1 #include <petscdm.h> 2 #include <petscdmplex.h> 3 #include <petscdmswarm.h> 4 #include "data_bucket.h" 5 6 PetscErrorCode subdivide_triangle(PetscReal v1[2],PetscReal v2[2],PetscReal v3[3],PetscInt depth,PetscInt max,PetscReal xi[],PetscInt *np) 7 { 8 PetscReal v12[2],v23[2],v31[2]; 9 PetscInt i; 10 PetscErrorCode ierr; 11 12 PetscFunctionBegin; 13 if (depth == max) { 14 PetscReal cx[2]; 15 16 cx[0] = (v1[0] + v2[0] + v3[0])/3.0; 17 cx[1] = (v1[1] + v2[1] + v3[1])/3.0; 18 19 xi[2*(*np)+0] = cx[0]; 20 xi[2*(*np)+1] = cx[1]; 21 (*np)++; 22 PetscFunctionReturn(0); 23 } 24 25 /* calculate midpoints of each side */ 26 for (i = 0; i < 2; i++) { 27 v12[i] = (v1[i]+v2[i])/2.0; 28 v23[i] = (v2[i]+v3[i])/2.0; 29 v31[i] = (v3[i]+v1[i])/2.0; 30 } 31 32 /* recursively subdivide new triangles */ 33 ierr = subdivide_triangle(v1,v12,v31,depth+1,max,xi,np);CHKERRQ(ierr); 34 ierr = subdivide_triangle(v2,v23,v12,depth+1,max,xi,np);CHKERRQ(ierr); 35 ierr = subdivide_triangle(v3,v31,v23,depth+1,max,xi,np);CHKERRQ(ierr); 36 ierr = subdivide_triangle(v12,v23,v31,depth+1,max,xi,np);CHKERRQ(ierr); 37 PetscFunctionReturn(0); 38 } 39 40 41 PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_PLEX2D_SubDivide(DM dm,DM dmc,PetscInt nsub) 42 { 43 PetscErrorCode ierr; 44 const PetscInt dim = 2; 45 PetscInt q,npoints_q,e,nel,npe,pcnt,ps,pe,d,k,depth; 46 PetscReal *xi; 47 PetscReal **basis; 48 Vec coorlocal; 49 PetscSection coordSection; 50 PetscScalar *elcoor = NULL; 51 PetscReal *swarm_coor; 52 PetscInt *swarm_cellid; 53 PetscReal v1[2],v2[2],v3[2]; 54 55 PetscFunctionBegin; 56 57 npoints_q = 1; 58 for (d=0; d<nsub; d++) { npoints_q *= 4; } 59 ierr = PetscMalloc1(dim*npoints_q,&xi);CHKERRQ(ierr); 60 61 v1[0] = 0.0; v1[1] = 0.0; 62 v2[0] = 1.0; v2[1] = 0.0; 63 v3[0] = 0.0; v3[1] = 1.0; 64 depth = 0; 65 pcnt = 0; 66 ierr = subdivide_triangle(v1,v2,v3,depth,nsub,xi,&pcnt);CHKERRQ(ierr); 67 68 npe = 3; /* nodes per element (triangle) */ 69 ierr = PetscMalloc1(npoints_q,&basis);CHKERRQ(ierr); 70 for (q=0; q<npoints_q; q++) { 71 ierr = PetscMalloc1(npe,&basis[q]);CHKERRQ(ierr); 72 73 basis[q][0] = 1.0 - xi[dim*q+0] - xi[dim*q+1]; 74 basis[q][1] = xi[dim*q+0]; 75 basis[q][2] = xi[dim*q+1]; 76 } 77 78 /* 0->cell, 1->edge, 2->vert */ 79 ierr = DMPlexGetHeightStratum(dmc,0,&ps,&pe);CHKERRQ(ierr); 80 nel = pe - ps; 81 82 ierr = DMSwarmSetLocalSizes(dm,npoints_q*nel,-1);CHKERRQ(ierr); 83 ierr = DMSwarmGetField(dm,DMSwarmPICField_coor,NULL,NULL,(void**)&swarm_coor);CHKERRQ(ierr); 84 ierr = DMSwarmGetField(dm,DMSwarmPICField_cellid,NULL,NULL,(void**)&swarm_cellid);CHKERRQ(ierr); 85 86 ierr = DMGetCoordinatesLocal(dmc,&coorlocal);CHKERRQ(ierr); 87 ierr = DMGetCoordinateSection(dmc,&coordSection);CHKERRQ(ierr); 88 89 pcnt = 0; 90 for (e=0; e<nel; e++) { 91 ierr = DMPlexVecGetClosure(dmc,coordSection,coorlocal,e,NULL,&elcoor);CHKERRQ(ierr); 92 93 for (q=0; q<npoints_q; q++) { 94 for (d=0; d<dim; d++) { 95 swarm_coor[dim*pcnt+d] = 0.0; 96 for (k=0; k<npe; k++) { 97 swarm_coor[dim*pcnt+d] += basis[q][k] * PetscRealPart(elcoor[dim*k+d]); 98 } 99 } 100 swarm_cellid[pcnt] = e; 101 pcnt++; 102 } 103 ierr = DMPlexVecRestoreClosure(dmc,coordSection,coorlocal,e,NULL,&elcoor);CHKERRQ(ierr); 104 } 105 ierr = DMSwarmRestoreField(dm,DMSwarmPICField_cellid,NULL,NULL,(void**)&swarm_cellid);CHKERRQ(ierr); 106 ierr = DMSwarmRestoreField(dm,DMSwarmPICField_coor,NULL,NULL,(void**)&swarm_coor);CHKERRQ(ierr); 107 108 ierr = PetscFree(xi);CHKERRQ(ierr); 109 for (q=0; q<npoints_q; q++) { 110 ierr = PetscFree(basis[q]);CHKERRQ(ierr); 111 } 112 ierr = PetscFree(basis);CHKERRQ(ierr); 113 114 PetscFunctionReturn(0); 115 } 116 117 PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_PLEX2D_Regular(DM dm,DM dmc,PetscInt npoints) 118 { 119 PetscErrorCode ierr; 120 const PetscInt dim = 2; 121 PetscInt ii,jj,q,npoints_q,e,nel,npe,pcnt,ps,pe,d,k; 122 PetscReal *xi,ds,ds2; 123 PetscReal **basis; 124 Vec coorlocal; 125 PetscSection coordSection; 126 PetscScalar *elcoor = NULL; 127 PetscReal *swarm_coor; 128 PetscInt *swarm_cellid; 129 130 PetscFunctionBegin; 131 ierr = PetscMalloc1(dim*npoints*npoints,&xi);CHKERRQ(ierr); 132 pcnt = 0; 133 ds = 1.0/((PetscReal)(npoints-1)); 134 ds2 = 1.0/((PetscReal)(npoints)); 135 for (jj = 0; jj<npoints; jj++) { 136 for (ii=0; ii<npoints-jj; ii++) { 137 xi[dim*pcnt+0] = ii * ds; 138 xi[dim*pcnt+1] = jj * ds; 139 140 xi[dim*pcnt+0] *= (1.0 - 1.2*ds2); 141 xi[dim*pcnt+1] *= (1.0 - 1.2*ds2); 142 143 xi[dim*pcnt+0] += 0.35*ds2; 144 xi[dim*pcnt+1] += 0.35*ds2; 145 146 pcnt++; 147 } 148 } 149 npoints_q = pcnt; 150 151 npe = 3; /* nodes per element (triangle) */ 152 ierr = PetscMalloc1(npoints_q,&basis);CHKERRQ(ierr); 153 for (q=0; q<npoints_q; q++) { 154 ierr = PetscMalloc1(npe,&basis[q]);CHKERRQ(ierr); 155 156 basis[q][0] = 1.0 - xi[dim*q+0] - xi[dim*q+1]; 157 basis[q][1] = xi[dim*q+0]; 158 basis[q][2] = xi[dim*q+1]; 159 } 160 161 /* 0->cell, 1->edge, 2->vert */ 162 ierr = DMPlexGetHeightStratum(dmc,0,&ps,&pe);CHKERRQ(ierr); 163 nel = pe - ps; 164 165 ierr = DMSwarmSetLocalSizes(dm,npoints_q*nel,-1);CHKERRQ(ierr); 166 ierr = DMSwarmGetField(dm,DMSwarmPICField_coor,NULL,NULL,(void**)&swarm_coor);CHKERRQ(ierr); 167 ierr = DMSwarmGetField(dm,DMSwarmPICField_cellid,NULL,NULL,(void**)&swarm_cellid);CHKERRQ(ierr); 168 169 ierr = DMGetCoordinatesLocal(dmc,&coorlocal);CHKERRQ(ierr); 170 ierr = DMGetCoordinateSection(dmc,&coordSection);CHKERRQ(ierr); 171 172 pcnt = 0; 173 for (e=0; e<nel; e++) { 174 ierr = DMPlexVecGetClosure(dmc,coordSection,coorlocal,e,NULL,&elcoor);CHKERRQ(ierr); 175 176 for (q=0; q<npoints_q; q++) { 177 for (d=0; d<dim; d++) { 178 swarm_coor[dim*pcnt+d] = 0.0; 179 for (k=0; k<npe; k++) { 180 swarm_coor[dim*pcnt+d] += basis[q][k] * PetscRealPart(elcoor[dim*k+d]); 181 } 182 } 183 swarm_cellid[pcnt] = e; 184 pcnt++; 185 } 186 ierr = DMPlexVecRestoreClosure(dmc,coordSection,coorlocal,e,NULL,&elcoor);CHKERRQ(ierr); 187 } 188 ierr = DMSwarmRestoreField(dm,DMSwarmPICField_cellid,NULL,NULL,(void**)&swarm_cellid);CHKERRQ(ierr); 189 ierr = DMSwarmRestoreField(dm,DMSwarmPICField_coor,NULL,NULL,(void**)&swarm_coor);CHKERRQ(ierr); 190 191 ierr = PetscFree(xi);CHKERRQ(ierr); 192 for (q=0; q<npoints_q; q++) { 193 ierr = PetscFree(basis[q]);CHKERRQ(ierr); 194 } 195 ierr = PetscFree(basis);CHKERRQ(ierr); 196 197 PetscFunctionReturn(0); 198 } 199 200 PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_PLEX(DM dm,DM celldm,DMSwarmPICLayoutType layout,PetscInt layout_param) 201 { 202 PetscErrorCode ierr; 203 PetscInt dim; 204 205 PetscFunctionBegin; 206 ierr = DMGetDimension(celldm,&dim);CHKERRQ(ierr); 207 if (dim == 3) SETERRQ(PetscObjectComm((PetscObject)dm),PETSC_ERR_SUP,"No 3D support for PLEX"); 208 switch (layout) { 209 case DMSWARMPIC_LAYOUT_REGULAR: 210 ierr = private_DMSwarmInsertPointsUsingCellDM_PLEX2D_Regular(dm,celldm,layout_param);CHKERRQ(ierr); 211 break; 212 case DMSWARMPIC_LAYOUT_GAUSS: 213 SETERRQ(PetscObjectComm((PetscObject)dm),PETSC_ERR_SUP,"Gauss layout not supported for PLEX"); 214 break; 215 case DMSWARMPIC_LAYOUT_SUBDIVISION: 216 ierr = private_DMSwarmInsertPointsUsingCellDM_PLEX2D_SubDivide(dm,celldm,layout_param);CHKERRQ(ierr); 217 break; 218 } 219 PetscFunctionReturn(0); 220 } 221 222 /* 223 typedef struct { 224 PetscReal x,y; 225 } Point2d; 226 227 static PetscErrorCode signp2d(Point2d p1, Point2d p2, Point2d p3,PetscReal *s) 228 { 229 PetscFunctionBegin; 230 *s = (p1.x - p3.x) * (p2.y - p3.y) - (p2.x - p3.x) * (p1.y - p3.y); 231 PetscFunctionReturn(0); 232 } 233 */ 234 /* 235 static PetscErrorCode PointInTriangle(Point2d pt, Point2d v1, Point2d v2, Point2d v3,PetscBool *v) 236 { 237 PetscReal s1,s2,s3; 238 PetscBool b1, b2, b3; 239 240 PetscFunctionBegin; 241 signp2d(pt, v1, v2,&s1); b1 = s1 < 0.0f; 242 signp2d(pt, v2, v3,&s2); b2 = s2 < 0.0f; 243 signp2d(pt, v3, v1,&s3); b3 = s3 < 0.0f; 244 245 *v = ((b1 == b2) && (b2 == b3)); 246 PetscFunctionReturn(0); 247 } 248 */ 249 /* 250 static PetscErrorCode _ComputeLocalCoordinateAffine2d(PetscReal xp[],PetscReal coords[],PetscReal xip[],PetscReal *dJ) 251 { 252 PetscReal x1,y1,x2,y2,x3,y3; 253 PetscReal c,b[2],A[2][2],inv[2][2],detJ,od; 254 255 PetscFunctionBegin; 256 x1 = coords[2*0+0]; 257 x2 = coords[2*1+0]; 258 x3 = coords[2*2+0]; 259 260 y1 = coords[2*0+1]; 261 y2 = coords[2*1+1]; 262 y3 = coords[2*2+1]; 263 264 c = x1 - 0.5*x1 - 0.5*x1 + 0.5*x2 + 0.5*x3; 265 b[0] = xp[0] - c; 266 c = y1 - 0.5*y1 - 0.5*y1 + 0.5*y2 + 0.5*y3; 267 b[1] = xp[1] - c; 268 269 A[0][0] = -0.5*x1 + 0.5*x2; A[0][1] = -0.5*x1 + 0.5*x3; 270 A[1][0] = -0.5*y1 + 0.5*y2; A[1][1] = -0.5*y1 + 0.5*y3; 271 272 detJ = A[0][0]*A[1][1] - A[0][1]*A[1][0]; 273 *dJ = PetscAbsReal(detJ); 274 od = 1.0/detJ; 275 276 inv[0][0] = A[1][1] * od; 277 inv[0][1] = -A[0][1] * od; 278 inv[1][0] = -A[1][0] * od; 279 inv[1][1] = A[0][0] * od; 280 281 xip[0] = inv[0][0]*b[0] + inv[0][1]*b[1]; 282 xip[1] = inv[1][0]*b[0] + inv[1][1]*b[1]; 283 PetscFunctionReturn(0); 284 } 285 */ 286 287 static PetscErrorCode ComputeLocalCoordinateAffine2d(PetscReal xp[],PetscScalar coords[],PetscReal xip[],PetscReal *dJ) 288 { 289 PetscReal x1,y1,x2,y2,x3,y3; 290 PetscReal b[2],A[2][2],inv[2][2],detJ,od; 291 292 PetscFunctionBegin; 293 x1 = PetscRealPart(coords[2*0+0]); 294 x2 = PetscRealPart(coords[2*1+0]); 295 x3 = PetscRealPart(coords[2*2+0]); 296 297 y1 = PetscRealPart(coords[2*0+1]); 298 y2 = PetscRealPart(coords[2*1+1]); 299 y3 = PetscRealPart(coords[2*2+1]); 300 301 b[0] = xp[0] - x1; 302 b[1] = xp[1] - y1; 303 304 A[0][0] = x2-x1; A[0][1] = x3-x1; 305 A[1][0] = y2-y1; A[1][1] = y3-y1; 306 307 detJ = A[0][0]*A[1][1] - A[0][1]*A[1][0]; 308 *dJ = PetscAbsReal(detJ); 309 od = 1.0/detJ; 310 311 inv[0][0] = A[1][1] * od; 312 inv[0][1] = -A[0][1] * od; 313 inv[1][0] = -A[1][0] * od; 314 inv[1][1] = A[0][0] * od; 315 316 xip[0] = inv[0][0]*b[0] + inv[0][1]*b[1]; 317 xip[1] = inv[1][0]*b[0] + inv[1][1]*b[1]; 318 PetscFunctionReturn(0); 319 } 320 321 PetscErrorCode DMSwarmProjectField_ApproxP1_PLEX_2D(DM swarm,PetscReal *swarm_field,DM dm,Vec v_field) 322 { 323 PetscErrorCode ierr; 324 const PetscReal PLEX_C_EPS = 1.0e-8; 325 Vec v_field_l,denom_l,coor_l,denom; 326 PetscInt k,p,e,npoints; 327 PetscInt *mpfield_cell; 328 PetscReal *mpfield_coor; 329 PetscReal xi_p[2]; 330 PetscScalar Ni[3]; 331 PetscSection coordSection; 332 PetscScalar *elcoor = NULL; 333 334 PetscFunctionBegin; 335 ierr = VecZeroEntries(v_field);CHKERRQ(ierr); 336 337 ierr = DMGetLocalVector(dm,&v_field_l);CHKERRQ(ierr); 338 ierr = DMGetGlobalVector(dm,&denom);CHKERRQ(ierr); 339 ierr = DMGetLocalVector(dm,&denom_l);CHKERRQ(ierr); 340 ierr = VecZeroEntries(v_field_l);CHKERRQ(ierr); 341 ierr = VecZeroEntries(denom);CHKERRQ(ierr); 342 ierr = VecZeroEntries(denom_l);CHKERRQ(ierr); 343 344 ierr = DMGetCoordinatesLocal(dm,&coor_l);CHKERRQ(ierr); 345 ierr = DMGetCoordinateSection(dm,&coordSection);CHKERRQ(ierr); 346 347 ierr = DMSwarmGetLocalSize(swarm,&npoints);CHKERRQ(ierr); 348 ierr = DMSwarmGetField(swarm,DMSwarmPICField_coor,NULL,NULL,(void**)&mpfield_coor);CHKERRQ(ierr); 349 ierr = DMSwarmGetField(swarm,DMSwarmPICField_cellid,NULL,NULL,(void**)&mpfield_cell);CHKERRQ(ierr); 350 351 for (p=0; p<npoints; p++) { 352 PetscReal *coor_p,dJ; 353 PetscScalar