slideshow/source/engine/transitions/ellipsewipe.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
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   9  * This file incorporates work covered by the following license notice:
  10  *
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  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 #include <com/sun/star/animations/TransitionSubType.hpp>
  21 #include <basegfx/numeric/ftools.hxx>
  22 #include <basegfx/polygon/b2dpolygontools.hxx>
  23 #include "ellipsewipe.hxx"
  24
  25
  26 namespace slideshow::internal {
  27
  28 ::basegfx::B2DPolyPolygon EllipseWipe::operator () ( double t )
  29 {
  30     ::basegfx::B2DPoint rCenter(0.5,0.5);
  31     double fRadius = ::basegfx::pruneScaleValue( t * M_SQRT2 / 2.0 );
  32
  33     if( mnSubType == css::animations::TransitionSubType::VERTICAL )
  34     {
  35         // oval:
  36         ::basegfx::B2DPolygon poly (
  37             ::basegfx::utils::createPolygonFromEllipse( rCenter, fRadius*2, fRadius ) ); //Horizontal Ellipse is rotated by 90 degrees
  38         return ::basegfx::B2DPolyPolygon( poly );
  39     }
  40     else
  41     {
  42          // circle:
  43         ::basegfx::B2DPolygon poly(
  44             ::basegfx::utils::createPolygonFromCircle( rCenter, fRadius ) );
  45         return ::basegfx::B2DPolyPolygon( poly );
  46     }
  47 }
  48
  49 }
  50
  51 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */