// Created by: Peter KURNEV
// 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 _IntTools_Context_HeaderFile
#define _IntTools_Context_HeaderFile

#include "Standard.hxx"
#include "Standard_Type.hxx"

#include "NCollection_BaseAllocator.hxx"
#include "NCollection_DataMap.hxx"
#include "TopTools_ShapeMapHasher.hxx"
#include "Standard_Integer.hxx"
#include "Precision.hxx"
#include "Standard_Transient.hxx"
#include "TopAbs_State.hxx"
#include "BRepAdaptor_Surface.hxx"
class IntTools_FClass2d;
class TopoDS_Face;
class GeomAPI_ProjectPointOnSurf;
class GeomAPI_ProjectPointOnCurve;
class TopoDS_Edge;
class Geom_Curve;
class IntTools_SurfaceRangeLocalizeData;
class BRepClass3d_SolidClassifier;
class TopoDS_Solid;
class Geom2dHatch_Hatcher;
class gp_Pnt;
class TopoDS_Vertex;
class gp_Pnt2d;
class IntTools_Curve;
class Bnd_Box;
class Bnd_OBB;

//! The intersection Context contains geometrical
//! and topological toolkit (classifiers, projectors, etc).
//! The intersection Context is for caching the tools
//! to increase the performance.
class IntTools_Context : public Standard_Transient
{
public:
  Standard_EXPORT IntTools_Context();
  Standard_EXPORT ~IntTools_Context() override;

  Standard_EXPORT IntTools_Context(const occ::handle<NCollection_BaseAllocator>& theAllocator);

  //! Returns a reference to point classifier
  //! for given face
  Standard_EXPORT IntTools_FClass2d& FClass2d(const TopoDS_Face& aF);

  //! Returns a reference to point projector
  //! for given face
  Standard_EXPORT GeomAPI_ProjectPointOnSurf& ProjPS(const TopoDS_Face& aF);

  //! Returns a reference to point projector
  //! for given edge
  Standard_EXPORT GeomAPI_ProjectPointOnCurve& ProjPC(const TopoDS_Edge& aE);

  //! Returns a reference to point projector
  //! for given curve
  Standard_EXPORT GeomAPI_ProjectPointOnCurve& ProjPT(const occ::handle<Geom_Curve>& aC);

  //! Returns a reference to surface localization data
  //! for given face
  Standard_EXPORT IntTools_SurfaceRangeLocalizeData& SurfaceData(const TopoDS_Face& aF);

  //! Returns a reference to solid classifier
  //! for given solid
  Standard_EXPORT BRepClass3d_SolidClassifier& SolidClassifier(const TopoDS_Solid& aSolid);

  //! Returns a reference to 2D hatcher
  //! for given face
  Standard_EXPORT Geom2dHatch_Hatcher& Hatcher(const TopoDS_Face& aF);

  //! Returns a reference to surface adaptor for given face
  Standard_EXPORT BRepAdaptor_Surface& SurfaceAdaptor(const TopoDS_Face& theFace);

  //! Builds and stores an Oriented Bounding Box for the shape.
  //! Returns a reference to OBB.
  Standard_EXPORT Bnd_OBB& OBB(const TopoDS_Shape& theShape,
                               const double        theFuzzyValue = Precision::Confusion());

  //! Computes the boundaries of the face using surface adaptor
  Standard_EXPORT void UVBounds(const TopoDS_Face& theFace,
                                double&            UMin,
                                double&            UMax,
                                double&            VMin,
                                double&            VMax);

  //! Computes parameter of the Point theP on
  //! the edge aE.
  //! Returns zero if the distance between point
  //! and edge is less than sum of tolerance value of edge and theTopP,
  //! otherwise and for following conditions returns
  //! negative value
  //! 1. the edge is degenerated (-1)
  //! 2. the edge does not contain 3d curve and pcurves (-2)
  //! 3. projection algorithm failed (-3)
  Standard_EXPORT int ComputePE(const gp_Pnt&      theP,
                                const double       theTolP,
                                const TopoDS_Edge& theE,
                                double&            theT,
                                double&            theDist);

  //! Computes parameter of the vertex aV on
  //! the edge aE and correct tolerance value for
  //! the vertex on the edge.
  //! Returns zero if the distance between vertex
  //! and edge is less than sum of tolerances and the fuzzy value,
  //! otherwise and for following conditions returns
  //! negative value:
  //! 1. the edge is degenerated (-1)
  //! 2. the edge does not contain 3d curve and pcurves (-2)
  //! 3. projection algorithm failed (-3)
  Standard_EXPORT int ComputeVE(const TopoDS_Vertex& theV,
                                const TopoDS_Edge&   theE,
                                double&              theT,
                                double&              theTol,
                                const double         theFuzz = Precision::Confusion());

  //! Computes UV parameters of the vertex aV on face aF
  //! and correct tolerance value for the vertex on the face.
  //! Returns zero if the distance between vertex and face is
  //! less than or equal the sum of tolerances and the fuzzy value
  //! and the projection point lays inside boundaries of the face.
  //! For following conditions returns negative value
  //! 1. projection algorithm failed (-1)
  //! 2. distance is more than sum of tolerances (-2)
  //! 3. projection point out or on the boundaries of face (-3)
  Standard_EXPORT int ComputeVF(const TopoDS_Vertex& theVertex,
                                const TopoDS_Face&   theFace,
                                double&              theU,
                                double&              theV,
                                double&              theTol,
                                const double         theFuzz = Precision::Confusion());

  //! Returns the state of the point aP2D
  //! relative to face aF
  Standard_EXPORT TopAbs_State StatePointFace(const TopoDS_Face& aF, const gp_Pnt2d& aP2D);

  //! Returns true if the point aP2D is
  //! inside the boundaries of the face aF,
  //! otherwise returns false
  Standard_EXPORT bool IsPointInFace(const TopoDS_Face& aF, const gp_Pnt2d& aP2D);

  //! Returns true if the point aP2D is
  //! inside the boundaries of the face aF,
  //! otherwise returns false
  Standard_EXPORT bool IsPointInFace(const gp_Pnt& aP3D, const TopoDS_Face& aF, const double aTol);

  //! Returns true if the point aP2D is
  //! inside or on the boundaries of aF
  Standard_EXPORT bool IsPointInOnFace(const TopoDS_Face& aF, const gp_Pnt2d& aP2D);

  //! Returns true if the distance between point aP3D
  //! and face aF is less or equal to tolerance aTol
  //! and projection point is inside or on the boundaries
  //! of the face aF
  Standard_EXPORT bool IsValidPointForFace(const gp_Pnt&      aP3D,
                                           const TopoDS_Face& aF,
                                           const double       aTol);

  //! Returns true if IsValidPointForFace returns true
  //! for both face aF1 and aF2
  Standard_EXPORT bool IsValidPointForFaces(const gp_Pnt&      aP3D,
                                            const TopoDS_Face& aF1,
                                            const TopoDS_Face& aF2,
                                            const double       aTol);

  //! Returns true if IsValidPointForFace returns true
  //! for some 3d point that lay on the curve aIC bounded by
  //! parameters aT1 and aT2
  Standard_EXPORT bool IsValidBlockForFace(const double          aT1,
                                           const double          aT2,
                                           const IntTools_Curve& aIC,
                                           const TopoDS_Face&    aF,
                                           const double          aTol);

  //! Returns true if IsValidBlockForFace returns true
  //! for both faces aF1 and aF2
  Standard_EXPORT bool IsValidBlockForFaces(const double          aT1,
                                            const double          aT2,
                                            const IntTools_Curve& aIC,
                                            const TopoDS_Face&    aF1,
                                            const TopoDS_Face&    aF2,
                                            const double          aTol);

  //! Computes parameter of the vertex aV on
  //! the curve aIC.
  //! Returns true if the distance between vertex and
  //! curve is less than sum of tolerance of aV and aTolC,
  //! otherwise or if projection algorithm failed
  //! returns false (in this case aT isn't significant)
  Standard_EXPORT bool IsVertexOnLine(const TopoDS_Vertex&  aV,
                                      const IntTools_Curve& aIC,
                                      const double          aTolC,
                                      double&               aT);

  //! Computes parameter of the vertex aV on
  //! the curve aIC.
  //! Returns true if the distance between vertex and
  //! curve is less than sum of tolerance of aV and aTolC,
  //! otherwise or if projection algorithm failed
  //! returns false (in this case aT isn't significant)
  Standard_EXPORT bool IsVertexOnLine(const TopoDS_Vertex&  aV,
                                      const double          aTolV,
                                      const IntTools_Curve& aIC,
                                      const double          aTolC,
                                      double&               aT);

  //! Computes parameter of the point aP on
  //! the edge aE.
  //! Returns false if projection algorithm failed
  //! other wiese returns true.
  Standard_EXPORT bool ProjectPointOnEdge(const gp_Pnt& aP, const TopoDS_Edge& aE, double& aT);

  Standard_EXPORT Bnd_Box& BndBox(const TopoDS_Shape& theS);

  //! Returns true if the solid <theFace> has
  //! infinite bounds
  Standard_EXPORT bool IsInfiniteFace(const TopoDS_Face& theFace);

  //! Sets tolerance to be used for projection of point on surface.
  //! Clears map of already cached projectors in order to maintain
  //! correct value for all projectors
  Standard_EXPORT void SetPOnSProjectionTolerance(const double theValue);

  DEFINE_STANDARD_RTTIEXT(IntTools_Context, Standard_Transient)

protected:
  occ::handle<NCollection_BaseAllocator>                                         myAllocator;
  NCollection_DataMap<TopoDS_Shape, IntTools_FClass2d*, TopTools_ShapeMapHasher> myFClass2dMap;
  NCollection_DataMap<TopoDS_Shape, GeomAPI_ProjectPointOnSurf*, TopTools_ShapeMapHasher>
    myProjPSMap;
  NCollection_DataMap<TopoDS_Shape, GeomAPI_ProjectPointOnCurve*, TopTools_ShapeMapHasher>
    myProjPCMap;
  NCollection_DataMap<TopoDS_Shape, BRepClass3d_SolidClassifier*, TopTools_ShapeMapHasher>
                                                                                   mySClassMap;
  NCollection_DataMap<occ::handle<Geom_Curve>, GeomAPI_ProjectPointOnCurve*>       myProjPTMap;
  NCollection_DataMap<TopoDS_Shape, Geom2dHatch_Hatcher*, TopTools_ShapeMapHasher> myHatcherMap;
  NCollection_DataMap<TopoDS_Shape, IntTools_SurfaceRangeLocalizeData*, TopTools_ShapeMapHasher>
                                                                                   myProjSDataMap;
  NCollection_DataMap<TopoDS_Shape, Bnd_Box*, TopTools_ShapeMapHasher>             myBndBoxDataMap;
  NCollection_DataMap<TopoDS_Shape, BRepAdaptor_Surface*, TopTools_ShapeMapHasher> mySurfAdaptorMap;
  // clang-format off
  NCollection_DataMap<TopoDS_Shape, Bnd_OBB*, TopTools_ShapeMapHasher> myOBBMap; // Map of oriented bounding boxes
  // clang-format on
  int    myCreateFlag;
  double myPOnSTolerance;

private:
  //! Clears map of already cached projectors.
  Standard_EXPORT void clearCachedPOnSProjectors();
};

#endif // _IntTools_Context_HeaderFile