0021336: EDF 1717 SMESH: New algorithm "body fitting" cartesian unstructured

+	StdMeshers_CartesianParameters3D.hxx \
+	StdMeshers_Cartesian_3D.hxx
This commit is contained in:
eap 2011-10-28 12:53:31 +00:00
parent 1eedac41d2
commit 2c766c3b15
5 changed files with 2420 additions and 3 deletions

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@ -76,7 +76,9 @@ salomeinclude_HEADERS = \
StdMeshers_Import_1D.hxx \
StdMeshers_Import_1D2D.hxx \
StdMeshers_ViscousLayers.hxx \
StdMeshers_Projection_1D2D.hxx
StdMeshers_Projection_1D2D.hxx \
StdMeshers_CartesianParameters3D.hxx \
StdMeshers_Cartesian_3D.hxx
# Libraries targets
@ -131,8 +133,9 @@ dist_libStdMeshers_la_SOURCES = \
StdMeshers_Import_1D.cxx \
StdMeshers_Import_1D2D.cxx \
StdMeshers_ViscousLayers.cxx \
StdMeshers_Projection_1D2D.cxx
StdMeshers_Projection_1D2D.cxx \
StdMeshers_CartesianParameters3D.cxx \
StdMeshers_Cartesian_3D.cxx
# additionnal information to compil and link file
libStdMeshers_la_CPPFLAGS = \

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@ -0,0 +1,453 @@
// Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File : StdMeshers_CartesianParameters3D.cxx
// Author : Edward AGAPOV
// Module : SMESH
//
#include "StdMeshers_CartesianParameters3D.hxx"
#include "StdMeshers_NumberOfSegments.hxx"
#include "StdMeshers_Distribution.hxx"
#include "SMESH_Gen.hxx"
#include "utilities.h"
#include <Precision.hxx>
#include <Bnd_Box.hxx>
#include <limits>
using namespace std;
//=======================================================================
//function : StdMeshers_CartesianParameters3D
//purpose : Constructor
//=======================================================================
StdMeshers_CartesianParameters3D::StdMeshers_CartesianParameters3D(int hypId,
int studyId,
SMESH_Gen * gen)
: SMESH_Hypothesis(hypId, studyId, gen),
_sizeThreshold( 4.0 ) // default according to the customer specification
{
_name = "CartesianParameters3D"; // used by "Cartesian_3D"
_param_algo_dim = 3; // 3D
}
namespace
{
const char* axisName[3] = { "X", "Y", "Z" };
//================================================================================
/*!
* \brief Checks validity of an axis index, throws in case of invalidity
*/
//================================================================================
void checkAxis(const int axis)
{
if ( axis < 0 || axis > 2 )
throw SALOME_Exception(SMESH_Comment("Invalid axis index ") << axis <<
". Valid axis indices are 0, 1 and 2");
}
//================================================================================
/*!
* \brief Checks validity of spacing data, throws in case of invalidity
*/
//================================================================================
void checkGridSpacing(std::vector<std::string>& spaceFunctions,
std::vector<double>& internalPoints,
const std::string& axis)
throw ( SALOME_Exception )
{
if ( spaceFunctions.empty() )
throw SALOME_Exception(SMESH_Comment("Empty space function for ") << axis );
for ( size_t i = 1; i < internalPoints.size(); ++i )
if ( internalPoints[i] - internalPoints[i-1] < 0 )
throw SALOME_Exception(SMESH_Comment("Wrong order of internal points along ") << axis);
else if ( internalPoints[i] - internalPoints[i-1] < 1e-3 )
throw SALOME_Exception(SMESH_Comment("Too close internal points along ") << axis );
const double tol = Precision::Confusion();
if ( !internalPoints.empty() &&
( internalPoints.front() < -tol || internalPoints.back() > 1 + tol ))
throw SALOME_Exception(SMESH_Comment("Invalid internal points along ") << axis);
if ( internalPoints.empty() || internalPoints.front() > tol )
internalPoints.insert( internalPoints.begin(), 0. );
if ( internalPoints.size() < 2 || internalPoints.back() < 1 - tol )
internalPoints.push_back( 1. );
if ( internalPoints.size() != spaceFunctions.size() + 1 )
throw SALOME_Exception
(SMESH_Comment("Numbre of internal points mismatch number of functions for ") << axis);
for ( size_t i = 0; i < spaceFunctions.size(); ++i )
spaceFunctions[i] =
StdMeshers_NumberOfSegments::CheckExpressionFunction( spaceFunctions[i], -1 );
}
}
//=======================================================================
//function : SetGrid
//purpose : Sets coordinates of node positions along an axes
//=======================================================================
void StdMeshers_CartesianParameters3D::SetGrid(std::vector<double>& coords, int axis)
throw ( SALOME_Exception )
{
checkAxis( axis );
if ( coords.size() < 2 )
throw SALOME_Exception(LOCALIZED("Wrong number of grid coordinates"));
std::sort( coords.begin(), coords.end() );
bool changed = ( _coords[axis] != coords );
if ( changed )
{
_coords[axis] = coords;
NotifySubMeshesHypothesisModification();
}
_spaceFunctions[axis].clear();
_internalPoints[axis].clear();
}
//=======================================================================
//function : SetGridSpacing
//purpose : Set grid spacing along the three axes
//=======================================================================
void StdMeshers_CartesianParameters3D::SetGridSpacing(std::vector<string>& xSpaceFuns,
std::vector<double>& xInternalPoints,
const int axis)
throw ( SALOME_Exception )
{
checkAxis( axis );
checkGridSpacing( xSpaceFuns, xInternalPoints, axisName[axis] );
bool changed = ( xSpaceFuns != _spaceFunctions[axis] ||
xInternalPoints != _internalPoints[axis] );
_spaceFunctions[axis] = xSpaceFuns;
_internalPoints[axis] = xInternalPoints;
_coords[axis].clear();
if ( changed )
NotifySubMeshesHypothesisModification();
}
//=======================================================================
//function : SetSizeThreshold
//purpose : Set size threshold
//=======================================================================
void StdMeshers_CartesianParameters3D::SetSizeThreshold(const double threshold)
throw ( SALOME_Exception )
{
if ( threshold <= 1.0 )
throw SALOME_Exception(LOCALIZED("threshold must be > 1.0"));
bool changed = fabs( _sizeThreshold - threshold ) > 1e-6;
_sizeThreshold = threshold;
if ( changed )
NotifySubMeshesHypothesisModification();
}
//=======================================================================
//function : GetGridSpacing
//purpose : return spacing
//=======================================================================
void StdMeshers_CartesianParameters3D::GetGridSpacing(std::vector<std::string>& spaceFunctions,
std::vector<double>& internalPoints,
const int axis) const
throw ( SALOME_Exception )
{
if ( !IsGridBySpacing(axis) )
throw SALOME_Exception(LOCALIZED("The grid is defined by coordinates and not by spacing"));
spaceFunctions = _spaceFunctions[axis];
internalPoints = _internalPoints[axis];
}
//=======================================================================
