slideshow/source/engine/transitions/sweepwipe.cxx

   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 <basegfx/matrix/b2dhommatrix.hxx>
  22 #include <basegfx/numeric/ftools.hxx>
  23 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  24 #include "clockwipe.hxx"
  25 #include "sweepwipe.hxx"
  26 #include "transitiontools.hxx"
  27
  28
  29 namespace slideshow {
  30 namespace internal {
  31
  32 ::basegfx::B2DPolyPolygon SweepWipe::operator () ( double t )
  33 {
  34     t /= 2.0;
  35     if (! m_center)
  36         t /= 2.0;
  37     if (!m_single && !m_oppositeVertical)
  38         t /= 2.0;
  39
  40     ::basegfx::B2DPolygon poly( ClockWipe::calcCenteredClock( 0.25 + t ) );
  41     ::basegfx::B2DHomMatrix aTransform;
  42
  43     if (m_center)
  44     {
  45         aTransform = basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.0);
  46         poly.transform( aTransform );
  47     }
  48     ::basegfx::B2DPolyPolygon res(poly);
  49
  50     if (! m_single)
  51     {
  52         if (m_oppositeVertical)
  53         {
  54             aTransform = basegfx::utils::createScaleB2DHomMatrix(1.0, -1.0);
  55             aTransform.translate( 0.0, 1.0 );
  56             poly.transform( aTransform );
  57             poly.flip();
  58         }
  59         else
  60         {
  61             aTransform = basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5);
  62             aTransform.rotate( M_PI );
  63             aTransform.translate( 0.5, 0.5 );
  64             poly.transform( aTransform );
  65         }
  66         res.append(poly);
  67     }
  68
  69     return m_flipOnYAxis ? flipOnYAxis(res) : res;
  70 }
  71
  72 }
  73 }
  74
  75 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */