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