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principal curvature streamlines

Hold

Techniques

Streamlines traced along principal curvature directions for hatching and shading.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

  • 5Hacker News·9/8/2026research
    Interactive Rendering of a Topological Picture Book

    This project presents an interactive renderer inspired by G. K. Francis’s "A Topological Picture Book," showing mathematical surfaces such as the torus with hand-drawn line-art styling. It combines silhouettes, hidden lines, hatching, and labels using techniques like marching tetrahedra, principal-curvature streamlines, and GPU-based visibility handling.