-// Copyright (C) 2005 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
-// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+// Copyright (C) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
//
-// 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.
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
-// 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.
+// 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.
//
-// 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
+// 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.
//
-// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+// 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: SMESH_MesherHelper.cxx
// Created: 15.02.06 15:22:41
// Author: Sergey KUUL
-// Copyright: Open CASCADE 2006
-
-
+//
#include "SMESH_MesherHelper.hxx"
#include "SMDS_FacePosition.hxx"
#include "SMDS_EdgePosition.hxx"
-#include "SMESH_MeshEditor.hxx"
+#include "SMDS_VolumeTool.hxx"
+#include "SMESH_subMesh.hxx"
#include <BRepAdaptor_Surface.hxx>
#include <BRepTools.hxx>
+#include <BRepTools_WireExplorer.hxx>
#include <BRep_Tool.hxx>
#include <Geom2d_Curve.hxx>
+#include <GeomAPI_ProjectPointOnCurve.hxx>
+#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Surface.hxx>
+#include <ShapeAnalysis.hxx>
+#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
+#include <TopTools_MapIteratorOfMapOfShape.hxx>
#include <TopTools_MapOfShape.hxx>
+#include <TopoDS.hxx>
+#include <gp_Ax3.hxx>
#include <gp_Pnt2d.hxx>
-#include <ShapeAnalysis.hxx>
+#include <gp_Trsf.hxx>
+
+#include <Standard_Failure.hxx>
+#include <Standard_ErrorHandler.hxx>
+
+#include <utilities.h>
+
+#include <limits>
+
+using namespace std;
+
+#define RETURN_BAD_RESULT(msg) { MESSAGE(msg); return false; }
+
+namespace {
+
+ gp_XYZ XYZ(const SMDS_MeshNode* n) { return gp_XYZ(n->X(), n->Y(), n->Z()); }
+
+ enum { U_periodic = 1, V_periodic = 2 };
+}
+
+//================================================================================
+/*!
+ * \brief Constructor
+ */
+//================================================================================
+
+SMESH_MesherHelper::SMESH_MesherHelper(SMESH_Mesh& theMesh)
+ : myParIndex(0), myMesh(&theMesh), myShapeID(0), myCreateQuadratic(false)
+{
+ myPar1[0] = myPar2[0] = myPar1[1] = myPar2[1] = 0;
+ mySetElemOnShape = ( ! myMesh->HasShapeToMesh() );
+}
//=======================================================================
-//function : CheckShape
+//function : ~SMESH_MesherHelper
//purpose :
//=======================================================================
+SMESH_MesherHelper::~SMESH_MesherHelper()
+{
+ TID2Projector::iterator i_proj = myFace2Projector.begin();
+ for ( ; i_proj != myFace2Projector.end(); ++i_proj )
+ delete i_proj->second;
+}
+
+//=======================================================================
+//function : IsQuadraticSubMesh
+//purpose : Check submesh for given shape: if all elements on this shape
+// are quadratic, quadratic elements will be created.
+// Also fill myTLinkNodeMap
+//=======================================================================
+
bool SMESH_MesherHelper::IsQuadraticSubMesh(const TopoDS_Shape& aSh)
{
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh* meshDS = GetMeshDS();
// we can create quadratic elements only if all elements
// created on subshapes of given shape are quadratic
- // also we have to fill myNLinkNodeMap
+ // also we have to fill myTLinkNodeMap
myCreateQuadratic = true;
mySeamShapeIds.clear();
+ myDegenShapeIds.clear();
TopAbs_ShapeEnum subType( aSh.ShapeType()==TopAbs_FACE ? TopAbs_EDGE : TopAbs_FACE );
SMDSAbs_ElementType elemType( subType==TopAbs_FACE ? SMDSAbs_Face : SMDSAbs_Edge );
+ int nbOldLinks = myTLinkNodeMap.size();
+
TopExp_Explorer exp( aSh, subType );
for (; exp.More() && myCreateQuadratic; exp.Next()) {
if ( SMESHDS_SubMesh * subMesh = meshDS->MeshElements( exp.Current() )) {
break;
}
else {
- // fill NLinkNodeMap
+ // fill TLinkNodeMap
switch ( e->NbNodes() ) {
case 3:
- AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(2)); break;
+ AddTLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(2)); break;
case 6:
- AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(3));
- AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(4));
- AddNLinkNode(e->GetNode(2),e->GetNode(0),e->GetNode(5)); break;
+ AddTLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(3));
+ AddTLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(4));
+ AddTLinkNode(e->GetNode(2),e->GetNode(0),e->GetNode(5)); break;
case 8:
- AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(4));
- AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(5));
- AddNLinkNode(e->GetNode(2),e->GetNode(3),e->GetNode(6));
- AddNLinkNode(e->GetNode(3),e->GetNode(0),e->GetNode(7));
+ AddTLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(4));
+ AddTLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(5));
+ AddTLinkNode(e->GetNode(2),e->GetNode(3),e->GetNode(6));
+ AddTLinkNode(e->GetNode(3),e->GetNode(0),e->GetNode(7));
break;
default:
myCreateQuadratic = false;
}
}
+ if ( nbOldLinks == myTLinkNodeMap.size() )
+ myCreateQuadratic = false;
+
if(!myCreateQuadratic) {
- myNLinkNodeMap.clear();
- }
- else {
- SetSubShape( aSh );
+ myTLinkNodeMap.clear();
}
+ SetSubShape( aSh );
+
return myCreateQuadratic;
}
-//================================================================================
-/*!
- * \brief Set geomerty to make elements on
- * \param aSh - geomertic shape
- */
-//================================================================================
+//=======================================================================
+//function : SetSubShape
+//purpose : Set geomerty to make elements on
+//=======================================================================
void SMESH_MesherHelper::SetSubShape(const int aShID)
{
if ( aShID == myShapeID )
return;
if ( aShID > 1 )
- SetSubShape( GetMesh()->GetMeshDS()->IndexToShape( aShID ));
+ SetSubShape( GetMeshDS()->IndexToShape( aShID ));
else
SetSubShape( TopoDS_Shape() );
}
-//================================================================================
-/*!
- * \brief Set geomerty to make elements on
- * \param aSh - geomertic shape
- */
-//================================================================================
+//=======================================================================
+//function : SetSubShape
+//purpose : Set geomerty to create elements on
+//=======================================================================
void SMESH_MesherHelper::SetSubShape(const TopoDS_Shape& aSh)
{
- if ( !myShape.IsNull() && !aSh.IsNull() && myShape.IsSame( aSh ))
+ if ( myShape.IsSame( aSh ))
return;
myShape = aSh;
mySeamShapeIds.clear();
+ myDegenShapeIds.clear();
if ( myShape.IsNull() ) {
- myShapeID = -1;
+ myShapeID = 0;
return;
}
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh* meshDS = GetMeshDS();
myShapeID = meshDS->ShapeToIndex(aSh);
+ myParIndex = 0;
// treatment of periodic faces
- if ( aSh.ShapeType() == TopAbs_FACE )
+ for ( TopExp_Explorer eF( aSh, TopAbs_FACE ); eF.More(); eF.Next() )
{
- const TopoDS_Face& face = TopoDS::Face( aSh );
+ const TopoDS_Face& face = TopoDS::Face( eF.Current() );
BRepAdaptor_Surface surface( face );
if ( surface.IsUPeriodic() || surface.IsVPeriodic() )
{
- // look for a seam edge
- for ( TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next()) {
+ for (TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next())
+ {
+ // look for a seam edge
const TopoDS_Edge& edge = TopoDS::Edge( exp.Current() );
if ( BRep_Tool::IsClosed( edge, face )) {
// initialize myPar1, myPar2 and myParIndex
- if ( mySeamShapeIds.empty() ) {
- gp_Pnt2d uv1, uv2;
- BRep_Tool::UVPoints( edge, face, uv1, uv2 );
- if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) ))
- {
- myParIndex = 1; // U periodic
- myPar1 = surface.FirstUParameter();
- myPar2 = surface.LastUParameter();
- }
- else {
- myParIndex = 2; // V periodic
- myPar1 = surface.FirstVParameter();
- myPar2 = surface.LastVParameter();
- }
+ gp_Pnt2d uv1, uv2;
+ BRep_Tool::UVPoints( edge, face, uv1, uv2 );
+ if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) ))
+ {
+ myParIndex |= U_periodic;
+ myPar1[0] = surface.FirstUParameter();
+ myPar2[0] = surface.LastUParameter();
+ }
+ else {
+ myParIndex |= V_periodic;
+ myPar1[1] = surface.FirstVParameter();
+ myPar2[1] = surface.LastVParameter();
+ }
+ // store seam shape indices, negative if shape encounters twice
+ int edgeID = meshDS->ShapeToIndex( edge );
+ mySeamShapeIds.insert( IsSeamShape( edgeID ) ? -edgeID : edgeID );
+ for ( TopExp_Explorer v( edge, TopAbs_VERTEX ); v.More(); v.Next() ) {
+ int vertexID = meshDS->ShapeToIndex( v.Current() );
+ mySeamShapeIds.insert( IsSeamShape( vertexID ) ? -vertexID : vertexID );
}
- // store shapes indices
- mySeamShapeIds.insert( meshDS->ShapeToIndex( exp.Current() ));
- for ( TopExp_Explorer v( exp.Current(), TopAbs_VERTEX ); v.More(); v.Next() )
- mySeamShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
+ }
+
+ // look for a degenerated edge
+ if ( BRep_Tool::Degenerated( edge )) {
+ myDegenShapeIds.insert( meshDS->ShapeToIndex( edge ));
+ for ( TopExp_Explorer v( edge, TopAbs_VERTEX ); v.More(); v.Next() )
+ myDegenShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
}
}
}
}
}
-//================================================================================
- /*!
- * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
- * \param F - the face
- * \retval bool - return true if the face is periodic
- */
-//================================================================================
+//=======================================================================
+//function : GetNodeUVneedInFaceNode
+//purpose : Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
+// Return true if the face is periodic.
+// If F is Null, answer about subshape set through IsQuadraticSubMesh() or
+// * SetSubShape()
+//=======================================================================
bool SMESH_MesherHelper::GetNodeUVneedInFaceNode(const TopoDS_Face& F) const
{
if ( !F.IsNull() && !myShape.IsNull() && myShape.IsSame( F ))
return !mySeamShapeIds.empty();
- Handle(Geom_Surface) aSurface = BRep_Tool::Surface( F );
+ TopLoc_Location loc;
+ Handle(Geom_Surface) aSurface = BRep_Tool::Surface( F,loc );
if ( !aSurface.IsNull() )
return ( aSurface->IsUPeriodic() || aSurface->IsVPeriodic() );
//=======================================================================
bool SMESH_MesherHelper::IsMedium(const SMDS_MeshNode* node,
- const SMDSAbs_ElementType typeToCheck)
+ const SMDSAbs_ElementType typeToCheck)
{
return SMESH_MeshEditor::IsMedium( node, typeToCheck );
}
//=======================================================================
-//function : AddNLinkNode
-//purpose :
+//function : GetSubShapeByNode
+//purpose : Return support shape of a node
//=======================================================================
-/*!
- * Auxilary function for filling myNLinkNodeMap
- */
-void SMESH_MesherHelper::AddNLinkNode(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const SMDS_MeshNode* n12)
+
+TopoDS_Shape SMESH_MesherHelper::GetSubShapeByNode(const SMDS_MeshNode* node,
+ SMESHDS_Mesh* meshDS)
+{
+ int shapeID = node->GetPosition()->GetShapeId();
+ if ( 0 < shapeID && shapeID <= meshDS->MaxShapeIndex() )
+ return meshDS->IndexToShape( shapeID );
+ else
+ return TopoDS_Shape();
+}
+
+
+//=======================================================================
+//function : AddTLinkNode
+//purpose : add a link in my data structure
+//=======================================================================
+
+void SMESH_MesherHelper::AddTLinkNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n12)
{
- NLink link( n1, n2 );
- if ( n1 > n2 ) link = NLink( n2, n1 );
// add new record to map
- myNLinkNodeMap.insert( make_pair(link,n12));
+ SMESH_TLink link( n1, n2 );
+ myTLinkNodeMap.insert( make_pair(link,n12));
}
//=======================================================================
-/*!
- * \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
- * \param uv1 - UV on the seam
- * \param uv2 - UV within a face
- * \retval gp_Pnt2d - selected UV
- */
+//function : GetUVOnSeam
+//purpose : Select UV on either of 2 pcurves of a seam edge, closest to the given UV
//=======================================================================
gp_Pnt2d SMESH_MesherHelper::GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const
{
- double p1 = uv1.Coord( myParIndex );
- double p2 = uv2.Coord( myParIndex );
- double p3 = ( Abs( p1 - myPar1 ) < Abs( p1 - myPar2 )) ? myPar2 : myPar1;
- if ( Abs( p2 - p1 ) > Abs( p2 - p3 ))
- p1 = p3;
gp_Pnt2d result = uv1;
- result.SetCoord( myParIndex, p1 );
+ for ( int i = U_periodic; i <= V_periodic ; ++i )
+ {
+ if ( myParIndex & i )
+ {
+ double p1 = uv1.Coord( i );
+ double dp1 = Abs( p1-myPar1[i-1]), dp2 = Abs( p1-myPar2[i-1]);
+ if ( myParIndex == i ||
+ dp1 < ( myPar2[i-1] - myPar2[i-1] ) / 100. ||
+ dp2 < ( myPar2[i-1] - myPar2[i-1] ) / 100. )
+ {
+ double p2 = uv2.Coord( i );
+ double p1Alt = ( dp1 < dp2 ) ? myPar2[i-1] : myPar1[i-1];
+ if ( Abs( p2 - p1 ) > Abs( p2 - p1Alt ))
+ result.SetCoord( i, p1Alt );
+ }
+ }
+ }
return result;
}
//=======================================================================
-/*!
- * \brief Return node UV on face
- * \param F - the face
- * \param n - the node
- * \param n2 - a node of element being created located inside a face
- * \retval gp_XY - resulting UV
- *
- * Auxilary function called form GetMediumNode()
- */
+//function : GetNodeUV
+//purpose : Return node UV on face
//=======================================================================
gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F,
const SMDS_MeshNode* n,
- const SMDS_MeshNode* n2)
+ const SMDS_MeshNode* n2,
+ bool* check) const
{
- gp_Pnt2d uv;
+ gp_Pnt2d uv( Precision::Infinite(), Precision::Infinite() );
const SMDS_PositionPtr Pos = n->GetPosition();
- if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE) {
+ bool uvOK = false;
+ if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE)
+ {
// node has position on face
const SMDS_FacePosition* fpos =
static_cast<const SMDS_FacePosition*>(n->GetPosition().get());
- uv = gp_Pnt2d(fpos->GetUParameter(),fpos->GetVParameter());
+ uv.SetCoord(fpos->GetUParameter(),fpos->GetVParameter());
+ if ( check )
+ uvOK = CheckNodeUV( F, n, uv.ChangeCoord(), 10*MaxTolerance( F ));
}
- else if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE) {
+ else if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE)
+ {
// node has position on edge => it is needed to find
// corresponding edge from face, get pcurve for this
- // edge and recieve value from this pcurve
+ // edge and retrieve value from this pcurve
const SMDS_EdgePosition* epos =
static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
int edgeID = Pos->GetShapeId();
- TopoDS_Edge E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
- double f, l;
- TopLoc_Location loc;
+ TopoDS_Edge E = TopoDS::Edge(GetMeshDS()->IndexToShape(edgeID));
+ double f, l, u = epos->GetUParameter();
Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
- uv = C2d->Value( epos->GetUParameter() );
+ bool validU = ( f < u && u < l );
+ if ( validU )
+ uv = C2d->Value( u );
+ else
+ uv.SetCoord(0.,0.);
+ if ( check || !validU )
+ uvOK = CheckNodeUV( F, n, uv.ChangeCoord(), 10*MaxTolerance( F ),/*force=*/ !validU );
+
// for a node on a seam edge select one of UVs on 2 pcurves
- if ( n2 && mySeamShapeIds.find( edgeID ) != mySeamShapeIds.end() )
- uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
+ if ( n2 && IsSeamShape( edgeID ) )
+ {
+ uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0, check ));
+ }
+ else
+ { // adjust uv to period
+ TopLoc_Location loc;
+ Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc);
+ Standard_Boolean isUPeriodic = S->IsUPeriodic();
+ Standard_Boolean isVPeriodic = S->IsVPeriodic();
+ if ( isUPeriodic || isVPeriodic ) {
+ Standard_Real UF,UL,VF,VL;
+ S->Bounds(UF,UL,VF,VL);
+ if(isUPeriodic)
+ uv.SetX( uv.X() + ShapeAnalysis::AdjustToPeriod(uv.X(),UF,UL));
+ if(isVPeriodic)
+ uv.SetY( uv.Y() + ShapeAnalysis::AdjustToPeriod(uv.Y(),VF,VL));
+ }
+ }
}
- else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX) {
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
- int vertexID = n->GetPosition()->GetShapeId();
- const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
- uv = BRep_Tool::Parameters( V, F );
- if ( n2 && mySeamShapeIds.find( vertexID ) != mySeamShapeIds.end() )
- uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
+ else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX)
+ {
+ if ( int vertexID = n->GetPosition()->GetShapeId() ) {
+ const TopoDS_Vertex& V = TopoDS::Vertex(GetMeshDS()->IndexToShape(vertexID));
+ try {
+ uv = BRep_Tool::Parameters( V, F );
+ uvOK = true;
+ }
+ catch (Standard_Failure& exc) {
+ }
+ if ( !uvOK ) {
+ for ( TopExp_Explorer vert(F,TopAbs_VERTEX); !uvOK && vert.More(); vert.Next() )
+ uvOK = ( V == vert.Current() );
+ if ( !uvOK ) {
+#ifdef _DEBUG_
+ MESSAGE ( "SMESH_MesherHelper::GetNodeUV(); Vertex " << vertexID
+ << " not in face " << GetMeshDS()->ShapeToIndex( F ) );
+#endif
+ // get UV of a vertex closest to the node
+ double dist = 1e100;
+ gp_Pnt pn = XYZ( n );
+ for ( TopExp_Explorer vert(F,TopAbs_VERTEX); !uvOK && vert.More(); vert.Next() ) {
+ TopoDS_Vertex curV = TopoDS::Vertex( vert.Current() );
+ gp_Pnt p = BRep_Tool::Pnt( curV );
+ double curDist = p.SquareDistance( pn );
+ if ( curDist < dist ) {
+ dist = curDist;
+ uv = BRep_Tool::Parameters( curV, F );
+ uvOK = ( dist < DBL_MIN );
+ }
+ }
+ }
+ else {
+ uvOK = false;
+ TopTools_ListIteratorOfListOfShape it( myMesh->GetAncestors( V ));
+ for ( ; it.More(); it.Next() ) {
+ if ( it.Value().ShapeType() == TopAbs_EDGE ) {
+ const TopoDS_Edge & edge = TopoDS::Edge( it.Value() );
+ double f,l;
+ Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(edge, F, f, l);
+ if ( !C2d.IsNull() ) {
+ double u = ( V == TopExp::FirstVertex( edge ) ) ? f : l;
+ uv = C2d->Value( u );
+ uvOK = true;
+ break;
+ }
+ }
+ }
+ }
+ }
+ if ( n2 && IsSeamShape( vertexID ) )
+ uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
+ }
}
- return uv.XY();
-}
-//=======================================================================
-/*!
- * \brief Return node U on edge
- * \param E - the Edge
- * \param n - the node
- * \retval double - resulting U
- *
- * Auxilary function called form GetMediumNode()
- */
-//=======================================================================
+ if ( check )
+ *check = uvOK;
-double SMESH_MesherHelper::GetNodeU(const TopoDS_Edge& E,
- const SMDS_MeshNode* n)
-{
- double param = 0;
- const SMDS_PositionPtr Pos = n->GetPosition();
- if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE) {
- const SMDS_EdgePosition* epos =
- static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
- param = epos->GetUParameter();
- }
- else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX) {
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
- int vertexID = n->GetPosition()->GetShapeId();
- const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
- param = BRep_Tool::Parameter( V, E );
- }
- return param;
+ return uv.XY();
}
//=======================================================================
-//function : GetMediumNode
-//purpose :
+//function : CheckNodeUV
+//purpose : Check and fix node UV on a face
//=======================================================================
-/*!
- * Special function for search or creation medium node
- */
-const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- bool force3d)
-{
- TopAbs_ShapeEnum shapeType = myShape.IsNull() ? TopAbs_SHAPE : myShape.ShapeType();
- NLink link(( n1 < n2 ? n1 : n2 ), ( n1 < n2 ? n2 : n1 ));
- ItNLinkNode itLN = myNLinkNodeMap.find( link );
- if ( itLN != myNLinkNodeMap.end() ) {
- return (*itLN).second;
- }
- else {
- // create medium node
- SMDS_MeshNode* n12;
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
- int faceID = -1, edgeID = -1;
- const SMDS_PositionPtr Pos1 = n1->GetPosition();
- const SMDS_PositionPtr Pos2 = n2->GetPosition();
-
- if( myShape.IsNull() )
+bool SMESH_MesherHelper::CheckNodeUV(const TopoDS_Face& F,
+ const SMDS_MeshNode* n,
+ gp_XY& uv,
+ const double tol,
+ const bool force) const
+{
+ if ( force || !myOkNodePosShapes.count( n->GetPosition()->GetShapeId() ))
+ {
+ // check that uv is correct
+ TopLoc_Location loc;
+ Handle(Geom_Surface) surface = BRep_Tool::Surface( F,loc );
+ gp_Pnt nodePnt = XYZ( n );
+ if ( !loc.IsIdentity() ) nodePnt.Transform( loc.Transformation().Inverted() );
+ if ( Precision::IsInfinite( uv.X() ) ||
+ Precision::IsInfinite( uv.Y() ) ||
+ nodePnt.Distance( surface->Value( uv.X(), uv.Y() )) > tol )
{
- if( Pos1->GetTypeOfPosition()==SMDS_TOP_FACE ) {
- faceID = Pos1->GetShapeId();
- }
- else if( Pos2->GetTypeOfPosition()==SMDS_TOP_FACE ) {
- faceID = Pos2->GetShapeId();
+ // uv incorrect, project the node to surface
+ GeomAPI_ProjectPointOnSurf& projector = GetProjector( F, loc, tol );
+ projector.Perform( nodePnt );
+ if ( !projector.IsDone() || projector.NbPoints() < 1 )
+ {
+ MESSAGE( "SMESH_MesherHelper::CheckNodeUV() failed to project" );
+ return false;
}
-
- if( Pos1->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
- edgeID = Pos1->GetShapeId();
- }
- if( Pos2->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
- edgeID = Pos2->GetShapeId();
+ Quantity_Parameter U,V;
+ projector.LowerDistanceParameters(U,V);
+ uv.SetCoord( U,V );
+ if ( nodePnt.Distance( surface->Value( U, V )) > tol )
+ {
+ MESSAGE( "SMESH_MesherHelper::CheckNodeUV(), invalid projection" );
+ return false;
}
}
-
- if(!force3d) {
- // we try to create medium node using UV parameters of
- // nodes, else - medium between corresponding 3d points
- if(faceID>-1 || shapeType == TopAbs_FACE) {
- // obtaining a face and 2d points for nodes
- TopoDS_Face F;
- if( myShape.IsNull() )
- F = TopoDS::Face(meshDS->IndexToShape(faceID));
- else {
- F = TopoDS::Face(myShape);
- faceID = myShapeID;
- }
-
- gp_XY p1 = GetNodeUV(F,n1,n2);
- gp_XY p2 = GetNodeUV(F,n2,n1);
-
- //checking if surface is periodic
- Handle(Geom_Surface) S = BRep_Tool::Surface(F);
- Standard_Real UF,UL,VF,VL;
- S->Bounds(UF,UL,VF,VL);
-
- Standard_Real u,v;
- Standard_Boolean isUPeriodic = S->IsUPeriodic();
- if(isUPeriodic) {
- Standard_Real UPeriod = S->UPeriod();
- Standard_Real p2x = p2.X()+ShapeAnalysis::AdjustByPeriod(p2.X(),p1.X(),UPeriod);
- Standard_Real pmid = (p1.X()+p2x)/2.;
- u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,UF,UL);
- }
- else
- u= (p1.X()+p2.X())/2.;
-
- Standard_Boolean isVPeriodic = S->IsVPeriodic();
- if(isVPeriodic) {
- Standard_Real VPeriod = S->VPeriod();
- Standard_Real p2y = p2.Y()+ShapeAnalysis::AdjustByPeriod(p2.Y(),p1.Y(),VPeriod);
- Standard_Real pmid = (p1.Y()+p2y)/2.;
- v = pmid+ShapeAnalysis::AdjustToPeriod(pmid,VF,VL);
- }
- else
- v = (p1.Y()+p2.Y())/2.;
-
- gp_Pnt P = S->Value(u, v);
- n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnFace(n12, faceID, u, v);
- myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
- return n12;
- }
- if (edgeID>-1 || shapeType == TopAbs_EDGE) {
-
- TopoDS_Edge E;
- if( myShape.IsNull() )
- E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
- else {
- E = TopoDS::Edge(myShape);
- edgeID = myShapeID;
- }
-
- double p1 = GetNodeU(E,n1);
- double p2 = GetNodeU(E,n2);
-
- double f,l;
- Handle(Geom_Curve) C = BRep_Tool::Curve(E, f, l);
- if(!C.IsNull()) {
-
- Standard_Boolean isPeriodic = C->IsPeriodic();
- double u;
- if(isPeriodic) {
- Standard_Real Period = C->Period();
- Standard_Real p = p2+ShapeAnalysis::AdjustByPeriod(p2,p1,Period);
- Standard_Real pmid = (p1+p)/2.;
- u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,C->FirstParameter(),C->LastParameter());
- }
- else
- u = (p1+p2)/2.;
-
- gp_Pnt P = C->Value( u );
- n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnEdge(n12, edgeID, u);
- myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
- return n12;
- }
- }
+ else if ( uv.Modulus() > numeric_limits<double>::min() )
+ {
+ ((SMESH_MesherHelper*) this)->myOkNodePosShapes.insert( n->GetPosition()->GetShapeId() );
}
- // 3d variant
- double x = ( n1->X() + n2->X() )/2.;
- double y = ( n1->Y() + n2->Y() )/2.;
- double z = ( n1->Z() + n2->Z() )/2.;
- n12 = meshDS->AddNode(x,y,z);
- if(edgeID>-1)
- meshDS->SetNodeOnEdge(n12, edgeID);
- else if(faceID>-1)
- meshDS->SetNodeOnFace(n12, faceID);
- else
- meshDS->SetNodeInVolume(n12, myShapeID);
- myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
- return n12;
}
+ return true;
}
//=======================================================================
-//function : AddQuadraticEdge
-//purpose :
+//function : GetProjector
+//purpose : Return projector intitialized by given face without location, which is returned
//=======================================================================
-/**
- * Special function for creation quadratic edge
- */
-SMDS_QuadraticEdge* SMESH_MesherHelper::AddQuadraticEdge(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const int id,
- const bool force3d)
+
+GeomAPI_ProjectPointOnSurf& SMESH_MesherHelper::GetProjector(const TopoDS_Face& F,
+ TopLoc_Location& loc,
+ double tol ) const
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
-
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
-
- myCreateQuadratic = true;
+ Handle(Geom_Surface) surface = BRep_Tool::Surface( F,loc );
+ int faceID = GetMeshDS()->ShapeToIndex( F );
+ TID2Projector& i2proj = const_cast< TID2Projector&>( myFace2Projector );
+ TID2Projector::iterator i_proj = i2proj.find( faceID );
+ if ( i_proj == i2proj.end() )
+ {
+ if ( tol == 0 ) tol = BRep_Tool::Tolerance( F );
+ double U1, U2, V1, V2;
+ surface->Bounds(U1, U2, V1, V2);
+ GeomAPI_ProjectPointOnSurf* proj = new GeomAPI_ProjectPointOnSurf();
+ proj->Init( surface, U1, U2, V1, V2, tol );
+ i_proj = i2proj.insert( make_pair( faceID, proj )).first;
+ }
+ return *( i_proj->second );
+}
- if(id)
- return (SMDS_QuadraticEdge*)(meshDS->AddEdgeWithID(n1, n2, n12, id));
- else
- return (SMDS_QuadraticEdge*)(meshDS->AddEdge(n1, n2, n12));
+namespace
+{
+ gp_XY AverageUV(const gp_XY& uv1, const gp_XY& uv2) { return ( uv1 + uv2 ) / 2.; }
+ gp_XY_FunPtr(Added); // define gp_XY_Added pointer to function calling gp_XY::Added(gp_XY)
+ gp_XY_FunPtr(Subtracted);
}
//=======================================================================
-//function : AddFace
-//purpose :
+//function : applyIn2D
+//purpose : Perform given operation on two 2d points in parameric space of given surface.
+// It takes into account period of the surface. Use gp_XY_FunPtr macro
+// to easily define pointer to function of gp_XY class.
//=======================================================================
-/*!
- * Special function for creation quadratic triangle
- */
-SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const SMDS_MeshNode* n3,
- const int id,
- const bool force3d)
+
+gp_XY SMESH_MesherHelper::applyIn2D(const Handle(Geom_Surface)& surface,
+ const gp_XY& uv1,
+ const gp_XY& uv2,
+ xyFunPtr fun,
+ const bool resultInPeriod)
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
- if(!myCreateQuadratic) {
- if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, id);
- else
- return meshDS->AddFace(n1, n2, n3);
+ Standard_Boolean isUPeriodic = surface.IsNull() ? false : surface->IsUPeriodic();
+ Standard_Boolean isVPeriodic = surface.IsNull() ? false : surface->IsVPeriodic();
+ if ( !isUPeriodic && !isVPeriodic )
+ return fun(uv1,uv2);
+
+ // move uv2 not far than half-period from uv1
+ double u2 =
+ uv2.X()+(isUPeriodic ? ShapeAnalysis::AdjustByPeriod(uv2.X(),uv1.X(),surface->UPeriod()) :0);
+ double v2 =
+ uv2.Y()+(isVPeriodic ? ShapeAnalysis::AdjustByPeriod(uv2.Y(),uv1.Y(),surface->VPeriod()) :0);
+
+ // execute operation
+ gp_XY res = fun( uv1, gp_XY(u2,v2) );
+
+ // move result within period
+ if ( resultInPeriod )
+ {
+ Standard_Real UF,UL,VF,VL;
+ surface->Bounds(UF,UL,VF,VL);
+ if ( isUPeriodic )
+ res.SetX( res.X() + ShapeAnalysis::AdjustToPeriod(res.X(),UF,UL));
+ if ( isVPeriodic )
+ res.SetY( res.Y() + ShapeAnalysis::AdjustToPeriod(res.Y(),VF,VL));
}
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
- const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
- const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
-
- if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, n12, n23, n31, id);
- else
- return meshDS->AddFace(n1, n2, n3, n12, n23, n31);
+ return res;
}
+//=======================================================================
+//function : GetMiddleUV
+//purpose : Return middle UV taking in account surface period
+//=======================================================================
+gp_XY SMESH_MesherHelper::GetMiddleUV(const Handle(Geom_Surface)& surface,
+ const gp_XY& p1,
+ const gp_XY& p2)
+{
+ return applyIn2D( surface, p1, p2, & AverageUV );
+}
//=======================================================================
-//function : AddFace
-//purpose :
+//function : GetNodeU
+//purpose : Return node U on edge
//=======================================================================
-/*!
