slideshow/source/engine/transitions/fanwipe.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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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/.
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   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
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  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/matrix/b2dhommatrixtools.hxx>
  23 #include "transitiontools.hxx"
  24 #include "clockwipe.hxx"
  25 #include "fanwipe.hxx"
  26
  27
  28 namespace slideshow {
  29 namespace internal {
  30
  31 ::basegfx::B2DPolyPolygon FanWipe::operator () ( double t )
  32 {
  33     ::basegfx::B2DPolyPolygon res;
  34     ::basegfx::B2DPolygon poly(
  35         ClockWipe::calcCenteredClock(
  36             t / ((m_center && m_single) ? 2.0 : 4.0) ) );
  37
  38     res.append( poly );
  39     // flip on y-axis:
  40     poly.transform(basegfx::utils::createScaleB2DHomMatrix(-1.0, 1.0));
  41     poly.flip();
  42     res.append( poly );
  43
  44     if (m_center)
  45     {
  46         res.transform(basegfx::utils::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5));
  47
  48         if (! m_single)
  49             res.append( flipOnXAxis(res) );
  50     }
  51     else
  52     {
  53         SAL_WARN_IF( m_fanIn, "slideshow.opengl", "FanWipe: m_fanIn is true ?" );
  54         res.transform(basegfx::utils::createScaleTranslateB2DHomMatrix(0.5, 1.0, 0.5, 1.0));
  55     }
  56     return res;
  57 }
  58
  59 }
  60 }
  61
  62 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */