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0028844: Regression vs 7.1.0: Exception is raised by the solid classification algorithm

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Protection from normalization of the null vector.

Test cases for the issue.
This commit is contained in:
emv
2017-06-16 08:59:21 +03:00
committed by bugmaster
parent f24f542856
commit df119b4ed9
8 changed files with 106 additions and 17 deletions
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17
src/IntPatch/IntPatch_Polyhedron.cxx
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@@ -207,7 +207,12 @@ Standard_Real IntPatch_Polyhedron::DeflectionOnTriangle
gp_XYZ XYZ2=P3.XYZ()-P2.XYZ();
gp_XYZ XYZ3=P1.XYZ()-P3.XYZ();
gp_Vec NormalVector((XYZ1^XYZ2)+(XYZ2^XYZ3)+(XYZ3^XYZ1));
NormalVector.Normalize();
Standard_Real aNormLen = NormalVector.Magnitude();
if (aNormLen < gp::Resolution()) {
return 0.;
}
//
NormalVector.Divide(aNormLen);
//-- Calcul du point u,v au centre du triangle
Standard_Real u = (u1+u2+u3)/3.0;
Standard_Real v = (v1+v2+v3)/3.0;
@@ -548,8 +553,14 @@ void IntPatch_Polyhedron::PlaneEquation (const Standard_Integer Triang,
if(v3.SquareModulus()<=LONGUEUR_MINI_EDGE_TRIANGLE) { NormalVector.SetCoord(1.0,0.0,0.0); return; }
NormalVector= (v1^v2)+(v2^v3)+(v3^v1);
NormalVector.Normalize();
PolarDistance = NormalVector * Point(i1).XYZ();
Standard_Real aNormLen = NormalVector.Modulus();
if (aNormLen < gp::Resolution()) {
PolarDistance = 0.;
}
else {
NormalVector.Divide(aNormLen);
PolarDistance = NormalVector * Point(i1).XYZ();
}
}
//=======================================================================
//function : Contain