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About ela1995

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  • Name
    Doanh Luong-Ho
  • Location
    San Francisco
  1. We can group point in bounding box with group nodes. But how do I do it with vex? select pt in bbox vex.hip
  2. I have colored gradient for each extruded primitive using For Each Loop. How do I do the same thing with vex? I'm not familiar with prim array. Can anyone help me? Thanks in advance. how to foreach prim with vex.hip
  3. how do I rotate the box in scene random between -45 and 45 degree? I mean it's either -45 or 45, no any random degree in between. certain rotate degree.hip
  4. scaling rbd object stop at certain frame

    where should I clamp the value? In SOP Solver where I use Primitive SOP to make it bigger ovettime?
  5. Hi, I have rbd object emit from DOP particle, and I scale each rbd over time by @age. But I want them to stop scale at a certain amount because I feel like they are big enough. How do I make them stop at the red marker size? Thanks in advance, Candy_FireWork.hip
  6. different rotating speed overtime

    thank you. I didn't know abt that tool
  7. firework explode rbd multisolver

    I rebuild the firework system base on firework workflow in Houdini 18 so I can have better control in several parameter. But how do I turn those sphere into rbd object and have them collide each other in a box. I watched the multisolver online from this guy ( ) but I can't figure out how to combine them. Can anyone help me please. Thanks in advance, firework box 2.hip
  8. Hi, I have a simple pop Network simulating the particles. As I copy the box to particles, I want them to rotate overtime. But when I manipulate the rotate in Transform SOP, they move in the same pattern. How do I make each box rotate at different axis on their own, and with different speed? Thanks in advance. different rotation.hip
  9. I learn how to find the center point on internet, but seem like it doesn't apply in this situation. How do I find the exact center point for these primitive? center point for custom primitive.hip random primitive.obj
  10. How do I make the geo not overlapping each other no matter how I scale it up? overlap.hip
  11. I have 3 different geometry I want to copy onto grid's point, I use Copy Stamp with this function: fit01(rand($PT),0,1). I also write the expression on switch VOP like this: stamp('../copy1', random,0). Now I can control the variety as well as the randomness by adding values into expression above. But later I need to put all the controls into a controller so the third person can control it easily. Is there a way to make those expression has a slider control so that I don't have to go back to the node to change the number. I would like to make it have a slider like writing chf('offset'). how to make slider ctrl for expression.hip
  12. wires

    thank you so much
  13. I have grid planes attached randomly on 'grid1'. I scattered points on the smaller grid planes but it's not the result I want. As you can see in the image, the scattered points is not distributed on every grid plane. For each grid plane I have, I want to scattered same amount of point (at least 1 point), and the point will be randomly place. How do I fix it? scattered point on grid plane.hip
  14. I create new points on a geometry with vex primitive: addpoint(0, @P); how do I group all the points I just created? I don't want to go through long version of group combine.
  15. wires

    I have 2 opposite surface, I scattered points on surface. Now I want to connect wire of points, as I use Add, there are line overlapping in Z direction. I only want to connect crossing each other. How I fix this? wireProblem.hip