string art generator

This page turns a photo into a string-art PNG. Nails sit on a circle and lines follow the dark parts of the photo. You leave with that PNG, not the original photo and not a PDF instruction.

Do not click Download PNG. A file that is not an image has no PNG.

Methods

1. POST https://codemarket-d273ae066a43.herokuapp.com/api/v1/string-art/jobs/ builds the pattern. Send multipart file as the photo and optional nails from 50 to 120. The method places the nails and draws lines across the dark pixels. The response is job_id and status queued. No file returns 400.
2. GET https://codemarket-d273ae066a43.herokuapp.com/api/v1/string-art/jobs/{job_id}/ is the wait. queued and running mean the PNG is not ready. failed means there is no file. Stop only on succeeded.
3. GET https://codemarket-d273ae066a43.herokuapp.com/api/v1/string-art/jobs/{job_id}/result/ returns string-art.png after succeeded. It is a 640 by 640 drawing. A light photo has few lines. It is not the uploaded photo.