Joshua Koo

Hello!

I’m Joshua and this is my playground.

Current Toys

• 2D Bomberman clone
• First person Bomberman
• Multiplayer first person Bomberman
• In-browser MIDI and Soundfont player + Piano visualizer

Connect

• GitHub: @zz85
• X/Twitter: @blurspline
• Location: Seattle

GitHub Projects

Three.js Ecosystem

• three.js - Core contributor to the popular JavaScript 3D library
• ThreeLabs - Experimental features and prototypes for Three.js
• threejs-term - Terminal-based renderer for Three.js
• threejs-path-flow - Mesh deformation and curve-following animations
• three-raytracing-renderer - Pure JavaScript raytracing renderer (no canvas/WebGL)
• crayon.js - Node-based shader library for Three.js
• mrdoobapproves - Fun approval bot

Visual Experiments

• FractalLab - Interactive WebGL fractal renderer
• random-sketches - Collection of creative coding experiments
• bezierlights - Bezier curve lighting effects

🦀 Systems Programming & Performance

eBPF & Profiling

• profile-bee - eBPF-based CPU profiler in Rust
• papaya-tools - Collection of eBPF/aya utilities
• mem-tools - Experimental memory analysis tools

Networking & Protocols

• packet_radar - Real-time network packet analysis and visualization
• tcc-trace - TCP congestion control tracing tool
• quic-initial-degreaser - QUIC packet cleanup utility
• shoeprint - Network diagnostics (traceroute, ping, mtr, whois)

📊 Visualization & Data Tools

System Monitoring

• space-radar - Disk and memory visualization with Electron & d3.js (1.4k+ stars)
• space-rust - Rust implementation of space scanning

Development Tools

• kafka-streams-viz - Kafka Streams topology visualization (422 stars)
• graph-github-issues - GitHub issues/PRs timeline visualization
• ascii-graphs.js - ASCII-based data visualizations

🎵 Music & Audio

Music Notation & Playback

• nwc-viewer - Noteworthy Composer music notation viewer & player
• nwc2ly.py - Noteworthy Composer to Lilypond converter
• wild-web-midi - High-quality MIDI playback in browser (Emscripten port)
• midiviz - MIDI visualizations
• phonopaper.js - JavaScript implementation of PhonoPaper

🤖 AI & Automation

• silly-ai - Voice-first local AI assistant running on macOS

🛠️ Developer Utilities

Animation & Timing

• timeliner - JavaScript timeline library for animation (731 stars)

Browser Tools

• zz85-bookmarklets - Collection of useful bookmarklets
• contact.js - Multi-touch and sensor beaming via WebSockets
• keyboard.js - Virtual keyboard experiments