Programming

• Dec 4, 2013

  First

  The very first post on the old site, with a small code and math test.

• Dec 4, 2013

  Migrating to github.io

  Notes from moving the original site to GitHub Pages and Jekyll.

• Jan 4, 2014

  JavaScript Image Processing (1) - Getting Started

  Getting started with image processing in JavaScript, from pixels to image loaders.

• Jan 5, 2014

  JavaScript Image Processing (2) - The Image Class

  Building the core image class for pixel access, sampling, and image operations.

• Feb 24, 2014

  JavaScript Image Processing (3) - Brightness/Contrast Adjustment

  Applying basic brightness and contrast filters with the ImageProcJS toolkit.

• Feb 26, 2014

  JavaScript Image Processing (4) - Histogram Equalization

  A walkthrough of histograms, cumulative distributions, and histogram equalization.

• Nov 5, 2015

  Boost Graph Library - A Primer

  A quick introduction to BGL data structures, graph operations, and traversal.

• Jan 10, 2024

  Programming Async (1): Wrapping Functions with Callbacks as Promises

  Some notes on writing async programs.

• Apr 22, 2026

  Refactoring My Personal Site

  From Express + SQLite to a vibe-coded Eleventy static site with five distinct themes

• Apr 23, 2026

  AOS: An Agent Operating System

  Building a research prototype where agents collaborate through runtime primitives—artifacts, IPC, capabilities, and scheduling.

• Apr 24, 2026

  Refactoring My Ray Tracer: From Broken to WebGPU Path Tracing

  One character broke eight years of rendering. Codex fixed it, added Monte Carlo path tracing, and a WebGPU backend that's roughly 10x faster than CPU workers.

• May 5, 2026

  Adding Meshes, BVHs, and Photon Mapping to My Browser Ray Tracer

  The follow-up to the ray tracer refactor: Stanford bunnies, CPU photon mapping, world-space caustics, and a lot of renderer debugging.

• Oct 18, 2026

  A Local-Only Garage Door Opener for Apple Home

  Two ESP8266 boards, one Homebridge accessory plugin and no vendor cloud: how the pieces fit together, and how many of the design decisions were forced by an opener with a single momentary input.