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 // Created on: 1992-08-28
 // Created by: Remi LEQUETTE
 // Copyright (c) 1992-1999 Matra Datavision
 // Copyright (c) 1999-2014 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _BRepTools_HeaderFile
 #define _BRepTools_HeaderFile
 
 #include <TopTools_FormatVersion.hxx>
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <Standard_Real.hxx>
 #include <TopTools_IndexedMapOfShape.hxx>
 #include <Standard_OStream.hxx>
 #include <Standard_IStream.hxx>
 #include <Message_ProgressRange.hxx>
 #include <TopTools_ListOfShape.hxx>
 
 class TopoDS_Face;
 class TopoDS_Wire;
 class TopoDS_Edge;
 class Bnd_Box2d;
 class TopoDS_Vertex;
 class TopoDS_Shell;
 class TopoDS_Solid;
 class TopoDS_CompSolid;
 class TopoDS_Compound;
 class TopoDS_Shape;
 class BRep_Builder;
 class Geom_Curve;
 class Geom2d_Curve;
 class Geom_Surface;
 class OSD_FileSystem;
 
 
 //! The BRepTools package provides  utilities for BRep
 //! data structures.
 //!
 //! * WireExplorer : A tool to explore the topology of
 //! a wire in the order of the edges.
 //!
 //! * ShapeSet :  Tools used for  dumping, writing and
 //! reading.
 //!
 //! * UVBounds : Methods to compute the  limits of the
 //! boundary  of a  face,  a wire or   an edge in  the
 //! parametric space of a face.
 //!
 //! *  Update : Methods  to call when   a topology has
 //! been created to compute all missing data.
 //!
 //! * UpdateFaceUVPoints: Method to update the UV points
 //! stored with the edges on a face.
 //!
 //! * Compare : Method to compare two vertices.
 //!
 //! * Compare : Method to compare two edges.
 //!
 //! * OuterWire : A method to find the outer wire of a
 //! face.
 //!
 //! * Map3DEdges : A method to map all the 3D Edges of
 //! a Shape.
 //!
 //! * Dump : A method to dump a BRep object.
 class BRepTools 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   //! Returns in UMin,  UMax, VMin,  VMax  the  bounding
   //! values in the parametric space of F.
   Standard_EXPORT static void UVBounds (const TopoDS_Face& F, Standard_Real& UMin, Standard_Real& UMax, Standard_Real& VMin, Standard_Real& VMax);
   
   //! Returns in UMin,  UMax, VMin,  VMax  the  bounding
   //! values of the wire in the parametric space of F.
   Standard_EXPORT static void UVBounds (const TopoDS_Face& F, const TopoDS_Wire& W, Standard_Real& UMin, Standard_Real& UMax, Standard_Real& VMin, Standard_Real& VMax);
   
   //! Returns in UMin,  UMax, VMin,  VMax  the  bounding
   //! values of the edge in the parametric space of F.
   Standard_EXPORT static void UVBounds (const TopoDS_Face& F, const TopoDS_Edge& E, Standard_Real& UMin, Standard_Real& UMax, Standard_Real& VMin, Standard_Real& VMax);
   
   //! Adds  to  the box <B>  the bounding values in  the
   //! parametric space of F.
   Standard_EXPORT static void AddUVBounds (const TopoDS_Face& F, Bnd_Box2d& B);
   
   //! Adds  to the box  <B>  the bounding  values of the
   //! wire in the parametric space of F.
   Standard_EXPORT static void AddUVBounds (const TopoDS_Face& F, const TopoDS_Wire& W, Bnd_Box2d& B);
   
   //! Adds to  the box <B>  the  bounding values  of the
   //! edge in the parametric space of F.
   Standard_EXPORT static void AddUVBounds (const TopoDS_Face& F, const TopoDS_Edge& E, Bnd_Box2d& B);
   
   //! Update a vertex (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_Vertex& V);
   
   //! Update an edge, compute 2d bounding boxes.
   Standard_EXPORT static void Update (const TopoDS_Edge& E);
   
   //! Update a wire (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_Wire& W);
   
   //! Update a Face, update UV points.
   Standard_EXPORT static void Update (const TopoDS_Face& F);
   
   //! Update a shell (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_Shell& S);
   
   //! Update a solid (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_Solid& S);
   
   //! Update a composite solid (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_CompSolid& C);
   
