Date: 2026-07-30T21:14:04+00:00

Actual source code: plexref1d.c

      1: #include <petsc/private/dmplextransformimpl.h>

      3: static PetscErrorCode DMPlexTransformSetUp_1D(DMPlexTransform tr)
      4: {
      5:   DM       dm;
      6:   DMLabel  active;
      7:   PetscInt pStart, pEnd, p;

      9:   PetscFunctionBegin;
     10:   PetscCall(DMPlexTransformGetDM(tr, &dm));
     11:   PetscCall(DMPlexTransformGetActive(tr, &active));
     12:   PetscCheck(active, PetscObjectComm((PetscObject)tr), PETSC_ERR_ARG_WRONGSTATE, "DMPlexTransform must have an adaptation label in order to use 1D algorithm");
     13:   /* Calculate refineType for each cell */
     14:   PetscCall(DMLabelCreate(PETSC_COMM_SELF, "Refine Type", &tr->trType));
     15:   PetscCall(DMPlexGetChart(dm, &pStart, &pEnd));
     16:   for (p = pStart; p < pEnd; ++p) {
     17:     DMLabel        trType = tr->trType;
     18:     DMPolytopeType ct;
     19:     PetscInt       val;

     21:     PetscCall(DMPlexGetCellType(dm, p, &ct));
     22:     switch (ct) {
     23:     case DM_POLYTOPE_POINT:
     24:       PetscCall(DMLabelSetValue(trType, p, 0));
     25:       break;
     26:     case DM_POLYTOPE_SEGMENT:
     27:     case DM_POLYTOPE_POINT_PRISM_TENSOR:
     28:       PetscCall(DMLabelGetValue(active, p, &val));
     29:       if (val == 1) PetscCall(DMLabelSetValue(trType, p, val));
     30:       else PetscCall(DMLabelSetValue(trType, p, 2));
     31:       break;
     32:     default:
     33:       SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot handle points of type %s", DMPolytopeTypes[ct]);
     34:     }
     35:   }
     36:   PetscFunctionReturn(PETSC_SUCCESS);
     37: }

     39: static PetscErrorCode DMPlexTransformGetSubcellOrientation_1D(DMPlexTransform tr, DMPolytopeType sct, PetscInt sp, PetscInt so, DMPolytopeType tct, PetscInt r, PetscInt o, PetscInt *rnew, PetscInt *onew)
     40: {
     41:   PetscInt rt;

     43:   PetscFunctionBeginHot;
     44:   PetscCall(DMLabelGetValue(tr->trType, sp, &rt));
     45:   *rnew = r;
     46:   *onew = o;
     47:   switch (rt) {
     48:   case 1:
     49:     PetscCall(DMPlexTransformGetSubcellOrientation_Regular(tr, sct, sp, so, tct, r, o, rnew, onew));
     50:     break;
     51:   default:
     52:     PetscCall(DMPlexTransformGetSubcellOrientationIdentity(tr, sct, sp, so, tct, r, o, rnew, onew));
     53:   }
     54:   PetscFunctionReturn(PETSC_SUCCESS);
     55: }

     57: static PetscErrorCode DMPlexTransformCellTransform_1D(DMPlexTransform tr, DMPolytopeType source, PetscInt p, PetscInt *rt, PetscInt *Nt, DMPolytopeType *target[], PetscInt *size[], PetscInt *cone[], PetscInt *ornt[])
     58: {
     59:   DMLabel  trType = tr->trType;
     60:   PetscInt val;

     62:   PetscFunctionBeginHot;
     63:   PetscCheck(p >= 0, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Point argument is invalid");
     64:   PetscCall(DMLabelGetValue(trType, p, &val));
     65:   if (rt) *rt = val;
     66:   switch (source) {
     67:   case DM_POLYTOPE_POINT:
     68:     PetscCall(DMPlexTransformCellRefine_Regular(tr, source, p, NULL, Nt, target, size, cone, ornt));
     69:     break;
     70:   case DM_POLYTOPE_POINT_PRISM_TENSOR:
     71:   case DM_POLYTOPE_SEGMENT:
     72:     if (val == 1) PetscCall(DMPlexTransformCellRefine_Regular(tr, source, p, NULL, Nt, target, size, cone, ornt));
     73:     else PetscCall(DMPlexTransformCellTransformIdentity(tr, source, p, NULL, Nt, target, size, cone, ornt));
     74:     break;
     75:   default:
     76:     SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "No refinement strategy for %s", DMPolytopeTypes[source]);
     77:   }
     78:   PetscFunctionReturn(PETSC_SUCCESS);
     79: }

     81: static PetscErrorCode DMPlexTransformSetFromOptions_1D(DMPlexTransform tr, PetscOptionItems PetscOptionsObject)
     82: {
     83:   PetscInt  cells[256], n = 256, i;
     84:   PetscBool flg;

     86:   PetscFunctionBegin;
     87:   PetscOptionsHeadBegin(PetscOptionsObject, "DMPlex Options");
     88:   PetscCall(PetscOptionsIntArray("-dm_plex_transform_1d_ref_cell", "Mark cells for refinement", "", cells, &n, &flg));
     89:   if (flg) {
     90:     DMLabel active;

     92:     PetscCall(DMLabelCreate(PETSC_COMM_SELF, "Adaptation Label", &active));
     93:     for (i = 0; i < n; ++i) PetscCall(DMLabelSetValue(active, cells[i], DM_ADAPT_REFINE));
     94:     PetscCall(DMPlexTransformSetActive(tr, active));
     95:     PetscCall(DMLabelDestroy(&active));
     96:   }
     97:   PetscOptionsHeadEnd();
     98:   PetscFunctionReturn(PETSC_SUCCESS);
     99: }

    101: static PetscErrorCode DMPlexTransformView_1D(DMPlexTransform tr, PetscViewer viewer)
    102: {
    103:   PetscBool isascii;

    105:   PetscFunctionBegin;
    108:   PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &isascii));
    109:   if (isascii) {
    110:     PetscViewerFormat format;
    111:     const char       *name;

    113:     PetscCall(PetscObjectGetName((PetscObject)tr, &name));
    114:     PetscCall(PetscViewerASCIIPrintf(viewer, "1D refinement %s\n", name ? name : ""));
    115:     PetscCall(PetscViewerGetFormat(viewer, &format));
    116:     if (format == PETSC_VIEWER_ASCII_INFO_DETAIL) PetscCall(DMLabelView(tr->trType, viewer));
    117:   } else {
    118:     SETERRQ(PetscObjectComm((PetscObject)tr), PETSC_ERR_SUP, "Viewer type %s not yet supported for DMPlexTransform writing", ((PetscObject)viewer)->type_name);
    119:   }
    120:   PetscFunctionReturn(PETSC_SUCCESS);
    121: }

    123: static PetscErrorCode DMPlexTransformDestroy_1D(DMPlexTransform tr)
    124: {
    125:   PetscFunctionBegin;
    126:   PetscCall(PetscFree(tr->data));
    127:   PetscFunctionReturn(PETSC_SUCCESS);
    128: }

    130: static PetscErrorCode DMPlexTransformInitialize_1D(DMPlexTransform tr)
    131: {
    132:   PetscFunctionBegin;
    133:   tr->ops->view                  = DMPlexTransformView_1D;
    134:   tr->ops->setfromoptions        = DMPlexTransformSetFromOptions_1D;
    135:   tr->ops->setup                 = DMPlexTransformSetUp_1D;
    136:   tr->ops->destroy               = DMPlexTransformDestroy_1D;
    137:   tr->ops->setdimensions         = DMPlexTransformSetDimensions_Internal;
    138:   tr->ops->celltransform         = DMPlexTransformCellTransform_1D;
    139:   tr->ops->getsubcellorientation = DMPlexTransformGetSubcellOrientation_1D;
    140:   tr->ops->mapcoordinates        = DMPlexTransformMapCoordinatesBarycenter_Internal;
    141:   PetscFunctionReturn(PETSC_SUCCESS);
    142: }

    144: PETSC_EXTERN PetscErrorCode DMPlexTransformCreate_1D(DMPlexTransform tr)
    145: {
    146:   DMPlexRefine_1D *f;

    148:   PetscFunctionBegin;
    150:   PetscCall(PetscNew(&f));
    151:   tr->data = f;

    153:   PetscCall(DMPlexTransformInitialize_1D(tr));
    154:   PetscFunctionReturn(PETSC_SUCCESS);
    155: }