30 lines
911 B
Markdown
30 lines
911 B
Markdown
# billboard
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Public pixel-canvas / message billboard. Runs at https://billboard.pinkro.se
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## API
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Palette colors are indices 0–15 (standard ANSI colors). Origin is top-left.
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```sh
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# place one pixel
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curl -X POST localhost:8080/api/pixel -d '{"x":10,"y":5,"color":3}'
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# place many pixels atomically (1-2048 per request, fails as a whole if any is invalid)
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curl -X POST localhost:8080/api/pixels -d '{"pixels":[{"x":1,"y":1,"color":3},{"x":2,"y":1,"color":4}]}'
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# stamp a full image (max 32x32) at offset x,y; edges clip
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curl -X POST localhost:8080/api/image -d '{"x":20,"y":8,"pixels":[[0,4,4,0],[4,4,4,4],[4,0,0,4],[0,4,4,0]]}'
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# post a message (max 140 chars, last 50 kept)
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curl -X POST localhost:8080/api/message -d '{"text":"hello billboard"}'
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# full state snapshot
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curl localhost:8080/api/state
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# live event stream
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curl -N localhost:8080/api/events
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```
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