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Found 125 results

  1. Hey guys, i have an alembic animated file (there's no deformation) and I have to convert this object to a vdb mesh (vdb from polygons >> convert vdb). I did it on a static frame (using timeshift) and now i'd like to copy the original animation to this new mesh. A copystamp does copy the position but not the rotation. Can you guys help me with this? Just to make things clearer (this is not the original scene, i'm kinda faking it so i can share here) this is the alembic character animated: then I made this new mesh from it: i need to transfer the position and orientation from the first one to the second one. I guess i could make it with a packed object since it have just one point Thx! RnD_copy.tansformation.v1.01.hiplc
  2. guided ocean from animated geometry

    Hello this question was originally asked here (and I hav https://www.sidefx.com/forum/topic/46028/ "I am wondering if it's possible to simulate a thin layer of ocean from any given geometry mesh in houdini?" Or from my input mesh that is a deforming animated plane? It is basically wave previs anim from Maya -- I am looking to drive a flip sim with this animation similarly to bifrost guided parameters: In the sidefx forum I linked someone mentioned "- detect position of flip particle if it is below or above the surface if below the surface but the distance with the surface is below a certain threshold advect it by the point velocity. if the distance is more than the treshold it get deleted every frame." I was wondering if someone can headstart me with how to go about this implementation, does this process need to be done within the solver? Thank you all for your time! -Shane
  3. I have a Digital Asset of my character. It is animated in the animation scene. Is it possible to transfer animation to another scene with the same asset with standard Houdini tools?
  4. Animated Impostors

    Hey All, I've been trying to work out a simple pipeline to generate a crowd from impostors for use in Unreal 4 using models from Fuse with animations from Mixamo. Creating characters in Fuse is extremely fast and simple, and the one-click option to send it to mixamo to rig it and load in animations opens up a lot of potential for easy crowd generation. However, with a lot of projects shifting towards VR / AR these days we need more and more efficient crowds. The impostor workflow offers a great solution for that, and the GameDev Impostor Camera Rig + GameDev Impostor Texture ROP really set it up to be really nice and easy to generate the output - but I'm running into some issues and could use some outside opinions. For reference, I'm following Mike Lyndon's documentation here: https://www.sidefx.com/tutorials/generating-impostor-textures/ So far, the following steps are working out pretty well - 1) Create Character in Fuse 2) Rig and Animate Fuse Character with Mixamo 3) Import FBX to Houdini 4) Extract FBX Geo to new Geo node 5) Create new Mat inside new Geo node, remap existing materials 6) Create GameDev Impostor Camera Rig at obj level 7) Create ROP Network, create GameDev Impostor Texture inside ROP network 8) Direct Camera Rig towards Impostor Texture, Direct Impostor Texture towards Camera Rig 9) Set Impostor Texture to 'Animation' mode and render out to $HIP/TEST/${OS}_${WEDGE}.$F4.png (or appropriate directory / filetype, this is for testing purposes) The problem I run into is at render time; the ROP is intended (afaik) to render out the frames of animation, rotate the camera, and then render out the frames of animation again from the new angle. It does exactly this, but overwrites the first frames of the animation each time the camera rotates. I thought the _${WEDGE} portion of the file naming would handle this but it doesn't seem to be appended to my filenames. Right now I'm getting "rop_impostor_texture1.0006.png" where 'rop_impostor_texture1' is the name of my impostor texture and '0006' is the frame. Any thoughts as to why this might be happening or possible solutions would be appreciated. Please let me know if any specific screenshots would help (ie. the ROP, Camera Rig, etc). UPDATE 001) **NOTE: This only applies to non-production build 1.20; the naming is set up properly in production build 1.12** Solved the naming / output issue, it turns out the GameDev_Impostor_Texture rop was looking for the wrong output picture parm. This is the field that needs to be re-directed for the output to work as expected: Also worth noting is that if you assemble the sprite sheet expecting the Unreal shader template to work, be sure to have the animation frames in the Y axis and and camera rotation in the X axis. The next major hurdle for me is to try to reduce the camera rotation range to 180 degrees, since I don't need the back views of my crowd characters, and to limit the animation frames... which I'm more concerned about at the moment. I need to retarget a 64 frame animation down to ~16 frames or less. The fewer I can get it down to, the potentially higher resolution I can let the individual sprites be. More updates to come.
  5. Hello all, Getting to it I have a camera in Maya with camera shake enabled. I know baking can only work if the Horizontal Shake and Vertical shake options have been moved from the background to the channel box with the Channel Control in the shape node of the camera. Once it's baked I export it as .fbx into Houdini(16.5 if it matters). But the camera shake still doesn't show up in Houdini. Also of note, I looked through the camera settings in Houdini and I don't find anything similar to a camera shake option in there, so maybe because there isn't a setting it won't use that baked information but I am truly stuck. For fun I attached the camera, don't know if it's useful but its there. TL;DR = Camera shake from Maya camera doesn't import into Houdini, what do? Thanks. Edit for all the people out there. The solution is to just not use .fbx. Just use alembic guys, it works. Hopefully somebody else in the future will be able to use this advice so they didn't have to be me scrolling around google for two hours. CameraExport_01.fbx
  6. Hello everyone! Even though I've had many help on odforce it's my first time posting. As the title says I'm trying to figure out how you would use particle velocity to increase and decrease the speed of a looping animation. I have done it with a copy stamp but I was wondering if there is any other way around it. Thank you in advance
  7. Hi guys! I am working on a project that needs a spirit moving through a scene, it needs to be like flowing smoke with a glowing light effect so that if reflects on objects in the scene. I cant work out how to emit light from the smoke and move with the animation, i have been playing with both volume lights and geometry lights but i cant get either to move with the animation, they both stay at where the animation is on frame 1. I have tried selecting the volume and creating a volume light from that, and also using the original animated geometry before it was turned into a volume and making a geometry light from that, but neither use the animation. Can anyone suggest what i am missing or doing wrong? Or way to get the smoke to emit light and use the animation to move? I have attached a r&d scene file and a play-blast of my problem as it stands at the moment, any help would be really appreciated! smokeLight_001.hipnc smokeLight.mp4 smokeLight_001.hipnc
  8. Hey all, I am quite new to Houdini and am wrestling with an issue. I have used table import to add a list of values to a set of primitive's attributes. The attributes of the primitives is then set to change to the next columns value in the list every ten frames. I then poly extrude by this value. Therefor each primitive extrudes by the value it has been individually given which changes every ten frames. This however means that the animation is not smooth and jumps every ten frames. The best way I thought to smooth this was to find the sum of the current frame and following 9 frames and then dividing this value by ten. Therefore finding the average value over the ten frames and smoothing the transition between values. Is it possible to write such an expression? If so how would it look? Cheers
  9. Hey Came to London to work for Crowd at MPC. Here's a summary of the challenges I responded to in Houdini: At the moment, I'm looking for the next thing to hop on. Most jobs for Houdini are VFX centric and I'm mostly a generalist leaning more towards geometry, rigging and motion processing side of things. Here's some public Orbolt Assets: https://orbolt.com/search/?q=probiner Building one right now to upload, to alike the matrix one, visualize arrays of vectors: https://i.imgur.com/ZPki1XN.png Let me know if there's something fit mid-term going be it for Houdini or XSI or even just if you're around and want to have a chat! Thanks
  10. Hello, today I am facing very difficult problem, maybe you could help me in this struggle. Scenario looks like this: I received animated tree exported from SpeedTree as an alembic file. Now in Houdini it looks like wind is moving leaves which is perfect. The problem is I would like to collide with the leaves with RBD objects which are bouncing around my scene. I would like to keep my “wind” animation on a tree but make the tree responsive to any objects that may collide with it and make it so the leaves would bend on collision. Is it possible ? If so what would be the way to achieve such effect. Have a nice day and thank you for your input in advance. P.
  11. Some Looping RND Animations

    I'm not working in a studio setting anymore, so I've been doing random little houdini experiments to challenge myself, and keep learning new techniques. It's been a lot of fun. https://www.instagram.com/rycofx/ Hey does anyone know a better way to present these than instagram, or have a suggestion for a good GIF converter for linux?
  12. Houdini Lighting Artist - Interference Pattern

    Houdini Lighting Artist Interference Pattern are recruiting for a full-time Houdini Lighting Artist. The Role We are looking for a Houdini Artist to take a lead lighting role on projects. An ideal candidate would also be skilled in Nuke (or similar compositing package). The Role requires a broad knowledge and experience of the entire 3D Pipeline, with a focus on producing polished lit shots. We appreciate that potential candidates may have varying levels of experience; we are primarily looking a proven track record in turning out great looking work using Houdini and a candidate who can demonstrate a strong sense of visual aesthetics. Responsibilities Responsible for final Houdini 3D scene assembly and output, including Digital Asset creation, setting up lighting and rendering final outputs. Working closely with a project’s creative team, directors and clients to define the best approach and execution for projects. Optimize and troubleshoot lighting and rendering problems. Additionally candidates may be asked to work on compositing final shots dependant on experience. Shading/texturing work as and when required. Requirements Demonstrated knowledge and experience of Houdini within a production environment. Strong understanding of multi pass 3D rendering and compositing. Strong understanding of lighting/shading/texturing principles and techniques. Knowledge of rendering techniques and optimization processes to minimise render times. Ability to work within a style established by the Client / Creative lead. Experience with Nuke or similar compositing package (eg Fusion). Programming or scripting skills would be beneficial, but not essential. Ability to problem solve and predict potential problems. Strong communication skills are critical. Artist must be able to work within a team, taking direction and exercising attention to detail. Solid work ethic and a positive attitude in the face of challenges Strong time management skills and organization. Minimum of 3 years production experience and a degree qualification required. If candidates do not possess a degree, 5 years production experience required. Degree and work experience requirements may be waived if candidates can show exceptional skills. Currently be able to work in the UK. Able to be located on-site in Edinburgh About us We are a small and perfectly formed animation studio based in Edinburgh, one of the most beautiful cities in the UK. We do a diverse and interesting range of work, including documentary features, commercials and original shorts. Application process To apply, please send us your CV, cover letter and links to an online showreel or portfolio to info@interferencepattern.com Job Type: Full-time
  13. Senior 3D Artist - Interference Pattern

    Do you want to come and work at a vibrant and passionate animation studio, based in the beautiful city of Edinburgh? If the answer is yes, then check out our current job opening below. …about Interference Pattern We are a small and perfectly formed animation studio based in Edinburgh with a diverse and interesting range of projects in the pipeline, from documentary features to original shorts, working in 2d, 3d and vfx. …about Edinburgh Edinburgh is the beautiful, historic and vibrant capital city of Scotland. With a blossoming creative arts scene and great access to the rest of Scotland it offers the best of both city living and the great outdoors. Senior 3D Artist We are recruiting for a senior level 3D artist for a full-time position at the studio. Ideally the candidate should have a minimum of 4 years production experience, with some of that time spent in a more senior artist role. This timescale is negotiable depending on an applicant’s portfolio. A generalist 3d skill-set is required, with strong lighting and compositing also being an advantage. The role will entail most aspects of 3d production, with a focus on modelling, texturing, lighting and compositing, with rigging and animation, if covered within the candidates range of skills. If you have a more technical mindset then there is also scope for contributing to the development of our studio pipeline and procedures. Start date is negotiable depending on the right candidate for the position, but we are aiming for immediately. If you relish the prospect of working in a dynamic, growing animation studio this could be the perfect position for you. Responsibilities working on all aspects of 3d content for studio projects from modelling to lighting and compositing working closely with a project’s creative team, directors and clients to define the best approach and execution for projects Requirements Artistic Requirements a generalist 3d skill-set strong lighting and compositing a bonus portfolio showing both photo-realistic and stylized 3d examples an attention to detail and ability to self-critique Personal Requirements minimum of 4 years production experience excellent problem solving skills an ability to guide and direct junior members of the team a strong track record in successfully delivering projects within deadlines, whilst meeting the required quality and creative criteria currently be able to work in the UK. able to be located on-site in Edinburgh Technical Requirements (bonus) familiarity with the following software would be a bonus (but not essential) Substance (Painter & designer), Photoshop Houdini, Maya, Zbrush Nuke scripting and coding skills a bonus Application process To apply, please send your CV, cover letter and links to an online showreel or portfolio to info@interferencepattern.com
  14. Hi guys, I'm having some trouble using bone length for squash and stretch as its giving me crazy deformations that I cant fix. (see attached file) if anyone knows how I can solve this, it would be much appreciated. Also, the other problem is, how would I implement volume preservation with the squashing and stretching? In maya, we would use the joint scale but Houdini seems to give weird results if I scale bones. Any help is much appreciated. Thanks. rigging_bone_stretchy_problem_01.hip
  15. Hi guys, I'm having some trouble using bone length for squash and stretch as its giving me crazy deformations that I cant fix. (see attached file) if anyone knows how I can solve this, it would be much appreciated. Also, the other problem is, how would I implement volume preservation with the squashing and stretching? In maya, we would use the joint scale but Houdini seems to give weird results if I scale bones. Any help is much appreciated. Thanks. rigging_bone_stretchy_problem_01.hip
  16. Houdini FEM stops at frame 800

    I am trying to sim a 1000 frames of a FEM coral with branches swaying in water currents. For some reason it freezes at frame 800. I checked all the DOP nodes, and couldn't find anything obvious. What am I missing? softCoral.FEM.paintWidth.h16p5p378.v27.hipnc
  17. Hi everyone - been fairly quiet on here of late due to work and life being a bit hectic! anyways i'm looking to achieve a cloth simulation on my Deadpool character. I've modelled the character in maya to a fairly decent resolution overall. He's textured to a fairly decent quality too. But i want to push it and achieve some cloth simulation if i can on him to get it to a further level visually. This wont be for all shots but if i could achieve it on some slow motion shots that would be epic! heres my thought process... obviously with him being animated i want to fire out an alembic cache from Maya to Houdini. i may need to potentially remesh it so there are plenty of triangles? Then assign cloth parameters to my mesh. but he'll need collision geometry inside possible - so its likely i'll need to setup that geometry in maya and export that as collision geometry too? Hopefully with some time spent on decent sim quality i'll get some nice crease results around the joints ? then i'm stuck on how to deal with various bits around his body - stuff like the leather strap that holds his swords on or the arm braces. Then of course the belt round his waist. I then need to get this back to maya for rendering in vray so i reckon alembic export afterward should help. I should be able to find a way to preserve uvs. My texture is a simple drop-on - one shader does it all! Is this all a bit brute force do you think? I'd love to get some thoughts from you chaps If theres any of you VFX gurus out there in film studios that could offer me some advice? If you worked on the films or other stuff all the better lol! Thanks in advance hope you like what you see below Ant here's some screenshots.. UDIM texture layout... Should give you an idea of the mesh resolution... to give you an idea of what i'm up to you can check out this teaser here. I'm planning alot more than this teaser shows off and some expected Gore and guts so there'll be some amusing tomfoolery with FEM and grains for @Farmfield to have some lolz with hehehe
  18. Hi, ODfellows! This is my first post. I'm glad to in the company of experts. I'm hoping some kind soul can help stop my accelerating hair-loss. So... I'm trying to tie a basic shoelace style knot. I've made groups for the ends of my wire to make "aglets" (the bits on the end of shoelaces), but I'm having trouble guiding them around. Am I missing something obvious? Thanks! Slideshow Blob
  19. Hey magicians! I wonder how can i replace particles with animated geo looping over time? Here is a example video Any tip to drive looping geo by particles or how to achieve something similar will be great Thanks!
  20. Hello, I am creating some tutorials, mostly character and rig oriented (which is my favorite part of software) whatever I see it may be useful for others and I am good in it I record! https://www.youtube.com/channel/UCM_yYXvQrgbMFThS1RVzBnA See you.
  21. I need some help with making this corals and animation. I wanna make that corals to be shaked when I blow wind. If I already have those corals modeling, Do I have to make it to cloth objects ? I really have no idea with this T_T I'm just beginner If you have any good Idea about it, please let me know ! and about making procedure corals too Thank you for reads
  22. Hi Could you explain me how can I make this scene at 02:50 in this video ?? If you let me know tutorial about this, It'll be big pleasure to me Thank you , and have a good day !
  23. Hi I can't seem to export my rigged character from Houdini as an FBX to come into Motionbuilder with the bones. It seems that only the nulls and controllers are coming in (which is the opposite that I want). I am using 16.5 and it looks like there has been some changes in the fbx export. Has anyone done this successfully? What where the FBX settings? Thanks in advance for the advise. Rob
  24. Hi, I'm trying to import a houdini character to ue4. I'm following Varomix's tutorial > https://www.youtube.com/watch?v=o8A2U3jmng4. I can't seem to get any animation sequence when importing the simple female walk cycle, using identical settings as the video. I've attached a screen recording of the settings. If anyone has any tips for importing to ue4, that would be a huge help. Thanks in advance RecordingEdited.mp4
  25. CHOP's Frame limit

    I am in the process of setting up several camera rigs following the same piece of geometry with lagged "look at" constraints. The lagged Nulls I have made the camera "look at" only behave as they should up until frame 240, after which they stop moving completely, despite the scene length being 1000 frames. I have attached the .hip file, any suggestions are much appreciated. Thanks! CHOPsBug.hipnc
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