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The Ultimate Houdini DOPs – Gas Microsolvers & Custom Forces by Anas Alaa
Master Houdini's simulation system by building custom solvers, procedural forces, and SOP-based controls from scratch.
Ready to ditch the shelf tools and truly command Houdini’s simulation power? This course is your ticket to building everything from scratch. You’ll learn to craft your own custom solvers, design procedural forces that breathe life into smoke, particles, and fluids, and even use SOPs to steer complex FX like snow and lava. Forget shortcuts; this is about building robust, procedural dynamic FX systems from the ground up.
🎯 What you’ll learn
Build custom gas microsolvers for smoke simulations.
Create procedural forces for any simulation type.
Control simulations using custom SOP logic.
Design and debug professional, procedural FX systems.
Build reusable HDAs for production pipelines.
Render and showcase high-end simulation work.
✅ Requirements
Skills: Familiarity with Houdini’s interface and basic DOP networks.
Tools: Houdini.
Hardware: A capable workstation for running complex simulations.
📝 Description
This course is all about getting hands-on with Houdini’s DOP framework. We’re not just showing you how to use existing tools; we’re teaching you to build them. You’ll dive into the nitty-gritty of gas microsolvers to create your own custom solvers for smoke, and then move on to designing procedural forces that can influence particles, smoke, and FLIP fluids. The course also covers SOP Solvers, showing you how to leverage SOP geometry data to drive and control simulations, opening doors for effects like melting lava or detailed snow. It’s a deep dive into procedural workflows, emphasizing control and understanding over quick fixes.
🧑🎓 Who this course is for
FX Artists looking to go beyond shelf tools and gain complete control over their smoke, FLIP, and particle simulations.
Technical Directors & Pipeline Developers who need to build scalable, reusable FX setups and understand the core mechanics of DOPs.
Intermediate to Advanced Houdini Users ready to transition from basic DOP networks to building complex procedural systems from scratch.
Game & Cinematic VFX Artists who require precise control over simulations for both stylized and realistic effects.
🧑🏫 About the Author
Anas Alaa is a freelance Visual Effects Artist with a passion for Houdini simulations. Since 2014, he’s specialized in creating stunning visual effects, particularly large-scale water simulations that have gained attention on platforms like CGRecord. Anas also shares his knowledge as an instructor at MIX training. While water simulations are a focus, his expertise spans fire, explosions, destruction, and particles. With a strong background in mathematics, he enjoys dissecting the complex math behind fluid dynamics and solvers, which fuels his drive to create in-depth courses that demystify these intricate topics.
🏁 Final Result
By the end of this course, you’ll have a portfolio of advanced, custom-built simulation systems, including unique gas microsolvers, procedural forces, and SOP-driven effects, ready to be showcased in your demo reel or integrated into production pipelines.
Curriculum
📋 Course content
Chapter 1: Introduction & Smoke Solver Anatomy
Introduction to vector math and volume fundamentals
Understanding volumes inside Houdini
Theoretical background of smoke solvers
Building a basic smoke solver
Exploring projection meaning
Working with timesteps and timescale for simulation stability
Chapter 2: All About Noise in Houdini
Vector operations essential to force design
Goals and application of procedural noise
Theory of noise frequency, amplitude, and layering
Practical implementation of noise fields inside Houdini
Chapter 3: Gas Shred from Scratch
Theoretical foundation of gas shredding
Creating custom shred forces using gas microsolvers
Building control fields and parameters
Designing visualization tools for force fields
Chapter 4: Gas Turbulence from Scratch
Constructing a procedural turbulence force from scratch
Adding 4D time-based controls and layering options
Implementing adjustable control parameters
Visualizing and debugging turbulence behavior
Chapter 5: Gas Vortex Confinement from Scratch
Theoretical background of vortex confinement
Building a full vortex confinement solver from zero
Adding controls to the tool
Chapter 6: Gas Disturb from Scratch
Exploring the logic of gas disturb forces
Creating disturb vector fields with randomness
Applying disturb vectors using interpolation and angular rotation
Developing custom controls: amplitude, octaves, and blending logic
Tuning and exploring different disturb parameters
Chapter 7: Custom Masking & Detailing for Smoke
Theory behind our way of custom detailing
Building a gas field VOP for procedural detailing
Creating digital assets (HDAs) for reusable masking and detailing
Embedding custom masks into simulation workflows
Finalizing and testing on a smoke solver (sparse)
Chapter 8: Custom Vortex Forces for FLIP Simulations
Initializing custom FLIP vortex sim
Designing spinning vortex vectors
Modifying velocity fields for fluid interaction
Adding artistic control and banding visual effects
Chapter 9: Curve-Based Forces
Theoretical background of curve force systems
Generating force vectors along curve paths
Creating custom control interfaces
Applying curve forces to smoke and particles
Chapter 10: Geometry-Based Forces
Using complex geometry to drive force fields
POP Advection techniques using volumes
Creating advanced FX like particle-to-word transitions
Procedural control over movement and timing
Chapter 11: Axis-Based Forces
Theory of spherical and directional axis forces
Building a sphere axis force system
Applying our force as velocity blend, directional drag and full drag
Creating torus axis forces with control over rotation and strength
Finalizing an axial force asset for reuse
Chapter 12: SOP Data & SOP Solvers in DOPs
Using SOP data inside DOP networks
Theoretical background of SOP-based simulation manipulation
Creating snow simulations using SOP-driven gas forces
Building lava-melting effects with geometry-based SOP logic
Detailing water simulations with high-resolution SOP inputs
Procedural control using SOP-DOP hybrid workflows
Chapter 13: BONUS – FLIP Secondary Elements & Rendering
Rendering high-quality water vortex simulations
Adding secondary elements to FLIP setups
Creating ocean waver
Tips on lighting, shading, and presentation
Final look polish for cinematic FX shots
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The Ultimate Houdini DOPs – Gas Microsolvers & Custom Forces by Anas Alaa
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