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572 lines
22 KiB
C++
572 lines
22 KiB
C++
// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// File: SMESH_MesherHelper.hxx
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// Created: 15.02.06 14:48:09
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// Author: Sergey KUUL
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//
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#ifndef SMESH_MesherHelper_HeaderFile
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#define SMESH_MesherHelper_HeaderFile
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#include "SMESH_SMESH.hxx"
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#include "SMESH_MeshEditor.hxx" // needed for many meshers
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#include <SMDS_MeshNode.hxx>
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#include <SMDS_QuadraticEdge.hxx>
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#include <Geom_Surface.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_Shape.hxx>
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#include <gp_Pnt2d.hxx>
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#include <map>
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#include <vector>
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class GeomAPI_ProjectPointOnSurf;
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class GeomAPI_ProjectPointOnCurve;
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class SMESH_ProxyMesh;
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typedef std::map<SMESH_TLink, const SMDS_MeshNode*> TLinkNodeMap;
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typedef std::map<SMESH_TLink, const SMDS_MeshNode*>::iterator ItTLinkNode;
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typedef SMDS_Iterator<const TopoDS_Shape*> PShapeIterator;
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typedef boost::shared_ptr< PShapeIterator > PShapeIteratorPtr;
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typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
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typedef std::map< double, TNodeColumn > TParam2ColumnMap;
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typedef gp_XY (*xyFunPtr)(const gp_XY& uv1, const gp_XY& uv2);
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//=======================================================================
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/*!
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* \brief It helps meshers to add elements
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*
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* It allow meshers not to care about creation of medium nodes
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* when filling a quadratic mesh. Helper does it itself.
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* It defines degree of elements to create when IsQuadraticSubMesh()
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* is called.
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*/
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//=======================================================================
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class SMESH_EXPORT SMESH_MesherHelper
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{
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public:
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// ---------- PUBLIC UTILITIES ----------
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/*!
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* \brief Returns true if given node is medium
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* \param n - node to check
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* \param typeToCheck - type of elements containing the node to ask about node status
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* \retval bool - check result
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*/
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static bool IsMedium(const SMDS_MeshNode* node,
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const SMDSAbs_ElementType typeToCheck = SMDSAbs_All);
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/*!
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* \brief Load nodes bound to face into a map of node columns
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* \param theParam2ColumnMap - map of node columns to fill
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* \param theFace - the face on which nodes are searched for
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* \param theBaseSide - the edges holding nodes on which columns' bases
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* \param theMesh - the mesh containing nodes
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* \retval bool - false if something is wrong
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*
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* The key of the map is a normalized parameter of each
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* base node on theBaseSide. Edges in theBaseSide must be sequenced.
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* This method works in supposition that nodes on the face
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* forms a rectangular grid and elements can be quardrangles or triangles
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*/
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static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
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const TopoDS_Face& theFace,
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const std::list<TopoDS_Edge>& theBaseSide,
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SMESHDS_Mesh* theMesh,
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SMESH_ProxyMesh* theProxyMesh=0);
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/*!
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* \brief Variant of LoadNodeColumns() above with theBaseSide given by one edge
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*/
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static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
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const TopoDS_Face& theFace,
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const TopoDS_Edge& theBaseEdge,
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SMESHDS_Mesh* theMesh,
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SMESH_ProxyMesh* theProxyMesh=0);
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/*!
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* \brief Return support shape of a node
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* \param node - the node
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* \param meshDS - mesh DS
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* \retval TopoDS_Shape - found support shape
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*/
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static TopoDS_Shape GetSubShapeByNode(const SMDS_MeshNode* node,
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const SMESHDS_Mesh* meshDS);
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/*!
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* \brief Return a valid node index, fixing the given one if necessary
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* \param ind - node index
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* \param nbNodes - total nb of nodes
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* \retval int - valid node index
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*/
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static int WrapIndex(const int ind, const int nbNodes) {
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if ( ind < 0 ) return nbNodes + ind % nbNodes;
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if ( ind >= nbNodes ) return ind % nbNodes;
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return ind;
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}
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/*!
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* \brief Return number of unique ancestors of the shape
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*/
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static int NbAncestors(const TopoDS_Shape& shape,
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const SMESH_Mesh& mesh,
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TopAbs_ShapeEnum ancestorType=TopAbs_SHAPE);
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/*!
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* \brief Return iterator on ancestors of the given type
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*/
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static PShapeIteratorPtr GetAncestors(const TopoDS_Shape& shape,
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const SMESH_Mesh& mesh,
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TopAbs_ShapeEnum ancestorType);
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/*!
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* \brief Find a common ancestors of two shapes of the given type
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*/
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static TopoDS_Shape GetCommonAncestor(const TopoDS_Shape& shape1,
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const TopoDS_Shape& shape2,
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const SMESH_Mesh& mesh,
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TopAbs_ShapeEnum ancestorType);
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/*!
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* \brief Return orientation of sub-shape in the main shape
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*/
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static TopAbs_Orientation GetSubShapeOri(const TopoDS_Shape& shape,
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const TopoDS_Shape& subShape);
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static bool IsSubShape( const TopoDS_Shape& shape, const TopoDS_Shape& mainShape );
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static bool IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh );
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static double MaxTolerance( const TopoDS_Shape& shape );
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static bool IsClosedEdge( const TopoDS_Edge& anEdge );
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static TopoDS_Vertex IthVertex( const bool is2nd, TopoDS_Edge anEdge, const bool CumOri=true );
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public:
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// ---------- PUBLIC INSTANCE METHODS ----------
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// constructor
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SMESH_MesherHelper(SMESH_Mesh& theMesh);
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SMESH_Mesh* GetMesh() const { return myMesh; }
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SMESHDS_Mesh* GetMeshDS() const { return GetMesh()->GetMeshDS(); }
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/*!
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* Check submesh for given shape: if all elements on this shape are quadratic,
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* quadratic elements will be created. Also fill myTLinkNodeMap
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*/
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bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
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/*!
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* \brief Set order of elements to create without calling IsQuadraticSubMesh()
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*/
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void SetIsQuadratic(const bool theBuildQuadratic)
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{ myCreateQuadratic = theBuildQuadratic; }
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/*!
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* \brief Return myCreateQuadratic flag
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*/
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bool GetIsQuadratic() const { return myCreateQuadratic; }
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/*!
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* \brief Move medium nodes of faces and volumes to fix distorted elements
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* \param volumeOnly - fix nodes on geom faces or not if the shape is solid
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*/
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void FixQuadraticElements(bool volumeOnly=true);
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/*!
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* \brief To set created elements on the shape set by IsQuadraticSubMesh()
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* or the next methods. By defaul elements are set on the shape if
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* a mesh has no shape to be meshed
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*/
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void SetElementsOnShape(bool toSet) { mySetElemOnShape = toSet; }
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/*!
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* \brief Set shape to make elements on without calling IsQuadraticSubMesh()
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*/
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void SetSubShape(const int subShapeID);//!==SMESHDS_Mesh::ShapeToIndex(shape)
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void SetSubShape(const TopoDS_Shape& subShape);
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/*!
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* \brief Return ID of the shape set by IsQuadraticSubMesh() or SetSubShape()
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* \retval int - shape index in SMESHDS
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*/
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int GetSubShapeID() const { return myShapeID; }
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/*!
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* \brief Return the shape set by IsQuadraticSubMesh() or SetSubShape()
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*/
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const TopoDS_Shape& GetSubShape() const { return myShape; }
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/*!
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* Creates a node
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*/
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SMDS_MeshNode* AddNode(double x, double y, double z, int ID = 0, double u=0., double v=0.);
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/*!
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* Creates quadratic or linear edge
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*/
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SMDS_MeshEdge* AddEdge(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const int id = 0,
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const bool force3d = true);
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/*!
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* Creates quadratic or linear triangle
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*/
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SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const int id=0,
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const bool force3d = false);
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/*!
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* Creates quadratic or linear quadrangle
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*/
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SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const int id = 0,
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const bool force3d = false);
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/*!
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* Creates polygon, with additional nodes in quadratic mesh
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*/
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SMDS_MeshFace* AddPolygonalFace (const std::vector<const SMDS_MeshNode*>& nodes,
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const int id = 0,
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const bool force3d = false);
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/*!
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* Creates quadratic or linear tetrahedron
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*/
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SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const int id = 0,
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const bool force3d = true);
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/*!
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* Creates quadratic or linear pyramid
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*/
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SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const SMDS_MeshNode* n5,
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const int id = 0,
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const bool force3d = true);
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/*!
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* Creates quadratic or linear pentahedron
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*/
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SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const SMDS_MeshNode* n5,
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const SMDS_MeshNode* n6,
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const int id = 0,
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const bool force3d = true);
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/*!
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* Creates quadratic or linear hexahedron
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*/
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SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const SMDS_MeshNode* n5,
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const SMDS_MeshNode* n6,
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const SMDS_MeshNode* n7,
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const SMDS_MeshNode* n8,
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const int id = 0,
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bool force3d = true);
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/*!
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* Creates LINEAR!!!!!!!!! octahedron
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*/
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SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n3,
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const SMDS_MeshNode* n4,
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const SMDS_MeshNode* n5,
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const SMDS_MeshNode* n6,
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const SMDS_MeshNode* n7,
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const SMDS_MeshNode* n8,
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const SMDS_MeshNode* n9,
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const SMDS_MeshNode* n10,
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const SMDS_MeshNode* n11,
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const SMDS_MeshNode* n12,
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const int id = 0,
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bool force3d = true);
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/*!
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* Creates polyhedron. In quadratic mesh, adds medium nodes
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*/
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SMDS_MeshVolume* AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
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const std::vector<int>& quantities,
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const int ID=0,
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const bool force3d = true);
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/*!
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* \brief Enables fixing node parameters on EDGEs and FACEs by
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* GetNodeU(...,check=true), GetNodeUV(...,check=true), CheckNodeUV() and
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* CheckNodeU() in case if a node lies on a shape set via SetSubShape().
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* Default is False
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*/
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void ToFixNodeParameters(bool toFix);
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/*!
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* \brief Return U of the given node on the edge
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*/
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double GetNodeU(const TopoDS_Edge& theEdge,
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const SMDS_MeshNode* theNode,
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const SMDS_MeshNode* inEdgeNode=0,
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bool* check=0);
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/*!
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* \brief Return node UV on face
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* \param inFaceNode - a node of element being created located inside a face
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*/
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gp_XY GetNodeUV(const TopoDS_Face& F,
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const SMDS_MeshNode* n,
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const SMDS_MeshNode* inFaceNode=0,
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bool* check=0) const;
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/*!
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* \brief Check and fix node UV on a face
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* \param force - check even if checks of other nodes on this face passed OK
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* \param distXYZ - returns result distance and point coordinates
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* \retval bool - false if UV is bad and could not be fixed
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*/
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bool CheckNodeUV(const TopoDS_Face& F,
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const SMDS_MeshNode* n,
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gp_XY& uv,
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const double tol,
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const bool force=false,
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double distXYZ[4]=0) const;
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/*!
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* \brief Check and fix node U on an edge
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* \param force - check even if checks of other nodes on this edge passed OK
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* \param distXYZ - returns result distance and point coordinates
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* \retval bool - false if U is bad and could not be fixed
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*/
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bool CheckNodeU(const TopoDS_Edge& E,
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const SMDS_MeshNode* n,
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double& u,
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const double tol,
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const bool force=false,
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double distXYZ[4]=0) const;
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/*!
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* \brief Return middle UV taking in account surface period
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*/
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static gp_XY GetMiddleUV(const Handle(Geom_Surface)& surface,
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const gp_XY& uv1,
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const gp_XY& uv2);
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/*!
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* \brief Define a pointer to wrapper over a function of gp_XY class,
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* suitable to pass as xyFunPtr to applyIn2D().
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* For exaple gp_XY_FunPtr(Added) defines pointer gp_XY_Added to function
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* calling gp_XY::Added(gp_XY), which is to be used like following
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* applyIn2D(surf, uv1, uv2, gp_XY_Added)
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*/
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#define gp_XY_FunPtr(meth) \
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static gp_XY __gpXY_##meth (const gp_XY& uv1, const gp_XY& uv2) { return uv1.meth( uv2 ); } \
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static xyFunPtr gp_XY_##meth = & __gpXY_##meth
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/*!
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* \brief Perform given operation on two 2d points in parameric space of given surface.
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* It takes into account period of the surface. Use gp_XY_FunPtr macro
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* to easily define pointer to function of gp_XY class.
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*/
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static gp_XY applyIn2D(const Handle(Geom_Surface)& surface,
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const gp_XY& uv1,
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const gp_XY& uv2,
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xyFunPtr fun,
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const bool resultInPeriod=true);
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/*!
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* \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
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* \retval bool - return true if the face is periodic
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*
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* If F is Null, answer about subshape set through IsQuadraticSubMesh() or
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* SetSubShape()
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*/
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bool GetNodeUVneedInFaceNode(const TopoDS_Face& F = TopoDS_Face()) const;
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/*!
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* \brief Return projector intitialized by given face without location, which is returned
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*/
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GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
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TopLoc_Location& loc,
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double tol=0 ) const;
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/*!
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* \brief Check if shape is a degenerated edge or it's vertex
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* \param subShape - edge or vertex index in SMESHDS
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* \retval bool - true if subShape is a degenerated shape
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*
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* It works only if IsQuadraticSubMesh() or SetSubShape() has been called
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*/
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bool IsDegenShape(const int subShape) const
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{ return myDegenShapeIds.find( subShape ) != myDegenShapeIds.end(); }
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/*!
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* \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
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* has a degenerated edges
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* \retval bool - true if it has
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*/
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bool HasDegeneratedEdges() const { return !myDegenShapeIds.empty(); }
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/*!
