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<div class="title">egm2008_full_grid_package.cpp</div> </div>
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<a href="egm2008__full__grid__package_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</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">// File name: egm2008_full_grid_package.cpp //</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Description of this module: //</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Utility software that interpolates EGM 2008 //</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// geoid heights from one of NGA's geoid height grids. //</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This interpolator loads the worldwide EGM 2008 grid upon //</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// instantiation, and it interpolates from the worldwide grid. //</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// This interpolator gives exactly the same results as //</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// the companion egm2008_aoi_grid_package's interpolator. //</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// However, this interpolator is faster when //</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// users are requesting tens of thousands of geoid //</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// heights at widely dispersed horizontal locations. //</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// Revision History: //</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// Date Name Description //</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> <span class="comment">// 19 Nov 2010 RD Craig Release //</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// 27 Jan 2011 S. Gillis BAEts28121, Terrain Service rearchitecture //</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// 30 May 2013 RD Craig MSP 1.3: ER29758 //</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Added second constructor to //</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// permit multiple geoid-height grids //</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// when assessing relative interpolation errors. //</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"></span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// This file contains definitions</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// for functions in the Egm2008FullGrid class.</span></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="preprocessor">#include <fstream></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#ifdef IRIXN32</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span><span class="preprocessor">#include <math.h></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span><span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "<a class="code" href="_c_c_s_thread_lock_8h.html">CCSThreadLock.h</a>"</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "<a class="code" href="_coordinate_conversion_exception_8h.html">CoordinateConversionException.h</a>"</span></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="preprocessor">#include "<a class="code" href="egm2008__full__grid__package_8h.html">egm2008_full_grid_package.h</a>"</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">using namespace </span>MSP;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">namespace </span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> BYTES_PER_DOUBLE = <span class="keyword">sizeof</span>( double );</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> BYTES_PER_FLOAT = <span class="keyword">sizeof</span>( float );</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> BYTES_PER_INT = <span class="keyword">sizeof</span>( int );</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="_m_g_r_s_8cpp.html#a002b2f4894492820fe708b1b7e7c5e70">EPSILON</a> = 1.0e-15; <span class="comment">// ~4 times machine epsilon</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a> = 3.14159265358979323;</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>  <span class="keyword">const</span> <span class="keywordtype">double</span> PIDIV2 = PI / 2.0;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> TWOPI = 2.0 * <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a>; </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>  <span class="keyword">const</span> <span class="keywordtype">double</span> DEG_PER_RAD = 180.0 / <a class="code" href="_m_g_r_s_8cpp.html#a598a3330b3c21701223ee0ca14316eca">PI</a>;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> RAD_PER_DEG = PI / 180.0;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// ***************************</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// ** Public user functions **</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// ***************************</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// ***************************************</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// * Default Egm2008FullGrid constructor *</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// ***************************************</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#abeb9e73e0ab3ed80c9f2f17e99df9c87"> 76</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#abeb9e73e0ab3ed80c9f2f17e99df9c87">Egm2008FullGrid::Egm2008FullGrid</a>( <span class="keywordtype">void</span> )</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// : Egm2008GeoidGrid() // base class initializer</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// February 11, 2011: Version 1.01</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// This function implements the </span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// default Egm2008FullGrid constructor.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">int</span> status;</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">// The base class constructor</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// initialized most data members.</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>  <span class="comment">// Initialize grid pointer for proper</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// operation of derived-class functions .....</span></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>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = NULL; </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// Read entire worldwide EGM 2008 grid here .....</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  status = this-><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a746d6efc524ccaa731463191a3657581">loadGrid</a>();</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> ( status != 0 )</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid: constructor failed."</span>);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> } <span class="comment">// End of default Egm2008FullGrid constuctor</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// *******************************************</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// * Non-default Egm2008FullGrid constructor *</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment">// *******************************************</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#af3525f30fa18d08b001bfa701cd85384"> 113</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#abeb9e73e0ab3ed80c9f2f17e99df9c87">Egm2008FullGrid::Egm2008FullGrid</a>( </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">const</span> std::string &gridFname ) <span class="comment">// input</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> : <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a>( gridFname ) <span class="comment">// base class initializer</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// February 11, 2011: Version 1.01</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// May 30, 2013: Version 2.00</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// This function implements a </span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// non-default Egm2008FullGrid constructor.</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// Definition:</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// gridFname: The support geoid-height grid's file name; this</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// file name should not contain the directory path;</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// the base-class constructor will prepend the </span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">// path specified by environment variable MSPCCS_DATA.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">int</span> status;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="comment">// The base class constructor</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">// initialized most data members.</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// Initialize grid pointer for proper</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// operation of derived-class functions .....</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = NULL; </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// Read entire worldwide EGM 2008 grid here .....</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  status = this-><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a746d6efc524ccaa731463191a3657581">loadGrid</a>();</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="keywordflow">if</span> ( status != 0 )</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid: constructor failed."</span>);</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> } <span class="comment">// End of default Egm2008FullGrid constuctor</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment">// ************************************</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">// * Egm2008FullGrid copy constructor *</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment">// ************************************</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#abeb9e73e0ab3ed80c9f2f17e99df9c87">Egm2008FullGrid::Egm2008FullGrid</a> </div>
<div class="line"><a name="l00160"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ca4c7c0439268b6e4ad162f334c65ae"> 160</a></span>  ( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html">Egm2008FullGrid</a>& oldGrid ) <span class="comment">// input</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> : <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a>( oldGrid ) <span class="comment">// base class initializer</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> {</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">int</span> kount;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// This function implements the</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// Egm2008FullGrid copy constructor.</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// The base class copy </span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// constructor handles many data members .....</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// Definition:</span></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="comment">// oldGrid: The Egm2008FullGrid object being copied.</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// Copy the worldwide geoid separations .....</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">try</span></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>  _heightGrid = NULL;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  kount = _nGridRows * _nGridCols;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  _heightGrid = <span class="keyword">new</span> <span class="keywordtype">float</span>[ kount ];</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">for</span> ( i = 0; i < kount; i++ )</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  {</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  _heightGrid[ i ] = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ i ];</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  }</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">catch</span> (...)</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  {</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>();</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid: copy contructor failed"</span>);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>(); <span class="comment">// Use CCSThreadMutex function in copy constructors</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> } <span class="comment">// End of Egm2008FullGrid copy constuctor</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment">// ******************************</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment">// * Egm2008FullGrid destructor *</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment">// ******************************</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a450ebf359aa2b8643d95c62029c58779"> 212</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a450ebf359aa2b8643d95c62029c58779">Egm2008FullGrid::~Egm2008FullGrid</a> (<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> {</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// This function implements </span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">// the Egm2008FullGrid destructor. </span></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>  <span class="keyword">delete</span>[] <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> } <span class="comment">// End of Egm2008FullGrid destructor</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="comment">// ***************************************</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="comment">// * Egm2008FullGrid assignment operator *</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="comment">// ***************************************</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html">Egm2008FullGrid</a>&</div>
<div class="line"><a name="l00229"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a69cbb90350685ffaa5a2c6c470ea5d45"> 229</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a69cbb90350685ffaa5a2c6c470ea5d45">Egm2008FullGrid::operator= </a>( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html">Egm2008FullGrid</a>& oldGrid )</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> {</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// This function implements the</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// Egm2008FullGrid assignment operator.</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// Definition:</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// oldGrid: The Egm2008FullGrid object being assigned.</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordtype">int</span> kount;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// This function implements </span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="comment">// the Egm2008FullGrid assignment operator.</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> ( <span class="keyword">this</span> == & oldGrid ) <span class="keywordflow">return</span> ( *<span class="keyword">this</span> );</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// Assign base class data members .....</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#af48845ce19fa0f8ff59ce426e0dae35f">Egm2008GeoidGrid::operator= </a>( oldGrid );</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="comment">// Assign the worldwide geoid separations .....</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">try</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  {</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keyword">delete</span>[] <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>; <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = NULL;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  kount = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = <span class="keyword">new</span> <span class="keywordtype">float</span>[ kount ];</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">for</span> ( i = 0; i < kount; i++ )</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  {</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ i ] = oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ i ];</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  }</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">catch</span> (...)</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  {</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>();</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>();</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">throw</span> <a class="code" href="class_m_s_p_1_1_c_c_s_1_1_coordinate_conversion_exception.html">MSP::CCS::CoordinateConversionException</a>(</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="stringliteral">"Error: Egm2008GeoidGrid: assignment operator failed"</span>);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  }</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>(); <span class="comment">// Use CCSThreadMutex function in assignment operations</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  oldGrid.<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a536750d04da7d4d06398ec6725bc1c1d">_mutex</a>.<a class="code" href="class_m_s_p_1_1_c_c_s_thread_mutex.html#adc09990c6c48d12e5a96e20138d0f522">unlock</a>();</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span>( *<span class="keyword">this</span> );</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> } <span class="comment">// End of Egm2008FullGrid assignment operator</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment">// *************************************************</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">// * Find geoid height via 2D spline interpolation *</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment">// *************************************************</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00289"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#af87d90493fe7acf6522dc314589fe158"> 289</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#af87d90493fe7acf6522dc314589fe158">Egm2008FullGrid::geoidHeight</a>(</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordtype">int</span> wSize, <span class="comment">// input</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordtype">double</span> latitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordtype">double</span> longitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordtype">double</span>& gHeight ) <span class="comment">// output</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> {</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="comment">// This function computes </span></div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="comment">// geoid heights from a reformatted </span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// version of NGA's worldwide geoid-height grid.</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">// It primarily uses BICUBIC-SPLINE INTERPOLATION, </span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">// but it uses bilinear interpolation for small windows.</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  </div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="comment">// Definitions:</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="comment">// gHeight: Interpolated geoid height (meters).</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="comment">// latitude: Geodetic latitude (radians) at </span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">// which geoid height is to be interpolated. </span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// longitude: Geodetic longitude (radians) at</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="comment">// which geoid height is to be interpolated.</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="comment">// wSize: The number of grid points </span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// along each edge of the interpolation</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="comment">// window that surrounds the point of interest;</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">// the interpolation window has wSize**2 grid points;</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">// if wSize < 3, then the geoid height </span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// is computed using bilinear interpolation; the</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">// maximum allowable wSize is twenty grid points;</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="comment">// typical window sizes are 4x4, 6x6, 8,8 etc;</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">// EGM 2008 interpolations normally use wSize = 6.</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="comment">// i: Grid's latitude index. </span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">// j: Grid's longitude index.</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="comment">// oddSize: A flag indicating whether the </span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">// local interpolation grid's number</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="comment">// of (rows = column) is even or odd;</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// oddSize = true ..... </span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// the number of rows = columns is odd,</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// where 3x3, 5x5, 7x7, 9x9, etc are</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// examples of grids with oddSize = true,</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">// oddSize = false ..... </span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="comment">// the number of rows = columns is even,</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="comment">// where 4x4, 6x6, 8x8, 10x10, etc are</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="comment">// examples of grids with oddSize = false.</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="comment">// The associated indexing logic has two goals:</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// 2) if oddSize = true, select the </span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="comment">// the local grid so that the point of</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="comment">// interest lies near the grid's center,</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="comment">// 2) if oddSize = false, select the </span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="comment">// the local grid so that the point of</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="comment">// interest lies in the grid's central cell.</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">// When oddSize = false, the interpolator will</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// obtain a numerically-most-trustworthy solution.</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment">// MSP::CCSThreadLock aLock( &_mutex ); // copy constructor locks thread</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> </div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> TWENTY = 20;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordtype">bool</span> oddSize;</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordtype">int</span> i0;</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordtype">int</span> iIndex;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordtype">int</span> iMin;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordtype">int</span> j;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordtype">int</span> j0;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordtype">int</span> jIndex;</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordtype">int</span> jMin;</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordtype">int</span> kIndex;</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordtype">int</span> status;</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordtype">double</span> latIndex;</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordtype">double</span> lonIndex;</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordtype">double</span> temp;</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> </div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordtype">double</span> latSupport[ TWENTY ];</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordtype">double</span> lonSupport[ TWENTY ];</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordtype">double</span> moments [ TWENTY ];</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="comment">// EDIT THE INPUT AND INITIALIZE .....</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  gHeight = 0.0;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">if</span> ( TWENTY != <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> ) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> </div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">if</span> ( wSize > <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a> ) wSize = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a41455eb2451be53f9e96976b01a93d31">MAX_WSIZE</a>;</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">if</span> (( latitude < -PIDIV2 ) || ( latitude > PIDIV2 )) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="comment">// Rationalize the longitude .....</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">while</span> ( longitude < 0.0 ) longitude += TWOPI;</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">while</span> ( longitude > TWOPI ) longitude -= TWOPI;</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> </div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">for</span> (i = 0; i < TWENTY; i++)</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  {</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  latSupport[ i ] = lonSupport[ i ] = moments[ i ] = 0.0;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  }</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> </div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="comment">// If window size is less than three, compute</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="comment">// the geoid height using bilinear interpolation .....</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> </div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="comment">// (executes only when the interpolation window </span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="comment">// is too small for bicubic spline interpolation)</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> </div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">if</span> ( wSize < 3 ) </div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  {</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  status = </div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#af87d90493fe7acf6522dc314589fe158">geoidHeight</a>( latitude, longitude, gHeight );</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span> ( status != 0 ) <span class="keywordflow">return</span>( 1 ); </div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  ; <span class="comment">/* Normal bilinear interpolation return */</span> <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// Compute indices to the window's grid points .....</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> </div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="comment">// Roughly center the </span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="comment">// interpolation window at the station .....</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  latIndex = </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  double( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> ) + ( latitude + PIDIV2 ) / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>;</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  lonIndex = </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  double( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> ) + ( longitude - 0.0 ) / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>;</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  oddSize = ( wSize != (( wSize / 2 ) * 2 ));</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> </div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">if</span> ( oddSize ) {</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  i0 = int( latIndex + 0.5 );</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  j0 = int( lonIndex + 0.5 );</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> </div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  iMin = i0 - ( wSize / 2 );</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  jMin = j0 - ( wSize / 2 );</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">else</span> { </div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  i0 = int( latIndex );</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  j0 = int( lonIndex );</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  iMin = i0 - ( wSize / 2 ) + 1;</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  jMin = j0 - ( wSize / 2 ) + 1;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  }</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> </div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="comment">// COMPUTE BI-CUBIC SPLINE INTERPOLATION .....</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> </div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="comment">// Compute interpolation window's </span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="comment">// relative column coordinate at which the</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// first set of geoid heights will be interpolated ....</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> </div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  temp = </div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  lonIndex - double( jMin ); <span class="comment">// 0 <= temp <= (wSize - 1)</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> </div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="comment">// Interpolate a synthetic geoid height </span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="comment">// for each row within the interpolation window .....</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">for</span> ( i = 0; i < wSize; i++ ) </div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  {</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  iIndex = iMin + i;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  offset = </div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - iIndex - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> </div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="comment">// Load interpolation window's </span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="comment">// i-th row of tabulated geoid heights ..... </span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> </div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">for</span> ( j = 0; j < wSize; j++ ) </div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  {</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  jIndex = jMin + j;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> </div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  kIndex = jIndex + offset; </div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  lonSupport[j] = <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ kIndex ];</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  }</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">// Compute moments, </span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="comment">// interpolate the i-th row's geoid </span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="comment">// height at the longitude of interest, </span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="comment">// then load the i-th latitude support point .....</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> </div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  status = </div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab53263887ad075a952f68dda1416cdc5">initSpline</a>( wSize, lonSupport, moments );</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> </div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keywordflow">if</span> ( status != 0 ) <span class="keywordflow">return</span>( 1 ); </div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> </div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  latSupport[i] = </div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad81b4e894ccf08ceddb246abe9635cd9">spline</a>( wSize, temp, lonSupport, moments ); </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  }</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> </div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// Compute interpolation window's </span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="comment">// relative row coordinate at which the</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// final geoid height will be interpolated .....</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> </div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  temp = </div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  latIndex - double( iMin ); <span class="comment">// 0 <= temp <= (wSize - 1)</span></div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// Compute moments, and interpolate final </span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// geoid height at the latitude of interest .....</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> </div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  status = </div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab53263887ad075a952f68dda1416cdc5">initSpline</a>( wSize, latSupport, moments ); </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> </div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">if</span> ( status != 0 ) <span class="keywordflow">return</span>( 1 ); </div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> </div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  gHeight = </div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad81b4e894ccf08ceddb246abe9635cd9">spline</a>( wSize, temp, latSupport, moments );</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// The thread is unlocked by aLock's destructor;</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="comment">// this occurs even when exceptions are thrown.</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> </div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordflow">catch</span> ( ... ) { gHeight = 0.0; <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">return</span>( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> </div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> } <span class="comment">// End of function Egm2008FullGrid::geoidHeight</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> </div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> </div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="comment">// **********************</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="comment">// ** Hidden functions **</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="comment">// **********************</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> </div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span> <span class="comment">// ************************************** </span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="comment">// * Interpolate EGM 2008 geoid heights * </span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="comment">// ************************************** </span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00518"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#adc764d92f31d5f9fa40810317b7d5a51"> 518</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#af87d90493fe7acf6522dc314589fe158">Egm2008FullGrid::geoidHeight</a>(</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordtype">double</span> latitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordtype">double</span> longitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordtype">double</span>& gHeight ) <span class="comment">// output</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> { </div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  </div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="comment">// This function, which is</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">// exercised only when wSize < 3, uses</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="comment">// bilinear interpolation to find geoid heights.</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> </div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// Definitions: </span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> </div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="comment">// gHeight: Interpolated geoid height (meters).</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="comment">// latitude: GEODETIC latitude at which nominal</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="comment">// geoid height is to be computed (radians). </span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="comment">// longitude: GEODETIC longitude at which nominal</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">// geoid height is to be computed (radians). </span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> </div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">// wSize: The local interpolation window's size:</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="comment">// normally wSize = 6 for EGM 2008 interpolations.</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="comment">// Thread locks are not needed here, because this function</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="comment">// can only be invoked from the bicubic spline geoidHeight function; the</span></div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="comment">// thread locks, if any, reside in the bicubic spline's geoidHeight function.</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span> </div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span> </div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordtype">int</span> i1;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="keywordtype">int</span> i2;</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordtype">int</span> i3;</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="keywordtype">int</span> i4;</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordtype">int</span> j1;</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordtype">int</span> j2;</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="keywordtype">int</span> j3;</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="keywordtype">int</span> j4;</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keywordtype">int</span> status;</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> </div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordtype">double</span> a0;</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="keywordtype">double</span> a1;</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="keywordtype">double</span> a2;</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordtype">double</span> a3;</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="keywordtype">double</span> lat1;</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keywordtype">double</span> lon1;</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keywordtype">double</span> n1;</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keywordtype">double</span> n2;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordtype">double</span> n3;</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keywordtype">double</span> n4;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordtype">double</span> x;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordtype">double</span> y;</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="comment">// EDIT THE INPUT AND INITIALIZE .....</span></div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span> </div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  gHeight = 0.0;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> </div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">if</span> (( latitude < -PIDIV2 ) || ( latitude > PIDIV2 )) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> </div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keywordflow">while</span> ( longitude < 0.0 ) longitude += TWOPI;</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">while</span> ( longitude > TWOPI ) longitude -= TWOPI;</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span> </div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="comment">// COMPUTE THE SURROUNDING GRID POINTS' INDICES .....</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  status = </div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad4fdc86705a179966de58b823da84126">swGridIndices</a></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  ( latitude, longitude, i1, j1 );</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> </div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="keywordflow">if</span> ( status != 0 ) <span class="keywordflow">return</span>( 1 ); </div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> </div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  i2 = i1;</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  j2 = j1 + 1;</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> </div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  i3 = i1 + 1;</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  j3 = j2;</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> </div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  i4 = i3;</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  j4 = j1;</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> </div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">// GET THE SURROUNDING GRID POINTS' GEOID HEIGHTS .....</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span> </div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  index = </div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  j1 + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - i1 - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  n1 = <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index ];</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span> </div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  index = </div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  j2 + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - i2 - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  n2 = <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index ];</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> </div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  index = </div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  j3 + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - i3 - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  n3 = <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index ];</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span> </div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  index = </div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  j4 + ( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - i4 - 1 ) * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  n4 = <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index ];</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> </div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="comment">// INTERPOLATE GEOID HEIGHT AT THE POINT OF INTEREST .....</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> </div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="comment">// Set bilinear coefficients .....</span></div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span> </div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  a0 = n1;</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  a1 = n2 - n1;</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  a2 = n4 - n1;</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  a3 = n1 + n3 - n2 - n4;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span> </div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="comment">// Set first ( S/W ) corner's geodetic coordinates .....</span></div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span> </div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  lat1 = </div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> * double( i1 ); <span class="comment">// radians</span></div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  lon1 = </div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> + <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> * double( j1 ); <span class="comment">// radians</span></div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span> </div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="comment">// Set point coordinates relative</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="comment">// to the grid square's S/W corner .....</span></div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> </div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  <span class="comment">// 0 <= x <= 1; 0 <= y <= 1.</span></div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span> </div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  x = ( longitude - lon1 ) / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>;</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  y = ( latitude - lat1 ) / <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>;</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span> </div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="comment">// Perform the interpolation .....</span></div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> </div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  gHeight = a0 + a1 * x + a2 * y + a3 * x * y; <span class="comment">// meters</span></div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> </div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span> </div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keywordflow">catch</span> ( ... ) { gHeight = 0.0; <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span> </div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keywordflow">return</span>( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  </div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span> } <span class="comment">// End of function Egm2008FullGrid::geoidHeight </span></div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span> </div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span> </div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> <span class="comment">// ******************************</span></div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span> <span class="comment">// * Read reformatted version * </span></div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span> <span class="comment">// * of NGA's geoid-height grid *</span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span> <span class="comment">// ******************************</span></div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> </div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00657"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a746d6efc524ccaa731463191a3657581"> 657</a></span> <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a746d6efc524ccaa731463191a3657581">Egm2008FullGrid::loadGrid</a>( <span class="keywordtype">void</span> )</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span> {</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="comment">// November 19, 2010: Version 1.00</span></div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="comment">// February 11, 2011: Version 2.00:</span></div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="comment">// the function name changed after code review</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span> </div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="comment">// This function reads a reformatted version</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="comment">// of NGA's EGM 2008 worldwide geoid-height grid.</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> </div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="comment">// The grid data is arranged in latitude rows, </span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="comment">// with the northernmost rows first, and with the</span></div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <span class="comment">// geoid heights arranged west-to-east within each row. </span></div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span> </div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="comment">// Thread locks are not needed here, because this </span></div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="comment">// function can only be invoked from the constructor;</span></div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="comment">// the thread locks reside in the constructor.</span></div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span> </div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span> </div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="keywordtype">int</span> endRow;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <span class="keywordtype">int</span> index0;</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keywordtype">int</span> index1;</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <span class="keywordtype">int</span> index2;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="keywordtype">int</span> j;</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="keywordtype">int</span> k;</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <span class="keywordtype">int</span> kount;</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="keywordtype">int</span> startRow;</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span> </div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  std::ifstream fin;</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span> </div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="comment">// INITIALIZE .....</span></div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span> </div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  fin.open(</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ad88b9ca76db17ad92ac9a8b93015d415">_gridFname</a>.c_str(),</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  std::ifstream::binary | std::ifstream::in );</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span> </div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordflow">if</span> ( fin.fail() ) <span class="keywordflow">return</span>( 1 );</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span> </div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="comment">// READ AND STORE HEADER .....