//function : IsGridBySpacing
//=======================================================================
bool StdMeshers_CartesianParameters3D::IsGridBySpacing(const int axis) const
throw ( SALOME_Exception )
{
checkAxis(axis);
return !_spaceFunctions[axis].empty();
}
//=======================================================================
//function : ComputeCoordinates
//purpose : Computes node coordinates by spacing functions
//=======================================================================
void StdMeshers_CartesianParameters3D::ComputeCoordinates(const double x0,
const double x1,
vector<std::string>& spaceFuns,
vector<double>& points,
vector<double>& coords,
const std::string& axis )
throw ( SALOME_Exception )
{
checkGridSpacing( spaceFuns, points, axis );
coords.clear();
for ( size_t i = 0; i < spaceFuns.size(); ++i )
{
FunctionExpr fun( spaceFuns[i].c_str(), /*convMode=*/-1 );
const double p0 = x0 * ( 1. - points[i]) + x1 * points[i];
const double p1 = x0 * ( 1. - points[i+1]) + x1 * points[i+1];
const double length = p1 - p0;
const size_t nbSections = 1000;
const double sectionLen = ( p1 - p0 ) / nbSections;
vector< double > nbSegments( nbSections + 1 );
nbSegments[ 0 ] = 0.;
double t, spacing = 0;
for ( size_t i = 1; i <= nbSections; ++i )
{
t = double( i ) / nbSections;
if ( !fun.value( t, spacing ) || spacing < std::numeric_limits<double>::min() )
throw SALOME_Exception(LOCALIZED("Invalid spacing function"));
nbSegments[ i ] = nbSegments[ i-1 ] + std::min( 1., sectionLen / spacing );
}
const int nbCells = max (1, int(floor(nbSegments.back()+0.5)));
const double corr = nbCells / nbSegments.back();
if ( coords.empty() ) coords.push_back( p0 );
for ( size_t iCell = 1, i = 1; i <= nbSections; ++i )
{
if ( nbSegments[i]*corr >= iCell )
{
t = (i - ( nbSegments[i] - iCell/corr )/( nbSegments[i] - nbSegments[i-1] )) / nbSections;
coords.push_back( p0 + t * length );
++iCell;
}
}
const double lastCellLen = coords.back() - coords[ coords.size() - 2 ];
if ( fabs( coords.back() - p1 ) > 0.5 * lastCellLen )
coords.push_back ( p1 );
}
}
//=======================================================================
//function : GetCoordinates
//purpose : Return coordinates of node positions along the three axes.
// If the grid is defined by spacing functions, the coordinates are computed
//=======================================================================
void StdMeshers_CartesianParameters3D::GetCoordinates(std::vector<double>& xNodes,
std::vector<double>& yNodes,
std::vector<double>& zNodes,
const Bnd_Box& bndBox) const
throw ( SALOME_Exception )
{
double x0,y0,z0, x1,y1,z1;
if ( IsGridBySpacing(0) || IsGridBySpacing(1) || IsGridBySpacing(2))
{
if ( bndBox.IsVoid() ||
bndBox.IsXThin( Precision::Confusion() ) ||
bndBox.IsYThin( Precision::Confusion() ) ||
bndBox.IsZThin( Precision::Confusion() ) )
throw SALOME_Exception(LOCALIZED("Invalid bounding box"));
bndBox.Get(x0,y0,z0, x1,y1,z1);
}
StdMeshers_CartesianParameters3D* me = const_cast<StdMeshers_CartesianParameters3D*>(this);
if ( IsGridBySpacing(0) )
ComputeCoordinates( x0, x1, me->_spaceFunctions[0], me->_internalPoints[0], xNodes, "X" );
else
xNodes = _coords[0];
if ( IsGridBySpacing(1) )
ComputeCoordinates( y0, y1, me->_spaceFunctions[1], me->_internalPoints[1], yNodes, "Y" );
else
yNodes = _coords[1];
if ( IsGridBySpacing(2) )
ComputeCoordinates( z0, z1, me->_spaceFunctions[2], me->_internalPoints[2], zNodes, "Z" );
else
zNodes = _coords[2];
}
//=======================================================================
//function : GetGrid
//purpose : Return coordinates of node positions along the three axes
//=======================================================================
void StdMeshers_CartesianParameters3D::GetGrid(std::vector<double>& coords, int axis) const
throw ( SALOME_Exception )
{
if ( IsGridBySpacing(axis) )
throw SALOME_Exception(LOCALIZED("The grid is defined by spacing and not by coordinates"));
coords = _coords[axis];
}
//=======================================================================
//function : GetSizeThreshold
//purpose : Return size threshold
//=======================================================================
double StdMeshers_CartesianParameters3D::GetSizeThreshold() const
{
return _sizeThreshold;
}
//=======================================================================
//function : IsDefined
//purpose : Return true if parameters are well defined
//=======================================================================
bool StdMeshers_CartesianParameters3D::IsDefined() const
{
for ( int i = 0; i < 3; ++i )
if (_coords[i].empty() && (_spaceFunctions[i].empty() || _internalPoints[i].empty()))
return false;
return ( _sizeThreshold > 1.0 );
}
//=======================================================================
//function : SaveTo
//purpose : store my parameters into a stream
//=======================================================================
std::ostream & StdMeshers_CartesianParameters3D::SaveTo(std::ostream & save)
{
save << _sizeThreshold << " ";
for ( int i = 0; i < 3; ++i )
{
save << _coords[i].size() << " ";
for ( size_t j = 0; j < _coords[i].size(); ++j )
save << _coords[i][j] << " ";
save << _internalPoints[i].size() << " ";
for ( size_t j = 0; j < _internalPoints[i].size(); ++j )
save << _internalPoints[i][j] << " ";
save << _spaceFunctions[i].size() << " ";
for ( size_t j = 0; j < _spaceFunctions[i].size(); ++j )
save << _spaceFunctions[i][j] << " ";
}
return save;
}
//=======================================================================
//function : LoadFrom
//purpose : resore my parameters from a stream
//=======================================================================
std::istream & StdMeshers_CartesianParameters3D::LoadFrom(std::istream & load)
{
bool ok;
ok = (load >> _sizeThreshold );
for ( int ax = 0; ax < 3; ++ax )
{
if (ok)
{
size_t i = 0;
ok = (load >> i );
if ( i > 0 && ok )
{
_coords[ax].resize( i );
for ( i = 0; i < _coords[ax].size() && ok; ++i )
ok = (load >> _coords[ax][i] );
}
}
if (ok)
{
size_t i = 0;
ok = (load >> i );
if ( i > 0 && ok )
{
_internalPoints[ax].resize( i );
for ( i = 0; i < _internalPoints[ax].size() && ok; ++i )
ok = (load >> _internalPoints[ax][i] );
}
}
if (ok)
{
size_t i = 0;
ok = (load >> i );
if ( i > 0 && ok )
{
_spaceFunctions[ax].resize( i );
for ( i = 0; i < _spaceFunctions[ax].size() && ok; ++i )
ok = (load >> _spaceFunctions[ax][i] );
}
}
}
return load;
}
//=======================================================================
//function : SetParametersByMesh
//=======================================================================
bool StdMeshers_CartesianParameters3D::SetParametersByMesh(const SMESH_Mesh* ,
const TopoDS_Shape& )
{
return false;
}
//=======================================================================
//function : SetParametersByDefaults
//=======================================================================
bool StdMeshers_CartesianParameters3D::SetParametersByDefaults(const TDefaults& dflts,
const SMESH_Mesh* /*theMesh*/)
{
if ( dflts._elemLength > 1e-100 )
{
vector<string> spacing( 1, SMESH_Comment(dflts._elemLength));
vector<double> intPnts;
GetGridSpacing( spacing, intPnts, 0 );
GetGridSpacing( spacing, intPnts, 1 );
GetGridSpacing( spacing, intPnts, 2 );
return true;
}
return false;
}

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@ -0,0 +1,145 @@
// Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File : StdMeshers_CartesianParameters3D.hxx
// Author : Edward AGAPOV
// Module : SMESH
//
#ifndef _SMESH_CartesianParameters3D_HXX_
#define _SMESH_CartesianParameters3D_HXX_
#include "SMESH_StdMeshers.hxx"
#include "SMESH_Hypothesis.hxx"
#include "Utils_SALOME_Exception.hxx"
#include <vector>
class SMESH_Gen;
class Bnd_Box;
// =========================================================
/*!
* This hypothesis specifies
* - Definition of the Cartesian grid
* - Size threshold
*/
// =========================================================
class STDMESHERS_EXPORT StdMeshers_CartesianParameters3D: public SMESH_Hypothesis
{
public:
// Constructor
StdMeshers_CartesianParameters3D( int hypId, int studyId, SMESH_Gen * gen );
/*!
* Sets coordinates of node positions along an axis (countered from 0)
*/
void SetGrid(std::vector<double>& xNodes, int axis) throw ( SALOME_Exception );
/*!
