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0026384: Add explicit check for null magnitude instead of catching of exception in BRepMesh_FastDiscretFace::control()

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Check normal for null magnitude using gp::Resolution ()
This commit is contained in:
oan
2016-02-17 17:17:54 +03:00
committed by abv
parent 1907fb9a74
commit 99c008e90f
1 changed files with 16 additions and 21 deletions
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37
src/BRepMesh/BRepMesh_FastDiscretFace.cxx
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@@ -1227,29 +1227,24 @@ Standard_Real BRepMesh_FastDiscretFace::control(
Standard_Real aSqDef = -1.;
Standard_Boolean isSkipped = Standard_False;
gp_XYZ normal(aLinkVec[0] ^ aLinkVec[1]);
try
{
OCC_CATCH_SIGNALS
normal.Normalize();
// Check deflection on triangle
gp_XY mi2d = (xy[0] + xy[1] + xy[2]) / 3.0;
gFace->D0(mi2d.X(), mi2d.Y(), pDef);
aSqDef = Abs(normal * (pDef.XYZ() - p[0]));
aSqDef *= aSqDef;
isSkipped = !checkDeflectionAndInsert(pDef, mi2d, theIsFirst,
aSqDef, aSqDefFace, aCircles, theNewVertices, aMaxSqDef);
if (isSkipped)
break;
}
catch (Standard_Failure)
{
if (normal.SquareModulus () < gp::Resolution())
continue;
}
normal.Normalize();
// Check deflection at triangle centroid
gp_XY aCenter2d = (xy[0] + xy[1] + xy[2]) / 3.0;
gFace->D0(aCenter2d.X(), aCenter2d.Y(), pDef);
aSqDef = Abs(normal * (pDef.XYZ() - p[0]));
aSqDef *= aSqDef;
isSkipped = !checkDeflectionAndInsert(pDef, aCenter2d, theIsFirst,
aSqDef, aSqDefFace, aCircles, theNewVertices, aMaxSqDef);
if (isSkipped)
break;
// Check deflection at triangle links
for (Standard_Integer i = 0; i < 3 && !isSkipped; ++i)
{
if (m[i]) // is a boundary