I was playing a bit with some of the newer tools and I stumbled on a puzzling behavior with the circle tools:
1 - draw two circles
2 - select either "2 Tangents and Radius" or "Point, 2 Tangents" to draw a third circle
Now I want to remove the outside section of the third circle, so I pick the "Break out Segment" tool and click the corresponding section I wish to delete, but the whole circle disappears as if it were not intersecting the first two circles.
If instead I pick the "Divide" tool, and click the two intersections (under auto-snap) then I achieve the goal. So, the intersections do exist, but do not seem to be recognized as such by the "Break out Segment" tool...
I am including the test file in case (Win7 - 64)
Circle tools
Moderator: andrew
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Always indicate your operating system and QCAD version.
Attach drawing files and screenshots.
Post one question per topic.
Always indicate your operating system and QCAD version.
Attach drawing files and screenshots.
Post one question per topic.
Re: Circle tools
However, "Auto trim" seems to do this action correctly...to remove the outside section of the third circle
If the 3rd circle has a true intersection (not tangential), then the "Beak out segment" tool works as usual.
JJ Win7 pro-64
Re: Circle tools
Hi J-J
I seem to remember a similar problem elsewhere in the bugtracker.
Unless Andrew changes things so that this 'Break-out' tool recognizes intersections of two touching Circles, I would think that the Autotrim tool is the one to use. Circles are 'tricky' little fellows. In principle you could say a Circle has infinite points and angles - these infinite points are equidistant from one point being the center! So all these points do effectively make up a continuous line or a better description would be a continuous closed curve around a center.
Confused yet
It is probably better to have an additional tool to 'break-out' an arc within a Circle, this way we can pick the starting and end points and break the arc in between.
what do you think?
Using your actual draft, for now if you pick a point more or less opposite the arc you wish to keep it should break out the rest.
Before...picking an opposite point.
After.
I seem to remember a similar problem elsewhere in the bugtracker.
Unless Andrew changes things so that this 'Break-out' tool recognizes intersections of two touching Circles, I would think that the Autotrim tool is the one to use. Circles are 'tricky' little fellows. In principle you could say a Circle has infinite points and angles - these infinite points are equidistant from one point being the center! So all these points do effectively make up a continuous line or a better description would be a continuous closed curve around a center.
Confused yet
It is probably better to have an additional tool to 'break-out' an arc within a Circle, this way we can pick the starting and end points and break the arc in between.
what do you think?
Using your actual draft, for now if you pick a point more or less opposite the arc you wish to keep it should break out the rest.
Before...picking an opposite point.
After.
For the best support please state your operating system, QCAD version and add any supporting DXF/DWG files, screenshots etc...
Re: Circle tools
Hi Clive,
In order for the "break segment" to operate, one must materialize the tangent point with an intersecting line. No big deal anyway, it was more out of curiosity why this was working!
In order for the "break segment" to operate, one must materialize the tangent point with an intersecting line. No big deal anyway, it was more out of curiosity why this was working!
JJ Win7 pro-64
Re: Circle tools
Thanks J-J.
I still think it would be good to have a break out tool dedicated to breaking out arcs, so I have added a feature request for this:
http://www.ribbonsoft.com/bugtracker/in ... ask_id=964
I still think it would be good to have a break out tool dedicated to breaking out arcs, so I have added a feature request for this:
http://www.ribbonsoft.com/bugtracker/in ... ask_id=964
For the best support please state your operating system, QCAD version and add any supporting DXF/DWG files, screenshots etc...