-// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2014 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.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#include "SMESH_subMeshEventListener.hxx"
#include "StdMeshers_CartesianParameters3D.hxx"
-#include "utilities.h"
-#include "Utils_ExceptHandlers.hxx"
+#include <utilities.h>
+#include <Utils_ExceptHandlers.hxx>
#include <Basics_OCCTVersion.hxx>
+#include <GEOMUtils.hxx>
+
+#include <BRepAdaptor_Curve.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <BRepBndLib.hxx>
#include <BRepBuilderAPI_Copy.hxx>
+#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepTools.hxx>
+#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
+#include <Bnd_B3d.hxx>
#include <Bnd_Box.hxx>
#include <ElSLib.hxx>
+#include <GCPnts_UniformDeflection.hxx>
#include <Geom2d_BSplineCurve.hxx>
#include <Geom2d_BezierCurve.hxx>
#include <Geom2d_TrimmedCurve.hxx>
+#include <GeomAPI_ProjectPointOnSurf.hxx>
+#include <GeomLib.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Geom_BSplineSurface.hxx>
#include <Geom_BezierCurve.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopLoc_Location.hxx>
-#include <TopTools_MapIteratorOfMapOfShape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopoDS.hxx>
+#include <TopoDS_Compound.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_TShape.hxx>
#include <gp_Cone.hxx>
#include <gp_Sphere.hxx>
#include <gp_Torus.hxx>
+#include <limits>
+
//#undef WITH_TBB
#ifdef WITH_TBB
#include <tbb/parallel_for.h>
using namespace std;
+#ifdef _DEBUG_
//#define _MY_DEBUG_
+#endif
#if OCC_VERSION_LARGE <= 0x06050300
-// workaround it required only for OCCT6.5.3 and older (see OCC22809)
+// workaround is required only for OCCT6.5.3 and older (see OCC22809)
#define ELLIPSOLID_WORKAROUND
#endif
namespace
{
+ typedef int TGeomID;
+
//=============================================================================
// Definitions of internal utils
// --------------------------------------------------------------------------
};
// --------------------------------------------------------------------------
/*!
- * \brief Data of intersection between a GridLine and a TopoDS_Face
+ * \brief Common data of any intersection between a Grid and a shape
*/
- struct IntersectionPoint
+ struct B_IntersectPoint
{
- double _paramOnLine;
- mutable Transition _transition;
mutable const SMDS_MeshNode* _node;
- mutable size_t _indexOnLine;
+ mutable vector< TGeomID > _faceIDs;
+
+ B_IntersectPoint(): _node(NULL) {}
+ void Add( const vector< TGeomID >& fIDs, const SMDS_MeshNode* n=0 ) const;
+ int HasCommonFace( const B_IntersectPoint * other, int avoidFace=-1 ) const;
+ bool IsOnFace( int faceID ) const;
+ virtual ~B_IntersectPoint() {}
+ };
+ // --------------------------------------------------------------------------
+ /*!
+ * \brief Data of intersection between a GridLine and a TopoDS_Face
+ */
+ struct F_IntersectPoint : public B_IntersectPoint
+ {
+ double _paramOnLine;
+ mutable Transition _transition;
+ mutable size_t _indexOnLine;
- IntersectionPoint(): _node(0) {}
- bool operator< ( const IntersectionPoint& o ) const { return _paramOnLine < o._paramOnLine; }
+ bool operator< ( const F_IntersectPoint& o ) const { return _paramOnLine < o._paramOnLine; }
+ };
+ // --------------------------------------------------------------------------
+ /*!
+ * \brief Data of intersection between GridPlanes and a TopoDS_EDGE
+ */
+ struct E_IntersectPoint : public B_IntersectPoint
+ {
+ gp_Pnt _point;
+ double _uvw[3];
+ TGeomID _shapeID;
};
// --------------------------------------------------------------------------
/*!
{
gp_Lin _line;
double _length; // line length
- multiset< IntersectionPoint > _intPoints;
+ multiset< F_IntersectPoint > _intPoints;
void RemoveExcessIntPoints( const double tol );
- bool GetIsOutBefore( multiset< IntersectionPoint >::iterator ip, bool prevIsOut );
+ bool GetIsOutBefore( multiset< F_IntersectPoint >::iterator ip, bool prevIsOut );
+ };
+ // --------------------------------------------------------------------------
+ /*!
+ * \brief Planes of the grid used to find intersections of an EDGE with a hexahedron
+ */
+ struct GridPlanes
+ {
+ gp_XYZ _zNorm;
+ vector< gp_XYZ > _origins; // origin points of all planes in one direction
+ vector< double > _zProjs; // projections of origins to _zNorm
};
// --------------------------------------------------------------------------
/*!
struct Grid
{
vector< double > _coords[3]; // coordinates of grid nodes
- vector< GridLine > _lines [3]; // in 3 directions
+ gp_XYZ _axes [3]; // axis directions
+ vector< GridLine > _lines [3]; // in 3 directions
double _tol, _minCellSize;
+ gp_XYZ _origin;
+ gp_Mat _invB; // inverted basis of _axes
+
+ vector< const SMDS_MeshNode* > _nodes; // mesh nodes at grid nodes
+ vector< const F_IntersectPoint* > _gridIntP; // grid node intersection with geometry
+
+ list< E_IntersectPoint > _edgeIntP; // intersections with EDGEs
+ TopTools_IndexedMapOfShape _shapes;
- vector< const SMDS_MeshNode* > _nodes; // mesh nodes at grid nodes
- vector< bool > _isBndNode; // is mesh node at intersection with geometry
+ SMESH_MesherHelper* _helper;
size_t CellIndex( size_t i, size_t j, size_t k ) const
{
void SetCoordinates(const vector<double>& xCoords,
const vector<double>& yCoords,
const vector<double>& zCoords,
- const TopoDS_Shape& shape );
+ const double* axesDirs,
+ const Bnd_Box& bndBox );
+ void ComputeUVW(const gp_XYZ& p, double uvw[3]);
void ComputeNodes(SMESH_MesherHelper& helper);
};
#ifdef ELLIPSOLID_WORKAROUND
struct FaceGridIntersector
{
TopoDS_Face _face;
+ TGeomID _faceID;
Grid* _grid;
Bnd_Box _bndBox;
__IntCurvesFace_Intersector* _surfaceInt;
- vector< std::pair< GridLine*, IntersectionPoint > > _intersections;
+ vector< std::pair< GridLine*, F_IntersectPoint > > _intersections;
FaceGridIntersector(): _grid(0), _surfaceInt(0) {}
void Intersect();
- bool IsInGrid(const Bnd_Box& gridBox);
void StoreIntersections()
{
for ( size_t i = 0; i < _intersections.size(); ++i )
- _intersections[i].first->_intPoints.insert( _intersections[i].second );
+ {
+ multiset< F_IntersectPoint >::iterator ip =
+ _intersections[i].first->_intPoints.insert( _intersections[i].second );
+ ip->_faceIDs.reserve( 1 );
+ ip->_faceIDs.push_back( _faceID );
+ }
}
const Bnd_Box& GetFaceBndBox()
{
gp_Torus _torus;
__IntCurvesFace_Intersector* _surfaceInt;
- vector< IntersectionPoint > _intPoints;
+ vector< F_IntersectPoint > _intPoints;
void IntersectWithPlane (const GridLine& gridLine);
void IntersectWithCylinder(const GridLine& gridLine);
struct _Face;
struct _Link;
// --------------------------------------------------------------------------------
- struct _Node //!< node either at a hexahedron corner or at GridLine intersection
+ struct _Node //!< node either at a hexahedron corner or at intersection
{
- const SMDS_MeshNode* _node; // mesh node at hexahedron corner
- const IntersectionPoint* _intPoint;
-
- _Node(const SMDS_MeshNode* n=0, const IntersectionPoint* ip=0):_node(n), _intPoint(ip) {}
- const SMDS_MeshNode* Node() const { return _intPoint ? _intPoint->_node : _node; }
- //bool IsCorner() const { return _node; }
+ const SMDS_MeshNode* _node; // mesh node at hexahedron corner
+ const B_IntersectPoint* _intPoint;
+ const _Face* _usedInFace;
+
+ _Node(const SMDS_MeshNode* n=0, const B_IntersectPoint* ip=0)
+ :_node(n), _intPoint(ip), _usedInFace(0) {}
+ const SMDS_MeshNode* Node() const
+ { return ( _intPoint && _intPoint->_node ) ? _intPoint->_node : _node; }
+ //const F_IntersectPoint* FaceIntPnt() const
+ //{ return static_cast< const F_IntersectPoint* >( _intPoint ); }
+ const E_IntersectPoint* EdgeIntPnt() const
+ { return static_cast< const E_IntersectPoint* >( _intPoint ); }
+ bool IsUsedInFace( const _Face* polygon = 0 )
+ {
+ return polygon ? ( _usedInFace == polygon ) : bool( _usedInFace );
+ }
+ void Add( const E_IntersectPoint* ip )
+ {
+ if ( !_intPoint ) {
+ _intPoint = ip;
+ }
+ else if ( !_intPoint->_node ) {
+ ip->Add( _intPoint->_faceIDs );
+ _intPoint = ip;
+ }
+ else {
+ _intPoint->Add( ip->_faceIDs );
+ }
+ }
+ int IsLinked( const B_IntersectPoint* other,
+ int avoidFace=-1 ) const // returns id of a common face
+ {
+ return _intPoint ? _intPoint->HasCommonFace( other, avoidFace ) : 0;
+ }
+ bool IsOnFace( int faceID ) const // returns true if faceID is found
+ {
+ return _intPoint ? _intPoint->IsOnFace( faceID ) : false;
+ }
+ gp_Pnt Point() const
+ {
+ if ( const SMDS_MeshNode* n = Node() )
+ return SMESH_TNodeXYZ( n );
+ if ( const E_IntersectPoint* eip =
+ dynamic_cast< const E_IntersectPoint* >( _intPoint ))
+ return eip->_point;
+ return gp_Pnt( 1e100, 0, 0 );
+ }
};
// --------------------------------------------------------------------------------
struct _Link // link connecting two _Node's
{
_Node* _nodes[2];
- vector< _Node> _intNodes; // _Node's at GridLine intersections
- vector< _Link > _splits;
- vector< _Face*> _faces;
+ _Face* _faces[2]; // polygons sharing a link
+ vector< const F_IntersectPoint* > _fIntPoints; // GridLine intersections with FACEs
+ vector< _Node* > _fIntNodes; // _Node's at _fIntPoints
+ vector< _Link > _splits;
+ _Link() { _faces[0] = 0; }
};
// --------------------------------------------------------------------------------
struct _OrientedLink
return _OrientedLink(&_link->_splits[_reverse ? NbResultLinks()-i-1 : i],_reverse);
}
_Node* FirstNode() const { return _link->_nodes[ _reverse ]; }
- _Node* LastNode() const { return _link->_nodes[ !_reverse ]; }
+ _Node* LastNode() const { return _link->_nodes[ !_reverse ]; }
+ operator bool() const { return _link; }
+ vector< TGeomID > GetNotUsedFace(const set<TGeomID>& usedIDs ) const // returns supporting FACEs
+ {
+ vector< TGeomID > faces;
+ const B_IntersectPoint *ip0, *ip1;
+ if (( ip0 = _link->_nodes[0]->_intPoint ) &&
+ ( ip1 = _link->_nodes[1]->_intPoint ))
+ {
+ for ( size_t i = 0; i < ip0->_faceIDs.size(); ++i )
+ if ( ip1->IsOnFace ( ip0->_faceIDs[i] ) &&
+ !usedIDs.count( ip0->_faceIDs[i] ) )
+ faces.push_back( ip0->_faceIDs[i] );
+ }
+ return faces;
+ }
+ bool HasEdgeNodes() const
+ {
+ return ( dynamic_cast< const E_IntersectPoint* >( _link->_nodes[0]->_intPoint ) ||
+ dynamic_cast< const E_IntersectPoint* >( _link->_nodes[1]->_intPoint ));
+ }
+ int NbFaces() const
+ {
+ return !_link->_faces[0] ? 0 : 1 + bool( _link->_faces[1] );
+ }
+ void AddFace( _Face* f )
+ {
+ if ( _link->_faces[0] )
+ {
+ _link->_faces[1] = f;
+ }
+ else
+ {
+ _link->_faces[0] = f;
+ _link->_faces[1] = 0;
+ }
+ }
+ void RemoveFace( _Face* f )
+ {
+ if ( !_link->_faces[0] ) return;
+
+ if ( _link->_faces[1] == f )
+ {
+ _link->_faces[1] = 0;
+ }
+ else if ( _link->_faces[0] == f )
+ {
+ _link->_faces[0];
+ if ( _link->_faces[1] )
+ {
+ _link->_faces[0] = _link->_faces[1];
+ _link->_faces[1] = 0;
+ }
+ }
+ }
};
// --------------------------------------------------------------------------------
struct _Face
{
- vector< _OrientedLink > _links;
- vector< _Link > _polyLinks; // links added to close a polygonal face
+ vector< _OrientedLink > _links; // links on GridLine's
+ vector< _Link > _polyLinks; // links added to close a polygonal face
+ vector< _Node* > _eIntNodes; // nodes at intersection with EDGEs
+ bool isPolyLink( const _OrientedLink& ol )
+ {
+ return _polyLinks.empty() ? false :
+ ( &_polyLinks[0] <= ol._link && ol._link <= &_polyLinks.back() );
+ }
};
// --------------------------------------------------------------------------------
struct _volumeDef // holder of nodes of a volume mesh element
{
- vector< const SMDS_MeshNode* > _nodes;
- vector< int > _quantities;
+ vector< _Node* > _nodes;
+ vector< int > _quantities;
typedef boost::shared_ptr<_volumeDef> Ptr;
- void set( const vector< const SMDS_MeshNode* >& nodes,
- const vector< int > quant = vector< int >() )
+ void set( const vector< _Node* >& nodes,
+ const vector< int >& quant = vector< int >() )
{ _nodes = nodes; _quantities = quant; }
- // static Ptr New( const vector< const SMDS_MeshNode* >& nodes,
- // const vector< int > quant = vector< int >() )
- // {
- // _volumeDef* def = new _volumeDef;
- // def->_nodes = nodes;
- // def->_quantities = quant;
- // return Ptr( def );
- // }
};
// topology of a hexahedron
int _nodeShift[8];
- _Node _hexNodes[8];
- _Link _hexLinks[12];
- _Face _hexQuads[6];
+ _Node _hexNodes [8];
+ _Link _hexLinks [12];
+ _Face _hexQuads [6];
// faces resulted from hexahedron intersection
vector< _Face > _polygons;
+ // intresections with EDGEs
+ vector< const E_IntersectPoint* > _eIntPoints;
+
+ // additional nodes created at intersection points
+ vector< _Node > _intNodes;
+
+ // nodes inside the hexahedron (at VERTEXes)
+ vector< _Node* > _vIntNodes;
+
// computed volume elements
//vector< _volumeDef::Ptr > _volumeDefs;
_volumeDef _volumeDefs;
Grid* _grid;
double _sizeThreshold, _sideLength[3];
- int _nbCornerNodes, _nbIntNodes, _nbBndNodes;
+ int _nbCornerNodes, _nbFaceIntNodes, _nbBndNodes;
int _origNodeInd; // index of _hexNodes[0] node within the _grid
size_t _i,_j,_k;
public:
Hexahedron(const double sizeThreshold, Grid* grid);
- int MakeElements(SMESH_MesherHelper& helper);
+ int MakeElements(SMESH_MesherHelper& helper,
+ const map< TGeomID, vector< TGeomID > >& edge2faceIDsMap);
void ComputeElements();
void Init() { init( _i, _j, _k ); }
Hexahedron(const Hexahedron& other );
void init( size_t i, size_t j, size_t k );
void init( size_t i );
+ void addEdges(SMESH_MesherHelper& helper,
+ vector< Hexahedron* >& intersectedHex,
+ const map< TGeomID, vector< TGeomID > >& edge2faceIDsMap);
+ gp_Pnt findIntPoint( double u1, double proj1, double u2, double proj2,
+ double proj, BRepAdaptor_Curve& curve,
+ const gp_XYZ& axis, const gp_XYZ& origin );
+ int getEntity( const E_IntersectPoint* ip, int* facets, int& sub );
+ bool addIntersection( const E_IntersectPoint& ip,
+ vector< Hexahedron* >& hexes,
+ int ijk[], int dIJK[] );
+ bool findChain( _Node* n1, _Node* n2, _Face& quad, vector<_Node*>& chainNodes );
+ bool closePolygon( _Face* polygon, vector<_Node*>& chainNodes ) const;
int addElements(SMESH_MesherHelper& helper);
+ bool is1stNodeOut( _Link& link ) const;
bool isInHole() const;
bool checkPolyhedronSize() const;
bool addHexa ();
bool addTetra();
bool addPenta();
bool addPyra ();
+ bool debugDumpLink( _Link* link );
+ _Node* FindEqualNode( vector< _Node* >& nodes,
+ const E_IntersectPoint* ip,
+ const double tol2 )
+ {
+ for ( size_t i = 0; i < nodes.size(); ++i )
+ if ( nodes[i]->EdgeIntPnt() == ip ||
+ nodes[i]->Point().SquareDistance( ip->_point ) <= tol2 )
+ return nodes[i];
+ return 0;
+ }
};
-
+
#ifdef WITH_TBB
// --------------------------------------------------------------------------
/*!
