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0027569: [Regression in 6.9.0] Projecting a curve hangs

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Parameterization speed is taken into account to avoid ProjLib projector usage in case of bad input data.
Test case is added.
Test cases correction.
This commit is contained in:
aml
2016-06-09 14:38:04 +03:00
committed by bugmaster
parent f117cc5a81
commit 6728599615
3 changed files with 39 additions and 6 deletions
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11
src/ShapeConstruct/ShapeConstruct_ProjectCurveOnSurface.cxx
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@@ -289,7 +289,7 @@ Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::Perform (Handle(Geom_Curv
}
GeomAdaptor_Curve aC3DAdaptor(c3d);
Standard_Real aMinParSpeed = Precision::Infinite(); // Minimal parameterization speed.
for(; anIdx <= bspl->NbKnots() && aFirstParam < Last; anIdx++)
{
// Fill current knot interval.
@@ -320,8 +320,12 @@ Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::Perform (Handle(Geom_Curv
{
Standard_Real aParam = aFirstParam + aStep * anIntIdx;
aC3DAdaptor.D0 (aParam, p3d2);
aLength3d += p3d2.Distance(p3d1);
const Standard_Real aDist = p3d2.Distance(p3d1);
aLength3d += aDist;
p3d1 = p3d2;
aMinParSpeed = Min(aMinParSpeed, aDist / aStep);
}
const Standard_Real aCoeff = aLength3d / (aLastParam - aFirstParam);
if (Abs(aCoeff) > gp::Resolution())
@@ -337,7 +341,8 @@ Standard_Boolean ShapeConstruct_ProjectCurveOnSurface::Perform (Handle(Geom_Curv
}
const Standard_Real aMaxQuotientCoeff = 1500.0;
if (anEvenlyCoeff > aMaxQuotientCoeff)
if (anEvenlyCoeff > aMaxQuotientCoeff &&
aMinParSpeed > Precision::Confusion() )
{
PerformByProjLib(c3d, First, Last, c2d);
// PerformByProjLib fail detection: