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IDProjectCategoryView StatusDate SubmittedLast Update
0028696Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2017-04-28 09:502017-12-05 16:59
Reportermsv 
Assigned Tomsv 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 7.1.0 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0028696: Offset 2D algorithm produces micro edges
DescriptionThis use case is given from the test bugs modalg_1 bug16667_3. From initial well defined wire consisting of 8 smoothly connected edges the command mkoffset produces a wire with 10 edges, two of which are too small according to ValidRange criteria (see BRepLib::FindValidRange).
The snapshot shows the initial wire and the result with orientations of edges.
Steps To Reproducetest bugs modalg_1 bug16667_3
test bugs modalg_1 bug16667_4

# check that all edges have enough length
foreach e [explode result e] {
  if {[validrange $e] == "edge has no valid range"} {
    regexp {Mass : *([0-9\-+.eE]+)} [lprops $e] dummy len
    regexp {Tolerance MAX=([0-9\-+.eE]+)} [tolerance r_1] dummy tol
    puts "Error: edge $e (lenth=$len, tolerance=$tol) is too small"
  }
}
TagsNo tags attached.
Test case numberbugs modalg_7 bug28696_1, bug28696_2
Attached Filespng file icon wire_n_offset.PNG (7,165 bytes) 2017-04-28 09:50

- Relationships

-  Notes
(0065630)
msv (developer)
2017-04-28 10:04

The same bug is in test case
bugs modalg_1 bug16667_4
(0070002)
apv (tester)
2017-08-28 17:14

Problem described in issue is reproduced on current state of OCCT.

- Issue History
Date Modified Username Field Change
2017-04-28 09:50 msv New Issue
2017-04-28 09:50 msv Assigned To => msv
2017-04-28 09:50 msv File Added: wire_n_offset.PNG
2017-04-28 09:51 msv Relationship added related to 0023731
2017-04-28 10:04 msv Note Added: 0065630
2017-04-28 10:04 msv Steps to Reproduce Updated View Revisions
2017-07-24 09:22 msv Target Version 7.2.0 => 7.3.0
2017-08-28 17:14 apv Test case number => bugs modalg_7 bug28696_1, bug28696_2
2017-08-28 17:14 apv Note Added: 0070002
2017-12-05 16:59 msv Target Version 7.3.0 => 7.4.0*


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