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             : 
      21             : #include <canvas/debug.hxx>
      22             : #include <basegfx/matrix/b2dhommatrix.hxx>
      23             : #include "checkerboardwipe.hxx"
      24             : 
      25             : 
      26             : namespace slideshow {
      27             : namespace internal {
      28             : 
      29           0 : ::basegfx::B2DPolyPolygon CheckerBoardWipe::operator () ( double t )
      30             : {
      31           0 :     const double d = (1.0 / m_unitsPerEdge);
      32           0 :     ::basegfx::B2DHomMatrix aTransform;
      33           0 :     aTransform.scale( ::basegfx::pruneScaleValue( d * 2.0 * t ),
      34           0 :                       ::basegfx::pruneScaleValue( d ) );
      35             : 
      36           0 :     ::basegfx::B2DPolyPolygon res;
      37           0 :     for ( sal_Int32 i = m_unitsPerEdge; i--; )
      38             :     {
      39           0 :         ::basegfx::B2DHomMatrix transform( aTransform );
      40           0 :         if ((i % 2) == 1) // odd line
      41           0 :             transform.translate( -d, 0.0 );
      42           0 :         for ( sal_Int32 j = (m_unitsPerEdge / 2) + 1; j--; )
      43             :         {
      44           0 :             ::basegfx::B2DPolyPolygon poly( m_unitRect );
      45           0 :             poly.transform( transform );
      46           0 :             res.append( poly );
      47           0 :             transform.translate( d * 2.0, 0.0 );
      48           0 :         }
      49           0 :         aTransform.translate( 0.0, d ); // next line
      50           0 :     }
      51           0 :     return res;
      52             : }
      53             : 
      54             : }
      55             : }
      56             : 
      57             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */