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IDProjectCategoryView StatusDate SubmittedLast Update
0028687Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2017-04-25 17:242017-12-05 17:01
Reporternbv 
Assigned Tomsv 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0028687: Offset for open wire is built with incorrect direction
DescriptionIf the source wire is oriented correctly then the offset direction must be on the left side from the wire direction if offset value is negative and on the right side in case of positive offset value.

However, in some cases, this rule is not satisfied (see Steps To Reproduce).
Steps To Reproduce    CASE # 1 (test bugs modalg_6 bug26296_5):

restore [locate_data_file bug26296_linesarc.brep] a
vori a
openoffset res a 1 6. i
# See Case 1.PNG

    CASE # 2 (bugs modalg_5 bug25334_9):
restore [locate_data_file bug25334_faceProlongationCrash1.brep] a
explode a e
wire ww a_3 a_4
donly ww
vori ww
openoffset res ww 1 10
# See Case 2.PNG

    CASE # 3 (bugs modalg_5 bug25334_4):
restore [locate_data_file bug25334_faceProlongationCrash1.brep] a
explode a e
wire ww a_3
donly ww
vori ww
openoffset res ww 1 -10
# See Case 3.PNG
TagsNo tags attached.
Test case number
Attached Filespng file icon Case 1.PNG (14,601 bytes) 2017-04-25 17:24
png file icon Case 2.PNG (12,856 bytes) 2017-04-25 17:24
png file icon Case 3.PNG (13,028 bytes) 2017-04-25 17:24

- Relationships

-  Notes
(0065516)
nbv (developer)
2017-04-25 17:46

Cases ## 1 and 2 are reproduced on the current MASTER. Fix for the issue 0028677 solves this problem particularly. However, CASE # 3 is failed even after 0028677 will be fixed. The possible reason is in hard code in KPartCircle(...) function (see src\BRepFill\BRepFill_OffsetWire.cxx).

- Issue History
Date Modified Username Field Change
2017-04-25 17:24 nbv New Issue
2017-04-25 17:24 nbv Assigned To => msv
2017-04-25 17:24 nbv File Added: Case 1.PNG
2017-04-25 17:24 nbv File Added: Case 2.PNG
2017-04-25 17:24 nbv File Added: Case 3.PNG
2017-04-25 17:46 nbv Note Added: 0065516
2017-07-24 09:22 msv Target Version 7.2.0 => 7.3.0
2017-12-05 17:01 msv Target Version 7.3.0 => 7.4.0*


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