slideshow/source/engine/transitions/iriswipe.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/matrix/b2dhommatrixtools.hxx>
  23 #include "iriswipe.hxx"
  24
  25
  26 namespace slideshow {
  27 namespace internal {
  28
  29 ::basegfx::B2DPolyPolygon IrisWipe::operator () ( double t )
  30 {
  31     const double d = ::basegfx::pruneScaleValue(t);
  32     basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5));
  33     aTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(d, d, 0.5, 0.5) * aTransform;
  34
  35     ::basegfx::B2DPolyPolygon res( m_unitRect );
  36     res.transform( aTransform );
  37     return res;
  38 }
  39
  40 }
  41 }
  42
  43 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */