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0027175: Intersection algorithm with increased tolerance works incorrect with some shapes

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1. Algorithm of coincidence check between Walking and Restriction line has been improved in IntPatch_ImpPrmIntersection.
2. Creation of test case for this issue.
This commit is contained in:
nbv 2016-03-09 09:54:42 +03:00 committed by bugmaster
parent 0d1536ad4e
commit 1fbf69bb21
2 changed files with 30 additions and 1 deletions
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2
src/IntPatch/IntPatch_ImpPrmIntersection.cxx
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@ -1572,7 +1572,7 @@ void IntPatch_ImpPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Sur
// Now slin is filled as follows: lower indices correspond to Restriction line,
// after (higher indices) - only Walking-line.
const Standard_Real aTol3d = Func.Tolerance();
const Standard_Real aTol3d = Max(Func.Tolerance(), TolTang);
const Handle(Adaptor3d_HSurface)& aQSurf = (reversed) ? Surf2 : Surf1;
const Handle(Adaptor3d_HSurface)& anOtherSurf = (reversed) ? Surf1 : Surf2;

29
tests/bugs/modalg_6/bug27175 Normal file
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@ -0,0 +1,29 @@
puts "================"
puts "OCC27175"
puts "================"
puts ""
#######################################################################
# Intersection algorithm with increased tolerance works incorrect with some shapes
#######################################################################
set ExpectTol 3.002046539399851e-006
set GoodNbCurv 2
plane pl 0.195808075898442 -0.229262227170656 4.05546403129991 0 0 1
psphere s1 pl 0.03101752454
restore [locate_data_file bug27128-Helix_Pipe.brep] s2
explode s1 f
explode s2 f
settolerance s1_1 2.0e-6
settolerance s2_2 2.0e-6
bopcurves s1_1 s2_2 -2d
regexp {Tolerance Reached=+([-0-9.+eE]+)\n+([-0-9.+eE]+)} [bopcurves s1_1 s2_2 -2d] full Toler NbCurv
checkreal "Tolerance Reached" ${Toler} ${ExpectTol} 0.0 0.1
if {${NbCurv} != ${GoodNbCurv}} {
puts "Error: Curve Number is bad!"
}