All posts filed under “Free Tutorials”

Mograph Liquids: Controlling FLIP Fluids Via Curve Forces

Been going through a few of Jeff Wagner’s feature presentations from a the last few Houdini releases and stumbled upon a gem which I thought I’d base a setup on: Controlling FLIP fluids using a curve. Throw in a tiny bit of VDB/VEX magic and […]

Guest Tutorial: Simon Fiedler – Controlling Swirly Particles

It finally happened – our dear friend Simon Fiedler agreed to record a guest tutorial for us. He decided to share one of his production tricks for controlling particles: Building a swirly vector field to advect particles. Although it looks organic and natural, it’s highly […]

Morphing Point Portraits

You just want to distract yourself on twitter and you stumble upon this tweet by Daniel Piker. Naturally we had to give it a go in Houdini. And it turns out it can be done with surprisingly few nodes and without any sort of scripting… […]

Keycap Sculptures (Disco Ball Tiling)

When we received an E-Mail by Eduard, asking if we had any idea about disco ball packing, we were intrigued. Eduard pointed out that his (apparently very patient) wife manually tiled this sculpture and was wondering if there’s any way to automate it. He also […]

Bubbles Yet Again: Implementing Glassner’s Bubble Triplets in VEX

Bubbles. Again. How thrilling. Wait – before you leave hear me out: Building this setup was one major step for me towards becoming brave enough to tackle implementing my first computer graphics paper. Andrew Glassner wrote a fantastic article about how soap bubble triplets form […]

Holiday Giveaway: Mantra Thinfilm Shader

Happy Holidays! Turns out rendering spherical objects has become our very own tradition by now, so as an addon to Monday’s tut and the question “But can u do it in Mantra?” – Here’s a small present hastily thrown together by yours truly: A VEX […]

Bubbles Again: Simulating Soap Swirls Using FLIP

By now it might have become apparent that Mo might be a bit fixated with soap bubbles and soap films. We covered Minimal Surfaces, soap film shading in Octane and in Redshift. Yet we deliberately omitted one crucial step in rendering nice soap bubbles: Creating […]

Sloppy Unreal 03: Correcting Mistakes & Bevelling Legos

EDIT: Damn it, I think specular in UE and me are cursed. When I was testing this setup I had post processing exposure cranked up, which messed up my results. Turns out that specular expects a value between 0 and 1 which internally is remapped […]

Sloppy Unreal 01: Camera Controls Using Blueprints

Mo has been silent for a while. That’s due to him spending his days finishing projects and yelling at Unreal Engine. The goal is getting to a point where we’re comfortable bringing together Houdini workflows and UE. That road is long. To discover Unreal, the […]

Creating Procedural Welding Seams In Houdini

Been watching This Old Tony, Wintergatan and Stuff Made Here a lot in quarantine. And while the idea of having your own home shop and being able to weld is quite romantic, our reality is that neither do we posses the space nor the skills […]

New In Houdini 18.5 – KineFX

Full Playlist Here Revisiting an old technique Manu covered a while ago. But this time using H18.5’s new KineFX tools to make it a tiny bit less painful. Nevertheless Mo of course dives into VEX and a bit of linear algebra. Links Manu’s previous tut […]

New In Houdini 18.5

Full Playlist Here Houdini 18.5 is out! And here are the features that got us excited! Of course there’s much more. (SOP based rigging anyone?!) We had great joy in seeing that Karma has come a long way and that real time pyro sims in […]

Workshop: Unreal Engine Quickstart

Full playlist here. Super hyped to have Matthias Winckelmann on board! You might know him from “Rachael is not real” where he built an AI design influencer bot that posts daily renderings to instagram. Matthias has been using Unreal Engine in his personal design process […]

Exporting Alembics For Blender: A Few Hacks

EDIT: Thanks so much for the many comments & hints! Josh Rizzo on Twitter pointed out I’m missing a few import options when loading in the alembic. Here’s how to import animated attributes without a deforming/animated mesh:– Import Alembic– Check “Set Frame Range” and “Is Sequence” […]

Guest Tutorial: Path Solver

We’re thrilled to have Houdini artist supreme Vladyslav Lavrenov for a guest tutorial. And quite a hefty one! Vlad takes us through his reasoning and steps to build a path solver in Houdini to have seemingly random momevements on a grid form a coherent behaviour. […]

Silly Pillow Pt. 2: Adding Detail & Tweaking Stitches

In part two of our silly pillow series, Mo adds detailed wrinkles by tweaking our Vellum sim’s constraint parameters. This makes our pillow look more like something out of a Franquin comic. Also you’ll be exposed to two lines of VEX script. You’ve been warned. […]

