Skip to content
Snippets Groups Projects
polyMeshFromShapeMesh.C 17.2 KiB
Newer Older
  • Learn to ignore specific revisions
  • /*---------------------------------------------------------------------------*\
      =========                 |
      \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
       \\    /   O peration     |
    
        \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
    
    6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622
         \\/     M anipulation  |
    -------------------------------------------------------------------------------
    License
        This file is part of OpenFOAM.
    
        OpenFOAM is free software; you can redistribute it and/or modify it
        under the terms of the GNU General Public License as published by the
        Free Software Foundation; either version 2 of the License, or (at your
        option) any later version.
    
        OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
        ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
        FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
        for more details.
    
        You should have received a copy of the GNU General Public License
        along with OpenFOAM; if not, write to the Free Software Foundation,
        Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
    
    Description
        Create polyMesh from cell and patch shapes
    
    \*---------------------------------------------------------------------------*/
    
    #include "polyMesh.H"
    #include "Time.H"
    #include "primitiveMesh.H"
    #include "DynamicList.H"
    
    // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
    
    Foam::labelListList Foam::polyMesh::cellShapePointCells
    (
        const cellShapeList& c
    ) const
    {
        List<DynamicList<label, primitiveMesh::cellsPerPoint_> > 
            pc(points().size());
    
        // For each cell
        forAll(c, i)
        {
            // For each vertex
            const labelList& labels = c[i];
    
            forAll(labels, j)
            {
                // Set working point label
                label curPoint = labels[j];
                DynamicList<label, primitiveMesh::cellsPerPoint_>& curPointCells =
                    pc[curPoint];
    
                // Enter the cell label in the point's cell list
                curPointCells.append(i);
            }
        }
    
        labelListList pointCellAddr(pc.size());
    
        forAll (pc, pointI)
        {
            pointCellAddr[pointI].transfer(pc[pointI].shrink());
        }
    
        return pointCellAddr;
    }
    
    
    Foam::labelList Foam::polyMesh::facePatchFaceCells
    (
        const faceList& patchFaces,
        const labelListList& pointCells,
        const faceListList& cellsFaceShapes,
        const label patchID
    ) const
    {
        register bool found;
    
        labelList FaceCells(patchFaces.size());
    
        forAll(patchFaces, fI)
        {
            found = false;
    
            const face& curFace = patchFaces[fI];
            const labelList& facePoints = patchFaces[fI];
    
            forAll(facePoints, pointI)
            {
                const labelList& facePointCells = pointCells[facePoints[pointI]];
    
                forAll(facePointCells, cellI)
                {
                    faceList cellFaces = cellsFaceShapes[facePointCells[cellI]];
    
                    forAll(cellFaces, cellFace)
                    {
                        if (cellFaces[cellFace] == curFace)
                        {
                            // Found the cell corresponding to this face
                            FaceCells[fI] = facePointCells[cellI];
    
                            found = true;
                        }
                        if (found) break;
                    }
                    if (found) break;
                }
                if (found) break;
            }
    
            if (!found)
            {
                FatalErrorIn
                (
                    "polyMesh::facePatchFaceCells(const faceList& patchFaces,"
                    "const labelListList& pointCells,"
                    "const faceListList& cellsFaceShapes,"
                    "const label patchID)"
                )   << "face " << fI << " in patch " << patchID
                    << " does not have neighbour cell"
                    << " face: " << patchFaces[fI]
                    << abort(FatalError);
            }
        }
    
        return FaceCells;
    }
    
    
    Foam::polyMesh::polyMesh
    (
        const IOobject& io,
        const pointField& points,
        const cellShapeList& cellsAsShapes,
        const faceListList& boundaryFaces,
        const wordList& boundaryPatchNames,
        const wordList& boundaryPatchTypes,
        const word& defaultBoundaryPatchName,
        const word& defaultBoundaryPatchType,
        const wordList& boundaryPatchPhysicalTypes,
        const bool syncPar
    )
    :
        objectRegistry(io),
        primitiveMesh(),
        points_
        (
            IOobject
            (
                "points",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::AUTO_WRITE
            ),
            points
        ),
        faces_
        (
            IOobject
            (
                "faces",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::AUTO_WRITE
            ),
            0
        ),
        owner_
        (
            IOobject
            (
                "owner",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::AUTO_WRITE
            ),
            0
        ),
        neighbour_
        (
            IOobject
            (
                "neighbour",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::AUTO_WRITE
            ),
            0
        ),
        clearedPrimitives_(false),
        boundary_
        (
            IOobject
            (
                "boundary",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::AUTO_WRITE
            ),
            *this,
            boundaryFaces.size() + 1    // add room for a default patch
        ),
        bounds_(points_, syncPar),
        directions_(Vector<label>::zero),
        pointZones_
        (
            IOobject
            (
                "pointZones",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            *this,
            0
        ),
        faceZones_
        (
            IOobject
            (
                "faceZones",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            *this,
            0
        ),
        cellZones_
        (
            IOobject
            (
                "cellZones",
                instance(),
                meshSubDir,
                *this,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            *this,
            0
        ),
        globalMeshDataPtr_(NULL),
        moving_(false),
        curMotionTimeIndex_(time().timeIndex()),
        oldPointsPtr_(NULL)
    {
        if (debug)
        {
            Info<<"Constructing polyMesh from cell and boundary shapes." << endl;
        }
    
