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|  | 13 <pre> | 
|  | 14 <a name="package-MolecularDescriptors::MolecularVolumeDescriptors-"></a>   1 <span class="k">package </span><span class="i">MolecularDescriptors::MolecularVolumeDescriptors</span><span class="sc">;</span> | 
|  | 15    2 <span class="c">#</span> | 
|  | 16    3 <span class="c"># $RCSfile: MolecularVolumeDescriptors.pm,v $</span> | 
|  | 17    4 <span class="c"># $Date: 2015/02/28 20:49:20 $</span> | 
|  | 18    5 <span class="c"># $Revision: 1.16 $</span> | 
|  | 19    6 <span class="c">#</span> | 
|  | 20    7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | 
|  | 21    8 <span class="c">#</span> | 
|  | 22    9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | 
|  | 23   10 <span class="c">#</span> | 
|  | 24   11 <span class="c"># This file is part of MayaChemTools.</span> | 
|  | 25   12 <span class="c">#</span> | 
|  | 26   13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | 
|  | 27   14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | 
|  | 28   15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | 
|  | 29   16 <span class="c"># later version.</span> | 
|  | 30   17 <span class="c">#</span> | 
|  | 31   18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | 
|  | 32   19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | 
|  | 33   20 <span class="c"># for a particular purpose.  See the GNU Lesser General Public License for more</span> | 
|  | 34   21 <span class="c"># details.</span> | 
|  | 35   22 <span class="c">#</span> | 
|  | 36   23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | 
|  | 37   24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | 
|  | 38   25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | 
|  | 39   26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | 
|  | 40   27 <span class="c">#</span> | 
|  | 41   28 | 
|  | 42   29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | 
|  | 43   30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | 
|  | 44   31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> | 
|  | 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> | 
|  | 46   33 <span class="k">use</span> <span class="w">TextUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 47   34 <span class="k">use</span> <span class="w">MathUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 48   35 <span class="k">use</span> <span class="w">Atom</span><span class="sc">;</span> | 
|  | 49   36 <span class="k">use</span> <span class="w">Molecule</span><span class="sc">;</span> | 
|  | 50   37 <span class="k">use</span> <span class="w">AtomTypes::AtomTypes</span><span class="sc">;</span> | 
|  | 51   38 <span class="k">use</span> <span class="w">MolecularDescriptors::MolecularDescriptors</span><span class="sc">;</span> | 
|  | 52   39 | 
|  | 53   40 <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> | 
|  | 54   41 | 
|  | 55   42 <span class="i">@ISA</span> = <span class="q">qw(MolecularDescriptors::MolecularDescriptors Exporter)</span><span class="sc">;</span> | 
|  | 56   43 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span> | 
|  | 57   44 <span class="i">@EXPORT_OK</span> = <span class="q">qw(GetDescriptorNames GetVDWAtomRadiiAndVolumesData)</span><span class="sc">;</span> | 
|  | 58   45 | 
|  | 59   46 <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> | 
|  | 60   47 | 
|  | 61   48 <span class="c"># Setup class variables...</span> | 
|  | 62   49 <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="cm">,</span> <span class="i">%VDWAtomRadiiAndVolumesDataMap</span><span class="s">)</span><span class="sc">;</span> | 
|  | 63   50 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 64   51 | 
|  | 65   52 <span class="c"># Overload Perl functions...</span> | 
|  | 66   53 <span class="k">use</span> <span class="w">overload</span> <span class="q">'""'</span> <span class="cm">=></span> <span class="q">'StringifyMolecularVolumeDescriptors'</span><span class="sc">;</span> | 
