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Allow the 3d swapper to create tetrahedra with 4 boundary vertices when not in FEM mode #301

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Allow the 3d swapper to create tetrahedra with 4 boundary vertices when not in FEM mode #301

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b53f33c
allow the 3d swapper to create tetrahedra with 4 bdy vertices when no…
mpotse Mar 21, 2025
a3ebba9
swapgen_3d.c: assume (mesh->info.fem == typchk) means FEM mode, not .…
mpotse Apr 12, 2025
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5 changes: 3 additions & 2 deletions src/mmg3d/swapgen_3d.c
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Original file line number Diff line number Diff line change
Expand Up @@ -147,7 +147,7 @@ MMG5_int MMG5_chkswpgen(MMG5_pMesh mesh,MMG5_pSol met,MMG5_int start,int ia,
calnew = 1.0;
ier = 1;

if ( mesh->info.fem ) {
if ( mesh->info.fem == typchk ) {
/* Do not create internal edges between boundary points */
p0 = &mesh->point[np];
if ( p0->tag & MG_BDY ) {
Expand Down Expand Up @@ -207,7 +207,8 @@ MMG5_int MMG5_chkswpgen(MMG5_pMesh mesh,MMG5_pSol met,MMG5_int start,int ia,
}

/* Prevent from creating a tetra with 4 bdy vertices */
if ( mesh->point[np].tag & MG_BDY ) {
/* when the mesh is in FEM mode */
if ( mesh->info.fem == typchk && (mesh->point[np].tag & MG_BDY) ) {
if ( ( mesh->point[pt->v[MMG5_ifar[i][0]]].tag & MG_BDY ) &&
( mesh->point[pt->v[MMG5_ifar[i][1]]].tag & MG_BDY ) ) {
if ( ( mesh->point[pt->v[MMG5_iare[i][0]]].tag & MG_BDY ) ||
Expand Down
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