Actual source code: trigenerate.c
1: #include <petsc/private/dmpleximpl.h>
3: #if !defined(ANSI_DECLARATORS)
4: #define ANSI_DECLARATORS
5: #endif
6: #include <triangle.h>
8: static PetscErrorCode InitInput_Triangle(struct triangulateio *inputCtx)
9: {
10: PetscFunctionBegin;
11: inputCtx->numberofpoints = 0;
12: inputCtx->numberofpointattributes = 0;
13: inputCtx->pointlist = NULL;
14: inputCtx->pointattributelist = NULL;
15: inputCtx->pointmarkerlist = NULL;
16: inputCtx->numberofsegments = 0;
17: inputCtx->segmentlist = NULL;
18: inputCtx->segmentmarkerlist = NULL;
19: inputCtx->numberoftriangleattributes = 0;
20: inputCtx->trianglelist = NULL;
21: inputCtx->numberofholes = 0;
22: inputCtx->holelist = NULL;
23: inputCtx->numberofregions = 0;
24: inputCtx->regionlist = NULL;
25: PetscFunctionReturn(PETSC_SUCCESS);
26: }
28: static PetscErrorCode InitOutput_Triangle(struct triangulateio *outputCtx)
29: {
30: PetscFunctionBegin;
31: outputCtx->numberofpoints = 0;
32: outputCtx->pointlist = NULL;
33: outputCtx->pointattributelist = NULL;
34: outputCtx->pointmarkerlist = NULL;
35: outputCtx->numberoftriangles = 0;
36: outputCtx->trianglelist = NULL;
37: outputCtx->triangleattributelist = NULL;
38: outputCtx->neighborlist = NULL;
39: outputCtx->segmentlist = NULL;
40: outputCtx->segmentmarkerlist = NULL;
41: outputCtx->numberofedges = 0;
42: outputCtx->edgelist = NULL;
43: outputCtx->edgemarkerlist = NULL;
44: PetscFunctionReturn(PETSC_SUCCESS);
45: }
47: static PetscErrorCode FiniOutput_Triangle(struct triangulateio *outputCtx)
48: {
49: PetscFunctionBegin;
50: free(outputCtx->pointlist);
51: free(outputCtx->pointmarkerlist);
52: free(outputCtx->segmentlist);
53: free(outputCtx->segmentmarkerlist);
54: free(outputCtx->edgelist);
55: free(outputCtx->edgemarkerlist);
56: free(outputCtx->trianglelist);
57: free(outputCtx->neighborlist);
58: PetscFunctionReturn(PETSC_SUCCESS);
59: }
61: PETSC_EXTERN PetscErrorCode DMPlexGenerate_Triangle(DM boundary, PetscBool interpolate, DM *dm)
62: {
63: MPI_Comm comm;
64: DM_Plex *mesh = (DM_Plex *)boundary->data;
65: PetscInt dim = 2;
66: const PetscBool createConvexHull = PETSC_FALSE;
67: const PetscBool constrained = PETSC_FALSE;
68: const char *labelName = "marker";
69: const char *labelName2 = "Face Sets";
70: struct triangulateio in;
71: struct triangulateio out;
72: DMLabel label, label2;
73: PetscInt vStart, vEnd, v, eStart, eEnd, e;
74: PetscMPIInt rank;
75: PetscBool flg;
76: char opts[64];
78: PetscFunctionBegin;
79: PetscCall(PetscObjectGetComm((PetscObject)boundary, &comm));
80: PetscCallMPI(MPI_Comm_rank(comm, &rank));
81: PetscCall(InitInput_Triangle(&in));
82: PetscCall(InitOutput_Triangle(&out));
83: PetscCall(DMPlexGetDepthStratum(boundary, 0, &vStart, &vEnd));
84: PetscCall(DMGetLabel(boundary, labelName, &label));
85: PetscCall(DMGetLabel(boundary, labelName2, &label2));
86: PetscCall(PetscOptionsGetString(((PetscObject)boundary)->options, ((PetscObject)boundary)->prefix, "-dm_plex_generate_triangle_opts", opts, sizeof(opts), &flg));
87: if (flg) PetscCall(DMPlexTriangleSetOptions(boundary, opts));
89: PetscCall(PetscCIntCast(vEnd - vStart, &in.numberofpoints));
90: if (in.numberofpoints > 0) {
91: PetscSection coordSection;
92: Vec coordinates;
93: PetscScalar *array;
95: PetscCall(PetscMalloc1(in.numberofpoints * dim, &in.pointlist));
96: PetscCall(PetscMalloc1(in.numberofpoints, &in.pointmarkerlist));
97: PetscCall(DMGetCoordinatesLocal(boundary, &coordinates));
98: PetscCall(DMGetCoordinateSection(boundary, &coordSection));
99: PetscCall(VecGetArray(coordinates, &array));
100: for (v = vStart; v < vEnd; ++v) {
101: const PetscInt idx = v - vStart;
102: PetscInt val, off, d;
104: PetscCall(PetscSectionGetOffset(coordSection, v, &off));
105: for (d = 0; d < dim; ++d) in.pointlist[idx * dim + d] = PetscRealPart(array[off + d]);
106: if (label) {
107: PetscCall(DMLabelGetValue(label, v, &val));
108: PetscCall(PetscCIntCast(val, &in.pointmarkerlist[idx]));
109: }
110: }
111: PetscCall(VecRestoreArray(coordinates, &array));
112: }
113: PetscCall(DMPlexGetHeightStratum(boundary, 0, &eStart, &eEnd));
114: PetscCall(PetscCIntCast(eEnd - eStart, &in.numberofsegments));
115: if (in.numberofsegments > 0) {
116: PetscCall(PetscMalloc1(in.numberofsegments * 2, &in.segmentlist));
117: PetscCall(PetscMalloc1(in.numberofsegments, &in.segmentmarkerlist));
118: for (e = eStart; e < eEnd; ++e) {
119: const PetscInt idx = e - eStart;
120: const PetscInt *cone;
121: PetscInt val;
123: PetscCall(DMPlexGetCone(boundary, e, &cone));
125: PetscCall(PetscCIntCast(cone[0] - vStart, &in.segmentlist[idx * 2 + 0]));
126: PetscCall(PetscCIntCast(cone[1] - vStart, &in.segmentlist[idx * 2 + 1]));
128: if (label) {
129: PetscCall(DMLabelGetValue(label, e, &val));
130: PetscCall(PetscCIntCast(val, &in.segmentmarkerlist[idx]));
131: }
132: }
133: }
134: if (rank == 0) {
135: char args[32];
137: /* Take away 'Q' for verbose output */
138: PetscCall(PetscStrncpy(args, "pqezQ", sizeof(args)));
139: if (createConvexHull) PetscCall(PetscStrlcat(args, "c", sizeof(args)));
140: if (constrained) PetscCall(PetscStrncpy(args, "zepDQ", sizeof(args)));
141: if (mesh->triangleOpts) {
142: triangulate(mesh->triangleOpts, &in, &out, NULL);
143: } else {
144: triangulate(args, &in, &out, NULL);
145: }
146: }
147: PetscCall(PetscFree(in.pointlist));
148: PetscCall(PetscFree(in.pointmarkerlist));
149: PetscCall(PetscFree(in.segmentlist));
150: PetscCall(PetscFree(in.segmentmarkerlist));
151: PetscCall(PetscFree(in.holelist));
153: {
154: DMLabel glabel = NULL;
155: DMLabel glabel2 = NULL;
156: const PetscInt numCorners = 3;
157: const PetscInt numCells = out.numberoftriangles;
158: const PetscInt numVertices = out.numberofpoints;
159: PetscInt *cells;
160: PetscReal *meshCoords;
162: if (sizeof(PetscReal) == sizeof(out.pointlist[0])) {
163: meshCoords = (PetscReal *)out.pointlist;
164: } else {
165: PetscInt i;
167: PetscCall(PetscMalloc1(dim * numVertices, &meshCoords));
168: for (i = 0; i < dim * numVertices; i++) meshCoords[i] = (PetscReal)out.pointlist[i];
169: }
170: if (sizeof(PetscInt) == sizeof(out.trianglelist[0])) {
171: cells = (PetscInt *)out.trianglelist;
172: } else {
173: PetscCall(PetscMalloc1(numCells * numCorners, &cells));
174: for (PetscInt i = 0; i < numCells * numCorners; i++) cells[i] = (PetscInt)out.trianglelist[i];
175: }
176: PetscCall(DMPlexCreateFromCellListPetsc(comm, dim, numCells, numVertices, numCorners, interpolate, cells, dim, meshCoords, dm));
177: if (sizeof(PetscReal) != sizeof(out.pointlist[0])) PetscCall(PetscFree(meshCoords));
178: if (sizeof(PetscInt) != sizeof(out.trianglelist[0])) PetscCall(PetscFree(cells));
179: if (label) {
180: PetscCall(DMCreateLabel(*dm, labelName));
181: PetscCall(DMGetLabel(*dm, labelName, &glabel));
182: }
183: if (label2) {
184: PetscCall(DMCreateLabel(*dm, labelName2));
185: PetscCall(DMGetLabel(*dm, labelName2, &glabel2));
186: }
187: /* Set labels */
188: for (v = 0; v < numVertices; ++v) {
189: if (out.pointmarkerlist[v] && glabel) PetscCall(DMLabelSetValue(glabel, v + numCells, out.pointmarkerlist[v]));
190: }
191: if (interpolate) {
