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0033567: Modeling Data - GeomLib_IsPlanarSurface raises exception SIGFPE Arithmetic Exception in Release mode

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Add protection against zero-division
This commit is contained in:
oan 2024-01-05 14:06:25 +00:00
parent beb4a7cfab
commit f11043a8e8
2 changed files with 32 additions and 15 deletions
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8
src/GeomLib/GeomLib_IsPlanarSurface.cxx
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@ -76,13 +76,18 @@ static Standard_Boolean Controle(const TColgp_Array1OfPnt& Poles,
Standard_Real umin, umax, vmin, vmax;
S->Bounds(umin, umax, vmin, vmax);
S->D1( (umin+umax)/2, (vmin+vmax)/2, P, DU, DV);
if (DU.SquareMagnitude() > gp::Resolution() &&
DV.SquareMagnitude() > gp::Resolution())
{
// On prend DX le plus proche possible de DU
gp_Dir du(DU);
Standard_Real Angle1 = du.Angle(DX);
Standard_Real Angle2 = du.Angle(DY);
if (Angle1 > M_PI/2) Angle1 = M_PI-Angle1;
if (Angle2 > M_PI/2) Angle2 = M_PI-Angle2;
if (Angle2 < Angle1) {
if (Angle2 < Angle1)
{
du = DY; DY = DX; DX = du;
}
if (DX.Angle(DU) > M_PI/2) DX.Reverse();
@ -94,6 +99,7 @@ static Standard_Boolean Controle(const TColgp_Array1OfPnt& Poles,
IsPlan = Standard_True;
}
}
}
return IsPlan;
}

11
tests/bugs/moddata_3/bug33567 Normal file
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@ -0,0 +1,11 @@
puts "==========================================================="
puts "0033567: Modeling Data - GeomLib_IsPlanarSurface raises SIGFPE in Release mode"
puts "==========================================================="
puts "REQUIRED All: Conversion failed"
pload MODELING
restore [locate_data_file bug33567.brep] a
mksurface s a
tocanon r s 0.0005