include/opencascade/Aspect_Touch.hxx

0001 // Copyright (c) 2016-2019 OPEN CASCADE SAS
0002 //
0003 // This file is part of Open CASCADE Technology software library.
0004 //
0005 // This library is free software; you can redistribute it and/or modify it under
0006 // the terms of the GNU Lesser General Public License version 2.1 as published
0007 // by the Free Software Foundation, with special exception defined in the file
0008 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0009 // distribution for complete text of the license and disclaimer of any warranty.
0010 //
0011 // Alternatively, this file may be used under the terms of Open CASCADE
0012 // commercial license or contractual agreement.
0013
0014 #ifndef _Aspect_Touch_HeaderFile
0015 #define _Aspect_Touch_HeaderFile
0016
0017 #include <NCollection_Vec2.hxx>
0018
0019 //! Structure holding touch position - original and current location.
0020 class Aspect_Touch
0021 {
0022 public:
0023
0024   NCollection_Vec2<Standard_Real> From;            //!< original touch position
0025   NCollection_Vec2<Standard_Real> To;              //!< current  touch position
0026   Standard_Boolean                IsPreciseDevice; //!< precise device input (e.g. mouse cursor, NOT emulated from touch screen)
0027
0028   //! Return values delta.
0029   NCollection_Vec2<Standard_Real> Delta() const { return To - From; }
0030
0031   //! Empty constructor
0032   Aspect_Touch()
0033   : From (0.0, 0.0), To (0.0, 0.0), IsPreciseDevice (false) {}
0034
0035   //! Constructor with initialization.
0036   Aspect_Touch (const NCollection_Vec2<Standard_Real>& thePnt,
0037                 Standard_Boolean theIsPreciseDevice)
0038   : From (thePnt), To (thePnt), IsPreciseDevice (theIsPreciseDevice) {}
0039
0040   //! Constructor with initialization.
0041   Aspect_Touch (Standard_Real theX, Standard_Real theY,
0042                 Standard_Boolean theIsPreciseDevice)
0043   : From (theX, theY), To (theX, theY), IsPreciseDevice (theIsPreciseDevice) {}
0044
0045 };
0046
0047 #endif // _Aspect_Touch_HeaderFile