Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include <numeric>
      21             : 
      22             : #include <tools/gen.hxx>
      23             : #include <basegfx/numeric/ftools.hxx>
      24             : 
      25      129816 : void Point::RotateAround( long& rX, long& rY,
      26             :                           short nOrientation ) const
      27             : {
      28      129816 :     const long nOriginX = X();
      29      129816 :     const long nOriginY = Y();
      30             : 
      31      129816 :     if ( (nOrientation >= 0) && !(nOrientation % 900) )
      32             :     {
      33       17861 :         if ( (nOrientation >= 3600) )
      34           0 :             nOrientation %= 3600;
      35             : 
      36       17861 :         if ( nOrientation )
      37             :         {
      38       17861 :             rX -= nOriginX;
      39       17861 :             rY -= nOriginY;
      40             : 
      41       17861 :             if ( nOrientation == 900 )
      42             :             {
      43       14793 :                 long nTemp = rX;
      44       14793 :                 rX = rY;
      45       14793 :                 rY = -nTemp;
      46             :             }
      47        3068 :             else if ( nOrientation == 1800 )
      48             :             {
      49           0 :                 rX = -rX;
      50           0 :                 rY = -rY;
      51             :             }
      52             :             else /* ( nOrientation == 2700 ) */
      53             :             {
      54        3068 :                 long nTemp = rX;
      55        3068 :                 rX = -rY;
      56        3068 :                 rY = nTemp;
      57             :             }
      58             : 
      59       17861 :             rX += nOriginX;
      60       17861 :             rY += nOriginY;
      61       17861 :         }
      62             :     }
      63             :     else
      64             :     {
      65      111955 :         double nRealOrientation = nOrientation*F_PI1800;
      66      111955 :         double nCos = cos( nRealOrientation );
      67      111955 :         double nSin = sin( nRealOrientation );
      68             : 
      69             :         // Translation...
      70      111955 :         long nX = rX-nOriginX;
      71      111955 :         long nY = rY-nOriginY;
      72             : 
      73             :         // Rotation...
      74      111955 :         rX = +((long)(nCos*nX + nSin*nY)) + nOriginX;
      75      111955 :         rY = -((long)(nSin*nX - nCos*nY)) + nOriginY;
      76             :     }
      77      129816 : }
      78             : 
      79             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */