slideshow/source/engine/transitions/fanwipe.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.
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   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 <basegfx/matrix/b2dhommatrixtools.hxx>
  24 #include "transitiontools.hxx"
  25 #include "clockwipe.hxx"
  26 #include "fanwipe.hxx"
  27
  28
  29 namespace slideshow {
  30 namespace internal {
  31
  32 ::basegfx::B2DPolyPolygon FanWipe::operator () ( double t )
  33 {
  34     ::basegfx::B2DPolyPolygon res;
  35     ::basegfx::B2DPolygon poly(
  36         ClockWipe::calcCenteredClock(
  37             t / ((m_center && m_single) ? 2.0 : 4.0) ) );
  38
  39     res.append( poly );
  40     // flip on y-axis:
  41     poly.transform(basegfx::tools::createScaleB2DHomMatrix(-1.0, 1.0));
  42     poly.flip();
  43     res.append( poly );
  44
  45     if (m_center)
  46     {
  47         res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5));
  48
  49         if (! m_single)
  50             res.append( flipOnXAxis(res) );
  51     }
  52     else
  53     {
  54         SAL_WARN_IF( m_fanIn, "slideshow.opengl", "FanWipe: m_fanIn is true ?" );
  55         res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 1.0, 0.5, 1.0));
  56     }
  57     return res;
  58 }
  59
  60 }
  61 }
  62
  63 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */