298 lines
9.1 KiB
C++
298 lines
9.1 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | foam-extend: Open Source CFD
|
|
\\ / O peration | Version: 4.1
|
|
\\ / A nd | Web: http://www.foam-extend.org
|
|
\\/ M anipulation | For copyright notice see file Copyright
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of foam-extend.
|
|
|
|
foam-extend 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 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
foam-extend 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Description
|
|
|
|
Note: bug in vtk displaying wedges? Seems to display ok if we decompose
|
|
them. Should be thoroughly tested!
|
|
(they appear rarely in polyhedral meshes, do appear in some cut meshes)
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "vtkTopo.H"
|
|
#include "polyMesh.H"
|
|
#include "cellShape.H"
|
|
#include "cellModeller.H"
|
|
|
|
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
|
|
|
// Construct from components
|
|
Foam::vtkTopo::vtkTopo(const polyMesh& mesh)
|
|
:
|
|
mesh_(mesh),
|
|
vertLabels_(),
|
|
cellTypes_(),
|
|
addPointCellLabels_(),
|
|
superCells_()
|
|
{
|
|
const cellModel& tet = *(cellModeller::lookup("tet"));
|
|
const cellModel& pyr = *(cellModeller::lookup("pyr"));
|
|
const cellModel& prism = *(cellModeller::lookup("prism"));
|
|
const cellModel& tetWedge = *(cellModeller::lookup("tetWedge"));
|
|
const cellModel& hex = *(cellModeller::lookup("hex"));
|
|
|
|
|
|
const cellShapeList& cellShapes = mesh_.cellShapes();
|
|
|
|
|
|
// Number of additional points needed by the decomposition of polyhedra
|
|
label nAddPoints = 0;
|
|
|
|
// Number of additional cells generated by the decomposition of polyhedra
|
|
label nAddCells = 0;
|
|
|
|
// Scan for cells which need to be decomposed and count additional points
|
|
// and cells
|
|
|
|
forAll(cellShapes, cellI)
|
|
{
|
|
const cellModel& model = cellShapes[cellI].model();
|
|
|
|
if
|
|
(
|
|
model != hex
|
|
// && model != wedge // See above.
|
|
&& model != prism
|
|
&& model != pyr
|
|
&& model != tet
|
|
&& model != tetWedge
|
|
)
|
|
{
|
|
const cell& cFaces = mesh_.cells()[cellI];
|
|
|
|
forAll(cFaces, cFaceI)
|
|
{
|
|
const face& f = mesh_.faces()[cFaces[cFaceI]];
|
|
|
|
label nQuads = 0;
|
|
label nTris = 0;
|
|
f.nTrianglesQuads(mesh_.points(), nTris, nQuads);
|
|
|
|
nAddCells += nQuads + nTris;
|
|
}
|
|
|
|
nAddCells--;
|
|
nAddPoints++;
|
|
}
|
|
}
|
|
|
|
// Set size of additional point addressing array
|
|
// (from added point to original cell)
|
|
addPointCellLabels_.setSize(nAddPoints);
|
|
|
|
// Set size of additional cells mapping array
|
|
// (from added cell to original cell)
|
|
superCells_.setSize(nAddCells);
|
|
|
|
// List of vertex labels in VTK ordering
|
|
vertLabels_.setSize(cellShapes.size() + nAddCells);
|
|
|
|
// Label of vtk type
|
|
cellTypes_.setSize(cellShapes.size() + nAddCells);
|
|
|
|
// Set counters for additional points and additional cells
|
|
label api = 0, aci = 0;
|
|
|
|
forAll(cellShapes, cellI)
|
|
{
|
|
const cellShape& cellShape = cellShapes[cellI];
|
|
const cellModel& cellModel = cellShape.model();
|
|
|
|
labelList& vtkVerts = vertLabels_[cellI];
|
|
|
|
if (cellModel == tet)
|
|
{
|
|
vtkVerts = cellShape;
|
|
|
|
cellTypes_[cellI] = VTK_TETRA;
|
|
}
|
|
else if (cellModel == pyr)
|
|
{
|
|
vtkVerts = cellShape;
|
|
|
|
cellTypes_[cellI] = VTK_PYRAMID;
|
|
}
|
|
else if (cellModel == prism)
|
|
{
|
|
vtkVerts.setSize(6);
|
|
vtkVerts[0] = cellShape[0];
|
|
vtkVerts[1] = cellShape[2];
|
|
vtkVerts[2] = cellShape[1];
|
|
vtkVerts[3] = cellShape[3];
|
|
vtkVerts[4] = cellShape[5];
|
|
vtkVerts[5] = cellShape[4];
|
|
|
|
// VTK calls this a wedge.
