https://rreusser.github.io/notebooks/ Interactive notebooks on graphics, math, and creative coding en-us Mon, 25 May 2026 06:59:30 GMT https://rreusser.github.io/notebooks/zooming-aperiodic-monotile/ https://rreusser.github.io/notebooks/zooming-aperiodic-monotile/ Tue, 28 Apr 2026 00:00:00 GMT A (sort of) infinite zooming spectre aperiodic monotile https://rreusser.github.io/notebooks/aperiodic-monotile/ https://rreusser.github.io/notebooks/aperiodic-monotile/ Sat, 25 Apr 2026 00:00:00 GMT Rendering the spectre a chiral aperiodic monotile of Smith, Myers, Kaplan, and Goodman-Strauss. https://rreusser.github.io/notebooks/line-sweep-terrain-lighting/ https://rreusser.github.io/notebooks/line-sweep-terrain-lighting/ Sun, 19 Apr 2026 00:00:00 GMT Terrain shadowing and ambient occlusion for web maps using fast horizon visibility https://rreusser.github.io/notebooks/costa-surface/ https://rreusser.github.io/notebooks/costa-surface/ Tue, 17 Mar 2026 00:00:00 GMT Costa's minimal surface, a thrice-punctured torus with two catenoidal ends and a planar end https://rreusser.github.io/notebooks/rewriting-my-website-in-observable-notebook-kit/ https://rreusser.github.io/notebooks/rewriting-my-website-in-observable-notebook-kit/ Wed, 11 Mar 2026 00:00:00 GMT How I migrated this website from Idyll to Observable Notebook Kit https://rreusser.github.io/notebooks/boys-surface/ https://rreusser.github.io/notebooks/boys-surface/ Sat, 28 Feb 2026 00:00:00 GMT Boy's surface, an immersion of the real projective plane in three-dimensional Euclidean space https://rreusser.github.io/notebooks/denali/ https://rreusser.github.io/notebooks/denali/ Sun, 08 Feb 2026 00:00:00 GMT Interactive 3D terrain viewer for the Denali region built from scratch with WebGPU https://rreusser.github.io/notebooks/visualizing-sloan-digital-sky-survey-data/ https://rreusser.github.io/notebooks/visualizing-sloan-digital-sky-survey-data/ Sun, 01 Feb 2026 00:00:00 GMT Visualizing 3.3 million galaxies and quasars from the Sloan Digital Sky Survey https://rreusser.github.io/notebooks/hess-smith-panel-solver/ https://rreusser.github.io/notebooks/hess-smith-panel-solver/ Sun, 25 Jan 2026 00:00:00 GMT Interactive demonstration of using the Hess-Smith panel method to compute the aerodynamic flow around an airfoil https://rreusser.github.io/notebooks/multiscale-turing-patterns/ https://rreusser.github.io/notebooks/multiscale-turing-patterns/ Tue, 20 Jan 2026 00:00:00 GMT Interactive multi-scale Turing patterns computed in WebGPU https://rreusser.github.io/notebooks/strange-attractors-in-webgpu/ https://rreusser.github.io/notebooks/strange-attractors-in-webgpu/ Sat, 17 Jan 2026 00:00:00 GMT Strange attractors — chaotic dynamical systems whose trajectories trace out intricate fractal structures https://rreusser.github.io/notebooks/webgpu-lines/ https://rreusser.github.io/notebooks/webgpu-lines/ Fri, 16 Jan 2026 00:00:00 GMT GPU-accelerated line rendering for WebGPU https://rreusser.github.io/notebooks/plot-with-zoom/ https://rreusser.github.io/notebooks/plot-with-zoom/ Tue, 13 Jan 2026 00:00:00 GMT Interactive mathematical plotting in Observable Notebook Kit https://rreusser.github.io/notebooks/simulating-the-2d-kuramoto-sivashinsky-equation-in-webgpu/ https://rreusser.github.io/notebooks/simulating-the-2d-kuramoto-sivashinsky-equation-in-webgpu/ Sat, 10 Jan 2026 00:00:00 GMT The 2D Kuramoto-Sivashinsky equation, a chaotic PDE modeling pattern formation in combustion fronts and thin films. https://rreusser.github.io/notebooks/perfectly-matched-layers-for-the-wave-equation/ https://rreusser.github.io/notebooks/perfectly-matched-layers-for-the-wave-equation/ Wed, 31 Dec 2025 00:00:00 GMT An explanation and WebGL implementation of Perfectly Matched Layers for absorbing boundary conditions in the scalar wave equation. https://rreusser.github.io/notebooks/reflecting-on-two-years-of-yoga/ https://rreusser.github.io/notebooks/reflecting-on-two-years-of-yoga/ Sat, 27 Dec 2025 00:00:00 GMT A personal reflection on consistent yoga practice with attendance visualizations over two years. https://rreusser.github.io/notebooks/hello-observable-notebooks-2/ https://rreusser.github.io/notebooks/hello-observable-notebooks-2/ Sun, 03 Aug 2025 00:00:00 GMT Kicking the tires of Observable's new notebook tooling! https://rreusser.github.io/notebooks/clifford-and-de-jong-attractors/ https://rreusser.github.io/notebooks/clifford-and-de-jong-attractors/ Fri, 16 May 2025 00:00:00 GMT Clifford and de Jong strange attractors with interactive zooming. https://rreusser.github.io/notebooks/chaotic-magnetic-pendulum/ https://rreusser.github.io/notebooks/chaotic-magnetic-pendulum/ Wed, 07 Aug 2024 00:00:00 GMT Interactive visualization of a magnetic pendulum demonstrating chaotic dynamics. https://rreusser.github.io/notebooks/spring-training/ https://rreusser.github.io/notebooks/spring-training/ Sat, 08 Jun 2024 00:00:00 GMT Quantifying treadmill efforts (to the point of injury). https://rreusser.github.io/notebooks/speed-climbing-world-record-progression/ https://rreusser.github.io/notebooks/speed-climbing-world-record-progression/ Fri, 03 May 2024 00:00:00 GMT Plotting and extrapolating trends in competitive speed climbing https://rreusser.github.io/notebooks/sliced-optimal-transport/ https://rreusser.github.io/notebooks/sliced-optimal-transport/ Tue, 28 Nov 2023 00:00:00 GMT Approximate pixel redistribution between images using sliced optimal transport. https://rreusser.github.io/notebooks/shanks-transformation/ https://rreusser.github.io/notebooks/shanks-transformation/ Sat, 23 Sep 2023 00:00:00 GMT The Shanks transformation for accelerating slowly-converging series, demonstrated on the arctangent formula for π. https://rreusser.github.io/notebooks/cubic-basis-vs-hermite-interpolation/ https://rreusser.github.io/notebooks/cubic-basis-vs-hermite-interpolation/ Sat, 13 May 2023 00:00:00 GMT Visually compare cubic interpolation using different basis functions. https://rreusser.github.io/notebooks/bicubic-texture-interpolation-using-linear-filtering/ https://rreusser.github.io/notebooks/bicubic-texture-interpolation-using-linear-filtering/ Fri, 06 Jan 2023 00:00:00 GMT Smooth bicubic texture filtering using the GPU's built-in bilinear interpolation. https://rreusser.github.io/notebooks/knocking-down-the-gates-with-jacobi/ https://rreusser.github.io/notebooks/knocking-down-the-gates-with-jacobi/ Wed, 16 Nov 2022 00:00:00 GMT Using Jacobi elliptic functions to solve an optimization problem about falling poles and large-amplitude pendulum dynamics. https://rreusser.github.io/notebooks/night-and-day/ https://rreusser.github.io/notebooks/night-and-day/ Mon, 24 Oct 2022 00:00:00 GMT Visualizing Earth's solar terminator on a Mapbox map using NASA Black Marble imagery and WebGL shaders. https://rreusser.github.io/notebooks/fast-generalized-winding-numbers-in-2d/ https://rreusser.github.io/notebooks/fast-generalized-winding-numbers-in-2d/ Wed, 07 Sep 2022 00:00:00 GMT Fast generalized winding numbers in 2D for robust inside-outside queries on arbitrary polygons. https://rreusser.github.io/notebooks/pure-css-periodic-three-body-orbits/ https://rreusser.github.io/notebooks/pure-css-periodic-three-body-orbits/ Sat, 26 Feb 2022 00:00:00 GMT Animating periodic three-body orbits using pure CSS keyframe animations generated from Fourier decomposition. https://rreusser.github.io/notebooks/lawsons-klein-bottle/ https://rreusser.github.io/notebooks/lawsons-klein-bottle/ Sat, 18 Sep 2021 00:00:00 GMT Lawson's Klein bottle, a generalization of the Clifford torus in 4D space https://rreusser.github.io/notebooks/computing-pi-with-the-bailey-borwein-plouffe-formula/ https://rreusser.github.io/notebooks/computing-pi-with-the-bailey-borwein-plouffe-formula/ Mon, 24 May 2021 00:00:00 GMT Computing hexadecimal digits of π at arbitrary positions using the Bailey-Borwein-Plouffe formula. https://rreusser.github.io/notebooks/double-pendulum-map/ https://rreusser.github.io/notebooks/double-pendulum-map/ Fri, 14 May 2021 00:00:00 GMT Visualizing the phase space of simple and compound double pendulums, showing how chaos emerges from coupled nonlinear oscillations. https://rreusser.github.io/notebooks/malkus-waterwheel/ https://rreusser.github.io/notebooks/malkus-waterwheel/ Sat, 13 Feb 2021 00:00:00 GMT Interactive simulation of a chaotic mechanical system whose dynamics map to the Lorenz attractor. https://rreusser.github.io/notebooks/point-cloud-point-opacity/ https://rreusser.github.io/notebooks/point-cloud-point-opacity/ Tue, 08 Dec 2020 00:00:00 GMT Deriving the formula for point opacity in large point cloud visualizations to maintain consistent visual density. https://rreusser.github.io/notebooks/adaptive-contouring-in-fragment-shaders/ https://rreusser.github.io/notebooks/adaptive-contouring-in-fragment-shaders/ Sat, 21 Nov 2020 00:00:00 GMT Adaptive contour rendering in fragment shaders using screen-space derivatives for smooth, resolution-independent contour lines. https://rreusser.github.io/notebooks/webgpu-voronoi-diagrams-using-the-jump-flooding-algorithm/ https://rreusser.github.io/notebooks/webgpu-voronoi-diagrams-using-the-jump-flooding-algorithm/ Thu, 09 Jul 2020 00:00:00 GMT Computing Voronoi diagrams and distance fields on the GPU using the Jump Flooding Algorithm. https://rreusser.github.io/notebooks/sphere-eversion/ https://rreusser.github.io/notebooks/sphere-eversion/ Mon, 29 Jun 2020 00:00:00 GMT The Bednorz and Bednorz analytic sphere eversion, a continuous deformation turning a sphere inside out without creasing or tearing https://rreusser.github.io/notebooks/transparency-for-3d-surfaces/ https://rreusser.github.io/notebooks/transparency-for-3d-surfaces/ Sat, 13 Jun 2020 00:00:00 GMT A comparison of three approaches to rendering transparent 3D surfaces in WebGPU, including a simple two-pass hack that draws gridlines and edges through solid geometry, weighted blended order-independent transparency, and depth peeling. https://rreusser.github.io/notebooks/charmin-nanotubes-and-toiletpaperfullerenes/ https://rreusser.github.io/notebooks/charmin-nanotubes-and-toiletpaperfullerenes/ Fri, 01 May 2020 00:00:00 GMT Interactive 3D simulation of nanotube and fullerene structures that can be physically constructed from toilet paper tubes. https://rreusser.github.io/notebooks/particle-mesh-gravity/ https://rreusser.github.io/notebooks/particle-mesh-gravity/ Sun, 03 Nov 2019 00:00:00 GMT 2D gravitational N-body simulation using the particle-mesh method. https://rreusser.github.io/notebooks/periodic-planar-three-body-orbits/ https://rreusser.github.io/notebooks/periodic-planar-three-body-orbits/ Sun, 01 Sep 2019 00:00:00 GMT Interactive catalog of periodic three-body orbits with topological classification via free group words. https://rreusser.github.io/notebooks/multi-scale-turing-pattern-gallery-2/ https://rreusser.github.io/notebooks/multi-scale-turing-pattern-gallery-2/ Fri, 15 Mar 2019 00:00:00 GMT Another gallery of multi-scale Turing patterns https://rreusser.github.io/notebooks/multi-scale-turing-pattern-gallery-1/ https://rreusser.github.io/notebooks/multi-scale-turing-pattern-gallery-1/ Fri, 19 Oct 2018 00:00:00 GMT A gallery of multi-scale Turing patterns https://rreusser.github.io/notebooks/aligning-3d-scans/ https://rreusser.github.io/notebooks/aligning-3d-scans/ Sat, 28 Jul 2018 00:00:00 GMT Automatically orienting 3D scans by computing principal axes from surface normals. https://rreusser.github.io/notebooks/things-i-learned-the-hard-way-using-react-native/ https://rreusser.github.io/notebooks/things-i-learned-the-hard-way-using-react-native/ Thu, 05 May 2016 00:00:00 GMT A collection of lessons learned from eight months of React Native development - environment setup, Redux patterns, performance optimization, and cross-platform gotchas. https://rreusser.github.io/notebooks/a-series-of-unfortunate-things-i-programmed-one-time/ https://rreusser.github.io/notebooks/a-series-of-unfortunate-things-i-programmed-one-time/ Mon, 16 Mar 2015 00:00:00 GMT Reflections on a decade of programming projects and the search for meaning in complexity