include/basegfx/point/b2ipoint.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  15  *   License, Version 2.0 (the "License"); you may not use this file
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  18  */
  19
  20 #pragma once
  21
  22 #include <basegfx/tuple/b2ituple.hxx>
  23
  24 namespace basegfx
  25 {
  26     class B2DHomMatrix;
  27
  28     /** Base Point class with two sal_Int32 values
  29
  30         This class derives all operators and common handling for
  31         a 2D data class from B2ITuple. All necessary extensions
  32         which are special for points will be added here.
  33
  34         @see B2ITuple
  35     */
  36     class SAL_WARN_UNUSED B2IPoint : public ::basegfx::B2ITuple
  37     {
  38     public:
  39         /** Create a 2D Point
  40
  41             The point is initialized to (0, 0)
  42         */
  43         B2IPoint()
  44         :   B2ITuple()
  45         {}
  46
  47         /** Create a 2D Point
  48
  49             @param nX
  50             This parameter is used to initialize the X-coordinate
  51             of the 2D Point.
  52
  53             @param nY
  54             This parameter is used to initialize the Y-coordinate
  55             of the 2D Point.
  56         */
  57         B2IPoint(sal_Int32 nX, sal_Int32 nY)
  58         :   B2ITuple(nX, nY)
  59         {}
  60
  61         /** constructor with tuple to allow copy-constructing
  62             from B2ITuple-based classes
  63         */
  64         B2IPoint(const ::basegfx::B2ITuple& rTuple)
  65         :   B2ITuple(rTuple)
  66         {}
  67
  68         /** *=operator to allow usage from B2IPoint, too
  69         */
  70         B2IPoint& operator*=( const B2IPoint& rPnt )
  71         {
  72             mnX *= rPnt.mnX;
  73             mnY *= rPnt.mnY;
  74             return *this;
  75         }
  76
  77         /** *=operator to allow usage from B2IPoint, too
  78         */
  79         B2IPoint& operator*=(sal_Int32 t)
  80         {
  81             mnX *= t;
  82             mnY *= t;
  83             return *this;
  84         }
  85
  86         /** assignment operator to allow assigning the results
  87             of B2ITuple calculations
  88         */
  89         B2IPoint& operator=( const ::basegfx::B2ITuple& rPoint );
  90
  91         /** Transform point by given transformation matrix.
  92
  93             The translational components of the matrix are, in
  94             contrast to B2DVector, applied.
  95         */
  96         B2IPoint& operator*=( const ::basegfx::B2DHomMatrix& rMat );
  97     };
  98 } // end of namespace basegfx
  99
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