192: for (e = 0; e < out.numberofedges; e++) {
193: if (out.edgemarkerlist[e]) {
194: const PetscInt vertices[2] = {out.edgelist[e * 2 + 0] + numCells, out.edgelist[e * 2 + 1] + numCells};
195: const PetscInt *edges;
196: PetscInt numEdges;
198: PetscCall(DMPlexGetJoin(*dm, 2, vertices, &numEdges, &edges));
199: PetscCheck(numEdges == 1, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Two vertices must cover only one edge, not %" PetscInt_FMT, numEdges);
200: if (glabel) PetscCall(DMLabelSetValue(glabel, edges[0], out.edgemarkerlist[e]));
201: if (glabel2) PetscCall(DMLabelSetValue(glabel2, edges[0], out.edgemarkerlist[e]));
202: PetscCall(DMPlexRestoreJoin(*dm, 2, vertices, &numEdges, &edges));
203: }
204: }
205: }
206: PetscCall(DMPlexSetRefinementUniform(*dm, PETSC_FALSE));
207: }
208: #if 0 /* Do not currently support holes */
209: PetscCall(DMPlexCopyHoles(*dm, boundary));
210: #endif
211: PetscCall(FiniOutput_Triangle(&out));
212: PetscFunctionReturn(PETSC_SUCCESS);
213: }
215: PETSC_EXTERN PetscErrorCode DMPlexRefine_Triangle(DM dm, PetscReal *inmaxVolumes, DM *dmRefined)
216: {
217: MPI_Comm comm;
218: PetscInt dim = 2;
219: const char *labelName = "marker";
220: struct triangulateio in;
221: struct triangulateio out;
222: DMLabel label;
223: PetscInt vStart, vEnd, v, gcStart, cStart, cEnd, c, depth, depthGlobal;
224: PetscMPIInt rank;
225: double *maxVolumes;
227: PetscFunctionBegin;
228: PetscCall(PetscObjectGetComm((PetscObject)dm, &comm));
229: PetscCallMPI(MPI_Comm_rank(comm, &rank));
230: PetscCall(InitInput_Triangle(&in));
231: PetscCall(InitOutput_Triangle(&out));
232: PetscCall(DMPlexGetDepth(dm, &depth));
233: PetscCallMPI(MPIU_Allreduce(&depth, &depthGlobal, 1, MPIU_INT, MPI_MAX, comm));
234: PetscCall(DMPlexGetDepthStratum(dm, 0, &vStart, &vEnd));
235: PetscCall(DMGetLabel(dm, labelName, &label));
237: PetscCall(PetscCIntCast(vEnd - vStart, &in.numberofpoints));
238: if (in.numberofpoints > 0) {
239: PetscSection coordSection;
240: Vec coordinates;
241: PetscScalar *array;
243: PetscCall(PetscMalloc1(in.numberofpoints * dim, &in.pointlist));
244: PetscCall(PetscMalloc1(in.numberofpoints, &in.pointmarkerlist));
245: PetscCall(DMGetCoordinatesLocal(dm, &coordinates));
246: PetscCall(DMGetCoordinateSection(dm, &coordSection));
247: PetscCall(VecGetArray(coordinates, &array));
248: for (v = vStart; v < vEnd; ++v) {
249: const PetscInt idx = v - vStart;
250: PetscInt off, d, val;
252: PetscCall(PetscSectionGetOffset(coordSection, v, &off));
253: for (d = 0; d < dim; ++d) in.pointlist[idx * dim + d] = PetscRealPart(array[off + d]);
254: if (label) {
255: PetscCall(DMLabelGetValue(label, v, &val));
256: PetscCall(PetscCIntCast(val, &in.pointmarkerlist[idx]));
257: }
258: }
259: PetscCall(VecRestoreArray(coordinates, &array));
260: }
261: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
262: PetscCall(DMPlexGetCellTypeStratum(dm, DM_POLYTOPE_FV_GHOST, &gcStart, NULL));
263: if (gcStart >= 0) cEnd = gcStart;
265: in.numberofcorners = 3;
266: PetscCall(PetscCIntCast(cEnd - cStart, &in.numberoftriangles));
268: #if !defined(PETSC_USE_REAL_DOUBLE)
269: PetscCall(PetscMalloc1(cEnd - cStart, &maxVolumes));
270: for (c = 0; c < cEnd - cStart; ++c) maxVolumes[c] = (double)inmaxVolumes[c];
271: #else
272: maxVolumes = inmaxVolumes;
273: #endif
275: in.trianglearealist = (double *)maxVolumes;
276: if (in.numberoftriangles > 0) {
277: PetscCall(PetscMalloc1(in.numberoftriangles * in.numberofcorners, &in.trianglelist));
278: for (c = cStart; c < cEnd; ++c) {
279: const PetscInt idx = c - cStart;
280: PetscInt *closure = NULL;
