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 // Created on: 1993-12-15
 // Created by: Remi LEQUETTE
 // Copyright (c) 1993-1999 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 _BRepLib_HeaderFile
 #define _BRepLib_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <Standard_Real.hxx>
 #include <Standard_Boolean.hxx>
 #include <GeomAbs_Shape.hxx>
 #include <Standard_Integer.hxx>
 #include <TopoDS.hxx>
 #include <TopoDS_Edge.hxx>
 #include <TopTools_ListOfShape.hxx>
 #include <NCollection_List.hxx>
 
 class Geom2d_Curve;
 class Adaptor3d_Curve;
 class Geom_Plane;
 class TopoDS_Shape;
 class TopoDS_Solid;
 class TopoDS_Face;
 class BRepTools_ReShape;
 
 
 //! The BRepLib package provides general utilities for
 //! BRep.
 //!
 //! * FindSurface : Class to compute a surface through
 //! a set of edges.
 //!
 //! * Compute missing 3d curve on an edge.
 class BRepLib 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
 
   //! Computes the max distance between edge
   //! and its 2d representation on the face.
   //! Sets the default precision.  The current Precision
   //! is returned.
   Standard_EXPORT static void Precision (const Standard_Real P);
   
   //! Returns the default precision.
   Standard_EXPORT static Standard_Real Precision();
   
   //! Sets the current plane to P.
   Standard_EXPORT static void Plane (const Handle(Geom_Plane)& P);
   
   //! Returns the current plane.
   Standard_EXPORT static const Handle(Geom_Plane)& Plane();
   
   //! checks if the Edge is same range IGNORING
   //! the same range flag of the edge
   //! Confusion argument is to compare real numbers
   //! idenpendently of any model space tolerance
   Standard_EXPORT static Standard_Boolean CheckSameRange (const TopoDS_Edge& E, const Standard_Real Confusion = 1.0e-12);
   
   //! will make all the curve representation have
   //! the same range domain for the parameters.
   //! This will IGNORE the same range flag value
   //! to proceed.
   //! If there is a 3D curve there it will the
   //! range of that curve. If not the first curve representation
   //! encountered in the list will give its range to
   //! the all the other curves.
   Standard_EXPORT static void SameRange (const TopoDS_Edge& E, const Standard_Real Tolerance = 1.0e-5);
   
   //! Computes the 3d curve for the edge  <E> if it does
   //! not exist. Returns True  if the curve was computed
   //! or  existed. Returns False  if there is no  planar
   //! pcurve or the computation failed.
   //! <MaxSegment> >= 30 in approximation
   Standard_EXPORT static Standard_Boolean BuildCurve3d (const TopoDS_Edge& E, const Standard_Real Tolerance = 1.0e-5, const GeomAbs_Shape Continuity = GeomAbs_C1, const Standard_Integer MaxDegree = 14, const Standard_Integer MaxSegment = 0);
   
   //! Computes  the 3d curves  for all the  edges of <S>
   //! return False if one of the computation failed.
   //! <MaxSegment> >= 30 in approximation
   Standard_EXPORT static Standard_Boolean BuildCurves3d (const TopoDS_Shape& S, const Standard_Real Tolerance, const GeomAbs_Shape Continuity = GeomAbs_C1, const Standard_Integer MaxDegree = 14, const Standard_Integer MaxSegment = 0);
   
   //! Computes  the 3d curves  for all the  edges of <S>
   //! return False if one of the computation failed.
   Standard_EXPORT static Standard_Boolean BuildCurves3d (const TopoDS_Shape& S);
 
   //! Builds pcurve of edge on face if the surface is plane, and updates the edge.
   Standard_EXPORT static void BuildPCurveForEdgeOnPlane(const TopoDS_Edge& theE, const TopoDS_Face& theF);
 
   //! Builds pcurve of edge on face if the surface is plane, but does not update the edge.
   //! The output are the pcurve and the flag telling that pcurve was built.
   Standard_EXPORT static void BuildPCurveForEdgeOnPlane(const TopoDS_Edge& theE, const TopoDS_Face& theF,
                                                         Handle(Geom2d_Curve)& aC2D, Standard_Boolean& bToUpdate);
 
   //! Builds pcurves of edges on face if the surface is plane, and update the edges.
   template<class TCont> static void BuildPCurveForEdgesOnPlane(const TCont& theLE, const TopoDS_Face& theF)
   {
     for (typename TCont::Iterator aIt(theLE); aIt.More(); aIt.Next())
     {
       const TopoDS_Edge& aE = TopoDS::Edge(aIt.Value());
       if (!aE.IsNull())
         BRepLib::BuildPCurveForEdgeOnPlane(aE, theF);
     }
   }
 
