276 lines
9.2 KiB
C
276 lines
9.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM 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 2 of the License, or (at your
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option) any later version.
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OpenFOAM 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 OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Description
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Construct an extruded hex cell shape from four straight edges
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\*---------------------------------------------------------------------------*/
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#include "cellShapeRecognition.H"
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#include "labelList.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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cellShape extrudedQuadCellShape
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(
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const label cellIndex,
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const labelList& faceLabels,
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const faceList& faces,
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const labelList& owner,
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const labelList& neighbour,
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const label pointOffset,
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faceList& frontAndBackFaces
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)
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{
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const static cellModel* hexModelPtr_ = NULL;
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if (!hexModelPtr_)
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{
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hexModelPtr_ = cellModeller::lookup("hex");
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}
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const cellModel& hex = *hexModelPtr_;
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// Checking
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if (faceLabels.size() != 4)
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{
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FatalErrorIn
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(
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"extrudedQuadCellShape(const label cellIndex, "
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"const labelList& faceLabels, const faceList& faces, "
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"const labelList& owner, const labelList& neighbour, "
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"const label pointOffset, faceList& frontAndBackFaces)"
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) << "Trying to create a quad with " << faceLabels.size() << " faces"
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<< abort(FatalError);
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}
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// make a list of outward-pointing faces
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labelListList localFaces(4);
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forAll (faceLabels, faceI)
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{
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const label curFaceLabel = faceLabels[faceI];
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const face& curFace = faces[curFaceLabel];
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if (curFace.size() != 2)
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{
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FatalErrorIn
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(
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"extrudedQuadCellShape(const label cellIndex, "
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"const labelList& faceLabels, const faceList& faces, "
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"const labelList& owner, const labelList& neighbour, "
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"const label pointOffset, faceList& frontAndBackFaces)"
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) << "face " << curFaceLabel
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<< "does not have 2 vertices. Number of vertices: " << curFace
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<< abort(FatalError);
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}
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if (owner[curFaceLabel] == cellIndex)
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{
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localFaces[faceI] = curFace;
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}
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else if (neighbour[curFaceLabel] == cellIndex)
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{
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// Reverse the face. Note: it is necessary to reverse by
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// hand to preserve connectivity of a 2-D mesh.
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//
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localFaces[faceI].setSize(curFace.size());
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forAllReverse(curFace, i)
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{
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localFaces[faceI][curFace.size() - i - 1] =
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curFace[i];
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}
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}
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else
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{
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FatalErrorIn
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(
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"extrudedQuadCellShape(const label cellIndex, "
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"const labelList& faceLabels, const faceList& faces, "
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"const labelList& owner, const labelList& neighbour, "
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"const label pointOffset, faceList& frontAndBackFaces)"
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) << "face " << curFaceLabel
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<< " does not belong to cell " << cellIndex
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<< ". Face owner: " << owner[curFaceLabel] << " neighbour: "
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<< neighbour[curFaceLabel]
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<< abort(FatalError);
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}
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}
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// Create a label list for the model
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// This is done by finding two edges that do not share any vertices.