|  | 67   54 | 
|  | 68   55 <span class="c"># Class constructor...</span> | 
|  | 69 <a name="new-"></a>  56 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span> | 
|  | 70   57   <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 71   58 | 
|  | 72   59   <span class="c"># Initialize object...</span> | 
|  | 73   60   <span class="k">my</span> <span class="i">$This</span> = <span class="i">$Class</span><span class="i">->SUPER::new</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 74   61   <span class="k">bless</span> <span class="i">$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> | 
|  | 75   62   <span class="i">$This</span><span class="i">->_InitializeMolecularVolumeDescriptors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 76   63 | 
|  | 77   64   <span class="i">$This</span><span class="i">->_InitializeMolecularVolumeDescriptorsProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span> | 
|  | 78   65 | 
|  | 79   66   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 80   67 <span class="s">}</span> | 
|  | 81   68 | 
|  | 82   69 <span class="c"># Initialize class ...</span> | 
|  | 83 <a name="_InitializeClass-"></a>  70 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span> | 
|  | 84   71   <span class="c">#Class name...</span> | 
|  | 85   72   <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span> | 
|  | 86   73 | 
|  | 87   74   <span class="c"># Descriptor names...</span> | 
|  | 88   75   <span class="i">@DescriptorNames</span> = <span class="s">(</span><span class="q">'MolecularVolume'</span><span class="s">)</span><span class="sc">;</span> | 
|  | 89   76 | 
|  | 90   77   <span class="c"># Initialize the data hash. It'll be loaded on demand later...</span> | 
|  | 91   78   <span class="i">%VDWAtomRadiiAndVolumesDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 92   79 | 
|  | 93   80 <span class="s">}</span> | 
|  | 94   81 | 
|  | 95   82 <span class="c"># Get descriptor names as an array.</span> | 
|  | 96   83 <span class="c">#</span> | 
|  | 97   84 <span class="c"># This functionality can be either invoked as a class function or an</span> | 
|  | 98   85 <span class="c"># object method.</span> | 
|  | 99   86 <span class="c">#</span> | 
|  | 100 <a name="GetDescriptorNames-"></a>  87 <span class="k">sub </span><span class="m">GetDescriptorNames</span> <span class="s">{</span> | 
|  | 101   88   <span class="k">return</span> <span class="i">@DescriptorNames</span><span class="sc">;</span> | 
|  | 102   89 <span class="s">}</span> | 
|  | 103   90 | 
|  | 104   91 <span class="c"># Initialize object data...</span> | 
|  | 105   92 <span class="c">#</span> | 
|  | 106 <a name="_InitializeMolecularVolumeDescriptors-"></a>  93 <span class="k">sub </span><span class="m">_InitializeMolecularVolumeDescriptors</span> <span class="s">{</span> | 
|  | 107   94   <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 108   95 | 
|  | 109   96   <span class="c"># Type of MolecularDescriptor...</span> | 
|  | 110   97   <span class="i">$This</span>->{<span class="w">Type</span>} = <span class="q">'MolecularVolume'</span><span class="sc">;</span> | 
|  | 111   98 | 
|  | 112   99   <span class="c"># Intialize descriptor names and values...</span> | 
|  | 113  100   <span class="i">$This</span><span class="i">->_InitializeDescriptorNamesAndValues</span><span class="s">(</span><span class="i">@DescriptorNames</span><span class="s">)</span><span class="sc">;</span> | 
|  | 114  101 | 
|  | 115  102   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 116  103 <span class="s">}</span> | 
|  | 117  104 | 
|  | 118  105 <span class="c"># Initialize object properties...</span> | 
|  | 119  106 <span class="c">#</span> | 
|  | 120 <a name="_InitializeMolecularVolumeDescriptorsProperties-"></a> 107 <span class="k">sub </span><span class="m">_InitializeMolecularVolumeDescriptorsProperties</span> <span class="s">{</span> | 
|  | 121  108   <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 122  109 | 
|  | 123  110   <span class="k">my</span><span class="s">(</span><span class="i">$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> | 
|  | 124  111   <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> | 
|  | 125  112     <span class="i">$MethodName</span> = <span class="q">"Set${Name}"</span><span class="sc">;</span> | 
|  | 126  113     <span class="i">$This</span><span class="i">->$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span> | 
|  | 127  114   <span class="s">}</span> | 
|  | 128  115 | 
|  | 129  116   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 130  117 <span class="s">}</span> | 
|  | 131  118 | 
|  | 132  119 <span class="c"># Get VDW atom data loaded from VDW atom radii and and volumes data file as</span> | 
|  | 133  120 <span class="c"># a reference to hash with the following hash data format:</span> | 
|  | 134  121 <span class="c">#</span> | 
|  | 135  122 <span class="c"># @{$VDWAtomRadiiAndVolumesDataMap{AtomTypes}} - Array of all possible atom type symbols for all atoms</span> | 
|  | 136  123 <span class="c"># @{$VDWAtomRadiiAndVolumesDataMap->{ColLabels}} - Array of column labels</span> | 
|  | 137  124 <span class="c"># %{$VDWAtomRadiiAndVolumesDataMap->{DataCol<Num>}} - Hash keys pair: <DataCol<Num>, AtomType></span> | 
|  | 138  125 <span class="c">#</span> | 
|  | 139  126 <span class="c"># This functionality can be either invoked as a class function or an</span> | 
|  | 140  127 <span class="c"># object method.</span> | 
|  | 141  128 <span class="c">#</span> | 
|  | 142 <a name="GetVDWAtomRadiiAndVolumesData-"></a> 129 <span class="k">sub </span><span class="m">GetVDWAtomRadiiAndVolumesData</span> <span class="s">{</span> | 
|  | 143  130 | 
|  | 144  131   <span class="c"># Make sure data is loaded...</span> | 
|  | 145  132   <span class="i">_CheckAndLoadVDWAtomRadiiAndVolumesData</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 146  133 | 
|  | 147  134   <span class="k">return</span> \<span class="i">%VDWAtomRadiiAndVolumesDataMap</span><span class="sc">;</span> | 
|  | 148  135 <span class="s">}</span> | 
|  | 149  136 | 
|  | 150  137 <span class="c"># Calculate van der Waals molecular volume [ Ref 93 ] of a molecule using</span> | 
|  | 151  138 <span class="c"># atomic and bonds contributions...</span> | 
|  | 152  139 <span class="c">#</span> | 
|  | 153  140 <span class="c"># van der Waals molecular volume (A**3/molecule) is defined as:</span> | 
|  | 154  141 <span class="c">#</span> | 
|  | 155  142 <span class="c"># vdwMolecularVolume = SumOfAtomicVDWVolumeContributions - 5.92 * NumOfBonds</span> | 
|  | 156  143 <span class="c">#                      - 14.7 * NumOfAromaticRings - 3.8 * NumOfNonAromaticRings</span> | 
|  | 157  144 <span class="c">#</span> | 
|  | 158  145 <span class="c"># Methodology:</span> | 
|  | 159  146 <span class="c">#   . Add up van der Waals atom volumne of all atoms</span> | 
|  | 160  147 <span class="c">#   . Calculate molecular volume by correcting sum of atom volumes for num of</span> | 
|  | 161  148 <span class="c">#     bonds and rings</span> | 
|  | 162  149 <span class="c">#</span> | 
|  | 163  150 <span class="c"># Caveats:</span> | 
|  | 164  151 <span class="c">#   . All hydrogens must be added to molecule before calling GenerateDescriptors.</span> | 
|  | 165  152 <span class="c">#</span> | 
|  | 166 <a name="GenerateDescriptors-"></a> 153 <span class="k">sub </span><span class="m">GenerateDescriptors</span> <span class="s">{</span> | 
|  | 167  154   <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> | 
|  | 168  155 | 
|  | 169  156   <span class="c"># Initialize descriptor values...</span> | 
|  | 170  157   <span class="i">$This</span><span class="i">->_InitializeDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 171  158 | 
|  | 172  159   <span class="c"># Check availability of molecule...</span> | 