   //! Update a compound (nothing is done)
   Standard_EXPORT static void Update (const TopoDS_Compound& C);
   
   //! Update a shape, call the correct update.
   Standard_EXPORT static void Update (const TopoDS_Shape& S);
   
   //! For each edge of the face <F> reset the UV points
   //! to the bounding points of the parametric curve of the
   //! edge on the face.
   Standard_EXPORT static void UpdateFaceUVPoints (const TopoDS_Face& theF);
   
   //! Removes all cached polygonal representation of the shape,
   //! i.e. the triangulations of the faces of <S> and polygons on
   //! triangulations and polygons 3d of the edges.
   //! In case polygonal representation is the only available representation
   //! for the shape (shape does not have geometry) it is not removed.
   //! @param theShape  [in] the shape to clean
   //! @param theForce  [in] allows removing all polygonal representations from the shape,
   //!                       including polygons on triangulations irrelevant for the faces of the given shape.
   Standard_EXPORT static void Clean (const TopoDS_Shape& theShape, const Standard_Boolean theForce = Standard_False);
   
   //! Removes geometry (curves and surfaces) from all edges and faces of the shape
   Standard_EXPORT static void CleanGeometry(const TopoDS_Shape& theShape);
 
   //! Removes all the pcurves of the edges of <S> that
   //! refer to surfaces not belonging to any face of <S>
   Standard_EXPORT static void RemoveUnusedPCurves (const TopoDS_Shape& S);
 
 public:
 
   //! Verifies that each Face from the shape has got a triangulation with a deflection smaller or equal to specified one
   //! and the Edges a discretization on this triangulation.
   //! @param theShape   [in] shape to verify
   //! @param theLinDefl [in] maximum allowed linear deflection
   //! @param theToCheckFreeEdges [in] if TRUE, then free Edges are required to have 3D polygon
   //! @return FALSE if input Shape contains Faces without triangulation,
   //!               or that triangulation has worse (greater) deflection than specified one,
   //!               or Edges in Shape lack polygons on triangulation
   //!               or free Edges in Shape lack 3D polygons
   Standard_EXPORT static Standard_Boolean Triangulation (const TopoDS_Shape& theShape,
                                                          const Standard_Real theLinDefl,
                                                          const Standard_Boolean theToCheckFreeEdges = Standard_False);
 
   //! Loads triangulation data for each face of the shape
   //! from some deferred storage using specified shared input file system
   //! @param theShape            [in] shape to load triangulations
   //! @param theTriangulationIdx [in] index defining what triangulation should be loaded. Starts from 0.
   //!        -1 is used in specific case to load currently already active triangulation.
   //!        If some face doesn't contain triangulation with this index, nothing will be loaded for it.
   //!        Exception will be thrown in case of invalid negative index
   //! @param theToSetAsActive    [in] flag to activate triangulation after its loading
   //! @param theFileSystem       [in] shared file system
   //! @return TRUE if at least one triangulation is loaded.
   Standard_EXPORT static Standard_Boolean LoadTriangulation (const TopoDS_Shape& theShape,
                                                              const Standard_Integer theTriangulationIdx = -1,
                                                              const Standard_Boolean theToSetAsActive = Standard_False,
                                                              const Handle(OSD_FileSystem)& theFileSystem = Handle(OSD_FileSystem)());
 
   //! Releases triangulation data for each face of the shape if there is deferred storage to load it later
   //! @param theShape            [in] shape to unload triangulations
   //! @param theTriangulationIdx [in] index defining what triangulation should be unloaded. Starts from 0.
   //!        -1 is used in specific case to unload currently already active triangulation.
   //!        If some face doesn't contain triangulation with this index, nothing will be unloaded for it.
   //!        Exception will be thrown in case of invalid negative index
   //! @return TRUE if at least one triangulation is unloaded.
   Standard_EXPORT static Standard_Boolean UnloadTriangulation (const TopoDS_Shape& theShape,
                                                                const Standard_Integer theTriangulationIdx = -1);
 
   //! Activates triangulation data for each face of the shape
   //! from some deferred storage using specified shared input file system
   //! @param theShape              [in] shape to activate triangulations
   //! @param theTriangulationIdx   [in] index defining what triangulation should be activated. Starts from 0.
   //!        Exception will be thrown in case of invalid negative index
   //! @param theToActivateStrictly [in] flag to activate exactly triangulation with defined theTriangulationIdx index.
   //!        In TRUE case if some face doesn't contain triangulation with this index, active triangulation
   //!        will not be changed for it. Else the last available triangulation will be activated.
   //! @return TRUE if at least one active triangulation was changed.
   Standard_EXPORT static Standard_Boolean ActivateTriangulation (const TopoDS_Shape& theShape,
                                                                  const Standard_Integer theTriangulationIdx,
                                                                  const Standard_Boolean theToActivateStrictly = false);
 
   //! Loads all available triangulations for each face of the shape
   //! from some deferred storage using specified shared input file system
   //! @param theShape      [in] shape to load triangulations
   //! @param theFileSystem [in] shared file system
   //! @return TRUE if at least one triangulation is loaded.
   Standard_EXPORT static Standard_Boolean LoadAllTriangulations (const TopoDS_Shape& theShape,
                                                                  const Handle(OSD_FileSystem)& theFileSystem = Handle(OSD_FileSystem)());
 
   //! Releases all available triangulations for each face of the shape if there is deferred storage to load them later
   //! @param theShape      [in] shape to unload triangulations
   //! @return TRUE if at least one triangulation is unloaded.
   Standard_EXPORT static Standard_Boolean UnloadAllTriangulations (const TopoDS_Shape& theShape);
 
 public:
 
   //! Returns  True if  the    distance between the  two
   //! vertices is lower than their tolerance.
   Standard_EXPORT static Standard_Boolean Compare (const TopoDS_Vertex& V1, const TopoDS_Vertex& V2);
   
   //! Returns  True if  the    distance between the  two
   //! edges is lower than their tolerance.
   Standard_EXPORT static Standard_Boolean Compare (const TopoDS_Edge& E1, const TopoDS_Edge& E2);
   
   //! Returns the outer most wire of <F>. Returns a Null
   //! wire if <F> has no wires.
   Standard_EXPORT static TopoDS_Wire OuterWire (const TopoDS_Face& F);
   
   //! Stores in the map  <M> all the 3D topology edges
   //! of <S>.
   Standard_EXPORT static void Map3DEdges (const TopoDS_Shape& S, TopTools_IndexedMapOfShape& M);
   
   //! Verifies that the edge  <E> is found two  times on
   //! the face <F> before calling BRep_Tool::IsClosed.
   Standard_EXPORT static Standard_Boolean IsReallyClosed (const TopoDS_Edge& E, const TopoDS_Face& F);
   
   //! Detect closedness of face in U and V directions
   Standard_EXPORT static void DetectClosedness (const TopoDS_Face& theFace,
                                                 Standard_Boolean&  theUclosed,
                                                 Standard_Boolean&  theVclosed);
   
   //! Dumps the topological structure and the geometry
   //! of <Sh> on the stream <S>.
   Standard_EXPORT static void Dump (const TopoDS_Shape& Sh, Standard_OStream& S);
 
   //! Writes the shape to the stream in an ASCII format TopTools_FormatVersion_VERSION_1.
   //! This alias writes shape with triangulation data.
   //! @param theShape [in]       the shape to write
   //! @param theStream [in][out] the stream to output shape into
   //! @param theRange            the range of progress indicator to fill in
   static void Write (const TopoDS_Shape& theShape,
                      Standard_OStream& theStream,
                      const Message_ProgressRange& theProgress = Message_ProgressRange())
   {
     Write (theShape, theStream, Standard_True, Standard_False,
            TopTools_FormatVersion_CURRENT, theProgress);
   }
 
   //! Writes the shape to the stream in an ASCII format of specified version.
   //! @param theShape [in]         the shape to write
   //! @param theStream [in][out]   the stream to output shape into
   //! @param theWithTriangles [in] flag which specifies whether to save shape with (TRUE) or without (FALSE) triangles;
   //!                              has no effect on triangulation-only geometry
   //! @param theWithNormals [in]   flag which specifies whether to save triangulation with (TRUE) or without (FALSE) normals;
   //!                              has no effect on triangulation-only geometry
   //! @param theVersion [in]       the TopTools format version
   //! @param theProgress the range of progress indicator to fill in
   Standard_EXPORT static void Write (const TopoDS_Shape& theShape,
                                      Standard_OStream& theStream,
                                      const Standard_Boolean theWithTriangles,
                                      const Standard_Boolean theWithNormals,
                                      const TopTools_FormatVersion theVersion,
                                      const Message_ProgressRange& theProgress = Message_ProgressRange());
 
