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Primordial Particle System in SideFX Houdini
It's been a fairly busy few months at my "proper" job, so my recreational Houdini tinkering has taken a bit of a back seat. However, when I saw my Swarm Chemistry hero, Hiroki Sayama tweeting a link to...
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"Sparse Vermiform" Rendering of Fluids with Pressure Based Color
This blog post discusses a technique for rendering SideFX Houdini FLIP fluids as sparse fields of wormlike particles (hence my slightly over-the-top Sparse Vermiform moniker) with their color based on...
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Particle Advection by Gray Scott Reaction Diffusion Revisited
This post continues from my recent blog entry, Particle Advection by Reaction Diffusion in SideFX Houdini. In this project, I've done away with the VEX in the DOP network, and replaced it with a VDB...
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Particle Advection by Reaction Diffusion in SideFX Houdini
After watching this excellent tutorial that discusses advecting particles by magnetic fields to create an animation of the sun, I was inspired to use the same technique to advect particles by fields...
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Revisiting Mitosis in SideFX Houdini
I played with animating mitosis in Houdini last year (see Simulating Mitosis in Houdini), but the math wasn't quite right, so I thought I'd revisit my VEX to see if it could be improved. After some...
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Faux Grain / Fluid Interaction in Houdini
This post describes a simple way to create a system comprising of a regularly surfaced fluid and a faux grain system. The video above contains three clips using the same basic technique: creating a...
View ArticleParametric Fibonacci Spheres in Houdini
Fibonacci spheres are created from a point set that follows a spiral path to form a sphere (you can see an example, with code at OpenProcessing).For the video above, I used the approach described in...
View ArticleHoudini Grain Solver with Custom VEX Forces
This video contains five clips using SideFX Houdini's Grain Solver with an attached POP Wrangle that uses VEX to generate custom forces. Here's a quick rundown of the VEX I used for each clip (please...
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Animating Rayleigh-Taylor Instability in SideFX Houdini
The Rayleigh-Taylor instability is the instability between two fluids of different densities. It can appear as "fingers" of a denser liquid dropping into a less dense liquid or as a mushroom cloud in...
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Faking Toroidal Eddies in Side FX Houdini
Following on from my recent blog post, Mixing Fluids in Houdini, I wanted to simulate a toroidal eddy effect where the incoming drip takes the form of a torus and the fluid flows around the...
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Mixing Fluids in Houdini
I suspect that mixing two or more disparate fluids is one of the first challenges Houdini newbies, like myself, set themselves. I blogged about an approach recently in Stripy Viscous Fluid Impacts in...
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Animating Gravitational Tides with Houdini FLIP Fluids
This video contains three treatments of a gravitational tides project using Houdini FLIP fluids.The project uses two radial gravity POP Wrangle nodes using identical VEX (which I discussed in my last...
View ArticleHoudini FLIP Fluid & Radial Gravity
Here's an animation of a rocky planetoid with a liquid core that ejects a stream of water in an aquatic volcano. The planetoid's gravity pulls the water back which settles into streams and pools.The...
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Reaction Diffusion in SideFX Houdini
This may sound a tad geeky, but reaction diffusion is one of my favorite things. I've been tinkering with different implementations for four years - almost to the day - so, it felt like high-time to...
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Animating Planet Engulfment in Houdini
Here's a nice-ish looking and easy to set up project that animates a hapless planet caught in the gravitational field of a small dense star. As the planet approaches, it begins to melt and gets sucked...
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Simulating Accretion with Houdini's Grains Solver
When I started thinking about using SideFX Houdini to simulate accretion, I was expecting to have my VEX skills (or lack of) pushed to their limits. However, after looking at Houdini's grains solver, I...
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Chaotic Magnetic Pendulum with Custom Radial Forces in Houdini
Following on from my recent post about creating a double pendulum in SideFX Houdini, here's another project that roughly simulates the effect of a magnetic pendulum and visualizes the resulting...
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More Chaos in Houdini: Simulating a Double Pendulum
I looked at creating strange attractors in Houdini recently and there's a more elegant solution over at Entagma. This post looks at an alternative way of modeling an attractor using SideFX Houdini with...
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Creating a Geometric Structure from Mitosis
This post expands upon my previous post, Simulating Mitosis in Houdini. After watching Creating Points, Vertices & Primitives using Vex by Fifty50, I wondered what sort of structure my mitosis...
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Simulating Mitosis in Houdini
Here's a quick and easy way to create a procedural simulation of cell mitosis that, in my opinion, looks pretty impressive. The simulation is based on a point cloud which is wrangled inside a solver....
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