0025925: BRepOffset_MakeOffset works unstable for faces containing seam edges

ID	Project	Category	View Status	Date Submitted	Last Update

0025925	Open CASCADE	OCCT:Modeling Algorithms	public	2015-03-13 10:30	2018-07-02 10:41

Reporter	~~msv~~	Assigned To	~~emv~~
Priority	normal	Severity	minor
Status	assigned	Resolution	open
Product Version	6.9.0
Target Version	Unscheduled

Summary	0025925: BRepOffset_MakeOffset works unstable for faces containing seam edges
Description	The algorithm of offset shape (BRepOffset_MakeOffset) works unstable when a shape contains a face with seam edge. The cause of the issue is that the algorithm used to make loops of new faces from offset edges (BRepAlgo_Loop) cannot correctly work when on input it has a seam edge in the set of edges, and this edge occurs to be the starting of the loop. It is proposed to use instead another more stable algorithm of building loops that is used in new Boolean operations.
Steps To Reproduce	bugs modalg_2 bug5805_19,bug5805_41,bug5805_42,bug5805_43 offset faces_type_a A3,A4,A9
Tags	No tags attached.

Test case number

Date Modified	Username	Field	Change
2015-03-13 10:30	~~msv~~	New Issue
2015-03-13 10:30	~~msv~~	Assigned To	=> msv
2015-03-13 12:17	~~msv~~	Note Added: 0038315
2015-03-13 12:17	~~msv~~	Assigned To	msv => emv
2015-03-13 12:17	~~msv~~	Status	new => assigned
2018-07-02 10:41	~~msv~~	Note Added: 0077186

~~msv~~ 2015-03-13 12:17 developer ~0038315	Dear emv, please check the state of this bug after development of related #25926.

~~msv~~ 2018-07-02 10:41 developer ~0077186	The test cases offset faces_type_a A3,A4,A9 became OK with the patch for #29861.