elfield[3]; 354 PetscBool point_located; 355 356 e = mpfield_cell[p]; 357 coor_p = &mpfield_coor[2*p]; 358 359 ierr = DMPlexVecGetClosure(dm,coordSection,coor_l,e,NULL,&elcoor);CHKERRQ(ierr); 360 361 /* 362 while (!point_located && (failed_counter < 25)) { 363 ierr = PointInTriangle(point, coords[0], coords[1], coords[2], &point_located);CHKERRQ(ierr); 364 point.x = coor_p[0]; 365 point.y = coor_p[1]; 366 point.x += 1.0e-10 * (2.0 * rand()/((double)RAND_MAX)-1.0); 367 point.y += 1.0e-10 * (2.0 * rand()/((double)RAND_MAX)-1.0); 368 failed_counter++; 369 } 370 371 if (!point_located){ 372 PetscPrintf(PETSC_COMM_SELF,"Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D) with triangle coords (%1.8e,%1.8e) : (%1.8e,%1.8e) : (%1.8e,%1.8e) in %D iterations\n",point.x,point.y,e,coords[0].x,coords[0].y,coords[1].x,coords[1].y,coords[2].x,coords[2].y,failed_counter); 373 } 374 375 if (!point_located) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_SUP,"Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D)\n",point.x,point.y,e); 376 else { 377 ierr = _ComputeLocalCoordinateAffine2d(coor_p,elcoor,xi_p,&dJ);CHKERRQ(ierr); 378 xi_p[0] = 0.5*(xi_p[0] + 1.0); 379 xi_p[1] = 0.5*(xi_p[1] + 1.0); 380 381 PetscPrintf(PETSC_COMM_SELF,"[p=%D] x(%+1.4e,%+1.4e) -> mapped to element %D xi(%+1.4e,%+1.4e)\n",p,point.x,point.y,e,xi_p[0],xi_p[1]); 382 383 } 384 */ 385 386 ierr = ComputeLocalCoordinateAffine2d(coor_p,elcoor,xi_p,&dJ);CHKERRQ(ierr); 387 /* 388 PetscPrintf(PETSC_COMM_SELF,"[p=%D] x(%+1.4e,%+1.4e) -> mapped to element %D xi(%+1.4e,%+1.4e)\n",p,point.x,point.y,e,xi_p[0],xi_p[1]); 389 */ 390 /* 391 point_located = PETSC_TRUE; 392 if (xi_p[0] < 0.0) { 393 if (xi_p[0] > -PLEX_C_EPS) { 394 xi_p[0] = 0.0; 395 } else { 396 point_located = PETSC_FALSE; 397 } 398 } 399 if (xi_p[1] < 0.0) { 400 if (xi_p[1] > -PLEX_C_EPS) { 401 xi_p[1] = 0.0; 402 } else { 403 point_located = PETSC_FALSE; 404 } 405 } 406 if (xi_p[1] > (1.0-xi_p[0])) { 407 if ((xi_p[1] - 1.0 + xi_p[0]) < PLEX_C_EPS) { 408 xi_p[1] = 1.0 - xi_p[0]; 409 } else { 410 point_located = PETSC_FALSE; 411 } 412 } 413 if (!point_located){ 414 PetscPrintf(PETSC_COMM_SELF,"[Error] xi,eta = %+1.8e, %+1.8e\n",xi_p[0],xi_p[1]); 415 PetscPrintf(PETSC_COMM_SELF,"[Error] Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D) with triangle coords (%1.8e,%1.8e) : (%1.8e,%1.8e) : (%1.8e,%1.8e)\n",coor_p[0],coor_p[1],e,elcoor[0],elcoor[1],elcoor[2],elcoor[3],elcoor[4],elcoor[5]); 416 } 417 if (!point_located) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_SUP,"Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D)\n",coor_p[0],coor_p[1],e); 418 */ 419 420 Ni[0] = 1.0 - xi_p[0] - xi_p[1]; 421 Ni[1] = xi_p[0]; 422 Ni[2] = xi_p[1]; 423 424 point_located = PETSC_TRUE; 425 for (k=0; k<3; k++) { 426 if (PetscRealPart(Ni[k]) < -PLEX_C_EPS) point_located = PETSC_FALSE; 427 if (PetscRealPart(Ni[k]) > (1.0+PLEX_C_EPS)) point_located = PETSC_FALSE; 428 } 429 if (!point_located){ 430 PetscPrintf(PETSC_COMM_SELF,"[Error] xi,eta = %+1.8e, %+1.8e\n",(double)xi_p[0],(double)xi_p[1]); 431 PetscPrintf(PETSC_COMM_SELF,"[Error] Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D) with triangle coords (%1.8e,%1.8e) : (%1.8e,%1.8e) : (%1.8e,%1.8e)\n",(double)coor_p[0],(double)coor_p[1],e,(double)PetscRealPart(elcoor[0]),(double)PetscRealPart(elcoor[1]),(double)PetscRealPart(elcoor[2]),(double)PetscRealPart(elcoor[3]),(double)PetscRealPart(elcoor[4]),(double)PetscRealPart(elcoor[5])); 432 } 433 if (!point_located) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_SUP,"Failed to locate point (%1.8e,%1.8e) in local mesh (cell %D)\n",(double)coor_p[0],(double)coor_p[1],e); 434 435 for (k=0; k<3; k++) { 436 Ni[k] = Ni[k] * dJ; 437 elfield[k] = Ni[k] * swarm_field[p]; 438 } 439 440 ierr = DMPlexVecRestoreClosure(dm,coordSection,coor_l,e,NULL,&elcoor);CHKERRQ(ierr); 441 442 ierr = DMPlexVecSetClosure(dm, NULL,v_field_l, e, elfield, ADD_VALUES);CHKERRQ(ierr); 443 ierr = DMPlexVecSetClosure(dm, NULL,denom_l, e, Ni, ADD_VALUES);CHKERRQ(ierr); 444 } 445 446 ierr = DMSwarmRestoreField(swarm,DMSwarmPICField_cellid,NULL,NULL,(void**)&mpfield_cell);CHKERRQ(ierr); 447 ierr = DMSwarmRestoreField(swarm,DMSwarmPICField_coor,NULL,NULL,(void**)&mpfield_coor);CHKERRQ(ierr); 448 449 ierr = DMLocalToGlobalBegin(dm,v_field_l,ADD_VALUES,v_field);CHKERRQ(ierr); 450 ierr = DMLocalToGlobalEnd(dm,v_field_l,ADD_VALUES,v_field);CHKERRQ(ierr); 451 ierr = DMLocalToGlobalBegin(dm,denom_l,ADD_VALUES,denom);CHKERRQ(ierr); 452 ierr = DMLocalToGlobalEnd(dm,denom_l,ADD_VALUES,denom);CHKERRQ(ierr); 453 454 ierr = VecPointwiseDivide(v_field,v_field,denom);CHKERRQ(ierr); 455 456 ierr = DMRestoreLocalVector(dm,&v_field_l);CHKERRQ(ierr); 457 ierr = DMRestoreLocalVector(dm,&denom_l);CHKERRQ(ierr); 458 ierr = DMRestoreGlobalVector(dm,&denom);CHKERRQ(ierr); 459 460 PetscFunctionReturn(0); 461 } 462 463 PetscErrorCode private_DMSwarmProjectFields_PLEX(DM swarm,DM celldm,PetscInt project_type,PetscInt nfields,DataField dfield[],Vec vecs[]) 464 { 465 PetscErrorCode ierr; 466 PetscInt f,dim; 467 468 PetscFunctionBegin; 469 ierr = DMGetDimension(swarm,&dim);CHKERRQ(ierr); 470 switch (dim) { 471 case 2: 472 for (f=0; f<nfields; f++) { 473 PetscReal *swarm_field; 474 475 ierr = DataFieldGetEntries(dfield[f],(void**)&swarm_field);CHKERRQ(ierr); 476 ierr = DMSwarmProjectField_ApproxP1_PLEX_2D(swarm,swarm_field,celldm,vecs[f]);CHKERRQ(ierr); 477 } 478 break; 479 case 3: 480 SETERRQ(PetscObjectComm((PetscObject)swarm),PETSC_ERR_SUP,"No support for 3D"); 481 break; 482 default: 483 break; 484 } 485 486 PetscFunctionReturn(0); 487 } 488