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0030703: Modeling Algorithms - Intersector returns overlapping curves

Browse Source 
IntPatch/IntPatch_ImpPrmIntersection.cxx - calculation of step depending on resolution of surface

IntWalk_IWalking_6.gxx - calculation of point-line coincidence is improved

Correction of tests according to current results

lowalgos/intss/bug30703 - new test case added
This commit is contained in:
ifv
2020-11-05 15:28:17 +03:00
committed by bugmaster
parent 9ab58ebf65
commit 9a640cbe72
8 changed files with 76 additions and 13 deletions
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33
src/IntPatch/IntPatch_ImpPrmIntersection.cxx
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@@ -585,6 +585,37 @@ void IntPatch_ImpPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Sur
break;
}
//
Standard_Real aLocalPas = Pas;
GeomAbs_SurfaceType aSType = reversed ? Surf1->GetType() : Surf2->GetType();
if (aSType == GeomAbs_BezierSurface || aSType == GeomAbs_BSplineSurface)
{
Standard_Real aMinRes = Precision::Infinite();
GeomAbs_Shape aCont = GeomAbs_C0;
Standard_Integer aMaxDeg = 0;
const Standard_Real aLimRes = 1.e-10;
if (reversed)
{
aMinRes = Min(Surf1->UResolution(Precision::Confusion()),
Surf1->VResolution(Precision::Confusion()));
aCont = (GeomAbs_Shape)Min(Surf1->UContinuity(), Surf1->VContinuity());
aMaxDeg = Max(Surf1->UDegree(), Surf1->VDegree());
}
else
{
aMinRes = Min(Surf2->UResolution(Precision::Confusion()),
Surf2->VResolution(Precision::Confusion()));
aCont = (GeomAbs_Shape)Min(Surf2->UContinuity(), Surf2->VContinuity());
aMaxDeg = Max(Surf2->UDegree(), Surf2->VDegree());
}
if (aMinRes < aLimRes && aCont > GeomAbs_C0 && aMaxDeg > 3)
{
aLocalPas = Min(Pas, 0.0001);
}
}
Func.SetImplicitSurface(Quad);
Func.Set(IntSurf_QuadricTool::Tolerance(Quad));
AFunc.SetQuadric(Quad);
@@ -686,7 +717,7 @@ void IntPatch_ImpPrmIntersection::Perform (const Handle(Adaptor3d_HSurface)& Sur
NbPointDep=seqpdep.Length();
//
if (NbPointDep || NbPointIns) {
IntPatch_TheIWalking iwalk(TolTang, Fleche, Pas);
IntPatch_TheIWalking iwalk(TolTang, Fleche, aLocalPas);
iwalk.Perform(seqpdep, seqpins, Func, reversed ? Surf1 : Surf2, reversed);
if(!iwalk.IsDone()) {