   //! Reads a Shape  from <S> in  returns it in  <Sh>.
   //! <B> is used to build the shape.
   Standard_EXPORT static void Read (TopoDS_Shape& Sh, Standard_IStream& S, const BRep_Builder& B,
                                     const Message_ProgressRange& theProgress = Message_ProgressRange());
 
   //! Writes the shape to the file in an ASCII format TopTools_FormatVersion_VERSION_1.
   //! This alias writes shape with triangulation data.
   //! @param theShape [in] the shape to write
   //! @param theFile [in]  the path to file to output shape into
   //! @param theProgress the range of progress indicator to fill in
   static Standard_Boolean Write (const TopoDS_Shape& theShape,
                                  const Standard_CString theFile,
                                  const Message_ProgressRange& theProgress = Message_ProgressRange())
   {
     return Write (theShape, theFile, Standard_True, Standard_False,
                   TopTools_FormatVersion_CURRENT, theProgress);
   }
 
   //! Writes the shape to the file in an ASCII format of specified version.
   //! @param theShape [in]         the shape to write
   //! @param theFile [in]          the path to file to output shape into
   //! @param theWithTriangles [in] flag which specifies whether to save shape with (TRUE) or without (FALSE) triangles;
   //!                              has no effect on triangulation-only geometry
   //! @param theWithNormals [in]   flag which specifies whether to save triangulation with (TRUE) or without (FALSE) normals;
   //!                              has no effect on triangulation-only geometry
   //! @param theVersion [in]       the TopTools format version
   //! @param theProgress the range of progress indicator to fill in
   Standard_EXPORT static Standard_Boolean Write (const TopoDS_Shape& theShape,
                                                  const Standard_CString theFile,
                                                  const Standard_Boolean theWithTriangles,
                                                  const Standard_Boolean theWithNormals,
                                                  const TopTools_FormatVersion theVersion,
                                                  const Message_ProgressRange& theProgress = Message_ProgressRange());
 
   //! Reads a Shape  from <File>,  returns it in  <Sh>.
   //! <B> is used to build the shape.
   Standard_EXPORT static Standard_Boolean Read (TopoDS_Shape& Sh, const Standard_CString File,
                                                 const BRep_Builder& B,
                                                 const Message_ProgressRange& theProgress = Message_ProgressRange());
 
   //! Evals real tolerance of edge  <theE>.
   //! <theC3d>, <theC2d>, <theS>, <theF>, <theL> are
   //! correspondently 3d curve of edge, 2d curve on surface <theS> and
   //! rang of edge
   //! If calculated tolerance is more then current edge tolerance, edge is updated.
   //! Method returns actual tolerance of edge
   Standard_EXPORT static Standard_Real EvalAndUpdateTol(const TopoDS_Edge& theE, 
                                                         const Handle(Geom_Curve)& theC3d, 
                                                         const Handle(Geom2d_Curve)& theC2d, 
                                                         const Handle(Geom_Surface)& theS,
                                                         const Standard_Real theF,
                                                         const Standard_Real theL);
 
   //! returns the cumul  of the orientation  of <Edge>
   //! and thc containing wire in <Face>
   Standard_EXPORT static TopAbs_Orientation OriEdgeInFace(const TopoDS_Edge& theEdge, 
                                                           const TopoDS_Face& theFace);
 
   //! Removes internal sub-shapes from the shape.
   //! The check on internal status is based on orientation of sub-shapes,
   //! classification is not performed.
   //! Before removal of internal sub-shapes the algorithm checks if such
   //! removal is not going to break topological connectivity between sub-shapes.
   //! The flag <theForce> if set to true disables the connectivity check and clears
   //! the given shape from all sub-shapes with internal orientation.
   Standard_EXPORT static void RemoveInternals(TopoDS_Shape& theS,
     const Standard_Boolean theForce = Standard_False);
 
   //! Check all locations of shape according criterium:
   //! aTrsf.IsNegative() || (Abs(Abs(aTrsf.ScaleFactor()) - 1.) > TopLoc_Location::ScalePrec())
   //! All sub-shapes having such locations are put in list theProblemShapes
   Standard_EXPORT static void CheckLocations(const TopoDS_Shape& theS,
                                              TopTools_ListOfShape& theProblemShapes);
 
 };
 
 #endif // _BRepTools_HeaderFile

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