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Fix growth vector calculation (do more vector reduction to avoid strange results from inverting badly conditioned matrix)

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This commit is contained in:
Matthias Hochsteger 2024-10-31 15:49:41 +01:00
parent c27650af0a
commit c27dbdef30
1 changed files with 14 additions and 11 deletions
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5
libsrc/meshing/boundarylayer.cpp
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@ -63,12 +63,14 @@ Vec<3> CalcGrowthVector (FlatArray<Vec<3>> ns)
for (auto j : Range(3)) for (auto j : Range(3))
mat(i, j) = ns[i][j]; mat(i, j) = ns[i][j];
if (fabs(mat.Det()) > 1e-6) if (fabs(mat.Det()) > 1e-2)
{ {
DenseMatrix mat(3, 3); DenseMatrix mat(3, 3);
for (auto i : Range(3)) for (auto i : Range(3))
for (auto j : Range(3)) for (auto j : Range(3))
mat(i, j) = ns[i] * ns[j]; mat(i, j) = ns[i] * ns[j];
if (fabs(mat.Det()) > 1e-2)
{
Vector rhs(3); Vector rhs(3);
rhs = 1.; rhs = 1.;
Vector res(3); Vector res(3);
@ -81,6 +83,7 @@ Vec<3> CalcGrowthVector (FlatArray<Vec<3>> ns)
return growth; return growth;
} }
} }
}
auto [maxpos1, maxpos2] = FindCloseVectors(ns); auto [maxpos1, maxpos2] = FindCloseVectors(ns);
Array<Vec<3>> new_normals; Array<Vec<3>> new_normals;
new_normals = ns; new_normals = ns;