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Force the split of regular boundary edges connecting ridge or non-manifold vertices #229

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Force the split of regular boundary edges connecting ridge or non-manifold vertices #229

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9 changes: 8 additions & 1 deletion src/mmg3d/mmg3d1.c
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Original file line number Diff line number Diff line change
Expand Up @@ -487,9 +487,16 @@ int8_t MMG5_chkedg(MMG5_pMesh mesh,MMG5_Tria *pt,int8_t ori, double hmax,
/* } */
/* } */

hma2 = MMG3D_LLONG*MMG3D_LLONG*hmax*hmax;

/* Split regular boundary edges connecting ridge or non-manifold points */
if ( (MG_GEO_OR_NOM(p[i1]->tag) && MG_GEO_OR_NOM(p[i2]->tag)) && !MG_GEO_OR_NOM(pt->tag[i]) ) {
MG_SET(pt->flag,i);
continue;
}

/* check length */
hma2 = MMG3D_LLONG*MMG3D_LLONG*hmax*hmax;

ux = p[i2]->c[0] - p[i1]->c[0];
uy = p[i2]->c[1] - p[i1]->c[1];
uz = p[i2]->c[2] - p[i1]->c[2];
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12 changes: 12 additions & 0 deletions src/mmg3d/swap_3d.c
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Expand Up @@ -134,6 +134,18 @@ int MMG5_chkswpbdy(MMG5_pMesh mesh, MMG5_pSol met, int64_t *list,int ilist,
(tt2.v[MMG5_inxt2[ia2]] == nq && tt2.v[MMG5_iprv2[ia2]] == np) );
na2 = tt2.v[ia2];

#ifdef NDEBUG
/* Check that we don't have a regular bdy edge connecting ridge or nm points */
if ( MG_GEO_OR_NOM(mesh->point[np].tag) && MG_GEO_OR_NOM(mesh->point[nq].tag) ) {
assert ( ! MG_GEO_OR_NOM(tt1.tag[ia1]) );
assert ( ! MG_GEO_OR_NOM(tt2.tag[ia2]) );
}
#endif
/* No swap if it creates a regular boundary edge connecting ridge or non-manifold points */
if ( MG_GEO_OR_NOM(mesh->point[na1].tag) && MG_GEO_OR_NOM(mesh->point[na2].tag) ) {
return 0;
}

/* Check non convexity (temporarily use b0,b1)*/
MMG5_norpts(mesh,tt1.v[ia1],tt1.v[MMG5_inxt2[ia1]],tt2.v[ia2],b0);
MMG5_norpts(mesh,tt2.v[ia2],tt2.v[MMG5_inxt2[ia2]],tt1.v[ia1],b1);
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