-// Copyright (C) 2005 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
-// This library is distributed in the hope that it will be useful
+// 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.
// 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.hxx
// Created: 15.02.06 14:48:09
// Author: Sergey KUUL
-// Copyright: Open CASCADE 2006
-
-
+//
#ifndef SMESH_MesherHelper_HeaderFile
#define SMESH_MesherHelper_HeaderFile
-#include <SMESH_Mesh.hxx>
-#include <TopoDS_Shape.hxx>
+#include "SMESH_SMESH.hxx"
+
+#include "SMESH_MeshEditor.hxx" // needed for many meshers
#include <SMDS_MeshNode.hxx>
+#include <SMDS_QuadraticEdge.hxx>
+
+#include <Geom_Surface.hxx>
+#include <ShapeAnalysis_Surface.hxx>
#include <TopoDS_Face.hxx>
+#include <TopoDS_Shape.hxx>
#include <gp_Pnt2d.hxx>
-#include <SMDS_QuadraticEdge.hxx>
#include <map>
+#include <vector>
+
+class GeomAPI_ProjectPointOnSurf;
+class GeomAPI_ProjectPointOnCurve;
+class SMESH_ProxyMesh;
+
+typedef std::map<SMESH_TLink, const SMDS_MeshNode*> TLinkNodeMap;
+typedef std::map<SMESH_TLink, const SMDS_MeshNode*>::iterator ItTLinkNode;
+
+typedef SMDS_Iterator<const TopoDS_Shape*> PShapeIterator;
+typedef boost::shared_ptr< PShapeIterator > PShapeIteratorPtr;
+
+typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
+typedef std::map< double, TNodeColumn > TParam2ColumnMap;
-typedef pair<const SMDS_MeshNode*, const SMDS_MeshNode*> NLink;
-typedef map<NLink, const SMDS_MeshNode*> NLinkNodeMap;
-typedef map<NLink, const SMDS_MeshNode*>::iterator ItNLinkNode;
+typedef gp_XY (*xyFunPtr)(const gp_XY& uv1, const gp_XY& uv2);
+//=======================================================================
/*!
- * \brief It helps meshers to add elements
+ * \brief It helps meshers to add elements and provides other utilities
*
- * It allow meshers not to care about creation of medium nodes
+ * - It allows meshers not to care about creation of medium nodes
* when filling a quadratic mesh. Helper does it itself.
- * It defines degree of elements to create when IsQuadraticSubMesh()
+ * It defines order of elements to create when IsQuadraticSubMesh()
* is called.
+ * - It provides information on a shape it is initialized with:
+ * periodicity, presence of singularities etc.
+ * - ...
*/
+//=======================================================================
-class SMESH_MesherHelper
+class SMESH_EXPORT SMESH_MesherHelper
{
public:
- // ---------- PUBLIC METHODS ----------
-
- /// Empty constructor
- SMESH_MesherHelper(SMESH_Mesh& theMesh)
- { myMesh=(void *)&theMesh; myCreateQuadratic = false; myShapeID=-1;}
-
- SMESH_Mesh* GetMesh() const
- { return (SMESH_Mesh*)myMesh; }
-
- /// Copy constructor
- //Standard_EXPORT SMESH_MesherHelper (const SMESH_MesherHelper& theOther);
+ // ---------- PUBLIC UTILITIES ----------
+
+ /*!
+ * \brief Returns true if all elements of a sub-mesh are of same shape
+ * \param smDS - sub-mesh to check elements of
+ * \param shape - expected shape of elements
+ * \param nullSubMeshRes - result value for the case of smDS == NULL
+ * \retval bool - check result
+ */
+ static bool IsSameElemGeometry(const SMESHDS_SubMesh* smDS,
+ SMDSAbs_GeometryType shape,
+ const bool nullSubMeshRes = true);
- /// Destructor
- //Standard_EXPORT virtual ~SMESH_MesherHelper ();
+ /*!
+ * \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 theBaseSide - the edges holding nodes on which 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 theBaseSide. Edges in theBaseSide must be sequenced.
+ * This method works in supposition that nodes on the face
+ * forms a structured grid and elements can be quardrangles or triangles
+ */
+ static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
+ const TopoDS_Face& theFace,
+ const std::list<TopoDS_Edge>& theBaseSide,
+ SMESHDS_Mesh* theMesh,
+ SMESH_ProxyMesh* theProxyMesh=0);
+ /*!
+ * \brief Variant of LoadNodeColumns() above with theBaseSide given by one edge
+ */
+ static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
+ const TopoDS_Face& theFace,
+ const TopoDS_Edge& theBaseEdge,
+ SMESHDS_Mesh* theMesh,
+ SMESH_ProxyMesh* theProxyMesh=0);
+ /*!
+ * \brief Return true if 2D mesh on FACE is structured
+ */
+ static bool IsStructured( SMESH_subMesh* faceSM );
- /**
- * Check submesh for given shape
- * Check if all elements on this shape
- * are quadratic, if yes => set true to myCreateQuadratic
- * (default value is false). Also fill myNLinkNodeMap
- * Returns myCreateQuadratic
+ /*!
+ * \brief Return true if 2D mesh on FACE is distored
*/
- bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
+ static bool IsDistorted2D( SMESH_subMesh* faceSM, bool checkUV=false );
/*!
* \brief Returns true if given node is medium
*/
static bool IsMedium(const SMDS_MeshNode* node,
const SMDSAbs_ElementType typeToCheck = SMDSAbs_All);
+ /*!
+ * \brief Return support shape of a node
+ * \param node - the node
+ * \param meshDS - mesh DS
+ * \retval TopoDS_Shape - found support shape
+ * \sa SMESH_Algo::VertexNode( const TopoDS_Vertex&, SMESHDS_Mesh* )
+ */
+ static TopoDS_Shape GetSubShapeByNode(const SMDS_MeshNode* node,
+ const SMESHDS_Mesh* meshDS);
- /**
- * Auxilary function for filling myNLinkNodeMap
+ /*!
+ * \brief Return a valid node index, fixing the given one if necessary
+ * \param ind - node index
+ * \param nbNodes - total nb of nodes
+ * \retval int - valid node index
*/
- void AddNLinkNode(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const SMDS_MeshNode* n12);
+ static inline int WrapIndex(int ind, const int nbNodes) {
+ return (( ind %= nbNodes ) < 0 ) ? ind + nbNodes : ind;
+ }
- /**
- * Auxilary function for filling myNLinkNodeMap
+ /*!
+ * \brief Return UV of a point inside a quadrilateral FACE by it's
+ * normalized parameters within a unit quadrangle and the
+ * corresponding projections on sub-shapes of the real-world FACE.
+ * The used calculation method is called Trans-Finite Interpolation (TFI).
+ * \param x,y - normalized parameters that should be in range [0,1]
+ * \param a0,a1,a2,a3 - UV of VERTEXes of the FACE == projections on VERTEXes
+ * \param p0,p1,p2,p3 - UV of the point projections on EDGEs of the FACE
+ * \return gp_XY - UV of the point on the FACE
+ *
+ * Y ^ Order of those UV in the FACE is as follows.
+ * |
+ * a3 p2 a2
+ * o---x-----o
+ * | : |
+ * | :UV |
+ * p3 x...O.....x p1
+ * | : |
+ * o---x-----o ----> X
+ * a0 p0 a1
*/
- void AddNLinkNodeMap(const NLinkNodeMap& aMap)
- { myNLinkNodeMap.insert(aMap.begin(), aMap.end()); }
+ inline static gp_XY calcTFI(double x, double y,
+ const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
+ const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3);
- /**
- * Returns myNLinkNodeMap
+ /*!
+ * \brief Same as "gp_XY calcTFI(...)" but in 3D
+ */
+ inline static gp_XYZ calcTFI(double x, double y,
+ const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
+ const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3);
+ /*!
