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Showing results for tags 'rdb'.
Found 11 results
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Hey ODForcers, I have this shot I'm doing for my reel. As you can see a bullet is going through a fish tank. I have multiple other issues with the current state of it, but here I just want to ask how anyone would make it so the glass breaks at the point of impact and then spreads around the tank over a few frames? I tried initially using a sphere that was animated moving through the tank from the left and having the two meshes (whole and fractured tank) booleaned then remerged. This would work except you get the seam of the sphere rendered as cracks which looks wrong. tank_forSUPASLOMO_048-karma1.mp4 Thanks 5D PS: I haven't attached the .hip as I didn't think it's nessecary for the discussion, please let me know if I need to.
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Hi everyone, I have wich is seams like a simple request but i can't wrap my mind arround it. I'm a beginner in houdini since a few months but I really dig the process of R&D, I like to start from some tutorials and try to have fun from there. I think I know the way to do it and it must be easy but I have no idea where to found what I'm looking for or what should I tweak. I have two project in mind I would love to do but I keep having the same issue. Is it possible that a RDB object and a vellum solver affect each other ? Like collide and deforme the solver and not just bounce on the vellum or something like that. For the first one I made like a rubber toy, I wanted it to bounce a little and the ground and then be stomp by a rock falling on him. I succeed making a simulation that I like for the rubber toy but when I try to add the rock falling I can't. Maybe because it's really heavy I can fake it by simulating the rock falling and then importing it as an .abc or something and make it collide with the vellum solver but even that I didn't found how to do it. The second one is with the same problematics but maybe even harder. I wanted to simulate custom sticky man. So like in real life I made a sticky skeleton and two hard parts, upper and lower body. I followed this tutorial but because I can't mix RBD and vellum I am stuck again. As the first one, I may be able to fake it by doing the characters in one only piece but only make the hands, feets and middle of the body soft and sticky. Maybe with a paint mask ? So if anybody have good tips on how to learn this, have unknown tutorials or have an idea how to do it, it will be much appreciated. Thanks in advance for taking the time to read this and sorry if's too basic and doesn't belong here. I added my files if somenone want to have a look. 160921_SQUEAK_RBD.hipnc & GYMBODIES.hipnc Maybe you'll need the obj I have (last question, is there a way to pack it all inside the hipnc file ? ) 160921_HERISSON_LOW_LOW.mtl + ROCK_1.obj and BODY_GUM.obj + BODY_RIGID.obj Cheers and have a great evening ! PJ
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Hi All, I'm playing around with H18.5 - I made a little sim using the rbdbulletsolver SOP but when I plug that into a ROP/RBD_to_FBX I get an "invalid node name" error and no FBX is produced. Python error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "labs::Driver/rbd_to_fbx::2.0, PythonModule", line 28, in export File "labs::Driver/rbd_to_fbx::2.0, PythonModule", line 75, in export File "labs::Driver/rbd_to_fbx::2.0, PythonModule", line 203, in build_individual_nodes File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/python2.7libs\houpythonportion\ui.py", line 1010, in decorator return func(*args, **kwargs) File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/python2.7libs\hou.py", line 13126, in createNode return _hou.Node_createNode(self, node_type_name, node_name, run_init_scripts, load_contents, exact_type_name, force_valid_node_name) OperationFailed: The attempted operation failed. Invalid node name Not sure what the deal is - could it be the RBD SOP node? Am I sending the wrong data into the ROP?
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Hi all, I am using pop forces to effect my sim and I am confused. I need sop solver to break glues, the pop force doesn't break glues, is that right? And I am using sop solver to decide where to delete constraints so that pop force effects these released pieces. Am I correct ? Best regards.
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hey guys i am having a little bit of an issue with this test. i picked up this setup from another thread on this forum however in this particular scenario it doesn't seem to work as i am probably missing something. basically the pieces getting activated and falling, do not collide with the inner shrunk body volume i created and - since i am a houdini newbie - i am struggling to figure this out tried to change geometry representation to concave, tried to increase resolution of colliders, but nothing worked so far. i'd be really grateful if anyone could suggest a possible solution. here's HIP and assets in case you want to have a look. https://www.dropbox.com/s/eush4f5hus2uhwy/fracturing%20animated.zip?dl=0 thank you in advance.
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hello. I want to break the logo while rotating. but I don't know how use my custom velosity in RBD. Let me know if you know of any better way. Thanks. logo_01.hip
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Hey guys, little question about RBDs interacting with fast moving colliders here. So Lets sayI got rocks rolling down a mountain and the mountain shape start to fold/move rapidly. In this case the rocks stop roling and get pressed to the collision geometry - due to the speed of that collider. Any ideas or quick setups on how to counteractthis and get the stones roling again?
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Hi Guys, I've been trying to create an rdb sim with boolean pieces where a dancing figure shatters and falls apart onto the floor. When pieces are activated I set deforming to zero. However, the pieces keep exploding off. I've made the shattered figure deforming with a "Deform Points" sop. This already seems to reshape the figure in a way that creates some artefacts. Perhaps this creates the intersecting geometry? I'm not sure. This doesn't seem to happen when I shatter with Voronoi. I'm not a fan of those pieces however. If it wasn't a deforming figure I'd probably next try to create some proxies with spheres and transform afterwards, but I don't see how I'd do that here.I tried to simply cut down the collision padding and shrink the pieces a bit, but still they explode. Could anyone give a piece of advice to make this work? Thank you! (Figure and animation have been supplied by the amazing Johnny Farmfield) fallapart_1.hipnc breakDancer_mocap_v03.abc
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Hi, I have a question about setting up collisions on a static object. My goal is to have a character walking through snow. I have a grain simulation and then an alembic of a character walking. I have my grain simulation setup, now I need to make my character a static object so it collides with the grain pop simulation. I then made my character walking alembic a static object. Now here is my question: I need to edit the collision boundary of my character walking, but how do I know which solver is being used? Bullet, ODE, or RBD? To sum it up, I have a static object being used as a collision for a pop simulation. How do I know what simulation engine is being used to calculate collisions? Bullet, ODE, or RBD? Thanks in advance
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Hello, I'm trying to convert a bunch of RBD objects in my case a bunch of cubes of a dancing person that has shattered to the ground into particles. I've tried using a for loop SOP and using a fuse node to get a single point and then using a copy SOP but the rotation is off and isn't identical. My plan is to the have the dancer reform using POPs afterwards. While i'm at it I might as well. My dancer is converted into points with a volume to points SOP but as it;s deforming the points are recreated each frame. My solution and its a pretty shit one was to use a point deform of the point converted dancer and apply the deformation there. Problem is obviously that the cubes no longer stay apart and depending on how radical the dancer is the more the cubes intersect. Is there anyway I can still keep them apart but not create new points for each frame so that when they are converted to RBD they don;t flip out?
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Attach RDB Hinge constraint to animated object
lloydwood posted a topic in General Houdini Questions
I thought this would be relatively easy but I've spent all day trying to figure it out and failed. I have a cable that I need to swing under an animated object. The cable is attached at both ends so it is the loop that is swinging. I tried this with a wire solver and it worked fine. The problem is that the cable is supposed to be almost solid in it's rigidity and no matter how high I turned up the stretch and bend values I couldn't achieve this with the wire solver. The cable only needs to swing from side to side so I thought an RDB object with a hinge constraint might do the job instead but as I quickly found you can't attach a hinge constraint to a moving object. Is there a way to do this?
