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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  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 #include "transitiontools.hxx"
  25
  26
  27 namespace slideshow {
  28 namespace internal {
  29
  30 ::basegfx::B2DPolyPolygon EllipseWipe::operator () ( double t )
  31 {
  32     ::basegfx::B2DPoint rCenter(0.5,0.5);
  33     double fRadius = ::basegfx::pruneScaleValue( t * M_SQRT2 / 2.0 );
  34
  35     if( mnSubType == com::sun::star::animations::TransitionSubType::VERTICAL )
  36     {
  37         // oval:
  38         ::basegfx::B2DPolygon poly (
  39             ::basegfx::utils::createPolygonFromEllipse( rCenter, fRadius*2, fRadius ) ); //Horizontal Ellipse is rotated by 90 degress
  40         return ::basegfx::B2DPolyPolygon( poly );
  41     }
  42     else
  43     {
  44          // circle:
  45         ::basegfx::B2DPolygon poly(
  46             ::basegfx::utils::createPolygonFromCircle( rCenter, fRadius ) );
  47         return ::basegfx::B2DPolyPolygon( poly );
  48     }
  49 }
  50
  51 }
  52 }
  53
  54 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */