The following people helped develop Houdini

Aaron Severn, Abhishek Madan, Adam Jeziak, Aditya Raghavan, Adrian Saldanha, Adriano Bertucci, Ahmed Hassan, Aimee Johnson, Alex Gurevich, Alex Lee, Alex Orgill, Alex Shelkovnykov, Alex Wai, Alexander Shah, Alina Ivchenko, Amit Dubey, Amy Csiki, Ana Lee, Anatole Le, Andrew Alzner, Andrew Clinton, Andrew Rae, Andrew Wong, Andriy Mnih, Angel Alladina, Arash Tirgari, Arjun Nair, Asim Raza, Aurora Huang, Barbara Macdonald, Bardia Sadri, Berj Bannayan, Bob Wei, Brandon Allen, Brendan Van Ryn, Brian Cort, Brian Sharpe, Calin Casian, Calvin Gu, Cameron White, Carol Wang, Cathy Penner, Charlie Wang, Chris AtLee, Chris McSpurren, Chris Thompson, Christopher Grebeldinger, Christopher Janowksi, Christopher Knappers, Christopher Speller, Christopher Walker, Clement Yip, Coen Klosters, Craig Zerouni, Crawford Doran, Cristin Barghiel, Dale Ducharme, Damian Campeanu, Damien Pernuit, Daniel Hau, Daniel Lemmond, Daniel McCormick, Daniel Yaroslavski, Daniel Zhang, David Pritchard, David Robert, David Wong, Debbie Tam, Denise Eng, Derrick Moser, Dian Xiang, Diana Huang, Dmytro Shynekvych, Edward Lam, Egor Larionov, Eran Guendelman, Eric Lawless, Erick Dransch, Erwin Heyms, Filip Burlacu, Florence So, Frankie Rodriguez, Furqan Muhammad, Gabriel Robles Del Hierro, Garman Herigstad, Gary Lin, George ElKoura, Gerome Mortelecque, Glenn Tsang, Graham Thompson, Greg Hermanovic, Guan(Alex) Wang, Guillaume Laferriere, Hai Huang, Hálfdan Ingvarsson, Henry Dean, Henry Wen, Ian Kerr, Isaac Luo, Ivan Livinsky, Jack Huang, Jack Zhao, Jacob Clark, James Bartolozzi, James Roberts, Jason Cousins, Jasper Chapman-Black, Jay Steele, Jeff Lait, Jeffy Mathew Philip, Jeffrey Chadwick, Jeffrey Feng, Jeff Wagner, Jenna Memmolo, Jennifer Clarke, Jenny Blacklock, Jerry Wong, Jijun(Jay) Xiao, Joab Souza, Joe Drew, John Courte, John Lynch, John Mariella, John Mather, Jonathan Gardner, Jonathan Lawlor, Jonathan McGee, Jordan Bale, Judith Crow, Juhyun Daniel Lee, Julia Pakalns, Justin Chan, Justin Glass, Kai Stavginski, Keith Acheson, Ken Xu, Keyar Hood, Khashayar Khalkhaly, Kim Davidson, Kosuke Katsuki, Kristofer Lindberg, Kyle Fung, Laura Culp, Lauren Bhagwandat, Leo Chan, Lesly Northam, Liam Palmer, Ling Yun Guo, Lisa Chen, Lisa Kelly, Liza Keith, Luca Pataracchia, Lucas Palmer, Luiz Kruel, Luke Franceschini, Luke Moore, Luke O'Connor, Magdalena Georgescu, Marc Horsfield, Marc-André Belzile, Mark Alexander, Mark Davies, Mark Elendt, Mark Huang, Mark Mayerson, Mark Tucker, Mark Zadel, Matt Chaput, Matthew O’Toole, Matthew Warner, Max Zheng, Maxwell Elendt, Mayank Singh, Mehul Gupta, Michael Ahn, Michael Eden, Michael Goldfarb, Michiel Hagedoorn, Mike Taylor, Mohammad Nabizadeh, Monika Janek, Mykola Konyk, Nadav Koller, Naoki Satou, Ned Datiles, Neil Dickson, Neil Girdhar, Nicholas Higa, Nicolas Petit, Nicholas Sunderland, Nivasini Anan, Noam Sutskever, Oleg Samus, Omar Zarifi, Ondrej Kos, Paul Breslin, Paul Salvini, Pavlo Penenko, Peter Bowmar, Peter MacMurchy, Peter Vale, Peter Yu, Rafal Jaroszkiewicz, Rafeek Rahamut, Ramin Kamal, Ravindu Angammana, Remi Fat Cheung, Rinat Abdrashitov, Rob Bairos, Rob Pieké, Rob Stauffer, Rob Suderman, Robert Magee, Robert Pringle, Robert Vinluan, Rodian Paul, Rudi Chen, Ryan Annis, Ryan Goldade, Sai Gurrappadi, Samuel Haves, Sanand Patel, Scott Keating, Sean Lewkiw, Sean Purcell, Seelan Vamatheva, Sevag Gharibian, Silvina Rocca, Simon Parent, Sophie Ma, Srinath Ravichandran, Stanley Huang, Stephen Tucker, Steve Dugaro, Steven Ong, Sunjay Varma, Syed Bokhari, Syed Zahir Bokhari, Taylor Petrick, Theresa Wolf, Thomas Lai, Tim Dresser, Tina Yee, Tom Benoist, Tom Lee, Tom Yang, Tonia Tong, Tyler Nowicki, Valerie Berney, Varun Gupta, Victor Bui, Ville Koskela, Vincent Ma, Wayne Wu, William Campbell, Xue Cui, Yele Bonilla, Yi-Shiuan Chen, Yin Zhao, Yunkai Xiao, Yusef Zia, Zeming Liu Zhuo Wei Li, Zubin Wadia. Thank you! 👏

Houdini 18.5

Getting started

Using Houdini

  • Geometry

    How Houdini represents geometry and how to create and edit it.

  • Copying and instancing

    How to use copies (real geometry) and instances (loaded or created at render time).

  • Animation

    How to create and keyframe animation in Houdini.

  • Digital assets

    Digital assets let you create reusable nodes and tools from existing networks.

  • Import and export

    How to get scene, object, and other data in and out of Houdini.

  • Executing tasks with PDG/TOPs

    How to define dependencies and schedule tasks using TOP networks.

  • MPlay viewer

    Using Houdini’s stand-alone image viewer.

Character FX

  • Character

    How to rig and animate characters in Houdini.

  • Crowd simulations

    How to create and simulate crowds of characters in Houdini.

  • Hair and fur

    How to create, style, and add dynamics to hair and fur.

Dynamics

  • Particles

    How to create particle simulations.

  • Dynamics

    How to use Houdini’s dynamics networks to create simulations.

  • Vellum

    Vellum uses a Position Based Dynamics approach to cloth, hair, grains, and softbody objects.

  • Pyro

    How to simulate smoke, fire, and explosions.

  • Fluids

    How to set up fluid and ocean simulations.

  • Destruction

    How to break different types of materials.

  • Grains

    How to simulate grainy materials (such as sand).

  • Finite elements

    How to create and simulate deformable objects

Nodes

  • OBJ - Object nodes

    Object nodes represent objects in the scene, such as character parts, geometry objects, lights, cameras, and so on.

  • SOP - Geometry nodes

    Geometry nodes live inside Geo objects and generate geometry.

  • DOP - Dynamics nodes

    Dynamics nodes set up the conditions and rules for dynamics simulations.

  • VOP - Shader nodes

    VOP nodes let you define a program (such as a shader) by connecting nodes together. Houdini then compiles the node network into executable VEX code.

  • LOP - USD nodes

    LOP nodes generate USD describing characters, props, lighting, and rendering.

  • ROP - Render nodes

    Render nodes either render the scene or set up render dependency networks.

  • CHOP - Channel nodes

    Channel nodes create, filter, and manipulate channel data.

  • COP2 - Compositing nodes

    Composite nodes create, filter, and manipulate image data.

  • TOP - Task nodes

    TOP nodes define a workflow where data is fed into the network, turned into "work items" and manipulated by different nodes. Many nodes represent external processes that can be run on the local machine or a server farm.

Lighting, rendering, and compositing

  • Solaris

    Solaris is the umbrella name for Houdini’s scene building, layout, lighting, and rendering tools based on the Universal Scene Description (USD) framework.

  • Rendering

    How to render images and animation from the 3D scene.

  • HQueue

    HQueue is Houdini’s free distributed render and simulation manager.

  • Materials

    How to assign materials and create custom materials for shading.

  • Compositing

    Houdini’s compositing networks let you create and manipulate images such as renders.

Reference

  • Menus

    Explains each of the items in the main menus.

  • Viewers

    Viewer pane types.

  • Panes

    Documents the options in various panes.

  • Windows

    Documents the options in various user interface windows.

  • Stand-alone utilities

    Houdini includes a large number of useful command-line utility programs.

  • Python scripting

    How to script Houdini using Python and the Houdini Object Model.

  • Expression functions

    Expression functions let you compute the value of parameters.

  • HScript commands

    HScript is Houdini’s legacy scripting language.

  • VEX

    VEX is a high-performance expression language used in many places in Houdini, such as writing shaders.

  • Properties

    Properties let you set up flexible and powerful hierarchies of rendering, shading, lighting, and camera parameters.

  • Galleries

    Pre-made materials included with Houdini.

  • Houdini packages

    How to write and combine multiple environment variable definition files for different plug-ins, tools, and add-ons.