|  | 173  160   <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Molecule</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 174  161     <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->GenerateDescriptors: $This->{Type} molecular descriptors generation didn't succeed: Molecule data is not available: Molecule object hasn't been set..."</span><span class="sc">;</span> | 
|  | 175  162     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 176  163   <span class="s">}</span> | 
|  | 177  164 | 
|  | 178  165   <span class="c"># Calculate descriptor values...</span> | 
|  | 179  166   <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span><span class="i">->_CalculateDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 180  167     <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->GenerateDescriptors: $This->{Type} molecular descriptors generation didn't succeed: Couldn't calculate MolecularVolume values: van der Waals atom volume data is not available for all atoms..."</span><span class="sc">;</span> | 
|  | 181  168     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 182  169   <span class="s">}</span> | 
|  | 183  170 | 
|  | 184  171   <span class="c"># Set final descriptor values...</span> | 
|  | 185  172   <span class="i">$This</span><span class="i">->_SetFinalDescriptorValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 186  173 | 
|  | 187  174   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 188  175 <span class="s">}</span> | 
|  | 189  176 | 
|  | 190  177 <span class="c"># Calculate MolecularVolume value...</span> | 
|  | 191  178 <span class="c">#</span> | 
|  | 192 <a name="_CalculateDescriptorValues-"></a> 179 <span class="k">sub </span><span class="m">_CalculateDescriptorValues</span> <span class="s">{</span> | 
|  | 193  180   <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 194  181   <span class="k">my</span><span class="s">(</span><span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomSymbol</span><span class="cm">,</span> <span class="i">$SumOfVDWAtomVolumes</span><span class="cm">,</span> <span class="i">$Molecule</span><span class="cm">,</span> <span class="i">$MolecularVolume</span><span class="cm">,</span> <span class="i">$NumOfBonds</span><span class="cm">,</span> <span class="i">$NumOfAromaticRings</span><span class="cm">,</span> <span class="i">$NumOfNonAromaticRings</span><span class="cm">,</span> <span class="i">$VDWAtomRadiiAndVolumesDataMapRef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 195  182 | 
|  | 196  183   <span class="i">$MolecularVolume</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 197  184 | 
|  | 198  185   <span class="i">$VDWAtomRadiiAndVolumesDataMapRef</span> = <span class="i">$This</span><span class="i">->GetVDWAtomRadiiAndVolumesData</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 199  186   <span class="i">$Molecule</span> = <span class="i">$This</span>->{<span class="w">Molecule</span>}<span class="sc">;</span> | 
|  | 200  187 | 
|  | 201  188   <span class="c"># Calculate atom volumes contribution to molecular volume...</span> | 
|  | 202  189   <span class="c">#</span> | 
|  | 203  190   <span class="i">$SumOfVDWAtomVolumes</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 204  191 | 
|  | 205  192   <span class="j">ATOM:</span> <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">$Molecule</span><span class="i">->GetAtoms</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 206  193     <span class="i">$AtomID</span> = <span class="i">$Atom</span><span class="i">->GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 207  194     <span class="i">$AtomSymbol</span> = <span class="i">$Atom</span><span class="i">->GetAtomSymbol</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 208  195 | 
|  | 209  196     <span class="c"># Make sure van der Waals atom volume is available...</span> | 
