slideshow/source/engine/transitions/boxwipe.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 "boxwipe.hxx"
  23
  24
  25 namespace slideshow {
  26 namespace internal {
  27
  28 ::basegfx::B2DPolyPolygon BoxWipe::operator () ( double t )
  29 {
  30     ::basegfx::B2DHomMatrix aTransform;
  31     double d = ::basegfx::pruneScaleValue(t);
  32     if (m_topCentered) {
  33         aTransform.translate( -0.5, 0.0 );
  34         aTransform.scale( d, d );
  35         aTransform.translate( 0.5, 0.0 );
  36     } else {
  37         aTransform.scale( d, d );
  38     }
  39
  40     ::basegfx::B2DPolyPolygon res( m_unitRect );
  41     res.transform( aTransform );
  42     return res;
  43 }
  44
  45 }
  46 }
  47
  48 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */