<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>lunarphase.cpp Source File</title> <style type="text/css"> .cp-doNotDisplay { display: none; } @media aural, braille, handheld, tty { .cp-doNotDisplay { display: inline; speak: normal; }} .cp-edit { text-align: right; } @media print, embossed { .cp-edit { display: none; }} </style> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <link rel="meta" href="http://www.kde.org/labels.rdf" type="application/rdf+xml" title="ICRA labels" /> <meta name="trademark" content="KDE e.V." /> <meta name="description" content="K Desktop Environment Homepage, KDE.org" /> <meta name="MSSmartTagsPreventParsing" content="true" /> <meta name="robots" content="all" /> <meta name="no-email-collection" content="http://www.unspam.com/noemailcollection" /> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link rel="shortcut icon" href="../../favicon.ico" /><link rel="icon" href="../../favicon.ico" /> <link rel="stylesheet" media="screen" type="text/css" title="KDE Colors" href="../../kde.css" /> <link rel="stylesheet" media="print, embossed" type="text/css" href="../../print.css" /> <link rel="stylesheet" media="screen, aural, handheld, tty, braille" type="text/css" title="Flat" href="../../flat.css" /> <link rel="stylesheet" type="text/css" href="../../doxygen.css" /> <link rel="stylesheet" type="text/css" href="../../tabs.css" /> </head> <body> <ul class="cp-doNotDisplay"> <li><a href="#cp-content" accesskey="2">Skip to content</a></li> <li><a href="#cp-menu" accesskey="5">Skip to link menu</a></li> </ul> <div id="container"> <div id="header"> <div id="header_top"><div><div> <img alt ="" src="../../top-kde.jpg"/> </div></div></div> <div id="header_bottom"> <div id="location"> <ul> <li><a href="http://api.kde.org">KDE API Reference</a></li> <li><a href="../../index.html">kdepimlibs-4.10.5 API Reference</a></li> </ul> </div> <div id="menu"> <ul> <li><a href="http://www.kde.org/">KDE Home</a></li> <li><a href="http://kde.org/contact/">Contact Us</a></li> </ul> </div> </div> </div> <!-- End page header --> <div id="body_wrapper"> <div id="body"> <!-- begin main content --> <div id="right"> <div class="content"> <div id="main"> <div class="clearer"> </div> <h2><a name="content"></a>KHolidays Library</h2> <!-- BC --> <div id="top"> <!-- Generated by Doxygen 1.8.3.1 --> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_7d1f8f4788b4980602abcfcd1bfe22cd.html">kholidays</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">lunarphase.cpp</div> </div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> This file is part of the kholidays library.</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"></span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2004,2007,2009 Allen Winter <winter@kde.org></span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Copyright (c) 1989, 1993 //krazy:exclude=copyright</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> The Regents of the University of California. All rights reserved.</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"></span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> This library is free software; you can redistribute it and/or</span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> modify it under the terms of the GNU Library General Public</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> License as published by the Free Software Foundation; either</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> version 2 of the License, or (at your option) any later version.</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> This library is distributed in the hope that it will be useful,</span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> GNU Library General Public License for more details.</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> You should have received a copy of the GNU Library General Public License</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> along with this library; see the file COPYING.LIB. If not, write to the</span></div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> Boston, MA 02110-1301, USA.</span></div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">*/</span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "lunarphase.h"</span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <config-kholidays.h></span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <KDebug></span></div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <KGlobal></span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <KLocale></span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <QtCore/QDateTime></span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">using namespace </span>KHolidays;</div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">static</span> <span class="keywordtype">double</span> percentFull( uint tmpt );</div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">static</span> <span class="keywordtype">double</span> degreesToRadians( <span class="keywordtype">double</span> degree );</div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">static</span> <span class="keywordtype">void</span> adj360( <span class="keywordtype">double</span> *degree );</div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> <div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="classKHolidays_1_1LunarPhase.html#a323272a53c3ed31991eda9726125bc47"> 40</a></span> QString <a class="code" href="classKHolidays_1_1LunarPhase.html#a323272a53c3ed31991eda9726125bc47" title="Return the lunar phase as a text string for the specified date.">LunarPhase::phaseNameAtDate</a>( <span class="keyword">const</span> QDate &date )</div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {</div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#ae2649d6c1b7138dc1ff82d8feb27eeeb" title="Return the string representation of phase.">phaseName</a>( <a class="code" href="classKHolidays_1_1LunarPhase.html#a36dc746eb4106d3c10f695f4680d5cbe" title="Return the lunar phase for the specified Gregorian date.">phaseAtDate</a>( date ) );</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> }</div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div> <div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="classKHolidays_1_1LunarPhase.html#ae2649d6c1b7138dc1ff82d8feb27eeeb"> 45</a></span> QString <a class="code" href="classKHolidays_1_1LunarPhase.html#ae2649d6c1b7138dc1ff82d8feb27eeeb" title="Return the string representation of phase.">LunarPhase::phaseName</a>( <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2" title="Phases