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About Rence

  • Rank
    Peon

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  • Website URL
    https://www.okalpha.co

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  • Name
    Lawrence Jaeger
  • Location
    Cape Town, South Africa
  1. By looking at the attached image, it does look like it follows the surface normal. I'm assuming the longer the grass gets, the more "vertical". So maybe a blend of the two for a realistic setup. Where the lower part of the grass follows the surface normal and as it gets longer, it begins to grow vertically. Just an idea, not sure if it's completely realistic.
  2. Hi PwPwPower, See attached hip file. That's how I would approach it. lj_vellumToBody.hiplc
  3. Curvature VOP in Shading

    Can't you promote the attribute to points and then do an Attribute Blur?
  4. Curvature VOP in Shading

    Maybe try creating the curvature attribute in SOPS and then bring it into the shader with a Bind node and read in that attribute
  5. I'd have a guess and say that the alembic geo is pretty high res and so when you attach the Configure Cloth, Houdini is having a hard time calculating all the constraints and setting all the attributes and crashes. You'd be better off using a Split SOP, splitting by the groups you created. Then remesh the cloth so that it's not too dense, then append a Configure Cloth and do your sim. Then you can point deform the original high res mesh with that sim mesh.
  6. Generating and moving particles on each primitive

    Grab MOPS and follow this - https://entagma.com/houdini-in-five-minutes-18-sops-redshift-mops-isocontours-setting-up-the-particles/
  7. Creating Custom Shelf Buttons [SOLVED]

    Hey John, Thanks for the code. I have a question, does Houdini echo your actions somewhere? I remember in Softimage, every action I did, the python would echo that action, so it was easy to create scripts as you could grab the code from there. Does Houdini have that kind of functionality?
  8. pscale

    Hi Shantanu, Drop this into the wrangle @pscale = fit01(@nage,chf("start_size"),0); Then clock the little icon under the arrow drop down on the right of code and you can set you start size and the rest will work as you expect. Particles start with the size and then they scale down to 0 at the end of their life
  9. Flip particles get stuck on collision

    Can you upload the hip file?
  10. Measuring distance between two points

    Drop down an attribute wrangle and pipe the first cuboid into the first input and the second cuboid into the second input and type the following into the wrangle: f@dist = distance(@P, @opinput1_P); That will give you a distance attribute on each point distance_between_points.hiplc
  11. Flip sim sliding //SOLVED

    Is it possible to send the abc of the character and the hip file to try problem solve my side?
  12. Redshift IOR Glass issue

    I have found that you actually need to have the inner liquid penetrating the glass. You say the glass is double sided and the liquid inside isn't penetrating. Try use a Peak sop on the liquid and expand it a bit so that it penetrates the inside glass mesh.
  13. Vellum string that does not stretch

    Can you send the hip - would be happy to take a look
  14. On the Point Velocity SOP, you can compute the velocity of the incoming points using various Velocity Approximations, and below that you can tick Compute Acceleration. Does that work in your current situation?
  15. Sorting in order

    That's a handy bit of VEX, thanks!
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