1 #include <petsc/private/dmpleximpl.h> /*I "petscdmplex.h" I*/ 2 3 /*@C 4 DMPlexInvertCell - Flips cell orientations since Plex stores some of them internally with outward normals. 5 6 Input Parameters: 7 + cellType - The cell type 8 - cone - The incoming cone 9 10 Output Parameter: 11 . cone - The inverted cone (in-place) 12 13 Level: developer 14 15 .seealso: `DMPlexGenerate()` 16 @*/ 17 PetscErrorCode DMPlexInvertCell(DMPolytopeType cellType, PetscInt cone[]) 18 { 19 #define SWAPCONE(cone,i,j) \ 20 do { \ 21 PetscInt _cone_tmp; \ 22 _cone_tmp = (cone)[i]; \ 23 (cone)[i] = (cone)[j]; \ 24 (cone)[j] = _cone_tmp; \ 25 } while (0) 26 27 PetscFunctionBegin; 28 switch (cellType) { 29 case DM_POLYTOPE_POINT: break; 30 case DM_POLYTOPE_SEGMENT: break; 31 case DM_POLYTOPE_POINT_PRISM_TENSOR: break; 32 case DM_POLYTOPE_TRIANGLE: break; 33 case DM_POLYTOPE_QUADRILATERAL: break; 34 case DM_POLYTOPE_SEG_PRISM_TENSOR: SWAPCONE(cone,2,3); break; 35 case DM_POLYTOPE_TETRAHEDRON: SWAPCONE(cone,0,1); break; 36 case DM_POLYTOPE_HEXAHEDRON: SWAPCONE(cone,1,3); break; 37 case DM_POLYTOPE_TRI_PRISM: SWAPCONE(cone,1,2); break; 38 case DM_POLYTOPE_TRI_PRISM_TENSOR: break; 39 case DM_POLYTOPE_QUAD_PRISM_TENSOR: break; 40 default: break; 41 } 42 PetscFunctionReturn(0); 43 #undef SWAPCONE 44 } 45 46 /*@C 47 DMPlexReorderCell - Flips cell orientations since Plex stores some of them internally with outward normals. 48 49 Input Parameters: 50 + dm - The DMPlex object 51 . cell - The cell 52 - cone - The incoming cone 53 54 Output Parameter: 55 . cone - The reordered cone (in-place) 56 57 Level: developer 58 59 .seealso: `DMPlexGenerate()` 60 @*/ 61 PetscErrorCode DMPlexReorderCell(DM dm, PetscInt cell, PetscInt cone[]) 62 { 63 DMPolytopeType cellType; 64 65 PetscFunctionBegin; 66 PetscCall(DMPlexGetCellType(dm, cell, &cellType)); 67 PetscCall(DMPlexInvertCell(cellType, cone)); 68 PetscFunctionReturn(0); 69 } 70 71 /*@C 72 DMPlexTriangleSetOptions - Set the options used for the Triangle mesh generator 73 74 Not Collective 75 76 Inputs Parameters: 77 + dm - The DMPlex object 78 - opts - The command line options 79 80 Level: developer 81 82 .seealso: `DMPlexTetgenSetOptions()`, `DMPlexGenerate()` 83 @*/ 84 PetscErrorCode DMPlexTriangleSetOptions(DM dm, const char *opts) 85 { 86 DM_Plex *mesh = (DM_Plex*) dm->data; 87 88 PetscFunctionBegin; 89 PetscValidHeaderSpecific(dm, DM_CLASSID, 1); 90 PetscValidCharPointer(opts, 2); 91 PetscCall(PetscFree(mesh->triangleOpts)); 92 PetscCall(PetscStrallocpy(opts, &mesh->triangleOpts)); 93 PetscFunctionReturn(0); 94 } 95 96 /*@C 97 DMPlexTetgenSetOptions - Set the options used for the Tetgen mesh generator 98 99 Not Collective 100 101 Inputs Parameters: 102 + dm - The DMPlex object 103 - opts - The command line options 104 105 Level: developer 106 107 .seealso: `DMPlexTriangleSetOptions()`, `DMPlexGenerate()` 108 @*/ 109 PetscErrorCode DMPlexTetgenSetOptions(DM dm, const char *opts) 110 { 111 DM_Plex *mesh = (DM_Plex*) dm->data; 112 113 PetscFunctionBegin; 114 PetscValidHeaderSpecific(dm, DM_CLASSID, 1); 115 PetscValidCharPointer(opts, 2); 116 PetscCall(PetscFree(mesh->tetgenOpts)); 117 PetscCall(PetscStrallocpy(opts, &mesh->tetgenOpts)); 118 PetscFunctionReturn(0); 119 } 120 121 /*@C 122 DMPlexGenerate - Generates a mesh. 123 124 Not Collective 125 126 Input Parameters: 127 + boundary - The DMPlex boundary object 128 . name - The mesh generation package name 129 - interpolate - Flag to create intermediate mesh elements 130 131 Output Parameter: 132 . mesh - The DMPlex object 133 134 Options Database: 135 + -dm_plex_generate <name> - package to generate mesh, for example, triangle, ctetgen or tetgen 136 - -dm_generator <name> - package to generate mesh, for example, triangle, ctetgen or tetgen 137 138 Level: intermediate 139 140 .seealso: `DMPlexCreate()`, `DMRefine()` 141 @*/ 142 PetscErrorCode DMPlexGenerate(DM boundary, const char name[], PetscBool interpolate, DM *mesh) 143 { 144 DMGeneratorFunctionList fl; 145 char genname[PETSC_MAX_PATH_LEN]; 146 const char *suggestions; 147 PetscInt dim; 148 PetscBool flg; 149 150 PetscFunctionBegin; 151 PetscValidHeaderSpecific(boundary, DM_CLASSID, 1); 152 PetscValidLogicalCollectiveBool(boundary, interpolate, 3); 153 PetscCall(DMGetDimension(boundary, &dim)); 154 PetscCall(PetscOptionsGetString(((PetscObject) boundary)->options,((PetscObject) boundary)->prefix, "-dm_generator", genname, sizeof(genname), &flg)); 155 if (flg) name = genname; 156 else { 157 PetscCall(PetscOptionsGetString(((PetscObject) boundary)->options,((PetscObject) boundary)->prefix, "-dm_plex_generate", genname, sizeof(genname), &flg)); 158 if (flg) name = genname; 159 } 160 161 fl = DMGenerateList; 162 if (name) { 163 while (fl) { 164 PetscCall(PetscStrcmp(fl->name,name,&flg)); 165 if (flg) { 166 PetscCall((*fl->generate)(boundary,interpolate,mesh)); 167 PetscFunctionReturn(0); 168 } 169 fl = fl->next; 170 } 171 SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Grid generator %s not registered; you may need to add --download-%s to your ./configure options",name,name); 172 } else { 173 while (fl) { 174 if (boundary->dim == fl->dim) { 175 PetscCall((*fl->generate)(boundary,interpolate,mesh)); 176 PetscFunctionReturn(0); 177 } 178 fl = fl->next; 179 } 180 suggestions = ""; 181 if (boundary->dim+1 == 2) suggestions = " You may need to add --download-triangle to your ./configure options"; 182 else if (boundary->dim+1 == 3) suggestions = " You may need to add --download-ctetgen or --download-tetgen in your ./configure options"; 183 SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"No grid generator of dimension %" PetscInt_FMT " registered%s",boundary->dim+1,suggestions); 184 } 185 } 186