// Copyright (C) 2007-2021 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, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File: SMESH_MesherHelper.hxx
// Created: 15.02.06 14:48:09
// Author: Sergey KUUL
//
#ifndef SMESH_MesherHelper_HeaderFile
#define SMESH_MesherHelper_HeaderFile
#include "SMESH_SMESH.hxx"
#include "SMESH_ComputeError.hxx"
#include "SMESH_TypeDefs.hxx"
#include <Geom_Surface.hxx>
#include <ShapeAnalysis_Surface.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Shape.hxx>
#include <gp_Pnt2d.hxx>
#include <map>
#include <vector>
class GeomAPI_ProjectPointOnCurve;
class GeomAPI_ProjectPointOnSurf;
class SMDS_MeshNode;
class SMESHDS_Hypothesis;
class SMESHDS_Mesh;
class SMESHDS_SubMesh;
class SMESH_Gen;
class SMESH_Mesh;
class SMESH_ProxyMesh;
class SMESH_subMesh;
class TopoDS_Edge;
class TopoDS_Face;
class TopoDS_Vertex;
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 gp_XY (*xyFunPtr)(const gp_XY& uv1, const gp_XY& uv2);
//=======================================================================
/*!
* \brief It helps meshers to add elements and provides other utilities
*
* - It allows meshers not to care about creation of medium nodes
* when filling a quadratic mesh. Helper does it itself.
* 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_EXPORT SMESH_MesherHelper
{
public:
// ---------- 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);
/*!
* \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 base
* \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 );
/*!
* \brief Return true if a node is at a corner of a 2D structured mesh of FACE
*/
static bool IsCornerOfStructure( const SMDS_MeshNode* n,
const SMESHDS_SubMesh* faceSM,
SMESH_MesherHelper& faceAnalyser );
/*!
* \brief Return true if 2D mesh on FACE is distored
*/
static bool IsDistorted2D( SMESH_subMesh* faceSM,
bool checkUV = false,
SMESH_MesherHelper* faceHelper = NULL);
/*!
* \brief Returns true if given node is medium
* \param n - node to check
* \param typeToCheck - type of elements containing the node to ask about node status
* \retval bool - check result
*/
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);
/*!
* \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
*/
static inline int WrapIndex(int ind, const int nbNodes) {
return (( ind %= nbNodes ) < 0 ) ? ind + nbNodes : ind;
}
/*!
* \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
*/
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);
/*!
* \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, else use explorer
* \retval int - the calculated number
*/
static int Count(const TopoDS_Shape& shape,
const TopAbs_ShapeEnum type,
const bool ignoreSame);
/*!
* \brief Return number of unique ancestors of the shape
*/
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, included into a container shape
*/
static PShapeIteratorPtr GetAncestors(const TopoDS_Shape& shape,
const SMESH_Mesh& mesh,
TopAbs_ShapeEnum ancestorType,
const TopoDS_Shape* container = 0);
/*!
* \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;
SMESH_Mesh* GetMesh() const { return myMesh; }
SMESHDS_Mesh* GetMeshDS() const;
/*!
* Check submesh for given shape: if all elements on this shape are quadratic,
* quadratic elements will be created. Also fill myTLinkNodeMap
*/
bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
/*!
* \brief Set order of elements to create without calling IsQuadraticSubMesh()
*/
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; }
/*
* \brief Find out elements orientation on a geometrical face
*/
bool IsReversedSubMesh (const TopoDS_Face& theFace);
/*!
* \brief Return myCreateBiQuadratic flag
*/
bool GetIsBiQuadratic() const { return myCreateBiQuadratic; }
/*!
* \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 default 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; }
/*!
* \brief Copy shape information from another helper to improve performance
* since SetSubShape() can be time consuming if there are many edges
*/
void CopySubShapeInfo(const SMESH_MesherHelper& other);
/*!
* \brief Convert a shape to its index in the SMESHDS_Mesh
*/
int ShapeToIndex( const TopoDS_Shape& S ) const;
/*!
* Creates a node (!Note ID before u=0.,v0.)
*/
SMDS_MeshNode* AddNode(double x, double y, double z, smIdType 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 smIdType 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 smIdType id=0,
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 smIdType id = 0,
const bool force3d = false);
/*!
* Creates polygon, with additional nodes in quadratic mesh
*/
SMDS_MeshFace* AddPolygonalFace (const std::vector<const SMDS_MeshNode*>& nodes,
const smIdType 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 smIdType id = 0,
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 smIdType 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* n3,
const SMDS_MeshNode* n4,
const SMDS_MeshNode* n5,
const SMDS_MeshNode* n6,
const smIdType id = 0,
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 smIdType id = 0,
bool force3d = true);
/*!
* Creates LINEAR!!!!!!!!! octahedron
*/
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 SMDS_MeshNode* n9,
const SMDS_MeshNode* n10,
const SMDS_MeshNode* n11,
const SMDS_MeshNode* n12,
const smIdType id = 0,
bool force3d = true);
/*!
* Creates polyhedron. In quadratic mesh, adds medium nodes
*/
SMDS_MeshVolume* AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
const std::vector<int>& quantities,
const smIdType 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 Return U of the given node on the edge
*/
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 example 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 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.
*/
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 initialized by given face without location
*/
GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
TopLoc_Location& loc,
double tol=0 ) const;
/*!
* \brief Return projector initialized by given face
*/
GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
double tol=0 ) const;
/*!
* \brief Return projector initialized by given EDGE
*/
GeomAPI_ProjectPointOnCurve& GetPCProjector(const TopoDS_Edge& E ) const;
/*!
* \brief Return a cached ShapeAnalysis_Surface of a FACE
*/
Handle(ShapeAnalysis_Surface) GetSurface(const TopoDS_Face& F ) const;
/*!
* \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 there are degenerated edges
*/
bool HasDegeneratedEdges() const { return !myDegenShapeIds.empty(); }
/*!
* \brief Return a number of degenerated edges in the shape set through
* IsQuadraticSubMesh() or SetSubShape()
* \retval size_t - nb edges
*/
size_t NbDegeneratedEdges() const { return myDegenShapeIds.size(); }
/*!
* \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 representations 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 representations on the face
*/
bool IsSeamShape(const TopoDS_Shape& subShape) const
{ return IsSeamShape( 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( 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 a number of real seam edges in the shape set through
* IsQuadraticSubMesh() or SetSubShape(). A real seam edge encounters twice in a wire
* \retval size_t - nb of real seams
*/
size_t NbRealSeam() const;
/*!
* \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 period in given direction [1,2]
*/
double GetPeriod(int perioIndex) const { return myPar2[ perioIndex-1 ] - myPar1[ perioIndex-1 ]; }
/*!
* \brief Return an alternative parameter for a node on seam
*/
double GetOtherParam(const double param) const;
/*!
* \brief Check if UV is on seam. Return 0 if not, 1 for U seam, 2 for V seam
*/
int IsOnSeam(const gp_XY& uv) 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();
static void WriteShape(const TopoDS_Shape& s);
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
*/
gp_Pnt2d getUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
const SMDS_MeshNode* getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
bool force3d);
double getFaceMaxTol( const TopoDS_Shape& face ) const;
private:
// forbidden 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<smIdType, std::pair<smIdType, smIdType> >
{
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)
std::map< int, double > myFaceMaxTol;
typedef std::map< int, Handle(ShapeAnalysis_Surface)> TID2Surface;
typedef std::map< int, GeomAPI_ProjectPointOnSurf* > TID2ProjectorOnSurf;
typedef std::map< int, GeomAPI_ProjectPointOnCurve* > TID2ProjectorOnCurve;
mutable TID2Surface myFace2Surface;
TID2ProjectorOnSurf myFace2Projector;
TID2ProjectorOnCurve myEdge2Projector;
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