This repository contains miscellaneous code from throughout my career.

I do not support this code through github--use it at your own risk, and please don't send feature requests or ask for help with it. Some of it was written while I was an undergraduate and may not compile on modern machines.

Some additional open source projects that I do actively support are hosted elsewhere due to github's file size and other restrictions. These are:

The G3D Innovation Engine C++ 3D graphics library
codeheart.js Javascript 2D game library
Markdeep Document beautification tool
iCompile Zero-configuration build system
include.js Cross-domain, cross-browser HTML include tag

The code in this repository is organized by topic.

Unity

tachyon - Unity 5.4 starter project for a Pong-like 3D game. Particle systems, events, gamepad, logic, physics, etc. August 2016.
tachyonVR - Unity 5.4 VR starter project for a Pong-like 3D game. Teleporting, fast rendering, Vive controllers, etc. August 2016.

Graphics

oculusSample - Oculus SDK OpenGL Sample. Windows Visual Studio project for initializing and rendering to a DK2 or later HMD using OpenGL. June 2015.
terrain - Continuous detail GPU Terrain, with multi-scale texturing and a hardware optimized variant of the geo clipmap. April 2014 http://casual-effects.blogspot.com/2014/04/fast-terrain-rendering-with-continuous.html
normal2bump - Compute bump map (height field/displacment) from a normal map. 2014.
convertToOBJ - Convert various 3D model formats to OBJ, e.g., IFS, PLY, PLY3, 3DS. 2013
cgpp3 - Minimal graphics support routines from Computer Graphics: Principles and Practice 3rd edition for loading a 3D model and image, and displaying and saving images. 2012.
glToScreen - Reverse OpenGL projection from my flipcode article. Pre-2005.
glProject - Forward OpenGL projection from my flipcode article. Pre-2005.
2DOBB - 2D oriented bounding box collision test from my flipcode article. Pre-2005.

C++

sort - Elegant C++ reference implementations of heapSort, insertionSort, mergeSort, and quickSort. (now maintained in The Graphics Codex). December 2012
indent++ - Pretty-printer for indenting existing C++ files (handy for printing assignments when grading). 2012.
getip - Obtain the current machine's IP address. Pre-2005.
kbhit - Linux/OS X implementation of Windows console kbhit(). Pre-2005.
sprintf - Safe sprintf (now maintained in G3D as format()). Pre-2005.

JavaScript

cardgen - HTML5/Javascript/CSS playing card template for creating custom decks. May 2015.
relay - Node.js based relay server and sample application demonstrating its use. 2013.
treeList - Lightweight selectable and scrollable tree list UI. 2012.
jsmaze - Recursive perfect maze generator, with wrapping and imperfect options. 2018.
jsvectorify - Vector operations and operator overloading. 2018.
jsmenu - Lightweight library for dropdown menus. 2018.
jsloadmanager - Caching and post-processing for recursive resource loading via XMLHttpRequest/fetch. 2018.

Java

javasandbox - ClassLoader for dynamic class reloading, useful for plugins. Executes arbitrary Java code in a protected sandbox. 2008.
redblack - Red-black Tree implementation and demo. 2008.
javadoom - Simple Doom-style ray caster written for a data structures course. 2008.
javarasterizer - Simple rasterizer written for a data structures course. 2008.
splay - Splay Tree applet and source code. 2003.

Lua/PICO-8

platformer - Full featured character simulation for a 2D platformer. 2017.
p8particle - Very fast single-pixel particle system for PICO-8. 2017.
p8sort - Very fast PICO-8 sort. 2017.
p8escape - Allow lowercase characters in printed PICO-8 strings. This is actually a web utility, not PICO-8 code itself. 2017
p8controller - Minimal-memory PICO-8 controller image for instruction screens. 2017.
p8pathfinder - Fully general PICO-8 A* (A-star) and Dijkstra pathfinding in a single function. 2017.
p8scale - Enhanced HQx 2x, 3x, 4x scaling with transparency and better curves

Scheme

infix - Recursive descent infix parser and macro for Scheme. 2003.

Other

xenon - 16-bit Windows 3.1 video game written in Visual Basic. 1995.

Liquidream / misc