immortaly007andClaude Opus 5.5
55a25ba978
Fit the background brightness from the photo border and subtract it, so side-lit photos threshold cleanly. The clicked pixel (or, without a click, the border) decides whether the piece is darker or lighter, replacing the invert checkbox. Adds the MDF-on-wood-floor photo as a regression fixture. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
26 lines
1.1 KiB
Markdown
26 lines
1.1 KiB
Markdown
# Scrap Tracer
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Turn a phone photo of a laser-cut scrap piece into a 1:1 DXF/SVG outline, so you can check in
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RDWorks (or LightBurn/Inkscape) whether your design fits on it. Built for Makerspace Delft.
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## Use
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1. Photograph the piece from straight above, on a contrasting surface, with something of known length visible.
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2. Load the photo, click **Measure**, click both ends of the known length, and enter it in mm.
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3. Check the green outline. If needed, click the piece (this also tells the app whether
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it is darker or lighter than the background), adjust the threshold, or draw the outline by hand.
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4. Set the safety margin (default −2 mm shrinks the usable area a little).
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5. Download DXF and import it in your laser software at 1:1, in mm.
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## Develop
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npm install
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npm run dev # local dev server
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npm test # unit tests (Vitest, OpenCV runs headless in Node)
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npm run check # type check
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npm run build # static build in dist/
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## Deploy (Cloudflare Pages)
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Build command `npm run build`, output directory `dist`. No server or environment variables needed.
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