1 // Created on: 1991-01-08 2 // Created by: Didier Piffault 3 // Copyright (c) 1991-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 8 // This library is free software; you can redistribute it and/or modify it under 9 // the terms of the GNU Lesser General Public License version 2.1 as published 10 // by the Free Software Foundation, with special exception defined in the file 11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 12 // distribution for complete text of the license and disclaimer of any warranty. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _Bnd_B2d_HeaderFile 18 #define _Bnd_B2d_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_DefineAlloc.hxx> 22 #include <Standard_Handle.hxx> 23 24 #include <Standard_Real.hxx> 25 #include <Standard_Boolean.hxx> 26 #include <gp_XY.hxx> 27 class gp_XY; 28 class gp_Pnt2d; 29 class gp_Trsf2d; 30 class gp_Ax2d; 31 32 33 34 class Bnd_B2d 35 { 36 public: 37 38 DEFINE_STANDARD_ALLOC 39 40 41 //! Empty constructor. 42 Bnd_B2d(); 43 44 //! Constructor. 45 Bnd_B2d(const gp_XY& theCenter, const gp_XY& theHSize); 46 47 //! Returns True if the box is void (non-initialized). 48 Standard_Boolean IsVoid() const; 49 50 //! Reset the box data. 51 void Clear(); 52 53 //! Update the box by a point. 54 Standard_EXPORT void Add (const gp_XY& thePnt); 55 56 //! Update the box by a point. 57 void Add (const gp_Pnt2d& thePnt); 58 59 //! Update the box by another box. 60 void Add (const Bnd_B2d& theBox); 61 62 //! Query a box corner: (Center - HSize). You must make sure that 63 //! the box is NOT VOID (see IsVoid()), otherwise the method returns 64 //! irrelevant result. 65 gp_XY CornerMin() const; 66 67 //! Query a box corner: (Center + HSize). You must make sure that 68 //! the box is NOT VOID (see IsVoid()), otherwise the method returns 69 //! irrelevant result. 70 gp_XY CornerMax() const; 71 72 //! Query the square diagonal. If the box is VOID (see method IsVoid()) 73 //! then a very big real value is returned. 74 Standard_Real SquareExtent() const; 75 76 //! Extend the Box by the absolute value of theDiff. 77 void Enlarge (const Standard_Real theDiff); 78 79 //! Limit the Box by the internals of theOtherBox. 80 //! Returns True if the limitation takes place, otherwise False 81 //! indicating that the boxes do not intersect. 82 Standard_EXPORT Standard_Boolean Limit (const Bnd_B2d& theOtherBox); 83 84 //! Transform the bounding box with the given transformation. 85 //! The resulting box will be larger if theTrsf contains rotation. 86 Standard_NODISCARD Standard_EXPORT Bnd_B2d Transformed (const gp_Trsf2d& theTrsf) const; 87 88 //! Check the given point for the inclusion in the Box. 89 //! Returns True if the point is outside. 90 Standard_Boolean IsOut (const gp_XY& thePnt) const; 91 92 //! Check a circle for the intersection with the current box. 93 //! Returns True if there is no intersection between boxes. 94 Standard_EXPORT Standard_Boolean IsOut (const gp_XY& theCenter, const Standard_Real theRadius, const Standard_Boolean isCircleHollow = Standard_False) const; 95 96 //! Check the given box for the intersection with the current box. 97 //! Returns True if there is no intersection between boxes. 98 Standard_Boolean IsOut (const Bnd_B2d& theOtherBox) const; 99 100 //! Check the given box oriented by the given transformation 101 //! for the intersection with the current box. 102 //! Returns True if there is no intersection between boxes. 103 Standard_EXPORT Standard_Boolean IsOut (const Bnd_B2d& theOtherBox, const gp_Trsf2d& theTrsf) const; 104 105 //! Check the given Line for the intersection with the current box. 106 //! Returns True if there is no intersection. 107 Standard_EXPORT Standard_Boolean IsOut (const gp_Ax2d& theLine) const; 108 109 //! Check the Segment defined by the couple of input points 110 //! for the intersection with the current box. 111 //! Returns True if there is no intersection. 112 Standard_EXPORT Standard_Boolean IsOut (const gp_XY& theP0, const gp_XY& theP1) const; 113 114 //! Check that the box 'this' is inside the given box 'theBox'. Returns 115 //! True if 'this' box is fully inside 'theBox'. 116 Standard_Boolean IsIn (const Bnd_B2d& theBox) const; 117 118 //! Check that the box 'this' is inside the given box 'theBox' 119 //! transformed by 'theTrsf'. Returns True if 'this' box is fully 120 //! inside the transformed 'theBox'. 121 Standard_EXPORT Standard_Boolean IsIn (const Bnd_B2d& theBox, const gp_Trsf2d& theTrsf) const; 122 123 //! Set the Center coordinates 124 void SetCenter (const gp_XY& theCenter); 125 126 //! Set the HSize (half-diagonal) coordinates. 127 //! All components of theHSize must be non-negative. 128 void SetHSize (const gp_XY& theHSize); 129 130 131 132 133 protected: 134 135 136 137 Standard_Real myCenter[2]; 138 Standard_Real myHSize[2]; 139 140 141 private: 142 143 144 145 146 147 }; 148 149 #define RealType Standard_Real 150 #define RealType_hxx <Standard_Real.hxx> 151 #define Bnd_B2x Bnd_B2d 152 #define Bnd_B2x_hxx <Bnd_B2d.hxx> 153 154 #include <Bnd_B2x.lxx> 155 156 #undef RealType 157 #undef RealType_hxx 158 #undef Bnd_B2x 159 #undef Bnd_B2x_hxx 160 161 162 163 164 #endif // _Bnd_B2d_HeaderFile 165