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Found 72 results

  1. i want to scatter points on a deforming mesh (a growing mesh) based on its curvature attribute. currently they are appearing and disappearing as the curvature values are changing (based on the deforming mesh) every frame. however i want them not to disappear once they are created and stick to their original position they were created (as closely as they can). PS: the deforming mesh is generated from a vdb sdf. i am using a triplanar UV on it. i would highly appreciate any tips and help.
  2. Like I was trying to generate some cloud by copy to point with one cloud input. According to the help file, packed geometry will certainly reduced lots of render resources because it will ignore the geo outside of the frame, but when it comes to volume, once I checked Packed Instance, all the volume disappeared in render buffer(redshift), there should be something wrong with copy to point ? Or do I have to manually output density attribute ? BTW, is there effective way to reduce volume noise in redshift? Thx !
  3. Howdy team. I'm new to the forum, so apologies if this is a daft question. I am following a FXPhD tutorial which has an old vers of Houdini and the nodes and parameters are sometimes different. In the exercise I'm doing, the tutor is copying some curves onto a grid mesh to make grass. He manipulates them, copies the curves to attach to the grid mesh with a copy to Geo node, then scatters them across the grid using a scatter Node. There is some scripting to alter the grass length etc. But the grid mesh Geo disappears. We can only see the grass. He gets the Geo to reappear again by checking the preserve Geo tick box in the scatter Node. This box isn't in my vers of Houdini, which is a current one. Does anyone know a fix to this problem? With mesh Geo disappearing when using a copy and scatter node to copy curves to mesh? TIn other words, the curves are grass and the grid mesh is the ground. The ground disappears and I don't know how to get it back. Any help appreciated. I'm a beginner. Thanks.
  4. connecting parameters in python

    Hello, I've been having trouble trying to replicate the "copy parameter/paste relative references" process of referencing parameters from one node to another in python. I understand you can write an expression in the parameter like: evalParm('../box1/tx') but I'd like to be able to do this in the python source editor. This chunk of code copies the translate x from box1 and pastes the value into sphere1's tx, however it doesn't connect the two like the expression above does. boxy = hou.node('/obj/testGeo/box1') ball = hou.node('/obj/testGeo/sphere1') ball.setParms({'tx':boxy.evalParm('tx'), 'ty':0.55}) Essentially I want the parameters to be linked so that if I change box1 tx, sphere1 tx is also changed. Any ideas on what I'm missing to make that connection permanent?
  5. Hey magicians, I'm building a procedural house wich I want some UVs, walls are based on copy to point cubes, I'm having issues to have all the cubes in 1 UV, will post some refs to explain: I tried playing with fuse to merge the boxes, using the autouv on the box before copying, after copying, also tried to make a vdb convert, UVs and transfer back with no luck Any thoughts on how I can get a general UV layout from these boxes? Thanks!
  6. Hi everyone, I'm trying to do something quite simple but i'm struggling with it. I have an imported pile of sticks, i want to take this pile and copy each stick to a different point on a grid, i know how to do this using the method of having each stick have its own geo node and pluging those into a switch and copy stamping them onto a grid, but i want to achieve this result without having each stick be its own node, as there are 214 individuals this would make for a very crowded network. Could anybody help me out? I have attatched my current set up, I am guessing I need to specify in the copy stamp that for each point it needs to select one of the 214 points which are being fed into it, but i'm not sure how to command this expression? Thanks in advance! Dbrs_wood_twig_T_rfkkwaa_LOD0.obj
  7. If i have 5 points all at the origin each with i different pscale, how can i move them apart along the x axis so that when I copy spheres to them the spheres will touch but not intersect? thanks in advance.
  8. Random File to Point

    Hey guys, new user here. I have a folder of objects built and exported from Houdini, and a bunch if random points scattered on a surface. I'd like to copy a different file to each point based on an index attr. I've gotten it to work using packed disk prims but not as full geo. The issue with packed disk prims is I loose all the existing attrs and groups in the files. Perhaps I'm going about this all wrong because it seems like there should be a simple solution. Any help you guys can give would be thrilling!
  9. Hello, Can you please help me a little bit? Lets say I have 8 points. four them are simulated. You can see them in the green circle. And I have another 4 close to them which are static points? You can see them in the red circles. How can I copy the movement of the animated point to the static points? I tried with attribute transfer in a solver node but I'm sure I made something wrong because it didn't work. Thank you Gabor
  10. Hello, i have an issue with the copy stamp, I created a Point wrangle where I choose randomly pieces from black or red color in a loop (its a building), so i created a variable with a random in my copy stamp and i want to paste it in a seed I created in the point wrangle, in order to copy different seed of my object on point, it doesn't work at all, it's always the same copy of the same seed... Thank for any advice, cheers
  11. Hey! I'm looking into a way of doing this sort of abstract models, and I'm copy/stamping cubes on a grid, driving colors from a map and the height of the cubes (from another map + noise) is piped into a copy stamp, it works fine but I find it very slow when the number of copies rises too much, it takes roughly one minute to copy/stamp 1 million cubes. I noticed is not multi threaded so I wonder if there's a smarter/faster/better way of approaching this cheers!
  12. Cut Copies

    Hello all, I'm attempting to make an effect like this and am getting stumped if anyone had any ideas on how to approach it would be super helpful! Thanks.
  13. Hey all, Trying to wrap my head around this... thought it was going to be easy until I got into it. I'm tying to randomize each level in a copy transform in my setup. I get close but I end up randomizing all prims instead of each level. I attached the hipfile. jl_iterLevel_01.hip Please Help, Thanks!
  14. Hi everyone. I have flower with of which I have isolated the stem and ran it through a simulation. I now want to reattach the head of the flower back to the stem but I obviously want the heads orientation to match with the new simulated stem. I have tried point deform but cannot get it to work. Although it does seems to be close its not matching up. attached is a hip with an isolated simple example of what I am trying to do. Any help is greatly appreciated. Thanks Attach_Flowerhead.hiplc
  15. Is there a way to iterate over an attribute and copy specific geometry per matching value? Currently I'm isolating the points with the same value and the meshes with the same value, then copying to points. I want to automate that part. Say I'm copying over points and each point has 1 value per MaxHandle out of 6 possible. Then I have 6 meshes with said MaxHandle values in another node. I want to copy the meshes with the same MaxHandle to the point with the same value.
  16. Distribute by size

    Hello, I've got 3 boxes first is 15x20, second 20x20, and third 30x30. I want to distribute them in one direction in right orded but also to have even spaces between them. Anybody ecnountered similiar problem?
  17. Hello everyone ! I can't figure out how to copy the attribute pscale (from a wrangle) onto a sphere... I am sure I am missing something because it should be straightforward see attached figure Thanks and sorry for the low level question
  18. Copy to Points - Foreach

    Hey! I was wondering how to copy Geo to points using the Foreach Loop block, but without using a switch. Instead I am trying to use groups to switch between the input Geo. Unfortunately I was not successful yet. Maybe anybody has an idea what I am doing wrong here? Best, M CopyLoop_01.hip
  19. Hi, I have a question about copying velocity's to a flip simulation. I want to create a specific shape in the motion of the fluid. The only way I can get close to that at the moment is to source(copy) a generated velocity into the flip sim. That's because when I add the velocity, it overshoots too fast and I can't get that specific shape out of it. The only thing with copying the velocity, is that it copy's the velocities with a value of 0 as well, so the flip is completely at rest. I was thinking that this could be fixed with a mask field, but it doesn't seems to work as I expected. Is there anybody out there who can tell me what i'm doing wrong? Or other suggestions to get that result would be welcome as well! Actually, any help/advice would be appreciated! pumpVelToFlip.hip
  20. Hey magicians, I have 3 alembics with time offset for randomness wich I'm copy stamping with a switch node. Is working good except after some frames I get a weird "jump" on the clone position, any thoughts? Thanks!
  21. 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
  22. Copy Node

    Hi, I have a growing geometry, (via finding "neighbours" creating goup and than blast the geometry) and I want to copy/stamp objects to points of this growing mesh... But as it is growing the point numbers changing so the stamped scale/ rotation etc... is changing also... Any Idea for some solution or workaround? Thanks BK.
  23. Hello Hive Mind, Long time reader, first time poster.... I was wondering if anyone knows a pythonic way of creating a reference copy of a node? More or less the equivalent of hscript opcp -c. It's a little more complicated than a copy and iterate over parms, since certain parm types need different copy/reference methods. Thanks in advance!
  24. hello guys. I am new Houdini user. I got a question about copy to point. I can't find out a way to get each sphere scale from 0-1 when every time it generated in this case. I need some help to know about the concept to make it happen please. thanks. here is the file link: copy to point file
  25. Copy to points multiple geometry

    I have a points. And i have for example 3 object - sphere, cube and cylinder. And i want to copy this objects to points with random. CopyStamp and CopyToPoints have only one input for geometry. How to copy more then one object to points? I want to see random object in points. For example i have procedural animation of point and want to connect 5 car models to create traffic flow on road....
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