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IDProjectCategoryView StatusDate SubmittedLast Update
0028593Community[OCCT] OCCT:Modeling Algorithmspublic2017-03-25 10:402017-12-05 17:09
ReporterRoman Lygin 
Assigned Tonbv 
PrioritynormalSeverityminor 
StatusassignedResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 7.1.0 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0028593: Plane/Cylinder intersection produces incorrect result
DescriptionIntersection of plane/cylinder produces two lines where one is Geom_TrimmedCurve with length 3e-9.
Data comes from a real-world file.
Steps To ReproduceIn DRAW:
restore surface1 s1
restore surface2 s2
intersect res s1 s2
dump res_1

*********** Dump of res_1 *************
Trimmed curve
Parameters : 35424.6081985153 35424.6081985182
Basis curve :
Line
  Origin :37.2418646548906, 67.708405, -3.26809014082305
  Axis :0.999168886158635, -1.42108547152022e-16, -0.0407619544736619



TagsNo tags attached.
Test case number
Attached Fileszip file icon surf.zip (457 bytes) 2017-03-25 10:40

- Relationships

-  Notes
(0064699)
Roman Lygin (developer)
2017-03-25 10:43

Just another test case to the list of open issues related to analytical surface-surface intersection:
0024772, 0024429, 0023166, 0023163, 0023176, 0023177
(0064702)
msv (developer)
2017-03-27 09:58

Dear Nikolay, please look at it when you have time.
(0064703)
nbv (developer)
2017-03-27 10:36

Most probable reason of the issue is not precise computation of IntPatch_Points for geometric lines (circle, ellipse etc.) in IntStart_SearchOnBoundaries.gxx file.

Some improvements and problem description were done in frame of the issue 0027252.

Good fix of this situation requires real time (quite much time).

- Issue History
Date Modified Username Field Change
2017-03-25 10:40 Roman Lygin New Issue
2017-03-25 10:40 Roman Lygin Assigned To => msv
2017-03-25 10:40 Roman Lygin File Added: surf.zip
2017-03-25 10:43 Roman Lygin Note Added: 0064699
2017-03-27 09:58 msv Note Added: 0064702
2017-03-27 09:58 msv Assigned To msv => nbv
2017-03-27 09:58 msv Status new => assigned
2017-03-27 10:36 nbv Note Added: 0064703
2017-07-21 11:22 msv Target Version 7.2.0 => 7.3.0
2017-12-05 17:09 msv Target Version 7.3.0 => 7.4.0*


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