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Archived issue #0023051

Bug in BRepExtrema_DistShapeShape (through BRepExtrema_DistanceSS)

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Description

The problem is reported by Author on OCCT User's forum at http://www.opencascade.org/org/forum/thread_23040:

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When computing the distance between a face or edge and a vertex, with the vertex as the second argument, PointOnShape1 and PointOnShape2 results are switched.

 This seems to have been introduced in 6.5.1 and persists in 6.5.2. In 6.5.2, the lines 735 & 736 need to be changed from:
 const BRepExtrema_SolutionElem Sol1(Dstmin,P1,BRepExtrema_IsOnEdge,S1,t);
 const BRepExtrema_SolutionElem Sol2(Dstmin,Pt,BRepExtrema_IsVertex,S2);
 to
 const BRepExtrema_SolutionElem Sol1(Dstmin,Pt,BRepExtrema_IsOnEdge,S1,t);
 const BRepExtrema_SolutionElem Sol2(Dstmin,P1,BRepExtrema_IsVertex,S2);

 and lines 851 and 852 need to be changed from:
 const BRepExtrema_SolutionElem Sol1(Dstmin,P1,BRepExtrema_IsInFace,S1,U,V);
 const BRepExtrema_SolutionElem Sol2(Dstmin,Pt,BRepExtrema_IsVertex,S2);
 to
 const BRepExtrema_SolutionElem Sol1(Dstmin,Pt,BRepExtrema_IsInFace,S1,U,V);
 const BRepExtrema_SolutionElem Sol2(Dstmin,P1,BRepExtrema_IsVertex,S2);

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Note that the problem with edge has been fixed already in #22758, while the problem with face is still there

Steps to reproduce

See attached script Attachment 2 (TCL)

Public activity

2 archived notes

Participants are labeled by their role within this record.

01Commenter 1
Fix integrated to branch CR23051; please test
02Commenter 1
Dear BugMaster,
     Workbench KAS:dev:apn-23051-occt was created from git branch CR23051 (and apn-23051-products from svn trunk) and compiled on Linux platform.
   
     There are not regressions in apn-23051-products regarding to KAS:dev:products-20120329-opt
  
     Test case for this fix is chl 934 X8. It's OK.
     
     See results in /QADisk/occttests/results/KAS/dev/apn-23051-products_02042012/lin
     See reference results in /QADisk/occttests/results/KAS/dev/products-20120329-opt_29032012/lin
     See test cases in /QADisk/occttests/tests/ED