</span></div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> </div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  fin.read((<span class="keywordtype">char</span>*) &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a>, BYTES_PER_INT );</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span> </div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">if</span> (fin.fail()) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span> </div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  fin.read((<span class="keywordtype">char</span>*) &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a>, BYTES_PER_INT );</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span> </div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="keywordflow">if</span> (fin.fail()) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span> </div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  fin.read((<span class="keywordtype">char</span>*) &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>, BYTES_PER_INT );</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span> </div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keywordflow">if</span> (fin.fail()) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> </div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  fin.read((<span class="keywordtype">char</span>*) &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>, BYTES_PER_DOUBLE );</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span> </div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">if</span> (fin.fail()) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span> </div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  fin.read((<span class="keywordtype">char</span>*) &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>, BYTES_PER_DOUBLE );</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span> </div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">if</span> (fin.fail()) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span> </div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="comment">// If needed, convert to LITTLE-ENDIAN representation .....</span></div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span> </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span> <span class="preprocessor"> #if LITTLE_ENDIAN</span></div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a>, BYTES_PER_INT, 1 );</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a>, BYTES_PER_INT, 1 );</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a>, BYTES_PER_INT, 1 );</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a>, BYTES_PER_DOUBLE, 1 );</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( &<a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a>, BYTES_PER_DOUBLE, 1 );</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span> </div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> *= RAD_PER_DEG; <span class="comment">// grid file stores these in degrees</span></div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> *= RAD_PER_DEG; <span class="comment">// grid file stores these in degrees</span></div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span> </div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="comment">// Set derived parameters .....</span></div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span> </div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a90a671a7b5bb7bc81792875f08b9af6a">_nOrigRows</a> + ( 2 * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> );</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aed72b3036e11da52182a8f338d5a372d">_nOrigCols</a> + ( 2 * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> ) + 1;</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span> </div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a7ac9a8fbfd6905df0c8bf03ed8f769ff">_baseLatitude</a> =</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  -PIDIV2 - <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ae4610b8cb5c6943b093d6d8c869d74b0">_dLat</a> * double( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> ); <span class="comment">// radians</span></div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#aee81cc3285e187585460b4184474b934">_baseLongitude</a> =</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  0.0 - <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ac9316fa466f6a953115c4bbb839f7718">_dLon</a> * double( <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a819a4f7158e690c7b9bd1d954f31bb41">_nGridPad</a> ); <span class="comment">// radians</span></div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span> </div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="comment">// READ AND STORE THE REFORMATTED GRID .....</span></div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span> </div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="comment">// (Recall that the reformatted grid</span></div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="comment">// a) doesn't have FORTRAN records' headers and trailers,</span></div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="comment">// b) does have padding around the original grid's periphery)</span></div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span> </div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = NULL;</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span> </div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> = </div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="keyword">new</span> <span class="keywordtype">float</span>[ <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> * <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a> ];</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span> </div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keywordflow">if</span> ( NULL == <a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a> ) <span class="keywordflow">return</span>( 1 ); </div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span> </div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  index0 = 0;</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span> </div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  startRow = <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a2286085cfe409a3d1d0124b32aea5ad0">_nGridRows</a> - 1;</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  endRow = 0;</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span> </div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keywordflow">for</span> ( i = startRow; i >= endRow; i-- ) </div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  {</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="comment">// Read row's geoid heights .....</span></div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span> </div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  fin.read( </div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  (<span class="keywordtype">char</span>*) (&<a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index0 ]), </div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  ( _nGridCols * BYTES_PER_FLOAT ));</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span> </div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keywordflow">if</span> ( fin.fail() ) { fin.close(); <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span> </div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="comment">// If needed, convert to LITTLE-ENDIAN representation .....</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span> </div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span> <span class="preprocessor"> #if LITTLE_ENDIAN</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  this-><a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#a3ec51d3d35bfcc64a071299404d3d77d">swapBytes</a>( </div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  &<a class="code" href="class_m_s_p_1_1_egm2008_full_grid.html#a5ceda027c9b9d5c7176802a413422d1b">_heightGrid</a>[ index0 ], BYTES_PER_FLOAT, _nGridCols ); </div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span> </div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span> <span class="preprocessor"></span> </div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  index0 += <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html#ab922a0a4cd247d0eb260d73e566152b4">_nGridCols</a>;</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  }</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span> </div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  fin.close();</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span> </div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  } <span class="comment">// End of exceptions' try block</span></div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span> </div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="keywordflow">catch</span> ( ... ) { <span class="keywordflow">return</span>( 1 ); }</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span> </div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">return</span> ( 0 ); <span class="comment">// Normal-return flag</span></div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span> </div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span> } <span class="comment">// End of function Egm2008FullGrid::loadGrid</span></div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span> </div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span> </div>
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