- * Special function for creation quadratic quadrangle
- */
-SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const SMDS_MeshNode* n3,
- const SMDS_MeshNode* n4,
- const int id,
- const bool force3d)
+
+double SMESH_MesherHelper::GetNodeU(const TopoDS_Edge& E,
+ const SMDS_MeshNode* n,
+ const SMDS_MeshNode* inEdgeNode,
+ bool* check)
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
- if(!myCreateQuadratic) {
- if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, n4, id);
+ double param = 0;
+ const SMDS_PositionPtr pos = n->GetPosition();
+ if ( pos->GetTypeOfPosition()==SMDS_TOP_EDGE )
+ {
+ const SMDS_EdgePosition* epos = static_cast<const SMDS_EdgePosition*>( pos.get() );
+ param = epos->GetUParameter();
+ }
+ else if( pos->GetTypeOfPosition() == SMDS_TOP_VERTEX )
+ {
+ if ( inEdgeNode && TopExp::FirstVertex( E ).IsSame( TopExp::LastVertex( E ))) // issue 0020128
+ {
+ Standard_Real f,l;
+ BRep_Tool::Range( E, f,l );
+ double uInEdge = GetNodeU( E, inEdgeNode );
+ param = ( fabs( uInEdge - f ) < fabs( l - uInEdge )) ? f : l;
+ }
else
- return meshDS->AddFace(n1, n2, n3, n4);
+ {
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ int vertexID = pos->GetShapeId();
+ const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
+ param = BRep_Tool::Parameter( V, E );
+ }
}
+ if ( check )
+ {
+ double tol = BRep_Tool::Tolerance( E );
+ double f,l; BRep_Tool::Range( E, f,l );
+ bool force = ( param < f-tol || param > l+tol );
+ if ( !force && pos->GetTypeOfPosition()==SMDS_TOP_EDGE )
+ force = ( GetMeshDS()->ShapeToIndex( E ) != pos->GetShapeId() );
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
- const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
- const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
- const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
-
- if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
- else
- return meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
+ *check = CheckNodeU( E, n, param, 2*tol, force );
+ }
+ return param;
}
-
//=======================================================================
-//function : AddVolume
-//purpose :
+//function : CheckNodeU
+//purpose : Check and fix node U on an edge
+// Return false if U is bad and could not be fixed
//=======================================================================
-/*!
- * Special function for creation quadratic volume
- */
-SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const SMDS_MeshNode* n3,
- const SMDS_MeshNode* n4,
- const SMDS_MeshNode* n5,
- const SMDS_MeshNode* n6,
- const int id,
- const bool force3d)
+
+bool SMESH_MesherHelper::CheckNodeU(const TopoDS_Edge& E,
+ const SMDS_MeshNode* n,
+ double& u,
+ const double tol,
+ const bool force,
+ double* distance) const
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
- if(!myCreateQuadratic) {
- if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, id);
+ if ( force || !myOkNodePosShapes.count( n->GetPosition()->GetShapeId() ))
+ {
+ // check that u is correct
+ TopLoc_Location loc; double f,l;
+ Handle(Geom_Curve) curve = BRep_Tool::Curve( E,loc,f,l );
+ if ( curve.IsNull() ) // degenerated edge
+ {
+ if ( u+tol < f || u-tol > l )
+ {
+ double r = Max( 0.5, 1 - tol*n->GetID()); // to get a unique u on edge
+ u = f*r + l*(1-r);
+ }
+ }
else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6);
+ {
+ gp_Pnt nodePnt = SMESH_MeshEditor::TNodeXYZ( n );
+ if ( !loc.IsIdentity() ) nodePnt.Transform( loc.Transformation().Inverted() );
+ double dist = nodePnt.Distance( curve->Value( u ));
+ if ( distance ) *distance = dist;
+ if ( dist > tol )
+ {
+ // u incorrect, project the node to the curve
+ GeomAPI_ProjectPointOnCurve projector( nodePnt, curve, f, l );
+ if ( projector.NbPoints() < 1 )
+ {
+ MESSAGE( "SMESH_MesherHelper::CheckNodeU() failed to project" );
+ return false;
+ }
+ Quantity_Parameter U = projector.LowerDistanceParameter();
+ u = double( U );
+ dist = nodePnt.Distance( curve->Value( U ));
+ if ( distance ) *distance = dist;
+ if ( dist > tol )
+ {
+ MESSAGE( "SMESH_MesherHelper::CheckNodeU(), invalid projection" );
+ return false;
+ }
+ //u = double( U );
+ }
+ else if ( fabs( u ) > numeric_limits<double>::min() )
+ {
+ ((SMESH_MesherHelper*) this)->myOkNodePosShapes.insert( n->GetPosition()->GetShapeId() );
+ }
+ if (( u < f-tol || u > l+tol ) && force )
+ {
+ // node is on vertex but is set on periodic but trimmed edge (issue 0020890)
+ try
+ {
+ // do not use IsPeriodic() as Geom_TrimmedCurve::IsPeriodic () returns false
+ double period = curve->Period();
+ u = ( u < f ) ? u + period : u - period;
+ }
+ catch (Standard_Failure& exc)
+ {
+ return false;
+ }
+ }
+ }
}
+ return true;
+}
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
- const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
- const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
+//=======================================================================
+//function : GetMediumNode
+//purpose : Return existing or create new medium nodes between given ones
+//=======================================================================
- const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
- const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
- const SMDS_MeshNode* n64 = GetMediumNode(n6,n4,force3d);
+const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ bool force3d)
+{
+ // Find existing node
- const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
- const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
- const SMDS_MeshNode* n36 = GetMediumNode(n3,n6,force3d);
+ SMESH_TLink link(n1,n2);
+ ItTLinkNode itLN = myTLinkNodeMap.find( link );
+ if ( itLN != myTLinkNodeMap.end() ) {
+ return (*itLN).second;
+ }
- if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6,
- n12, n23, n31, n45, n56, n64, n14, n25, n36, id);
- else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6,
- n12, n23, n31, n45, n56, n64, n14, n25, n36);
-}
+ // Create medium node
+ SMDS_MeshNode* n12;
+ SMESHDS_Mesh* meshDS = GetMeshDS();
-//=======================================================================
-//function : AddVolume
-//purpose :
-//=======================================================================
-/*!
- * Special function for creation quadratic volume
+ // get type of shape for the new medium node
+ int faceID = -1, edgeID = -1;
+ const SMDS_PositionPtr Pos1 = n1->GetPosition();
+ const SMDS_PositionPtr Pos2 = n2->GetPosition();
+
+ if( myShape.IsNull() )
+ {
+ if( Pos1->GetTypeOfPosition()==SMDS_TOP_FACE ) {
+ faceID = Pos1->GetShapeId();
+ }
+ else if( Pos2->GetTypeOfPosition()==SMDS_TOP_FACE ) {
+ faceID = Pos2->GetShapeId();
+ }
+
+ if( Pos1->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
+ edgeID = Pos1->GetShapeId();
+ }
+ if( Pos2->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
+ edgeID = Pos2->GetShapeId();
+ }
+ }
+ // get positions of the given nodes on shapes
+ TopoDS_Edge E; double u [2];
+ TopoDS_Face F; gp_XY uv[2];
+ bool uvOK[2] = { false, false };
+ TopAbs_ShapeEnum shapeType = myShape.IsNull() ? TopAbs_SHAPE : myShape.ShapeType();
+ if ( faceID>0 || shapeType == TopAbs_FACE)
+ {
+ if( myShape.IsNull() )
+ F = TopoDS::Face(meshDS->IndexToShape(faceID));
+ else {
+ F = TopoDS::Face(myShape);
+ faceID = myShapeID;
+ }
+ uv[0] = GetNodeUV(F,n1,n2, force3d ? 0 : &uvOK[0]);
+ uv[1] = GetNodeUV(F,n2,n1, force3d ? 0 : &uvOK[1]);
+ }
+ else if (edgeID>0 || shapeType == TopAbs_EDGE)
+ {
+ if ( Pos1->GetTypeOfPosition()==SMDS_TOP_EDGE &&
+ Pos2->GetTypeOfPosition()==SMDS_TOP_EDGE &&
+ Pos1->GetShapeId() != Pos2->GetShapeId() ) // issue 0021006
+ return getMediumNodeOnComposedWire(n1,n2,force3d);
+
+ if( myShape.IsNull() )
+ E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
+ else {
+ E = TopoDS::Edge(myShape);
+ edgeID = myShapeID;
+ }
+ u[0] = GetNodeU(E,n1,n2, force3d ? 0 : &uvOK[0]);
+ u[1] = GetNodeU(E,n2,n1, force3d ? 0 : &uvOK[1]);
+ }
+ if(!force3d)
+ {
+ // we try to create medium node using UV parameters of
+ // nodes, else - medium between corresponding 3d points
+ if( ! F.IsNull() )
+ {
+ if ( uvOK[0] && uvOK[1] )
+ {
+ if ( IsDegenShape( Pos1->GetShapeId() ))
+ if ( myParIndex & U_periodic ) uv[0].SetCoord( 1, uv[1].Coord( 1 ));
+ else uv[0].SetCoord( 2, uv[1].Coord( 2 ));
+ else if ( IsDegenShape( Pos2->GetShapeId() ))
+ if ( myParIndex & U_periodic ) uv[1].SetCoord( 1, uv[0].Coord( 1 ));
+ else uv[1].SetCoord( 2, uv[0].Coord( 2 ));
+
+ TopLoc_Location loc;
+ Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc);
+ gp_XY UV = GetMiddleUV( S, uv[0], uv[1] );
+ gp_Pnt P = S->Value( UV.X(), UV.Y() ).Transformed(loc);
+ n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y());
+ myTLinkNodeMap.insert(make_pair(link,n12));
+ return n12;
+ }
+ }
+ else if ( !E.IsNull() )
+ {
+ double f,l;
+ Handle(Geom_Curve) C = BRep_Tool::Curve(E, f, l);
+ if(!C.IsNull())
+ {
+ Standard_Boolean isPeriodic = C->IsPeriodic();
+ double U;
+ if(isPeriodic) {
+ Standard_Real Period = C->Period();
+ Standard_Real p = u[1]+ShapeAnalysis::AdjustByPeriod(u[1],u[0],Period);
+ Standard_Real pmid = (u[0]+p)/2.;
+ U = pmid+ShapeAnalysis::AdjustToPeriod(pmid,C->FirstParameter(),C->LastParameter());
+ }
+ else
+ U = (u[0]+u[1])/2.;
+
+ gp_Pnt P = C->Value( U );
+ n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnEdge(n12, edgeID, U);
+ myTLinkNodeMap.insert(make_pair(link,n12));
+ return n12;
+ }
+ }
+ }
+ // 3d variant
+ double x = ( n1->X() + n2->X() )/2.;
+ double y = ( n1->Y() + n2->Y() )/2.;
+ double z = ( n1->Z() + n2->Z() )/2.;
+ n12 = meshDS->AddNode(x,y,z);
+ if ( !F.IsNull() )
+ {
+ gp_XY UV = ( uv[0] + uv[1] ) / 2.;
+ CheckNodeUV( F, n12, UV, 2*BRep_Tool::Tolerance( F ), /*force=*/true);
+ meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y() );
+ }
+ else if ( !E.IsNull() )
+ {
+ double U = ( u[0] + u[1] ) / 2.;
+ CheckNodeU( E, n12, U, 2*BRep_Tool::Tolerance( E ), /*force=*/true);
+ meshDS->SetNodeOnEdge(n12, edgeID, U);
+ }
+ else if ( myShapeID > 0 )
+ {
+ meshDS->SetNodeInVolume(n12, myShapeID);
+ }
+ myTLinkNodeMap.insert( make_pair( link, n12 ));
+ return n12;
+}
+
+//================================================================================
+/*!
+ * \brief Makes a medium node if nodes reside different edges
*/
+//================================================================================
+
+const SMDS_MeshNode* SMESH_MesherHelper::getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ bool force3d)
+{
+ gp_Pnt middle = 0.5 * XYZ(n1) + 0.5 * XYZ(n2);
+ SMDS_MeshNode* n12 = AddNode( middle.X(), middle.Y(), middle.Z() );
+
+ // To find position on edge and 3D position for n12,
+ // project <middle> to 2 edges and select projection most close to <middle>
+
+ double u = 0, distMiddleProj = Precision::Infinite();
+ int iOkEdge = 0;
+ TopoDS_Edge edges[2];
+ for ( int is2nd = 0; is2nd < 2; ++is2nd )
+ {
+ // get an edge
+ const SMDS_MeshNode* n = is2nd ? n2 : n1;
+ TopoDS_Shape shape = GetSubShapeByNode( n, GetMeshDS() );
+ if ( shape.IsNull() || shape.ShapeType() != TopAbs_EDGE )
+ continue;
+
+ // project to get U of projection and distance from middle to projection
+ TopoDS_Edge edge = edges[ is2nd ] = TopoDS::Edge( shape );
+ double node2MiddleDist = middle.Distance( XYZ(n) );
+ double foundU = GetNodeU( edge, n ), foundDist = node2MiddleDist;
+ CheckNodeU( edge, n12, foundU, 2*BRep_Tool::Tolerance(edge), /*force=*/true, &foundDist );
+ if ( foundDist < node2MiddleDist )
+ {
+ distMiddleProj = foundDist;
+ u = foundU;
+ iOkEdge = is2nd;
+ }
+ }
+ if ( Precision::IsInfinite( distMiddleProj ))
+ {
+ // both projections failed; set n12 on the edge of n1 with U of a common vertex
+ TopoDS_Vertex vCommon;
+ if ( TopExp::CommonVertex( edges[0], edges[1], vCommon ))
+ u = BRep_Tool::Parameter( vCommon, edges[0] );
+ else
+ {
+ double f,l, u0 = GetNodeU( edges[0], n1 );
+ BRep_Tool::Range( edges[0],f,l );
+ u = ( fabs(u0-f) < fabs(u0-l) ) ? f : l;
+ }
+ iOkEdge = 0;
+ distMiddleProj = 0;
+ }
+
+ // move n12 to position of a successfull projection
+ double tol = BRep_Tool::Tolerance(edges[ iOkEdge ]);
+ if ( !force3d && distMiddleProj > 2*tol )
+ {
+ TopLoc_Location loc; double f,l;
+ Handle(Geom_Curve) curve = BRep_Tool::Curve( edges[iOkEdge],loc,f,l );
+ gp_Pnt p = curve->Value( u );
+ GetMeshDS()->MoveNode( n12, p.X(), p.Y(), p.Z() );
+ }
+
+ GetMeshDS()->SetNodeOnEdge(n12, edges[iOkEdge], u);
+
+ myTLinkNodeMap.insert( make_pair( SMESH_TLink(n1,n2), n12 ));
+
+ return n12;
+}
+
+//=======================================================================
+//function : AddNode
+//purpose : Creates a node
+//=======================================================================
+
+SMDS_MeshNode* SMESH_MesherHelper::AddNode(double x, double y, double z, int ID)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshNode* node = 0;
+ if ( ID )
+ node = meshDS->AddNodeWithID( x, y, z, ID );
+ else
+ node = meshDS->AddNode( x, y, z );
+ if ( mySetElemOnShape && myShapeID > 0 ) {
+ switch ( myShape.ShapeType() ) {
+ case TopAbs_SOLID: meshDS->SetNodeInVolume( node, myShapeID); break;
+ case TopAbs_SHELL: meshDS->SetNodeInVolume( node, myShapeID); break;
+ case TopAbs_FACE: meshDS->SetNodeOnFace( node, myShapeID); break;
+ case TopAbs_EDGE: meshDS->SetNodeOnEdge( node, myShapeID); break;
+ case TopAbs_VERTEX: meshDS->SetNodeOnVertex( node, myShapeID); break;
+ default: ;
+ }
+ }
+ return node;
+}
+
+//=======================================================================
+//function : AddEdge
+//purpose : Creates quadratic or linear edge
+//=======================================================================
+
+SMDS_MeshEdge* SMESH_MesherHelper::AddEdge(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+
+ SMDS_MeshEdge* edge = 0;
+ if (myCreateQuadratic) {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ if(id)
+ edge = meshDS->AddEdgeWithID(n1, n2, n12, id);
+ else
+ edge = meshDS->AddEdge(n1, n2, n12);
+ }
+ else {
+ if(id)
+ edge = meshDS->AddEdgeWithID(n1, n2, id);
+ else
+ edge = meshDS->AddEdge(n1, n2);
+ }
+
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( edge, myShapeID );
+
+ return edge;
+}
+
+//=======================================================================
+//function : AddFace
+//purpose : Creates quadratic or linear triangle
+//=======================================================================
+
+SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshFace* elem = 0;
+
+ if( n1==n2 || n2==n3 || n3==n1 )
+ return elem;
+
+ if(!myCreateQuadratic) {
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3);
+ }
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
+
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n12, n23, n31, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3, n12, n23, n31);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
+
+//=======================================================================
+//function : AddFace
+//purpose : Creates quadratic or linear quadrangle
+//=======================================================================
+
+SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshFace* elem = 0;
+
+ if( n1==n2 ) {
+ return AddFace(n1,n3,n4,id,force3d);
+ }
+ if( n1==n3 ) {
+ return AddFace(n1,n2,n4,id,force3d);
+ }
+ if( n1==n4 ) {
+ return AddFace(n1,n2,n3,id,force3d);
+ }
+ if( n2==n3 ) {
+ return AddFace(n1,n2,n4,id,force3d);
+ }
+ if( n2==n4 ) {
+ return AddFace(n1,n2,n3,id,force3d);
+ }
+ if( n3==n4 ) {
+ return AddFace(n1,n2,n3,id,force3d);
+ }
+
+ if(!myCreateQuadratic) {
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n4, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3, n4);
+ }
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
+ const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
+
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
+
+//=======================================================================
+//function : AddPolygonalFace
+//purpose : Creates polygon, with additional nodes in quadratic mesh
+//=======================================================================
+
+SMDS_MeshFace* SMESH_MesherHelper::AddPolygonalFace (const vector<const SMDS_MeshNode*>& nodes,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshFace* elem = 0;
+
+ if(!myCreateQuadratic) {
+ if(id)
+ elem = meshDS->AddPolygonalFaceWithID(nodes, id);
+ else
+ elem = meshDS->AddPolygonalFace(nodes);
+ }
+ else {
+ vector<const SMDS_MeshNode*> newNodes;
+ for ( int i = 0; i < nodes.size(); ++i )
+ {
+ const SMDS_MeshNode* n1 = nodes[i];
+ const SMDS_MeshNode* n2 = nodes[(i+1)/nodes.size()];
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ newNodes.push_back( n1 );
+ newNodes.push_back( n12 );
+ }
+ if(id)
+ elem = meshDS->AddPolygonalFaceWithID(newNodes, id);
+ else
+ elem = meshDS->AddPolygonalFace(newNodes);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
+
+//=======================================================================
+//function : AddVolume
+//purpose : Creates quadratic or linear prism
+//=======================================================================
+
+SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n5,
+ const SMDS_MeshNode* n6,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshVolume* elem = 0;
+ if(!myCreateQuadratic) {
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6);
+ }
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
+
+ const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
+ const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
+ const SMDS_MeshNode* n64 = GetMediumNode(n6,n4,force3d);
+
+ const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
+ const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
+ const SMDS_MeshNode* n36 = GetMediumNode(n3,n6,force3d);
+
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6,
+ n12, n23, n31, n45, n56, n64, n14, n25, n36, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6,
+ n12, n23, n31, n45, n56, n64, n14, n25, n36);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
+
+//=======================================================================
+//function : AddVolume
+//purpose : Creates quadratic or linear tetrahedron
+//=======================================================================
+
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const SMDS_MeshNode* n4,
const int id,
- const bool force3d)
+ const bool force3d)
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshVolume* elem = 0;
if(!myCreateQuadratic) {
if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, id);
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, id);
else
- return meshDS->AddVolume(n1, n2, n3, n4);
+ elem = meshDS->AddVolume(n1, n2, n3, n4);
}
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
- const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
- const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
+ const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
+ const SMDS_MeshNode* n24 = GetMediumNode(n2,n4,force3d);
+ const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
- const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
- const SMDS_MeshNode* n24 = GetMediumNode(n2,n4,force3d);
- const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
- if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34, id);
- else
- return meshDS->AddVolume(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34);
+ return elem;
}
+//=======================================================================
+//function : AddVolume
+//purpose : Creates quadratic or linear pyramid
+//=======================================================================
+
+SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n5,
+ const int id,
+ const bool force3d)
+{
+ SMDS_MeshVolume* elem = 0;
+ if(!myCreateQuadratic) {
+ if(id)
+ elem = GetMeshDS()->AddVolumeWithID(n1, n2, n3, n4, n5, id);
+ else
+ elem = GetMeshDS()->AddVolume(n1, n2, n3, n4, n5);
+ }
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
+ const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
+
+ const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
+ const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
+ const SMDS_MeshNode* n35 = GetMediumNode(n3,n5,force3d);
+ const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
+
+ if(id)
+ elem = GetMeshDS()->AddVolumeWithID ( n1, n2, n3, n4, n5,
+ n12, n23, n34, n41,
+ n15, n25, n35, n45,
+ id);
+ else
+ elem = GetMeshDS()->AddVolume( n1, n2, n3, n4, n5,
+ n12, n23, n34, n41,
+ n15, n25, n35, n45);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ GetMeshDS()->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
//=======================================================================
//function : AddVolume
-//purpose :
+//purpose : Creates quadratic or linear hexahedron
//=======================================================================
-/*!
- * Special function for creation quadratic volume
- */
+
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const SMDS_MeshNode* n7,
const SMDS_MeshNode* n8,
const int id,
- const bool force3d)
+ const bool force3d)
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshVolume* elem = 0;
if(!myCreateQuadratic) {
if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8, id);
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8, id);
else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8);
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8);
}
+ else {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
+ const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
+ const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
+
+ const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
+ const SMDS_MeshNode* n67 = GetMediumNode(n6,n7,force3d);
+ const SMDS_MeshNode* n78 = GetMediumNode(n7,n8,force3d);
+ const SMDS_MeshNode* n85 = GetMediumNode(n8,n5,force3d);
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
- const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
- const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
- const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
+ const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
+ const SMDS_MeshNode* n26 = GetMediumNode(n2,n6,force3d);
+ const SMDS_MeshNode* n37 = GetMediumNode(n3,n7,force3d);
+ const SMDS_MeshNode* n48 = GetMediumNode(n4,n8,force3d);
- const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
- const SMDS_MeshNode* n67 = GetMediumNode(n6,n7,force3d);
- const SMDS_MeshNode* n78 = GetMediumNode(n7,n8,force3d);
- const SMDS_MeshNode* n85 = GetMediumNode(n8,n5,force3d);
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48);
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
+}
- const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
- const SMDS_MeshNode* n26 = GetMediumNode(n2,n6,force3d);
- const SMDS_MeshNode* n37 = GetMediumNode(n3,n7,force3d);
- const SMDS_MeshNode* n48 = GetMediumNode(n4,n8,force3d);
+//=======================================================================
+//function : AddPolyhedralVolume
+//purpose : Creates polyhedron. In quadratic mesh, adds medium nodes
+//=======================================================================
- if(id)
- return meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
- n12, n23, n34, n41, n56, n67,
- n78, n85, n15, n26, n37, n48, id);
+SMDS_MeshVolume*
+SMESH_MesherHelper::AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
+ const std::vector<int>& quantities,
+ const int id,
+ const bool force3d)
+{
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshVolume* elem = 0;
+ if(!myCreateQuadratic)
+ {
+ if(id)
+ elem = meshDS->AddPolyhedralVolumeWithID(nodes, quantities, id);
+ else
+ elem = meshDS->AddPolyhedralVolume(nodes, quantities);
+ }
else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
- n12, n23, n34, n41, n56, n67,
- n78, n85, n15, n26, n37, n48);
+ {
+ vector<const SMDS_MeshNode*> newNodes;
+ vector<int> newQuantities;
+ for ( int iFace=0, iN=0; iFace < quantities.size(); ++iFace)
+ {
+ int nbNodesInFace = quantities[iFace];
+ newQuantities.push_back(0);
+ for ( int i = 0; i < nbNodesInFace; ++i )
+ {
+ const SMDS_MeshNode* n1 = nodes[ iN + i ];
+ newNodes.push_back( n1 );
+ newQuantities.back()++;
+
+ const SMDS_MeshNode* n2 = nodes[ iN + ( i+1==nbNodesInFace ? 0 : i+1 )];
+// if ( n1->GetPosition()->GetTypeOfPosition() != SMDS_TOP_3DSPACE &&
+// n2->GetPosition()->GetTypeOfPosition() != SMDS_TOP_3DSPACE )
+ {
+ const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ newNodes.push_back( n12 );
+ newQuantities.back()++;
+ }
+ }
+ iN += nbNodesInFace;
+ }
+ if(id)
+ elem = meshDS->AddPolyhedralVolumeWithID( newNodes, newQuantities, id );
+ else
+ elem = meshDS->AddPolyhedralVolume( newNodes, newQuantities );
+ }
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( elem, myShapeID );
+
+ return elem;
}
+//=======================================================================
+//function : LoadNodeColumns
+//purpose : Load nodes bound to face into a map of node columns
+//=======================================================================
+
+bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
+ const TopoDS_Face& theFace,
+ const TopoDS_Edge& theBaseEdge,
+ SMESHDS_Mesh* theMesh)
+{
+ SMESHDS_SubMesh* faceSubMesh = theMesh->MeshElements( theFace );
+ if ( !faceSubMesh || faceSubMesh->NbElements() == 0 )
+ return false;
+
+ // get nodes on theBaseEdge sorted by param on edge and initialize theParam2ColumnMap with them
+
+ map< double, const SMDS_MeshNode*> sortedBaseNodes;
+ if ( !SMESH_Algo::GetSortedNodesOnEdge( theMesh, theBaseEdge,/*noMedium=*/true, sortedBaseNodes)
+ || sortedBaseNodes.size() < 2 )
+ return false;
+
+ int nbRows = faceSubMesh->NbElements() / ( sortedBaseNodes.size()-1 ) + 1;
+ map< double, const SMDS_MeshNode*>::iterator u_n = sortedBaseNodes.begin();
+ double f = u_n->first, range = sortedBaseNodes.rbegin()->first - f;
+ for ( ; u_n != sortedBaseNodes.end(); u_n++ )
+ {
+ double par = ( u_n->first - f ) / range;
+ vector<const SMDS_MeshNode*>& nCol = theParam2ColumnMap[ par ];
+ nCol.resize( nbRows );
+ nCol[0] = u_n->second;
+ }
+ // fill theParam2ColumnMap column by column by passing from nodes on
+ // theBaseEdge up via mesh faces on theFace
+
+ TParam2ColumnMap::iterator par_nVec_2 = theParam2ColumnMap.begin();
+ TParam2ColumnMap::iterator par_nVec_1 = par_nVec_2++;
+ TIDSortedElemSet emptySet, avoidSet;
+ for ( ; par_nVec_2 != theParam2ColumnMap.end(); ++par_nVec_1, ++par_nVec_2 )
+ {
+ vector<const SMDS_MeshNode*>& nCol1 = par_nVec_1->second;
+ vector<const SMDS_MeshNode*>& nCol2 = par_nVec_2->second;
+
+ int i1, i2, iRow = 0;
+ const SMDS_MeshNode *n1 = nCol1[0], *n2 = nCol2[0];
+ // find face sharing node n1 and n2 and belonging to faceSubMesh
+ while ( const SMDS_MeshElement* face =
+ SMESH_MeshEditor::FindFaceInSet( n1, n2, emptySet, avoidSet, &i1, &i2))
+ {
+ if ( faceSubMesh->Contains( face ))
+ {
+ int nbNodes = face->IsQuadratic() ? face->NbNodes()/2 : face->NbNodes();
+ if ( nbNodes != 4 )
+ return false;
+ n1 = face->GetNode( (i2+2) % 4 ); // opposite corner of quadrangle face
+ n2 = face->GetNode( (i1+2) % 4 );
+ if ( ++iRow >= nbRows )
+ return false;
+ nCol1[ iRow ] = n1;
+ nCol2[ iRow ] = n2;
+ avoidSet.clear();
+ }
+ avoidSet.insert( face );
+ }
+ if ( iRow + 1 < nbRows ) // compact if necessary
+ nCol1.resize( iRow + 1 ), nCol2.resize( iRow + 1 );
+ }
+ return true;
+}
+
+//=======================================================================
+//function : NbAncestors
+//purpose : Return number of unique ancestors of the shape
+//=======================================================================
+
+int SMESH_MesherHelper::NbAncestors(const TopoDS_Shape& shape,
+ const SMESH_Mesh& mesh,
+ TopAbs_ShapeEnum ancestorType/*=TopAbs_SHAPE*/)
+{
+ TopTools_MapOfShape ancestors;
+ TopTools_ListIteratorOfListOfShape ansIt( mesh.GetAncestors(shape) );
+ for ( ; ansIt.More(); ansIt.Next() ) {
+ if ( ancestorType == TopAbs_SHAPE || ansIt.Value().ShapeType() == ancestorType )
+ ancestors.Add( ansIt.Value() );
+ }
+ return ancestors.Extent();
+}
+
+//=======================================================================
+//function : GetSubShapeOri
+//purpose : Return orientation of sub-shape in the main shape
+//=======================================================================
+
+TopAbs_Orientation SMESH_MesherHelper::GetSubShapeOri(const TopoDS_Shape& shape,
+ const TopoDS_Shape& subShape)
+{
+ TopAbs_Orientation ori = TopAbs_Orientation(-1);
+ if ( !shape.IsNull() && !subShape.IsNull() )
+ {
+ TopExp_Explorer e( shape, subShape.ShapeType() );
+ if ( shape.Orientation() >= TopAbs_INTERNAL ) // TopAbs_INTERNAL or TopAbs_EXTERNAL
+ e.Init( shape.Oriented(TopAbs_FORWARD), subShape.ShapeType() );
+ for ( ; e.More(); e.Next())
+ if ( subShape.IsSame( e.Current() ))
+ break;
+ if ( e.More() )
+ ori = e.Current().Orientation();
+ }
+ return ori;
+}
+
+//=======================================================================
+//function : IsSubShape
+//purpose :
+//=======================================================================
+
+bool SMESH_MesherHelper::IsSubShape( const TopoDS_Shape& shape,
+ const TopoDS_Shape& mainShape )
+{
+ if ( !shape.IsNull() && !mainShape.IsNull() )
+ {
+ for ( TopExp_Explorer exp( mainShape, shape.ShapeType());
+ exp.More();
+ exp.Next() )
+ if ( shape.IsSame( exp.Current() ))
+ return true;
+ }
+ SCRUTE((shape.IsNull()));
+ SCRUTE((mainShape.IsNull()));
+ return false;
+}
+
+//=======================================================================
+//function : IsSubShape
+//purpose :
+//=======================================================================
+
+bool SMESH_MesherHelper::IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh )
+{
+ if ( shape.IsNull() || !aMesh )
+ return false;
+ return
+ aMesh->GetMeshDS()->ShapeToIndex( shape ) ||
+ // PAL16202
+ shape.ShapeType() == TopAbs_COMPOUND && aMesh->GetMeshDS()->IsGroupOfSubShapes( shape );
+}
+
+//================================================================================
+/*!
