226 lines
6.9 KiB
C++
226 lines
6.9 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | cfMesh: A library for mesh generation
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\\ / O peration |
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\\ / A nd | Author: Franjo Juretic (franjo.juretic@c-fields.com)
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\\/ M anipulation | Copyright (C) Creative Fields, Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of cfMesh.
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cfMesh is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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cfMesh is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with cfMesh. If not, see <http://www.gnu.org/licenses/>.
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Description
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Reads the specified surface and writes it in the fms format.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "IFstream.H"
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#include "fileName.H"
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#include "triSurf.H"
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#include "triSurfaceChecks.H"
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#include "boundBox.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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using namespace Foam;
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int main(int argc, char *argv[])
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{
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argList::noParallel();
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argList::validArgs.clear();
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argList::validArgs.append("input surface file");
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argList args(argc, argv);
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const fileName inFileName(args.args()[1]);
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triSurf surf(inFileName);
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label nFailed(0);
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boundBox bb;
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triSurfaceChecks::calculateBoundingBox(surf, bb);
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Info << "\nNumber of points " << surf.nPoints() << endl;
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Info << "Number of triangles " << surf.size() << endl;
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Info << "Number of patches " << surf.patches().size() << endl;
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Info << "Number of feature edges " << surf.nFeatureEdges() << endl;
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Info << "Bounding box " << bb << nl << nl << endl;
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const scalar distTol = SMALL * bb.mag();
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//- calculate manifolds
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const label nManifolds = triSurfaceChecks::checkSurfaceManifolds(surf);
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if( nManifolds > 1 )
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{
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++nFailed;
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Info << "\nSurface mesh consists of " << nManifolds
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<< " manifolds!!" << endl;
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Info << "You cannot mesh geometries consisting of more than"
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<< " one domain, and it must not contain baffles"
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<< " in the domain which shall be meshed." << endl;
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}
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else
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{
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Info << "\nSurface mesh consists of a single manifold." << endl;
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}
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//- find open boundary edges
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if( triSurfaceChecks::checkForHoles(surf) )
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{
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++nFailed;
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Info << "\nSurface mesh has open boundaries!!" << endl;
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Info << "This indicates that there may be some holes in the surface"
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<< " mesh. Holes in the mesh must be smaller than the specified"
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<< " cell size at this location. In addition, please avoid"
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<< " using the automatic refinement procedure."
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<< " Please avoid using the minCellSize option." << endl;
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}
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else
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{
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Info << "No open edges found in the surface mesh." << endl;
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}
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//- find non-manifold edges
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if( triSurfaceChecks::checkForNonManifoldEdges(surf) )
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{
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++nFailed;
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Info << "\nSurface mesh has non-manifold edges!!" << endl;
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Info << "This indicates that the surface mesh consists of multiple"
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<< " domains and/or baffles. Please make sure that they are not"
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<< " in the domain which shall be meshed." << endl;
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}
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else
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{
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Info << "Surface does not have any non-manifold edges." << endl;
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}
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//- check the number of disconnected parts
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if( triSurfaceChecks::checkDisconnectedParts(surf) > 1 )
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{
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++nFailed;
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Info << "\nSurface mesh consists of disconnected parts!!" << endl;
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Info << "This is not a problem if there exists a region surrounding"
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<< " all other regions! In other case, the mesher will generate"
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<< " the mesh in the domains with most cells." << endl;
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}
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else
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{
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Info << "Surface mesh consists of a single region." << endl;
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}
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//- find triangles with small angles
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if( triSurfaceChecks::checkAngles(surf, "smallAngles", 1.0) )
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{
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++nFailed;
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Info << "\nSurface mesh has some bad-quality triangles with"
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<< " angles smaller than 1.0 deg!!" << endl;
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Info << "This may cause problems to the automatic refinement"
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<< " procedure. Please avoid using the minCellSize option."
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<< endl;
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}
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else
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{
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Info << "No sliver triangles found." << endl;
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}
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//- find self-intersections in the surface mesh
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if
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(
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triSurfaceChecks::checkSelfIntersections
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(
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surf,
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"selfIntersect",
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distTol
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)
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)
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{
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++nFailed;
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Info << "\nFound self-intersecting parts in the surface mesh!!" << endl;
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Info << "This causes problems to the automatic refinement procedure"
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<< " Please avoid using the minCellSize option."
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<< " It can also cause problems to the boundary layer"
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<< " generation procedure." << endl;
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}
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else
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{
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Info << "No self-intersections found." << endl;
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}
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//- find overlaps in the surface mesh
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if
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(
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triSurfaceChecks::checkOverlaps
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(
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surf,
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"overlaps",
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distTol,
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5.0
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)
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)
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{
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++nFailed;
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Info << "\nFound overlapping parts in the surface mesh!!" << endl;
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Info << "This causes problems to the automatic refinement procedure."
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<< " Please avoid using the minCellSize option." << endl;
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}
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//- check for existence of collocated points
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if
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(
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triSurfaceChecks::checkCollocatedPoints
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(
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surf,
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"collocatedPoints",
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distTol
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)
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)
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{
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++nFailed;
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Info << "\nFound collocated points in the surface mesh!!" << endl;
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Info << "This causes problems to the automatic refinement procedure."
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<< " Please avoid using the minCellSize option." << endl;
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}
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Info << nl << endl;
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if( nFailed )
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{
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Info << "\nFound " << nFailed
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<< " checks indicating potential problems." << endl;
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Info << "However, it does not mean that you cannot generate"
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<< " a valid mesh.\n" << endl;
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surf.writeSurface(inFileName);
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}
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else
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{
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Info << "\nSurface passes all checks.\n" << endl;
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}
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Info << "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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