#### View Issue Details

ID Project Category View Status Date Submitted Last Update 0025368 Community OCCT:Modeling Algorithms public 2014-10-14 15:48 2014-11-12 09:53 shoogen bugmaster normal minor closed fixed Linux Debian 6.0 6.7.1 6.8.0 6.8.0 0025368: BREPExtrma DistShapeShape gives wrong result for Sphere and Line I want to get the the intersection point of a Face (or Shell) and a Line. This works well with cylindrical and conical surfaces. But for a sphere there is always a non-zero distance reported, even thou there is an intersection. No tags attached. bugs modalg_5(010) bug25368_1, bug25368_2

#### Attached Files

 sphere-edge-solution.png (30,559 bytes)

#### Activities

 2014-10-14 15:57 reporter   ~0033069 Always was the wrong word. The result for the sphere is correct at it poles. 2014-10-14 23:50 reporter   ~0033090 Last edited: 2014-10-14 23:59 the sympton is that the result should include Face/Edge solution, which it does not. psphere Sphere 5 -90 90 360 polyline Line 0 0 0.2 10 10 0.2 #i haven't yet found out how to reproduce in DRAWEXE >>> e=doc.Line.Shape.Edges[0] >>> s=doc.Sphere.Shape.Shells[0] >>> e.distToShape(s) # # distance 3.5298725189445594 # solution1 (Vector (2.4919871588754225, 2.4919871588754225, 0.2), Vector (4.983974317750845, -1.220721639053237e-15, 0.40000000000000024)) # support geom [('Edge', 0, 3.524202037341219, 'Edge', 1, 6.363270887213245)]) 2014-10-15 00:11 reporter sphere-edge-solution.png (30,559 bytes) 2014-10-15 00:39 reporter   ~0033091 Last edited: 2014-10-15 00:59 I tried > psphere Sphere 5 -90 90 360 > polyline Line 0 0 0.2 10 10 0.2 > explode Sphere Sh > explode Line E > dist Line_1 Sphere_1 #did not return a result > distmini d Line_1 Sphere_1 the distance value is : 3.52987 the number of solutions is :1 solution number 1: the type of the solution on the first shape is 1 the type of the solution on the second shape is 1 the coordinates of the point on the first shape are: X=2.49199 Y=2.49199 Z=0.2 the coordinates of the point on the second shape are: X=4.98397 Y=-1.22072e-15 Z=0.4 parameter on the first edge : t= 3.5242 parameter on the second edge : t=6.36327 d_val d 2014-10-24 09:46 administrator   ~0033670 Branch CR25368 has been created by aml. SHA-1: 95e6c80273613fe712dd7e64f2680a9c7f82e68e Detailed log of new commits: Author: aml Date: Fri Oct 24 07:44:40 2014 +0400     0025368: BREPExtrma DistShapeShape gives wrong result for Sphere and Line          Changed analytical Sphere/Line extrema algorithm.     Test cases added. aml 2014-10-24 09:50 developer   ~0033671 Dear ifv, Please check current state of branch CR25368. Fixed analytical extrema sphere / line algorithm. ifv 2014-10-24 10:16 developer   ~0033674 1. There is class, which intersects line and sphere, so it i9s not necessary to write new code in Extrema algo. 2. I think, bechaviour of analitycal Extrema must remain unchanged, intersector algo it is better to use on level of BRepExtrema. 2014-10-27 13:40 administrator   ~0033719 Branch CR25368 has been updated forcibly by aml. SHA-1: 8177fdd552646c6cd19d1088eae51041af85adec aml 2014-10-27 13:45 developer   ~0033720 Dear ifv, Please check current state of branch CR25368. ifv 2014-10-27 16:02 developer   ~0033732 Ok apv 2014-10-28 16:23 tester   ~0033777 Dear BugMaster, Branch CR25368 (and products from GIT master) was compiled on Linux, MacOS and Windows platforms and tested. SHA-1: 8177fdd552646c6cd19d1088eae51041af85adec Number of compiler warnings: occt component:    Linux: 18 (18 on master)    Windows: 0 (0 on master) products component:    Linux: 11 (11 on master)    Windows: 1 (1 on master) Regressions/Differences: Not detected Testing cases: bugs modalg_5(010) bug25368_1 - OK http://occt-tests/CR25368-master-occt/Debian60-64/bugs/modalg_5/bug25368_1.html http://occt-tests/CR25368-master-occt/Windows-32-VC10/bugs/modalg_5/bug25368_1.html bugs modalg_5(010) bug25368_2 - OK http://occt-tests/CR25368-master-occt/Debian60-64/bugs/modalg_5/bug25368_2.html http://occt-tests/CR25368-master-occt/Windows-32-VC10/bugs/modalg_5/bug25368_2.html Testing on Linux: Total MEMORY difference: 371838292 / 371808660 Total CPU difference: 47225.109999999935 / 48296.64000000005 Testing on Windows: Total MEMORY difference: 276412396 / 273080016 Total CPU difference: 38675.0 / 37050.71875 2014-11-12 09:53 administrator   ~0034321 Branch CR25368 has been deleted by inv. SHA-1: 8177fdd552646c6cd19d1088eae51041af85adec

