Contour
A browser renderer for large elevation datasets. Streams terrain tiles and draws smooth isolines at 60fps without a mapping framework.
Placeholder entry — replace with a real project.
Contour takes a digital elevation model and turns it into clean isolines in the browser, offloading the marching-squares pass to a worker pool so the main thread stays free for interaction.
The survey
- Handles a national-scale dataset by streaming tiles on demand.
- Isoline simplification keeps line counts sane when zoomed out.
- No mapping library — just Canvas and arithmetic.
Field notes
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