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