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IDProjectCategoryView StatusDate SubmittedLast Update
0024418Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2013-11-29 11:212018-11-02 10:28
Reporteremv 
Assigned Tonbv 
PrioritynormalSeverityminor 
StatusassignedResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 6.6.0 
Target Version[OCCT] 7.4.0*Fixed in Version 
Summary0024418: Wrong section curves when intersecting analytical surfaces
DescriptionThe intersection algorithm produces wrong section curves in the following test cases:
boolean bfuse_complex E6, F8
bugs modalg_2 bug20964_*
draft angle F9
Steps To Reproduce1. test bugs modalg_2 bug20964_1
brestore [locate_data_file OCC20964_revsolid.brep] b1
brestore [locate_data_file OCC20964_sphere.brep] b2
explode b1 f; copy b1_7 b1
explode b2 f; copy b2_1 b2
mksurface s1 b1
mksurface s2 b2
trimv s1t s1 0 230.14184397163115

# Sphere + Cylinder

intersect ii s1t s2
# 3 curves

bounds ii_2 u1 u2
xdistcs ii_2 s1 u1 u2 10 2.0e-7
# Max distance = 3.2632852455436544e-006

xdistcs ii_2 s2 u1 u2 10 2.0e-7
# Max distance = 0.01375619471412208

2. test draft angle F9
ptorus b1 25 24 90
plane p 20 20 10 0 0 1
pcone b2 p 10 8 40
explode b1 f; copy b1_1 b1
explode b2 f; copy b2_1 b2
mksurface s1 b1
mksurface s2 b2
trimu s1t s1 0 1.5707963267948966
trimv s2t s2 0 40.049968789001575
intersect ii s1t s2t

bounds ii_1 u1 u2
xdistcs ii_1 s1 u1 u2 10 2.0e-7
# Max distance = 4.0530416013101348e-006

xdistcs ii_1 s2 u1 u2 10 2.0e-7
# Max distance = 1.7347713433437292e-005

3.
Test case bugs modalg_5 bug25715_3
TagsNo tags attached.
Test case numberbugs modalg_7 bug24418_1, bug24418_2
Attached Filespng file icon 001.png (12,063 bytes) 2014-12-22 12:08

- Relationships
related to 0024299closedemv Open CASCADE Wrong section curve 
related to 0025404closednbv Open CASCADE Even for analytical surfaces (cylinder-cylinder) intersection result is not commutative 
related to 0025542verifiedbugmaster Community Boolean operation failure for Cylinder and Cone in critical location. 
related to 0024772assignednbv Community Intersection of cylinder and cone produces incorrect results 
related to 0025956assignednbv Open CASCADE Wrong result obtained by intersection algorithm. 
child of 0024094closedbugmaster Community Issure by option of BRepAlgoAPI_Section 

-  Notes
(0036091)
nbv (developer)
2015-01-15 11:49

 Dear msv.

I think, it is better for us to fix in this bugs some problems with ANALYTICAL intersection only.

Therefore, it is not worth bug # 25416 being related to this
(0064281)
nbv (developer)
2017-03-13 17:05

 Steps To Reproduce has been updated according to its behavior on the current state of OCCT developer version.
(0071931)
mkv (tester)
2017-11-02 12:24

 Problem is reproduced on the current master.

- Issue History
Date Modified Username Field Change
2013-11-29 11:21 emv New Issue
2013-11-29 11:21 emv Assigned To => nbv
2013-11-29 11:27 emv Status new => assigned
2013-11-29 11:27 emv Description Updated View Revisions
2013-11-29 11:27 emv Steps to Reproduce Updated View Revisions
2013-11-29 11:27 emv Relationship added child of 0024094
2013-11-29 11:28 emv Relationship added related to 0024299
2013-12-02 15:11 emv Relationship added related to 0024427
2014-05-28 17:20 nbv Relationship added related to 0024915
2014-09-12 13:01 abv Target Version => 7.1.0
2014-10-21 11:14 nbv Relationship added related to 0025404
2014-12-22 12:07 emv Steps to Reproduce Updated View Revisions
2014-12-22 12:08 emv File Added: 001.png
2015-01-15 11:23 emv Relationship added related to 0025709
2015-01-15 11:32 msv Relationship added related to 0025416
2015-01-15 11:33 nbv Summary Wrong section curves => Wrong section curves when intersecting analytical surfaces
2015-01-15 11:49 nbv Note Added: 0036091
2015-01-15 11:49 nbv Relationship deleted related to 0025416
2015-01-21 15:25 nbv Relationship added related to 0025715
2015-01-28 09:33 nbv Steps to Reproduce Updated View Revisions
2015-07-16 09:23 nbv Relationship added related to 0025542
2016-10-25 19:04 msv Target Version 7.1.0 => 7.2.0
2017-03-02 15:31 nbv Relationship added related to 0028503
2017-03-13 17:05 nbv Note Added: 0064281
2017-03-13 17:05 nbv Steps to Reproduce Updated View Revisions
2017-07-24 09:22 msv Target Version 7.2.0 => 7.3.0
2017-11-02 12:24 mkv Test case number => bugs modalg_7 bug24418_1, bug24418_2
2017-11-02 12:24 mkv Note Added: 0071931
2017-12-05 17:08 msv Target Version 7.3.0 => 7.4.0*
2018-06-19 13:10 nbv Relationship added related to 0024772
2018-06-20 14:05 nbv Relationship deleted related to 0028503
2018-07-09 10:50 nbv Steps to Reproduce Updated View Revisions
2018-11-02 10:28 nbv Relationship added related to 0025956

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