slideshow/source/engine/transitions/ellipsewipe.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 <canvas/debug.hxx>
  22 #include <basegfx/numeric/ftools.hxx>
  23 #include <basegfx/polygon/b2dpolygontools.hxx>
  24 #include "ellipsewipe.hxx"
  25 #include "transitiontools.hxx"
  26
  27
  28 namespace slideshow {
  29 namespace internal {
  30
  31 ::basegfx::B2DPolyPolygon EllipseWipe::operator () ( double t )
  32 {
  33     // currently only circle:
  34     ::basegfx::B2DPolygon poly(
  35         ::basegfx::tools::createPolygonFromCircle(
  36             ::basegfx::B2DPoint( 0.5, 0.5 ),
  37             ::basegfx::pruneScaleValue( t * M_SQRT2 / 2.0 ) ) );
  38     return ::basegfx::B2DPolyPolygon( poly );
  39 }
  40
  41 }
  42 }
  43
  44 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */