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0023838: Modeling Data - Standard_OutOfRange in Geom_OffsetSurface::LocalDN (called by BRepFill_PipeShell)

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Fixed incorrect array allocation within GeomEvaluator_OffsetSurface::CalculateDN()
and protection against assigning out-of-range values in case of non-square
number of U and V derivatives on surface.
This commit is contained in:
kgv
2019-03-16 16:08:27 +03:00
committed by apn
parent ad67e36766
commit cb6cad7df1
2 changed files with 11 additions and 10 deletions
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12
src/GeomEvaluator/GeomEvaluator_OffsetSurface.cxx
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@@ -191,13 +191,21 @@ static void derivatives(Standard_Integer theMaxOrder,
else
{
for (i = 0; i <= theMaxOrder + theNU+ 1; i++)
{
for (j = i; j <= theMaxOrder + theNV + 1; j++)
{
if (i + j > theMinOrder)
{
theDerSurf.SetValue(i, j, theBasisSurf->DN(theU, theV, i, j));
if (i != j)
if (i != j
&& j <= theDerSurf.UpperRow()
&& i <= theDerSurf.UpperCol())
{
theDerSurf.SetValue(j, i, theBasisSurf->DN(theU, theV, j, i));
}
}
}
}
for (i = 0; i <= theMaxOrder + theNU; i++)
for (j = 0; j <= theMaxOrder + theNV; j++)
theDerNUV.SetValue(i, j, CSLib::DNNUV(i, j, theDerSurf));
@@ -776,7 +784,7 @@ gp_Vec GeomEvaluator_OffsetSurface::CalculateDN(
CSLib::Normal(theD1U, theD1V, the_D1MagTol, NStatus, Normal);
const Standard_Integer MaxOrder = (NStatus == CSLib_Defined) ? 0 : 3;
Standard_Integer OrderU, OrderV;
TColgp_Array2OfVec DerNUV(0, MaxOrder + theNu, 0, MaxOrder + theNu);
TColgp_Array2OfVec DerNUV(0, MaxOrder + theNu, 0, MaxOrder + theNv);
TColgp_Array2OfVec DerSurf(0, MaxOrder + theNu + 1, 0, MaxOrder + theNv + 1);
Standard_Real Umin = 0, Umax = 0, Vmin = 0, Vmax = 0;