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In this video, I’ll show you how to create a custom wind force for the Pyro Solver using a microsolver.

This force is not limited to wind; you can also use it to create drag or other types of effects. The force can be driven by fields such as density or temperature, not just velocity.


In this video, you’ll learn how to:


  • Writing custom VEX code
  • Controlling density in simulations
  • Custom forces, not just wind


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CREATED BY

MatEvil
MATTEO MIGLIORINI

I’m Matteo Migliorini (but for non-Italians, you can call me "Mat"), an FX Artist with a strong background as a 3D Generalist, based in Italy and experienced in both on-site and remote workflows. Over the past 10+ years, I’ve contributed to commercials, TV shows, feature films, and corporate videos, working with studios like Union Visual Effects (BAFTA winner), MARZ, JellyFish Pictures, Lola-Post, and more (check my IMDB or my website). I specialize in FX creation, R&D, look development, setups, tools, templates, and HDA creation, guiding teams from concept to final shot. I also mentor teammates, fostering collaboration and efficiency across projects. Versatile in roles ranging from CG Generalist, FX/TD, and CFX to Supervisor and Producer, I combine technical expertise with creative vision, ensuring high-quality results while pushing workflows forward. Passionate about learning and sharing knowledge, I continuously explore new techniques and create educational material for the VFX community.

More from Matteo Migliorini

COMMENTS

  • luispena.vfx 1 month ago  | 

    Hi!, I have a question...
    I'm beginner in Houdini so I don't quite understand the difference or why apply this technic instead of assign a wind force in the velocity field or in the solver??
    It's not the same result?

    Thanks for your time

    • MatEvil 1 month ago  | 

      It's a good question Luis.

      Quick answer: You don't have a VEX Control on it.

      Long answer: Inside the solver (Pyro Solver Sparse), you have a tab of "Shape" and inside you can find a "Wind" tab, but you can control only the wind direction. If you create a Microsolver or force (Gas Wind and Wind Force) you can see missing totally the part for control the behaviors of your wind with the VEX so you can't managment or drive by temperature or density (for field) or based on the position (for example you can't say "if smoke is up @P.y>2 moved in another direction). You can get more control.

      Let me know if all is clear now.

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