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// Knowing the opposite pair of edges (with normals poining outward
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// is enough to make a cell
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if
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(
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localFaces[0][0] != localFaces[1][1]
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&& localFaces[0][1] != localFaces[1][0]
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)
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{
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// Set front and back plane faces
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labelList missingPlaneFace(4);
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// front plane
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missingPlaneFace[0] = localFaces[0][0];
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missingPlaneFace[1] = localFaces[1][1];
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missingPlaneFace[2] = localFaces[1][0];
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missingPlaneFace[3] = localFaces[0][1];
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frontAndBackFaces[2*cellIndex] = face(missingPlaneFace);
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// back plane
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missingPlaneFace[0] = localFaces[0][0] + pointOffset;
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missingPlaneFace[1] = localFaces[0][1] + pointOffset;
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missingPlaneFace[2] = localFaces[1][0] + pointOffset;
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missingPlaneFace[3] = localFaces[1][1] + pointOffset;
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frontAndBackFaces[2*cellIndex + 1] = face(missingPlaneFace);
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// make a cell
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labelList cellShapeLabels(8);
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cellShapeLabels[0] = localFaces[0][0];
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cellShapeLabels[1] = localFaces[0][1];
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cellShapeLabels[2] = localFaces[1][0];
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cellShapeLabels[3] = localFaces[1][1];
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cellShapeLabels[4] = localFaces[0][0] + pointOffset;
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cellShapeLabels[5] = localFaces[0][1] + pointOffset;
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cellShapeLabels[6] = localFaces[1][0] + pointOffset;
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cellShapeLabels[7] = localFaces[1][1] + pointOffset;
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return cellShape(hex, cellShapeLabels);
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}
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else if
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(
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localFaces[0][0] != localFaces[2][1]
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&& localFaces[0][1] != localFaces[2][0]
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)
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{
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// Set front and back plane faces
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labelList missingPlaneFace(4);
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// front plane
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missingPlaneFace[0] = localFaces[0][0];
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missingPlaneFace[1] = localFaces[2][1];
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missingPlaneFace[2] = localFaces[2][0];
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missingPlaneFace[3] = localFaces[0][1];
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frontAndBackFaces[2*cellIndex] = face(missingPlaneFace);
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// back plane
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missingPlaneFace[0] = localFaces[0][0] + pointOffset;
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missingPlaneFace[1] = localFaces[0][1] + pointOffset;
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missingPlaneFace[2] = localFaces[2][0] + pointOffset;
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missingPlaneFace[3] = localFaces[2][1] + pointOffset;
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frontAndBackFaces[2*cellIndex + 1] = face(missingPlaneFace);
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// make a cell
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labelList cellShapeLabels(8);
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cellShapeLabels[0] = localFaces[0][0];
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cellShapeLabels[1] = localFaces[0][1];
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cellShapeLabels[2] = localFaces[2][0];
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cellShapeLabels[3] = localFaces[2][1];
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cellShapeLabels[4] = localFaces[0][0] + pointOffset;
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cellShapeLabels[5] = localFaces[0][1] + pointOffset;
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cellShapeLabels[6] = localFaces[2][0] + pointOffset;
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cellShapeLabels[7] = localFaces[2][1] + pointOffset;
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return cellShape(hex, cellShapeLabels);
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}
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else if
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(
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localFaces[0][0] != localFaces[3][1]
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&& localFaces[0][1] != localFaces[3][0]
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)
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{
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// Set front and back plane faces
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labelList missingPlaneFace(4);
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// front plane
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missingPlaneFace[0] = localFaces[0][0];
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missingPlaneFace[1] = localFaces[3][1];
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missingPlaneFace[2] = localFaces[3][0];
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missingPlaneFace[3] = localFaces[0][1];
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frontAndBackFaces[2*cellIndex] = face(missingPlaneFace);
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// back plane
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missingPlaneFace[0] = localFaces[0][0] + pointOffset;
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missingPlaneFace[1] = localFaces[0][1] + pointOffset;
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missingPlaneFace[2] = localFaces[3][0] + pointOffset;
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missingPlaneFace[3] = localFaces[3][1] + pointOffset;
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frontAndBackFaces[2*cellIndex + 1] = face(missingPlaneFace);
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// make a cell
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labelList cellShapeLabels(8);
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cellShapeLabels[0] = localFaces[0][0];
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cellShapeLabels[1] = localFaces[0][1];
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cellShapeLabels[2] = localFaces[3][0];
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cellShapeLabels[3] = localFaces[3][1];
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cellShapeLabels[4] = localFaces[0][0] + pointOffset;
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cellShapeLabels[5] = localFaces[0][1] + pointOffset;
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cellShapeLabels[6] = localFaces[3][0] + pointOffset;
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cellShapeLabels[7] = localFaces[3][1] + pointOffset;
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return cellShape(hex, cellShapeLabels);
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}
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else
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{
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FatalErrorIn
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(
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"extrudedQuadCellShape(const label cellIndex, "
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"const labelList& faceLabels, const faceList& faces, "
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"const labelList& owner, const labelList& neighbour, "
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"const label pointOffset, faceList& frontAndBackFaces)"
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) << "Problem with edge matching. Edges: " << localFaces
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<< abort(FatalError);
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}
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// Return added to keep compiler happy
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return cellShape(hex, labelList(0));
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// ************************************************************************* //
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