* Return coordinates of node positions along the three axes
*/
void GetGrid(std::vector<double>& xNodes, int axis) const throw ( SALOME_Exception );
/*!
* \brief Set grid spacing along the three axes
* \param spaceFunctions - functions defining spacing values at given point on axis
* \param internalPoints - points dividing a grid into parts along each direction
*
* Parameter t of spaceFunction f(t) is a position [0,1] withing bounding box of
* the shape to mesh
*/
void SetGridSpacing(std::vector<std::string>& spaceFunctions,
std::vector<double>& internalPoints,
const int axis) throw ( SALOME_Exception );
void GetGridSpacing(std::vector<std::string>& spaceFunctions,
std::vector<double>& internalPoints,
const int axis) const throw ( SALOME_Exception );
bool IsGridBySpacing(const int axis) const throw ( SALOME_Exception );
/*!
* \brief Computes node coordinates by spacing functions
* \param x0 - lower coordinate
* \param x1 - upper coordinate
* \param spaceFuns - space functions
* \param points - internal points
* \param coords - the computed coordinates
*/
static void ComputeCoordinates(const double x0,
const double x1,
std::vector<std::string>& spaceFuns,
std::vector<double>& points,
std::vector<double>& coords,
const std::string& axis ) throw (SALOME_Exception);
/*!
* Return coordinates of node positions along the three axes.
* If the grid is defined by spacing functions, the coordinates are computed
*/
void GetCoordinates(std::vector<double>& xNodes,
std::vector<double>& yNodes,
std::vector<double>& zNodes,
const Bnd_Box& bndBox) const throw ( SALOME_Exception );
/*!
* Set size threshold. A polyhedral cell got by cutting an initial
* hexahedron by geometry boundary is considered small and is removed if
* it's size is \athreshold times less than the size of the initial hexahedron.
*/
void SetSizeThreshold(const double threshold) throw ( SALOME_Exception );
/*!
* \brief Return size threshold
*/
double GetSizeThreshold() const;
/*!
* \brief Return true if parameters are well defined
*/
bool IsDefined() const;
/*!
* \brief Persistence methods
*/
virtual std::ostream & SaveTo(std::ostream & save);
virtual std::istream & LoadFrom(std::istream & load);
/*!
* \brief Initialize my parameter values by the mesh built on the geometry
*/
virtual bool SetParametersByMesh(const SMESH_Mesh* theMesh, const TopoDS_Shape& theShape);
/*!
* \brief Initialize my parameter values by default parameters.
*/
virtual bool SetParametersByDefaults(const TDefaults& dflts, const SMESH_Mesh* theMesh=0);
protected:
std::vector<double> _coords[3];
std::vector<std::string> _spaceFunctions[3];
std::vector<double> _internalPoints[3];
double _sizeThreshold;
};
#endif

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@ -0,0 +1,64 @@
// Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File : StdMeshers_Cartesian_3D.hxx
// Module : SMESH
//
#ifndef _SMESH_Cartesian_3D_HXX_
#define _SMESH_Cartesian_3D_HXX_
#include "SMESH_StdMeshers.hxx"
#include "SMESH_3D_Algo.hxx"
/*!
* \brief A 3D algorithm generating 3D structured Cartesian mesh in the
* internal part of a solid shape and polyhedral volumes near the shape boundary.
*
* Issue 0021336
*/
class StdMeshers_CartesianParameters3D;
class STDMESHERS_EXPORT StdMeshers_Cartesian_3D : public SMESH_3D_Algo
{
public:
StdMeshers_Cartesian_3D(int hypId, int studyId, SMESH_Gen* gen);
virtual bool CheckHypothesis(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape,
Hypothesis_Status& aStatus);
virtual bool Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape);
virtual bool Evaluate(SMESH_Mesh & aMesh, const TopoDS_Shape & aShape,
MapShapeNbElems& aResMap);
virtual void SetEventListener(SMESH_subMesh* subMesh);
private:
void setSubmeshesComputed(SMESH_Mesh& aMesh, const TopoDS_Shape& theShape );
const StdMeshers_CartesianParameters3D* _hyp;
};
#endif