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* \brief Check if shape is a seam edge or it's vertex
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* \param subShape - edge or vertex index in SMESHDS
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* \retval bool - true if subShape is a seam shape
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*
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* It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
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* Seam shape has two 2D alternative represenations on the face
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*/
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bool IsSeamShape(const int subShape) const
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{ return mySeamShapeIds.find( subShape ) != mySeamShapeIds.end(); }
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/*!
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* \brief Check if shape is a seam edge or it's vertex
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* \param subShape - edge or vertex
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* \retval bool - true if subShape is a seam shape
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*
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* It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
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* Seam shape has two 2D alternative represenations on the face
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*/
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bool IsSeamShape(const TopoDS_Shape& subShape) const
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{ return IsSeamShape( GetMeshDS()->ShapeToIndex( subShape )); }
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/*!
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* \brief Return true if an edge or a vertex encounters twice in face wire
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* \param subShape - Id of edge or vertex
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*/
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bool IsRealSeam(const int subShape) const
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{ return mySeamShapeIds.find( -subShape ) != mySeamShapeIds.end(); }
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/*!
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* \brief Return true if an edge or a vertex encounters twice in face wire
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* \param subShape - edge or vertex
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*/
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bool IsRealSeam(const TopoDS_Shape& subShape) const
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{ return IsRealSeam( GetMeshDS()->ShapeToIndex( subShape)); }
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/*!
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* \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
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* has a seam edge
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* \retval bool - true if it has
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*/
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bool HasSeam() const { return !mySeamShapeIds.empty(); }
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/*!
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* \brief Return index of periodic parametric direction of a closed face
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* \retval int - 1 for U, 2 for V direction
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*/
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int GetPeriodicIndex() const { return myParIndex; }
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/*!
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* \brief Return an alternative parameter for a node on seam
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*/
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double GetOtherParam(const double param) const;
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/*!
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* \brief Return existing or create new medium nodes between given ones
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* \param force3d - true means node creation at the middle between the
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* two given nodes, else node position is found on its
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* supporting geometrical shape, if any.
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*/
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const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const bool force3d);
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/*!
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* \brief Return index and type of the shape (EDGE or FACE only) to set a medium node on
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*/
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std::pair<int, TopAbs_ShapeEnum> GetMediumPos(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2);
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/*!
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* \brief Add a link in my data structure
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*/
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void AddTLinkNode(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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const SMDS_MeshNode* n12);
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/*!
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* \brief Add many links in my data structure
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*/
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void AddTLinkNodeMap(const TLinkNodeMap& aMap)
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{ myTLinkNodeMap.insert(aMap.begin(), aMap.end()); }
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void AddTLinks(const SMDS_MeshEdge* edge);
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void AddTLinks(const SMDS_MeshFace* face);
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void AddTLinks(const SMDS_MeshVolume* vol);
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/**
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* Returns myTLinkNodeMap
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*/
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const TLinkNodeMap& GetTLinkNodeMap() const { return myTLinkNodeMap; }
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/**
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* Check mesh without geometry for: if all elements on this shape are quadratic,
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* quadratic elements will be created.
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* Used then generated 3D mesh without geometry.
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*/
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enum MType{ LINEAR, QUADRATIC, COMP };
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MType IsQuadraticMesh();
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virtual ~SMESH_MesherHelper();
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protected:
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/*!
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* \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
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* \param uv1 - UV on the seam
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* \param uv2 - UV within a face
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* \retval gp_Pnt2d - selected UV
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*/
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gp_Pnt2d GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
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const SMDS_MeshNode* getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
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const SMDS_MeshNode* n2,
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bool force3d);
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private:
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// Forbiden copy constructor
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SMESH_MesherHelper (const SMESH_MesherHelper& theOther) {};
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// special map for using during creation of quadratic elements
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TLinkNodeMap myTLinkNodeMap;
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std::set< int > myDegenShapeIds;
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std::set< int > mySeamShapeIds;
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double myPar1[2], myPar2[2]; // U and V bounds of a closed periodic surface
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int myParIndex; // bounds' index (1-U, 2-V, 3-both)
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typedef std::map< int, GeomAPI_ProjectPointOnSurf* > TID2ProjectorOnSurf;
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TID2ProjectorOnSurf myFace2Projector;
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typedef std::map< int, GeomAPI_ProjectPointOnCurve* > TID2ProjectorOnCurve;
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TID2ProjectorOnCurve myEdge2Projector;
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TopoDS_Shape myShape;
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SMESH_Mesh* myMesh;
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int myShapeID;
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bool myCreateQuadratic;
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bool mySetElemOnShape;
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bool myFixNodeParameters;
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std::map< int,bool > myNodePosShapesValidity;
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bool toCheckPosOnShape(int shapeID ) const;
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void setPosOnShapeValidity(int shapeID, bool ok ) const;
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};
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#endif
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