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 // Created on: 2014-05-22
 // Created by: Varvara POSKONINA
 // Copyright (c) 2005-2014 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 _SelectMgr_TriangularFrustum_HeaderFile
 #define _SelectMgr_TriangularFrustum_HeaderFile
 
 #include <SelectMgr_Frustum.hxx>
 
 //! This class contains representation of triangular selecting frustum, created in case
 //! of polyline selection, and algorithms for overlap detection between selecting frustum and
 //! sensitive entities. Overlap detection tests are implemented according to the terms of separating
 //! axis theorem (SAT). NOTE: the object of this class can be created only as part of
 //! SelectMgr_TriangularFrustumSet.
 class SelectMgr_TriangularFrustum : public SelectMgr_Frustum<3>
 {
 public:
   //! Auxiliary structure to define selection triangle
   struct SelectionTriangle
   {
     gp_Pnt2d Points[3];
   };
 
 public:
   //! Destructor.
   Standard_EXPORT ~SelectMgr_TriangularFrustum() override;
 
   //! Initializes selection triangle by input points
   Standard_EXPORT void Init(const gp_Pnt2d& theP1, const gp_Pnt2d& theP2, const gp_Pnt2d& theP3);
 
   //! Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3
   //! projections onto near and far view frustum planes (only for triangular frustums)
   //! NOTE: it should be called after Init() method
   Standard_EXPORT void Build() override;
 
   //! Returns FALSE (not applicable to this volume).
   bool IsScalable() const override { return false; }
 
   //! Returns a copy of the frustum transformed according to the matrix given
   Standard_EXPORT occ::handle<SelectMgr_BaseIntersector> ScaleAndTransform(
     const int                                    theScale,
     const gp_GTrsf&                              theTrsf,
     const occ::handle<SelectMgr_FrustumBuilder>& theBuilder) const override;
 
   //! Returns a copy of the frustum using the given frustum builder configuration.
   //! Returned frustum should be re-constructed before being used.
   //! @param[in] theBuilder  argument that represents corresponding settings for re-constructing
   //! transformed frustum from scratch;
   //!                        should NOT be NULL.
   //! @return a copy of the frustum with the input builder assigned
   Standard_EXPORT occ::handle<SelectMgr_BaseIntersector> CopyWithBuilder(
     const occ::handle<SelectMgr_FrustumBuilder>& theBuilder) const override;
 
 public: //! @name SAT Tests for different objects
   //! SAT intersection test between defined volume and given axis-aligned box
   Standard_EXPORT bool OverlapsBox(const NCollection_Vec3<double>& theMinPnt,
                                    const NCollection_Vec3<double>& theMaxPnt,
                                    const SelectMgr_ViewClipRange&  theClipRange,
                                    SelectBasics_PickResult&        thePickResult) const override;
 
   //! Returns true if selecting volume is overlapped by axis-aligned bounding box
   //! with minimum corner at point theMinPt and maximum at point theMaxPt
   Standard_EXPORT bool OverlapsBox(const NCollection_Vec3<double>& theMinPt,
                                    const NCollection_Vec3<double>& theMaxPt,
                                    bool*                           theInside) const override;
 
   //! Intersection test between defined volume and given point
   Standard_EXPORT bool OverlapsPoint(const gp_Pnt&                  thePnt,
                                      const SelectMgr_ViewClipRange& theClipRange,
                                      SelectBasics_PickResult&       thePickResult) const override;
 
   //! Always returns FALSE (not applicable to this selector).
   bool OverlapsPoint(const gp_Pnt&) const override { return false; }
 
   //! SAT intersection test between defined volume and given ordered set of points,
   //! representing line segments. The test may be considered of interior part or
   //! boundary line defined by segments depending on given sensitivity type
   Standard_EXPORT bool OverlapsPolygon(const NCollection_Array1<gp_Pnt>& theArrayOfPnts,
                                        Select3D_TypeOfSensitivity        theSensType,
                                        const SelectMgr_ViewClipRange&    theClipRange,
                                        SelectBasics_PickResult& thePickResult) const override;
 
   //! Checks if line segment overlaps selecting frustum
   Standard_EXPORT bool OverlapsSegment(const gp_Pnt&                  thePnt1,
                                        const gp_Pnt&                  thePnt2,
                                        const SelectMgr_ViewClipRange& theClipRange,
                                        SelectBasics_PickResult&       thePickResult) const override;
 
   //! SAT intersection test between defined volume and given triangle. The test may
   //! be considered of interior part or boundary line defined by triangle vertices
   //! depending on given sensitivity type
   Standard_EXPORT bool OverlapsTriangle(const gp_Pnt&                  thePnt1,
                                         const gp_Pnt&                  thePnt2,
                                         const gp_Pnt&                  thePnt3,
                                         Select3D_TypeOfSensitivity     theSensType,
                                         const SelectMgr_ViewClipRange& theClipRange,
                                         SelectBasics_PickResult& thePickResult) const override;
 
   //! Returns true if selecting volume is overlapped by sphere with center theCenter
   //! and radius theRadius
   Standard_EXPORT bool OverlapsSphere(const gp_Pnt& theCenter,
                                       const double  theRadius,
                                       bool*         theInside = nullptr) const override;
 
   //! Returns true if selecting volume is overlapped by sphere with center theCenter
   //! and radius theRadius
   Standard_EXPORT bool OverlapsSphere(const gp_Pnt&                  theCenter,
                                       const double                   theRadius,
                                       const SelectMgr_ViewClipRange& theClipRange,
                                       SelectBasics_PickResult&       thePickResult) const override;
 
   //! Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses
   //! theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf.
   Standard_EXPORT bool OverlapsCylinder(const double                   theBottomRad,
                                         const double                   theTopRad,
                                         const double                   theHeight,
                                         const gp_Trsf&                 theTrsf,
                                         const bool                     theIsHollow,
                                         const SelectMgr_ViewClipRange& theClipRange,
                                         SelectBasics_PickResult& thePickResult) const override;
 
   //! Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses
   //! theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf.
   Standard_EXPORT bool OverlapsCylinder(const double   theBottomRad,
                                         const double   theTopRad,
                                         const double   theHeight,
                                         const gp_Trsf& theTrsf,
                                         const bool     theIsHollow,
                                         bool*          theInside = nullptr) const override;
 
   //! Returns true if selecting volume is overlapped by circle with radius theRadius,
   //! boolean theIsFilled and transformation to apply theTrsf.
   //! The position and orientation of the circle are specified
   //! via theTrsf transformation for gp::XOY() with center in gp::Origin().
   Standard_EXPORT bool OverlapsCircle(const double                   theRadius,
                                       const gp_Trsf&                 theTrsf,
                                       const bool                     theIsFilled,
                                       const SelectMgr_ViewClipRange& theClipRange,
                                       SelectBasics_PickResult&       thePickResult) const override;
 
   //! Returns true if selecting volume is overlapped by circle with radius theRadius,
   //! boolean theIsFilled and transformation to apply theTrsf.
   //! The position and orientation of the circle are specified
   //! via theTrsf transformation for gp::XOY() with center in gp::Origin().
   Standard_EXPORT bool OverlapsCircle(const double   theRadius,
                                       const gp_Trsf& theTrsf,
                                       const bool     theIsFilled,
                                       bool*          theInside = nullptr) const override;
 
 public:
   //! Nullifies the handle to corresponding builder instance to prevent memory leaks
   Standard_EXPORT void Clear();
 
   //! Stores plane equation coefficients (in the following form:
   //! Ax + By + Cz + D = 0) to the given vector
   Standard_EXPORT void GetPlanes(
     NCollection_DynamicArray<NCollection_Vec4<double>>& thePlaneEquations) const override;
 
   //! Dumps the content of me into the stream
   Standard_EXPORT void DumpJson(Standard_OStream& theOStream, int theDepth = -1) const override;
 
 protected:
   //! Creates an empty triangular frustum.
   Standard_EXPORT SelectMgr_TriangularFrustum();
 
 private:
   void cacheVertexProjections(SelectMgr_TriangularFrustum* theFrustum) const;
 
 protected:
   // clang-format off
   SelectionTriangle mySelTriangle; //!< parameters of selection triangle (it is used to build triangle frustum)
   // clang-format on
 
 public:
   DEFINE_STANDARD_RTTIEXT(SelectMgr_TriangularFrustum, SelectMgr_Frustum<3>)
   friend class SelectMgr_TriangularFrustumSet;
 };
 
 #endif // _SelectMgr_TriangularFrustum_HeaderFile

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