "unable to read file". I have tried checking the mesh in modo and running a mesh cleanup, exporting another .obj. But these files don't import into Houdini either. I have been opening the obj files in Modo and saving them as an alembic which Houdini doesn't have a problem opening. I'm wondering what is wrong here. I'm running an indie license but I don't think there are import restrictions. Does anyone else have this problem? Is there a way to prepare the .obj file for import? thanks
  16. Hi, rookie question: Why is it that when I import an Alembic camera from Maya into Houdini, it makes the whole scene insanely large. The camera moves a massive distance and as such I am forced to create massive grids and simulations with attributes set to numbers in the thousands. This is really hard to work with and creates clipping problems if you move close to the geometry, which i cant seem to fix even in display options. I'll attach the scene file and the ABC camera file (not sure how to attach them in the same file). So import the ABC file yourselves Basically the camera is leading a car straight along a road and there is going to be a dust storm in the background and also dust trailing behind the car. If you convert the tube in the scene to Billowy Smoke, it comes up with a warning saying 'Object level scales detected. A new object has been created to convert to world space'. Which I suppose is a way of saying 'Hey, your scene is super massive and could be fixed somehow'. I'd like to know if there is some way to import the same camera, but have the scene scaled to a suitable size so i dont have to put huge numbers in while experimenting with smoke, particles etc. Thanks Scene01.hipnc Camera Alembic.abc
  17. hi friends like the title says I am trying to get the Houdini ocean fx to Softimage, both the mesh and displacement. the displacement images created in Houdini as a pic file doesn't seem to work. anyone has a suggestion on work flow to get them to Softimage? cheers
  18. hello odforce, not sure if this is the right section but heck. As I as search the internet for tutorials I got some inspiration and wanted to try something. I saw a tutorial inwhere the pointsofvolume sop was used. I used a testobject for this sop and it worked. But know I thought, this should also work with animation. I had imported a fbx and wanted to connect it to the pointsofvolume sop. But I can't reach the fbx since the fbx is on obj level and the pointsofvolume sop in a geo. Im looking for a method to import the fbx in this geo sop. Can someone help me out? I have added a picture for clarity
  19. Import alembic file with python

    Hi, I'm quite new to houdini scripting and I wonder if there is a quick solution to import an alembic file. Kind regards Hadrien
  20. Hi everyone, I come here today to ask you if it's possible to import a Vray Cam from 3ds max to houdini keeping all parameters. I don't know if the post is in the good category, if not sorry Have a good day ! Thanks.
  21. Export constraint with RBD geo

    I'm breaking some cone twist constraints in a sop solver (by placing them in the broken group) and I would like to use these constraints to then emit debris and dust. So my question is how can I export the constraints out along with my geometry to be used later? And is that the best method for emitting debris etc.?
  22. I was testing to transfer particles from Houdini to Maya,i use Cortex plugin to go into Maya,since Maya default importer sucks like 3dsmax roadmap So i was triying to get rotations, so far i cant get to work. Anyone tried this? Thanks
  23. Hello, This might be such a simple question/answer... I'm have animation, done in Maya and the scene scale was set to centimeters. I exported it as an alembic and imported it into Houdini. Now it's massive (or at least in relation to the grid) and I've got to add some effects to it (more specifically, the flat tank for), the trick is that I have to convert the particles/fluid to geometry and export it back to Maya to fit with the rest of the shaders and rendering. Would it be best if I just scale the alembic uniformly down in Houdini and work off of that? (I have parented it to a null and scaled the null to 0.01 and still got kinda weird results). Any insight would be greatly appreciated, thanks.
  24. Hi guys, I face some problems when I try importing in fbx from 3ds max. I attached 2 screenshot , the top one shows the geo in max, however after importing it in to houdini, some parts seems to offset away? Did I do something wrong with the settings? The fbx is attached as well if you want to test. Thanks in advance for your help guys!! -Darren *EDIT : Uploaded the correct pictures *EDIT 2 : Can't seem to upload the fbx file
  25. Hello. I have a question about pyqt or pyside. I made a simple pyqt. I typed some scripts in Python source editor like... ############### import sys sys.path.append('Z:/Script') try: reload(simple_qt) except: import simple_qt ################ It is working very well in python source editor in houdini. However, when I made a button on houdini shelf, it is not working well. First when I press a button, a ui pops up. But there is no pop-up after the first press. Then I add one more line... ############### import sys sys.path.append('Z:/Script') try: reload(simple_qt) except: import simple_qt reload(simple_qt) ################ This is working, but you know, one more execution happens right away after one execution. I think It is not good for script. If anyone know about this, please help me. Thank you.
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