+ * \brief Return maximal tolerance of shape
+ */
+//================================================================================
+
+double SMESH_MesherHelper::MaxTolerance( const TopoDS_Shape& shape )
+{
+ double tol = Precision::Confusion();
+ TopExp_Explorer exp;
+ for ( exp.Init( shape, TopAbs_FACE ); exp.More(); exp.Next() )
+ tol = Max( tol, BRep_Tool::Tolerance( TopoDS::Face( exp.Current())));
+ for ( exp.Init( shape, TopAbs_EDGE ); exp.More(); exp.Next() )
+ tol = Max( tol, BRep_Tool::Tolerance( TopoDS::Edge( exp.Current())));
+ for ( exp.Init( shape, TopAbs_VERTEX ); exp.More(); exp.Next() )
+ tol = Max( tol, BRep_Tool::Tolerance( TopoDS::Vertex( exp.Current())));
+
+ return tol;
+}
+
+//=======================================================================
+//function : IsQuadraticMesh
+//purpose : Check mesh without geometry for: if all elements on this shape are quadratic,
+// quadratic elements will be created.
+// Used then generated 3D mesh without geometry.
+//=======================================================================
+
+SMESH_MesherHelper:: MType SMESH_MesherHelper::IsQuadraticMesh()
+{
+ int NbAllEdgsAndFaces=0;
+ int NbQuadFacesAndEdgs=0;
+ int NbFacesAndEdges=0;
+ //All faces and edges
+ NbAllEdgsAndFaces = myMesh->NbEdges() + myMesh->NbFaces();
+
+ //Quadratic faces and edges
+ NbQuadFacesAndEdgs = myMesh->NbEdges(ORDER_QUADRATIC) + myMesh->NbFaces(ORDER_QUADRATIC);
+
+ //Linear faces and edges
+ NbFacesAndEdges = myMesh->NbEdges(ORDER_LINEAR) + myMesh->NbFaces(ORDER_LINEAR);
+
+ if (NbAllEdgsAndFaces == NbQuadFacesAndEdgs) {
+ //Quadratic mesh
+ return SMESH_MesherHelper::QUADRATIC;
+ }
+ else if (NbAllEdgsAndFaces == NbFacesAndEdges) {
+ //Linear mesh
+ return SMESH_MesherHelper::LINEAR;
+ }
+ else
+ //Mesh with both type of elements
+ return SMESH_MesherHelper::COMP;
+}
+
+//=======================================================================
+//function : GetOtherParam
+//purpose : Return an alternative parameter for a node on seam
+//=======================================================================
+
+double SMESH_MesherHelper::GetOtherParam(const double param) const
+{
+ int i = myParIndex & U_periodic ? 0 : 1;
+ return fabs(param-myPar1[i]) < fabs(param-myPar2[i]) ? myPar2[i] : myPar1[i];
+}
+
+//#include <Perf_Meter.hxx>
+
+//=======================================================================
+namespace { // Structures used by FixQuadraticElements()
+//=======================================================================
+
+#define __DMP__(txt) \
+ //cout << txt
+#define MSG(txt) __DMP__(txt<<endl)
+#define MSGBEG(txt) __DMP__(txt)
+
+ //const double straightTol2 = 1e-33; // to detect straing links
+ bool isStraightLink(double linkLen2, double middleNodeMove2)
+ {
+ // straight if <node move> < 1/15 * <link length>
+ return middleNodeMove2 < 1/15./15. * linkLen2;
+ }
+
+ struct QFace;
+ // ---------------------------------------
+ /*!
+ * \brief Quadratic link knowing its faces
+ */
+ struct QLink: public SMESH_TLink
+ {
+ const SMDS_MeshNode* _mediumNode;
+ mutable vector<const QFace* > _faces;
+ mutable gp_Vec _nodeMove;
+ mutable int _nbMoves;
+
+ QLink(const SMDS_MeshNode* n1, const SMDS_MeshNode* n2, const SMDS_MeshNode* nm):
+ SMESH_TLink( n1,n2 ), _mediumNode(nm), _nodeMove(0,0,0), _nbMoves(0) {
+ _faces.reserve(4);
+ //if ( MediumPos() != SMDS_TOP_3DSPACE )
+ _nodeMove = MediumPnt() - MiddlePnt();
+ }
+ void SetContinuesFaces() const;
+ const QFace* GetContinuesFace( const QFace* face ) const;
+ bool OnBoundary() const;
+ gp_XYZ MiddlePnt() const { return ( XYZ( node1() ) + XYZ( node2() )) / 2.; }
+ gp_XYZ MediumPnt() const { return XYZ( _mediumNode ); }
+
+ SMDS_TypeOfPosition MediumPos() const
+ { return _mediumNode->GetPosition()->GetTypeOfPosition(); }
+ SMDS_TypeOfPosition EndPos(bool isSecond) const
+ { return (isSecond ? node2() : node1())->GetPosition()->GetTypeOfPosition(); }
+ const SMDS_MeshNode* EndPosNode(SMDS_TypeOfPosition pos) const
+ { return EndPos(0) == pos ? node1() : EndPos(1) == pos ? node2() : 0; }
+
+ void Move(const gp_Vec& move, bool sum=false) const
+ { _nodeMove += move; _nbMoves += sum ? (_nbMoves==0) : 1; }
+ gp_XYZ Move() const { return _nodeMove.XYZ() / _nbMoves; }
+ bool IsMoved() const { return (_nbMoves > 0 && !IsStraight()); }
+ bool IsStraight() const
+ { return isStraightLink( (XYZ(node1())-XYZ(node2())).SquareModulus(),
+ _nodeMove.SquareMagnitude());
+ }
+ bool operator<(const QLink& other) const {
+ return (node1()->GetID() == other.node1()->GetID() ?
+ node2()->GetID() < other.node2()->GetID() :
+ node1()->GetID() < other.node1()->GetID());
+ }
+ struct PtrComparator {
+ bool operator() (const QLink* l1, const QLink* l2 ) const { return *l1 < *l2; }
+ };
+ };
+ // ---------------------------------------------------------
+ /*!
+ * \brief Link in the chain of links; it connects two faces
+ */
+ struct TChainLink
+ {
+ const QLink* _qlink;
+ mutable const QFace* _qfaces[2];
+
+ TChainLink(const QLink* qlink=0):_qlink(qlink) {
+ _qfaces[0] = _qfaces[1] = 0;
+ }
+ void SetFace(const QFace* face) const { int iF = _qfaces[0] ? 1 : 0; _qfaces[iF]=face; }
+
+ bool IsBoundary() const { return !_qfaces[1]; }
+
+ void RemoveFace( const QFace* face ) const
+ { _qfaces[(face == _qfaces[1])] = 0; if (!_qfaces[0]) std::swap(_qfaces[0],_qfaces[1]); }
+
+ const QFace* NextFace( const QFace* f ) const
+ { return _qfaces[0]==f ? _qfaces[1] : _qfaces[0]; }
+
+ const SMDS_MeshNode* NextNode( const SMDS_MeshNode* n ) const
+ { return n == _qlink->node1() ? _qlink->node2() : _qlink->node1(); }
+
+ bool operator<(const TChainLink& other) const { return *_qlink < *other._qlink; }
+
+ operator bool() const { return (_qlink); }
+
+ const QLink* operator->() const { return _qlink; }
+
+ gp_Vec Normal() const;
+ };
+ // --------------------------------------------------------------------
+ typedef list< TChainLink > TChain;
+ typedef set < TChainLink > TLinkSet;
+ typedef TLinkSet::const_iterator TLinkInSet;
+
+ const int theFirstStep = 5;
+
+ enum { ERR_OK, ERR_TRI, ERR_PRISM, ERR_UNKNOWN }; // errors of QFace::GetLinkChain()
+ // --------------------------------------------------------------------
+ /*!
+ * \brief Face shared by two volumes and bound by QLinks
+ */
+ struct QFace: public TIDSortedElemSet
+ {
+ mutable const SMDS_MeshElement* _volumes[2];
+ mutable vector< const QLink* > _sides;
+ mutable bool _sideIsAdded[4]; // added in chain of links
+ gp_Vec _normal;
+#ifdef _DEBUG_
+ mutable const SMDS_MeshElement* _face;
+#endif
+
+ QFace( const vector< const QLink*>& links, const SMDS_MeshElement* face=0 );
+
+ void SetVolume(const SMDS_MeshElement* v) const { _volumes[ _volumes[0] ? 1 : 0 ] = v; }
+
+ int NbVolumes() const { return !_volumes[0] ? 0 : !_volumes[1] ? 1 : 2; }
+
+ void AddSelfToLinks() const {
+ for ( int i = 0; i < _sides.size(); ++i )
+ _sides[i]->_faces.push_back( this );
+ }
+ int LinkIndex( const QLink* side ) const {
+ for (int i=0; i<_sides.size(); ++i ) if ( _sides[i] == side ) return i;
+ return -1;
+ }
+ bool GetLinkChain( int iSide, TChain& chain, SMDS_TypeOfPosition pos, int& err) const;
+
+ bool GetLinkChain( TChainLink& link, TChain& chain, SMDS_TypeOfPosition pos, int& err) const
+ {
+ int i = LinkIndex( link._qlink );
+ if ( i < 0 ) return true;
+ _sideIsAdded[i] = true;
+ link.SetFace( this );
+ // continue from opposite link
+ return GetLinkChain( (i+2)%_sides.size(), chain, pos, err );
+ }
+ bool IsBoundary() const { return !_volumes[1]; }
+
+ bool Contains( const SMDS_MeshNode* node ) const { return count(node); }
+
+ TLinkInSet GetBoundaryLink( const TLinkSet& links,
+ const TChainLink& avoidLink,
+ TLinkInSet * notBoundaryLink = 0,
+ const SMDS_MeshNode* nodeToContain = 0,
+ bool * isAdjacentUsed = 0,
+ int nbRecursionsLeft = -1) const;
+
+ TLinkInSet GetLinkByNode( const TLinkSet& links,
+ const TChainLink& avoidLink,
+ const SMDS_MeshNode* nodeToContain) const;
+
+ const SMDS_MeshNode* GetNodeInFace() const {
+ for ( int iL = 0; iL < _sides.size(); ++iL )
+ if ( _sides[iL]->MediumPos() == SMDS_TOP_FACE ) return _sides[iL]->_mediumNode;
+ return 0;
+ }
+
+ gp_Vec LinkNorm(const int i, SMESH_MesherHelper* theFaceHelper=0) const;
+
+ double MoveByBoundary( const TChainLink& theLink,
+ const gp_Vec& theRefVec,
+ const TLinkSet& theLinks,
+ SMESH_MesherHelper* theFaceHelper=0,
+ const double thePrevLen=0,
+ const int theStep=theFirstStep,
+ gp_Vec* theLinkNorm=0,
+ double theSign=1.0) const;
+ };
+
+ //================================================================================
+ /*!
+ * \brief Dump QLink and QFace
+ */
+ ostream& operator << (ostream& out, const QLink& l)
+ {
+ out <<"QLink nodes: "
+ << l.node1()->GetID() << " - "
+ << l._mediumNode->GetID() << " - "
+ << l.node2()->GetID() << endl;
+ return out;
+ }
+ ostream& operator << (ostream& out, const QFace& f)
+ {
+ out <<"QFace nodes: "/*<< &f << " "*/;
+ for ( TIDSortedElemSet::const_iterator n = f.begin(); n != f.end(); ++n )
+ out << (*n)->GetID() << " ";
+ out << " \tvolumes: "
+ << (f._volumes[0] ? f._volumes[0]->GetID() : 0) << " "
+ << (f._volumes[1] ? f._volumes[1]->GetID() : 0);
+ out << " \tNormal: "<< f._normal.X() <<", "<<f._normal.Y() <<", "<<f._normal.Z() << endl;
+ return out;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Construct QFace from QLinks
+ */
+ //================================================================================
+
+ QFace::QFace( const vector< const QLink*>& links, const SMDS_MeshElement* face )
+ {
+ _volumes[0] = _volumes[1] = 0;
+ _sides = links;
+ _sideIsAdded[0]=_sideIsAdded[1]=_sideIsAdded[2]=_sideIsAdded[3]=false;
+ _normal.SetCoord(0,0,0);
+ for ( int i = 1; i < _sides.size(); ++i ) {
+ const QLink *l1 = _sides[i-1], *l2 = _sides[i];
+ insert( l1->node1() ); insert( l1->node2() );
+ // compute normal
+ gp_Vec v1( XYZ( l1->node2()), XYZ( l1->node1()));
+ gp_Vec v2( XYZ( l2->node1()), XYZ( l2->node2()));
+ if ( l1->node1() != l2->node1() && l1->node2() != l2->node2() )
+ v1.Reverse();
+ _normal += v1 ^ v2;
+ }
+ double normSqSize = _normal.SquareMagnitude();
+ if ( normSqSize > numeric_limits<double>::min() )
+ _normal /= sqrt( normSqSize );
+ else
+ _normal.SetCoord(1e-33,0,0);
+
+#ifdef _DEBUG_
+ _face = face;
+#endif
+ }
+ //================================================================================
+ /*!
+ * \brief Make up a chain of links
+ * \param iSide - link to add first
+ * \param chain - chain to fill in
+ * \param pos - postion of medium nodes the links should have
+ * \param error - out, specifies what is wrong
+ * \retval bool - false if valid chain can't be built; "valid" means that links
+ * of the chain belongs to rectangles bounding hexahedrons
+ */
+ //================================================================================
+
+ bool QFace::GetLinkChain( int iSide, TChain& chain, SMDS_TypeOfPosition pos, int& error) const
+ {
+ if ( iSide >= _sides.size() ) // wrong argument iSide
+ return false;
+ if ( _sideIsAdded[ iSide ]) // already in chain
+ return true;
+
+ if ( _sides.size() != 4 ) { // triangle - visit all my continous faces
+ MSGBEG( *this );
+ TLinkSet links;
+ list< const QFace* > faces( 1, this );
+ while ( !faces.empty() ) {
+ const QFace* face = faces.front();
+ for ( int i = 0; i < face->_sides.size(); ++i ) {
+ if ( !face->_sideIsAdded[i] && face->_sides[i] ) {
+ face->_sideIsAdded[i] = true;
+ // find a face side in the chain
+ TLinkInSet chLink = links.insert( TChainLink(face->_sides[i])).first;
+// TChain::iterator chLink = chain.begin();
+// for ( ; chLink != chain.end(); ++chLink )
+// if ( chLink->_qlink == face->_sides[i] )
+// break;
+// if ( chLink == chain.end() )
+// chLink = chain.insert( chain.begin(), TChainLink(face->_sides[i]));
+ // add a face to a chained link and put a continues face in the queue
+ chLink->SetFace( face );
+ if ( face->_sides[i]->MediumPos() >= pos )
+ if ( const QFace* contFace = face->_sides[i]->GetContinuesFace( face ))
+ faces.push_back( contFace );
+ }
+ }
+ faces.pop_front();
+ }
+ if ( error < ERR_TRI )
+ error = ERR_TRI;
+ chain.insert( chain.end(), links.begin(),links.end() );
+ return false;
+ }
+ _sideIsAdded[iSide] = true; // not to add this link to chain again
+ const QLink* link = _sides[iSide];
+ if ( !link)
+ return true;
+
+ // add link into chain
+ TChain::iterator chLink = chain.insert( chain.begin(), TChainLink(link));
+ chLink->SetFace( this );
+ MSGBEG( *this );
+
+ // propagate from quadrangle to neighbour faces
+ if ( link->MediumPos() >= pos ) {
+ int nbLinkFaces = link->_faces.size();
+ if ( nbLinkFaces == 4 || nbLinkFaces < 4 && link->OnBoundary()) {
+ // hexahedral mesh or boundary quadrangles - goto a continous face
+ if ( const QFace* f = link->GetContinuesFace( this ))
+ return f->GetLinkChain( *chLink, chain, pos, error );
+ }
+ else {
+ TChainLink chLink(link); // side face of prismatic mesh - visit all faces of iSide
+ for ( int i = 0; i < nbLinkFaces; ++i )
+ if ( link->_faces[i] )
+ link->_faces[i]->GetLinkChain( chLink, chain, pos, error );
+ if ( error < ERR_PRISM )
+ error = ERR_PRISM;
+ return false;
+ }
+ }
+ return true;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Return a boundary link of the triangle face
+ * \param links - set of all links
+ * \param avoidLink - link not to return
+ * \param notBoundaryLink - out, neither the returned link nor avoidLink
+ * \param nodeToContain - node the returned link must contain; if provided, search
+ * also performed on adjacent faces
+ * \param isAdjacentUsed - returns true if link is found in adjacent faces
+ * \param nbRecursionsLeft - to limit recursion
+ */
+ //================================================================================
+
+ TLinkInSet QFace::GetBoundaryLink( const TLinkSet& links,
+ const TChainLink& avoidLink,
+ TLinkInSet * notBoundaryLink,
+ const SMDS_MeshNode* nodeToContain,
+ bool * isAdjacentUsed,
+ int nbRecursionsLeft) const
+ {
+ TLinkInSet linksEnd = links.end(), boundaryLink = linksEnd;
+
+ typedef list< pair< const QFace*, TLinkInSet > > TFaceLinkList;
+ TFaceLinkList adjacentFaces;
+
+ for ( int iL = 0; iL < _sides.size(); ++iL )
+ {
+ if ( avoidLink._qlink == _sides[iL] )
+ continue;
+ TLinkInSet link = links.find( _sides[iL] );
+ if ( link == linksEnd ) continue;
+ if ( (*link)->MediumPos() > SMDS_TOP_FACE )
+ continue; // We work on faces here, don't go inside a solid
+
+ // check link
+ if ( link->IsBoundary() ) {
+ if ( !nodeToContain ||
+ (*link)->node1() == nodeToContain ||
+ (*link)->node2() == nodeToContain )
+ {
+ boundaryLink = link;
+ if ( !notBoundaryLink ) break;
+ }
+ }
+ else if ( notBoundaryLink ) {
+ *notBoundaryLink = link;
+ if ( boundaryLink != linksEnd ) break;
+ }
+
+ if ( boundaryLink == linksEnd && nodeToContain ) // collect adjacent faces
+ if ( const QFace* adj = link->NextFace( this ))
+ if ( adj->Contains( nodeToContain ))
+ adjacentFaces.push_back( make_pair( adj, link ));
+ }
+
+ if ( isAdjacentUsed ) *isAdjacentUsed = false;
+ if ( boundaryLink == linksEnd && nodeToContain && nbRecursionsLeft) // check adjacent faces
+ {
+ if ( nbRecursionsLeft < 0 )
+ nbRecursionsLeft = nodeToContain->NbInverseElements();
+ TFaceLinkList::iterator adj = adjacentFaces.begin();
+ for ( ; boundaryLink == linksEnd && adj != adjacentFaces.end(); ++adj )
+ boundaryLink = adj->first->GetBoundaryLink( links, *(adj->second), 0, nodeToContain,
+ isAdjacentUsed, nbRecursionsLeft-1);
+ if ( isAdjacentUsed ) *isAdjacentUsed = true;
+ }
+ return boundaryLink;
+ }
+ //================================================================================
+ /*!
+ * \brief Return a link ending at the given node but not avoidLink
+ */
+ //================================================================================
+
+ TLinkInSet QFace::GetLinkByNode( const TLinkSet& links,
+ const TChainLink& avoidLink,
+ const SMDS_MeshNode* nodeToContain) const
+ {
+ for ( int i = 0; i < _sides.size(); ++i )
+ if ( avoidLink._qlink != _sides[i] &&
+ (_sides[i]->node1() == nodeToContain || _sides[i]->node2() == nodeToContain ))
+ return links.find( _sides[ i ]);
+ return links.end();
+ }
+
+ //================================================================================
+ /*!
+ * \brief Return normal to the i-th side pointing outside the face
+ */
+ //================================================================================
+
+ gp_Vec QFace::LinkNorm(const int i, SMESH_MesherHelper* /*uvHelper*/) const
+ {
+ gp_Vec norm, vecOut;
+// if ( uvHelper ) {
+// TopoDS_Face face = TopoDS::Face( uvHelper->GetSubShape());
+// const SMDS_MeshNode* inFaceNode = uvHelper->GetNodeUVneedInFaceNode() ? GetNodeInFace() : 0;
+// gp_XY uv1 = uvHelper->GetNodeUV( face, _sides[i]->node1(), inFaceNode );
+// gp_XY uv2 = uvHelper->GetNodeUV( face, _sides[i]->node2(), inFaceNode );
+// norm.SetCoord( uv1.Y() - uv2.Y(), uv2.X() - uv1.X(), 0 );
+
+// const QLink* otherLink = _sides[(i + 1) % _sides.size()];
+// const SMDS_MeshNode* otherNode =
+// otherLink->node1() == _sides[i]->node1() ? otherLink->node2() : otherLink->node1();
+// gp_XY pIn = uvHelper->GetNodeUV( face, otherNode, inFaceNode );
+// vecOut.SetCoord( uv1.X() - pIn.X(), uv1.Y() - pIn.Y(), 0 );
+// }
+// else {
+ norm = _normal ^ gp_Vec( XYZ(_sides[i]->node1()), XYZ(_sides[i]->node2()));
+ gp_XYZ pIn = ( XYZ( _sides[0]->node1() ) +
+ XYZ( _sides[0]->node2() ) +
+ XYZ( _sides[1]->node1() )) / 3.;
+ vecOut.SetXYZ( _sides[i]->MiddlePnt() - pIn );
+ //}
+ if ( norm * vecOut < 0 )
+ norm.Reverse();
+ double mag2 = norm.SquareMagnitude();
+ if ( mag2 > numeric_limits<double>::min() )
+ norm /= sqrt( mag2 );
+ return norm;
+ }
+ //================================================================================
+ /*!
+ * \brief Move medium node of theLink according to its distance from boundary
+ * \param theLink - link to fix
+ * \param theRefVec - movement of boundary
+ * \param theLinks - all adjacent links of continous triangles
+ * \param theFaceHelper - helper is not used so far
+ * \param thePrevLen - distance from the boundary
+ * \param theStep - number of steps till movement propagation limit
+ * \param theLinkNorm - out normal to theLink
+ * \param theSign - 1 or -1 depending on movement of boundary
+ * \retval double - distance from boundary to propagation limit or other boundary
+ */
+ //================================================================================
+
+ double QFace::MoveByBoundary( const TChainLink& theLink,
+ const gp_Vec& theRefVec,
+ const TLinkSet& theLinks,
+ SMESH_MesherHelper* theFaceHelper,
+ const double thePrevLen,
+ const int theStep,
+ gp_Vec* theLinkNorm,
+ double theSign) const
+ {
+ if ( !theStep )
+ return thePrevLen; // propagation limit reached
+
+ int iL; // index of theLink
+ for ( iL = 0; iL < _sides.size(); ++iL )
+ if ( theLink._qlink == _sides[ iL ])
+ break;
+
+ MSG(string(theStep,'.')<<" Ref( "<<theRefVec.X()<<","<<theRefVec.Y()<<","<<theRefVec.Z()<<" )"
+ <<" thePrevLen " << thePrevLen);
+ MSG(string(theStep,'.')<<" "<<*theLink._qlink);
+
+ gp_Vec linkNorm = -LinkNorm( iL/*, theFaceHelper*/ ); // normal to theLink
+ double refProj = theRefVec * linkNorm; // project movement vector to normal of theLink
+ if ( theStep == theFirstStep )
+ theSign = refProj < 0. ? -1. : 1.;
+ else if ( theSign * refProj < 0.4 * theRefVec.Magnitude())
+ return thePrevLen; // to propagate movement forward only, not in side dir or backward
+
+ int iL1 = (iL + 1) % 3, iL2 = (iL + 2) % 3; // indices of the two other links of triangle
+ TLinkInSet link1 = theLinks.find( _sides[iL1] );
+ TLinkInSet link2 = theLinks.find( _sides[iL2] );
+ if ( link1 == theLinks.end() || link2 == theLinks.end() )
+ return thePrevLen;
+ const QFace* f1 = link1->NextFace( this ); // adjacent faces
+ const QFace* f2 = link2->NextFace( this );
+
+ // propagate to adjacent faces till limit step or boundary
+ double len1 = thePrevLen + (theLink->MiddlePnt() - _sides[iL1]->MiddlePnt()).Modulus();
+ double len2 = thePrevLen + (theLink->MiddlePnt() - _sides[iL2]->MiddlePnt()).Modulus();
+ gp_Vec linkDir1(0,0,0); // initialize to avoid valgrind error ("Conditional jump...")
+ gp_Vec linkDir2(0,0,0);
+ try {
+ OCC_CATCH_SIGNALS;
+ if ( f1 )
+ len1 = f1->MoveByBoundary
+ ( *link1, theRefVec, theLinks, theFaceHelper, len1, theStep-1, &linkDir1, theSign);
+ else
+ linkDir1 = LinkNorm( iL1/*, theFaceHelper*/ );
+ } catch (...) {
+ MSG( " --------------- EXCEPTION");
+ return thePrevLen;
+ }
+ try {
+ OCC_CATCH_SIGNALS;
+ if ( f2 )
+ len2 = f2->MoveByBoundary
+ ( *link2, theRefVec, theLinks, theFaceHelper, len2, theStep-1, &linkDir2, theSign);
+ else
+ linkDir2 = LinkNorm( iL2/*, theFaceHelper*/ );
+ } catch (...) {
+ MSG( " --------------- EXCEPTION");
+ return thePrevLen;
+ }
+
+ double fullLen = 0;
+ if ( theStep != theFirstStep )
+ {
+ // choose chain length by direction of propagation most codirected with theRefVec
+ bool choose1 = ( theRefVec * linkDir1 * theSign > theRefVec * linkDir2 * theSign );
+ fullLen = choose1 ? len1 : len2;
+ double r = thePrevLen / fullLen;
+
+ gp_Vec move = linkNorm * refProj * ( 1 - r );
+ theLink->Move( move, true );
+
+ MSG(string(theStep,'.')<<" Move "<< theLink->_mediumNode->GetID()<<
+ " by " << refProj * ( 1 - r ) << " following " <<
+ (choose1 ? *link1->_qlink : *link2->_qlink));
+
+ if ( theLinkNorm ) *theLinkNorm = linkNorm;
+ }
+ return fullLen;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Find pairs of continues faces
+ */
+ //================================================================================
+
+ void QLink::SetContinuesFaces() const
+ {
+ // x0 x - QLink, [-|] - QFace, v - volume
+ // v0 | v1
+ // | Between _faces of link x2 two vertical faces are continues
+ // x1----x2-----x3 and two horizontal faces are continues. We set vertical faces
+ // | to _faces[0] and _faces[1] and horizontal faces to
+ // v2 | v3 _faces[2] and _faces[3] (or vise versa).
+ // x4
+
+ if ( _faces.empty() )
+ return;
+ int iFaceCont = -1;
+ for ( int iF = 1; iFaceCont < 0 && iF < _faces.size(); ++iF )
+ {
+ // look for a face bounding none of volumes bound by _faces[0]
+ bool sameVol = false;
+ int nbVol = _faces[iF]->NbVolumes();
+ for ( int iV = 0; !sameVol && iV < nbVol; ++iV )
+ sameVol = ( _faces[iF]->_volumes[iV] == _faces[0]->_volumes[0] ||
+ _faces[iF]->_volumes[iV] == _faces[0]->_volumes[1]);
+ if ( !sameVol )
+ iFaceCont = iF;
+ }
+ if ( iFaceCont > 0 ) // continues faces found, set one by the other
+ {
+ if ( iFaceCont != 1 )
+ std::swap( _faces[1], _faces[iFaceCont] );
+ }
+ else if ( _faces.size() > 1 ) // not found, set NULL by the first face
+ {
+ _faces.insert( ++_faces.begin(), 0 );
+ }
+ }
+ //================================================================================
+ /*!
+ * \brief Return a face continues to the given one
+ */
+ //================================================================================
+
+ const QFace* QLink::GetContinuesFace( const QFace* face ) const
+ {
+ for ( int i = 0; i < _faces.size(); ++i ) {
+ if ( _faces[i] == face ) {
+ int iF = i < 2 ? 1-i : 5-i;
+ return iF < _faces.size() ? _faces[iF] : 0;
+ }
+ }
+ return 0;
+ }
+ //================================================================================
+ /*!
+ * \brief True if link is on mesh boundary
+ */
+ //================================================================================
+
+ bool QLink::OnBoundary() const
+ {
+ for ( int i = 0; i < _faces.size(); ++i )
+ if (_faces[i] && _faces[i]->IsBoundary()) return true;
+ return false;
+ }
+ //================================================================================
+ /*!
+ * \brief Return normal of link of the chain
+ */
+ //================================================================================
+
+ gp_Vec TChainLink::Normal() const {
+ gp_Vec norm;
+ if (_qfaces[0]) norm = _qfaces[0]->_normal;
+ if (_qfaces[1]) norm += _qfaces[1]->_normal;
+ return norm;
+ }
+ //================================================================================
+ /*!
+ * \brief Move medium nodes of vertical links of pentahedrons adjacent by side faces
+ */
+ //================================================================================
+
+ void fixPrism( TChain& allLinks )
+ {
+ // separate boundary links from internal ones
+ typedef set<const QLink*/*, QLink::PtrComparator*/> QLinkSet;
+ QLinkSet interLinks, bndLinks1, bndLink2;
+
+ bool isCurved = false;
+ for ( TChain::iterator lnk = allLinks.begin(); lnk != allLinks.end(); ++lnk ) {
+ if ( (*lnk)->OnBoundary() )
+ bndLinks1.insert( lnk->_qlink );
+ else
+ interLinks.insert( lnk->_qlink );
+ isCurved = isCurved || !(*lnk)->IsStraight();
+ }
+ if ( !isCurved )
+ return; // no need to move
+
+ QLinkSet *curBndLinks = &bndLinks1, *newBndLinks = &bndLink2;
+
+ while ( !interLinks.empty() && !curBndLinks->empty() )
+ {
+ // propagate movement from boundary links to connected internal links
+ QLinkSet::iterator bnd = curBndLinks->begin(), bndEnd = curBndLinks->end();
+ for ( ; bnd != bndEnd; ++bnd )
+ {
+ const QLink* bndLink = *bnd;
+ for ( int i = 0; i < bndLink->_faces.size(); ++i ) // loop on faces of bndLink
+ {
+ const QFace* face = bndLink->_faces[i]; // quadrange lateral face of a prism
+ if ( !face ) continue;
+ // find and move internal link opposite to bndLink within the face
+ int interInd = ( face->LinkIndex( bndLink ) + 2 ) % face->_sides.size();
+ const QLink* interLink = face->_sides[ interInd ];
+ QLinkSet::iterator pInterLink = interLinks.find( interLink );
+ if ( pInterLink == interLinks.end() ) continue; // not internal link
+ interLink->Move( bndLink->_nodeMove );
+ // treated internal links become new boundary ones
+ interLinks. erase( pInterLink );
+ newBndLinks->insert( interLink );
+ }
+ }
+ curBndLinks->clear();
+ std::swap( curBndLinks, newBndLinks );
+ }
+ }
+
+ //================================================================================
+ /*!
+ * \brief Fix links of continues triangles near curved boundary
+ */
+ //================================================================================
+
+ void fixTriaNearBoundary( TChain & allLinks, SMESH_MesherHelper& /*helper*/)
+ {
+ if ( allLinks.empty() ) return;
+
+ TLinkSet linkSet( allLinks.begin(), allLinks.end());
+ TLinkInSet linkIt = linkSet.begin(), linksEnd = linkSet.end();
+
+ // move in 2d if we are on geom face
+// TopoDS_Face face;
+// TopLoc_Location loc;
+// SMESH_MesherHelper faceHelper( *helper.GetMesh());
+// while ( linkIt->IsBoundary()) ++linkIt;
+// if ( linkIt == linksEnd ) return;
+// if ( (*linkIt)->MediumPos() == SMDS_TOP_FACE ) {
+// bool checkPos = true;
+// TopoDS_Shape f = helper.GetSubShapeByNode( (*linkIt)->_mediumNode, helper.GetMeshDS() );
+// if ( !f.IsNull() && f.ShapeType() == TopAbs_FACE ) {
+// face = TopoDS::Face( f );
+// helper.GetNodeUV( face, (*linkIt)->_mediumNode, 0, &checkPos);
+// if (checkPos)
+// face.Nullify();
+// else
+// faceHelper.SetSubShape( face );
+// }
+// }
+ for ( linkIt = linkSet.begin(); linkIt != linksEnd; ++linkIt)
+ {
+ if ( linkIt->IsBoundary() && !(*linkIt)->IsStraight() && linkIt->_qfaces[0])
+ {
+// if ( !face.IsNull() ) {
+// const SMDS_MeshNode* inFaceNode =
+// faceHelper.GetNodeUVneedInFaceNode() ? linkIt->_qfaces[0]->GetNodeInFace() : 0;
+// gp_XY uvm = helper.GetNodeUV( face, (*linkIt)->_mediumNode, inFaceNode );
+// gp_XY uv1 = helper.GetNodeUV( face, (*linkIt)->node1(), inFaceNode);
+// gp_XY uv2 = helper.GetNodeUV( face, (*linkIt)->node2(), inFaceNode);
+// gp_XY uvMove = uvm - helper.GetMiddleUV( BRep_Tool::Surface(face,loc), uv1, uv2);
+// gp_Vec move( uvMove.X(), uvMove.Y(), 0 );
+// linkIt->_qfaces[0]->MoveByBoundary( *linkIt, move, linkSet, &faceHelper );
+// }
+// else {
+ linkIt->_qfaces[0]->MoveByBoundary( *linkIt, (*linkIt)->_nodeMove, linkSet );
+ //}
+ }
+ }
+ }
+
+ //================================================================================
+ /*!
+ * \brief Detect rectangular structure of links and build chains from them
+ */
+ //================================================================================
+
+ enum TSplitTriaResult {
+ _OK, _NO_CORNERS, _FEW_ROWS, _MANY_ROWS, _NO_SIDELINK, _BAD_MIDQUAD, _NOT_RECT,
+ _NO_MIDQUAD, _NO_UPTRIA, _BAD_SET_SIZE, _BAD_CORNER, _BAD_START, _NO_BOTLINK, _TWISTED_CHAIN };
+
+ TSplitTriaResult splitTrianglesIntoChains( TChain & allLinks,
+ vector< TChain> & resultChains,
+ SMDS_TypeOfPosition pos )
+ {
+ // put links in the set and evalute number of result chains by number of boundary links
+ TLinkSet linkSet;
+ int nbBndLinks = 0;
+ for ( TChain::iterator lnk = allLinks.begin(); lnk != allLinks.end(); ++lnk ) {
+ linkSet.insert( *lnk );
+ nbBndLinks += lnk->IsBoundary();
+ }
+ resultChains.clear();
+ resultChains.reserve( nbBndLinks / 2 );
+
+ TLinkInSet linkIt, linksEnd = linkSet.end();
+
+ // find a boundary link with corner node; corner node has position pos-2
+ // i.e. SMDS_TOP_VERTEX for links on faces and SMDS_TOP_EDGE for
+ // links in volume
+ SMDS_TypeOfPosition cornerPos = SMDS_TypeOfPosition(pos-2);
+ const SMDS_MeshNode* corner = 0;
+ for ( linkIt = linkSet.begin(); linkIt != linksEnd; ++linkIt )
+ if ( linkIt->IsBoundary() && (corner = (*linkIt)->EndPosNode(cornerPos)))
+ break;
+ if ( !corner)
+ return _NO_CORNERS;
+
+ TLinkInSet startLink = linkIt;
+ const SMDS_MeshNode* startCorner = corner;
+ vector< TChain* > rowChains;
+ int iCol = 0;
+
+ while ( startLink != linksEnd) // loop on columns
+ {
+ // We suppose we have a rectangular structure like shown here. We have found a
+ // corner of the rectangle (startCorner) and a boundary link sharing
+ // |/ |/ | the startCorner (startLink). We are going to loop on rows of the
+ // --o---o---o structure making several chains at once. One chain (columnChain)
+ // |\ | /| starts at startLink and continues upward (we look at the structure
+ // \ | \ | / | from such point that startLink is on the bottom of the structure).
+ // \| \|/ | While going upward we also fill horizontal chains (rowChains) we
+ // --o---o---o encounter.
+ // /|\ |\ |
+ // / | \ | \ | startCorner
+ // | \| \|,'
+ // --o---o---o
+ // `.startLink
+
+ if ( resultChains.size() == nbBndLinks / 2 )
+ return _NOT_RECT;
+ resultChains.push_back( TChain() );
+ TChain& columnChain = resultChains.back();
+
+ TLinkInSet botLink = startLink; // current horizontal link to go up from
+ corner = startCorner; // current corner the botLink ends at
+ int iRow = 0;
+ while ( botLink != linksEnd ) // loop on rows
+ {
+ // add botLink to the columnChain
+ columnChain.push_back( *botLink );
+
+ const QFace* botTria = botLink->_qfaces[0]; // bottom triangle bound by botLink
+ if ( !botTria )
+ { // the column ends
+ if ( botLink == startLink )
+ return _TWISTED_CHAIN; // issue 0020951
+ linkSet.erase( botLink );
+ if ( iRow != rowChains.size() )
+ return _FEW_ROWS; // different nb of rows in columns
+ break;
+ }
+ // find the link dividing the quadrangle (midQuadLink) and vertical boundary
+ // link ending at <corner> (sideLink); there are two cases:
+ // 1) midQuadLink does not end at <corner>, then we easily find it by botTria,
+ // since midQuadLink is not at boundary while sideLink is.
+ // 2) midQuadLink ends at <corner>
+ bool isCase2;
+ TLinkInSet midQuadLink = linksEnd;
+ TLinkInSet sideLink = botTria->GetBoundaryLink( linkSet, *botLink, &midQuadLink,
+ corner, &isCase2 );
+ if ( isCase2 ) { // find midQuadLink among links of botTria
+ midQuadLink = botTria->GetLinkByNode( linkSet, *botLink, corner );
+ if ( midQuadLink->IsBoundary() )
+ return _BAD_MIDQUAD;
+ }
+ if ( sideLink == linksEnd || midQuadLink == linksEnd || sideLink == midQuadLink )
+ return sideLink == linksEnd ? _NO_SIDELINK : _NO_MIDQUAD;
+
+ // fill chains
+ columnChain.push_back( *midQuadLink );
+ if ( iRow >= rowChains.size() ) {
+ if ( iCol > 0 )
+ return _MANY_ROWS; // different nb of rows in columns
+ if ( resultChains.size() == nbBndLinks / 2 )
+ return _NOT_RECT;
+ resultChains.push_back( TChain() );
+ rowChains.push_back( & resultChains.back() );
+ }
+ rowChains[iRow]->push_back( *sideLink );
+ rowChains[iRow]->push_back( *midQuadLink );
+
+ const QFace* upTria = midQuadLink->NextFace( botTria ); // upper tria of the rectangle
+ if ( !upTria)
+ return _NO_UPTRIA;
+ if ( iRow == 0 ) {
+ // prepare startCorner and startLink for the next column
+ startCorner = startLink->NextNode( startCorner );
+ if (isCase2)
+ startLink = botTria->GetBoundaryLink( linkSet, *botLink, 0, startCorner );
+ else
+ startLink = upTria->GetBoundaryLink( linkSet, *midQuadLink, 0, startCorner );
+ // check if no more columns remains
+ if ( startLink != linksEnd ) {
+ const SMDS_MeshNode* botNode = startLink->NextNode( startCorner );
+ if ( (isCase2 ? botTria : upTria)->Contains( botNode ))
+ startLink = linksEnd; // startLink bounds upTria or botTria
+ else if ( startLink == botLink || startLink == midQuadLink || startLink == sideLink )
+ return _BAD_START;
+ }
+ }
+ // find bottom link and corner for the next row
+ corner = sideLink->NextNode( corner );
+ // next bottom link ends at the new corner
+ linkSet.erase( botLink );
+ botLink = upTria->GetLinkByNode( linkSet, (isCase2 ? *sideLink : *midQuadLink), corner );
+ if ( botLink == linksEnd || botLink == midQuadLink || botLink == sideLink)
+ return _NO_BOTLINK;
+ if ( midQuadLink == startLink || sideLink == startLink )
+ return _TWISTED_CHAIN; // issue 0020951
+ linkSet.erase( midQuadLink );
+ linkSet.erase( sideLink );
+
+ // make faces neighboring the found ones be boundary
+ if ( startLink != linksEnd ) {
+ const QFace* tria = isCase2 ? botTria : upTria;
+ for ( int iL = 0; iL < 3; ++iL ) {
+ linkIt = linkSet.find( tria->_sides[iL] );
+ if ( linkIt != linksEnd )
+ linkIt->RemoveFace( tria );
+ }
+ }
+ if ( botLink->_qfaces[0] == upTria || botLink->_qfaces[1] == upTria )
+ botLink->RemoveFace( upTria ); // make next botTria first in vector
+
+ iRow++;
+ } // loop on rows
+
+ iCol++;
+ }
+ // In the linkSet, there must remain the last links of rowChains; add them
+ if ( linkSet.size() != rowChains.size() )
+ return _BAD_SET_SIZE;
+ for ( int iRow = 0; iRow < rowChains.size(); ++iRow ) {
+ // find the link (startLink) ending at startCorner
+ corner = 0;
+ for ( startLink = linkSet.begin(); startLink != linksEnd; ++startLink ) {
+ if ( (*startLink)->node1() == startCorner ) {
+ corner = (*startLink)->node2(); break;
+ }
+ else if ( (*startLink)->node2() == startCorner) {
+ corner = (*startLink)->node1(); break;
+ }
+ }
+ if ( startLink == linksEnd )
+ return _BAD_CORNER;
+ rowChains[ iRow ]->push_back( *startLink );
+ linkSet.erase( startLink );
+ startCorner = corner;
+ }
+
+ return _OK;
+ }
+} //namespace
+
+//=======================================================================
+/*!
