Verlet Rope

Verlet-integration rope/cloth strand simulation, in C.

A small, self-contained demo written in pure C — no external libraries, just the standard library and POSIX. Part of the Corg-Labs collection of single-file C programs.

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How It Works

1. Each node integrates position using Verlet integration
2. Gravity is added to every free node each step
3. Distance constraints between nodes are solved iteratively
4. The anchor node swings side to side to drive motion

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Build

gcc rope.c -o rope -lm

Run

./rope

Controls

Press Ctrl-C to quit.