helppyFormex - Support: sr #109155, How to join a PolyLine with an Arc?


sr #109155: How to join a PolyLine with an Arc?

Submitted by:  Klaus Burkart <klausb>
Submitted on:  Sat 01 Oct 2016 08:23:48 PM UTC  
Category:  Open discussion Priority:  5 - Normal
Severity:  3 - Normal Privacy:  Public
Assigned to:  None Open/Closed:  Open
Operating System:  GNU/Linux

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Sun 02 Oct 2016 10:15:08 AM UTC, comment #1: 

The problem is that you have the Arc Q oriented in clockwise direction, while the PolyLine B is counter-clockwise. As a result the concatenation of the curves jumps from the bottom (end of Qa) to the top layer (start of B).
You can just reverse one of the curves: Qa = Qa.reverse(), and it will work.

Hint: in detecting such problems, it is useful to display the vertex numbers: drawNumbers(Qb.coords) 

Hint2: you can use short notation Qa+B instead of Qa.append(B)

Benedict Verhegghe <bverheg>
Project Administrator
Sat 01 Oct 2016 08:23:48 PM UTC, original submission:  

I'd like to close a PolyLine with an Arc. I tried to replace the Arc by a PolyLine using approximate() and use append() to join the two Lines comprising the offset boundary without success.

append() seems to close one of the curves before append() is applied.

How can I join the curves?

Klaus Burkart <klausb>


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Attached Files
file #38639: added by klausb (2KiB - text/x-python)


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