+ * \brief Move medium nodes of faces and volumes to fix distorted elements
+ * \param volumeOnly - to fix nodes on faces or not, if the shape is solid
+ *
+ * Issue 0020307: EDF 992 SMESH : Linea/Quadratic with Medium Node on Geometry
+ */
+//=======================================================================
+
+void SMESH_MesherHelper::FixQuadraticElements(bool volumeOnly)
+{
+ // 0. Apply algorithm to solids or geom faces
+ // ----------------------------------------------
+ if ( myShape.IsNull() ) {
+ if ( !myMesh->HasShapeToMesh() ) return;
+ SetSubShape( myMesh->GetShapeToMesh() );
+
+#ifdef _DEBUG_
+ int nbSolids = 0;
+ TopTools_IndexedMapOfShape solids;
+ TopExp::MapShapes(myShape,TopAbs_SOLID,solids);
+ nbSolids = solids.Extent();
+#endif
+ TopTools_MapOfShape faces; // faces not in solid or in not meshed solid
+ for ( TopExp_Explorer f(myShape,TopAbs_FACE,TopAbs_SOLID); f.More(); f.Next() ) {
+ faces.Add( f.Current() ); // not in solid
+ }
+ for ( TopExp_Explorer s(myShape,TopAbs_SOLID); s.More(); s.Next() ) {
+ if ( myMesh->GetSubMesh( s.Current() )->IsEmpty() ) { // get faces of solid
+ for ( TopExp_Explorer f( s.Current(), TopAbs_FACE); f.More(); f.Next() )
+ faces.Add( f.Current() ); // in not meshed solid
+ }
+ else { // fix nodes in the solid and its faces
+ MSG("FIX SOLID " << nbSolids-- << " #" << GetMeshDS()->ShapeToIndex(s.Current()));
+ SMESH_MesherHelper h(*myMesh);
+ h.SetSubShape( s.Current() );
+ h.FixQuadraticElements(false);
+ }
+ }
+ // fix nodes on geom faces
+#ifdef _DEBUG_
+ int nbfaces = faces.Extent();
+#endif
+ for ( TopTools_MapIteratorOfMapOfShape fIt( faces ); fIt.More(); fIt.Next() ) {
+ MSG("FIX FACE " << nbfaces-- << " #" << GetMeshDS()->ShapeToIndex(fIt.Key()));
+ SMESH_MesherHelper h(*myMesh);
+ h.SetSubShape( fIt.Key() );
+ h.FixQuadraticElements(true);
+ }
+ //perf_print_all_meters(1);
+ return;
+ }
+
+ // 1. Find out type of elements and get iterator on them
+ // ---------------------------------------------------
+
+ SMDS_ElemIteratorPtr elemIt;
+ SMDSAbs_ElementType elemType = SMDSAbs_All;
+
+ SMESH_subMesh* submesh = myMesh->GetSubMeshContaining( myShapeID );
+ if ( !submesh )
+ return;
+ if ( SMESHDS_SubMesh* smDS = submesh->GetSubMeshDS() ) {
+ elemIt = smDS->GetElements();
+ if ( elemIt->more() ) {
+ elemType = elemIt->next()->GetType();
+ elemIt = smDS->GetElements();
+ }
+ }
+ if ( !elemIt || !elemIt->more() || elemType < SMDSAbs_Face )
+ return;
+
+ // 2. Fill in auxiliary data structures
+ // ----------------------------------
+
+ set< QLink > links;
+ set< QFace > faces;
+ set< QLink >::iterator pLink;
+ set< QFace >::iterator pFace;
+
+ bool isCurved = false;
+ //bool hasRectFaces = false;
+ set<int> nbElemNodeSet;
+
+ if ( elemType == SMDSAbs_Volume )
+ {
+ SMDS_VolumeTool volTool;
+ while ( elemIt->more() ) // loop on volumes
+ {
+ const SMDS_MeshElement* vol = elemIt->next();
+ if ( !vol->IsQuadratic() || !volTool.Set( vol ))
+ return; //continue;
+ for ( int iF = 0; iF < volTool.NbFaces(); ++iF ) // loop on faces of volume
+ {
+ int nbN = volTool.NbFaceNodes( iF );
+ nbElemNodeSet.insert( nbN );
+ const SMDS_MeshNode** faceNodes = volTool.GetFaceNodes( iF );
+ vector< const QLink* > faceLinks( nbN/2 );
+ for ( int iN = 0; iN < nbN; iN += 2 ) // loop on links of a face
+ {
+ // store QLink
+ QLink link( faceNodes[iN], faceNodes[iN+2], faceNodes[iN+1] );
+ pLink = links.insert( link ).first;
+ faceLinks[ iN/2 ] = & *pLink;
+ if ( !isCurved )
+ isCurved = !link.IsStraight();
+ if ( link.MediumPos() == SMDS_TOP_3DSPACE && !link.IsStraight() )
+ return; // already fixed
+ }
+ // store QFace
+ pFace = faces.insert( QFace( faceLinks )).first;
+ if ( pFace->NbVolumes() == 0 )
+ pFace->AddSelfToLinks();
+ pFace->SetVolume( vol );
+// hasRectFaces = hasRectFaces ||
+// ( volTool.GetVolumeType() == SMDS_VolumeTool::QUAD_HEXA ||
+// volTool.GetVolumeType() == SMDS_VolumeTool::QUAD_PENTA );
+#ifdef _DEBUG_
+ if ( nbN == 6 )
+ pFace->_face = GetMeshDS()->FindFace(faceNodes[0],faceNodes[2],faceNodes[4]);
+ else
+ pFace->_face = GetMeshDS()->FindFace(faceNodes[0],faceNodes[2],
+ faceNodes[4],faceNodes[6] );
+#endif
+ }
+ }
+ set< QLink >::iterator pLink = links.begin();
+ for ( ; pLink != links.end(); ++pLink )
+ pLink->SetContinuesFaces();
+ }
+ else
+ {
+ while ( elemIt->more() ) // loop on faces
+ {
+ const SMDS_MeshElement* face = elemIt->next();
+ if ( !face->IsQuadratic() )
+ continue;
+ nbElemNodeSet.insert( face->NbNodes() );
+ int nbN = face->NbNodes()/2;
+ vector< const QLink* > faceLinks( nbN );
+ for ( int iN = 0; iN < nbN; ++iN ) // loop on links of a face
+ {
+ // store QLink
+ QLink link( face->GetNode(iN), face->GetNode((iN+1)%nbN), face->GetNode(iN+nbN) );
+ pLink = links.insert( link ).first;
+ faceLinks[ iN ] = & *pLink;
+ if ( !isCurved )
+ isCurved = !link.IsStraight();
+ }
+ // store QFace
+ pFace = faces.insert( QFace( faceLinks )).first;
+ pFace->AddSelfToLinks();
+ //hasRectFaces = ( hasRectFaces || nbN == 4 );
+ }
+ }
+ if ( !isCurved )
+ return; // no curved edges of faces
+
+ // 3. Compute displacement of medium nodes
+ // -------------------------------------
+
+ // two loops on faces: the first is to treat boundary links, the second is for internal ones
+ TopLoc_Location loc;
+ // not treat boundary of volumic submesh
+ int isInside = ( elemType == SMDSAbs_Volume && volumeOnly ) ? 1 : 0;
+ for ( ; isInside < 2; ++isInside ) {
+ MSG( "--------------- LOOP (inside=" << isInside << ") ------------------");
+ SMDS_TypeOfPosition pos = isInside ? SMDS_TOP_3DSPACE : SMDS_TOP_FACE;
+ SMDS_TypeOfPosition bndPos = isInside ? SMDS_TOP_FACE : SMDS_TOP_EDGE;
+
+ for ( pFace = faces.begin(); pFace != faces.end(); ++pFace ) {
+ if ( bool(isInside) == pFace->IsBoundary() )
+ continue;
+ for ( int dir = 0; dir < 2; ++dir ) // 2 directions of propagation from quadrangle
+ {
+ MSG( "CHAIN");
+ // make chain of links connected via continues faces
+ int error = ERR_OK;
+ TChain rawChain;
+ if ( !pFace->GetLinkChain( dir, rawChain, pos, error) && error ==ERR_UNKNOWN ) continue;
+ rawChain.reverse();
+ if ( !pFace->GetLinkChain( dir+2, rawChain, pos, error ) && error ==ERR_UNKNOWN ) continue;
+
+ vector< TChain > chains;
+ if ( error == ERR_OK ) { // chain contains continues rectangles
+ chains.resize(1);
+ chains[0].splice( chains[0].begin(), rawChain );
+ }
+ else if ( error == ERR_TRI ) { // chain contains continues triangles
+ TSplitTriaResult res = splitTrianglesIntoChains( rawChain, chains, pos );
+ if ( res != _OK ) { // not quadrangles split into triangles
+ fixTriaNearBoundary( rawChain, *this );
+ break;
+ }
+ }
+ else if ( error == ERR_PRISM ) { // quadrangle side faces of prisms
+ fixPrism( rawChain );
+ break;
+ }
+ else {
+ continue;
+ }
+ for ( int iC = 0; iC < chains.size(); ++iC )
+ {
+ TChain& chain = chains[iC];
+ if ( chain.empty() ) continue;
+ if ( chain.front()->IsStraight() && chain.back()->IsStraight() ) {
+ MSG("3D straight - ignore");
+ continue;
+ }
+ if ( chain.front()->MediumPos() > bndPos ||
+ chain.back()->MediumPos() > bndPos ) {
+ MSG("Internal chain - ignore");
+ continue;
+ }
+ // mesure chain length and compute link position along the chain
+ double chainLen = 0;
+ vector< double > linkPos;
+ MSGBEG( "Link medium nodes: ");
+ TChain::iterator link0 = chain.begin(), link1 = chain.begin(), link2;
+ for ( ++link1; link1 != chain.end(); ++link1, ++link0 ) {
+ MSGBEG( (*link0)->_mediumNode->GetID() << "-" <<(*link1)->_mediumNode->GetID()<<" ");
+ double len = ((*link0)->MiddlePnt() - (*link1)->MiddlePnt()).Modulus();
+ while ( len < numeric_limits<double>::min() ) { // remove degenerated link
+ link1 = chain.erase( link1 );
+ if ( link1 == chain.end() )
+ break;
+ len = ((*link0)->MiddlePnt() - (*link1)->MiddlePnt()).Modulus();
+ }
+ chainLen += len;
+ linkPos.push_back( chainLen );
+ }
+ MSG("");
+ if ( linkPos.size() < 2 )
+ continue;
+
+ gp_Vec move0 = chain.front()->_nodeMove;
+ gp_Vec move1 = chain.back ()->_nodeMove;
+
+ TopoDS_Face face;
+ bool checkUV = true;
+ if ( !isInside ) {
+ // compute node displacement of end links in parametric space of face
+ const SMDS_MeshNode* nodeOnFace = (*(++chain.begin()))->_mediumNode;
+ TopoDS_Shape f = GetSubShapeByNode( nodeOnFace, GetMeshDS() );
+ if ( !f.IsNull() && f.ShapeType() == TopAbs_FACE )
+ {
+ face = TopoDS::Face( f );
+ Handle(Geom_Surface) surf = BRep_Tool::Surface(face,loc);
+ bool isStraight[2];
+ for ( int is1 = 0; is1 < 2; ++is1 ) // move0 or move1
+ {
+ TChainLink& link = is1 ? chain.back() : chain.front();
+ gp_XY uvm = GetNodeUV( face, link->_mediumNode, nodeOnFace, &checkUV);
+ gp_XY uv1 = GetNodeUV( face, link->node1(), nodeOnFace, &checkUV);
+ gp_XY uv2 = GetNodeUV( face, link->node2(), nodeOnFace, &checkUV);
+ gp_XY uv12 = GetMiddleUV( surf, uv1, uv2);
+ // uvMove = uvm - uv12
+ gp_XY uvMove = applyIn2D(surf, uvm, uv12, gp_XY_Subtracted, /*inPeriod=*/false);
+ ( is1 ? move1 : move0 ).SetCoord( uvMove.X(), uvMove.Y(), 0 );
+ if ( !is1 ) // correct nodeOnFace for move1 (issue 0020919)
+ nodeOnFace = (*(++chain.rbegin()))->_mediumNode;
+ isStraight[is1] = isStraightLink( (uv2-uv1).SquareModulus(),uvMove.SquareModulus());
+ }
+// if ( move0.SquareMagnitude() < straightTol2 &&
+// move1.SquareMagnitude() < straightTol2 ) {
+ if ( isStraight[0] && isStraight[1] ) {
+ MSG("2D straight - ignore");
+ continue; // straight - no need to move nodes of internal links
+ }
+ }
+ }
+ gp_Trsf trsf;
+ if ( isInside || face.IsNull() )
+ {
+ // compute node displacement of end links in their local coord systems
+ {
+ TChainLink& ln0 = chain.front(), ln1 = *(++chain.begin());
+ trsf.SetTransformation( gp_Ax3( gp::Origin(), ln0.Normal(),
+ gp_Vec( ln0->MiddlePnt(), ln1->MiddlePnt() )));
+ move0.Transform(trsf);
+ }
+ {
+ TChainLink& ln0 = *(++chain.rbegin()), ln1 = chain.back();
+ trsf.SetTransformation( gp_Ax3( gp::Origin(), ln1.Normal(),
+ gp_Vec( ln0->MiddlePnt(), ln1->MiddlePnt() )));
+ move1.Transform(trsf);
+ }
+ }
+ // compute displacement of medium nodes
+ link2 = chain.begin();
+ link0 = link2++;
+ link1 = link2++;
+ for ( int i = 0; link2 != chain.end(); ++link0, ++link1, ++link2, ++i )
+ {
+ double r = linkPos[i] / chainLen;
+ // displacement in local coord system
+ gp_Vec move = (1. - r) * move0 + r * move1;
+ if ( isInside || face.IsNull()) {
+ // transform to global
+ gp_Vec x01( (*link0)->MiddlePnt(), (*link1)->MiddlePnt() );
+ gp_Vec x12( (*link1)->MiddlePnt(), (*link2)->MiddlePnt() );
+ gp_Vec x = x01.Normalized() + x12.Normalized();
+ trsf.SetTransformation( gp_Ax3( gp::Origin(), link1->Normal(), x), gp_Ax3() );
+ move.Transform(trsf);
+ }
+ else {
+ // compute 3D displacement by 2D one
+ Handle(Geom_Surface) s = BRep_Tool::Surface(face,loc);
+ gp_XY oldUV = GetNodeUV( face, (*link1)->_mediumNode, 0, &checkUV);
+ gp_XY newUV = applyIn2D( s, oldUV, gp_XY( move.X(),move.Y()), gp_XY_Added);
+ gp_Pnt newPnt = s->Value( newUV.X(), newUV.Y());
+ move = gp_Vec( XYZ((*link1)->_mediumNode), newPnt.Transformed(loc) );
+#ifdef _DEBUG_
+ if ( (XYZ((*link1)->node1()) - XYZ((*link1)->node2())).SquareModulus() <
+ move.SquareMagnitude())
+ {
+ gp_XY uv0 = GetNodeUV( face, (*link0)->_mediumNode, 0, &checkUV);
+ gp_XY uv2 = GetNodeUV( face, (*link2)->_mediumNode, 0, &checkUV);
+ MSG( "TOO LONG MOVE \t" <<
+ "uv0: "<<uv0.X()<<", "<<uv0.Y()<<" \t" <<
+ "uv2: "<<uv2.X()<<", "<<uv2.Y()<<" \t" <<
+ "uvOld: "<<oldUV.X()<<", "<<oldUV.Y()<<" \t" <<
+ "newUV: "<<newUV.X()<<", "<<newUV.Y()<<" \t");
+ }
+#endif
+ }
+ (*link1)->Move( move );
+ MSG( "Move " << (*link1)->_mediumNode->GetID() << " following "
+ << chain.front()->_mediumNode->GetID() <<"-"
+ << chain.back ()->_mediumNode->GetID() <<
+ " by " << move.Magnitude());
+ }
+ } // loop on chains of links
+ } // loop on 2 directions of propagation from quadrangle
+ } // loop on faces
+ }
+
+ // 4. Move nodes
+ // -----------
+
+ for ( pLink = links.begin(); pLink != links.end(); ++pLink ) {
+ if ( pLink->IsMoved() ) {
+ //gp_Pnt p = pLink->MediumPnt() + pLink->Move();
+ gp_Pnt p = pLink->MiddlePnt() + pLink->Move();
+ GetMeshDS()->MoveNode( pLink->_mediumNode, p.X(), p.Y(), p.Z());
+ }
+ }
+}
+
+//=======================================================================
+/*!
+ * \brief Iterator on ancestors of the given type
+ */
+//=======================================================================
+
+struct TAncestorsIterator : public SMDS_Iterator<const TopoDS_Shape*>
+{
+ TopTools_ListIteratorOfListOfShape _ancIter;
+ TopAbs_ShapeEnum _type;
+ TAncestorsIterator( const TopTools_ListOfShape& ancestors, TopAbs_ShapeEnum type)
+ : _ancIter( ancestors ), _type( type )
+ {
+ if ( _ancIter.More() && _ancIter.Value().ShapeType() != _type ) next();
+ }
+ virtual bool more()
+ {
+ return _ancIter.More();
+ }
+ virtual const TopoDS_Shape* next()
+ {
+ const TopoDS_Shape* s = _ancIter.More() ? & _ancIter.Value() : 0;
+ if ( _ancIter.More() )
+ for ( _ancIter.Next(); _ancIter.More(); _ancIter.Next())
+ if ( _ancIter.Value().ShapeType() == _type )
+ break;
+ return s;
+ }
+};
+
+//=======================================================================
+/*!
+ * \brief Return iterator on ancestors of the given type
+ */
+//=======================================================================
+
+PShapeIteratorPtr SMESH_MesherHelper::GetAncestors(const TopoDS_Shape& shape,
+ const SMESH_Mesh& mesh,
+ TopAbs_ShapeEnum ancestorType)
+{
+ return PShapeIteratorPtr( new TAncestorsIterator( mesh.GetAncestors(shape), ancestorType));
+}
