Jump to content

Search the Community

Showing results for tags 'crowd'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • General
    • Lounge/General chat
    • Education
    • Jobs
  • Houdini
    • General Houdini Questions
    • Effects
    • Modeling
    • Animation & Rigging
    • Lighting & Rendering
    • Compositing
    • Games
    • Tools (HDA's etc.)
  • Coders Corner
    • HDK : Houdini Development Kit
    • Scripting
    • Shaders
  • Art and Challenges
    • Finished Work
    • Work in Progress
    • VFX Challenge
    • Effects Challenge Archive
  • Systems and Other Applications
    • Other 3d Packages
    • Operating Systems
    • Hardware
    • Pipeline
  • od|force
    • Feedback, Suggestions, Bugs

Found 46 results

  1. Hello node friends! I have kinda of a problem when rendering crowds with motion blur. Since they are packed prims, I cant get my deformation blur to take effect. I'm loading a single rest shape as my base shape for the agent and rig. Then loading 15 fbx with just the animation. So far so good, it simulates the crowd, as all the transitions I need and so on. When it comes to render, I can get all my stylesheets working, but when I try to render with deformation blur, I cant only get it working when the agents are unpacked, any suggestions? I have my blur samples to 16 and geometry motion blur enabled. Sorry if my englando was bad or confusing. cheers
  2. OK, I have a crowd. I'd like to define a 2D bounding box for each agent from a given camera using the toNDC. I've unpacked the crowd, defined each vertex screenspace position, and now I'd like to put the minimum and maximum values back to the original crowd. I thought some kind of relation between to packed and the unpacked crowd, is it possible?
  3. Hello! I'm stuggling with texturing my crowd. Random texturing for the agents themselves works fine, but I've added shapes which I can't adress in the stylesheet. It seems like I'm loosing my primitive group when adding the shape to the agent layer. So my question is: How to keep the shapes primitive group when adding to the agentlayer? Or am I missing something and there is another way of applying (random) textures on the added shapes?
  4. Hello, So I have agents that are climbing using a locomotive clip. Each hand pulling the rest of the body up and the other etc. At the moment the way I have it having the pivot set to the hand joint for the first pull up. Then I'm using xyzdist to find the closest prim on the deforming object. Then I use primuv to have the agent hook onto that. This only works for the initial pull up, once it tries to pull it's self up with the other hand it just stays on the same location. I need a way to switch the pivot of the agent to another and keep the already moved up position of the previous frame when the other hand is locked in place. A more advanced way would be able to tell when the other hand is moving etc but i;d be fine with just inputting that data for now. Anyone got some ideas how I can achieve this. I've been trying to get this to work with solvers and getting the position of the other joint on the frame before it needs to change but using that to offset the next hand is not working. I think I was probably on the right track but my comprehension of the solver node is spotty and just gives me a headache.
  5. Hey folks! I'm working on a crowd scene. I set up an attribute to store unique RGB color for each generated agent. In the material builder I use bind parameter nose to incorporate the parameter. I set up the extra image plate too. It works properly with all other objects, but it doesn't work with crowd. I need the RGB color I need to control the RGB and also export it as a text file Cheers Szabolcs
  6. Hey, I have been trying to create groups from FBX subnet, which can be accessed after the crowd simulation done. So I can apply different base colors through Material Style sheet and I am also curious to know if I can export different groups of object to other 3D packages if I have to render it there. what I want to do is, I want to create primitive groups which can be accessed after unpacking the agent SOP. So I can access that data for further process. I somehow manage to make the groups based on the shaders applied to particular objects, but some of the shaders were not included in the groups, I would like to have a proper work around for this. Or is there any particular method to make groups during exporting the fbx from maya ? Thank you All.
  7. 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
  8. I'm working on my first ever crowd and I'm trying to use the Look At node to make agents in a certain area look at an object. However, I noticed that unless I check the "Enable look at" in the crowd solver node, nothing happens (even if I use an "Look at apply" node). On the other hand, whenever I do check the "Enable look at" (even before I plug in the actual Look at node and specify the object), all of my agents heads turn and twist a bit. I tried using the group to limit that twisting, but to no avail - it seems like the group actually looks at the object, and all the other guys get changed just a bit. I don't want that! I want the heads of the guys outside of the area to remain normal, without the random twists. The fault is for sure not in the group. I tried both the shelf tool and the node.
  9. Hi all, I'm building a crude crowd-like system using POPs and I'd like to copy my imported walkcycle on to the particles with a random timeoffset. The old method of copystamp with a timeoffset value on a timeshift node works - but it's really slow. I've been reading up on the for-each / compile block method but I'm unable to compile timeshift or file nodes. So my question is - is it possible to do it with a for-each/compile setup or am I stuck with the old copystamp method?
  10. Hello node friends ! I have a problem in hands here. Basically I'm doing a stadium crowd sim. So far so good. I'm then doing the shading over on the material style sheet and rendering with mantra. I also have a cloth sim with the same proprieties over on that style sheet. The problem I have here is the following: I can render the flags over on the farm with the IFD generation, I've included the SHOPs on the mantra ROP. That part is solved. When it comes to rendering the Crowd, it just renders black. I've tried caching out the results, using procedural geometries and the procedural agent SHOP but it still renders black. I can render it just fine on my machine, when it comes to the IFD rendering part, the machines can't render it. Notice that I have all the agent caches and maps over on a shared network drive that it can access, otherwise the cloth wouldn't be able to render it either. Any ideas?
  11. Hello node friends ! I have a problem in hands here. Basically I'm doing a stadium crowd sim. So far so good. I'm then doing the shading over on the material style sheet and rendering with mantra. I also have a cloth sim with the same proprieties over on that style sheet. The problem I have here is the following: I can render the flags over on the farm with the IFD generation, I've included the SHOPs on the mantra ROP. That part is solved. When it comes to rendering the Crowd, it just renders black. I've tried caching out the results, using procedural geometries and the procedural agent SHOP but it still renders black. I can render it just fine on my machine, when it comes to the IFD rendering part, the machines can't render it. Notice that I have all the agent caches and maps over on a shared network drive that it can access, otherwise the cloth wouldn't be able to render it either. Any ideas?
  12. Hello node friends ! I have a problem in hands here. Basically I'm doing a stadium crowd sim. So far so good. I'm then doing the shading over on the material style sheet and rendering with mantra. I also have a cloth sim with the same proprieties over on that style sheet. The problem I have here is the following: I can render the flags over on the farm with the IFD generation, I've included the SHOPs on the mantra ROP. That part is solved. When it comes to rendering the Crowd, it just renders black. I've tried caching out the results, using procedural geometries and the procedural agent SHOP but it still renders black. I can render it just fine on my machine, when it comes to the IFD rendering part, the machines can't render it. Notice that I have all the agent caches and maps over on a shared network drive that it can access, otherwise the cloth wouldn't be able to render it either. Any ideas?
  13. Crowd and Volume collisions

    I have baked agents loop for crowds. I need some hints how to generate smoke, dust on the each crowd agents footsteps for walk, run on a dusty terrain adaption in compositing for example, at what level does it have to be done?
  14. Hi all,I wonder is anyone else is having the problem I am experiencing:I have a simple crowd sim: 1. I have one agent defined from a FBX. The agent is generated in a different hip file and baked out. In my simulation scene, I am accessing the agent from ‘disk’2. I plug this agent into the crowd source node.3. I simulate my crowd source, using the shelf tool. All good so far.4. I have some geometry (waving flag) saved out as a bgeo sequence, which is brought into my crowd system as packed primitive sequence. It is then attached to my simulated agent with the Agent Relationship node.5. I save the scene.6. When I press play or try to cache out my geometry, I get ‘segmentation fault’, Houdini bombs out and I can not load my scene any more. Not only that, I cannot load the backup scene or even any other scenes I have ‘saved_as’ along the way. As soon as I try to load a hip file, I get a segmentation fault again and Houdini bombs out. Weird.I have remade my agent (with new name) from scratch and remade my simulation scene multiple times and this crash keeps happening.Has anyone seen this kind of problem? What can I do to recover my hip scenes
  15. Hello everybody! I've got one agent for a crowd simulation. He's holding a sword on his R_hand. When using Agentedit node, Im able to adjust transformations of that controller, which is great, but it affects all agents in the same way. =( What would be the approach to randomize the wrist rotation to get some variation over to the crowd sim ? Thanks!
  16. hey guys got a good un for you I attended a thingy in london some time ago and basically there was a vfx guy who was demonstrating how they setup the spaceship battles in the first guardians of the galaxy. So it got me thinking if i can use a spaceship as a little crowd agent and maybe transition from one ship pose to another as its affected by velocities. Are there any good workflows in houdini? I'm currently using a crowd/agent setup. I've got a little spaceship model with a basic idle on the spot and thats exported as a .fbx from maya. and wanted to have it so it transitions to another state (wings back when accelerating) when they move forward (another exported clip). Ideally it would be better to have say 100 points that move in space and on each point is a spaceship thats aligned by the points movement. anyone tried this in the past or got any good suggestions? cheers ant @Farmfield @mestela any good thoughts on this one? I'm guessing i can use points and a popnet possibly to control the flight of my spaceships - the idea of using the crowd is to get them to 'animate' based on what they are doing
  17. Crowd Rendering in Arnold

    Hi guys. Is there anyone here who is rendering crowds from H in Arnold? Arnold doesn't support packed primitives, so: I'm trying to figure out how to leverage instancing at Rendertime in Arnold so that rendering really big datasets(hair, cloth included) is possible. Are there any smart ways/workflows to go about this?
  18. Hey, I am attaching a shape to my agent's hand (via agentlayer). Is there a way to disconnect the shape from the hand and make it rbd (as to drop to the floor)? Thank you!
  19. Hi everyone, Here's a weird one: I am trying to use the crowdsource to copy a simple agent animation on a point sim. It is basically a swarm test. Now the problem is that when I try to render my agents they render as boxes. So far I have done a couple days of research but I didn't seem to be able to find a solution or anybody with my same issue. The simple answer that I gave to myself was "use the copy sop with some timewarp stamping for each point" but the copy sop gets too heavy to quickly. Does anybody have an idea of what am I doing wrong? I have attached a zip file with the hip and the fbx of the bee animation. Thanks for your help! bees_test.zip
  20. Crowd Simultation: Translate/Rotate

    I am new to Houdini. My goal is to create a scene with multiple formations of marching soldiers. There will be no opportunities for collisions, so that will not be an issue. I have an fbx model with animation. I can create an agent, a single crowdsource (in formation) and simulation. That works. My question concerns translating and rotating the individual formations in the scene. The action takes place away from the origin. Should I translate the agent there first, then create the crowdsource and simulation or create the crowdsouce(s) at the origin and translate them to the desired location or translate the simulation node? My experiments have produced some results that I don't understand so before blindly hacking out something that sort of works, I would like to know how an experienced user would approach the problem.
  21. Hi there, working on a system with Houdini crowds in which I have a bunch of bugs writhing around on a dudes body. I can get one agent with multiple clips working no problem but when I try to add another agent (via a merge before I plug into crowd source) the clip attribute does not respect the agent group. That is, a maggot clip is being assigned to a mealworm for example. Of course the mealworm (second agent given to the agent group in the crowd source sop) gets screwed up in dops. While the first agent is fine. All of the examples I've found deal with only one agent. Is it possible to have multiple agents (say 10 different types of bugs) all working in the same crowd simulation? thanks in advance, nik
  22. hey everyone another crowd question - is there a way to emit crowd agents ? Right now i have a scatter node born from a circle that generates my crowd agents but it would be nice if i can birth them? I tried creating a popnet and used a poplocation to generate points one at a time (approx one every second) - my hope was that i could get these to become agents but i cant seem to pass that info through to the crowd setup ? anyone any know how on tackling this? thanks! ant
  23. hi guys i'm trying to generate an exposion with a crowd of ragdoll characters - i have them walking to the centre of my scene then i use an expanding ball shape to blast them outwards. it sorta works.. its working quite well overall but from above i get this clear ring.. so is there a way to use a force instead to knock them outwards? I'm guessing it would be a pop force potentially but i cant seem to get that to work weirdly its like they dont affect the particles at the helm of the crowd sim?
  24. hey all another crowd question - is it possible to make the crowd drop the weapons they are carrying when they collide with my object and turn to ragdolls? It only seems to be stuck in the characters hand and it would be awesome to put layers like weapons and helmets on them and have all that fall off when they are hit with my object? right now my agent has an agent layer in that is pointing to the hammer mesh i built (simple shape built in another sop network) - its constrained to the hand nicely but how would i get those to disconnect when the character turns to ragdoll? Would it be another trigger setup?
  25. quick one this and i cant seem to get it working.. got a crowd system giong - i have my characters run towards cam and as they get close to an object they stop and transition to an arms up movemnt. it seems to work... but my prob is they seem to pile into one another in one big mush instead of giving each other some personal space lol! there is an option in the crowdsolver which i thought would work as essnetially they are all particles but annoyingly they dont... does anyone have any ideas on doing this?
×