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0027493: [Regression relative to OCCT 7.0.0] Extrema_ExtCC does not set flag "IsParallel" equal to true for the overlapped curves

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Check for infinite solutions now starts from two solutions.
Test case is added.
This commit is contained in:
aml 2016-05-17 07:24:57 +03:00 committed by bugmaster
parent 264abd72f2
commit e64622331f
2 changed files with 26 additions and 2 deletions
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3
src/Extrema/Extrema_GenExtCC.gxx
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@ -335,8 +335,7 @@ void Extrema_GenExtCC::Perform()
// Avoid mark parallel case when have duplicates out of tolerance.
// Bad conditioned task: bug25635_1, bug23706_10, bug23706_13.
const Standard_Integer aMinNbInfSol = 100;
if (aPnts.Size() >= aMinNbInfSol)
if (aPnts.Size() >= 2)
{
isParallel = Standard_True;
for(Standard_Integer anIdx = aPnts.Lower(); anIdx <= aPnts.Upper() - 1; anIdx++)

25
tests/bugs/moddata_3/bug27493 Normal file
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@ -0,0 +1,25 @@
puts "============"
puts "OCC27493"
puts "============"
puts ""
#########################################################################
# [Regression relative to OCCT 7.0.0] Extrema_ExtCC does not set flag "IsParallel" equal to true for the overlapped curves
#########################################################################
restore [locate_data_file bug27493.brep] anEdges
explode anEdges
mkcurve c1 anEdges_1
mkcurve c2 anEdges_2
# Check infinite solutions flag value
set info [extrema c1 c2]
if { [regexp "Infinite number of extremas" ${info}] != 1 } {
puts "Error : Infinite solution flag have incorrect value"
}
# Check extrema distance
regexp {distance = +([-0-9.+eE]+)} $info full aDist
set absTol 1.0e-9
set relTol 0.001
set aDist_Exp 0.0
checkreal "Distance value check" $aDist $aDist_Exp $absTol $relTol