Silly Pillow Pt. 1: Setting Up Stitches In Vellum

Mo needed something relaxing after a longer stretch of math, algorithms and OpenCL. So we decided to build something quick, rewarding and fun: A weird inflatable structure in Vellum. Download Project File

Houdini On Mushrooms Pt. 1 – Softbody Shrooms

This is the start of a new mini-series on fundamental Houdini techniques. Demonstrated using mushrooms. Of course. We’re starting off by setting up a softbody simulation in Vellum and then using Houdini’s point deform node to transfer the low resolution simulation results onto high res […]

Guest Tutorial: Looping Flower Petals

We’re thrilled to have Houdini artist extraordinaire and educator Chris Kopic for a guest tutorial. Chris agreed to shed some light onto how he created this endless looping flower. Using vellum and a bit of houdini trickery. Download Project File

Guest Tutorial: Meshing Small Scale Flip Sims

Our friend Alvaro Moreira put quite a lot of work in optimizing small scale fluid meshes over the last couple of months. Today he wants to share his findings with the Entagma community. Watch him smooth a fluid’s surface while maintaining sharp creases between the […]

The Houdini Donut Tutorial!

EDIT: Simon Fiedler just informed me that in fact we’re not the first ones to do a Houdini Donut tut. Dang! Kudos to Konstantin Magnus! — Mo has recently started learning Blender. (Don’t worry – we won’t ditch Houdini. We just think Blender makes for […]

Procedurally Modeling A Raspberry

Mo has recently started learning Blender. (Don’t worry – we won’t ditch Houdini. We just think Blender makes for a nice addition to our toolkit.) And while watching a certain popular donut tutorial, it became painfully obvious that sometimes procedural modeling is king. As is […]

Essential TD Skills: Designing & Implementing Algorithms

A popular misconception we often encounter when answering questions, is the notion that in order to simulate an effect A that looks somewhat similar to another algorithm we built to simulate effect B, all you need to do is tweak a few parameters. While true […]

Quicktip: Fluid Splashes Using FLIP

After we went over shading, lighting and rendering refractive materials in our latest video in Rendering 101, you wanted to know how the liquid splash we used had been created. Look no further – in this tutorial Mo walks you through all the necessary settings […]

A Bit Of VEX : Easy Caustics Generator

Last week we’ve been visited by our good friend Fritz “Frizz the Whizz” Kemmler – a most talented developer. And while pondering some other algorithms, we needed a bit of distraction. So we ended up throwing together this one: A very straightforward and not so […]

Papers Please – Graph Bundling Pt. 2: Building The Setup

Watch pt. 2 here. In part two of our tutorial on Kernel Density Estimation Graph Bundlig we’re implementing the setup and adapt it to create smooth animations. EDIT: It’s been brought to our attention that there is another neat graph bundling technique based off of […]

Papers Please – Graph Bundling Pt. 1: Theory

Watch pt. 1 here. Let’s spread a bit of joy and dive into VEX and Houdini-SOPs again to implement a really neat technique from a french/dutch paper covering graph bundling. While graph bundling is usually found in network analysis or geovisualization, we’re gonna adapt the […]

Houdini In Five Minutes 20: That’s All Folks!

That’s it for the first sprint of “Houdini in five minutes”. We’ll probably publish additional five minute tutorials in the future but for now it’s back to our default schedule: Bi-Weekly Free tut and premium courses on Patreon. Free Resources (Apart from Entagma): Matt Estela’s […]

Houdini In Five Minutes 15: Packed Primitives (Theory)

Let’s dive into our last bunch of videos in this first sprint of “Houdini in five minutes” with a seemingly dry topics: Packed Primitives / Instances. Although slightly technical, it’s a powerful concept that enables Houdini to work on massive scenes.

Houdini In Five Minutes 14: Rendering Grains In Redshift

After we’re done setting up our simulation, let’s render it! This time using Redshift, one of our favorite engines when it comes to working and rendering in Houdini. Yes it doesn’t come with Houdini. Yes it’s a third party addon. Yes it costs money. However […]

Houdini In Five Minutes 13: Setting Up Grains

With version 17, Houdini introduced a new simulation framework called vellum. It is based on position based dynamics and thus offers a relatively fast way to simulate a multitude of effects. In our case we’re gonna use it to set up a bunch of grains […]

Houdini In Five Minutes 12: Setting Up Particles

Houdini isn’t just a great tool for procedural geometry creation – it’s also the single most powerful particle system we’ve seen to this day. Plus: The particles are deeply integrated into Houdini’s functionality, so you can combine them with virtually any tool Houdini has to […]

Houdini In Five Minutes 11: The Foreach Loop

Ever wanted to take your meshes apart and work on their individual polygons? No? Doesn’t matter – here’s the foreach loop which allows you to do exactly that! Download Project File