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Found 12 results

  1. Hello, I'm a beginner and I'm working on a growing plant using a Lsystem. I made an animation that I exported to alembic for each leaf unfolding, but I don't know how to restart it at each Lsystem generation, so the leaf unfolds from the beginning every time. Only the first one unfolds as I wanted, logically. In the attached files you can see my node trees, the first one for the leaf animation, and the second one for the whole plant. I made a screenshot of how the animation is supposed to look on each leaf and how it currently looks. Thank you in advance for your help!
  2. Hey guys, I would like some advice on modeling some tree roots on a ground with topology. Attached are my reference and attempts to recreate the geometry in Houdini. Reference: Geo: My .hip: terrain_roots_v02.hipnc I'm not quite satisfied with the way the roots go as it's not quite controllable. Also the Creep SOP kind of displaces the end result from the original points, but I don't know how to make the roots follow the topology of the terrain otherwise.
  3. I'm working a procedural pipe generator by growing an Lsystem on the surface of the building. I have no luck in getting the Lsystem to grow or constraint to the building walls properly however, I need the Lsystem to be able to turn 90 degree corners etc to surround the building perimeter. Can someone please help point me in the right direction?
  4. Hi all! I am wanting to use Lsystems to create trees, I find the tool very awesome when it comes to the basics of creating a tree shape. But I am having issues with leaf distribution and honestly the code is going a little over my head on what I need to do to get the leaves scatter more randomly , right now I can get them to group in threes but I would like a more even random distribution. I have looked at both http://paulbourke.net/fractals/lsys/?fbclid=IwAR3nA-wwniepOGQ2GfJOjkOSCq3DyMmrusNVKGy0ARNEAWD4H8Hpp5jbVzk and https://www.sidefx.com/docs/houdini/nodes/sop/lsystem.html?fbclid=IwAR10o-Y0IfwgRVlLXU2j2h8quGYW1niVRxW1LmTReqonNdeYC8Zo6RdrvFk But again the code is just going over my head on how to achieve what I am hoping to create Hopefully this makes sense
  5. Hi! How do I make the global (scene Y) gravity direction for copied l-systems?
  6. Hi! I'm trying to create an animated crack effect using the L-system. What I did was project the L-system mesh onto the surface I wish to crack. What should I do next? Is it possible to do the cracks this way?
  7. Hi, I have generated a bunch of grapes using Houdini's L-system SOP. I instanced the grape geometry using the leaf J input for the L-system, and the grapes sometimes intersect each other. As the model has to be used in a dynamic simulation, these intersections will cause issues in future. Is there any way to fix/prevent these geometry intersections? Attached .hip for reference: grapes_single.hip
  8. I'm trying to create a high resolution procedural tree model (without using SpeedTree etc). I looked into L-systems but thats not much use for a more detailed model that is made of one mesh. This is a really interesting tutorial (and has been posted before) - http://www.andyboyd3d.com/siggraph_talk/img27.html But i'm wondering if theres a procedural way to create the branches (seen here - http://www.andyboyd3d.com/siggraph_talk/img32.html). I'm guessing this part was actually done manually but it would be great to have a procedural method! Cheers, Mike
  9. generations = 2, h = 0.13 Premise: X Rule1: X=F(h)[+F]X Rule2: F(h)=F(h+0.05) Why I get this : F(0.18)[+F(0.05)]F(0)[+F]X Why it is "F(0)"?
  10. development of user interface for the generation of trees LBranch.otl example.hipnc
  11. I am struggling with creating correct shape of a sunflower or a Zinnias. how would i translate this to Houdinis L-System? I replicated all signs from the help, but nothing is shown O_o thanks The real goal would be then to have a Zinnias, but there is no L-System command to it, i would have to derive it from the Shape of the SunFlower I have the screenshots from this book: algorithmicbotany.org/papers/abop/abop.pdf thanks!
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