   //! Checks if the edge has a  Tolerance smaller than -- --
   //! -- -- MaxToleranceToCheck  if  so it will compute  the
   //! radius    of  -- the   cylindrical  pipe  surface that
   //! MinToleranceRequest is the minimum tolerance before it
   //! is useful to start testing.
   //! Usually it should be around 10e-5
   //! contains all -- the curve representation of the edge
   //! returns True if the Edge tolerance had to be updated
   Standard_EXPORT static Standard_Boolean UpdateEdgeTol (const TopoDS_Edge& E, const Standard_Real MinToleranceRequest, const Standard_Real MaxToleranceToCheck);
   
   //! -- Checks all the edges of the shape whose -- -- --
   //! Tolerance  is  smaller than  MaxToleranceToCheck --
   //! Returns True if at  least  one edge was updated --
   //! MinToleranceRequest is the minimum tolerance before
   //! --  it -- is  useful to start  testing.
   //! Usually it should be around -- 10e-5--
   //!
   //! Warning :The  method is  very  slow  as it  checks all.
   //! Use  only  in interfaces or  processing assimilate batch
   Standard_EXPORT static Standard_Boolean UpdateEdgeTolerance (const TopoDS_Shape& S, const Standard_Real MinToleranceRequest, const Standard_Real MaxToleranceToCheck);
   
   //! Computes new 2d curve(s)  for the edge <theEdge> to have
   //! the same parameter  as  the  3d curve.
   //! The algorithm is not done if the flag SameParameter
   //! was True  on the  Edge.
   Standard_EXPORT static void SameParameter (const TopoDS_Edge& theEdge, const Standard_Real Tolerance = 1.0e-5);
 
   //! Computes new 2d curve(s)  for the edge <theEdge> to have
   //! the same parameter  as  the  3d curve.
   //! The algorithm is not done if the flag SameParameter
   //! was True  on the  Edge.<br>
   //! theNewTol is a new tolerance of vertices of the input edge
   //! (not applied inside the algorithm, but pre-computed).
   //! If IsUseOldEdge is true then the input edge will be modified,
   //! otherwise the new copy of input edge will be created.
   //! Returns the new edge as a result, can be ignored if IsUseOldEdge is true.
   Standard_EXPORT static TopoDS_Edge SameParameter(const TopoDS_Edge& theEdge,
   const Standard_Real theTolerance, Standard_Real& theNewTol, const Standard_Boolean IsUseOldEdge);
   
   //! Computes new 2d curve(s) for all the edges of  <S>
   //! to have the same parameter  as  the  3d curve.
   //! The algorithm is not done if the flag SameParameter
   //! was True  on an  Edge.
   Standard_EXPORT static void SameParameter(const TopoDS_Shape& S,
     const Standard_Real Tolerance = 1.0e-5, const Standard_Boolean forced = Standard_False);
 
   //! Computes new 2d curve(s) for all the edges of  <S>
   //! to have the same parameter  as  the  3d curve.
   //! The algorithm is not done if the flag SameParameter
   //! was True  on an  Edge.<br>
   //! theReshaper is used to record the modifications of input shape <S> to prevent any 
   //! modifications on the shape itself.
   //! Thus the input shape (and its subshapes) will not be modified, instead the reshaper will 
   //! contain a modified empty-copies of original subshapes as substitutions.
   Standard_EXPORT static void SameParameter(const TopoDS_Shape& S, BRepTools_ReShape& theReshaper,
     const Standard_Real Tolerance = 1.0e-5, const Standard_Boolean forced = Standard_False );
  
   //! Replaces tolerance   of  FACE EDGE VERTEX  by  the
   //! tolerance Max of their connected handling shapes.
   //! It is not necessary to use this call after
   //! SameParameter. (called in)
   Standard_EXPORT static void UpdateTolerances (const TopoDS_Shape& S, const Standard_Boolean verifyFaceTolerance = Standard_False);
 
   //! Replaces tolerance   of  FACE EDGE VERTEX  by  the
   //! tolerance Max of their connected handling shapes.
   //! It is not necessary to use this call after
   //! SameParameter. (called in)<br>
   //! theReshaper is used to record the modifications of input shape <S> to prevent any 
   //! modifications on the shape itself.
   //! Thus the input shape (and its subshapes) will not be modified, instead the reshaper will 
   //! contain a modified empty-copies of original subshapes as substitutions.
   Standard_EXPORT static void UpdateTolerances (const TopoDS_Shape& S, BRepTools_ReShape& theReshaper, 
     const Standard_Boolean verifyFaceTolerance = Standard_False );
   
   //! Checks tolerances of edges (including inner points) and vertices
   //! of a shape and updates them to satisfy "SameParameter" condition
   Standard_EXPORT static void UpdateInnerTolerances (const TopoDS_Shape& S);
   
   //! Orients the solid forward  and the  shell with the
   //! orientation to have  matter in the solid. Returns
   //! False if the solid is unOrientable (open or incoherent)
   Standard_EXPORT static Standard_Boolean OrientClosedSolid (TopoDS_Solid& solid);
 
   //! Returns the order of continuity between two faces
   //! connected by an edge
   Standard_EXPORT static GeomAbs_Shape ContinuityOfFaces(const TopoDS_Edge&  theEdge,
                                                          const TopoDS_Face&  theFace1,
                                                          const TopoDS_Face&  theFace2,
                                                          const Standard_Real theAngleTol);
 
