plumpmath / snow

OpenGL and Houdini snow simulation (material point method)

Snow Simulation

This is an implementation of "A Material Point Method for Snow Simulation" (Stomakhin et al., 2013). There is a 2D version for OpenGL and a 3D version for Houdini.

Demo video is on YouTube:

2D Simulator

You may need to modify the project build settings for it to work. Build dependencies:

• GLFW: http://www.glfw.org/
• FreeImage: http://freeimage.sourceforge.net/

Prebuilt versions of these libraries are included for debian based systems (x86-64).

Controls

• Click: adds a point for a snow shape
• Enter: finishes previous snow shape and starts a new one
• C: allows you to create a circle shape (first click sets origin, second click sets radius)
• F12: converts snow shapes to particles and starts the simulation
• ESC: stops the simulation and removes all snow

3D Simulator

A Houdini digital asset, ramshorn_fx_mpm_snow_otl_stable.otl has been created for simulation and rendering setup. You'll need to install this otl as well as the snow solver node plugin. Source code is in SIM_SnowSolver.c. Run setup.sh to build the plugin (Note: you may need to modify setup.sh to point to your houdini installation directory). See tutorial.txt and tutorial.hipnc for a basic setup.