Interactive “Topological Picture Book” renders mathematical surfaces as hand-hatched, mid-century-style engravings in the browser

The project presents an interactive tool for exploring surfaces such as a torus, letting users rotate models, adjust parameters, and render them as hand-drawn engravings. It uses mesh triangulation, contour detection, hidden-line handling, and principal-curvature hatching to create illustrations that mimic classic mathematical picture books.

This shows how browser graphics can blend computation with historical scientific illustration, turning complex geometry into approachable visual artifacts. The emphasis on stroke-based rendering rather than pixels points to a broader trend in expressive visualization tools for education, research, and digital publishing.