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IDProjectCategoryView StatusLast Update
0028279CommunityOCCT:Modeling Algorithmspublic2021-08-29 18:51
ReporterRoman Lygin Assigned Tomsv  
PrioritynormalSeverityminor 
Status newResolutionopen 
Product Version7.1.0 
Target Version7.7.0 
Summary0028279: Greater oscillations and higher degree of resulting B-Spline in cylinder-cylinder intersections in 7.1.0
DescriptionIn 7.1.0 the surface-surface intersection algorithm produces resulting B-Spline curve which is somewhat greater distorted and has higher degree comparing to 7.0.
See screenshots.

This can be a consequence of the fix of 0023178.

It is impossible to claim the result is worse than in 7.0.0 (i.e. a regression) as there can be other factors to be taken into account (greater number of sampling points in the marching algorithm, etc). So this is rather a FYI for the OCC team to double-check as needed.
Steps To ReproduceIn both 7.0 and 7.1:
intersect r s1 s2
and zoom the result
TagsNo tags attached.
Test case numberbugs modalg_7 bug28279

Attached Files

  • 1010.zip (390 bytes)
  • occ710_screenshot.png (21,453 bytes)
  • occ700_screenshot.png (25,166 bytes)

Relationships

related to 0023178 closedapn Intersection of cylinders fails to produce results 

Activities

Roman Lygin

2016-12-24 12:58

developer  

1010.zip (390 bytes)

Roman Lygin

2016-12-24 12:58

developer  

occ710_screenshot.png (21,453 bytes)

Roman Lygin

2016-12-24 12:58

developer  

occ700_screenshot.png (25,166 bytes)

mkv

2017-08-28 16:55

tester   ~0069997

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

Issue History

Date Modified Username Field Change
2016-12-24 12:58 Roman Lygin New Issue
2016-12-24 12:58 Roman Lygin Assigned To => msv
2016-12-24 12:58 Roman Lygin File Added: 1010.zip
2016-12-24 12:58 Roman Lygin File Added: occ710_screenshot.png
2016-12-24 12:58 Roman Lygin File Added: occ700_screenshot.png
2016-12-24 12:59 Roman Lygin Relationship added related to 0023178
2017-07-21 11:22 msv Target Version 7.2.0 => 7.3.0
2017-08-28 16:55 mkv Test case number => bugs modalg_7 bug28279
2017-08-28 16:55 mkv Note Added: 0069997
2017-12-05 16:59 msv Target Version 7.3.0 => 7.4.0
2019-08-12 16:43 msv Target Version 7.4.0 => 7.5.0
2020-09-14 22:56 msv Target Version 7.5.0 => 7.6.0
2021-08-29 18:51 msv Target Version 7.6.0 => 7.7.0