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Found 80 results

  1. Hi, Is it possible to use more than one Agent Layer at a time? For example, I have an Agent with naked skin geometry as the default layer. I want to add a random shirt, and random trousers and then random shoes. However, the randomize layer in the Crowd Source node only allows picking ONE layer at a time. Any tricks out there that allow this? Many thanks, Dan
  2. Houdini Crowd Locomotion Issue

    Greetings there!!! I'm having a strange issue with Houdini Crowd in 18. I'm using MOCAP data from Mixamo FBX and have multiple animations. Ive configured the crowd but unable to get Locomotion if the Skeleton is Exported as InPlace from Mixamo. But the Locomotion works if I export as Locomotion and then "Convert to In-Place Animation".... Dont know what's Wrong.... Any Solutions???? Regards
  3. Hi eveyone, I'm hoping to get a little help from a Crowd person on here. When making an Agent, how do you get different parts of the geometry to be different Agent Shapes? Let's say I have a mesh from an FBX. The mesh is a single piece, however the primitives have an attribute called @shop_materialpath I want all the primitives with @shop_materialpath = "shirt" to be one Agent Shape and all primitives with @shop_materialpath = "skin" to be another Agent Shape, and so on. Am I making sense here? If any kind person can help me, I would be grateful. Many thanks Dan
  4. Hi, I am attempting to make an HDA for Crowd in order to try using it in Unreal. I've used Houdini Crowds a bit but I'm not a Houdini super-wiz and I know even less about setting up HDAs. I could use a little help. I have got to a point where I have an HDA which accepts Agent Definitions in one input and some points in another input. That seems to work OK (in Houdini, at least. I haven't tried Unreal yet). Now I want to 'embed' my agent definition into the HDA. Is that possible? I have tried using the 'extra files' section, but I'm certain I'm not doing it right. How can you read the embedded files? I have read the manual, and tried the following: opdef:.? opdef:../..? oplib:.? etc, etc, and many variations., but nothing seems to work. How is it done? I include my test file if you can spare a minute and set me straight. Many thanks in advance! Dan HDA_test_v03.hipnc
  5. Hi, I'm trying to find a way to pin multiple iterations of the default biped to points of an animated deformed geometry, via the crowd system, but with the ragdoll activated. Actually, as if the body was literally nailed, hanging to the points, each part of the body moving accordingly to the point position, ragdoll on each. Like a dead doll whose limbs would move according to the support on which it's nailed… In other words : kind of similar to the effect of a copy to point operation, but where each copied body would benefit from it's own independent ragdoll effect, while every one sticks to its corresponding moving point. I managed to populate each point of my target geo with the biped, but the default behavior, when using the “populate” command, defines that each point is the spawn location of the crowd agent. Collision layer and joints, ragdoll is activated, but I can't find the way to pin each body to a target point, and make the ragdool work as I want. Maybe some of you masters of H will have some ideas on how to constrain each members of a crowd to a point, on a ragdoll state ?
  6. Simple Ragdoll Setup

    Hi guys, I'm working on a ragdoll setup where the characters are just falling. There's no transition between states. I did it pretty much from the shelf and now I'm stucked. Here's a couple of thing's i'd like to do: 01 - Get rid of the Walk State. Right now my setup have a Walk and Ragdoll State and I'm using a trigger to change states right on the first frame. It's working but can I keep this setup clean without this useless state? If I switch off the Walk state the characters get super messy and I have no idea why. My knowledge on crowds is really limited btw 02 - Custom Character. How can I put a character from Mixamo? I rigged this custom character there but coudn't make it work like the Mocap Biped 1 (I'll make a file showing the issue later. Can't share the one I have now) 03 - Mix some different models. I haven't even tried this and I have no idea on where to start. (Solved) 04 - Control the bounciness and friction of the ragdolls - the parameters can be controlled on the crowdobject 05 - Add initial random velocity for the limbs. Right now they're too rigid before they hit the ground Any of the questions answered would be really helpful on this work. Thank you RnD_0103.hiplc
  7. CG Master Academy is searching for active industry professionals using Houdini for crowd simulation to develop and teach an online course. Flexible scheduling with a 3-5 hour per week schedule footprint depending on class size. Minimum Requirements: must have 4-7 years of professional experience in feature film/animation and/or game projects and a current demo reel showcasing work specifically in procedural modeling. Preferable: Some experience teaching or training artists would be helpful in this role. Please send resume/work history, as well as a link to your website and/or demo reel, to jobs@cgmasteracademy.com.
  8. Crowd blendshape

    Hey wonderful people ! I can't figure out how to use blendshapes on crowd agents. When i use the agent button in the crowd shelf, my blendshape appear in the intrinsic attribs of my agent, also comes it's value. I manage to change that value with the vex function "setagentchannelvalue" but the shape of my agent doesn't change at all. Here is a quick example Thank you. Crowd_BlendShape.hipnc
  9. Crowd

    I would like to start the learning the crowd, which one would you prefer Goleam or houdini crowd Which has more pros and cons Excited to hear from you, Thanks advance
  10. Interaction between Crowd and FLIP Solvers

    Hi All, The interaction between Crowd agents and FLIP simulation is one way : agents clearly influence the FLIP Simulation, but I have troubles to get the FLIP Sim move my ragdoll agents. I have already put the Feedback Scale to 1 under FLIPSOlver / Volume Motion tab / Solver. I have seen that particles interact with ragdoll agents, so I have created a POP object and added a POP Solver. The POP object is feed with the particles of the FLIP fluid at every simulation time. And I add a mass and pscale attributes to the particles. Now I have a better interaction between the ragdolls and the FLIP sim... but my agents now start to act as "spaghettis" under impacts of particles... I have tweaked the constraints (CFM, position CFM, position ERP etc.) but I can't enforce the position constraints and my ragdoll are really streched... Any ideas how to solve that ? Maybe a better way to make FLIP and crowd ragdolls better interact ? Any video / course / lesson / ressource where people have played with that a bit ? Thanks for your help crowdFLIPtest_v1.hip
  11. A question about crowd transitions

