Andrew, How comes … Included a dxf with 2 polylines in different scales. Odd-Self-Intersections.dxf (121 KB) I marked the self-intersection vectors returned by: var points = polyline.getSelfIntersectionPoints(); How comes that .getSelfIntersectionPoints returns actual singular vertices of a po…

This is very likely a tolerance issue (since there are arc segments involved). I will add a tolerance parameter for the next update.

Ok, thanks. Yes, bulging is involved as these are explosions of splines. Snippets of the Eagle shape here: [image] Offsets CAD, CAM related Chat Win7pro 32bit Wininstaller Qcadpro 3.23.0 All, Cad’s & CadCams, As engraver I usually use conical shaped engravi…

Andrew, add tolerance to getSelfIntersectionPoints committed 03:38PM - 17 Jun 21 UTC (UTC) [image] qcad +6 -6 …

Andrew, All, Based on a wide survey … (0 … 10,000,000) Filtering all false positives from an RPolyline.getSelfIntersectionPoints() list … Including for troublesome bulging polylines … Ignoring the bulge factors to arc shapes floating point uncertanties … But simply based on the largest absolute…

Odd self intersection points

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CVH June 17, 2021, 7:21pm 3

Ok, thanks.

Yes, bulging is involved as these are explosions of splines.

Snippets of the Eagle shape here:

Just any of the many shapes I use to lauch trial maths on.

RoundCorners
Pocketing
…

Regards,
CVH