Troy Henderson

Education

Function Grapher uses MetaPost and allows users to easily graph functions, parametric curves, and surfaces.
MetaPost Previewer allows users to test MetaPost and generate EPS, PDF, and SVG output for the generated graphics.
LaTeX Previewer is useful for experimenting with LaTeX without having to deal with many of the intricacies of the compile process.
Treelights Calculator can be used to compute the vertical spacing between each rotation of lights on a Christmas tree.
An old Card Trick from my childhood.
Retro TI-99/4A programs ported to JavaScript (with HTML/CSS interface)

Numerical Integrator computes the definite integral of a function numerically.
Gaussian Quadrature Nodes and Weights are computed numerically for any order.
Animations is a compilation of several animations created with MetaPost/ConTeXt.
Root Finder locates a root of a real-valued function on a given interval.
Quadratic Factorer demonstrates the process of factoring any quadratic over the integers.
Rational Roots of Polynomial computes each rational root and corresponding multipicity for a polynomial with integer coefficients.
Euclidean Algorithm is used to find the greatest common divisor and least common multiple of two positive integers.
Sieve of Eratosthenes is used to recursively finds primes.
Elementary school Multiplication and Division.
Polygon Calculator calculates the diameter, perimeter, area, and centroid of simple polygons.
Use continued fractions to approximate any real number with a Rational Number.
Convert EPS/PDF/SVG to Grayscale.
Place a EPS/PDF wrapper around PNG/JPEG Raster Graphics.
Loan Calculator computes the principal, payment, interest rate, or term for loans with compound interest.

[PDF] Modeling the Steeping of Southern Sweet Iced Tea, Systemic Initiative for Modeling Investigations and Opportunities with Differential Equations" (SIMIODE), 2016.
[PDF] Modeling the Smoking Process of Southern Barbecue, Systemic Initiative for Modeling Investigations and Opportunities with Differential Equations" (SIMIODE), 2016.
[PDF] User-friendly web utilities for generating LaTeX output and MetaPost graphics, TUGboat, vol. 33 (2012), no. 1.
[PDF] A beginner's guide to MetaPost for creating high-quality graphics, TUGboat, vol. 28 (2007), no. 1 (Editors requested simultaneous publication in PracTeX Journal).
[PDF] A beginner's guide to MetaPost for creating high-quality graphics, PracTeX Journal, vol. 2006, no. 4. (Editors requested simultaneous publication in TUGboat, vol. 28 (2007), no. 1).
[PDF] Embedding fonts in MetaPost output, TUGboat, vol. 26 (2005), no. 3, pp. 250-252.

Updated December 30, 2022