        // Remove all of the old mesh files if they exist
        removeFiles(instance());
    
        // Calculate the faces of all cells
        // Initialise maximum possible numer of mesh faces to 0
        label maxFaces = 0;
    
        // Set up a list of face shapes for each cell
        faceListList cellsFaceShapes(cellsAsShapes.size());
        cellList cells(cellsAsShapes.size());
    
        forAll(cellsFaceShapes, cellI)
        {
            cellsFaceShapes[cellI] = cellsAsShapes[cellI].faces();
    
            cells[cellI].setSize(cellsFaceShapes[cellI].size());
    
            // Initialise cells to -1 to flag undefined faces
            static_cast<labelList&>(cells[cellI]) = -1;
    
            // Count maximum possible numer of mesh faces
            maxFaces += cellsFaceShapes[cellI].size();
        }
    
        // Set size of faces array to maximum possible number of mesh faces
        faces_.setSize(maxFaces);
    
        // Initialise number of faces to 0
        label nFaces = 0;
    
        // set reference to point-cell addressing
        labelListList PointCells = cellShapePointCells(cellsAsShapes);
    
        bool found = false;
    
        forAll(cells, cellI)
        {
            // Note:
            // Insertion cannot be done in one go as the faces need to be
            // added into the list in the increasing order of neighbour
            // cells.  Therefore, all neighbours will be detected first
            // and then added in the correct order.  
    
            const faceList& curFaces = cellsFaceShapes[cellI];
    
            // Record the neighbour cell
            labelList neiCells(curFaces.size(), -1);
    
            // Record the face of neighbour cell
            labelList faceOfNeiCell(curFaces.size(), -1);
    
            label nNeighbours = 0;
    
            // For all faces ...
            forAll(curFaces, faceI)
            {
                // Skip faces that have already been matched
                if (cells[cellI][faceI] >= 0) continue;
    
                found = false;
    
                const face& curFace = curFaces[faceI];
    
                // Get the list of labels
                const labelList& curPoints = curFace;
    
                // For all points
                forAll(curPoints, pointI)
                {
                    // dGget the list of cells sharing this point
                    const labelList& curNeighbours =
                        PointCells[curPoints[pointI]];
    
                    // For all neighbours
                    forAll(curNeighbours, neiI)
                    {
                        label curNei = curNeighbours[neiI];
    
                        // Reject neighbours with the lower label
                        if (curNei > cellI)
                        {
                            // Get the list of search faces
                            const faceList& searchFaces = cellsFaceShapes[curNei];
    
                            forAll(searchFaces, neiFaceI)
                            {
                                if (searchFaces[neiFaceI] == curFace)
                                {
                                    // Match!!
                                    found = true;
    
                                    // Record the neighbour cell and face
                                    neiCells[faceI] = curNei;
                                    faceOfNeiCell[faceI] = neiFaceI;
                                    nNeighbours++;
    
                                    break;
                                }
                            }
                            if (found) break;
                        }
                        if (found) break;
                    }
                    if (found) break;
                } // End of current points
            }  // End of current faces
    
            // Add the faces in the increasing order of neighbours
            for (label neiSearch = 0; neiSearch < nNeighbours; neiSearch++)
            {
                // Find the lowest neighbour which is still valid
                label nextNei = -1;
                label minNei = cells.size();
    
                forAll (neiCells, ncI)
                {
                    if (neiCells[ncI] > -1 && neiCells[ncI] < minNei)
                    {
                        nextNei = ncI;
                        minNei = neiCells[ncI];
                    }
                }
    
                if (nextNei > -1)
                {
                    // Add the face to the list of faces
                    faces_[nFaces] = curFaces[nextNei];
    
                    // Set cell-face and cell-neighbour-face to current face label
                    cells[cellI][nextNei] = nFaces;
                    cells[neiCells[nextNei]][faceOfNeiCell[nextNei]] = nFaces;
    
                    // Stop the neighbour from being used again
                    neiCells[nextNei] = -1;
    
                    // Increment number of faces counter
                    nFaces++;
                }
                else
                {
                    FatalErrorIn
                    (
                        "polyMesh::polyMesh\n"
                        "(\n"
                        "    const IOobject& io,\n"
                        "    const pointField& points,\n"
                        "    const cellShapeList& cellsAsShapes,\n"
                        "    const faceListList& boundaryFaces,\n"
                        "    const wordList& boundaryPatchTypes,\n"
                        "    const wordList& boundaryPatchNames,\n"
                        "    const word& defaultBoundaryPatchType\n"
                        ")"
                    )   << "Error in internal face insertion"
                        << abort(FatalError);
                }
            }
        }
    
        // Do boundary faces
    
        labelList patchSizes(boundaryFaces.size(), -1);
        labelList patchStarts(boundaryFaces.size(), -1);
    
        forAll (boundaryFaces, patchI)
        {
            const faceList& patchFaces = boundaryFaces[patchI];
    
            labelList curPatchFaceCells =
                facePatchFaceCells
                (
                    patchFaces,
                    PointCells,
                    cellsFaceShapes,
                    patchI
                );
    
            // Grab the start label
            label curPatchStart = nFaces;
    
            forAll (patchFaces, faceI)
            {
                const face& curFace = patchFaces[faceI];
    
                const label cellInside = curPatchFaceCells[faceI];
    
                faces_[nFaces] = curFace;
    
                // get faces of the cell inside
                const faceList& facesOfCellInside = cellsFaceShapes[cellInside];
    
                bool found = false;
    
                forAll (facesOfCellInside, cellFaceI)
                {
                    if (facesOfCellInside[cellFaceI] == curFace)
                    {
                        if (cells[cellInside][cellFaceI] >= 0)
                        {
                            FatalErrorIn
                            (
                                "polyMesh::polyMesh\n"
                                "(\n"
                                "    const IOobject& io,\n"
                                "    const pointField& points,\n"
                                "    const cellShapeList& cellsAsShapes,\n"
                                "    const faceListList& boundaryFaces,\n"
                                "    const wordList& boundaryPatchTypes,\n"
                                "    const wordList& boundaryPatchNames,\n"
                                "    const word& defaultBoundaryPatchType\n"
                                ")"
                            )   << "Trying to specify a boundary face " << curFace
                                << " on the face on cell " << cellInside
                                << " which is either an internal face or already "
                                << "belongs to some other patch.  This is face "
                                << faceI << " of patch "
                                << patchI << " named "
                                << boundaryPatchNames[patchI] << "."
                                << abort(FatalError);
                        }
    
                        found = true;
    
                        cells[cellInside][cellFaceI] = nFaces;
    
                        break;
                    }
                }
    
                if (!found)
                {
                    FatalErrorIn("polyMesh::polyMesh(... construct from shapes...)")
                        << "face " << faceI << " of patch " << patchI
                        << " does not seem to belong to cell " << cellInside
                        << " which, according to the addressing, "
                        << "should be next to it."
                        << abort(FatalError);
                }
    
                // increment the counter of faces
                nFaces++;
            }
    
            patchSizes[patchI] = nFaces - curPatchStart;
            patchStarts[patchI] = curPatchStart;
        }
    
        // Grab "non-existing" faces and put them into a default patch
    
        label defaultPatchStart = nFaces;
    
        forAll(cells, cellI)
        {
            labelList& curCellFaces = cells[cellI];
    
            forAll(curCellFaces, faceI)
            {
                if (curCellFaces[faceI] == -1) // "non-existent" face
                {
                    curCellFaces[faceI] = nFaces;
                    faces_[nFaces] = cellsFaceShapes[cellI][faceI];
    
                    nFaces++;
                }
            }
        }
    
        // Reset the size of the face list
        faces_.setSize(nFaces);
    
        // Warning: Patches can only be added once the face list is
        // completed, as they hold a subList of the face list
        forAll (boundaryFaces, patchI)
        {
            // add the patch to the list
            boundary_.set
            (
                patchI,
                polyPatch::New
                (
                    boundaryPatchTypes[patchI],
                    boundaryPatchNames[patchI],
                    patchSizes[patchI],
                    patchStarts[patchI],
                    patchI,
                    boundary_
                )
            );
    
            if
            (
                boundaryPatchPhysicalTypes.size()
             && boundaryPatchPhysicalTypes[patchI].size()
            )
            {
                boundary_[patchI].physicalType() =
                    boundaryPatchPhysicalTypes[patchI];
            }
        }
    
        label nAllPatches = boundaryFaces.size();
    
        if (nFaces > defaultPatchStart)
        {
            WarningIn("polyMesh::polyMesh(... construct from shapes...)")
                << "Found " << nFaces - defaultPatchStart
                << " undefined faces in mesh; adding to default patch." << endl;
    
            boundary_.set
            (
                nAllPatches,
                polyPatch::New
                (
                    defaultBoundaryPatchType,
                    defaultBoundaryPatchName,
                    nFaces - defaultPatchStart,
                    defaultPatchStart,
                    boundary_.size() - 1,
                    boundary_
                )
            );
    
            nAllPatches++;
        }
    
        // Reset the size of the boundary
        boundary_.setSize(nAllPatches);
    
        // Set the primitive mesh
        initMesh(cells);
    
        if (syncPar)
        {
            // Calculate topology for the patches (processor-processor comms etc.)
            boundary_.updateMesh();
    
            // Calculate the geometry for the patches (transformation tensors etc.)
            boundary_.calcGeometry();
        }
    
        if (debug)
        {
            if (checkMesh())
            {
                Info << "Mesh OK" << endl;
            }
        }
    }
    
    
    // ************************************************************************* //