Life & fun · December 14, 2024
Library to replace box shadows on a webpage with ray traced shadows
In plain words
This JavaScript library replaces standard box shadows on webpages with ray-traced shadows, creating more realistic lighting effects. It's designed for web developers who want enhanced visual realism for their projects. The library uses ray tracing techniques to compute shadow geometry, offering a technical alternative to CSS box shadows for users seeking higher-quality shadow rendering on their sites.
written from the facts on this page · September 2026
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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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