_faceVec[i].Intersect();
}
};
-
#endif
+
//=============================================================================
// Implementation of internal utils
//=============================================================================
+ /*!
+ * \brief adjust \a i to have \a val between values[i] and values[i+1]
+ */
+ inline void locateValue( int & i, double val, const vector<double>& values,
+ int& di, double tol )
+ {
+ //val += values[0]; // input \a val is measured from 0.
+ if ( i > values.size()-2 )
+ i = values.size()-2;
+ else
+ while ( i+2 < values.size() && val > values[ i+1 ])
+ ++i;
+ while ( i > 0 && val < values[ i ])
+ --i;
+
+ if ( i > 0 && val - values[ i ] < tol )
+ di = -1;
+ else if ( i+2 < values.size() && values[ i+1 ] - val < tol )
+ di = 1;
+ else
+ di = 0;
+ }
+ //=============================================================================
/*
* Remove coincident intersection points
*/
if ( _intPoints.size() < 2 ) return;
set< Transition > tranSet;
- multiset< IntersectionPoint >::iterator ip1, ip2 = _intPoints.begin();
+ multiset< F_IntersectPoint >::iterator ip1, ip2 = _intPoints.begin();
while ( ip2 != _intPoints.end() )
{
tranSet.clear();
ip1 = ip2++;
- while ( ip2->_paramOnLine - ip1->_paramOnLine <= tol && ip2 != _intPoints.end())
+ while ( ip2 != _intPoints.end() && ip2->_paramOnLine - ip1->_paramOnLine <= tol )
{
tranSet.insert( ip1->_transition );
tranSet.insert( ip2->_transition );
+ ip2->Add( ip1->_faceIDs );
_intPoints.erase( ip1 );
ip1 = ip2++;
}
/*
* Return "is OUT" state for nodes before the given intersection point
*/
- bool GridLine::GetIsOutBefore( multiset< IntersectionPoint >::iterator ip, bool prevIsOut )
+ bool GridLine::GetIsOutBefore( multiset< F_IntersectPoint >::iterator ip, bool prevIsOut )
{
if ( ip->_transition == Trans_IN )
return true;
// singularity point (apex of a cone)
if ( _intPoints.size() == 1 || ip == _intPoints.begin() )
return true;
- multiset< IntersectionPoint >::iterator ipBef = ip, ipAft = ++ip;
+ multiset< F_IntersectPoint >::iterator ipBef = ip, ipAft = ++ip;
if ( ipAft == _intPoints.end() )
return false;
--ipBef;
return ( ipBef->_transition == Trans_OUT );
return ( ipBef->_transition != Trans_OUT );
}
- return prevIsOut; // _transition == Trans_TANGENT
+ // _transition == Trans_TANGENT
+ return !prevIsOut;
+ }
+ //================================================================================
+ /*
+ * Adds face IDs
+ */
+ void B_IntersectPoint::Add( const vector< TGeomID >& fIDs,
+ const SMDS_MeshNode* n) const
+ {
+ if ( _faceIDs.empty() )
+ _faceIDs = fIDs;
+ else
+ for ( size_t i = 0; i < fIDs.size(); ++i )
+ {
+ vector< TGeomID >::iterator it =
+ std::find( _faceIDs.begin(), _faceIDs.end(), fIDs[i] );
+ if ( it == _faceIDs.end() )
+ _faceIDs.push_back( fIDs[i] );
+ }
+ if ( !_node )
+ _node = n;
+ }
+ //================================================================================
+ /*
+ * Returns index of a common face if any, else zero
+ */
+ int B_IntersectPoint::HasCommonFace( const B_IntersectPoint * other, int avoidFace ) const
+ {
+ if ( other )
+ for ( size_t i = 0; i < other->_faceIDs.size(); ++i )
+ if ( avoidFace != other->_faceIDs[i] &&
+ IsOnFace ( other->_faceIDs[i] ))
+ return other->_faceIDs[i];
+ return 0;
+ }
+ //================================================================================
+ /*
+ * Returns \c true if \a faceID in in this->_faceIDs
+ */
+ bool B_IntersectPoint::IsOnFace( int faceID ) const // returns true if faceID is found
+ {
+ vector< TGeomID >::const_iterator it =
+ std::find( _faceIDs.begin(), _faceIDs.end(), faceID );
+ return ( it != _faceIDs.end() );
}
//================================================================================
/*
LineIndexer Grid::GetLineIndexer(size_t iDir) const
{
const size_t indices[] = { 1,2,0, 0,2,1, 0,1,2 };
- const string s[] = { "X", "Y", "Z" };
+ const string s [] = { "X", "Y", "Z" };
LineIndexer li( _coords[0].size(), _coords[1].size(), _coords[2].size(),
indices[iDir*3], indices[iDir*3+1], indices[iDir*3+2],
s[indices[iDir*3]], s[indices[iDir*3+1]], s[indices[iDir*3+2]]);
void Grid::SetCoordinates(const vector<double>& xCoords,
const vector<double>& yCoords,
const vector<double>& zCoords,
- const TopoDS_Shape& shape)
+ const double* axesDirs,
+ const Bnd_Box& shapeBox)
{
_coords[0] = xCoords;
_coords[1] = yCoords;
_coords[2] = zCoords;
+ _axes[0].SetCoord( axesDirs[0],
+ axesDirs[1],
+ axesDirs[2]);
+ _axes[1].SetCoord( axesDirs[3],
+ axesDirs[4],
+ axesDirs[5]);
+ _axes[2].SetCoord( axesDirs[6],
+ axesDirs[7],
+ axesDirs[8]);
+ _axes[0].Normalize();
+ _axes[1].Normalize();
+ _axes[2].Normalize();
+
+ _invB.SetCols( _axes[0], _axes[1], _axes[2] );
+ _invB.Invert();
+
// compute tolerance
_minCellSize = Precision::Infinite();
for ( int iDir = 0; iDir < 3; ++iDir ) // loop on 3 line directions
}
if ( _minCellSize < Precision::Confusion() )
throw SMESH_ComputeError (COMPERR_ALGO_FAILED,
- SMESH_Comment("Too small cell size: ") << _tol );
+ SMESH_Comment("Too small cell size: ") << _minCellSize );
_tol = _minCellSize / 1000.;
- // attune grid extremities to shape bounding box computed by vertices
- Bnd_Box shapeBox;
- for ( TopExp_Explorer vExp( shape, TopAbs_VERTEX ); vExp.More(); vExp.Next() )
- shapeBox.Add( BRep_Tool::Pnt( TopoDS::Vertex( vExp.Current() )));
-
+ // attune grid extremities to shape bounding box
+
double sP[6]; // aXmin, aYmin, aZmin, aXmax, aYmax, aZmax
shapeBox.Get(sP[0],sP[1],sP[2],sP[3],sP[4],sP[5]);
double* cP[6] = { &_coords[0].front(), &_coords[1].front(), &_coords[2].front(),
&_coords[0].back(), &_coords[1].back(), &_coords[2].back() };
for ( int i = 0; i < 6; ++i )
if ( fabs( sP[i] - *cP[i] ) < _tol )
- *cP[i] = sP[i] + _tol/1000. * ( i < 3 ? +1 : -1 );
+ *cP[i] = sP[i];// + _tol/1000. * ( i < 3 ? +1 : -1 );
+
+ for ( int iDir = 0; iDir < 3; ++iDir )
+ {
+ if ( _coords[iDir][0] - sP[iDir] > _tol )
+ {
+ _minCellSize = Min( _minCellSize, _coords[iDir][0] - sP[iDir] );
+ _coords[iDir].insert( _coords[iDir].begin(), sP[iDir] + _tol/1000.);
+ }
+ if ( sP[iDir+3] - _coords[iDir].back() > _tol )
+ {
+ _minCellSize = Min( _minCellSize, sP[iDir+3] - _coords[iDir].back() );
+ _coords[iDir].push_back( sP[iDir+3] - _tol/1000.);
+ }
+ }
+ _tol = _minCellSize / 1000.;
+
+ _origin = ( _coords[0][0] * _axes[0] +
+ _coords[1][0] * _axes[1] +
+ _coords[2][0] * _axes[2] );
// create lines
for ( int iDir = 0; iDir < 3; ++iDir ) // loop on 3 line directions
LineIndexer li = GetLineIndexer( iDir );
_lines[iDir].resize( li.NbLines() );
double len = _coords[ iDir ].back() - _coords[iDir].front();
- gp_Vec dir( iDir==0, iDir==1, iDir==2 );
for ( ; li.More(); ++li )
{
GridLine& gl = _lines[iDir][ li.LineIndex() ];
- gl._line.SetLocation(gp_Pnt(_coords[0][li.I()], _coords[1][li.J()], _coords[2][li.K()]));
- gl._line.SetDirection( dir );
+ gl._line.SetLocation( _coords[0][li.I()] * _axes[0] +
+ _coords[1][li.J()] * _axes[1] +
+ _coords[2][li.K()] * _axes[2] );
+ gl._line.SetDirection( _axes[ iDir ]);
gl._length = len;
}
}
}
//================================================================================
+ /*
+ * Computes coordinates of a point in the grid CS
+ */
+ void Grid::ComputeUVW(const gp_XYZ& P, double UVW[3])
+ {
+ gp_XYZ p = P * _invB;
+ p.Coord( UVW[0], UVW[1], UVW[2] );
+ }
+ //================================================================================
/*
* Creates all nodes
*/
void Grid::ComputeNodes(SMESH_MesherHelper& helper)
{
- // state of each node of the grid relative to the geomerty
+ // state of each node of the grid relative to the geometry
const size_t nbGridNodes = _coords[0].size() * _coords[1].size() * _coords[2].size();
vector< bool > isNodeOut( nbGridNodes, false );
_nodes.resize( nbGridNodes, 0 );
- _isBndNode.resize( nbGridNodes, false );
+ _gridIntP.resize( nbGridNodes, NULL );
for ( int iDir = 0; iDir < 3; ++iDir ) // loop on 3 line directions
{
nIndex0 = NodeIndex( li.I(), li.J(), li.K() );
GridLine& line = _lines[ iDir ][ li.LineIndex() ];
+ const gp_XYZ lineLoc = line._line.Location().XYZ();
+ const gp_XYZ lineDir = line._line.Direction().XYZ();
line.RemoveExcessIntPoints( _tol );
- multiset< IntersectionPoint >& intPnts = _lines[ iDir ][ li.LineIndex() ]._intPoints;
- multiset< IntersectionPoint >::iterator ip = intPnts.begin();
+ multiset< F_IntersectPoint >& intPnts = line._intPoints;
+ multiset< F_IntersectPoint >::iterator ip = intPnts.begin();
bool isOut = true;
- const double* nodeCoord = & coords[0], *coord0 = nodeCoord, *coordEnd = coord0 + coords.size();
+ const double* nodeCoord = & coords[0];
+ const double* coord0 = nodeCoord;
+ const double* coordEnd = coord0 + coords.size();
double nodeParam = 0;
for ( ; ip != intPnts.end(); ++ip )
{
// create a mesh node on a GridLine at ip if it does not coincide with a grid node
if ( nodeParam > ip->_paramOnLine + _tol )
{
- li.SetIndexOnLine( 0 );
- double xyz[3] = { _coords[0][ li.I() ], _coords[1][ li.J() ], _coords[2][ li.K() ]};
- xyz[ li._iConst ] += ip->_paramOnLine;
- ip->_node = helper.AddNode( xyz[0], xyz[1], xyz[2] );
+ // li.SetIndexOnLine( 0 );
+ // double xyz[3] = { _coords[0][ li.I() ], _coords[1][ li.J() ], _coords[2][ li.K() ]};
+ // xyz[ li._iConst ] += ip->_paramOnLine;
+ gp_XYZ xyz = lineLoc + ip->_paramOnLine * lineDir;
+ ip->_node = helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() );
ip->_indexOnLine = nodeCoord-coord0-1;
}
// create a mesh node at ip concident with a grid node
else
{
int nodeIndex = nIndex0 + nShift * ( nodeCoord-coord0 );
- if ( ! _nodes[ nodeIndex ] )
+ if ( !_nodes[ nodeIndex ] )
{
- li.SetIndexOnLine( nodeCoord-coord0 );
- double xyz[3] = { _coords[0][ li.I() ], _coords[1][ li.J() ], _coords[2][ li.K() ]};
- _nodes[ nodeIndex ] = helper.AddNode( xyz[0], xyz[1], xyz[2] );
- _isBndNode[ nodeIndex ] = true;
+ //li.SetIndexOnLine( nodeCoord-coord0 );
+ //double xyz[3] = { _coords[0][ li.I() ], _coords[1][ li.J() ], _coords[2][ li.K() ]};
+ gp_XYZ xyz = lineLoc + nodeParam * lineDir;
+ _nodes [ nodeIndex ] = helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() );
+ _gridIntP[ nodeIndex ] = & * ip;
}
- //ip->_node = _nodes[ nodeIndex ];
+ if ( _gridIntP[ nodeIndex ] )
+ _gridIntP[ nodeIndex ]->Add( ip->_faceIDs );
+ else
+ _gridIntP[ nodeIndex ] = & * ip;
+ // ip->_node = _nodes[ nodeIndex ]; -- to differ from ip on links
ip->_indexOnLine = nodeCoord-coord0;
if ( ++nodeCoord < coordEnd )
nodeParam = *nodeCoord - *coord0;
{
size_t nodeIndex = NodeIndex( x, y, z );
if ( !isNodeOut[ nodeIndex ] && !_nodes[ nodeIndex] )
- _nodes[ nodeIndex ] = helper.AddNode( _coords[0][x], _coords[1][y], _coords[2][z] );
+ {
+ //_nodes[ nodeIndex ] = helper.AddNode( _coords[0][x], _coords[1][y], _coords[2][z] );
+ gp_XYZ xyz = ( _coords[0][x] * _axes[0] +
+ _coords[1][y] * _axes[1] +
+ _coords[2][z] * _axes[2] );
+ _nodes[ nodeIndex ] = helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() );
+ }
}
#ifdef _MY_DEBUG_
LineIndexer li = GetLineIndexer( iDir );
for ( ; li.More(); ++li )
{
- multiset< IntersectionPoint >& intPnts = _lines[ iDir ][ li.LineIndex() ]._intPoints;
+ multiset< F_IntersectPoint >& intPnts = _lines[ iDir ][ li.LineIndex() ]._intPoints;
if ( intPnts.empty() ) continue;
if ( intPnts.size() == 1 )
{
#endif
}
- //=============================================================================
- /*
- * Checks if the face is encosed by the grid
- */
- bool FaceGridIntersector::IsInGrid(const Bnd_Box& gridBox)
- {
- double x0,y0,z0, x1,y1,z1;
- const Bnd_Box& faceBox = GetFaceBndBox();
- faceBox.Get(x0,y0,z0, x1,y1,z1);
-
- if ( !gridBox.IsOut( gp_Pnt( x0,y0,z0 )) &&
- !gridBox.IsOut( gp_Pnt( x1,y1,z1 )))
- return true;
-
- double X0,Y0,Z0, X1,Y1,Z1;
- gridBox.Get(X0,Y0,Z0, X1,Y1,Z1);
- double faceP[6] = { x0,y0,z0, x1,y1,z1 };
- double gridP[6] = { X0,Y0,Z0, X1,Y1,Z1 };
- gp_Dir axes[3] = { gp::DX(), gp::DY(), gp::DZ() };
- for ( int iDir = 0; iDir < 6; ++iDir )
- {
- if ( iDir < 3 && gridP[ iDir ] <= faceP[ iDir ] ) continue;
- if ( iDir >= 3 && gridP[ iDir ] >= faceP[ iDir ] ) continue;
-
- // check if the face intersects a side of a gridBox
-
- gp_Pnt p = iDir < 3 ? gp_Pnt( X0,Y0,Z0 ) : gp_Pnt( X1,Y1,Z1 );
- gp_Ax1 norm( p, axes[ iDir % 3 ] );
- if ( iDir < 3 ) norm.Reverse();
-
- gp_XYZ O = norm.Location().XYZ(), N = norm.Direction().XYZ();
-
- TopLoc_Location loc = _face.Location();
- Handle(Poly_Triangulation) aPoly = BRep_Tool::Triangulation(_face,loc);
- if ( !aPoly.IsNull() )
- {
- if ( !loc.IsIdentity() )
- {
- norm.Transform( loc.Transformation().Inverted() );
- O = norm.Location().XYZ(), N = norm.Direction().XYZ();
- }
- const double deflection = aPoly->Deflection();
-
- const TColgp_Array1OfPnt& nodes = aPoly->Nodes();
- for ( int i = nodes.Lower(); i <= nodes.Upper(); ++i )
- if (( nodes( i ).XYZ() - O ) * N > _grid->_tol + deflection )
- return false;
- }
- else
- {
- BRepAdaptor_Surface surf( _face );
- double u0, u1, v0, v1, du, dv, u, v;
- BRepTools::UVBounds( _face, u0, u1, v0, v1);
- if ( surf.GetType() == GeomAbs_Plane ) {
- du = u1 - u0, dv = v1 - v0;
- }
- else {
- du = surf.UResolution( _grid->_minCellSize / 10. );
- dv = surf.VResolution( _grid->_minCellSize / 10. );
- }
- for ( u = u0, v = v0; u <= u1 && v <= v1; u += du, v += dv )
- {
- gp_Pnt p = surf.Value( u, v );
- if (( p.XYZ() - O ) * N > _grid->_tol )
- {
- TopAbs_State state = GetCurveFaceIntersector()->ClassifyUVPoint(gp_Pnt2d( u, v ));
- if ( state == TopAbs_IN || state == TopAbs_ON )
- return false;
- }
- }
- }
- }
- return true;
- }
//=============================================================================
/*
* Intersects TopoDS_Face with all GridLine's
typedef void (FaceLineIntersector::* PIntFun )(const GridLine& gridLine);
PIntFun interFunction;
+ bool isDirect = true;
BRepAdaptor_Surface surf( _face );
switch ( surf.GetType() ) {
case GeomAbs_Plane:
intersector._plane = surf.Plane();
interFunction = &FaceLineIntersector::IntersectWithPlane;
+ isDirect = intersector._plane.Direct();
break;
case GeomAbs_Cylinder:
intersector._cylinder = surf.Cylinder();
interFunction = &FaceLineIntersector::IntersectWithCylinder;
+ isDirect = intersector._cylinder.Direct();
break;
case GeomAbs_Cone:
intersector._cone = surf.Cone();
interFunction = &FaceLineIntersector::IntersectWithCone;
+ //isDirect = intersector._cone.Direct();
break;
case GeomAbs_Sphere:
intersector._sphere = surf.Sphere();
interFunction = &FaceLineIntersector::IntersectWithSphere;
+ isDirect = intersector._sphere.Direct();
break;
case GeomAbs_Torus:
intersector._torus = surf.Torus();
interFunction = &FaceLineIntersector::IntersectWithTorus;
+ //isDirect = intersector._torus.Direct();
break;
default:
interFunction = &FaceLineIntersector::IntersectWithSurface;
}
+ if ( !isDirect )
+ std::swap( intersector._transOut, intersector._transIn );
_intersections.clear();
for ( int iDir = 0; iDir < 3; ++iDir ) // loop on 3 line directions
if ( _bndBox.IsOut( gridLine._line )) continue;
intersector._intPoints.clear();
- (intersector.*interFunction)( gridLine );
+ (intersector.*interFunction)( gridLine ); // <- intersection with gridLine
for ( size_t i = 0; i < intersector._intPoints.size(); ++i )
_intersections.push_back( make_pair( &gridLine, intersector._intPoints[i] ));
}
{
if ( !toClassify || UVIsOnFace() )
{
- IntersectionPoint p;
+ F_IntersectPoint p;
p._paramOnLine = _w;
p._transition = _transition;
_intPoints.push_back( p );
*/
void FaceLineIntersector::IntersectWithCylinder(const GridLine& gridLine)
{
- IntAna_IntConicQuad linCylinder( gridLine._line,_cylinder);
+ IntAna_IntConicQuad linCylinder( gridLine._line, _cylinder );
if ( linCylinder.IsDone() && linCylinder.NbPoints() > 0 )
{
_w = linCylinder.ParamOnConic(1);
* \brief Creates topology of the hexahedron
*/
Hexahedron::Hexahedron(const double sizeThreshold, Grid* grid)
- : _grid( grid ), _sizeThreshold( sizeThreshold ), _nbIntNodes(0)
+ : _grid( grid ), _sizeThreshold( sizeThreshold ), _nbFaceIntNodes(0)
{
_polygons.reserve(100); // to avoid reallocation;
_Link& link = _hexLinks[ SMESH_Block::ShapeIndex( linkID )];
link._nodes[0] = &_hexNodes[ SMESH_Block::ShapeIndex( idVec[0] )];
link._nodes[1] = &_hexNodes[ SMESH_Block::ShapeIndex( idVec[1] )];
- link._intNodes.reserve( 10 ); // to avoid reallocation
- link._splits.reserve( 10 );
}
// set links to faces
* \brief Copy constructor
*/
Hexahedron::Hexahedron( const Hexahedron& other )
- :_grid( other._grid ), _sizeThreshold( other._sizeThreshold ), _nbIntNodes(0)
+ :_grid( other._grid ), _sizeThreshold( other._sizeThreshold ), _nbFaceIntNodes(0)
{
_polygons.reserve(100); // to avoid reallocation;
_Link& tgtLink = this->_hexLinks[ i ];
tgtLink._nodes[0] = _hexNodes + ( srcLink._nodes[0] - other._hexNodes );
tgtLink._nodes[1] = _hexNodes + ( srcLink._nodes[1] - other._hexNodes );
- tgtLink._intNodes.reserve( 10 ); // to avoid reallocation
- tgtLink._splits.reserve( 10 );
}
for ( int i = 0; i < 6; ++i )
_origNodeInd = _grid->NodeIndex( i,j,k );
for ( int iN = 0; iN < 8; ++iN )
{
- _hexNodes[iN]._node = _grid->_nodes[ _origNodeInd + _nodeShift[iN] ];
+ _hexNodes[iN]._node = _grid->_nodes [ _origNodeInd + _nodeShift[iN] ];
+ _hexNodes[iN]._intPoint = _grid->_gridIntP[ _origNodeInd + _nodeShift[iN] ];
_nbCornerNodes += bool( _hexNodes[iN]._node );
- _nbBndNodes += _grid->_isBndNode[ _origNodeInd + _nodeShift[iN] ];
+ _nbBndNodes += bool( _hexNodes[iN]._intPoint );
}
_sideLength[0] = _grid->_coords[0][i+1] - _grid->_coords[0][i];
_sideLength[1] = _grid->_coords[1][j+1] - _grid->_coords[1][j];
_sideLength[2] = _grid->_coords[2][k+1] - _grid->_coords[2][k];
- if ( _nbCornerNodes < 8 && _nbIntNodes + _nbCornerNodes > 3)
+ _intNodes.clear();
+ _vIntNodes.clear();
+
+ if ( _nbFaceIntNodes + _eIntPoints.size() > 0 &&
+ _nbFaceIntNodes + _nbCornerNodes + _eIntPoints.size() > 3)
{
+ _intNodes.reserve( 3 * _nbBndNodes + _nbFaceIntNodes + _eIntPoints.size() );
+
_Link split;
- // create sub-links (_splits) by splitting links with _intNodes
+ // create sub-links (_splits) by splitting links with _fIntPoints
for ( int iLink = 0; iLink < 12; ++iLink )
{
_Link& link = _hexLinks[ iLink ];
+ link._fIntNodes.resize( link._fIntPoints.size() );
+ for ( size_t i = 0; i < link._fIntPoints.size(); ++i )
+ {
+ _intNodes.push_back( _Node( 0, link._fIntPoints[i] ));
+ link._fIntNodes[ i ] = & _intNodes.back();
+ }
+
link._splits.clear();
split._nodes[ 0 ] = link._nodes[0];
- for ( size_t i = 0; i < link._intNodes.size(); ++ i )
+ bool isOut = ( ! link._nodes[0]->Node() ); // is1stNodeOut( iLink );
+ bool checkTransition;
+ for ( size_t i = 0; i < link._fIntNodes.size(); ++i )
{
- if ( split._nodes[ 0 ]->Node() )
+ if ( link._fIntNodes[i]->Node() ) // intersection non-coinsident with a grid node
{
- split._nodes[ 1 ] = &link._intNodes[i];
- link._splits.push_back( split );
+ if ( split._nodes[ 0 ]->Node() && !isOut )
+ {
+ split._nodes[ 1 ] = link._fIntNodes[i];
+ link._splits.push_back( split );
+ }
+ split._nodes[ 0 ] = link._fIntNodes[i];
+ checkTransition = true;
+ }
+ else // FACE intersection coinsident with a grid node
+ {
+ checkTransition = ( link._nodes[0]->Node() );
+ }
+ if ( checkTransition )
+ {
+ switch ( link._fIntPoints[i]->_transition ) {
+ case Trans_OUT: isOut = true; break;
+ case Trans_IN : isOut = false; break;
+ default:
+ if ( !link._fIntNodes[i]->Node() && i == 0 )
+ isOut = is1stNodeOut( link );
+ else
+ ; // isOut remains the same
+ }
}
- split._nodes[ 0 ] = &link._intNodes[i];
}
- if ( link._nodes[ 1 ]->Node() && split._nodes[ 0 ]->Node() )
+ if ( link._nodes[ 1 ]->Node() && split._nodes[ 0 ]->Node() && !isOut )
{
split._nodes[ 1 ] = link._nodes[1];
link._splits.push_back( split );
}
}
+
+ // Create _Node's at intersections with EDGEs.
+
+ const double tol2 = _grid->_tol * _grid->_tol;
+ int facets[3], nbFacets, subEntity;
+
+ for ( size_t iP = 0; iP < _eIntPoints.size(); ++iP )
+ {
+ nbFacets = getEntity( _eIntPoints[iP], facets, subEntity );
+ _Node* equalNode = 0;
+ switch( nbFacets ) {
+ case 1: // in a _Face
+ {
+ _Face& quad = _hexQuads[ facets[0] - SMESH_Block::ID_FirstF ];
+ equalNode = FindEqualNode( quad._eIntNodes, _eIntPoints[ iP ], tol2 );
+ if ( equalNode ) {
+ equalNode->Add( _eIntPoints[ iP ] );
+ }
+ else {
+ _intNodes.push_back( _Node( 0, _eIntPoints[ iP ]));
+ quad._eIntNodes.push_back( & _intNodes.back() );
+ }
+ break;
+ }
+ case 2: // on a _Link
+ {
+ _Link& link = _hexLinks[ subEntity - SMESH_Block::ID_FirstE ];
+ if ( link._splits.size() > 0 )
+ {
+ equalNode = FindEqualNode( link._fIntNodes, _eIntPoints[ iP ], tol2 );
+ if ( equalNode )
+ equalNode->Add( _eIntPoints[ iP ] );
+ }
+ else
+ {
+ _intNodes.push_back( _Node( 0, _eIntPoints[ iP ]));
+ for ( int iF = 0; iF < 2; ++iF )
+ {
+ _Face& quad = _hexQuads[ facets[iF] - SMESH_Block::ID_FirstF ];
+ equalNode = FindEqualNode( quad._eIntNodes, _eIntPoints[ iP ], tol2 );
+ if ( equalNode ) {
+ equalNode->Add( _eIntPoints[ iP ] );
+ }
+ else {
+ quad._eIntNodes.push_back( & _intNodes.back() );
+ }
+ }
+ }
+ break;
+ }
+ case 3: // at a corner
+ {
+ _Node& node = _hexNodes[ subEntity - SMESH_Block::ID_FirstV ];
+ if ( node.Node() > 0 )
+ {
+ if ( node._intPoint )
+ node._intPoint->Add( _eIntPoints[ iP ]->_faceIDs, _eIntPoints[ iP ]->_node );
+ }
+ else
+ {
+ _intNodes.push_back( _Node( 0, _eIntPoints[ iP ]));
+ for ( int iF = 0; iF < 3; ++iF )
+ {
+ _Face& quad = _hexQuads[ facets[iF] - SMESH_Block::ID_FirstF ];
+ equalNode = FindEqualNode( quad._eIntNodes, _eIntPoints[ iP ], tol2 );
+ if ( equalNode ) {
+ equalNode->Add( _eIntPoints[ iP ] );
+ }
+ else {
+ quad._eIntNodes.push_back( & _intNodes.back() );
+ }
+ }
+ }
+ break;
+ }
+ } // switch( nbFacets )
+
+ if ( nbFacets == 0 ||
+ _grid->_shapes( _eIntPoints[ iP ]->_shapeID ).ShapeType() == TopAbs_VERTEX )
+ {
+ equalNode = FindEqualNode( _vIntNodes, _eIntPoints[ iP ], tol2 );
+ if ( equalNode ) {
+ equalNode->Add( _eIntPoints[ iP ] );
+ }
+ else {
+ if ( _intNodes.empty() || _intNodes.back().EdgeIntPnt() != _eIntPoints[ iP ])
+ _intNodes.push_back( _Node( 0, _eIntPoints[ iP ]));
+ _vIntNodes.push_back( & _intNodes.back() );
+ }
+ }
+ } // loop on _eIntPoints
+ }
+ else if ( 3 < _nbCornerNodes && _nbCornerNodes < 8 ) // _nbFaceIntNodes == 0
+ {
+ _Link split;
+ // create sub-links (_splits) of whole links
+ for ( int iLink = 0; iLink < 12; ++iLink )
+ {
+ _Link& link = _hexLinks[ iLink ];
+ link._splits.clear();
+ if ( link._nodes[ 0 ]->Node() && link._nodes[ 1 ]->Node() )
+ {
+ split._nodes[ 0 ] = link._nodes[0];
+ split._nodes[ 1 ] = link._nodes[1];
+ link._splits.push_back( split );
+ }
+ }
}
+
}
//================================================================================
/*!
{
Init();
- if ( _nbCornerNodes + _nbIntNodes < 4 )
+ int nbIntersections = _nbFaceIntNodes + _eIntPoints.size();
+ if ( _nbCornerNodes + nbIntersections < 4 )
return;
- if ( _nbBndNodes == _nbCornerNodes && isInHole() )
+ if ( _nbBndNodes == _nbCornerNodes && nbIntersections == 0 && isInHole() )
return;
_polygons.clear();
+ _polygons.reserve( 20 );
- vector<const SMDS_MeshNode* > polyhedraNodes;
- vector<int> quantities;
-
- // create polygons from quadrangles and get their nodes
+ // Create polygons from quadrangles
+ // --------------------------------
- vector<_Node*> nodes;
- nodes.reserve( _nbCornerNodes + _nbIntNodes );
+ _Link polyLink;
+ vector< _OrientedLink > splits;
+ vector<_Node*> chainNodes, usedEdgeNodes;
+ _Face* coplanarPolyg;
- _Link polyLink;
- polyLink._faces.reserve( 1 );
+ bool hasEdgeIntersections = !_eIntPoints.empty();
for ( int iF = 0; iF < 6; ++iF ) // loop on 6 sides of a hexahedron
{
- const _Face& quad = _hexQuads[ iF ] ;
+ _Face& quad = _hexQuads[ iF ] ;
_polygons.resize( _polygons.size() + 1 );
- _Face& polygon = _polygons.back();
- polygon._links.clear();
- polygon._polyLinks.clear(); polygon._polyLinks.reserve( 10 );
+ _Face* polygon = &_polygons.back();
+ polygon->_polyLinks.reserve( 20 );
- // add splits of a link to a polygon and collect info on nodes
- //int nbIn = 0, nbOut = 0, nbCorners = 0;
- nodes.clear();
+ splits.clear();
for ( int iE = 0; iE < 4; ++iE ) // loop on 4 sides of a quadrangle
+ for ( int iS = 0; iS < quad._links[ iE ].NbResultLinks(); ++iS )
+ splits.push_back( quad._links[ iE ].ResultLink( iS ));
+
+ // add splits of links to a polygon and add _polyLinks to make
+ // polygon's boundary closed
+
+ int nbSplits = splits.size();
+ if ( nbSplits < 2 && quad._eIntNodes.empty() )
+ nbSplits = 0;
+
+#ifdef _DEBUG_
+ for ( size_t iP = 0; iP < quad._eIntNodes.size(); ++iP )
+ if ( quad._eIntNodes[ iP ]->IsUsedInFace( polygon ))
+ quad._eIntNodes[ iP ]->_usedInFace = 0;
+#endif
+ int nbUsedEdgeNodes = 0;
+
+ while ( nbSplits > 0 )
{
- int nbSpits = quad._links[ iE ].NbResultLinks();
- for ( int iS = 0; iS < nbSpits; ++iS )
+ size_t iS = 0;
+ while ( !splits[ iS ] )
+ ++iS;
+
+ if ( !polygon->_links.empty() )
+ {
+ _polygons.resize( _polygons.size() + 1 );
+ polygon = &_polygons.back();
+ polygon->_polyLinks.reserve( 20 );
+ }
+ polygon->_links.push_back( splits[ iS ] );
+ splits[ iS++ ]._link = 0;
+ --nbSplits;
+
+ _Node* nFirst = polygon->_links.back().FirstNode();
+ _Node *n1,*n2 = polygon->_links.back().LastNode();
+ for ( ; nFirst != n2 && iS < splits.size(); ++iS )
{
- _OrientedLink split = quad._links[ iE ].ResultLink( iS );
- _Node* n = split.FirstNode();
- if ( !polygon._links.empty() )
+ _OrientedLink& split = splits[ iS ];
+ if ( !split ) continue;
+
+ n1 = split.FirstNode();
+ if ( n1 != n2 )
{
- _Node* nPrev = polygon._links.back().LastNode();
- if ( nPrev != n )
+ // try to connect to intersections with EDGEs
+ if ( quad._eIntNodes.size() > nbUsedEdgeNodes &&
+ findChain( n2, n1, quad, chainNodes ))
+ {
+ for ( size_t i = 1; i < chainNodes.size(); ++i )
+ {
+ polyLink._nodes[0] = chainNodes[i-1];
+ polyLink._nodes[1] = chainNodes[i];
+ polygon->_polyLinks.push_back( polyLink );
+ polygon->_links.push_back( _OrientedLink( &polygon->_polyLinks.back() ));
+ nbUsedEdgeNodes += ( polyLink._nodes[1]->IsUsedInFace( polygon ));
+ }
+ if ( chainNodes.back() != n1 )
+ {
+ n2 = chainNodes.back();
+ --iS;
+ continue;
+ }
+ }
+ // try to connect to a split ending on the same FACE
+ else
{
- polyLink._nodes[0] = nPrev;
- polyLink._nodes[1] = n;
- polygon._polyLinks.push_back( polyLink );
- polygon._links.push_back( _OrientedLink( &polygon._polyLinks.back() ));
- nodes.push_back( nPrev );
+ _OrientedLink foundSplit;
+ for ( int i = iS; i < splits.size() && !foundSplit; ++i )
+ if (( foundSplit = splits[ i ]) &&
+ ( n2->IsLinked( foundSplit.FirstNode()->_intPoint )))
+ {
+ polyLink._nodes[0] = n2;
+ polyLink._nodes[1] = foundSplit.FirstNode();
+ polygon->_polyLinks.push_back( polyLink );
+ polygon->_links.push_back( _OrientedLink( &polygon->_polyLinks.back() ));
+ iS = i - 1;
+ }
+ else
+ {
+ foundSplit._link = 0;
+ }
+ if ( foundSplit )
+ {
+ n2 = foundSplit.FirstNode();
+ continue;
+ }
+ else
+ {
+ if ( n2->IsLinked( nFirst->_intPoint ))
+ break;
+ polyLink._nodes[0] = n2;
+ polyLink._nodes[1] = n1;
+ polygon->_polyLinks.push_back( polyLink );
+ polygon->_links.push_back( _OrientedLink( &polygon->_polyLinks.back() ));
+ }
}
}
- polygon._links.push_back( split );
- nodes.push_back( n );
+ polygon->_links.push_back( split );
+ split._link = 0;
+ --nbSplits;
+ n2 = polygon->_links.back().LastNode();
+
+ } // loop on splits
+
+ if ( nFirst != n2 ) // close a polygon
+ {
+ if ( !findChain( n2, nFirst, quad, chainNodes ))
+ {
+ if ( !closePolygon( polygon, chainNodes ))
+ chainNodes.push_back( nFirst );
+ }
+ for ( size_t i = 1; i < chainNodes.size(); ++i )
+ {
+ polyLink._nodes[0] = chainNodes[i-1];
+ polyLink._nodes[1] = chainNodes[i];
+ polygon->_polyLinks.push_back( polyLink );
+ polygon->_links.push_back( _OrientedLink( &polygon->_polyLinks.back() ));
+ nbUsedEdgeNodes += bool( polyLink._nodes[1]->IsUsedInFace( polygon ));
+ }
}
- }
- if ( polygon._links.size() > 1 )
- {
- _Node* n1 = polygon._links.back().LastNode();
- _Node* n2 = polygon._links.front().FirstNode();
- if ( n1 != n2 )
+
+ if ( polygon->_links.size() < 3 && nbSplits > 0 )
{
- polyLink._nodes[0] = n1;
- polyLink._nodes[1] = n2;
- polygon._polyLinks.push_back( polyLink );
- polygon._links.push_back( _OrientedLink( &polygon._polyLinks.back() ));
- nodes.push_back( n1 );
+ polygon->_polyLinks.clear();
+ polygon->_links.clear();
}
- // add polygon to its links
- for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
- polygon._links[ iL ]._link->_faces.push_back( &polygon );
- // store polygon nodes
- quantities.push_back( nodes.size() );
- for ( size_t i = 0; i < nodes.size(); ++i )
- polyhedraNodes.push_back( nodes[i]->Node() );
- }
- else
+ } // while ( nbSplits > 0 )
+
+ // if ( quad._eIntNodes.size() > nbUsedEdgeNodes )
+ // {
+ // // make _vIntNodes from not used _eIntNodes
+ // const double tol = 0.05 * Min( Min( _sideLength[0], _sideLength[1] ), _sideLength[0] );
+ // for ( size_t iP = 0; iP < quad._eIntNodes.size(); ++iP )
+ // {
+ // if ( quad._eIntNodes[ iP ]->IsUsedInFace() ) continue;
+ // _Node* equalNode =
+ // FindEqualNode( _vIntNodes, quad._eIntNodes[ iP ].EdgeIntPnt(), tol*tol );
+ // if ( equalNode )
+ // equalNode->Add( quad._eIntNodes[ iP ].EdgeIntPnt() );
+ // else
+ // _vIntNodes.push_back( quad._eIntNodes[ iP ]);
+ // }
+ // }
+
+ if ( polygon->_links.size() < 3 )
{
- _polygons.resize( _polygons.size() - 1 );
+ _polygons.pop_back();
+ //usedEdgeNodes.resize( usedEdgeNodes.size() - nbUsedEdgeNodes );
}
- }
+ } // loop on 6 hexahedron sides
- // create polygons closing holes in a polyhedron
+ // Create polygons closing holes in a polyhedron
+ // ----------------------------------------------
+ // clear _usedInFace
+ for ( size_t iN = 0; iN < _intNodes.size(); ++iN )
+ _intNodes[ iN ]._usedInFace = 0;
+
+ // add polygons to their links and mark used nodes
+ for ( size_t iP = 0; iP < _polygons.size(); ++iP )
+ {
+ _Face& polygon = _polygons[ iP ];
+ for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
+ {
+ polygon._links[ iL ].AddFace( &polygon );
+ polygon._links[ iL ].FirstNode()->_usedInFace = &polygon;
+ }
+ }
// find free links
vector< _OrientedLink* > freeLinks;
+ freeLinks.reserve(20);
for ( size_t iP = 0; iP < _polygons.size(); ++iP )
{
_Face& polygon = _polygons[ iP ];
for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
- if ( polygon._links[ iL ]._link->_faces.size() < 2 )
+ if ( polygon._links[ iL ].NbFaces() < 2 )
+ {
freeLinks.push_back( & polygon._links[ iL ]);
+ freeLinks.back()->FirstNode()->IsUsedInFace() == true;
+ }
}
- // make closed chains of free links
int nbFreeLinks = freeLinks.size();
- if ( 0 < nbFreeLinks && nbFreeLinks < 3 ) return;
+ if ( nbFreeLinks > 0 && nbFreeLinks < 3 ) return;
+
+ // put not used intersection nodes to _vIntNodes
+ int nbVertexNodes = 0; // nb not used vertex nodes
+ {
+ for ( size_t iN = 0; iN < _vIntNodes.size(); ++iN )
+ nbVertexNodes += ( !_vIntNodes[ iN ]->IsUsedInFace() );
+
+ const double tol = 1e-3 * Min( Min( _sideLength[0], _sideLength[1] ), _sideLength[0] );
+ for ( size_t iN = _nbFaceIntNodes; iN < _intNodes.size(); ++iN )
+ {
+ if ( _intNodes[ iN ].IsUsedInFace() ) continue;
+ if ( dynamic_cast< const F_IntersectPoint* >( _intNodes[ iN ]._intPoint )) continue;
+ _Node* equalNode =
+ FindEqualNode( _vIntNodes, _intNodes[ iN ].EdgeIntPnt(), tol*tol );
+ if ( !equalNode /*|| equalNode->IsUsedInFace()*/ )
+ {
+ _vIntNodes.push_back( &_intNodes[ iN ]);
+ ++nbVertexNodes;
+ }
+ }
+ }
+
+ set<TGeomID> usedFaceIDs;
+ TGeomID curFace = 0;
+ const size_t nbQuadPolygons = _polygons.size();
+
+ // create polygons by making closed chains of free links
+ size_t iPolygon = _polygons.size();
while ( nbFreeLinks > 0 )
{
- nodes.clear();
- _polygons.resize( _polygons.size() + 1 );
- _Face& polygon = _polygons.back();
- polygon._links.clear();
+ if ( iPolygon == _polygons.size() )
+ _polygons.resize( _polygons.size() + 1 );
+ _Face& polygon = _polygons[ iPolygon ];
+ polygon._polyLinks.reserve( 20 );
+ polygon._links.reserve( 20 );
- // get a remaining link to start from
_OrientedLink* curLink = 0;
- for ( size_t iL = 0; iL < freeLinks.size() && !curLink; ++iL )
- if (( curLink = freeLinks[ iL ] ))
- freeLinks[ iL ] = 0;
- nodes.push_back( curLink->LastNode() );
- polygon._links.push_back( *curLink );
-
- // find all links connected to curLink
- _Node* curNode = 0;
- do
- {
- curNode = curLink->FirstNode();
- curLink = 0;
+ _Node* curNode;
+ if (( !hasEdgeIntersections ) ||
+ ( nbFreeLinks < 4 && nbVertexNodes == 0 ))
+ {
+ // get a remaining link to start from
for ( size_t iL = 0; iL < freeLinks.size() && !curLink; ++iL )
- if ( freeLinks[ iL ] && freeLinks[ iL ]->LastNode() == curNode )
- {
- curLink = freeLinks[ iL ];
+ if (( curLink = freeLinks[ iL ] ))
freeLinks[ iL ] = 0;
- nodes.push_back( curNode );
- polygon._links.push_back( *curLink );
+ polygon._links.push_back( *curLink );
+ --nbFreeLinks;
+ do
+ {
+ // find all links connected to curLink
+ curNode = curLink->FirstNode();
+ curLink = 0;
+ for ( size_t iL = 0; iL < freeLinks.size() && !curLink; ++iL )
+ if ( freeLinks[ iL ] && freeLinks[ iL ]->LastNode() == curNode )
+ {
+ curLink = freeLinks[ iL ];
+ freeLinks[ iL ] = 0;
+ --nbFreeLinks;
+ polygon._links.push_back( *curLink );
+ }
+ } while ( curLink );
+ }
+ else // there are intersections with EDGEs
+ {
+ // get a remaining link to start from, one lying on minimal
+ // nb of FACEs
+ {
+ vector< pair< TGeomID, int > > facesOfLink[3];
+ pair< TGeomID, int > faceOfLink( -1, -1 );
+ vector< TGeomID > faces;
+ for ( size_t iL = 0; iL < freeLinks.size(); ++iL )
+ if ( freeLinks[ iL ] )
+ {
+ faces = freeLinks[ iL ]->GetNotUsedFace( usedFaceIDs );
+ if ( faces.size() == 1 )
+ {
+ faceOfLink = make_pair( faces[0], iL );
+ if ( !freeLinks[ iL ]->HasEdgeNodes() )
+ break;
+ facesOfLink[0].push_back( faceOfLink );
+ }
+ else if ( facesOfLink[0].empty() )
+ {
+ faceOfLink = make_pair(( faces.empty() ? -1 : faces[0]), iL );
+ facesOfLink[ 1 + faces.empty() ].push_back( faceOfLink );
+ }
+ }
+ for ( int i = 0; faceOfLink.second < 0 && i < 3; ++i )
+ if ( !facesOfLink[i].empty() )
+ faceOfLink = facesOfLink[i][0];
+
+ if ( faceOfLink.first < 0 ) // all faces used
+ {
+ for ( size_t i = 0; i < facesOfLink[2].size() && faceOfLink.first < 1; ++i )
+ {
+ curLink = freeLinks[ facesOfLink[2][i].second ];
+ faceOfLink.first = curLink->FirstNode()->IsLinked( curLink->LastNode()->_intPoint );
+ }
+ usedFaceIDs.clear();
}
- } while ( curLink );
+ curFace = faceOfLink.first;
+ curLink = freeLinks[ faceOfLink.second ];
+ freeLinks[ faceOfLink.second ] = 0;
+ }
+ usedFaceIDs.insert( curFace );
+ polygon._links.push_back( *curLink );
+ --nbFreeLinks;
- nbFreeLinks -= polygon._links.size();
+ // find all links bounding a FACE of curLink
+ do
+ {
+ // go forward from curLink
+ curNode = curLink->LastNode();
+ curLink = 0;
+ for ( size_t iL = 0; iL < freeLinks.size() && !curLink; ++iL )
+ if ( freeLinks[ iL ] &&
+ freeLinks[ iL ]->FirstNode() == curNode &&
+ freeLinks[ iL ]->LastNode()->IsOnFace( curFace ))
+ {
+ curLink = freeLinks[ iL ];
+ freeLinks[ iL ] = 0;
+ polygon._links.push_back( *curLink );
+ --nbFreeLinks;
+ }
+ } while ( curLink );
- if ( curNode != nodes.front() || polygon._links.size() < 3 )
- return; // closed polygon not found -> invalid polyhedron
+ std::reverse( polygon._links.begin(), polygon._links.end() );
- quantities.push_back( nodes.size() );
- for ( size_t i = 0; i < nodes.size(); ++i )
- polyhedraNodes.push_back( nodes[i]->Node() );
+ curLink = & polygon._links.back();
+ do
+ {
+ // go backward from curLink
+ curNode = curLink->FirstNode();
+ curLink = 0;
+ for ( size_t iL = 0; iL < freeLinks.size() && !curLink; ++iL )
+ if ( freeLinks[ iL ] &&
+ freeLinks[ iL ]->LastNode() == curNode &&
+ freeLinks[ iL ]->FirstNode()->IsOnFace( curFace ))
+ {
+ curLink = freeLinks[ iL ];
+ freeLinks[ iL ] = 0;
+ polygon._links.push_back( *curLink );
+ --nbFreeLinks;
+ }
+ } while ( curLink );
+
+ curNode = polygon._links.back().FirstNode();
+
+ if ( polygon._links[0].LastNode() != curNode )
+ {
+ if ( nbVertexNodes > 0 )
+ {
+ // add links with _vIntNodes if not already used
+ for ( size_t iN = 0; iN < _vIntNodes.size(); ++iN )
+ if ( !_vIntNodes[ iN ]->IsUsedInFace() &&
+ _vIntNodes[ iN ]->IsOnFace( curFace ))
+ {
+ _vIntNodes[ iN ]->_usedInFace = &polygon;
+ --nbVertexNodes;
+ polyLink._nodes[0] = _vIntNodes[ iN ];
+ polyLink._nodes[1] = curNode;
+ polygon._polyLinks.push_back( polyLink );
+ polygon._links.push_back( _OrientedLink( &polygon._polyLinks.back() ));
+ freeLinks.push_back( &polygon._links.back() );
+ ++nbFreeLinks;
+ curNode = _vIntNodes[ iN ];
+ // TODO: to reorder _vIntNodes within polygon, if there are several ones
+ }
+ }
+ // if ( polygon._links.size() > 1 )
+ {
+ polyLink._nodes[0] = polygon._links[0].LastNode();
+ polyLink._nodes[1] = curNode;
+ polygon._polyLinks.push_back( polyLink );
+ polygon._links.push_back( _OrientedLink( &polygon._polyLinks.back() ));
+ freeLinks.push_back( &polygon._links.back() );
+ ++nbFreeLinks;
+ }
+ }
+ } // if there are intersections with EDGEs
+
+ if ( polygon._links.size() < 2 ||
+ polygon._links[0].LastNode() != polygon._links.back().FirstNode() )
+ return; // closed polygon not found -> invalid polyhedron
- // add polygon to its links and reverse links
- for ( size_t i = 0; i < polygon._links.size(); ++i )
+ if ( polygon._links.size() == 2 )
{
- polygon._links[i].Reverse();
- polygon._links[i]._link->_faces.push_back( &polygon );
+ if ( freeLinks.back() == &polygon._links.back() )
+ {
+ freeLinks.pop_back();
+ --nbFreeLinks;
+ }
+ if ( polygon._links.front().NbFaces() > 0 )
+ polygon._links.back().AddFace( polygon._links.front()._link->_faces[0] );
+ if ( polygon._links.back().NbFaces() > 0 )
+ polygon._links.front().AddFace( polygon._links.back()._link->_faces[0] );
+
+ _polygons.pop_back();
}
+ else // polygon._links.size() >= 2
+ {
+ // add polygon to its links
+ for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
+ {
+ polygon._links[ iL ].AddFace( &polygon );
+ polygon._links[ iL ].Reverse();
+ }
+ if ( hasEdgeIntersections && iPolygon == _polygons.size() - 1 )
+ {
+ // check that a polygon does not lie in the plane of another polygon
+ coplanarPolyg = 0;
+ for ( size_t iL = 0; iL < polygon._links.size() && !coplanarPolyg; ++iL )
+ {
+ if ( polygon._links[ iL ].NbFaces() < 2 )
+ continue; // it's a just added free link
+ // look for a polygon made on a hexa side and sharing
+ // two or more haxa links
+ size_t iL2;
+ coplanarPolyg = polygon._links[ iL ]._link->_faces[0];
+ for ( iL2 = iL + 1; iL2 < polygon._links.size(); ++iL2 )
+ if ( polygon._links[ iL2 ]._link->_faces[0] == coplanarPolyg &&
+ !coplanarPolyg->isPolyLink( polygon._links[ iL2 ]) &&
+ coplanarPolyg < & _polygons[ nbQuadPolygons ])
+ break;
+ if ( iL2 == polygon._links.size() )
+ coplanarPolyg = 0;
+ }
+ if ( 0 /*coplanarPolyg*/ ) // coplanar polygon found
+ {
+ freeLinks.resize( freeLinks.size() - polygon._polyLinks.size() );
+ nbFreeLinks -= polygon._polyLinks.size();
+
+ // fill freeLinks with links not shared by coplanarPolyg and polygon
+ for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
+ if ( polygon._links[ iL ]._link->_faces[1] &&
+ polygon._links[ iL ]._link->_faces[0] != coplanarPolyg )
+ {
+ _Face* p = polygon._links[ iL ]._link->_faces[0];
+ for ( size_t iL2 = 0; iL2 < p->_links.size(); ++iL2 )
+ if ( p->_links[ iL2 ]._link == polygon._links[ iL ]._link )
+ {
+ freeLinks.push_back( & p->_links[ iL2 ] );
+ ++nbFreeLinks;
+ freeLinks.back()->RemoveFace( &polygon );
+ break;
+ }
+ }
+ for ( size_t iL = 0; iL < coplanarPolyg->_links.size(); ++iL )
+ if ( coplanarPolyg->_links[ iL ]._link->_faces[1] &&
+ coplanarPolyg->_links[ iL ]._link->_faces[1] != &polygon )
+ {
+ _Face* p = coplanarPolyg->_links[ iL ]._link->_faces[0];
+ if ( p == coplanarPolyg )
+ p = coplanarPolyg->_links[ iL ]._link->_faces[1];
+ for ( size_t iL2 = 0; iL2 < p->_links.size(); ++iL2 )
+ if ( p->_links[ iL2 ]._link == coplanarPolyg->_links[ iL ]._link )
+ {
+ freeLinks.push_back( & p->_links[ iL2 ] );
+ ++nbFreeLinks;
+ freeLinks.back()->RemoveFace( coplanarPolyg );
+ break;
+ }
+ }
+ // set coplanarPolyg to be re-created next
+ for ( size_t iP = 0; iP < _polygons.size(); ++iP )
+ if ( coplanarPolyg == & _polygons[ iP ] )
+ {
+ iPolygon = iP;
+ _polygons[ iPolygon ]._links.clear();
+ _polygons[ iPolygon ]._polyLinks.clear();
+ break;
+ }
+ if ( freeLinks.back() == &polygon._links.back() )
+ {
+ freeLinks.pop_back();
+ --nbFreeLinks;
+ }
+ _polygons.pop_back();
+ usedFaceIDs.erase( curFace );
+ continue;
+ } // if ( coplanarPolyg )
+ } // if ( hasEdgeIntersections )
- //const size_t firstPoly = _polygons.size();
- }
+ iPolygon = _polygons.size();
+
+ } // end of case ( polygon._links.size() > 2 )
+ } // while ( nbFreeLinks > 0 )
if ( ! checkPolyhedronSize() )
{
}
// create a classic cell if possible
- const int nbNodes = _nbCornerNodes + _nbIntNodes;
+ const int nbNodes = _nbCornerNodes + nbIntersections;
bool isClassicElem = false;
if ( nbNodes == 8 && _polygons.size() == 6 ) isClassicElem = addHexa();
else if ( nbNodes == 4 && _polygons.size() == 4 ) isClassicElem = addTetra();
else if ( nbNodes == 6 && _polygons.size() == 5 ) isClassicElem = addPenta();
else if ( nbNodes == 5 && _polygons.size() == 5 ) isClassicElem = addPyra ();
if ( !isClassicElem )
- _volumeDefs.set( polyhedraNodes, quantities );
+ {
+ _volumeDefs._nodes.clear();
+ _volumeDefs._quantities.clear();
+
+ for ( size_t iF = 0; iF < _polygons.size(); ++iF )
+ {
+ const size_t nbLinks = _polygons[ iF ]._links.size();
+ _volumeDefs._quantities.push_back( nbLinks );
+ for ( size_t iL = 0; iL < nbLinks; ++iL )
+ _volumeDefs._nodes.push_back( _polygons[ iF ]._links[ iL ].FirstNode() );
+ }
+ }
}
//================================================================================
/*!
