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3 <title>MayaChemTools:Code:MolecularDescriptors::HydrogenBondsDescriptors.pm</title>
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13 <pre>
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14 <a name="package-MolecularDescriptors::HydrogenBondsDescriptors-"></a> 1 <span class="k">package </span><span class="i">MolecularDescriptors::HydrogenBondsDescriptors</span><span class="sc">;</span>
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15 2 <span class="c">#</span>
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16 3 <span class="c"># $RCSfile: HydrogenBondsDescriptors.pm,v $</span>
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17 4 <span class="c"># $Date: 2015/02/28 20:49:20 $</span>
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18 5 <span class="c"># $Revision: 1.18 $</span>
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19 6 <span class="c">#</span>
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20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span>
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21 8 <span class="c">#</span>
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22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span>
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23 10 <span class="c">#</span>
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24 11 <span class="c"># This file is part of MayaChemTools.</span>
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25 12 <span class="c">#</span>
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26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span>
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27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span>
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28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span>
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29 16 <span class="c"># later version.</span>
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30 17 <span class="c">#</span>
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31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span>
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32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span>
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33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span>
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34 21 <span class="c"># details.</span>
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35 22 <span class="c">#</span>
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36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span>
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37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span>
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38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span>
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39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span>
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40 27 <span class="c">#</span>
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41 28
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42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span>
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43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span>
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44 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span>
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45 32 <span class="k">use</span> <span class="w">Scalar::Util</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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46 33 <span class="k">use</span> <span class="w">TextUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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47 34 <span class="k">use</span> <span class="w">Atom</span><span class="sc">;</span>
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48 35 <span class="k">use</span> <span class="w">Molecule</span><span class="sc">;</span>
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49 36 <span class="k">use</span> <span class="w">MolecularDescriptors::MolecularDescriptors</span><span class="sc">;</span>
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50 37
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51 38 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span>
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52 39
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53 40 <span class="i">@ISA</span> = <span class="q">qw(MolecularDescriptors::MolecularDescriptors Exporter)</span><span class="sc">;</span>
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54 41 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span>
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55 42 <span class="i">@EXPORT_OK</span> = <span class="q">qw(GetDescriptorNames)</span><span class="sc">;</span>
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56 43
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57 44 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span>
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58 45
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59 46 <span class="c"># Setup class variables...</span>
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60 47 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="cm">,</span> <span class="i">@DescriptorNames</span><span class="s">)</span><span class="sc">;</span>
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61 48 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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62 49
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63 50 <span class="c"># Overload Perl functions...</span>
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64 51 <span class="k">use</span> <span class="w">overload</span> <span class="q">'""'</span> <span class="cm">=></span> <span class="q">'StringifyHydrogenBondsDescriptors'</span><span class="sc">;</span>
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65 52
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66 53 <span class="c"># Class constructor...</span>
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67 <a name="new-"></a> 54 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span>
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68 55 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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69 56
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70 57 <span class="c"># Initialize object...</span>
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71 58 <span class="k">my</span> <span class="i">$This</span> = <span class="i">$Class</span><span class="i">->SUPER::new</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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72 59 <span class="k">bless</span> <span class="i">$This</span><span class="cm">,</span> <span class="k">ref</span><span class="s">(</span><span class="i">$Class</span><span class="s">)</span> || <span class="i">$Class</span><span class="sc">;</span>
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73 60 <span class="i">$This</span><span class="i">->_InitializeHydrogenBondsDescriptors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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74 61
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75 62 <span class="i">$This</span><span class="i">->_InitializeHydrogenBondsDescriptorsProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
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76 63
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77 64 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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78 65 <span class="s">}</span>
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79 66
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80 67 <span class="c"># Initialize class ...</span>
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81 <a name="_InitializeClass-"></a> 68 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span>
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82 69 <span class="c">#Class name...</span>
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83 70 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span>
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84 71
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85 72 <span class="c"># Descriptor names...</span>
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86 73 <span class="i">@DescriptorNames</span> = <span class="s">(</span><span class="q">'HydrogenBondDonors'</span><span class="cm">,</span> <span class="q">'HydrogenBondAcceptors'</span><span class="s">)</span><span class="sc">;</span>
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87 74
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88 75 <span class="s">}</span>
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89 76
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90 77 <span class="c"># Get descriptor names as an array.</span>
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91 78 <span class="c">#</span>
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92 79 <span class="c"># This functionality can be either invoked as a class function or an</span>
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93 80 <span class="c"># object method.</span>
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94 81 <span class="c">#</span>
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95 <a name="GetDescriptorNames-"></a> 82 <span class="k">sub </span><span class="m">GetDescriptorNames</span> <span class="s">{</span>
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96 83 <span class="k">return</span> <span class="i">@DescriptorNames</span><span class="sc">;</span>
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97 84 <span class="s">}</span>
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98 85
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99 86 <span class="c"># Initialize object data...</span>
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100 87 <span class="c">#</span>
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101 <a name="_InitializeHydrogenBondsDescriptors-"></a> 88 <span class="k">sub </span><span class="m">_InitializeHydrogenBondsDescriptors</span> <span class="s">{</span>
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102 89 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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103 90
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104 91 <span class="c"># Type of MolecularDescriptor...</span>
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105 92 <span class="i">$This</span>->{<span class="w">Type</span>} = <span class="q">'HydrogenBonds'</span><span class="sc">;</span>
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106 93
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107 94 <span class="c"># The currrent release of MayaChemTools supports identification of two types of</span>
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108 95 <span class="c"># hydrogen bond donor and acceptor atoms with these names:</span>
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109 96 <span class="c">#</span>
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110 97 <span class="c"># HBondsType1 or HydrogenBondsType1</span>
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111 98 <span class="c"># HBondsType2 or HydrogenBondsType2</span>
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112 99 <span class="c">#</span>
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113 100 <span class="c"># The names of these hydrogen bond types are rather arbirary. However, their</span>
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114 101 <span class="c"># definitions have specific meaning and are as follows:</span>
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115 102 <span class="c">#</span>
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116 103 <span class="c"># HydrogenBondsType1 [ Ref 60-61, Ref 65-66 ]:</span>
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117 104 <span class="c"># . Donor: NH, NH2, OH - Any N and O with available H</span>
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118 105 <span class="c"># . Acceptor: N[!H], O - Any N without available H and any O</span>
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119 106 <span class="c">#</span>
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120 107 <span class="c"># HydrogenBondsType2 [ Ref 91 ]:</span>
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121 108 <span class="c"># . Donor: NH, NH2, OH - N and O with availabe H</span>
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122 109 <span class="c"># . Acceptor: N, O - Add N and O</span>
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123 110 <span class="c">#</span>
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124 111 <span class="c"># Note:</span>
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125 112 <span class="c"># . HydrogenBondsType2 definition corresponds to Rule of 5.</span>
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126 113 <span class="c">#</span>
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127 114 <span class="i">$This</span>->{<span class="w">HydrogenBondsType</span>} = <span class="q">'HBondsType2'</span><span class="sc">;</span>
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128 115
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129 116 <span class="c"># Intialize descriptor names and values...</span>
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130 117 <span class="i">$This</span><span class="i">->_InitializeDescriptorNamesAndValues</span><span class="s">(</span><span class="i">@DescriptorNames</span><span class="s">)</span><span class="sc">;</span>
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131 118
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132 119 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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133 120 <span class="s">}</span>
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134 121
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135 122 <span class="c"># Initialize object properties...</span>
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136 123 <span class="c">#</span>
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137 <a name="_InitializeHydrogenBondsDescriptorsProperties-"></a> 124 <span class="k">sub </span><span class="m">_InitializeHydrogenBondsDescriptorsProperties</span> <span class="s">{</span>
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138 125 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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139 126
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140 127 <span class="k">my</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$MethodName</span><span class="s">)</span><span class="sc">;</span>
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141 128 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%NamesAndValues</span><span class="s">)</span> <span class="s">{</span>
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142 129 <span class="i">$MethodName</span> = <span class="q">"Set${Name}"</span><span class="sc">;</span>
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143 130 <span class="i">$This</span><span class="i">->$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span>
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144 131 <span class="s">}</span>
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145 132
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146 133 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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147 134 <span class="s">}</span>
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148 135
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149 136 <span class="c"># Set hydrogen bonds type...</span>
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150 137 <span class="c">#</span>
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151 <a name="SetHydrogenBondsType-"></a> 138 <span class="k">sub </span><span class="m">SetHydrogenBondsType</span> <span class="s">{</span>
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152 139 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$HydrogenBondsType</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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153 140
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154 141 <span class="k">if</span> <span class="s">(</span><span class="i">$HydrogenBondsType</span> !~ <span class="q">/^(HBondsType1|HBondsType2|HydrogenBondsType1|HydrogenBondsType2)$/i</span><span class="s">)</span> <span class="s">{</span>
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155 142 <span class="w">croak</span> <span class="q">"Error: ${ClassName}->SetHydrogenBondsType: Specified hydrogen bonds type, $HydrogenBondsType, is not supported. Valid values: HBondsType1, HBondsType2, HydrogenBondsType1, HydrogenBondsType2 ...\n "</span><span class="sc">;</span>
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156 143 <span class="s">}</span>
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157 144
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158 145 <span class="i">$This</span>->{<span class="w">HydrogenBondsType</span>} = <span class="i">$HydrogenBondsType</span><span class="sc">;</span>
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159 146
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160 147 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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161 148 <span class="s">}</span>
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162 149
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163 150 <span class="c"># Calculate number of hydrogen bond donors and acceptors in a molecule...</span>
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164 151 <span class="c">#</span>
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165 <a name="GenerateDescriptors-"></a> 152 <span class="k">sub </span><span class="m">GenerateDescriptors</span> <span class="s">{</span>
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166 153 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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167 154
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168 155 <span class="c"># Initialize descriptor values...</span>
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169 156 <span class="i">$This</span><span class="i">->_InitializeDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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170 157
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171 158 <span class="c"># Check availability of molecule...</span>
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172 159 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Molecule</span>}<span class="s">)</span> <span class="s">{</span>
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173 160 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->GenerateDescriptors: $This->{Type} molecular descriptors generation didn't succeed: Molecule data is not available: Molecule object hasn't been set..."</span><span class="sc">;</span>
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174 161 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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175 162 <span class="s">}</span>
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176 163
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177 164 <span class="c"># Calculate descriptor values...</span>
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178 165 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span><span class="i">->_CalculateDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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179 166 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->CalculateDescriptorValues: $This->{Type} molecular descriptors generation didn't succeed: Couldn't calculate number of hydrogen bond donor and accepror values..."</span><span class="sc">;</span>
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180 167 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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181 168 <span class="s">}</span>
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182 169
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183 170 <span class="c"># Set final descriptor values...</span>
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184 171 <span class="i">$This</span><span class="i">->_SetFinalDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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185 172
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186 173 <span class="s">}</span>
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187 174
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188 175 <span class="c"># Calculate number of hydrogen bond donors and acceptors...</span>
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189 176 <span class="c">#</span>
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190 <a name="_CalculateDescriptorValues-"></a> 177 <span class="k">sub </span><span class="m">_CalculateDescriptorValues</span> <span class="s">{</span>
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191 178 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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192 179 <span class="k">my</span><span class="s">(</span><span class="i">$HydrogenBondDonors</span><span class="cm">,</span> <span class="i">$HydrogenBondAcceptors</span><span class="cm">,</span> <span class="i">$Atom</span><span class="s">)</span><span class="sc">;</span>
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193 180
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194 181 <span class="i">$HydrogenBondDonors</span> = <span class="n">0</span><span class="sc">;</span>
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195 182 <span class="i">$HydrogenBondAcceptors</span> = <span class="n">0</span><span class="sc">;</span>
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196 183
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197 184 <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Molecule</span>}<span class="i">->GetAtoms</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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198 185 <span class="k">if</span> <span class="s">(</span><span class="i">$Atom</span><span class="i">->IsHydrogenBondDonor</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">HydrogenBondsType</span>}<span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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199 186 <span class="i">$HydrogenBondDonors</span>++<span class="sc">;</span>
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200 187 <span class="s">}</span>
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201 188 <span class="k">if</span> <span class="s">(</span><span class="i">$Atom</span><span class="i">->IsHydrogenBondAcceptor</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">HydrogenBondsType</span>}<span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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202 189 <span class="i">$HydrogenBondAcceptors</span>++<span class="sc">;</span>
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203 190 <span class="s">}</span>
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204 191 <span class="s">}</span>
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205 192
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206 193 <span class="c"># Track the calculated values...</span>
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207 194 <span class="i">$This</span>->{<span class="w">HydrogenBondDonors</span>} = <span class="i">$HydrogenBondDonors</span><span class="sc">;</span>
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208 195 <span class="i">$This</span>->{<span class="w">HydrogenBondAcceptors</span>} = <span class="i">$HydrogenBondAcceptors</span><span class="sc">;</span>
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209 196
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210 197 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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211 198 <span class="s">}</span>
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212 199
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213 200 <span class="c"># Setup final descriptor values...</span>
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214 201 <span class="c">#</span>
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215 <a name="_SetFinalDescriptorValues-"></a> 202 <span class="k">sub </span><span class="m">_SetFinalDescriptorValues</span> <span class="s">{</span>
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216 203 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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217 204
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218 205 <span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>} = <span class="n">1</span><span class="sc">;</span>
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219 206
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220 207 <span class="i">$This</span><span class="i">->SetDescriptorValues</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">HydrogenBondDonors</span>}<span class="cm">,</span> <span class="i">$This</span>->{<span class="w">HydrogenBondAcceptors</span>}<span class="s">)</span><span class="sc">;</span>
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221 208
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222 209 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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223 210 <span class="s">}</span>
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224 211
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225 212 <span class="c"># Return a string containg data for HydrogenBondsDescriptors object...</span>
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226 213 <span class="c">#</span>
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227 <a name="StringifyHydrogenBondsDescriptors-"></a> 214 <span class="k">sub </span><span class="m">StringifyHydrogenBondsDescriptors</span> <span class="s">{</span>
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228 215 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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229 216 <span class="k">my</span><span class="s">(</span><span class="i">$HydrogenBondsDescriptorsString</span><span class="s">)</span><span class="sc">;</span>
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230 217
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231 218 <span class="i">$HydrogenBondsDescriptorsString</span> = <span class="q">"MolecularDescriptorType: $This->{Type}; HydrogenBondsType: $This->{HydrogenBondsType}; "</span> . <span class="i">$This</span><span class="i">->_StringifyDescriptorNamesAndValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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232 219
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233 220 <span class="k">return</span> <span class="i">$HydrogenBondsDescriptorsString</span><span class="sc">;</span>
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234 221 <span class="s">}</span>
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235 222
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236 223 <span class="c"># Is it a HydrogenBondsDescriptors object?</span>
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237 <a name="_IsHydrogenBondsDescriptors-"></a> 224 <span class="k">sub </span><span class="m">_IsHydrogenBondsDescriptors</span> <span class="s">{</span>
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238 225 <span class="k">my</span><span class="s">(</span><span class="i">$Object</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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239 226
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240 227 <span class="k">return</span> <span class="s">(</span><span class="i">Scalar::Util::blessed</span><span class="s">(</span><span class="i">$Object</span><span class="s">)</span> && <span class="i">$Object</span><span class="i">->isa</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span>
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241 228 <span class="s">}</span>
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242 229
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243 <a name="EOF-"></a></pre>
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244 <p> </p>
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245 <br />
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246 <center>
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247 <img src="../../../images/h2o2.png">
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248 </center>
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249 </body>
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250 </html>
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