+ * \brief Count nb of sub-shapes
+ * \param shape - the shape
+ * \param type - the type of sub-shapes to count
+ * \param ignoreSame - if true, use map not to count same shapes, esle use explorer
+ * \retval int - the calculated number
*/
- const NLinkNodeMap& GetNLinkNodeMap() { return myNLinkNodeMap; }
+ static int Count(const TopoDS_Shape& shape,
+ const TopAbs_ShapeEnum type,
+ const bool ignoreSame);
/*!
- * \brief Return node UV on face
- * \param F - the face
- * \param n - the node
- * \param inFaceNode - a node of element being created located inside a face
- * \retval gp_XY - resulting UV
- *
- * Auxilary function called form GetMediumNode()
+ * \brief Return number of unique ancestors of the shape
*/
- gp_XY GetNodeUV(const TopoDS_Face& F,
- const SMDS_MeshNode* n,
- const SMDS_MeshNode* inFaceNode=0);
+ static int NbAncestors(const TopoDS_Shape& shape,
+ const SMESH_Mesh& mesh,
+ TopAbs_ShapeEnum ancestorType=TopAbs_SHAPE);
+ /*!
+ * \brief Return iterator on ancestors of the given type
+ */
+ static PShapeIteratorPtr GetAncestors(const TopoDS_Shape& shape,
+ const SMESH_Mesh& mesh,
+ TopAbs_ShapeEnum ancestorType);
+ /*!
+ * \brief Find a common ancestor, of the given type, of two shapes
+ */
+ static TopoDS_Shape GetCommonAncestor(const TopoDS_Shape& shape1,
+ const TopoDS_Shape& shape2,
+ const SMESH_Mesh& mesh,
+ TopAbs_ShapeEnum ancestorType);
+ /*!
+ * \brief Return orientation of sub-shape in the main shape
+ */
+ static TopAbs_Orientation GetSubShapeOri(const TopoDS_Shape& shape,
+ const TopoDS_Shape& subShape);
+
+ static bool IsSubShape( const TopoDS_Shape& shape, const TopoDS_Shape& mainShape );
+
+ static bool IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh );
+
+ static bool IsBlock( const TopoDS_Shape& shape );
+
+ static double MaxTolerance( const TopoDS_Shape& shape );
+ static double GetAngle( const TopoDS_Edge & E1, const TopoDS_Edge & E2,
+ const TopoDS_Face & F, const TopoDS_Vertex & V,
+ gp_Vec* faceNormal=0);
+
+ static bool IsClosedEdge( const TopoDS_Edge& anEdge );
+
+ static TopoDS_Vertex IthVertex( const bool is2nd, TopoDS_Edge anEdge, const bool CumOri=true );
+
+ static TopAbs_ShapeEnum GetGroupType(const TopoDS_Shape& group,
+ const bool avoidCompound=false);
+
+ static TopoDS_Shape GetShapeOfHypothesis( const SMESHDS_Hypothesis * hyp,
+ const TopoDS_Shape& shape,
+ SMESH_Mesh* mesh);
+
+
+public:
+ // ---------- PUBLIC INSTANCE METHODS ----------
+
+ // constructor
+ SMESH_MesherHelper(SMESH_Mesh& theMesh);
+
+ SMESH_Gen* GetGen() const { return GetMesh()->GetGen(); }
+
+ SMESH_Mesh* GetMesh() const { return myMesh; }
+
+ SMESHDS_Mesh* GetMeshDS() const { return GetMesh()->GetMeshDS(); }
+
/*!
- * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
- * \param F - the face
- * \retval bool - return true if the face is periodic
- *
- * if F is Null, answer about subshape set through IsQuadraticSubMesh() or
- * SetSubShape()
+ * Check submesh for given shape: if all elements on this shape are quadratic,
+ * quadratic elements will be created. Also fill myTLinkNodeMap
*/
- bool GetNodeUVneedInFaceNode(const TopoDS_Face& F = TopoDS_Face()) const;
+ bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
/*!
- * \brief Return U on edge
- * \param F - the edge
- * \param n - the node
- * \retval double - resulting U
- *
- * Auxilary function called from GetMediumNode()
+ * \brief Set order of elements to create without calling IsQuadraticSubMesh()
*/
- double GetNodeU(const TopoDS_Edge& E,
- const SMDS_MeshNode* n);
+ void SetIsQuadratic(const bool theBuildQuadratic)
+ { myCreateQuadratic = theBuildQuadratic; }
+ /*!
+ * \brief Set myCreateBiQuadratic flag
+ */
+ void SetIsBiQuadratic(const bool theBuildBiQuadratic)
+ { myCreateBiQuadratic = theBuildBiQuadratic; }
+
+ /*!
+ * \brief Return myCreateQuadratic flag
+ */
+ bool GetIsQuadratic() const { return myCreateQuadratic; }
- /**
- * Special function for search or creation medium node
+ /*
+ * \brief Find out elements orientation on a geometrical face
*/
- const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const bool force3d);
+ bool IsReversedSubMesh (const TopoDS_Face& theFace);
- /**
- * Special function for creation quadratic edge
+ /*!
+ * \brief Return myCreateBiQuadratic flag
*/
- SMDS_QuadraticEdge* AddQuadraticEdge(const SMDS_MeshNode* n1,
- const SMDS_MeshNode* n2,
- const int id = 0,
- const bool force3d = true);
+ bool GetIsBiQuadratic() const { return myCreateBiQuadratic; }
- /**
- * Special function for creation quadratic triangle
+ /*!
+ * \brief Move medium nodes of faces and volumes to fix distorted elements
+ * \param error - container of fixed distorted elements
+ * \param volumeOnly - fix nodes on geom faces or not if the shape is solid
+ */
+ void FixQuadraticElements(SMESH_ComputeErrorPtr& error, bool volumeOnly=true);
+
+ /*!
+ * \brief To set created elements on the shape set by IsQuadraticSubMesh()
+ * or the next methods. By defaul elements are set on the shape if
+ * a mesh has no shape to be meshed
+ */
+ bool SetElementsOnShape(bool toSet)
+ { bool res = mySetElemOnShape; mySetElemOnShape = toSet; return res; }
+
+ /*!
+ * \brief Set shape to make elements on without calling IsQuadraticSubMesh()
+ */
+ void SetSubShape(const int subShapeID);//!==SMESHDS_Mesh::ShapeToIndex(shape)
+ void SetSubShape(const TopoDS_Shape& subShape);
+ /*!
+ * \brief Return ID of the shape set by IsQuadraticSubMesh() or SetSubShape()
+ * \retval int - shape index in SMESHDS
+ */
+ int GetSubShapeID() const { return myShapeID; }
+ /*!
+ * \brief Return the shape set by IsQuadraticSubMesh() or SetSubShape()
+ */
+ const TopoDS_Shape& GetSubShape() const { return myShape; }
+
+ /*!
+ * Creates a node (!Note ID before u=0.,v0.)
+ */
+ SMDS_MeshNode* AddNode(double x, double y, double z, int ID = 0, double u=0., double v=0.);
+ /*!
+ * Creates quadratic or linear edge
+ */
+ SMDS_MeshEdge* AddEdge(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const int id = 0,
+ const bool force3d = true);
+ /*!
+ * Creates quadratic or linear triangle
*/
SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const int id=0,
- const bool force3d = false);
-
- /**
- * Special function for creation quadratic quadrangle
+ const bool force3d = false);
+ /*!
+ * Creates bi-quadratic, quadratic or linear quadrangle
*/
SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const SMDS_MeshNode* n4,
const int id = 0,
- const bool force3d = false);
-
- /**
- * Special function for creation quadratic tetraahedron
+ const bool force3d = false);
+ /*!