   //! Encodes the Regularity of edges on a Shape.
   //! Warning: <TolAng> is an angular tolerance, expressed in Rad.
   //! Warning: If the edges's regularity are coded before, nothing
   //! is done.
   Standard_EXPORT static void EncodeRegularity (const TopoDS_Shape& S, const Standard_Real TolAng = 1.0e-10);
 
   //! Encodes the Regularity of edges in list <LE> on the shape <S>
   //! Warning: <TolAng> is an angular tolerance, expressed in Rad.
   //! Warning: If the edges's regularity are coded before, nothing
   //! is done.
   Standard_EXPORT static void EncodeRegularity(const TopoDS_Shape& S, const TopTools_ListOfShape& LE, const Standard_Real TolAng = 1.0e-10);
   
   //! Encodes the Regularity between <F1> and <F2> by <E>
   //! Warning: <TolAng> is an angular tolerance, expressed in Rad.
   //! Warning: If the edge's regularity is coded before, nothing
   //! is done.
   Standard_EXPORT static void EncodeRegularity (TopoDS_Edge& E, const TopoDS_Face& F1, const TopoDS_Face& F2, const Standard_Real TolAng = 1.0e-10);
   
   //! Sorts in  LF the Faces of   S on the  complexity of
   //! their                  surfaces
   //! (Plane,Cylinder,Cone,Sphere,Torus,other)
   Standard_EXPORT static void SortFaces (const TopoDS_Shape& S, TopTools_ListOfShape& LF);
   
   //! Sorts in  LF  the   Faces  of S   on the reverse
   //! complexity       of       their      surfaces
   //! (other,Torus,Sphere,Cone,Cylinder,Plane)
   Standard_EXPORT static void ReverseSortFaces (const TopoDS_Shape& S, TopTools_ListOfShape& LF);
   
   //! Corrects the normals in Poly_Triangulation of faces,
   //! in such way that normals at nodes lying along smooth
   //! edges have the same value on both adjacent triangulations.
   //! Returns TRUE if any correction is done.
   Standard_EXPORT static Standard_Boolean EnsureNormalConsistency (const TopoDS_Shape& S, const Standard_Real theAngTol = 0.001, const Standard_Boolean ForceComputeNormals = Standard_False);
 
   //! Updates value of deflection in Poly_Triangulation of faces
   //! by the maximum deviation measured on existing triangulation.
   Standard_EXPORT static void UpdateDeflection (const TopoDS_Shape& S);
 
   //! Calculates the bounding sphere around the set of vertexes from the theLV list.
   //! Returns the center (theNewCenter) and the radius (theNewTol) of this sphere.
   //! This can be used to construct the new vertex which covers the given set of
   //! other vertices.
   Standard_EXPORT static  void BoundingVertex(const NCollection_List<TopoDS_Shape>& theLV,
                                               gp_Pnt& theNewCenter, Standard_Real& theNewTol);
 
   //! For an edge defined by 3d curve and tolerance and vertices defined by points,
   //! parameters on curve and tolerances,
   //! finds a range of curve between vertices not covered by vertices tolerances.
   //! Returns false if there is no such range. Otherwise, sets theFirst and 
   //! theLast as its bounds.
   Standard_EXPORT static Standard_Boolean FindValidRange
     (const Adaptor3d_Curve& theCurve, const Standard_Real theTolE,
      const Standard_Real theParV1, const gp_Pnt& thePntV1, const Standard_Real theTolV1,
      const Standard_Real theParV2, const gp_Pnt& thePntV2, const Standard_Real theTolV2,
      Standard_Real& theFirst, Standard_Real& theLast);
 
   //! Finds a range of 3d curve of the edge not covered by vertices tolerances.
   //! Returns false if there is no such range. Otherwise, sets theFirst and 
   //! theLast as its bounds.
   Standard_EXPORT static Standard_Boolean FindValidRange
     (const TopoDS_Edge& theEdge, Standard_Real& theFirst, Standard_Real& theLast);
 
 
   //! Enlarges the face on the given value.
   //! @param theF [in] The face to extend
   //! @param theExtVal [in] The extension value
   //! @param theExtUMin [in] Defines whether to extend the face in UMin direction
   //! @param theExtUMax [in] Defines whether to extend the face in UMax direction
   //! @param theExtVMin [in] Defines whether to extend the face in VMin direction
   //! @param theExtVMax [in] Defines whether to extend the face in VMax direction
   //! @param theFExtended [in] The extended face
   Standard_EXPORT static void ExtendFace(const TopoDS_Face& theF,
                                          const Standard_Real theExtVal,
                                          const Standard_Boolean theExtUMin,
                                          const Standard_Boolean theExtUMax,
                                          const Standard_Boolean theExtVMin,
                                          const Standard_Boolean theExtVMax,
                                          TopoDS_Face& theFExtended);
 
 };
 
 #endif // _BRepLib_HeaderFile

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