// 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/
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File: SMESH_MesherHelper.cxx
// Created: 15.02.06 15:22:41
#include <Geom2d_Curve.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_MapOfShape.hxx>
+#include <TopoDS.hxx>
#include <gp_Pnt2d.hxx>
-#include <ShapeAnalysis.hxx>
+
+#include <Standard_Failure.hxx>
+#include <Standard_ErrorHandler.hxx>
+
+#include <utilities.h>
+
+#define RETURN_BAD_RESULT(msg) { MESSAGE(msg); return false; }
+
+//================================================================================
+/*!
+ * \brief Constructor
+ */
+//================================================================================
+
+SMESH_MesherHelper::SMESH_MesherHelper(SMESH_Mesh& theMesh)
+ : myMesh(&theMesh), myShapeID(-1), myCreateQuadratic(false)
+{
+ mySetElemOnShape = ( ! myMesh->HasShapeToMesh() );
+}
//=======================================================================
//function : CheckShape
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
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 );
if(!myCreateQuadratic) {
myNLinkNodeMap.clear();
}
- else {
- SetSubShape( aSh );
- }
+ SetSubShape( aSh );
+
return myCreateQuadratic;
}
if ( aShID == myShapeID )
return;
if ( aShID > 1 )
- SetSubShape( GetMesh()->GetMeshDS()->IndexToShape( aShID ));
+ SetSubShape( GetMeshDS()->IndexToShape( aShID ));
else
SetSubShape( TopoDS_Shape() );
}
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;
return;
}
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh* meshDS = GetMeshDS();
myShapeID = meshDS->ShapeToIndex(aSh);
// 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
}
}
// 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( edge ));
+ for ( TopExp_Explorer v( edge, 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() ));
+ }
}
}
}
gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F,
const SMDS_MeshNode* n,
- const SMDS_MeshNode* n2)
+ const SMDS_MeshNode* n2) const
{
- gp_Pnt2d uv;
+ gp_Pnt2d uv( 1e100, 1e100 );
const SMDS_PositionPtr Pos = n->GetPosition();
- if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE) {
+ 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());
}
- 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
const SMDS_EdgePosition* epos =
static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh* meshDS = GetMeshDS();
int edgeID = Pos->GetShapeId();
TopoDS_Edge E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
double f, l;
if ( n2 && mySeamShapeIds.find( edgeID ) != mySeamShapeIds.end() )
uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
}
- 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() ) {
+ bool ok = true;
+ const TopoDS_Vertex& V = TopoDS::Vertex(GetMeshDS()->IndexToShape(vertexID));
+ try {
+ uv = BRep_Tool::Parameters( V, F );
+ }
+ catch (Standard_Failure& exc) {
+ ok = false;
+ }
+ if ( !ok ) {
+ for ( TopExp_Explorer vert(F,TopAbs_VERTEX); !ok && vert.More(); vert.Next() )
+ ok = ( V == vert.Current() );
+ if ( !ok ) {
+#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 ( n->X(),n->Y(),n->Z() );
+ for ( TopExp_Explorer vert(F,TopAbs_VERTEX); !ok && 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 );
+ if ( dist < DBL_MIN ) break;
+ }
+ }
+ }
+ else {
+ 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 );
+ break;
+ }
+ }
+ }
+ }
+ }
+ if ( n2 && mySeamShapeIds.find( vertexID ) != mySeamShapeIds.end() )
+ uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
+ }
}
return uv.XY();
}
param = epos->GetUParameter();
}
else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX) {
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh * meshDS = GetMeshDS();
int vertexID = n->GetPosition()->GetShapeId();
const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
param = BRep_Tool::Parameter( V, E );
else {
// create medium node
SMDS_MeshNode* n12;
- SMESHDS_Mesh* meshDS = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh* meshDS = GetMeshDS();
int faceID = -1, edgeID = -1;
const SMDS_PositionPtr Pos1 = n1->GetPosition();
const SMDS_PositionPtr Pos2 = n2->GetPosition();
}
//=======================================================================
-//function : AddQuadraticEdge
-//purpose :
+/*!
+ * Creates a node
+ */
//=======================================================================
-/**
- * Special function for creation quadratic edge
+
+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;
+}
+
+//=======================================================================
+/*!
+ * Creates quadratic or linear edge
*/
-SMDS_QuadraticEdge* SMESH_MesherHelper::AddQuadraticEdge(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const int id,
- const bool force3d)
+//=======================================================================
+
+SMDS_MeshEdge* SMESH_MesherHelper::AddEdge(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const int id,
+ const bool force3d)
{
- SMESHDS_Mesh * meshDS = GetMesh()->GetMeshDS();
-
- const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
+ SMESHDS_Mesh * meshDS = GetMeshDS();
- myCreateQuadratic = true;
+ 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(id)
- return (SMDS_QuadraticEdge*)(meshDS->AddEdgeWithID(n1, n2, n12, id));
- else
- return (SMDS_QuadraticEdge*)(meshDS->AddEdge(n1, n2, n12));
+ if ( mySetElemOnShape && myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( edge, myShapeID );
+
+ return edge;
}
-//=======================================================================
-//function : AddFace
-//purpose :
//=======================================================================
/*!
- * Special function for creation quadratic triangle
+ * 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 = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshFace* elem = 0;
if(!myCreateQuadratic) {
if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, id);
+ elem = meshDS->AddFaceWithID(n1, n2, n3, id);
else
- return meshDS->AddFace(n1, n2, n3);
+ 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);
- 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 );
- if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, n12, n23, n31, id);
- else
- return meshDS->AddFace(n1, n2, n3, n12, n23, n31);
+ return elem;
}
-
-//=======================================================================
-//function : AddFace
-//purpose :
//=======================================================================
/*!
- * Special function for creation quadratic quadrangle
+ * Creates quadratic or linear quadrangle
*/
+//=======================================================================
+
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 = GetMesh()->GetMeshDS();
+ SMESHDS_Mesh * meshDS = GetMeshDS();
+ SMDS_MeshFace* elem = 0;
if(!myCreateQuadratic) {
if(id)
- return meshDS->AddFaceWithID(n1, n2, n3, n4, id);
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n4, id);
else
- return meshDS->AddFace(n1, n2, n3, n4);
+ 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);
- 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 );
- 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);
+ return elem;
}
-
-//=======================================================================
-//function : AddVolume
-//purpose :
//=======================================================================
/*!
- * Special function for creation quadratic volume
+ * Creates quadratic or linear volume
*/
+//=======================================================================
+
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const int id,
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, id);
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, id);
else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6);
+ 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* 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* 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);
- 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 );
- 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);
+ return elem;
}
-
-//=======================================================================
-//function : AddVolume
-//purpose :
//=======================================================================
/*!
- * Special function for creation quadratic volume
+ * Creates quadratic or linear volume
*/
+//=======================================================================
+
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const int id,
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;
+}
+
//=======================================================================
/*!
- * Special function for creation quadratic volume
+ * Creates quadratic or linear hexahedron
*/
+//=======================================================================
+
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const int id,
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* 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* 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* 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* 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);
+ 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 );
- 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);
- else
- return meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
- n12, n23, n34, n41, n56, n67,
- n78, n85, n15, n26, n37, n48);
+ return elem;
+}
+
+//=======================================================================
+ /*!
+ * \brief Load nodes bound to face into a map of node columns
+ * \param theParam2ColumnMap - map of node columns to fill
+ * \param theFace - the face on which nodes are searched for
+ * \param theBaseEdge - the edge nodes of which are columns' bases
+ * \param theMesh - the mesh containing nodes
+ * \retval bool - false if something is wrong
+ *
+ * The key of the map is a normalized parameter of each
+ * base node on theBaseEdge.
+ * This method works in supposition that nodes on the face
+ * forms a rectangular grid and elements can be quardrangles or triangles
+ */
+//=======================================================================
+
+bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
+ const TopoDS_Face& theFace,
+ const TopoDS_Edge& theBaseEdge,
+ SMESHDS_Mesh* theMesh)
+{
+ // get vertices of theBaseEdge
+ TopoDS_Vertex vfb, vlb, vft; // first and last, bottom and top vertices
+ TopoDS_Edge eFrw = TopoDS::Edge( theBaseEdge.Oriented( TopAbs_FORWARD ));
+ TopExp::Vertices( eFrw, vfb, vlb );
+
+ // find the other edges of theFace and orientation of e1
+ TopoDS_Edge e1, e2, eTop;
+ bool rev1, CumOri = false;
+ TopExp_Explorer exp( theFace, TopAbs_EDGE );
+ int nbEdges = 0;
+ for ( ; exp.More(); exp.Next() ) {
+ if ( ++nbEdges > 4 ) {
+ return false; // more than 4 edges in theFace
+ }
+ TopoDS_Edge e = TopoDS::Edge( exp.Current() );
+ if ( theBaseEdge.IsSame( e ))
+ continue;
+ TopoDS_Vertex vCommon;
+ if ( !TopExp::CommonVertex( theBaseEdge, e, vCommon ))
+ eTop = e;
+ else if ( vCommon.IsSame( vfb )) {
+ e1 = e;
+ vft = TopExp::LastVertex( e1, CumOri );
+ rev1 = vfb.IsSame( vft );
+ if ( rev1 )
+ vft = TopExp::FirstVertex( e1, CumOri );
+ }
+ else
+ e2 = e;
+ }
+ if ( nbEdges < 4 ) {
+ return false; // less than 4 edges in theFace
+ }
+ if ( e2.IsNull() && vfb.IsSame( vlb ))
+ e2 = e1;
+
+ // submeshes corresponding to shapes
+ SMESHDS_SubMesh* smFace = theMesh->MeshElements( theFace );
+ SMESHDS_SubMesh* smb = theMesh->MeshElements( theBaseEdge );
+ SMESHDS_SubMesh* smt = theMesh->MeshElements( eTop );
+ SMESHDS_SubMesh* sm1 = theMesh->MeshElements( e1 );
+ SMESHDS_SubMesh* sm2 = theMesh->MeshElements( e2 );
+ SMESHDS_SubMesh* smVfb = theMesh->MeshElements( vfb );
+ SMESHDS_SubMesh* smVlb = theMesh->MeshElements( vlb );
+ SMESHDS_SubMesh* smVft = theMesh->MeshElements( vft );
+ if (!smFace || !smb || !smt || !sm1 || !sm2 || !smVfb || !smVlb || !smVft ) {
+ RETURN_BAD_RESULT( "NULL submesh " <<smFace<<" "<<smb<<" "<<smt<<" "<<
+ sm1<<" "<<sm2<<" "<<smVfb<<" "<<smVlb<<" "<<smVft);
+ }
+ if ( smb->NbNodes() != smt->NbNodes() || sm1->NbNodes() != sm2->NbNodes() ) {
+ RETURN_BAD_RESULT(" Diff nb of nodes on opposite edges" );
+ }
+ if (smVfb->NbNodes() != 1 || smVlb->NbNodes() != 1 || smVft->NbNodes() != 1) {
+ RETURN_BAD_RESULT("Empty submesh of vertex");
+ }
+ // define whether mesh is quadratic
+ bool isQuadraticMesh = false;
+ SMDS_ElemIteratorPtr eIt = smFace->GetElements();
+ if ( !eIt->more() ) {
+ RETURN_BAD_RESULT("No elements on the face");
+ }
+ const SMDS_MeshElement* e = eIt->next();
+ isQuadraticMesh = e->IsQuadratic();
+
+ if ( sm1->NbNodes() * smb->NbNodes() != smFace->NbNodes() ) {
+ // check quadratic case
+ if ( isQuadraticMesh ) {
+ // what if there are quadrangles and triangles mixed?
+// int n1 = sm1->NbNodes()/2;
+// int n2 = smb->NbNodes()/2;
+// int n3 = sm1->NbNodes() - n1;
+// int n4 = smb->NbNodes() - n2;
+// int nf = sm1->NbNodes()*smb->NbNodes() - n3*n4;
+// if( nf != smFace->NbNodes() ) {
+// MESSAGE( "Wrong nb face nodes: " <<
+// sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
+// return false;
+// }
+ }
+ else {
+ RETURN_BAD_RESULT( "Wrong nb face nodes: " <<
+ sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
+ }
+ }
+ // IJ size
+ int vsize = sm1->NbNodes() + 2;
+ int hsize = smb->NbNodes() + 2;
+ if(isQuadraticMesh) {
+ vsize = vsize - sm1->NbNodes()/2 -1;
+ hsize = hsize - smb->NbNodes()/2 -1;
+ }
+
+ // load nodes from theBaseEdge
+
+ set<const SMDS_MeshNode*> loadedNodes;
+ const SMDS_MeshNode* nullNode = 0;
+
+ vector<const SMDS_MeshNode*> & nVecf = theParam2ColumnMap[ 0.];
+ nVecf.resize( vsize, nullNode );
+ loadedNodes.insert( nVecf[ 0 ] = smVfb->GetNodes()->next() );
+
+ vector<const SMDS_MeshNode*> & nVecl = theParam2ColumnMap[ 1.];
+ nVecl.resize( vsize, nullNode );
+ loadedNodes.insert( nVecl[ 0 ] = smVlb->GetNodes()->next() );
+
+ double f, l;
+ BRep_Tool::Range( eFrw, f, l );
+ double range = l - f;
+ SMDS_NodeIteratorPtr nIt = smb->GetNodes();
+ const SMDS_MeshNode* node;
+ while ( nIt->more() ) {
+ node = nIt->next();
+ if(IsMedium(node, SMDSAbs_Edge))
+ continue;
+ const SMDS_EdgePosition* pos =
+ dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
+ if ( !pos ) {
+ return false;
+ }
+ double u = ( pos->GetUParameter() - f ) / range;
+ vector<const SMDS_MeshNode*> & nVec = theParam2ColumnMap[ u ];
+ nVec.resize( vsize, nullNode );
+ loadedNodes.insert( nVec[ 0 ] = node );
+ }
+ if ( theParam2ColumnMap.size() != hsize ) {
+ RETURN_BAD_RESULT( "Wrong node positions on theBaseEdge" );
+ }
+
+ // load nodes from e1
+
+ map< double, const SMDS_MeshNode*> sortedNodes; // sort by param on edge
+ nIt = sm1->GetNodes();
+ while ( nIt->more() ) {
+ node = nIt->next();
+ if(IsMedium(node))
+ continue;
+ const SMDS_EdgePosition* pos =
+ dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
+ if ( !pos ) {
+ return false;
+ }
+ sortedNodes.insert( make_pair( pos->GetUParameter(), node ));
+ }
+ loadedNodes.insert( nVecf[ vsize - 1 ] = smVft->GetNodes()->next() );
+ map< double, const SMDS_MeshNode*>::iterator u_n = sortedNodes.begin();
+ int row = rev1 ? vsize - 1 : 0;
+ int dRow = rev1 ? -1 : +1;
+ for ( ; u_n != sortedNodes.end(); u_n++ ) {
+ row += dRow;
+ loadedNodes.insert( nVecf[ row ] = u_n->second );
+ }
+
+ // try to load the rest nodes
+
+ // get all faces from theFace
+ TIDSortedElemSet allFaces, foundFaces;
+ eIt = smFace->GetElements();
+ while ( eIt->more() ) {
+ const SMDS_MeshElement* e = eIt->next();
+ if ( e->GetType() == SMDSAbs_Face )
+ allFaces.insert( e );
+ }
+ // Starting from 2 neighbour nodes on theBaseEdge, look for a face
+ // the nodes belong to, and between the nodes of the found face,
+ // look for a not loaded node considering this node to be the next
+ // in a column of the starting second node. Repeat, starting
+ // from nodes next to the previous starting nodes in their columns,
+ // and so on while a face can be found. Then go the the next pair
+ // of nodes on theBaseEdge.
