- Status Closed
- Percent Complete
- Task Type Feature Request
- Category QCAD (main)
-
Assigned To
Andrew - Operating System All
- Severity Low
- Priority Very Low
- Reported Version 3.4.5
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
Attached to Project: QCAD Bugtracker
Opened by Väinö Forss - 19.01.2014
Last edited by Andrew - 21.01.2014
Opened by Väinö Forss - 19.01.2014
Last edited by Andrew - 21.01.2014
FS#1012 - Make threshold from which arcs are approximated as lines configurable
Tried to draw a guitar and when drawing top arch (R=10600 mm), I noticed that when arc length is less than 5% (in ths case less than 530 mm) of arcs radius arc appears totally straight both in screen and print.
Data is stored right, details are right, reference points are right, snap on entity goes right, but the line appears totally straight.
I have iMac mid 2011 with Mavericks and latest Qcad.
Closed by Andrew
21.01.2014 14:17
Reason for closing: Implemented
Additional comments about closing:
21.01.2014 14:17
Reason for closing: Implemented
Additional comments about closing:
https://github.com/qcad/qcad/commit /3b4b9d9e6856d0156d173fdf4eabbe08f48e31b 2
This is expected geometric principle. Try manually using a compass and pencil you will get the same result with such short arc lengths.
To achieve what you need try using the spline tools, maybe the 'Fit to Points' option.
This is indeed expected behavior.
There is a threshold below which QCAD approximates arcs as straight lines.
I will change this report into a feature request to make that threshold configurable.