- Status Closed
- Percent Complete
- Task Type Bug Report
- Category QCAD (main)
-
Assigned To
Andrew - Operating System Windows 7
- Severity Low
- Priority Very Low
- Reported Version 3.9.3
- Due in Version Undecided
-
Due Date
Undecided
- Votes
- Private
Opened by ravas - 15.05.2015
Last edited by Andrew - 15.05.2015
FS#1213 - point of tangency precision error
- using the Polygon (2 points of side) tool create a triangle based on points 0,0 and 10,0
- using the 3 Tangents tool create the incircle of the triangle
- measure from each vertex to each point of tangency
Instead of getting 5 as a result for each you get either 4.99999993, 5.0000001 or 5.00000007.
Dongxu Li says:
“the problem is that inscribed circle is generated correct up to relative precision of 1e-8, while the tangential points are test at a precision level of 1e-10. Therefore, the inscribed circle actually intersects with one line.”
https://github.com/LibreCAD/LibreCAD/issues/523
I have marked this as critical because I work with tangent circles a lot, and need these measurements to be accurate.
qcad_precision_error.png
15.05.2015 08:06
Reason for closing: Won't fix
Additional comments about closing:
Precision error within expected
range.