Here is an account of the process I developed to get the boundary-first-flattening library building for use on the web via WebAssembly.
Boundary First Flattening (I refer to it as BFF throughout this article) is a powerful algorithm and library for “surface parameterization” - or projecting 3D surfaces into 2D. It also includes built-in support for other parts of a full UV unwrapping pipeline like bin-packing texture islands into a square. I was using it for my Geotoy project - a browser-based, Shadertoy-inspired web app for procedural geometry.

Casey Primozic

A detailed walkthrough of compiling the Boundary-First-Flattening (BFF) C++ library to WebAssembly for use in the browser. The process involves building OpenBLAS (with LAPACK) for Wasm using Emscripten, patching and building SuiteSparse against it, applying CMake and source code fixes to BFF itself (including a 32-bit size_t bug), and wrapping the result in a custom JS/TypeScript shim that exposes a single `unwrapUVs` function. The guide covers specific patches, CMake overrides, library placement for Emscripten's search path, and ES Module injection.

Compiling the Boundary-First-Flattening Library to Wasm