of the moon, in traditional English notation.">LunarPhase::Phase</a> phase )</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> {</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">switch</span> ( phase ) {</div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">case</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2af4907e0a05647e540d38a96d65a0bc83" title="New moon phase.">NewMoon</a>:</div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span>( i18n( <span class="stringliteral">"New Moon"</span> ) );</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">case</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a0baad3429b9d3fdf7e55ce6ea571d082" title="Full moon phase.">FullMoon</a>:</div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span>( i18n( <span class="stringliteral">"Full Moon"</span> ) );</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">case</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a182adc1d93234560bc4f2050e45b1d47" title="First quarter of moon phase.">FirstQuarter</a>:</div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span>( i18n( <span class="stringliteral">"First Quarter Moon"</span> ) );</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">case</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a8c8a08f9b072028e23878e5aa7d82bcd" title="Last quarter of moon phase.">LastQuarter</a>:</div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span>( i18n( <span class="stringliteral">"Last Quarter Moon"</span> ) );</div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">default</span>:</div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">case</span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a32a0aa410419112797252ba675f49d6d" title="Indication for error.">None</a>:</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> QString();</div> <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div> <div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classKHolidays_1_1LunarPhase.html#a36dc746eb4106d3c10f695f4680d5cbe"> 62</a></span> <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2" title="Phases of the moon, in traditional English notation.">LunarPhase::Phase</a> <a class="code" href="classKHolidays_1_1LunarPhase.html#a36dc746eb4106d3c10f695f4680d5cbe" title="Return the lunar phase for the specified Gregorian date.">LunarPhase::phaseAtDate</a>( <span class="keyword">const</span> QDate &date )</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {</div> <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2" title="Phases of the moon, in traditional English notation.">Phase</a> retPhase = <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a32a0aa410419112797252ba675f49d6d" title="Indication for error.">None</a>;</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// compute percent-full for the middle of today and yesterday.</span></div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">const</span> QTime anytime( 12, 0, 0 );</div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> QDateTime today( date, anytime, Qt::UTC );</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> todayPer = percentFull( today.toTime_t() ) + 0.5;</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div> <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> QDateTime tomorrow( date.addDays( 1 ), anytime, Qt::UTC );</div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> tomorrowPer = percentFull( tomorrow.toTime_t() ) + 0.5;</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">if</span> ( static_cast<int>( todayPer ) == 100 &&</div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>( tomorrowPer ) != 100 ) {</div> <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  retPhase = <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a0baad3429b9d3fdf7e55ce6ea571d082" title="Full moon phase.">FullMoon</a>;</div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( static_cast<int>( todayPer ) == 0 &&</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>( tomorrowPer ) != 0 ) {</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  retPhase = <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2af4907e0a05647e540d38a96d65a0bc83" title="New moon phase.">NewMoon</a>;</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  } <span class="keywordflow">else</span> {</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> ( todayPer > 50 && tomorrowPer < 50 ) {</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  retPhase = <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a8c8a08f9b072028e23878e5aa7d82bcd" title="Last quarter of moon phase.">LastQuarter</a>;</div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">if</span> ( todayPer < 50 && tomorrowPer > 50 ) {</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  retPhase = <a class="code" href="classKHolidays_1_1LunarPhase.html#a55afba64aa078d68dac385fe144a85e2a182adc1d93234560bc4f2050e45b1d47" title="First quarter of moon phase.">FirstQuarter</a>;</div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// Note: if you want to support crescent and gibbous phases then please</span></div> <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// read the source for the original BSD 'pom' program.</span></div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span>( retPhase );</div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> }</div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">/*</span></div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * Copyright (c) 1989, 1993</span></div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * The Regents of the University of California. All rights reserved.</span></div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> *</span></div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * This code is derived from software posted to USENET.</span></div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> *</span></div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div> <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> * are met:</span></div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div> <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span></div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> * documentation and/or other materials provided with the distribution.</span></div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> * 3. All advertising materials mentioning features or use of this software</span></div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> * must display the following acknowledgement:</span></div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * This product includes software developed by the University of</span></div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * California, Berkeley and its contributors.</span></div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> * 4. Neither the name of the University nor the names of its contributors</span></div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * may be used to endorse or promote products derived from this software</span></div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * without specific prior written permission.</span></div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> *</span></div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND</span></div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE</span></div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span></div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS</span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span></div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY</span></div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF</span></div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * SUCH DAMAGE.</span></div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> */</span></div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#ifdef HAVE_SYS_CDEFS_H</span></div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor"></span><span class="preprocessor">#include <sys/cdefs.h></span></div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor"></span></div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment">/*</span></div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> * Phase of the Moon. Calculates the current phase of the moon.</span></div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * Based on routines from `Practical Astronomy with Your Calculator',</span></div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> * by Duffett-Smith. Comments give the section from the book that</span></div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> * particular piece of code was adapted from.</span></div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> *</span></div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * -- Keith E. Brandt VIII 1984</span></div> <div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> *</span></div> <div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> * Updated to the Third Edition of Duffett-Smith's book, Paul Janzen, IX 1998</span></div> <div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> *</span></div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> */</span></div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div> <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor">#include <ctype.h></span></div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#ifdef HAVE_ERR_H</span></div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"></span><span class="preprocessor">#include <err.h></span></div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor"></span><span class="preprocessor">#include <math.h></span></div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#include <string.h></span></div> <div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor">#include <stdlib.h></span></div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#include <time.h></span></div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor">#include <unistd.h></span></div> <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div> <div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">static</span> <span class="keywordtype">double</span> PI = 3.14159265358979323846;</div> <div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment">/*</span></div> <div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> * The EPOCH in the third edition of the book is 1990 Jan 0.0 TDT.</span></div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> * In this program, we do not bother to correct for the differences</span></div> <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> * between UTC (as shown by the UNIX clock) and TDT. (TDT = TAI + 32.184s;</span></div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * TAI-UTC = 32s in Jan 1999.)</span></div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> */</span></div> <div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">static</span> <span class="keywordtype">int</span> EPOCH_MINUS_1970 = ( 20 * 365 + 5 - 1 ); <span class="comment">/* 20 years, 5 leaps, back 1 day to Jan 0 */</span></div> <div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">static</span> <span class="keywordtype">double</span> EPSILONg = 279.403303; <span class="comment">/* solar ecliptic long at EPOCH */</span></div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">static</span> <span class="keywordtype">double</span> RHOg = 282.768422; <span class="comment">/* solar ecliptic long of perigee at EPOCH */</span></div> <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="keyword">static</span> <span class="keywordtype">double</span> ECCEN = 0.016713; <span class="comment">/* solar orbit eccentricity */</span></div> <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keyword">static</span> <span class="keywordtype">double</span> lzero = 318.351648; <span class="comment">/* lunar mean long at EPOCH */</span></div> <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">static</span> <span class="keywordtype">double</span> Pzero = 36.340410; <span class="comment">/* lunar mean long of perigee at EPOCH */</span></div> <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">static</span> <span class="keywordtype">double</span> Nzero = 318.510107; <span class="comment">/* lunar mean long of node at EPOCH */</span></div> <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div> <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">/*</span></div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * percentFull --</span></div> <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * return phase of the moon as a percentage of full</span></div> <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> */</span></div> <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="keyword">static</span> <span class="keywordtype">double</span> percentFull( uint tmpt )</div> <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> {</div> <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">double</span> N, Msol, Ec, LambdaSol, l, Mm, Ev, Ac, A3, Mmprime;</div> <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">double</span> A4, lprime, V, ldprime, D, Nm;</div> <div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div> <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">double</span> days;</div> <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  days = ( tmpt - EPOCH_MINUS_1970 * 86400 ) / 86400.0;</div> <div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div> <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  N = 360 * days / 365.242191; <span class="comment">/* sec 46 #3 */</span></div> <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  adj360( &N );</div> <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  Msol = N + EPSILONg - RHOg; <span class="comment">/* sec 46 #4 */</span></div> <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  adj360( &Msol );</div> <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  Ec = 360 / PI * ECCEN * sin( degreesToRadians( Msol ) ); <span class="comment">/* sec 46 #5 */</span></div> <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  LambdaSol = N + Ec + EPSILONg; <span class="comment">/* sec 46 #6 */</span></div> <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  adj360( &LambdaSol );</div> <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  l = 13.1763966 * days + lzero; <span class="comment">/* sec 65 #4 */</span></div> <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  adj360( &l );</div> <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  Mm = l - ( 0.1114041 * days ) - Pzero; <span class="comment">/* sec 65 #5 */</span></div> <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  adj360( &Mm );</div> <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  Nm = Nzero - ( 0.0529539 * days ); <span class="comment">/* sec 65 #6 */</span></div> <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  adj360( &Nm );</div> <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  Ev = 1.2739 * sin( degreesToRadians( 2 * ( l - LambdaSol ) - Mm ) ); <span class="comment">/* sec 65 #7 */</span></div> <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  Ac = 0.1858 * sin( degreesToRadians( Msol ) ); <span class="comment">/* sec 65 #8 */</span></div> <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  A3 = 0.37 * sin( degreesToRadians( Msol ) );</div> <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  Mmprime = Mm + Ev - Ac - A3; <span class="comment">/* sec 65 #9 */</span></div> <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  Ec = 6.2886 * sin( degreesToRadians( Mmprime ) ); <span class="comment">/* sec 65 #10 */</span></div> <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  A4 = 0.214 * sin( degreesToRadians( 2 * Mmprime ) ); <span class="comment">/* sec 65 #11 */</span></div> <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  lprime = l + Ev + Ec - Ac + A4; <span class="comment">/* sec 65 #12 */</span></div> <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  V = 0.6583 * sin( degreesToRadians( 2 * ( lprime - LambdaSol ) ) );<span class="comment">/* sec 65 #13 */</span></div> <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  ldprime = lprime + V; <span class="comment">/* sec 65 #14 */</span></div> <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  D = ldprime - LambdaSol; <span class="comment">/* sec 67 #2 */</span></div> <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  D = 50.0 * ( 1 - cos( degreesToRadians( D ) ) ); <span class="comment">/* sec 67 #3 */</span></div> <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">return</span> D;</div> <div class="line"><a name="l00209"></a><span class="lineno"> 209</span> }</div> <div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div> <div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment">/*</span></div> <div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> * degreesToRadians --</span></div> <div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> * convert degrees to radians</span></div> <div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> */</span></div> <div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">static</span> <span class="keywordtype">double</span> degreesToRadians( <span class="keywordtype">double</span> degree )</div> <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> {</div> <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> ( degree * PI ) / 180.00;</div> <div class="line"><a name="l00218"></a><span class="lineno"> 218</span> }</div> <div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div> <div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment">/*</span></div> <div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> * adj360 --</span></div> <div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment"> * adjust value so 0 <= degree <= 360</span></div> <div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment"> */</span></div> <div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keyword">static</span> <span class="keywordtype">void</span> adj360( <span class="keywordtype">double</span> *degree )</div> <div class="line"><a name="l00225"></a><span class="lineno"> 225</span> {</div> <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">for</span> ( ;; ) {</div> <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span> ( *degree < 0 ) {</div> <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  *degree += 360;</div> <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( *degree > 360 ) {</div> <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  *degree -= 360;</div> <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  } <span class="keywordflow">else</span> {</div> <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">break</span>;</div> <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div> <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div> <div class="line"><a name="l00235"></a><span class="lineno"> 235</span> }</div> </div><!-- fragment --></div><!-- contents --> <div class="copyrights"> This file is part of the KDE documentation.<br/> Documentation copyright © 1996-2013 The KDE developers.<br/> Generated on Fri Jul 12 2013 16:48:07 by <a href="http://www.doxygen.org/index.html">doxygen</a> 1.8.3.1 written by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>, © 1997-2006 <p> KDE's <a href="http://techbase.kde.org/Policies/Library_Documentation_Policy">Doxygen guidelines</a> are available online. </p> </div> </div> </div> </div> <div id="left"> <div class="menu_box"> <a name="cp-menu" /><div 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