    I've got a few animation clips ( clips 1 - 5 ) appended to my agent. Then I built transition graphics from clip 1 to all other 4 clips, and I see a little spider web formed while viewing the transition graph ( which to me means they can now freely travel from each other ). I then set up everything in the dopnet and randomized the initial clips on my source, plugged in the crowd transition graph into the crowd object and hit play, ready to view all my animations randomly transition between each other. But all the solver did was to loop each clip's initial state, and only the one crowd agent who started on clip 1 ran through all 5 clips ( I assume this is because I've actually set up all the possible transitions for clip 1). Which leads to my assumption that I need to build a transition graph for EACH clip to EACH OTHER clip for what I want to achieve to work ( crowd agents randomly transition between clips )? I might not have worded this question well, but I don't know how to make it more concise. Thanks!
  12. Hey guys ! I have a simple crowd agent that I put some anim onto in SOPs What I do on the agent doesn't really matter, what I need is to export the agent with the animation to FBX I tried simply exporting it with the FBX ROP, but the result was a point cache with no bones How is one supposed to export a Crowd Agent to FBX ? I searched online, and haven't found a working solution Attached is the simple setup in Apprentice (I know Apprentice can't export FBX. That's just an example scene from my home - at work we have the FX version) export_agent_fbx.zip
  13. I am exporting a rest and a animated FBX from Maya. In Houdini I am creating an Agent SOP loading the FBX at rest, then Agent Clip loading the animation FBX directly from disk. (shelf tool for Agent) The animated FBX does not read properly, the geometry is collapsed onto itself. Could you please share the best practice for exporting FBX from Maya in this scenario please? Any settings that I should be particularly careful of on export? Any specific requirments for rig hierarchy and constraints/bones?
  14. Hi! I am trying to do simulation using crowd system. Agents should decide wich 1 of 3 splines to choose depends on smallest popgroup number in destination point. Could anybody help with VEX in popwrangle? Hier is a scheme attached. I think to use splines because houdini has not navmesh like unreal engine has. And navmesh as far I know just splits polygones and draw optimal spline on its chunks in direction of movement. This should simulate 3 lines in a shop. Agents should go where is not to much people waiting
  15. Crowd Agents Bundle

    Hi all, Do you know if exists any bundle of houdini agents that we can buy? Not just the geometry and animations but a pre-existing HDA that offers models and movements that we can use in ours crowd pipeline.... Thanks
  16. Hi all, There's anyone who knows how to export a crowd sim in a single geometry? I got an example that have a single agent with some animations clips. Because of my company's pipeline I need to render it in 3d Max. Exporting a Alembic successfully but when I import it into Max every instance of the agent is a object. Is there a way to export a single object by agent? Thanks...
  17. Hi all, I'm getting the following error "Warning: Vex error: Clip transition graph does not contain any points." in the transition node in a simple state transition. Anyone knows what that means?! I go a simple example with a sit character that I want to trigger to get stand up..... Thanks
  18. Hi, trying to do a « world war z » kind of shot, with human/zombies pyramids. I have only one clip for the moment (I wanted to manually animate my agents as a training), so no variations, no ragdolls yet. Just trying to layer my crowd in pyramid using a base terrain + local deformations on which i scatter points that are used as goals for my agents (with priority attribute to get the agent on the bottom of the pyramid arriving first... so lots of POP Wrangles and customs systems, but for a poor result yet :-) The plate is coming from a urban exploration group called Black Raven, that kindly accepted that I use it. Shot with a DJI phantom 3. I matchmoved it with 3dequalizer. Advises are welcome if you have ideas on how to reach these human pyramids :-)
  19. Hi guys, Is there any way to access point attributes in crowd setup to tweak the ragdoll behaviour? popforce seems to break the whole thing and each agent is processed as a single point but somehow still able to run bullet sim in ragdoll state but with limited capability. Thank you C
  20. Multiple Agents/Model for Crowd

    Hello, I'm new at Houdini and I'm trying to understand Crowd system. I'm trying to create basic stadium crowd. But I need to define different animations and models. I googled my question much but I can't find anything... Is there any chance to define different models to crowdsource node? Thanks!
  21. Crowd agent transition issue

    Hello, I have a question about agent transitions. Right now it seems that agents will not accept a triggered activation if they are currently in a transition state. In my example attached the agents start running at frame 5 and should stop running any frame after 15. They won't stop until after transition 1 is complete. Is there a way to interrupt a transitions state blend to transition to another state without setting state transition duration to 0? -Kjell Transition.hip
  22. Crowd with flares

    Hi, i have single smoke flare sim, and i need somehow attach it to crowd agents, to be able randomly time shift smoke with agents. Any ideas will be appreciated, thanks!
  23. Hello everyone. I'm setting up a crowd scene for a massive battle scene. There are a lot of props inside the system and corresponding materials assigned by "style sheet" however when I scrub or play the timeline maps vanish. They don't get erased they still show up in render however the viewport shows default grey material. How can I fix this?
  24. Hi all, I'm exploring Houdini Crowds and would need FBX cycles to test my scene. Can someone point to online FBX resources or any personal FBX cycles, free to use for testing and learning. Thanks in advance
  25. 我需要让人群朝向我的目标物体(只有旋转,没有位移),我的目标物体正在移动,所以我该怎么做,伙计们? (google translate): I need to make the crowd face my target object (only rotation, no displacement), my target object is moving, so what should I do, guys?
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