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 // Created on: 1993-10-25
 // Created by: Jean Marc LACHAUME
 // 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 _Geom2dHatch_Hatcher_HeaderFile
 #define _Geom2dHatch_Hatcher_HeaderFile
 
 #include <Standard.hxx>
 
 #include <Geom2dAdaptor_Curve.hxx>
 #include <Geom2dHatch_Intersector.hxx>
 #include <Geom2dHatch_Elements.hxx>
 #include <Geom2dHatch_Hatchings.hxx>
 #include <TopAbs_Orientation.hxx>
 #include <HatchGen_ErrorStatus.hxx>
 
 class HatchGen_PointOnHatching;
 class HatchGen_Domain;
 
 // resolve name collisions with X11 headers
 #ifdef Status
   #undef Status
 #endif
 
 class Geom2dHatch_Hatcher
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   //! Returns an empty hatcher.
   Standard_EXPORT Geom2dHatch_Hatcher(const Geom2dHatch_Intersector& Intersector,
                                       const Standard_Real            Confusion2d,
                                       const Standard_Real            Confusion3d,
                                       const Standard_Boolean         KeepPnt = Standard_False,
                                       const Standard_Boolean         KeepSeg = Standard_False);
 
   //! Sets the associated intersector.
   Standard_EXPORT void Intersector(const Geom2dHatch_Intersector& Intersector);
 
   //! Returns the associated intersector.
   const Geom2dHatch_Intersector& Intersector();
 
   //! Returns the associated intersector.
   Geom2dHatch_Intersector& ChangeIntersector();
 
   //! Sets the confusion tolerance.
   Standard_EXPORT void Confusion2d(const Standard_Real Confusion);
 
   //! Returns the 2d confusion tolerance, i.e. the value under
   //! which two points are considered identical in the
   //! parametric space of the hatching.
   Standard_Real Confusion2d() const;
 
   //! Sets the confusion tolerance.
   Standard_EXPORT void Confusion3d(const Standard_Real Confusion);
 
   //! Returns the 3d confusion tolerance, i.e. the value under
   //! which two points are considered identical in the
   //! 3d space of the hatching.
   Standard_Real Confusion3d() const;
 
   //! Sets the above flag.
   Standard_EXPORT void KeepPoints(const Standard_Boolean Keep);
 
   //! Returns the flag about the points consideration.
   Standard_Boolean KeepPoints() const;
 
   //! Sets the above flag.
   Standard_EXPORT void KeepSegments(const Standard_Boolean Keep);
 
   //! Returns the flag about the segments consideration.
   Standard_Boolean KeepSegments() const;
 
   //! Removes all the hatchings and all the elements.
   void Clear();
 
   //! Returns the curve associated to the IndE-th element.
   const Geom2dAdaptor_Curve& ElementCurve(const Standard_Integer IndE) const;
 
   //! Adds an element to the hatcher and returns its index.
   Standard_EXPORT Standard_Integer
     AddElement(const Geom2dAdaptor_Curve& Curve,
                const TopAbs_Orientation   Orientation = TopAbs_FORWARD);
 
   //! Adds an element to the hatcher and returns its index.
   Standard_Integer AddElement(const Handle(Geom2d_Curve)& Curve,
                               const TopAbs_Orientation    Orientation = TopAbs_FORWARD)
   {
     Geom2dAdaptor_Curve aGAC(Curve);
     return AddElement(aGAC, Orientation);
   }
 
   //! Removes the IndE-th element from the hatcher.
   Standard_EXPORT void RemElement(const Standard_Integer IndE);
 
   //! Removes all the elements from the hatcher.
   Standard_EXPORT void ClrElements();
 
   //! Returns the curve associated to the IndH-th hatching.
   const Geom2dAdaptor_Curve& HatchingCurve(const Standard_Integer IndH) const;
 
   //! Adds a hatching to the hatcher and returns its index.
   Standard_EXPORT Standard_Integer AddHatching(const Geom2dAdaptor_Curve& Curve);
 
   //! Removes the IndH-th hatching from the hatcher.
   Standard_EXPORT void RemHatching(const Standard_Integer IndH);
 
   //! Removes all the hatchings from the hatcher.
   Standard_EXPORT void ClrHatchings();
 
   //! Returns the number of intersection points of
   //! the IndH-th hatching.
   Standard_Integer NbPoints(const Standard_Integer IndH) const;
 
   //! Returns the IndP-th intersection point of the
   //! IndH-th hatching.
   const HatchGen_PointOnHatching& Point(const Standard_Integer IndH,
                                         const Standard_Integer IndP) const;
 
   //! Trims all the hatchings of the hatcher by all the
   //! elements of the hatcher.
   Standard_EXPORT void Trim();
 
   //! Adds a hatching to the hatcher and trims it by
   //! the elements already given and returns its index.
   Standard_EXPORT Standard_Integer Trim(const Geom2dAdaptor_Curve& Curve);
 
   //! Trims the IndH-th hatching by the elements
   //! already given.
   Standard_EXPORT void Trim(const Standard_Integer IndH);
 
   //! Computes the domains of all the hatchings.
   Standard_EXPORT void ComputeDomains();
 
   //! Computes the domains of the IndH-th hatching.
   Standard_EXPORT void ComputeDomains(const Standard_Integer IndH);
 
   //! Returns the fact that the intersections were computed
   //! for the IndH-th hatching.
   Standard_Boolean TrimDone(const Standard_Integer IndH) const;
 
   //! Returns the fact that the intersections failed
   //! for the IndH-th hatching.
   Standard_Boolean TrimFailed(const Standard_Integer IndH) const;
 
   //! Returns the fact that the domains were computed
   //! for all the hatchings.
   Standard_Boolean IsDone() const;
 
   //! Returns the fact that the domains were computed
   //! for the IndH-th hatching.
   Standard_Boolean IsDone(const Standard_Integer IndH) const;
 
   //! Returns the status about the IndH-th hatching.
   HatchGen_ErrorStatus Status(const Standard_Integer IndH) const;
 
   //! Returns the number of domains of the IndH-th hatching.
   //! Only ONE "INFINITE" domain means that the hatching is
   //! fully included in the contour defined by the elements.
   Standard_Integer NbDomains(const Standard_Integer IndH) const;
 
   //! Returns the IDom-th domain of the IndH-th hatching.
   Standard_EXPORT const HatchGen_Domain& Domain(const Standard_Integer IndH,
                                                 const Standard_Integer IDom) const;
 
   //! Dump the hatcher.
   Standard_EXPORT void Dump() const;
 
 protected:
   //! Returns the IndE-th element.
   Geom2dHatch_Element& Element(const Standard_Integer IndE);
 
   //! Returns the IndH-th hatching.
   Geom2dHatch_Hatching& Hatching(const Standard_Integer IndH);
 
 private:
   //! Trims the IndH-th hatching of the hatcher by the
   //! IndE-th element.
   Standard_EXPORT Standard_Boolean Trim(const Standard_Integer IndH, const Standard_Integer IndE);
 
   //! Sets the global transition (the before and after
   //! states and segment extremities flags) of the point.
   Standard_EXPORT Standard_Boolean GlobalTransition(HatchGen_PointOnHatching& Point);
 
   Geom2dHatch_Intersector myIntersector;
   Standard_Real           myConfusion2d;
   Standard_Real           myConfusion3d;
   Standard_Boolean        myKeepPoints;
   Standard_Boolean        myKeepSegments;
   Standard_Integer        myNbElements;
   Geom2dHatch_Elements    myElements;
   Standard_Integer        myNbHatchings;
   Geom2dHatch_Hatchings   myHatchings;
 };
 
 #include <Geom2dHatch_Hatcher.lxx>
 
 #endif // _Geom2dHatch_Hatcher_HeaderFile

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