+ TParam2ColumnMap::iterator par_nVec_1 = theParam2ColumnMap.begin();
+ TParam2ColumnMap::iterator par_nVec_2 = par_nVec_1;
+ // loop on columns
+ int col = 0;
+ for ( par_nVec_2++; par_nVec_2 != theParam2ColumnMap.end(); par_nVec_1++, par_nVec_2++ ) {
+ col++;
+ row = 0;
+ const SMDS_MeshNode* n1 = par_nVec_1->second[ row ];
+ const SMDS_MeshNode* n2 = par_nVec_2->second[ row ];
+ const SMDS_MeshElement* face = 0;
+ bool lastColOnClosedFace = ( nVecf[ row ] == n2 );
+ do {
+ // look for a face by 2 nodes
+ face = SMESH_MeshEditor::FindFaceInSet( n1, n2, allFaces, foundFaces );
+ if ( face ) {
+ int nbFaceNodes = face->NbNodes();
+ if ( face->IsQuadratic() )
+ nbFaceNodes /= 2;
+ if ( nbFaceNodes>4 ) {
+ RETURN_BAD_RESULT(" Too many nodes in a face: " << nbFaceNodes );
+ }
+ // look for a not loaded node of the <face>
+ bool found = false;
+ const SMDS_MeshNode* n3 = 0; // a node defferent from n1 and n2
+ for ( int i = 0; i < nbFaceNodes && !found; ++i ) {
+ node = face->GetNode( i );
+ found = loadedNodes.insert( node ).second;
+ if ( !found && node != n1 && node != n2 )
+ n3 = node;
+ }
+ if ( lastColOnClosedFace && row + 1 < vsize ) {
+ node = nVecf[ row + 1 ];
+ found = ( face->GetNodeIndex( node ) >= 0 );
+ }
+ if ( found ) {
+ if ( ++row > vsize - 1 ) {
+ RETURN_BAD_RESULT( "Too many nodes in column "<< col <<": "<< row+1);
+ }
+ par_nVec_2->second[ row ] = node;
+ foundFaces.insert( face );
+ n2 = node;
+ if ( nbFaceNodes==4 ) {
+ n1 = par_nVec_1->second[ row ];
+ }
+ }
+ else if ( nbFaceNodes==3 && n3 == par_nVec_1->second[ row + 1 ] ) {
+ n1 = n3;
+ }
+ else {
+ RETURN_BAD_RESULT( "Not quad mesh, column "<< col );
+ }
+ }
+ }
+ while ( face && n1 && n2 );
+
+ if ( row < vsize - 1 ) {
+ MESSAGE( "Too few nodes in column "<< col <<": "<< row+1);
+ MESSAGE( "Base node 1: "<< par_nVec_1->second[0]);
+ MESSAGE( "Base node 2: "<< par_nVec_2->second[0]);
+ if ( n1 ) { MESSAGE( "Current node 1: "<< n1); }
+ else { MESSAGE( "Current node 1: NULL"); }
+ if ( n2 ) { MESSAGE( "Current node 2: "<< n2); }
+ else { MESSAGE( "Current node 2: NULL"); }
+ MESSAGE( "first base node: "<< theParam2ColumnMap.begin()->second[0]);
+ MESSAGE( "last base node: "<< theParam2ColumnMap.rbegin()->second[0]);
+ return false;
+ }
+ } // loop on columns
+
+ return true;
}
+/**
+ * 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;
+}
