Auto-labeling of parts in DXF for laser cutting

For laser cutting, each part in the layout needs its own DataMatrix code — doing this manually is unrealistic when there are hundreds of parts. The most interesting part here is not drawing the code, but accurately understanding which closed contour belongs to which part: I do this using point-in-polygon, take the unique ID, and place the DataMatrix right inside the required part, on a separate marking layer. CypCut does not read raster, so the code goes as pure vector geometry to ezdxf; I do not touch the layout itself — just add a layer, and the file returns to production ready. #python #ezdxf #dxf #datamatrix #cad