slideshow/source/engine/transitions/fanwipe.cxx

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