+ * Creates polygon, with additional nodes in quadratic mesh
+ */
+ SMDS_MeshFace* AddPolygonalFace (const std::vector<const SMDS_MeshNode*>& nodes,
+ const int id = 0,
+ const bool force3d = false);
+ /*!
+ * Creates quadratic or linear tetrahedron
*/
SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const SMDS_MeshNode* n4,
const int id = 0,
- const bool force3d = true);
-
- /**
- * Special function for creation quadratic pentahedron
+ const bool force3d = true);
+ /*!
+ * Creates quadratic or linear pyramid
+ */
+ SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n5,
+ const int id = 0,
+ const bool force3d = true);
+ /*!
+ * Creates quadratic or linear pentahedron
*/
SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n5,
const SMDS_MeshNode* n6,
const int id = 0,
- const bool force3d = true);
+ const bool force3d = true);
+ /*!
+ * Creates bi-quadratic, quadratic or linear hexahedron
+ */
+ SMDS_MeshVolume* 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 SMDS_MeshNode* n7,
+ const SMDS_MeshNode* n8,
+ const int id = 0,
+ bool force3d = true);
- /**
- * Special function for creation quadratic hexahedron
+ /*!
+ * Creates LINEAR!!!!!!!!! octahedron
*/
SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n6,
const SMDS_MeshNode* n7,
const SMDS_MeshNode* n8,
+ const SMDS_MeshNode* n9,
+ const SMDS_MeshNode* n10,
+ const SMDS_MeshNode* n11,
+ const SMDS_MeshNode* n12,
const int id = 0,
- bool force3d = true);
+ bool force3d = true);
-
/*!
- * \brief Set order of elements to create
- * \param theBuildQuadratic - to build quadratic or not
- *
- * To be used for quadratic elements creation without preceding
- * IsQuadraticSubMesh() or AddQuadraticEdge() call
+ * Creates polyhedron. In quadratic mesh, adds medium nodes
*/
- void SetKeyIsQuadratic(const bool theBuildQuadratic)
- { myCreateQuadratic = theBuildQuadratic; }
+ SMDS_MeshVolume* AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
+ const std::vector<int>& quantities,
+ const int ID=0,
+ const bool force3d = true);
+ /*!
+ * \brief Enables fixing node parameters on EDGEs and FACEs by
+ * GetNodeU(...,check=true), GetNodeUV(...,check=true), CheckNodeUV() and
+ * CheckNodeU() in case if a node lies on a shape set via SetSubShape().
+ * Default is False
+ */
+ void ToFixNodeParameters(bool toFix);
/*!
- * \brief Set shape to make elements on
- * \param subShape, subShapeID - shape or its ID (==SMESHDS_Mesh::ShapeToIndex(shape))
+ * \brief Return U of the given node on the edge
*/
- void SetSubShape(const int subShapeID);
- void SetSubShape(const TopoDS_Shape& subShape);
+ double GetNodeU(const TopoDS_Edge& theEdge,
+ const SMDS_MeshNode* theNode,
+ const SMDS_MeshNode* inEdgeNode=0,
+ bool* check=0) const;
+ /*!
+ * \brief Return node UV on face
+ * \param inFaceNode - a node of element being created located inside a face
+ * \param check - if provided, returns result of UV check that it enforces
+ */
+ gp_XY GetNodeUV(const TopoDS_Face& F,
+ const SMDS_MeshNode* n,
+ const SMDS_MeshNode* inFaceNode=0,
+ bool* check=0) const;
+ /*!
+ * \brief Check and fix node UV on a face
+ * \param force - check even if checks of other nodes on this face passed OK
+ * \param distXYZ - returns result distance and point coordinates
+ * \retval bool - false if UV is bad and could not be fixed
+ */
+ bool CheckNodeUV(const TopoDS_Face& F,
+ const SMDS_MeshNode* n,
+ gp_XY& uv,
+ const double tol,
+ const bool force=false,
+ double distXYZ[4]=0) const;
+ /*!
+ * \brief Check and fix node U on an edge
+ * \param force - check even if checks of other nodes on this edge passed OK
+ * \param distXYZ - returns result distance and point coordinates
+ * \retval bool - false if U is bad and could not be fixed
+ */
+ bool CheckNodeU(const TopoDS_Edge& E,
+ const SMDS_MeshNode* n,
+ double& u,
+ const double tol,
+ const bool force=false,
+ double distXYZ[4]=0) const;
+ /*!
+ * \brief Return middle UV taking in account surface period
+ */
+ static gp_XY GetMiddleUV(const Handle(Geom_Surface)& surface,
+ const gp_XY& uv1,
+ const gp_XY& uv2);
+ /*!
+ * \brief Return UV for the central node of a biquadratic triangle
+ */
+ static gp_XY GetCenterUV(const gp_XY& uv1,
+ const gp_XY& uv2,
+ const gp_XY& uv3,
+ const gp_XY& uv12,
+ const gp_XY& uv23,
+ const gp_XY& uv31,
+ bool * isBadTria=0);
+ /*!
+ * \brief Define a pointer to wrapper over a function of gp_XY class,
+ * suitable to pass as xyFunPtr to ApplyIn2D().
+ * For exaple gp_XY_FunPtr(Added) defines pointer gp_XY_Added to function
+ * calling gp_XY::Added(gp_XY), which is to be used like following
+ * ApplyIn2D(surf, uv1, uv2, gp_XY_Added)
+ */
+#define gp_XY_FunPtr(meth) \
+ static gp_XY __gpXY_##meth (const gp_XY& uv1, const gp_XY& uv2) { return uv1.meth( uv2 ); } \
+ static xyFunPtr gp_XY_##meth = & __gpXY_##meth
/*!
- * \brief Return shape or its ID, on which created elements are added
- * \retval TopoDS_Shape, int - shape or its ID
+ * \brief 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.
*/
- int GetSubShapeID() { return myShapeID; }
- TopoDS_Shape GetSubShape() { return myShape; }
+ static gp_XY ApplyIn2D(Handle(Geom_Surface) surface,
+ const gp_XY& uv1,
+ const gp_XY& uv2,
+ xyFunPtr fun,
+ const bool resultInPeriod=true);
+
+ /*!
+ * \brief Move node positions on a FACE within surface period
+ * \param [in] face - the FACE
+ * \param [inout] uv - node positions to adjust
+ * \param [in] nbUV - nb of \a uv
+ */
+ void AdjustByPeriod( const TopoDS_Face& face, gp_XY uv[], const int nbUV );
+
+ /*!
+ * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
+ * \retval bool - return true if the face is periodic
+ *
+ * If F is Null, answer about subshape set through IsQuadraticSubMesh() or
+ * SetSubShape()
+ */
+ bool GetNodeUVneedInFaceNode(const TopoDS_Face& F = TopoDS_Face()) const;
+
+ /*!
+ * \brief Return projector intitialized by given face without location, which is returned
+ */
+ GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
+ TopLoc_Location& loc,
+ double tol=0 ) const;
+ /*!
+ * \brief Return a cached ShapeAnalysis_Surface of a FACE
+ */
+ Handle(ShapeAnalysis_Surface) GetSurface(const TopoDS_Face& F );
+
+ /*!
+ * \brief Check if shape is a degenerated edge or it's vertex
+ * \param subShape - edge or vertex index in SMESHDS
+ * \retval bool - true if subShape is a degenerated shape
+ *
+ * It works only if IsQuadraticSubMesh() or SetSubShape() has been called
+ */
+ bool IsDegenShape(const int subShape) const
+ { return myDegenShapeIds.find( subShape ) != myDegenShapeIds.end(); }
+ /*!
+ * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
+ * has a degenerated edges
+ * \retval bool - true if it has
+ */
+ bool HasDegeneratedEdges() const { return !myDegenShapeIds.empty(); }
+
+ /*!
+ * \brief Check if shape is a seam edge or it's vertex
+ * \param subShape - edge or vertex index in SMESHDS
+ * \retval bool - true if subShape is a seam shape
+ *
+ * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
+ * Seam shape has two 2D alternative represenations on the face
+ */
+ bool IsSeamShape(const int subShape) const
+ { return mySeamShapeIds.find( subShape ) != mySeamShapeIds.end(); }
+ /*!
+ * \brief Check if shape is a seam edge or it's vertex
+ * \param subShape - edge or vertex
+ * \retval bool - true if subShape is a seam shape
+ *
+ * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
+ * Seam shape has two 2D alternative represenations on the face
+ */
+ bool IsSeamShape(const TopoDS_Shape& subShape) const
+ { return IsSeamShape( GetMeshDS()->ShapeToIndex( subShape )); }
+ /*!
+ * \brief Return true if an edge or a vertex encounters twice in face wire
+ * \param subShape - Id of edge or vertex
+ */
+ bool IsRealSeam(const int subShape) const
+ { return mySeamShapeIds.find( -subShape ) != mySeamShapeIds.end(); }
+ /*!
+ * \brief Return true if an edge or a vertex encounters twice in face wire
+ * \param subShape - edge or vertex
+ */
+ bool IsRealSeam(const TopoDS_Shape& subShape) const
+ { return IsRealSeam( GetMeshDS()->ShapeToIndex( subShape)); }
+ /*!
+ * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
+ * has a seam edge, i.e. an edge that has two parametric representations
+ * on a surface
+ * \retval bool - true if it has
+ */
+ bool HasSeam() const { return !mySeamShapeIds.empty(); }
+ /*!
+ * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
+ * has a seam edge that encounters twice in a wire
+ * \retval bool - true if it has
+ */
+ bool HasRealSeam() const { return HasSeam() && ( *mySeamShapeIds.begin() < 0 ); }
+ /*!
+ * \brief Return index of periodic parametric direction of a closed face
+ * \retval int - 1 for U, 2 for V direction
+ */
+ int GetPeriodicIndex() const { return myParIndex; }
+ /*!
+ * \brief Return an alternative parameter for a node on seam
+ */
+ double GetOtherParam(const double param) const;
+
+ /*!
+ * \brief Return existing or create new medium nodes between given ones
+ * \param force3d - true means node creation at the middle between the
+ * two given nodes, else node position is found on its
+ * supporting geometrical shape, if any.
+ * \param expectedSupport - shape type corresponding to element being created
+ * , e.g TopAbs_EDGE if SMDSAbs_Edge is created
+ * basing on \a n1 and \a n2
+ */
+ const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const bool force3d,
+ TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
+ /*!
+ * \brief Return existing or create a new central node for a quardilateral
+ * quadratic face given its 8 nodes.
+ * \param force3d - true means node creation in between the given nodes,
+ * else node position is found on a geometrical face if any.
+ */
+ const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n12,
+ const SMDS_MeshNode* n23,
+ const SMDS_MeshNode* n34,
+ const SMDS_MeshNode* n41,
+ bool force3d);
+ /*!
+ * \brief Return existing or create a new central node for a
+ * quadratic triangle given its 6 nodes.
+ * \param force3d - true means node creation in between the given nodes,
+ * else node position is found on a geometrical face if any.
+ */
+ const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n12,
+ const SMDS_MeshNode* n23,
+ const SMDS_MeshNode* n31,
+ bool force3d);
+ /*!
+ * \brief Return index and type of the shape (EDGE or FACE only) to set a medium node on
+ */
+ std::pair<int, TopAbs_ShapeEnum> GetMediumPos(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const bool useCurSubShape=false,
+ TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
+ /*!
+ * \brief Add a link in my data structure
+ */
+ void AddTLinkNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n12);
+ /*!
+ * \brief Add many links in my data structure
+ */
+ void AddTLinkNodeMap(const TLinkNodeMap& aMap)
+ { myTLinkNodeMap.insert(aMap.begin(), aMap.end()); }
+
+ bool AddTLinks(const SMDS_MeshEdge* edge);
+ bool AddTLinks(const SMDS_MeshFace* face);
+ bool AddTLinks(const SMDS_MeshVolume* vol);
+
+ /**
+ * Returns myTLinkNodeMap
+ */
+ const TLinkNodeMap& GetTLinkNodeMap() const { return myTLinkNodeMap; }
+
+ /**
+ * 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.
+ */
+ enum MType{ LINEAR, QUADRATIC, COMP };
+ MType IsQuadraticMesh();
+
+ virtual ~SMESH_MesherHelper();
protected:
/*!
* \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
+ * \param uv1 - UV on the seam
+ * \param uv2 - UV within a face
+ * \retval gp_Pnt2d - selected UV
*/
- gp_Pnt2d GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
+ gp_Pnt2d getUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
- private:
+ const SMDS_MeshNode* getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ bool force3d);
- void* myMesh;
+ double getFaceMaxTol( const TopoDS_Shape& face ) const;
- int myShapeID;
+ private:
+
+ // Forbiden copy constructor
+ SMESH_MesherHelper (const SMESH_MesherHelper& theOther);
+
+ // key of a map of bi-quadratic face to it's central node
+ struct TBiQuad: public std::pair<int, std::pair<int, int> >
+ {
+ TBiQuad(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4=0)
+ {
+ TIDSortedNodeSet s;
+ s.insert(n1);
+ s.insert(n2);
+ s.insert(n3);
+ if ( n4 ) s.insert(n4);
+ TIDSortedNodeSet::iterator n = s.begin();
+ first = (*n++)->GetID();
+ second.first = (*n++)->GetID();
+ second.second = (*n++)->GetID();
+ }
+ };
+
+ // maps used during creation of quadratic elements
+ TLinkNodeMap myTLinkNodeMap; // medium nodes on links
+ std::map< TBiQuad, const SMDS_MeshNode* > myMapWithCentralNode; // central nodes of faces
+
+ std::set< int > myDegenShapeIds;
+ std::set< int > mySeamShapeIds;
+ double myPar1[2], myPar2[2]; // U and V bounds of a closed periodic surface
+ int myParIndex; // bounds' index (1-U, 2-V, 3-both)
- // Key for creation quadratic faces
- bool myCreateQuadratic;
+ std::map< int, double > myFaceMaxTol;
- // special map for using during creation quadratic faces
- NLinkNodeMap myNLinkNodeMap;
+ typedef std::map< int, Handle(ShapeAnalysis_Surface)> TID2Surface;
+ typedef std::map< int, GeomAPI_ProjectPointOnSurf* > TID2ProjectorOnSurf;
+ typedef std::map< int, GeomAPI_ProjectPointOnCurve* > TID2ProjectorOnCurve;
+ TID2Surface myFace2Surface;
+ TID2ProjectorOnSurf myFace2Projector;
+ TID2ProjectorOnCurve myEdge2Projector;
- std::set< int > mySeamShapeIds;
- double myPar1, myPar2; // bounds of a closed periodic surface
- int myParIndex; // bounds' index (1-U, 2-V)
TopoDS_Shape myShape;
+ SMESH_Mesh* myMesh;
+ int myShapeID;
+ bool myCreateQuadratic;
+ bool myCreateBiQuadratic;
+ bool mySetElemOnShape;
+ bool myFixNodeParameters;
+
+ std::map< int,bool > myNodePosShapesValidity;
+ bool toCheckPosOnShape(int shapeID ) const;
+ void setPosOnShapeValidity(int shapeID, bool ok ) const;
};
+//=======================================================================
+inline gp_XY
+SMESH_MesherHelper::calcTFI(double x, double y,
+ const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
+ const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3)
+{
+ return
+ ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
+ ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
+}
+//=======================================================================
+inline gp_XYZ
+SMESH_MesherHelper::calcTFI(double x, double y,
+ const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
+ const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3)
+{
+ return
+ ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
+ ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
+}
+//=======================================================================
#endif
