Don Cross

astronomy. Astronomy Engine: multi-language calculation of Sun, Moon, and planet positions. Predicts lunar phases, eclipses, transits, oppositions, conjunctions, equinoxes, solstices, rise/set times, and other events. Provides vector and angular coordinate transforms among equatorial, ecliptic, horizontal, and galactic orientations.

sapphire. Sapphire - free modules for VCV Rack 2

chenard. Chenard - a free chess program by Don Cross

parser. Parse math expressions and render them using MathJax.

chainsim. Demo of interactive physics simulation in JavaScript.

geocalc. Online geographic calculators

zeroconfig. Dotnet Core C# library for MDNS zeroconfig browsing, resolving, and publishing. Self-contained -- no external dependencies.

jcadmin. A web-based interface to administrate jcblock (junk call blocker).

mandelzoom. Creates video zooms into the Mandelbrot Set.

endgame. Chess endgame database generator.

electrons. Simulation of mutually repulsive particles confined to the surface of a sphere

sloth. Circuit simulation of Sloth module by Nonlinear Circuits

harmonograph. Browser simulation of the Victorian-era pendulum device to draw patterns on paper.

svgpanel. Python library for generating SVG panel designs for VCV Rack

interpolator. A polynomial interpolator as a single-header C++ class template.

gravimeter. A pendulum-based device for measuring the gravitational acceleration at a given location on the Earth's surface. Uses a GPS-referenced clock for accurate timing data.

compressgame. Tutorial code for data compression concepts

ephemeris. Just a bucket to hold ephemeris files

flywheel. A chess engine for the web browser

raytrace. C++ source code from my book Fundamentals of Ray Tracing

toolbox. VCV Rack developer tools in the form of a VCV Rack plugin

gravsim. Gravitational simulation of the solar system

diodeplot. Microcontroller project to measure and plot the current/voltage curve for a diode.

freefall. Freefall - a symbolic algebra helper written in F#.