|
|
cellTypes_[cellI] = VTK_WEDGE;
|
|
}
|
|
else if (cellModel == tetWedge)
|
|
{
|
|
// Treat as squeezed prism
|
|
vtkVerts.setSize(6);
|
|
vtkVerts[0] = cellShape[0];
|
|
vtkVerts[1] = cellShape[2];
|
|
vtkVerts[2] = cellShape[1];
|
|
vtkVerts[3] = cellShape[3];
|
|
vtkVerts[4] = cellShape[4];
|
|
vtkVerts[5] = cellShape[4];
|
|
|
|
cellTypes_[cellI] = VTK_WEDGE;
|
|
}
|
|
// else if (cellModel == wedge)
|
|
// {
|
|
// // Treat as squeezed hex
|
|
// vtkVerts.setSize(8);
|
|
// vtkVerts[0] = cellShape[0];
|
|
// vtkVerts[1] = cellShape[1];
|
|
// vtkVerts[2] = cellShape[2];
|
|
// vtkVerts[3] = cellShape[0];
|
|
// vtkVerts[4] = cellShape[3];
|
|
// vtkVerts[5] = cellShape[4];
|
|
// vtkVerts[6] = cellShape[5];
|
|
// vtkVerts[7] = cellShape[6];
|
|
//
|
|
// cellTypes_[cellI] = VTK_HEXAHEDRON;
|
|
// }
|
|
else if (cellModel == hex)
|
|
{
|
|
vtkVerts.setSize(8);
|
|
vtkVerts[0] = cellShape[0];
|
|
vtkVerts[1] = cellShape[1];
|
|
vtkVerts[2] = cellShape[2];
|
|
vtkVerts[3] = cellShape[3];
|
|
vtkVerts[4] = cellShape[4];
|
|
vtkVerts[5] = cellShape[5];
|
|
vtkVerts[6] = cellShape[6];
|
|
vtkVerts[7] = cellShape[7];
|
|
|
|
cellTypes_[cellI] = VTK_HEXAHEDRON;
|
|
}
|
|
else
|
|
{
|
|
// Polyhedral cell. Decompose into tets + prisms.
|
|
// (see dxFoamExec/createDxConnections.C)
|
|
|
|
// Mapping from additional point to cell
|
|
addPointCellLabels_[api] = cellI;
|
|
|
|
// Whether to insert cell in place of original or not.
|
|
bool substituteCell = true;
|
|
|
|
const labelList& cFaces = mesh_.cells()[cellI];
|
|
|
|
forAll(cFaces, cFaceI)
|
|
{
|
|
const face& f = mesh_.faces()[cFaces[cFaceI]];
|
|
|
|
// Number of triangles and quads in decomposition
|
|
label nTris = 0;
|
|
label nQuads = 0;
|
|
f.nTrianglesQuads(mesh_.points(), nTris, nQuads);
|
|
|
|
// Do actual decomposition into triFcs and quadFcs.
|
|
faceList triFcs(nTris);
|
|
faceList quadFcs(nQuads);
|
|
label trii = 0;
|
|
label quadi = 0;
|
|
f.trianglesQuads(mesh_.points(), trii, quadi, triFcs, quadFcs);
|
|
|
|
forAll(quadFcs, quadi)
|
|
{
|
|
label thisCellI = -1;
|
|
|
|
if (substituteCell)
|
|
{
|
|
thisCellI = cellI;
|
|
|
|
substituteCell = false;
|
|
}
|
|
else
|
|
{
|
|
thisCellI = mesh_.nCells() + aci;
|
|
|
|
superCells_[aci] = cellI;
|
|
|
|
aci++;
|
|
}
|
|
|
|
labelList& addVtkVerts = vertLabels_[thisCellI];
|
|
|
|
addVtkVerts.setSize(5);
|
|
|
|
const face& quad = quadFcs[quadi];
|
|
|
|
addVtkVerts[0] = quad[0];
|
|
addVtkVerts[1] = quad[1];
|
|
addVtkVerts[2] = quad[2];
|
|
addVtkVerts[3] = quad[3];
|
|
addVtkVerts[4] = mesh_.nPoints() + api;
|
|
|
|
cellTypes_[thisCellI] = VTK_PYRAMID;
|
|
}
|
|
|
|
forAll(triFcs, trii)
|
|
{
|
|
label thisCellI = -1;
|
|
|
|
if (substituteCell)
|
|
{
|
|
thisCellI = cellI;
|
|
|
|
substituteCell = false;
|
|
}
|
|
else
|
|
{
|
|
thisCellI = mesh_.nCells() + aci;
|
|
|
|
superCells_[aci] = cellI;
|
|
|
|
aci++;
|
|
}
|
|
|
|
|
|
labelList& addVtkVerts = vertLabels_[thisCellI];
|
|
|
|
const face& tri = triFcs[trii];
|
|
|
|
addVtkVerts.setSize(4);
|
|
addVtkVerts[0] = tri[0];
|
|
addVtkVerts[1] = tri[1];
|
|
addVtkVerts[2] = tri[2];
|
|
addVtkVerts[3] = mesh_.nPoints() + api;
|
|
|
|
cellTypes_[thisCellI] = VTK_TETRA;
|
|
}
|
|
}
|
|
|
|
api++;
|
|
}
|
|
}
|
|
|
|
Pout<< " Original cells:" << mesh_.nCells()
|
|
<< " points:" << mesh_.nPoints()
|
|
<< " Additional cells:" << superCells_.size()
|
|
<< " additional points:" << addPointCellLabels_.size()
|
|
<< nl << endl;
|
|
}
|
|
|
|
// ************************************************************************* //
|