|  | 210  197     <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$VDWAtomRadiiAndVolumesDataMap</span>{<span class="w">DataCol3</span>}{<span class="i">$AtomSymbol</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 211  198       <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 212  199     <span class="s">}</span> | 
|  | 213  200     <span class="i">$SumOfVDWAtomVolumes</span> += <span class="i">$VDWAtomRadiiAndVolumesDataMapRef</span>->{<span class="w">DataCol3</span>}{<span class="i">$AtomSymbol</span>}<span class="sc">;</span> | 
|  | 214  201   <span class="s">}</span> | 
|  | 215  202 | 
|  | 216  203   <span class="i">$NumOfBonds</span> = <span class="i">$Molecule</span><span class="i">->GetNumOfBonds</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 217  204   <span class="i">$NumOfAromaticRings</span> = <span class="i">$Molecule</span><span class="i">->GetNumOfAromaticRings</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 218  205   <span class="i">$NumOfNonAromaticRings</span> = <span class="i">$Molecule</span><span class="i">->GetNumOfRings</span><span class="s">(</span><span class="s">)</span> - <span class="i">$NumOfAromaticRings</span><span class="sc">;</span> | 
|  | 219  206 | 
|  | 220  207   <span class="c"># Apply correction for bonds and rings...</span> | 
|  | 221  208   <span class="i">$MolecularVolume</span> = <span class="i">$SumOfVDWAtomVolumes</span> - <span class="n">5.92</span> * <span class="i">$NumOfBonds</span> - <span class="n">14.7</span> * <span class="i">$NumOfAromaticRings</span> - <span class="n">3.8</span> * <span class="i">$NumOfNonAromaticRings</span><span class="sc">;</span> | 
|  | 222  209 | 
|  | 223  210   <span class="c"># Track the calculated values...</span> | 
|  | 224  211   <span class="i">$This</span>->{<span class="w">MolecularVolume</span>} = <span class="i">MathUtil::round</span><span class="s">(</span><span class="i">$MolecularVolume</span><span class="cm">,</span> <span class="n">2</span><span class="s">)</span><span class="sc">;</span> | 
|  | 225  212 | 
|  | 226  213   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 227  214 <span class="s">}</span> | 
|  | 228  215 | 
|  | 229  216 <span class="c"># Setup final descriptor values...</span> | 
|  | 230  217 <span class="c">#</span> | 
|  | 231 <a name="_SetFinalDescriptorValues-"></a> 218 <span class="k">sub </span><span class="m">_SetFinalDescriptorValues</span> <span class="s">{</span> | 
|  | 232  219   <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 233  220 | 
|  | 234  221   <span class="i">$This</span>->{<span class="w">DescriptorsGenerated</span>} = <span class="n">1</span><span class="sc">;</span> | 
|  | 235  222 | 
|  | 236  223   <span class="i">$This</span><span class="i">->SetDescriptorValues</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">MolecularVolume</span>}<span class="s">)</span><span class="sc">;</span> | 
|  | 237  224 | 
|  | 238  225   <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | 
|  | 239  226 <span class="s">}</span> | 
|  | 240  227 | 
|  | 241  228 <span class="c"># Return a string containg data for MolecularVolumeDescriptors object...</span> | 
|  | 242  229 <span class="c">#</span> | 
|  | 243 <a name="StringifyMolecularVolumeDescriptors-"></a> 230 <span class="k">sub </span><span class="m">StringifyMolecularVolumeDescriptors</span> <span class="s">{</span> | 
|  | 244  231   <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 245  232   <span class="k">my</span><span class="s">(</span><span class="i">$MolecularVolumeDescriptorsString</span><span class="s">)</span><span class="sc">;</span> | 
|  | 246  233 | 
|  | 247  234   <span class="i">$MolecularVolumeDescriptorsString</span> = <span class="q">"MolecularDescriptorType: $This->{Type}; "</span> . <span class="i">$This</span><span class="i">->_StringifyDescriptorNamesAndValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 248  235 | 
|  | 249  236   <span class="k">return</span> <span class="i">$MolecularVolumeDescriptorsString</span><span class="sc">;</span> | 
|  | 250  237 <span class="s">}</span> | 
|  | 251  238 | 
|  | 252  239 <span class="c"># Is it a MolecularVolumeDescriptors object?</span> | 
|  | 253 <a name="_IsMolecularVolumeDescriptors-"></a> 240 <span class="k">sub </span><span class="m">_IsMolecularVolumeDescriptors</span> <span class="s">{</span> | 
|  | 254  241   <span class="k">my</span><span class="s">(</span><span class="i">$Object</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 255  242 | 
|  | 256  243   <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">$ClassName</span><span class="s">)</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span> | 
|  | 257  244 <span class="s">}</span> | 
|  | 258  245 | 
|  | 259  246 <span class="c"># Check and load van der Waals atom radii and volumes data...</span> | 
|  | 260  247 <span class="c">#</span> | 
|  | 261 <a name="_CheckAndLoadVDWAtomRadiiAndVolumesData-"></a> 248 <span class="k">sub </span><span class="m">_CheckAndLoadVDWAtomRadiiAndVolumesData</span> <span class="s">{</span> | 
|  | 262  249 | 
|  | 263  250   <span class="c"># Is it already loaded?</span> | 
|  | 264  251   <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$VDWAtomRadiiAndVolumesDataMap</span>{<span class="w">AtomTypes</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 265  252     <span class="k">return</span><span class="sc">;</span> | 
|  | 266  253   <span class="s">}</span> | 
|  | 267  254 | 
|  | 268  255   <span class="i">_LoadVDWAtomRadiiAndVolumesData</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 269  256 <span class="s">}</span> | 
|  | 270  257 | 
|  | 271  258 <span class="c"># Initialize van der Waals atom radii and volumes data from the file...</span> | 
|  | 272  259 <span class="c">#</span> | 
|  | 273  260 <span class="c"># Format:</span> | 
|  | 274  261 <span class="c">#</span> | 
|  | 275  262 <span class="c"># "AtomTypeSymbol","VDWAtomRadius(A)","VDWAtomVolume(A**3)/molecule"</span> | 
|  | 276  263 <span class="c"># "H","1.20","7.24"</span> | 
|  | 277  264 <span class="c"># "He","1.40","11.49"</span> | 
|  | 278  265 <span class="c">#</span> | 
|  | 279 <a name="_LoadVDWAtomRadiiAndVolumesData-"></a> 266 <span class="k">sub  </span><span class="m">_LoadVDWAtomRadiiAndVolumesData</span> <span class="s">{</span> | 
|  | 280  267   <span class="k">my</span><span class="s">(</span><span class="i">$VDWAtomDataFile</span><span class="cm">,</span> <span class="i">$MayaChemToolsLibDir</span><span class="s">)</span><span class="sc">;</span> | 
|  | 281  268 | 
|  | 282  269   <span class="i">$MayaChemToolsLibDir</span> = <span class="i">FileUtil::GetMayaChemToolsLibDirName</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 283  270 | 
|  | 284  271   <span class="i">$VDWAtomDataFile</span> =  <span class="q">"$MayaChemToolsLibDir"</span> . <span class="q">"/data/VDWAtomRadiiAndVolumes.csv"</span><span class="sc">;</span> | 
|  | 285  272   <span class="k">if</span> <span class="s">(</span>! <span class="k">-e</span> <span class="q">"$VDWAtomDataFile"</span><span class="s">)</span> <span class="s">{</span> | 
|  | 286  273     <span class="w">croak</span> <span class="q">"Error: MayaChemTools package file, $VDWAtomDataFile, is missing: Possible installation problems..."</span><span class="sc">;</span> | 
|  | 287  274   <span class="s">}</span> | 
|  | 288  275 | 
|  | 289  276   <span class="i">%VDWAtomRadiiAndVolumesDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 290  277   <span class="i">AtomTypes::AtomTypes::LoadAtomTypesData</span><span class="s">(</span><span class="i">$VDWAtomDataFile</span><span class="cm">,</span> \<span class="i">%VDWAtomRadiiAndVolumesDataMap</span><span class="s">)</span><span class="sc">;</span> | 
|  | 291  278 <span class="s">}</span><span class="sc">;</span> | 
|  | 292  279 | 
|  | 293 <a name="EOF-"></a></pre> | 
|  | 294 <p> </p> | 
|  | 295 <br /> | 
|  | 296 <center> | 
|  | 297 <img src="../../../images/h2o2.png"> | 
|  | 298 </center> | 
|  | 299 </body> | 
|  | 300 </html> |