281: PetscInt closureSize;
283: PetscCall(DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure));
284: PetscCheck(!(closureSize != 4) || !(closureSize != 7), comm, PETSC_ERR_ARG_WRONG, "Mesh has cell which is not a triangle, %" PetscInt_FMT " vertices in closure", closureSize);
285: for (v = 0; v < 3; ++v) PetscCall(PetscCIntCast(closure[(v + closureSize - 3) * 2] - vStart, &in.trianglelist[idx * in.numberofcorners + v]));
286: PetscCall(DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &closureSize, &closure));
287: }
288: }
289: /* TODO: Segment markers are missing on input */
290: if (rank == 0) {
291: char args[32];
293: /* Take away 'Q' for verbose output */
294: PetscCall(PetscStrncpy(args, "pqezQra", sizeof(args)));
295: triangulate(args, &in, &out, NULL);
296: }
297: PetscCall(PetscFree(in.pointlist));
298: PetscCall(PetscFree(in.pointmarkerlist));
299: PetscCall(PetscFree(in.segmentlist));
300: PetscCall(PetscFree(in.segmentmarkerlist));
301: PetscCall(PetscFree(in.trianglelist));
303: {
304: DMLabel rlabel = NULL;
305: const PetscInt numCorners = 3;
306: const PetscInt numCells = out.numberoftriangles;
307: const PetscInt numVertices = out.numberofpoints;
308: PetscInt *cells;
309: PetscReal *meshCoords;
310: PetscBool interpolate = depthGlobal > 1 ? PETSC_TRUE : PETSC_FALSE;
312: if (sizeof(PetscReal) == sizeof(out.pointlist[0])) {
313: meshCoords = (PetscReal *)out.pointlist;
314: } else {
315: PetscCall(PetscMalloc1(dim * numVertices, &meshCoords));
316: for (PetscInt i = 0; i < dim * numVertices; i++) meshCoords[i] = (PetscReal)out.pointlist[i];
317: }
318: if (sizeof(PetscInt) == sizeof(out.trianglelist[0])) {
319: cells = (PetscInt *)out.trianglelist;
320: } else {
321: PetscCall(PetscMalloc1(numCells * numCorners, &cells));
322: for (PetscInt i = 0; i < numCells * numCorners; i++) cells[i] = (PetscInt)out.trianglelist[i];
323: }
325: PetscCall(DMPlexCreateFromCellListPetsc(comm, dim, numCells, numVertices, numCorners, interpolate, cells, dim, meshCoords, dmRefined));
326: if (label) {
327: PetscCall(DMCreateLabel(*dmRefined, labelName));
328: PetscCall(DMGetLabel(*dmRefined, labelName, &rlabel));
329: }
330: if (sizeof(PetscReal) != sizeof(out.pointlist[0])) PetscCall(PetscFree(meshCoords));
331: if (sizeof(PetscInt) != sizeof(out.trianglelist[0])) PetscCall(PetscFree(cells));
332: /* Set labels */
333: for (v = 0; v < numVertices; ++v) {
334: if (out.pointmarkerlist[v] && rlabel) PetscCall(DMLabelSetValue(rlabel, v + numCells, out.pointmarkerlist[v]));
335: }
336: if (interpolate) {
337: for (PetscInt e = 0; e < out.numberofedges; e++) {
338: if (out.edgemarkerlist[e]) {
339: const PetscInt vertices[2] = {out.edgelist[e * 2 + 0] + numCells, out.edgelist[e * 2 + 1] + numCells};
340: const PetscInt *edges;
341: PetscInt numEdges;
343: PetscCall(DMPlexGetJoin(*dmRefined, 2, vertices, &numEdges, &edges));
344: PetscCheck(numEdges == 1, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Two vertices must cover only one edge, not %" PetscInt_FMT, numEdges);
345: if (rlabel) PetscCall(DMLabelSetValue(rlabel, edges[0], out.edgemarkerlist[e]));
346: PetscCall(DMPlexRestoreJoin(*dmRefined, 2, vertices, &numEdges, &edges));
347: }
348: }
349: }
350: PetscCall(DMPlexSetRefinementUniform(*dmRefined, PETSC_FALSE));
351: }
352: #if 0 /* Do not currently support holes */
353: PetscCall(DMPlexCopyHoles(*dm, boundary));
354: #endif
355: PetscCall(FiniOutput_Triangle(&out));
356: #if !defined(PETSC_USE_REAL_DOUBLE)
357: PetscCall(PetscFree(maxVolumes));
358: #endif
359: PetscFunctionReturn(PETSC_SUCCESS);
360: }