ASCII Globe

Rotating ASCII globe with simple lighting, 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. Sphere surface points are generated from spherical coordinates
2. Each point is rotated around the vertical axis per frame
3. A z-buffer keeps only the nearest point per cell
4. A dot product with a light direction picks the shade character

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Build

gcc globe.c -o globe -lm

Run

./globe

Controls

Press Ctrl-C to quit.