* \brief Create elements in the mesh
*/
- int Hexahedron::MakeElements(SMESH_MesherHelper& helper)
+ int Hexahedron::MakeElements(SMESH_MesherHelper& helper,
+ const map< TGeomID, vector< TGeomID > >& edge2faceIDsMap)
{
SMESHDS_Mesh* mesh = helper.GetMeshDS();
size_t nbCells[3] = { _grid->_coords[0].size() - 1,
_grid->_coords[1].size() - 1,
_grid->_coords[2].size() - 1 };
- const size_t nbGridCells = nbCells[0] *nbCells [1] * nbCells[2];
+ const size_t nbGridCells = nbCells[0] * nbCells[1] * nbCells[2];
vector< Hexahedron* > intersectedHex( nbGridCells, 0 );
int nbIntHex = 0;
for ( ; lineInd.More(); ++lineInd )
{
GridLine& line = _grid->_lines[ iDir ][ lineInd.LineIndex() ];
- multiset< IntersectionPoint >::const_iterator ip = line._intPoints.begin();
+ multiset< F_IntersectPoint >::const_iterator ip = line._intPoints.begin();
for ( ; ip != line._intPoints.end(); ++ip )
{
- if ( !ip->_node ) continue;
+ // if ( !ip->_node ) continue; // intersection at a grid node
lineInd.SetIndexOnLine( ip->_indexOnLine );
for ( int iL = 0; iL < 4; ++iL ) // loop on 4 cells sharing a link
{
++nbIntHex;
}
const int iLink = iL + iDir * 4;
- hex->_hexLinks[iLink]._intNodes.push_back( _Node( 0, &(*ip) ));
- hex->_nbIntNodes++;
+ hex->_hexLinks[iLink]._fIntPoints.push_back( &(*ip) );
+ hex->_nbFaceIntNodes += bool( ip->_node );
}
}
}
}
+ // implement geom edges into the mesh
+ addEdges( helper, intersectedHex, edge2faceIDsMap );
+
// add not split hexadrons to the mesh
int nbAdded = 0;
vector<int> intHexInd( nbIntHex );
if ( hex )
{
intHexInd[ nbIntHex++ ] = i;
- if ( hex->_nbIntNodes > 0 ) continue;
- init( hex->_i, hex->_j, hex->_k );
+ if ( hex->_nbFaceIntNodes > 0 || hex->_eIntPoints.size() > 0 )
+ continue; // treat intersected hex later
+ this->init( hex->_i, hex->_j, hex->_k );
}
else
{
- init( i );
+ this->init( i );
}
- if ( _nbCornerNodes == 8 && ( _nbBndNodes < _nbCornerNodes || !isInHole() ))
+ if (( _nbCornerNodes == 8 ) &&
+ ( _nbBndNodes < _nbCornerNodes || !isInHole() ))
{
// order of _hexNodes is defined by enum SMESH_Block::TShapeID
SMDS_MeshElement* el =
{
// all intersection of hex with geometry are at grid nodes
hex = new Hexahedron( *this );
- hex->init( i );
+ hex->_i = _i;
+ hex->_j = _j;
+ hex->_k = _k;
intHexInd.push_back(0);
intHexInd[ nbIntHex++ ] = i;
}
return nbAdded;
}
+ //================================================================================
+ /*!
+ * \brief Implements geom edges into the mesh
+ */
+ void Hexahedron::addEdges(SMESH_MesherHelper& helper,
+ vector< Hexahedron* >& hexes,
+ const map< TGeomID, vector< TGeomID > >& edge2faceIDsMap)
+ {
+ if ( edge2faceIDsMap.empty() ) return;
+
+ // Prepare planes for intersecting with EDGEs
+ GridPlanes pln[3];
+ {
+ for ( int iDirZ = 0; iDirZ < 3; ++iDirZ ) // iDirZ gives normal direction to planes
+ {
+ GridPlanes& planes = pln[ iDirZ ];
+ int iDirX = ( iDirZ + 1 ) % 3;
+ int iDirY = ( iDirZ + 2 ) % 3;
+ planes._zNorm = ( _grid->_axes[ iDirX ] ^ _grid->_axes[ iDirY ] ).Normalized();
+ planes._zProjs.resize ( _grid->_coords[ iDirZ ].size() );
+ planes._zProjs [0] = 0;
+ const double zFactor = _grid->_axes[ iDirZ ] * planes._zNorm;
+ const vector< double > & u = _grid->_coords[ iDirZ ];
+ for ( int i = 1; i < planes._zProjs.size(); ++i )
+ {
+ planes._zProjs [i] = zFactor * ( u[i] - u[0] );
+ }
+ }
+ }
+ const double deflection = _grid->_minCellSize / 20.;
+ const double tol = _grid->_tol;
+ E_IntersectPoint ip;
+
+ // Intersect EDGEs with the planes
+ map< TGeomID, vector< TGeomID > >::const_iterator e2fIt = edge2faceIDsMap.begin();
+ for ( ; e2fIt != edge2faceIDsMap.end(); ++e2fIt )
+ {
+ const TGeomID edgeID = e2fIt->first;
+ const TopoDS_Edge & E = TopoDS::Edge( _grid->_shapes( edgeID ));
+ BRepAdaptor_Curve curve( E );
+ TopoDS_Vertex v1 = helper.IthVertex( 0, E, false );
+ TopoDS_Vertex v2 = helper.IthVertex( 1, E, false );
+
+ ip._faceIDs = e2fIt->second;
+ ip._shapeID = edgeID;
+
+ // discretize the EGDE
+ GCPnts_UniformDeflection discret( curve, deflection, true );
+ if ( !discret.IsDone() || discret.NbPoints() < 2 )
+ continue;
+
+ // perform intersection
+ for ( int iDirZ = 0; iDirZ < 3; ++iDirZ )
+ {
+ GridPlanes& planes = pln[ iDirZ ];
+ int iDirX = ( iDirZ + 1 ) % 3;
+ int iDirY = ( iDirZ + 2 ) % 3;
+ double xLen = _grid->_coords[ iDirX ].back() - _grid->_coords[ iDirX ][0];
+ double yLen = _grid->_coords[ iDirY ].back() - _grid->_coords[ iDirY ][0];
+ double zLen = _grid->_coords[ iDirZ ].back() - _grid->_coords[ iDirZ ][0];
+ int dIJK[3], d000[3] = { 0,0,0 };
+ double o[3] = { _grid->_coords[0][0],
+ _grid->_coords[1][0],
+ _grid->_coords[2][0] };
+
+ // locate the 1st point of a segment within the grid
+ gp_XYZ p1 = discret.Value( 1 ).XYZ();
+ double u1 = discret.Parameter( 1 );
+ double zProj1 = planes._zNorm * ( p1 - _grid->_origin );
+
+ _grid->ComputeUVW( p1, ip._uvw );
+ int iX1 = int(( ip._uvw[iDirX] - o[iDirX]) / xLen * (_grid->_coords[ iDirX ].size() - 1));
+ int iY1 = int(( ip._uvw[iDirY] - o[iDirY]) / yLen * (_grid->_coords[ iDirY ].size() - 1));
+ int iZ1 = int(( ip._uvw[iDirZ] - o[iDirZ]) / zLen * (_grid->_coords[ iDirZ ].size() - 1));
+ locateValue( iX1, ip._uvw[iDirX], _grid->_coords[ iDirX ], dIJK[ iDirX ], tol );
+ locateValue( iY1, ip._uvw[iDirY], _grid->_coords[ iDirY ], dIJK[ iDirY ], tol );
+ locateValue( iZ1, ip._uvw[iDirZ], _grid->_coords[ iDirZ ], dIJK[ iDirZ ], tol );
+
+ int ijk[3]; // grid index where a segment intersect a plane
+ ijk[ iDirX ] = iX1;
+ ijk[ iDirY ] = iY1;
+ ijk[ iDirZ ] = iZ1;
+
+ // add the 1st vertex point to a hexahedron
+ if ( iDirZ == 0 )
+ {
+ ip._point = p1;
+ ip._shapeID = _grid->_shapes.Add( v1 );
+ _grid->_edgeIntP.push_back( ip );
+ if ( !addIntersection( _grid->_edgeIntP.back(), hexes, ijk, d000 ))
+ _grid->_edgeIntP.pop_back();
+ ip._shapeID = edgeID;
+ }
+ for ( int iP = 2; iP <= discret.NbPoints(); ++iP )
+ {
+ // locate the 2nd point of a segment within the grid
+ gp_XYZ p2 = discret.Value( iP ).XYZ();
+ double u2 = discret.Parameter( iP );
+ double zProj2 = planes._zNorm * ( p2 - _grid->_origin );
+ int iZ2 = iZ1;
+ if ( Abs( zProj2 - zProj1 ) <= std::numeric_limits<double>::min() )
+ continue;
+ locateValue( iZ2, zProj2, planes._zProjs, dIJK[ iDirZ ], tol );
+
+ // treat intersections with planes between 2 end points of a segment
+ int dZ = ( iZ1 <= iZ2 ) ? +1 : -1;
+ int iZ = iZ1 + ( iZ1 < iZ2 );
+ for ( int i = 0, nb = Abs( iZ1 - iZ2 ); i < nb; ++i, iZ += dZ )
+ {
+ ip._point = findIntPoint( u1, zProj1, u2, zProj2,
+ planes._zProjs[ iZ ],
+ curve, planes._zNorm, _grid->_origin );
+ _grid->ComputeUVW( ip._point.XYZ(), ip._uvw );
+ locateValue( ijk[iDirX], ip._uvw[iDirX], _grid->_coords[iDirX], dIJK[iDirX], tol );
+ locateValue( ijk[iDirY], ip._uvw[iDirY], _grid->_coords[iDirY], dIJK[iDirY], tol );
+ ijk[ iDirZ ] = iZ;
+
+ // add ip to hex "above" the plane
+ _grid->_edgeIntP.push_back( ip );
+ dIJK[ iDirZ ] = 0;
+ bool added = addIntersection(_grid->_edgeIntP.back(), hexes, ijk, dIJK);
+
+ // add ip to hex "below" the plane
+ ijk[ iDirZ ] = iZ-1;
+ if ( !addIntersection( _grid->_edgeIntP.back(), hexes, ijk, dIJK ) &&
+ !added)
+ _grid->_edgeIntP.pop_back();
+ }
+ iZ1 = iZ2;
+ p1 = p2;
+ u1 = u2;
+ zProj1 = zProj2;
+ }
+ // add the 2nd vertex point to a hexahedron
+ if ( iDirZ == 0 )
+ {
+ ip._shapeID = _grid->_shapes.Add( v2 );
+ ip._point = p1;
+ _grid->ComputeUVW( p1, ip._uvw );
+ locateValue( ijk[iDirX], ip._uvw[iDirX], _grid->_coords[iDirX], dIJK[iDirX], tol );
+ locateValue( ijk[iDirY], ip._uvw[iDirY], _grid->_coords[iDirY], dIJK[iDirY], tol );
+ ijk[ iDirZ ] = iZ1;
+ _grid->_edgeIntP.push_back( ip );
+ if ( !addIntersection( _grid->_edgeIntP.back(), hexes, ijk, d000 ))
+ _grid->_edgeIntP.pop_back();
+ ip._shapeID = edgeID;
+ }
+ } // loop on 3 grid directions
+ } // loop on EDGEs
+
+ }
+
+ //================================================================================
+ /*!
+ * \brief Finds intersection of a curve with a plane
+ * \param [in] u1 - parameter of one curve point
+ * \param [in] proj1 - projection of the curve point to the plane normal
+ * \param [in] u2 - parameter of another curve point
+ * \param [in] proj2 - projection of the other curve point to the plane normal
+ * \param [in] proj - projection of a point where the curve intersects the plane
+ * \param [in] curve - the curve
+ * \param [in] axis - the plane normal
+ * \param [in] origin - the plane origin
+ * \return gp_Pnt - the found intersection point
+ */
+ gp_Pnt Hexahedron::findIntPoint( double u1, double proj1,
+ double u2, double proj2,
+ double proj,
+ BRepAdaptor_Curve& curve,
+ const gp_XYZ& axis,
+ const gp_XYZ& origin)
+ {
+ double r = (( proj - proj1 ) / ( proj2 - proj1 ));
+ double u = u1 * ( 1 - r ) + u2 * r;
+ gp_Pnt p = curve.Value( u );
+ double newProj = axis * ( p.XYZ() - origin );
+ if ( Abs( proj - newProj ) > _grid->_tol / 10. )
+ {
+ if ( r > 0.5 )
+ return findIntPoint( u2, proj2, u, newProj, proj, curve, axis, origin );
+ else
+ return findIntPoint( u1, proj2, u, newProj, proj, curve, axis, origin );
+ }
+ return p;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Returns indices of a hexahedron sub-entities holding a point
+ * \param [in] ip - intersection point
+ * \param [out] facets - 0-3 facets holding a point
+ * \param [out] sub - index of a vertex or an edge holding a point
+ * \return int - number of facets holding a point
+ */
+ int Hexahedron::getEntity( const E_IntersectPoint* ip, int* facets, int& sub )
+ {
+ enum { X = 1, Y = 2, Z = 4 }; // == 001, 010, 100
+ int nbFacets = 0;
+ int vertex = 0, egdeMask = 0;
+
+ if ( Abs( _grid->_coords[0][ _i ] - ip->_uvw[0] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_F0yz;
+ egdeMask |= X;
+ }
+ else if ( Abs( _grid->_coords[0][ _i+1 ] - ip->_uvw[0] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_F1yz;
+ vertex |= X;
+ egdeMask |= X;
+ }
+ if ( Abs( _grid->_coords[1][ _j ] - ip->_uvw[1] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_Fx0z;
+ egdeMask |= Y;
+ }
+ else if ( Abs( _grid->_coords[1][ _j+1 ] - ip->_uvw[1] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_Fx1z;
+ vertex |= Y;
+ egdeMask |= Y;
+ }
+ if ( Abs( _grid->_coords[2][ _k ] - ip->_uvw[2] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_Fxy0;
+ egdeMask |= Z;
+ }
+ else if ( Abs( _grid->_coords[2][ _k+1 ] - ip->_uvw[2] ) < _grid->_tol ) {
+ facets[ nbFacets++ ] = SMESH_Block::ID_Fxy1;
+ vertex |= Z;
+ egdeMask |= Z;
+ }
+
+ switch ( nbFacets )
+ {
+ case 0: sub = 0; break;
+ case 1: sub = facets[0]; break;
+ case 2: {
+ const int edge [3][8] = {
+ { SMESH_Block::ID_E00z, SMESH_Block::ID_E10z,
+ SMESH_Block::ID_E01z, SMESH_Block::ID_E11z },
+ { SMESH_Block::ID_E0y0, SMESH_Block::ID_E1y0, 0, 0,
+ SMESH_Block::ID_E0y1, SMESH_Block::ID_E1y1 },
+ { SMESH_Block::ID_Ex00, 0, SMESH_Block::ID_Ex10, 0,
+ SMESH_Block::ID_Ex01, 0, SMESH_Block::ID_Ex11 }
+ };
+ switch ( egdeMask ) {
+ case X | Y: sub = edge[ 0 ][ vertex ]; break;
+ case X | Z: sub = edge[ 1 ][ vertex ]; break;
+ default: sub = edge[ 2 ][ vertex ];
+ }
+ break;
+ }
+ //case 3:
+ default:
+ sub = vertex + SMESH_Block::ID_FirstV;
+ }
+
+ return nbFacets;
+ }
+ //================================================================================
+ /*!
+ * \brief Adds intersection with an EDGE
+ */
+ bool Hexahedron::addIntersection( const E_IntersectPoint& ip,
+ vector< Hexahedron* >& hexes,
+ int ijk[], int dIJK[] )
+ {
+ bool added = false;
+
+ size_t hexIndex[4] = {
+ _grid->CellIndex( ijk[0], ijk[1], ijk[2] ),
+ dIJK[0] ? _grid->CellIndex( ijk[0]+dIJK[0], ijk[1], ijk[2] ) : -1,
+ dIJK[1] ? _grid->CellIndex( ijk[0], ijk[1]+dIJK[1], ijk[2] ) : -1,
+ dIJK[2] ? _grid->CellIndex( ijk[0], ijk[1], ijk[2]+dIJK[2] ) : -1
+ };
+ for ( int i = 0; i < 4; ++i )
+ {
+ if ( /*0 <= hexIndex[i] &&*/ hexIndex[i] < hexes.size() && hexes[ hexIndex[i] ] )
+ {
+ Hexahedron* h = hexes[ hexIndex[i] ];
+ // check if ip is really inside the hex
+#ifdef _DEBUG_
+ if (( _grid->_coords[0][ h->_i ] - _grid->_tol > ip._uvw[0] ) ||
+ ( _grid->_coords[0][ h->_i+1 ] + _grid->_tol < ip._uvw[0] ) ||
+ ( _grid->_coords[1][ h->_j ] - _grid->_tol > ip._uvw[1] ) ||
+ ( _grid->_coords[1][ h->_j+1 ] + _grid->_tol < ip._uvw[1] ) ||
+ ( _grid->_coords[2][ h->_k ] - _grid->_tol > ip._uvw[2] ) ||
+ ( _grid->_coords[2][ h->_k+1 ] + _grid->_tol < ip._uvw[2] ))
+ throw SALOME_Exception("ip outside a hex");
+#endif
+ h->_eIntPoints.push_back( & ip );
+ added = true;
+ }
+ }
+ return added;
+ }
+ //================================================================================
+ /*!
+ * \brief Finds nodes at a path from one node to another via intersections with EDGEs
+ */
+ bool Hexahedron::findChain( _Node* n1,
+ _Node* n2,
+ _Face& quad,
+ vector<_Node*>& chn )
+ {
+ chn.clear();
+ chn.push_back( n1 );
+ for ( size_t iP = 0; iP < quad._eIntNodes.size(); ++iP )
+ if ( !quad._eIntNodes[ iP ]->IsUsedInFace( &quad ) &&
+ n1->IsLinked( quad._eIntNodes[ iP ]->_intPoint ) &&
+ n2->IsLinked( quad._eIntNodes[ iP ]->_intPoint ))
+ {
+ chn.push_back( quad._eIntNodes[ iP ]);
+ chn.push_back( n2 );
+ quad._eIntNodes[ iP ]->_usedInFace = &quad;
+ return true;
+ }
+ bool found;
+ do
+ {
+ found = false;
+ for ( size_t iP = 0; iP < quad._eIntNodes.size(); ++iP )
+ if ( !quad._eIntNodes[ iP ]->IsUsedInFace( &quad ) &&
+ chn.back()->IsLinked( quad._eIntNodes[ iP ]->_intPoint ))
+ {
+ chn.push_back( quad._eIntNodes[ iP ]);
+ found = quad._eIntNodes[ iP ]->_usedInFace = &quad;
+ break;
+ }
+ } while ( found && ! chn.back()->IsLinked( n2->_intPoint ) );
+
+ if ( chn.back() != n2 && chn.back()->IsLinked( n2->_intPoint ))
+ chn.push_back( n2 );
+
+ return chn.size() > 1;
+ }
+ //================================================================================
+ /*!
+ * \brief Try to heal a polygon whose ends are not connected
+ */
+ bool Hexahedron::closePolygon( _Face* polygon, vector<_Node*>& chainNodes ) const
+ {
+ int i = -1, nbLinks = polygon->_links.size();
+ if ( nbLinks < 3 )
+ return false;
+ vector< _OrientedLink > newLinks;
+ // find a node lying on the same FACE as the last one
+ _Node* node = polygon->_links.back().LastNode();
+ int avoidFace = node->IsLinked( polygon->_links.back().FirstNode()->_intPoint );
+ for ( i = nbLinks - 2; i >= 0; --i )
+ if ( node->IsLinked( polygon->_links[i].FirstNode()->_intPoint, avoidFace ))
+ break;
+ if ( i >= 0 )
+ {
+ for ( ; i < nbLinks; ++i )
+ newLinks.push_back( polygon->_links[i] );
+ }
+ else
+ {
+ // find a node lying on the same FACE as the first one
+ node = polygon->_links[0].FirstNode();
+ avoidFace = node->IsLinked( polygon->_links[0].LastNode()->_intPoint );
+ for ( i = 1; i < nbLinks; ++i )
+ if ( node->IsLinked( polygon->_links[i].LastNode()->_intPoint, avoidFace ))
+ break;
+ if ( i < nbLinks )
+ for ( nbLinks = i + 1, i = 0; i < nbLinks; ++i )
+ newLinks.push_back( polygon->_links[i] );
+ }
+ if ( newLinks.size() > 1 )
+ {
+ polygon->_links.swap( newLinks );
+ chainNodes.clear();
+ chainNodes.push_back( polygon->_links.back().LastNode() );
+ chainNodes.push_back( polygon->_links[0].FirstNode() );
+ return true;
+ }
+ return false;
+ }
+ //================================================================================
+ /*!
+ * \brief Checks transition at the 1st node of a link
+ */
+ bool Hexahedron::is1stNodeOut( _Link& link /*int iLink*/ ) const
+ {
+ // new version is for the case: tangent transition at the 1st node
+ bool isOut = false;
+ if ( link._fIntNodes.size() > 1 )
+ {
+ // check transition at the next intersection
+ switch ( link._fIntPoints[1]->_transition ) {
+ case Trans_OUT: return false;
+ case Trans_IN : return true;
+ default: ; // tangent transition
+ }
+ }
+ gp_Pnt p1 = link._nodes[0]->Point();
+ gp_Pnt p2 = link._nodes[1]->Point();
+ gp_Pnt testPnt = 0.8 * p1.XYZ() + 0.2 * p2.XYZ();
+
+ TGeomID faceID = link._fIntPoints[0]->_faceIDs[0];
+ const TopoDS_Face& face = TopoDS::Face( _grid->_shapes( faceID ));
+ TopLoc_Location loc;
+ GeomAPI_ProjectPointOnSurf& proj =
+ _grid->_helper->GetProjector( face, loc, 0.1*_grid->_tol );
+ testPnt.Transform( loc );
+ proj.Perform( testPnt );
+ if ( proj.IsDone() &&
+ proj.NbPoints() > 0 &&
+ proj.LowerDistance() > _grid->_tol )
+ {
+ Quantity_Parameter u,v;
+ proj.LowerDistanceParameters( u,v );
+ gp_Dir normal;
+ if ( GeomLib::NormEstim( BRep_Tool::Surface( face, loc ),
+ gp_Pnt2d( u,v ),
+ 0.1*_grid->_tol,
+ normal ) < 3 )
+ {
+ if ( face.Orientation() == TopAbs_REVERSED )
+ normal.Reverse();
+ gp_Vec v( proj.NearestPoint(), testPnt );
+ return v * normal > 0;
+ }
+ }
+ return isOut;
+ }
//================================================================================
/*!
* \brief Adds computed elements to the mesh
// add elements resulted from hexahedron intersection
//for ( size_t i = 0; i < _volumeDefs.size(); ++i )
{
- vector< const SMDS_MeshNode* >& nodes = _volumeDefs._nodes;
-
+ vector< const SMDS_MeshNode* > nodes( _volumeDefs._nodes.size() );
+ for ( size_t iN = 0; iN < nodes.size(); ++iN )
+ if ( !( nodes[iN] = _volumeDefs._nodes[iN]->Node() ))
+ {
+ if ( const E_IntersectPoint* eip = _volumeDefs._nodes[iN]->EdgeIntPnt() )
+ nodes[iN] = _volumeDefs._nodes[iN]->_intPoint->_node =
+ helper.AddNode( eip->_point.X(),
+ eip->_point.Y(),
+ eip->_point.Z() );
+ else
+ throw SALOME_Exception("Bug: no node at intersection point");
+ }
+
if ( !_volumeDefs._quantities.empty() )
{
helper.AddPolyhedralVolume( nodes, _volumeDefs._quantities );
*/
bool Hexahedron::isInHole() const
{
+ if ( !_vIntNodes.empty() )
+ return false;
+
const int ijk[3] = { _i, _j, _k };
- IntersectionPoint curIntPnt;
+ F_IntersectPoint curIntPnt;
// consider a cell to be in a hole if all links in any direction
// comes OUT of geometry
{
const _Link& link = _hexLinks[ iL + 4*iDir ];
// check transition of the first node of a link
- const IntersectionPoint* firstIntPnt = 0;
+ const F_IntersectPoint* firstIntPnt = 0;
if ( link._nodes[0]->Node() ) // 1st node is a hexa corner
{
curIntPnt._paramOnLine = coords[ ijk[ iDir ]] - coords[0];
const GridLine& line = _grid->_lines[ iDir ][ lineIndex[ iL ]];
- multiset< IntersectionPoint >::const_iterator ip =
+ multiset< F_IntersectPoint >::const_iterator ip =
line._intPoints.upper_bound( curIntPnt );
--ip;
firstIntPnt = &(*ip);
}
- else if ( !link._intNodes.empty() )
+ else if ( !link._fIntPoints.empty() )
{
- firstIntPnt = link._intNodes[0]._intPoint;
+ firstIntPnt = link._fIntPoints[0];
}
if ( firstIntPnt )
{
const _Face& polygon = _polygons[iP];
gp_XYZ area (0,0,0);
- SMESH_TNodeXYZ p1 ( polygon._links[ 0 ].FirstNode()->Node() );
+ gp_XYZ p1 = polygon._links[ 0 ].FirstNode()->Point().XYZ();
for ( size_t iL = 0; iL < polygon._links.size(); ++iL )
{
- SMESH_TNodeXYZ p2 ( polygon._links[ iL ].LastNode()->Node() );
+ gp_XYZ p2 = polygon._links[ iL ].LastNode()->Point().XYZ();
area += p1 ^ p2;
p1 = p2;
}
_polygons[4]._links.size() != 4 ||
_polygons[5]._links.size() != 4 )
return false;
- const SMDS_MeshNode* nodes[8];
+ _Node* nodes[8];
int nbN = 0;
for ( int iL = 0; iL < 4; ++iL )
{
// a base node
- nodes[iL] = _polygons[0]._links[iL].FirstNode()->Node();
+ nodes[iL] = _polygons[0]._links[iL].FirstNode();
++nbN;
// find a top node above the base node
_Link* link = _polygons[0]._links[iL]._link;
- ASSERT( link->_faces.size() > 1 );
+ if ( !link->_faces[0] || !link->_faces[1] )
+ return debugDumpLink( link );
// a quadrangle sharing <link> with _polygons[0]
_Face* quad = link->_faces[ bool( link->_faces[0] == & _polygons[0] )];
for ( int i = 0; i < 4; ++i )
if ( quad->_links[i]._link == link )
{
// 1st node of a link opposite to <link> in <quad>
- nodes[iL+4] = quad->_links[(i+2)%4].FirstNode()->Node();
+ nodes[iL+4] = quad->_links[(i+2)%4].FirstNode();
++nbN;
break;
}
}
if ( nbN == 8 )
- _volumeDefs.set( vector< const SMDS_MeshNode* >( nodes, nodes+8 ));
+ _volumeDefs.set( vector< _Node* >( nodes, nodes+8 ));
return nbN == 8;
}
*/
bool Hexahedron::addTetra()
{
- const SMDS_MeshNode* nodes[4];
- nodes[0] = _polygons[0]._links[0].FirstNode()->Node();
- nodes[1] = _polygons[0]._links[1].FirstNode()->Node();
- nodes[2] = _polygons[0]._links[2].FirstNode()->Node();
+ _Node* nodes[4];
+ nodes[0] = _polygons[0]._links[0].FirstNode();
+ nodes[1] = _polygons[0]._links[1].FirstNode();
+ nodes[2] = _polygons[0]._links[2].FirstNode();
_Link* link = _polygons[0]._links[0]._link;
- ASSERT( link->_faces.size() > 1 );
+ if ( !link->_faces[0] || !link->_faces[1] )
+ return debugDumpLink( link );
// a triangle sharing <link> with _polygons[0]
_Face* tria = link->_faces[ bool( link->_faces[0] == & _polygons[0] )];
for ( int i = 0; i < 3; ++i )
if ( tria->_links[i]._link == link )
{
- nodes[3] = tria->_links[(i+1)%3].LastNode()->Node();
- _volumeDefs.set( vector< const SMDS_MeshNode* >( nodes, nodes+4 ));
+ nodes[3] = tria->_links[(i+1)%3].LastNode();
+ _volumeDefs.set( vector< _Node* >( nodes, nodes+4 ));
return true;
}
if ( iTri < 0 ) return false;
// find nodes
- const SMDS_MeshNode* nodes[6];
+ _Node* nodes[6];
int nbN = 0;
for ( int iL = 0; iL < 3; ++iL )
{
// a base node
- nodes[iL] = _polygons[ iTri ]._links[iL].FirstNode()->Node();
+ nodes[iL] = _polygons[ iTri ]._links[iL].FirstNode();
++nbN;
// find a top node above the base node
_Link* link = _polygons[ iTri ]._links[iL]._link;
- ASSERT( link->_faces.size() > 1 );
+ if ( !link->_faces[0] || !link->_faces[1] )
+ return debugDumpLink( link );
// a quadrangle sharing <link> with a base triangle
_Face* quad = link->_faces[ bool( link->_faces[0] == & _polygons[ iTri ] )];
if ( quad->_links.size() != 4 ) return false;
if ( quad->_links[i]._link == link )
{
// 1st node of a link opposite to <link> in <quad>
- nodes[iL+3] = quad->_links[(i+2)%4].FirstNode()->Node();
+ nodes[iL+3] = quad->_links[(i+2)%4].FirstNode();
++nbN;
break;
}
}
if ( nbN == 6 )
- _volumeDefs.set( vector< const SMDS_MeshNode* >( nodes, nodes+6 ));
+ _volumeDefs.set( vector< _Node* >( nodes, nodes+6 ));
return ( nbN == 6 );
}
if ( iQuad < 0 ) return false;
// find nodes
- const SMDS_MeshNode* nodes[5];
- nodes[0] = _polygons[iQuad]._links[0].FirstNode()->Node();
- nodes[1] = _polygons[iQuad]._links[1].FirstNode()->Node();
- nodes[2] = _polygons[iQuad]._links[2].FirstNode()->Node();
- nodes[3] = _polygons[iQuad]._links[3].FirstNode()->Node();
+ _Node* nodes[5];
+ nodes[0] = _polygons[iQuad]._links[0].FirstNode();
+ nodes[1] = _polygons[iQuad]._links[1].FirstNode();
+ nodes[2] = _polygons[iQuad]._links[2].FirstNode();
+ nodes[3] = _polygons[iQuad]._links[3].FirstNode();
_Link* link = _polygons[iQuad]._links[0]._link;
- ASSERT( link->_faces.size() > 1 );
+ if ( !link->_faces[0] || !link->_faces[1] )
+ return debugDumpLink( link );
// a triangle sharing <link> with a base quadrangle
_Face* tria = link->_faces[ bool( link->_faces[0] == & _polygons[ iQuad ] )];
for ( int i = 0; i < 3; ++i )
if ( tria->_links[i]._link == link )
{
- nodes[4] = tria->_links[(i+1)%3].LastNode()->Node();
- _volumeDefs.set( vector< const SMDS_MeshNode* >( nodes, nodes+5 ));
+ nodes[4] = tria->_links[(i+1)%3].LastNode();
+ _volumeDefs.set( vector< _Node* >( nodes, nodes+5 ));
return true;
}
return false;
}
+ //================================================================================
+ /*!
