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0001 // Created on: 1993-03-24
0002 // Created by: JCV
0003 // Copyright (c) 1993-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016 
0017 #ifndef _Geom2d_Geometry_HeaderFile
0018 #define _Geom2d_Geometry_HeaderFile
0019 
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022 
0023 #include <Standard_Transient.hxx>
0024 #include <Standard_Real.hxx>
0025 class gp_Pnt2d;
0026 class gp_Ax2d;
0027 class gp_Vec2d;
0028 class gp_Trsf2d;
0029 
0030 
0031 class Geom2d_Geometry;
0032 DEFINE_STANDARD_HANDLE(Geom2d_Geometry, Standard_Transient)
0033 
0034 
0035 //! The general abstract class Geometry in 2D space describes
0036 //! the common behaviour of all the geometric entities.
0037 //!
0038 //! All the objects derived from this class can be move with a
0039 //! geometric transformation. Only the transformations which
0040 //! doesn't modify the nature of the geometry are available in
0041 //! this package.
0042 //! The method Transform which defines a general transformation
0043 //! is deferred. The other specifics transformations used the
0044 //! method Transform.
0045 //! All the following transformations modify the object itself.
0046 //! Warning
0047 //! Only transformations which do not modify the nature
0048 //! of the geometry can be applied to Geom2d objects:
0049 //! this is the case with translations, rotations,
0050 //! symmetries and scales; this is also the case with
0051 //! gp_Trsf2d composite transformations which are
0052 //! used to define the geometric transformations applied
0053 //! using the Transform or Transformed functions.
0054 //! Note: Geometry defines the "prototype" of the
0055 //! abstract method Transform which is defined for each
0056 //! concrete type of derived object. All other
0057 //! transformations are implemented using the Transform method.
0058 class Geom2d_Geometry : public Standard_Transient
0059 {
0060 
0061 public:
0062 
0063   
0064   //! Performs the symmetrical transformation of a Geometry
0065   //! with respect to the point P which is the center of the
0066   //! symmetry and assigns the result to this geometric object.
0067   Standard_EXPORT void Mirror (const gp_Pnt2d& P);
0068   
0069   //! Performs the symmetrical transformation of a Geometry
0070   //! with respect to an axis placement which is the axis of the symmetry.
0071   Standard_EXPORT void Mirror (const gp_Ax2d& A);
0072   
0073   //! Rotates a Geometry. P is the center of the rotation.
0074   //! Ang is the angular value of the rotation in radians.
0075   Standard_EXPORT void Rotate (const gp_Pnt2d& P, const Standard_Real Ang);
0076   
0077   //! Scales a Geometry. S is the scaling value.
0078   Standard_EXPORT void Scale (const gp_Pnt2d& P, const Standard_Real S);
0079   
0080   //! Translates a Geometry.  V is the vector of the translation.
0081   Standard_EXPORT void Translate (const gp_Vec2d& V);
0082   
0083   //! Translates a Geometry from the point P1 to the point P2.
0084   Standard_EXPORT void Translate (const gp_Pnt2d& P1, const gp_Pnt2d& P2);
0085   
0086   //! Transformation of a geometric object. This tansformation
0087   //! can be a translation, a rotation, a symmetry, a scaling
0088   //! or a complex transformation obtained by combination of
0089   //! the previous elementaries transformations.
0090   //! (see class Transformation of the package Geom2d).
0091   //! The following transformations have the same properties
0092   //! as the previous ones but they don't modified the object
0093   //! itself. A copy of the object is returned.
0094   Standard_EXPORT virtual void Transform (const gp_Trsf2d& T) = 0;
0095   
0096   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Mirrored (const gp_Pnt2d& P) const;
0097   
0098   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Mirrored (const gp_Ax2d& A) const;
0099   
0100   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Rotated (const gp_Pnt2d& P, const Standard_Real Ang) const;
0101   
0102   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Scaled (const gp_Pnt2d& P, const Standard_Real S) const;
0103   
0104   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Transformed (const gp_Trsf2d& T) const;
0105   
0106   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Translated (const gp_Vec2d& V) const;
0107   
0108   Standard_NODISCARD Standard_EXPORT Handle(Geom2d_Geometry) Translated (const gp_Pnt2d& P1, const gp_Pnt2d& P2) const;
0109   
0110   Standard_EXPORT virtual Handle(Geom2d_Geometry) Copy() const = 0;
0111 
0112   //! Dumps the content of me into the stream
0113   Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;
0114 
0115 
0116 
0117 
0118   DEFINE_STANDARD_RTTIEXT(Geom2d_Geometry,Standard_Transient)
0119 
0120 protected:
0121 
0122 
0123 
0124 
0125 private:
0126 
0127 
0128 
0129 
0130 };
0131 
0132 
0133 
0134 
0135 
0136 
0137 
0138 #endif // _Geom2d_Geometry_HeaderFile