Posted by Gary S on Jul 11, 2018; 7:21pm
URL: https://forum.librecad.org/snap-intersection-circle-line-tp5716171p5716172.html

Hello  alberich

I saved the file you attached opened it up in V2.2.0-RC1 (Debian), and attempted to draw a few lines with the intersection snap. I had the same problem - I could not snap to the intersection between the line and the circle, at either point.  The other intersections worked fine.  I've used this snap previously and it wasn't a problem...

So, I then started an new drawing, drew a circle and then crossed it with a line at a random location.  I drew additional lines snapping to the intersection of the two and it worked as it should.  I tried a few times, circles drawn as centre/radius, two points and three points.  And crossed each one with a single line.  I then drew more lines to and from the intersections and it all seemed to work as it should.  I don't know why it works for in a new drawing and not in the drawing you provided.  Hmmm...

I moved the entities in your drawing closer to the origin (1,1) and tried again - the snaps work!  Go figure.  I don't know why, but it is as you stated: "circles and lines are a little bit far from the origin".  Perhaps someone with a better understanding of the snaps could offer an explanation...

Cheers,
Gary