+ * \brief Dump a link and return \c false
+ */
+ bool Hexahedron::debugDumpLink( Hexahedron::_Link* link )
+ {
+#ifdef _DEBUG_
+ gp_Pnt p1 = link->_nodes[0]->Point(), p2 = link->_nodes[1]->Point();
+ cout << "BUG: not shared link. IKJ = ( "<< _i << " " << _j << " " << _k << " )" << endl
+ << "n1 (" << p1.X() << ", "<< p1.Y() << ", "<< p1.Z() << " )" << endl
+ << "n2 (" << p2.X() << ", "<< p2.Y() << ", "<< p2.Z() << " )" << endl;
+#endif
+ return false;
+ }
+
+ //================================================================================
+ /*!
+ * \brief computes exact bounding box with axes parallel to given ones
+ */
+ //================================================================================
+
+ void getExactBndBox( const vector< TopoDS_Shape >& faceVec,
+ const double* axesDirs,
+ Bnd_Box& shapeBox )
+ {
+ BRep_Builder b;
+ TopoDS_Compound allFacesComp;
+ b.MakeCompound( allFacesComp );
+ for ( size_t iF = 0; iF < faceVec.size(); ++iF )
+ b.Add( allFacesComp, faceVec[ iF ] );
+
+ double sP[6]; // aXmin, aYmin, aZmin, aXmax, aYmax, aZmax
+ shapeBox.Get(sP[0],sP[1],sP[2],sP[3],sP[4],sP[5]);
+ double farDist = 0;
+ for ( int i = 0; i < 6; ++i )
+ farDist = Max( farDist, 10 * sP[i] );
+
+ gp_XYZ axis[3] = { gp_XYZ( axesDirs[0], axesDirs[1], axesDirs[2] ),
+ gp_XYZ( axesDirs[3], axesDirs[4], axesDirs[5] ),
+ gp_XYZ( axesDirs[6], axesDirs[7], axesDirs[8] ) };
+ axis[0].Normalize();
+ axis[1].Normalize();
+ axis[2].Normalize();
+
+ gp_Mat basis( axis[0], axis[1], axis[2] );
+ gp_Mat bi = basis.Inverted();
+
+ gp_Pnt pMin, pMax;
+ for ( int iDir = 0; iDir < 3; ++iDir )
+ {
+ gp_XYZ axis0 = axis[ iDir ];
+ gp_XYZ axis1 = axis[ ( iDir + 1 ) % 3 ];
+ gp_XYZ axis2 = axis[ ( iDir + 2 ) % 3 ];
+ for ( int isMax = 0; isMax < 2; ++isMax )
+ {
+ double shift = isMax ? farDist : -farDist;
+ gp_XYZ orig = shift * axis0;
+ gp_XYZ norm = axis1 ^ axis2;
+ gp_Pln pln( orig, norm );
+ norm = pln.Axis().Direction().XYZ();
+ BRepBuilderAPI_MakeFace plane( pln, -farDist, farDist, -farDist, farDist );
+
+ gp_Pnt& pAxis = isMax ? pMax : pMin;
+ gp_Pnt pPlane, pFaces;
+ double dist = GEOMUtils::GetMinDistance( plane, allFacesComp, pPlane, pFaces );
+ if ( dist < 0 )
+ {
+ Bnd_B3d bb;
+ gp_XYZ corner;
+ for ( int i = 0; i < 2; ++i ) {
+ corner.SetCoord( 1, sP[ i*3 ]);
+ for ( int j = 0; j < 2; ++j ) {
+ corner.SetCoord( 2, sP[ i*3 + 1 ]);
+ for ( int k = 0; k < 2; ++k )
+ {
+ corner.SetCoord( 3, sP[ i*3 + 2 ]);
+ corner *= bi;
+ bb.Add( corner );
+ }
+ }
+ }
+ corner = isMax ? bb.CornerMax() : bb.CornerMin();
+ pAxis.SetCoord( iDir+1, corner.Coord( iDir+1 ));
+ }
+ else
+ {
+ gp_XYZ pf = pFaces.XYZ() * bi;
+ pAxis.SetCoord( iDir+1, pf.Coord( iDir+1 ) );
+ }
+ }
+ } // loop on 3 axes
+
+ shapeBox.SetVoid();
+ shapeBox.Add( pMin );
+ shapeBox.Add( pMax );
+
+ return;
+ }
} // namespace
_computeCanceled = false;
+ SMESH_MesherHelper helper( theMesh );
+
try
{
Grid grid;
+ grid._helper = &helper;
- TopTools_MapOfShape faceMap;
- for ( TopExp_Explorer fExp( theShape, TopAbs_FACE ); fExp.More(); fExp.Next() )
- if ( !faceMap.Add( fExp.Current() ))
- faceMap.Remove( fExp.Current() ); // remove a face shared by two solids
-
+ vector< TopoDS_Shape > faceVec;
+ {
+ TopTools_MapOfShape faceMap;
+ TopExp_Explorer fExp;
+ for ( fExp.Init( theShape, TopAbs_FACE ); fExp.More(); fExp.Next() )
+ if ( !faceMap.Add( fExp.Current() ))
+ faceMap.Remove( fExp.Current() ); // remove a face shared by two solids
+
+ for ( fExp.ReInit(); fExp.More(); fExp.Next() )
+ if ( faceMap.Contains( fExp.Current() ))
+ faceVec.push_back( fExp.Current() );
+ }
+ vector<FaceGridIntersector> facesItersectors( faceVec.size() );
+ map< TGeomID, vector< TGeomID > > edge2faceIDsMap;
+ TopExp_Explorer eExp;
Bnd_Box shapeBox;
- vector<FaceGridIntersector> facesItersectors( faceMap.Extent() );
- TopTools_MapIteratorOfMapOfShape faceMppIt( faceMap );
- for ( int i = 0; faceMppIt.More(); faceMppIt.Next(), ++i )
+ for ( int i = 0; i < faceVec.size(); ++i )
{
- facesItersectors[i]._face = TopoDS::Face( faceMppIt.Key() );
- facesItersectors[i]._grid = &grid;
+ facesItersectors[i]._face = TopoDS::Face ( faceVec[i] );
+ facesItersectors[i]._faceID = grid._shapes.Add( faceVec[i] );
+ facesItersectors[i]._grid = &grid;
shapeBox.Add( facesItersectors[i].GetFaceBndBox() );
+
+ if ( _hyp->GetToAddEdges() )
+ {
+ helper.SetSubShape( faceVec[i] );
+ for ( eExp.Init( faceVec[i], TopAbs_EDGE ); eExp.More(); eExp.Next() )
+ {
+ const TopoDS_Edge& edge = TopoDS::Edge( eExp.Current() );
+ if ( !SMESH_Algo::isDegenerated( edge ) &&
+ !helper.IsRealSeam( edge ))
+ edge2faceIDsMap[ grid._shapes.Add( edge )].push_back( facesItersectors[i]._faceID );
+ }
+ }
}
+ getExactBndBox( faceVec, _hyp->GetAxisDirs(), shapeBox );
+
vector<double> xCoords, yCoords, zCoords;
_hyp->GetCoordinates( xCoords, yCoords, zCoords, shapeBox );
- grid.SetCoordinates( xCoords, yCoords, zCoords, theShape );
-
- // check if the grid encloses the shape
- if ( !_hyp->IsGridBySpacing(0) ||
- !_hyp->IsGridBySpacing(1) ||
- !_hyp->IsGridBySpacing(2) )
- {
- Bnd_Box gridBox;
- gridBox.Add( gp_Pnt( xCoords[0], yCoords[0], zCoords[0] ));
- gridBox.Add( gp_Pnt( xCoords.back(), yCoords.back(), zCoords.back() ));
- double x0,y0,z0, x1,y1,z1;
- shapeBox.Get(x0,y0,z0, x1,y1,z1);
- if ( gridBox.IsOut( gp_Pnt( x0,y0,z0 )) ||
- gridBox.IsOut( gp_Pnt( x1,y1,z1 )))
- for ( size_t i = 0; i < facesItersectors.size(); ++i )
- {
- if ( !facesItersectors[i].IsInGrid( gridBox ))
- return error("The grid doesn't enclose the geometry");
-#ifdef ELLIPSOLID_WORKAROUND
- delete facesItersectors[i]._surfaceInt, facesItersectors[i]._surfaceInt = 0;
-#endif
- }
- }
+ grid.SetCoordinates( xCoords, yCoords, zCoords, _hyp->GetAxisDirs(), shapeBox );
+
if ( _computeCanceled ) return false;
#ifdef WITH_TBB
for ( size_t i = 0; i < facesItersectors.size(); ++i )
facesItersectors[i].StoreIntersections();
- SMESH_MesherHelper helper( theMesh );
TopExp_Explorer solidExp (theShape, TopAbs_SOLID);
helper.SetSubShape( solidExp.Current() );
helper.SetElementsOnShape( true );
// create volume elements
Hexahedron hex( _hyp->GetSizeThreshold(), &grid );
- int nbAdded = hex.MakeElements( helper );
+ int nbAdded = hex.MakeElements( helper, edge2faceIDsMap );
SMESHDS_Mesh* meshDS = theMesh.GetMeshDS();
if ( nbAdded > 0 )
{
- // make all SOLIDS computed
+ // make all SOLIDs computed
if ( SMESHDS_SubMesh* sm1 = meshDS->MeshElements( solidExp.Current()) )
{
SMDS_ElemIteratorPtr volIt = sm1->GetElements();
// remove free nodes
if ( SMESHDS_SubMesh * smDS = meshDS->MeshElements( helper.GetSubShapeID() ))
{
- // intersection nodes
+ TIDSortedNodeSet nodesToRemove;
+ // get intersection nodes
for ( int iDir = 0; iDir < 3; ++iDir )
{
vector< GridLine >& lines = grid._lines[ iDir ];
for ( size_t i = 0; i < lines.size(); ++i )
{
- multiset< IntersectionPoint >::iterator ip = lines[i]._intPoints.begin();
+ multiset< F_IntersectPoint >::iterator ip = lines[i]._intPoints.begin();
for ( ; ip != lines[i]._intPoints.end(); ++ip )
if ( ip->_node && ip->_node->NbInverseElements() == 0 )
- meshDS->RemoveFreeNode( ip->_node, smDS, /*fromGroups=*/false );
+ nodesToRemove.insert( nodesToRemove.end(), ip->_node );
}
}
- // grid nodes
+ // get grid nodes
for ( size_t i = 0; i < grid._nodes.size(); ++i )
- if ( !grid._isBndNode[i] ) // nodes on boundary are already removed
- if ( grid._nodes[i] && grid._nodes[i]->NbInverseElements() == 0 )
- meshDS->RemoveFreeNode( grid._nodes[i], smDS, /*fromGroups=*/false );
+ if ( grid._nodes[i] && grid._nodes[i]->NbInverseElements() == 0 )
+ nodesToRemove.insert( nodesToRemove.end(), grid._nodes[i] );
+
+ // do remove
+ TIDSortedNodeSet::iterator n = nodesToRemove.begin();
+ for ( ; n != nodesToRemove.end(); ++n )
+ meshDS->RemoveFreeNode( *n, smDS, /*fromGroups=*/false );
}
return nbAdded;
SMESH_subMesh* sm = smIt->next();
sm->SetIsAlwaysComputed( isComputed );
}
+ subMeshOfSolid->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
}
// --------------------------------------------------------------------------------