#### Related Changesets

 occt: master db914841 2014-10-24 03:44:40 aml Committer: bugmaster 0025368: BREPExtrma DistShapeShape gives wrong result for Sphere and Line Changed analytical Sphere/Line and Cylinder/Line extrema algorithms. Now they search perpendicular and intersection points. Test cases added. Affected Issues0025368 mod - src/Extrema/Extrema_ExtElCS.cxx add - tests/bugs/modalg_5/bug25368_1 add - tests/bugs/modalg_5/bug25368_2

#### Issue History

2014-10-14 15:48 shoogen New Issue
2014-10-14 15:48 shoogen Assigned To => ifv
2014-10-14 15:57 shoogen Note Added: 0033069
2014-10-14 16:09 ifv Assigned To ifv => aml
2014-10-14 16:10 ifv Status new => assigned
2014-10-14 23:50 shoogen Note Added: 0033090
2014-10-14 23:59 shoogen Note Edited: 0033090
2014-10-15 00:11 shoogen File Added: sphere-edge-solution.png
2014-10-15 00:39 shoogen Note Added: 0033091
2014-10-15 00:59 shoogen Note Edited: 0033091
2014-10-24 09:46 git Note Added: 0033670
2014-10-24 09:50 aml Note Added: 0033671
2014-10-24 09:50 aml Assigned To aml => ifv
2014-10-24 09:50 aml Status assigned => resolved
2014-10-24 10:16 ifv Note Added: 0033674
2014-10-24 10:16 ifv Status resolved => feedback
2014-10-27 10:49 aml Assigned To ifv => aml
2014-10-27 13:40 git Note Added: 0033719
2014-10-27 13:45 aml Note Added: 0033720
2014-10-27 13:45 aml Assigned To aml => ifv
2014-10-27 13:45 aml Status feedback => resolved
2014-10-27 16:02 ifv Note Added: 0033732
2014-10-27 16:02 ifv Assigned To ifv => bugmaster
2014-10-27 16:02 ifv Status resolved => reviewed
2014-10-27 18:12 apv Assigned To bugmaster => apv
2014-10-28 16:20 apv Test case number => bugs modalg_5(010) bug25368_1, bug25368_2
2014-10-28 16:23 apv Note Added: 0033777
2014-10-28 16:23 apv Assigned To apv => bugmaster
2014-10-28 16:23 apv Status reviewed => tested
2014-10-30 10:17 bugmaster Target Version => 6.8.0
2014-10-31 14:03 bugmaster Changeset attached => occt master db914841
2014-10-31 14:03 bugmaster Status tested => verified
2014-10-31 14:03 bugmaster Resolution open => fixed
2014-11-11 12:43 aiv Fixed in Version => 6.8.0
2014-11-11 13:03 aiv Status verified => closed
2014-11-12 09:53 git Note Added: 0034321