Hi all,
I am using the Modify - Offset (with Distance) function to outset this polygon by 10 mm:
However, the result is not as expected - note the gap in the lower right corner:
Can anyone tell me, what causes this gap? To my best knowledge the original polygon consists of one continuous line - when hovering over it, one can see, that the complete polygon is selected. Therefore I don't understand what causes this strange result. For me it looks like the original polygon is somehow discontinuous, but I can't see how this should be the case.
The dfx file (with only the original polygon) is attached.
Operating system: Windows 10 x64
QCAD version: Qcad Pro 3.19.2
Thanks for any hint on this!
[solved] Offset path is incomplete
Moderator: andrew
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[solved] Offset path is incomplete
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Last edited by yetanotheruser on Tue Jan 02, 2018 2:24 pm, edited 1 time in total.
Re: Offset path is incomplete
Did you uncheck "Clipping" in the option bar?
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Win10/64, QcadPro, QcadCam version: Current.
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Win10/64, QcadPro, QcadCam version: Current.
If a thread is considered as "solved" please change the title of the first post to "[solved] Title..."
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Re: Offset path is incomplete
Thanks, that was it - after unchecking this option everything worked as expected
Can you tell me when this option is useful and when not? What's the intention behind this function?
The clipping option is actually not mentioned in the Offset documentation ):
https://qcad.org/doc/qcad/latest/refere ... ro_en.html
Can you tell me when this option is useful and when not? What's the intention behind this function?
The clipping option is actually not mentioned in the Offset documentation ):
https://qcad.org/doc/qcad/latest/refere ... ro_en.html
Re: Offset path is incomplete
Gaps are usually caused by tolerance issues. These tend to occur if a polyline contains arc segments with very large radii as is here the case.
A potential solution (other than turning off clipping) might be to straighten all arc segments into line segments using Draw > Polyline > Arc to Line Segments.
A potential solution (other than turning off clipping) might be to straighten all arc segments into line segments using Draw > Polyline > Arc to Line Segments.
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Re: Offset path is incomplete
Thanks for the explanation and alternative workaroundandrew wrote:Gaps are usually caused by tolerance issues. These tend to occur if a polyline contains arc segments with very large radii as is here the case.
A potential solution (other than turning off clipping) might be to straighten all arc segments into line segments using Draw > Polyline > Arc to Line Segments.