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241 lines
8.2 KiB
C++
241 lines
8.2 KiB
C++
// Copyright (c) 2013 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _BRepMesh_IncrementalMesh_HeaderFile
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#define _BRepMesh_IncrementalMesh_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <BRepMesh_FastDiscret.hxx>
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#include <TopTools_MapOfShape.hxx>
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#include <TopTools_DataMapOfShapeReal.hxx>
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#include <BRepMesh_DiscretRoot.hxx>
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#include <BRepMesh.hxx>
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#include <vector>
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class Poly_Triangulation;
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class TopoDS_Shape;
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class TopoDS_Edge;
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class TopoDS_Face;
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//! Builds the mesh of a shape with respect of their
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//! correctly triangulated parts
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class BRepMesh_IncrementalMesh : public BRepMesh_DiscretRoot
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{
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public: //! @name mesher API
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//! Default constructor
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Standard_EXPORT BRepMesh_IncrementalMesh();
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//! Destructor
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Standard_EXPORT virtual ~BRepMesh_IncrementalMesh();
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//! Constructor.
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//! Automatically calls method Perform.
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//! @param theShape shape to be meshed.
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//! @param theLinDeflection linear deflection.
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//! @param isRelative if TRUE deflection used for discretization of
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//! each edge will be <theLinDeflection> * <size of edge>. Deflection
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//! used for the faces will be the maximum deflection of their edges.
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//! @param theAngDeflection angular deflection.
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//! @param isInParallel if TRUE shape will be meshed in parallel.
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Standard_EXPORT BRepMesh_IncrementalMesh(
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const TopoDS_Shape& theShape,
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const Standard_Real theLinDeflection,
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const Standard_Boolean isRelative = Standard_False,
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const Standard_Real theAngDeflection = 0.5,
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const Standard_Boolean isInParallel = Standard_False);
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//! Performs meshing ot the shape.
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Standard_EXPORT virtual void Perform();
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public: //! @name accessing to parameters.
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//! Enables using relative deflection.
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//! @param isRelative if TRUE deflection used for discretization of
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//! each edge will be <theLinDeflection> * <size of edge>. Deflection
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//! used for the faces will be the maximum deflection of their edges.
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inline void SetRelative(const Standard_Boolean isRelative)
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{
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myRelative = isRelative;
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}
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//! Returns relative deflection flag.
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inline Standard_Boolean IsRelative() const
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{
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return myRelative;
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}
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//! Returns modified flag.
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inline Standard_Boolean IsModified() const
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{
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return myModified;
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}
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//! Returns accumulated status flags faced during meshing.
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inline Standard_Integer GetStatusFlags() const
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{
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return myStatus;
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}
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//! Request algorithm to launch in multiple threads to improve performance.
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inline void SetParallel(const Standard_Boolean isInParallel)
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{
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myInParallel = isInParallel;
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}
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//! Returns the multi-threading usage flag.
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inline Standard_Boolean IsParallel() const
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{
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return myInParallel;
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}
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//! Sets min size parameter.
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inline void SetMinSize(const Standard_Real theMinSize)
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{
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myMinSize = Max(theMinSize, Precision::Confusion());
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}
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//! Returns min size parameter.
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inline Standard_Real GetMinSize() const
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{
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return myMinSize;
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}
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//! Enables/disables internal vertices mode (enabled by default).
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inline void SetInternalVerticesMode(const Standard_Boolean isEnabled)
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{
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myInternalVerticesMode = isEnabled;
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}
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//! Returns flag indicating is internal vertices mode enabled/disabled.
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inline Standard_Boolean IsInternalVerticesMode() const
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{
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return myInternalVerticesMode;
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}
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//! Enables/disables control of deflection of mesh from real surface
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//! (enabled by default).
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inline void SetControlSurfaceDeflection(const Standard_Boolean isEnabled)
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{
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myIsControlSurfaceDeflection = isEnabled;
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}
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//! Returns flag indicating is adaptive reconfiguration
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//! of mesh enabled/disabled.
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inline Standard_Boolean IsControlSurfaceDeflection() const
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{
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return myIsControlSurfaceDeflection;
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}
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public: //! @name plugin API
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//! Plugin interface for the Mesh Factories.
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//! Initializes meshing algorithm with the given parameters.
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//! @param theShape shape to be meshed.
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//! @param theLinDeflection linear deflection.
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//! @param theAngDeflection angular deflection.
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//! @param[out] theAlgo pointer to initialized algorithm.
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Standard_EXPORT static Standard_Integer Discret(const TopoDS_Shape& theShape,
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const Standard_Real theLinDeflection,
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const Standard_Real theAngDeflection,
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BRepMesh_DiscretRoot* &theAlgo);
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//! Returns multi-threading usage flag set by default in
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//! Discret() static method (thus applied only to Mesh Factories).
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Standard_EXPORT static Standard_Boolean IsParallelDefault();
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//! Setup multi-threading usage flag set by default in
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//! Discret() static method (thus applied only to Mesh Factories).
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Standard_EXPORT static void SetParallelDefault(const Standard_Boolean isInParallel);
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DEFINE_STANDARD_RTTI(BRepMesh_IncrementalMesh, BRepMesh_DiscretRoot)
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protected:
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Standard_EXPORT virtual void init();
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private:
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//! Builds the incremental mesh for the shape.
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void update();
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//! Checks triangulation of the given face for consistency
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//! with the chosen tolerance. If some edge of face has no
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//! discrete representation triangulation will be calculated.
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//! @param theFace face to be checked.
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void update(const TopoDS_Face& theFace);
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//! Checks discretization of the given edge for consistency
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//! with the chosen tolerance.
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//! @param theEdge edge to be checked.
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void update(const TopoDS_Edge& theEdge);
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//! Collects faces suitable for meshing.
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void collectFaces();
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//! Discretizes edges that have no associations with faces.
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void discretizeFreeEdges();
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//! Returns deflection of the given edge.
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//! @param theEdge edge which tolerance should be taken.
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Standard_Real edgeDeflection(const TopoDS_Edge& theEdge);
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//! Returns deflection of the given face.
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//! If relative flag is set, calculates relative deflection of the face
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//! as an average value of relative deflection regarding face's edges.
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//! Returns value of deflection set by user elsewhere.
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Standard_Real faceDeflection(const TopoDS_Face& theFace);
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//! Prepares the given face for meshing.
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//! Nullifies triangulation of face and polygons of face's edges.
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//! @param theFace face to be checked.
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//! @param isWithCheck if TRUE, checks parameters of triangulation
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//! existing in face. If its deflection satisfies the given value and
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//! each edge of face has polygon corresponded to this triangulation,
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//! method return FALSE.
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//! @return TRUE in case if the given face should be meshed.
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Standard_Boolean toBeMeshed(const TopoDS_Face& theFace,
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const Standard_Boolean isWithCheck);
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//! Stores mesh to the shape.
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void commit();
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//! Stores mesh of internal edges to the face.
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void commitEdges(const TopoDS_Face& theFace);
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//! Clears internal data structures.
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void clear();
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protected:
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Standard_Boolean myRelative;
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Standard_Boolean myInParallel;
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BRepMesh::DMapOfEdgeListOfTriangulationBool myEdges;
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Handle(BRepMesh_FastDiscret) myMesh;
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Standard_Boolean myModified;
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TopTools_DataMapOfShapeReal myEdgeDeflection;
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Standard_Real myMaxShapeSize;
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Standard_Integer myStatus;
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NCollection_Vector<TopoDS_Face> myFaces;
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Standard_Real myMinSize;
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Standard_Boolean myInternalVerticesMode;
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Standard_Boolean myIsControlSurfaceDeflection;
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};
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DEFINE_STANDARD_HANDLE(BRepMesh_IncrementalMesh,BRepMesh_DiscretRoot)
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#endif
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