slideshow/source/engine/transitions/figurewipe.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.
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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
   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/matrix/b2dhommatrix.hxx>
  24 #include <basegfx/point/b2dpoint.hxx>
  25 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  26 #include "transitiontools.hxx"
  27 #include "figurewipe.hxx"
  28
  29
  30 namespace slideshow {
  31 namespace internal {
  32
  33 ::basegfx::B2DPolyPolygon FigureWipe::operator () ( double t )
  34 {
  35     ::basegfx::B2DPolyPolygon res(m_figure);
  36     res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(t, t, 0.5, 0.5));
  37     return res;
  38 }
  39
  40 FigureWipe * FigureWipe::createTriangleWipe()
  41 {
  42     const double s60 = sin( basegfx::deg2rad(60.0) );
  43     const double s30 = sin( basegfx::deg2rad(30.0) );
  44     ::basegfx::B2DPolygon figure;
  45     figure.append( ::basegfx::B2DPoint( 0.5 + s30, 0.5 ) );
  46     figure.append( ::basegfx::B2DPoint( 0.0, -0.5 - s60 ) );
  47     figure.append( ::basegfx::B2DPoint( -0.5 - s30, 0.5 ) );
  48     figure.setClosed(true);
  49     return new FigureWipe(figure);
  50 }
  51
  52 FigureWipe * FigureWipe::createArrowHeadWipe()
  53 {
  54     const double s60 = sin( basegfx::deg2rad(60.0) );
  55     const double s30 = sin( basegfx::deg2rad(30.0) );
  56     const double off = s30;
  57     ::basegfx::B2DPolygon figure;
  58     figure.append( ::basegfx::B2DPoint( 0.5 + s30 + off, 0.5 + off ) );
  59     figure.append( ::basegfx::B2DPoint( 0.0, -0.5 - s60 ) );
  60     figure.append( ::basegfx::B2DPoint( -0.5 - s30 - off, 0.5 + off ) );
  61     figure.append( ::basegfx::B2DPoint( 0.0, 0.5 ) );
  62     figure.setClosed(true);
  63     return new FigureWipe(figure);
  64 }
  65
  66 FigureWipe * FigureWipe::createPentagonWipe()
  67 {
  68     const double s = sin( basegfx::deg2rad(18.0) );
  69     const double c = cos( basegfx::deg2rad(18.0) );
  70     ::basegfx::B2DPolygon figure;
  71     figure.append( ::basegfx::B2DPoint( 0.5, 0.5 ) );
  72     figure.append( ::basegfx::B2DPoint( 0.5 + s, 0.5 - c ) );
  73     figure.append( ::basegfx::B2DPoint( 0.0, 0.5 - c - sin(basegfx::deg2rad(36.0)) ) );
  74     figure.append( ::basegfx::B2DPoint( -0.5 - s, 0.5 - c ) );
  75     figure.append( ::basegfx::B2DPoint( -0.5, 0.5 ) );
  76     figure.setClosed(true);
  77     return new FigureWipe(figure);
  78 }
  79
  80 FigureWipe * FigureWipe::createHexagonWipe()
  81 {
  82     const double s = sin( basegfx::deg2rad(30.0) );
  83     const double c = cos( basegfx::deg2rad(30.0) );
  84     ::basegfx::B2DPolygon figure;
  85     figure.append( ::basegfx::B2DPoint( 0.5, c ) );
  86     figure.append( ::basegfx::B2DPoint( 0.5 + s, 0.0 ) );
  87     figure.append( ::basegfx::B2DPoint( 0.5, -c ) );
  88     figure.append( ::basegfx::B2DPoint( -0.5, -c ) );
  89     figure.append( ::basegfx::B2DPoint( -0.5 - s, 0.0 ) );
  90     figure.append( ::basegfx::B2DPoint( -0.5, c ) );
  91     figure.setClosed(true);
  92     return new FigureWipe(figure);
  93 }
  94
  95 FigureWipe * FigureWipe::createStarWipe( sal_Int32 nPoints )
  96 {
  97     const double v = (M_PI / nPoints);
  98     const ::basegfx::B2DPoint p_( 0.0, -M_SQRT2 );
  99     ::basegfx::B2DPolygon figure;
 100     for ( sal_Int32 pos = 0; pos < nPoints; ++pos ) {
 101         const double w = (pos * 2.0 * M_PI / nPoints);
 102         ::basegfx::B2DHomMatrix aTransform;
 103         ::basegfx::B2DPoint p(p_);
 104         aTransform.rotate( -w );
 105         p *= aTransform;
 106         figure.append(p);
 107         p = p_;
 108         aTransform.identity();
 109         aTransform.scale( 0.5, 0.5 );
 110         aTransform.rotate( -w - v );
 111         p *= aTransform;
 112         figure.append(p);
 113     }
 114     figure.setClosed(true);
 115     return new FigureWipe(figure);
 116 }
 117
 118 }
 119 }
 120
 121 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */