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14 <a name="package-Fingerprints::ExtendedConnectivityFingerprints-"></a> 1 <span class="k">package </span><span class="i">Fingerprints::ExtendedConnectivityFingerprints</span><span class="sc">;</span>
15 2 <span class="c">#</span>
16 3 <span class="c"># $RCSfile: ExtendedConnectivityFingerprints.pm,v $</span>
17 4 <span class="c"># $Date: 2015/02/28 20:48:54 $</span>
18 5 <span class="c"># $Revision: 1.39 $</span>
19 6 <span class="c">#</span>
20 7 <span class="c"># Author: Manish Sud &lt;msud@san.rr.com&gt;</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 &lt;http://www.gnu.org/licenses/&gt; 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">TextUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
46 33 <span class="k">use</span> <span class="w">MathUtil</span> <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
47 34 <span class="k">use</span> <span class="w">Fingerprints::Fingerprints</span><span class="sc">;</span>
48 35 <span class="k">use</span> <span class="w">Molecule</span><span class="sc">;</span>
49 36 <span class="k">use</span> <span class="w">AtomTypes::AtomicInvariantsAtomTypes</span><span class="sc">;</span>
50 37 <span class="k">use</span> <span class="w">AtomTypes::FunctionalClassAtomTypes</span><span class="sc">;</span>
51 38 <span class="k">use</span> <span class="w">AtomTypes::DREIDINGAtomTypes</span><span class="sc">;</span>
52 39 <span class="k">use</span> <span class="w">AtomTypes::EStateAtomTypes</span><span class="sc">;</span>
53 40 <span class="k">use</span> <span class="w">AtomTypes::MMFF94AtomTypes</span><span class="sc">;</span>
54 41 <span class="k">use</span> <span class="w">AtomTypes::SLogPAtomTypes</span><span class="sc">;</span>
55 42 <span class="k">use</span> <span class="w">AtomTypes::SYBYLAtomTypes</span><span class="sc">;</span>
56 43 <span class="k">use</span> <span class="w">AtomTypes::TPSAAtomTypes</span><span class="sc">;</span>
57 44 <span class="k">use</span> <span class="w">AtomTypes::UFFAtomTypes</span><span class="sc">;</span>
58 45
59 46 <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>
60 47
61 48 <span class="i">@ISA</span> = <span class="q">qw(Fingerprints::Fingerprints Exporter)</span><span class="sc">;</span>
62 49 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span>
63 50 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span>
64 51
65 52 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=&gt;</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>
66 53
67 54 <span class="c"># Setup class variables...</span>
68 55 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span>
69 56 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
70 57
71 58 <span class="c"># Overload Perl functions...</span>
72 59 <span class="k">use</span> <span class="w">overload</span> <span class="q">&#39;&quot;&quot;&#39;</span> <span class="cm">=&gt;</span> <span class="q">&#39;StringifyExtendedConnectivityFingerprints&#39;</span><span class="sc">;</span>
73 60
74 61 <span class="c"># Class constructor...</span>
75 <a name="new-"></a> 62 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span>
76 63 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
77 64
78 65 <span class="c"># Initialize object...</span>
79 66 <span class="k">my</span> <span class="i">$This</span> = <span class="i">$Class</span><span class="i">-&gt;SUPER::new</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
80 67 <span class="k">bless</span> <span class="i">$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>
81 68 <span class="i">$This</span><span class="i">-&gt;_InitializeExtendedConnectivityFingerprints</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
82 69
83 70 <span class="i">$This</span><span class="i">-&gt;_InitializeExtendedConnectivityFingerprintsProperties</span><span class="s">(</span><span class="i">%NamesAndValues</span><span class="s">)</span><span class="sc">;</span>
84 71
85 72 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
86 73 <span class="s">}</span>
87 74
88 75 <span class="c"># Initialize object data...</span>
89 76 <span class="c">#</span>
90 <a name="_InitializeExtendedConnectivityFingerprints-"></a> 77 <span class="k">sub </span><span class="m">_InitializeExtendedConnectivityFingerprints</span> <span class="s">{</span>
91 78 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
92 79
93 80 <span class="c"># Type of fingerprint to generate:</span>
94 81 <span class="c">#</span>
95 82 <span class="c"># ExtendedConnectivity - Set of integer identifiers corresponding to structurally unique features</span>
96 83 <span class="c"># ExtendedConnectivityCount - Set of integer identifiers corresponding to structurally unique features and their count</span>
97 84 <span class="c"># ExtendedConnectivityBits - A bit vector indicating presence/absence of structurally unique features</span>
98 85 <span class="c">#</span>
99 86 <span class="i">$This</span>-&gt;{<span class="w">Type</span>} = <span class="q">&#39;ExtendedConnectivity&#39;</span><span class="sc">;</span>
100 87
101 88 <span class="c"># Atomic neighborhoods radius for extended connectivity...</span>
102 89 <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>} = <span class="n">2</span><span class="sc">;</span>
103 90
104 91 <span class="c"># Size of bit bector to use during generation of ExtendedConnectivityBits fingerprints...</span>
105 92 <span class="i">$This</span>-&gt;{<span class="w">Size</span>} = <span class="n">1024</span><span class="sc">;</span>
106 93
107 94 <span class="c"># Min and max size of bit bector to use during generation of ExtendedConnectivityBits fingerprints...</span>
108 95 <span class="i">$This</span>-&gt;{<span class="w">MinSize</span>} = <span class="n">32</span><span class="sc">;</span>
109 96 <span class="i">$This</span>-&gt;{<span class="w">MaxSize</span>} = <span class="n">2</span>**<span class="n">32</span><span class="sc">;</span>
110 97
111 98 <span class="c"># Type of atom attributes to use for initial identifier assignment to non-hydrogen atoms</span>
112 99 <span class="c"># during the calculation of extended connectivity fingerprints [ Ref 48, Ref 52 ]...</span>
113 100 <span class="c">#</span>
114 101 <span class="c"># Currently supported values are: AtomicInvariantsAtomTypes, FunctionalClassAtomTypes,</span>
115 102 <span class="c"># DREIDINGAtomTypes, EStateAtomTypes, MMFF94AtomTypes, SLogPAtomTypes, SYBYLAtomTypes,</span>
116 103 <span class="c"># TPSAAtomTypes, UFFAtomTypes</span>
117 104 <span class="c">#</span>
118 105 <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
119 106
120 107 <span class="c"># Random number generator to use during generation of fingerprints bit-vector</span>
121 108 <span class="c"># string: Perl CORE::rand or MayaChemTools MathUtil::random function.</span>
122 109 <span class="c">#</span>
123 110 <span class="c"># The random number generator implemented in MayaChemTools is a variant of</span>
124 111 <span class="c"># linear congruential generator (LCG) as described by Miller et al. [ Ref 120 ].</span>
125 112 <span class="c"># It is also referred to as Lehmer random number generator or Park-Miller</span>
126 113 <span class="c"># random number generator.</span>
127 114 <span class="c">#</span>
128 115 <span class="c"># Unlike Perl&#39;s core random number generator function rand, the random number</span>
129 116 <span class="c"># generator implemented in MayaChemTools, MathUtil::random, generates consistent</span>
130 117 <span class="c"># random values across different platformsfor a specific random seed and leads</span>
131 118 <span class="c"># to generation of portable fingerprints bit-vector strings.</span>
132 119 <span class="c">#</span>
133 120 <span class="i">$This</span>-&gt;{<span class="w">UsePerlCoreRandom</span>} = <span class="n">1</span><span class="sc">;</span>
134 121
135 122 <span class="c"># Atom neighorhoods up to specified neighborhood radius...</span>
136 123 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
137 124
138 125 <span class="c"># Atom identifiers at different neighborhoods up to specified neighborhood radius...</span>
139 126 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
140 127
141 128 <span class="c"># Structurally unique atom identifiers at different neighborhoods up to specified neighborhood radius...</span>
142 129 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
143 130 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
144 131
145 132 <span class="c"># Unique atom identifiers at different neighborhoods up to specified neighborhood radius...</span>
146 133 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
147 134 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiersCount</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
148 135
149 136 <span class="c"># Structure feature information at different neighborhoods up to specified neighborhood</span>
150 137 <span class="c"># radius used during removal of atom indentifiers which are structually equivalent...</span>
151 138 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
152 139 <span class="s">}</span>
153 140
154 141 <span class="c"># Initialize class ...</span>
155 <a name="_InitializeClass-"></a> 142 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span>
156 143 <span class="c">#Class name...</span>
157 144 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span>
158 145 <span class="s">}</span>
159 146
160 147 <span class="c"># Initialize object properties....</span>
161 <a name="_InitializeExtendedConnectivityFingerprintsProperties-"></a> 148 <span class="k">sub </span><span class="m">_InitializeExtendedConnectivityFingerprintsProperties</span> <span class="s">{</span>
162 149 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">%NamesAndValues</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
163 150
164 151 <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">$MethodName</span><span class="s">)</span><span class="sc">;</span>
165 152 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%NamesAndValues</span><span class="s">)</span> <span class="s">{</span>
166 153 <span class="i">$MethodName</span> = <span class="q">&quot;Set${Name}&quot;</span><span class="sc">;</span>
167 154 <span class="i">$This</span><span class="i">-&gt;$MethodName</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="sc">;</span>
168 155 <span class="s">}</span>
169 156
170 157 <span class="c"># Make sure molecule object was specified...</span>
171 158 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$NamesAndValues</span>{<span class="w">Molecule</span>}<span class="s">)</span> <span class="s">{</span>
172 159 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;New: Object can&#39;t be instantiated without specifying molecule...&quot;</span><span class="sc">;</span>
173 160 <span class="s">}</span>
174 161
175 162 <span class="c"># Make sure AtomIdentifierType was specified...</span>
176 163 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$NamesAndValues</span>{<span class="w">AtomIdentifierType</span>}<span class="s">)</span> <span class="s">{</span>
177 164 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;New: Object can&#39;t be instantiated without specifying AtomIdentifierType...&quot;</span><span class="sc">;</span>
178 165 <span class="s">}</span>
179 166
180 167 <span class="c"># Make sure it&#39;s power of 2...</span>
181 168 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$NamesAndValues</span>{<span class="w">Size</span>}<span class="s">)</span> <span class="s">{</span>
182 169 <span class="k">if</span> <span class="s">(</span>!<span class="i">TextUtil::IsNumberPowerOfNumber</span><span class="s">(</span><span class="i">$NamesAndValues</span>{<span class="w">Size</span>}<span class="cm">,</span> <span class="n">2</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
183 170 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;New: Specified size value, $NamesAndValues{Size}, must be power of 2...&quot;</span><span class="sc">;</span>
184 171 <span class="s">}</span>
185 172 <span class="s">}</span>
186 173
187 174 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivity$/i</span><span class="s">)</span> <span class="s">{</span>
188 175 <span class="i">$This</span><span class="i">-&gt;_InitializeExtendedConnectivityFingerprintsVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
189 176 <span class="s">}</span>
190 177 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivityCount$/i</span><span class="s">)</span> <span class="s">{</span>
191 178 <span class="i">$This</span><span class="i">-&gt;_InitializeExtendedConnectivityCountFingerprintsVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
192 179 <span class="s">}</span>
193 180 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivityBits$/i</span><span class="s">)</span> <span class="s">{</span>
194 181 <span class="i">$This</span><span class="i">-&gt;_InitializeExtendedConnectivityBitsFingerprintsBitVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
195 182 <span class="s">}</span>
196 183 <span class="k">else</span> <span class="s">{</span>
197 184 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;_InitializeExtendedConnectivityFingerprintsProperties: Unknown ExtendedConnectivity fingerprints type: $This-&gt;{Type}; Supported fingerprints types: ExtendedConnectivity, ExtendedConnectivityCount or ExtendedConnectivityBits...&quot;</span><span class="sc">;</span>
198 185 <span class="s">}</span>
199 186
200 187 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
201 188 <span class="s">}</span>
202 189
203 190 <span class="c"># Initialize extended connectivity fingerprints vector...</span>
204 191 <span class="c">#</span>
205 <a name="_InitializeExtendedConnectivityFingerprintsVector-"></a> 192 <span class="k">sub </span><span class="m">_InitializeExtendedConnectivityFingerprintsVector</span> <span class="s">{</span>
206 193 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
207 194
208 195 <span class="c"># Type of vector...</span>
209 196 <span class="i">$This</span>-&gt;{<span class="w">VectorType</span>} = <span class="q">&#39;FingerprintsVector&#39;</span><span class="sc">;</span>
210 197
211 198 <span class="c"># Type of FingerprintsVector...</span>
212 199 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVectorType</span>} = <span class="q">&#39;AlphaNumericalValues&#39;</span><span class="sc">;</span>
213 200
214 201 <span class="i">$This</span><span class="i">-&gt;_InitializeFingerprintsVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
215 202
216 203 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
217 204 <span class="s">}</span>
218 205
219 206 <span class="c"># Initialize extended connectivity count fingerprints vector...</span>
220 207 <span class="c">#</span>
221 <a name="_InitializeExtendedConnectivityCountFingerprintsVector-"></a> 208 <span class="k">sub </span><span class="m">_InitializeExtendedConnectivityCountFingerprintsVector</span> <span class="s">{</span>
222 209 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
223 210
224 211 <span class="c"># Type of vector...</span>
225 212 <span class="i">$This</span>-&gt;{<span class="w">VectorType</span>} = <span class="q">&#39;FingerprintsVector&#39;</span><span class="sc">;</span>
226 213
227 214 <span class="c"># Type of FingerprintsVector...</span>
228 215 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVectorType</span>} = <span class="q">&#39;NumericalValues&#39;</span><span class="sc">;</span>
229 216
230 217 <span class="i">$This</span><span class="i">-&gt;_InitializeFingerprintsVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
231 218
232 219 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
233 220 <span class="s">}</span>
234 221
235 222 <span class="c"># Initialize extended connectivity bit fingerprints vector...</span>
236 223 <span class="c">#</span>
237 <a name="_InitializeExtendedConnectivityBitsFingerprintsBitVector-"></a> 224 <span class="k">sub </span><span class="m">_InitializeExtendedConnectivityBitsFingerprintsBitVector</span> <span class="s">{</span>
238 225 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
239 226
240 227 <span class="c"># Type of vector...</span>
241 228 <span class="i">$This</span>-&gt;{<span class="w">VectorType</span>} = <span class="q">&#39;FingerprintsBitVector&#39;</span><span class="sc">;</span>
242 229
243 230 <span class="i">$This</span><span class="i">-&gt;_InitializeFingerprintsBitVector</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
244 231
245 232 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
246 233 <span class="s">}</span>
247 234
248 235 <span class="c"># Set type...</span>
249 236 <span class="c">#</span>
250 <a name="SetType-"></a> 237 <span class="k">sub </span><span class="m">SetType</span> <span class="s">{</span>
251 238 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Type</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
252 239
253 240 <span class="k">if</span> <span class="s">(</span><span class="i">$Type</span> =~ <span class="q">/^ExtendedConnectivity$/i</span><span class="s">)</span> <span class="s">{</span>
254 241 <span class="i">$This</span>-&gt;{<span class="w">Type</span>} = <span class="q">&#39;ExtendedConnectivity&#39;</span><span class="sc">;</span><span class="sc">;</span>
255 242 <span class="s">}</span>
256 243 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Type</span> =~ <span class="q">/^ExtendedConnectivityCount$/i</span><span class="s">)</span> <span class="s">{</span>
257 244 <span class="i">$This</span>-&gt;{<span class="w">Type</span>} = <span class="q">&#39;ExtendedConnectivityCount&#39;</span><span class="sc">;</span><span class="sc">;</span>
258 245 <span class="s">}</span>
259 246 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Type</span> =~ <span class="q">/^ExtendedConnectivityBits$/i</span><span class="s">)</span> <span class="s">{</span>
260 247 <span class="i">$This</span>-&gt;{<span class="w">Type</span>} = <span class="q">&#39;ExtendedConnectivityBits&#39;</span><span class="sc">;</span><span class="sc">;</span>
261 248 <span class="s">}</span>
262 249 <span class="k">else</span> <span class="s">{</span>
263 250 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetType: Unknown ExtendedConnectivity fingerprints type: $This-&gt;{Type}; Supported fingerprints types: ExtendedConnectivity, ExtendedConnectivityCount or ExtendedConnectivityBits...&quot;</span><span class="sc">;</span>
264 251 <span class="s">}</span>
265 252 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
266 253 <span class="s">}</span>
267 254
268 255 <span class="c"># Disable vector type change...</span>
269 256 <span class="c">#</span>
270 <a name="SetVectorType-"></a> 257 <span class="k">sub </span><span class="m">SetVectorType</span> <span class="s">{</span>
271 258 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Type</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
272 259
273 260 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetVectorType: Can&#39;t change vector type...&quot;</span><span class="sc">;</span>
274 261
275 262 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
276 263 <span class="s">}</span>
277 264
278 265 <span class="c"># Disable vector type change...</span>
279 266 <span class="c">#</span>
280 <a name="SetFingerprintsVectorType-"></a> 267 <span class="k">sub </span><span class="m">SetFingerprintsVectorType</span> <span class="s">{</span>
281 268 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Type</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
282 269
283 270 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetFingerprintsVectorType: Can&#39;t change fingerprints vector type...&quot;</span><span class="sc">;</span>
284 271
285 272 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
286 273 <span class="s">}</span>
287 274
288 275 <span class="c"># Set intial atom identifier type..</span>
289 276 <span class="c">#</span>
290 <a name="SetAtomIdentifierType-"></a> 277 <span class="k">sub </span><span class="m">SetAtomIdentifierType</span> <span class="s">{</span>
291 278 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$IdentifierType</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
292 279
293 280 <span class="k">if</span> <span class="s">(</span><span class="i">$IdentifierType</span> !~ <span class="q">/^(AtomicInvariantsAtomTypes|FunctionalClassAtomTypes|DREIDINGAtomTypes|EStateAtomTypes|MMFF94AtomTypes|SLogPAtomTypes|SYBYLAtomTypes|TPSAAtomTypes|UFFAtomTypes)$/i</span><span class="s">)</span> <span class="s">{</span>
294 281 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetAtomIdentifierType: Specified value, $IdentifierType, for AtomIdentifierType is not vaild. Supported types in current release of MayaChemTools: AtomicInvariantsAtomTypes, FunctionalClassAtomTypes, DREIDINGAtomTypes, EStateAtomTypes, MMFF94AtomTypes, SLogPAtomTypes, SYBYLAtomTypes, TPSAAtomTypes and UFFAtomTypes.&quot;</span><span class="sc">;</span>
295 282 <span class="s">}</span>
296 283
297 284 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>}<span class="s">)</span> <span class="s">{</span>
298 285 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetAtomIdentifierType: Can&#39;t change intial atom identifier type: It&#39;s already set...&quot;</span><span class="sc">;</span>
299 286 <span class="s">}</span>
300 287
301 288 <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} = <span class="i">$IdentifierType</span><span class="sc">;</span>
302 289
303 290 <span class="c"># Initialize identifier type information...</span>
304 291 <span class="i">$This</span><span class="i">-&gt;_InitializeAtomIdentifierTypeInformation</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
305 292
306 293 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
307 294 <span class="s">}</span>
308 295
309 296 <span class="c"># Set atom neighborhood radius...</span>
310 297 <span class="c">#</span>
311 <a name="SetNeighborhoodRadius-"></a> 298 <span class="k">sub </span><span class="m">SetNeighborhoodRadius</span> <span class="s">{</span>
312 299 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Value</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
313 300
314 301 <span class="k">if</span> <span class="s">(</span>!<span class="i">TextUtil::IsInteger</span><span class="s">(</span><span class="i">$Value</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
315 302 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetNeighborhoodRadius: NeighborhoodRadius value, $Value, is not valid: It must be an integer...&quot;</span><span class="sc">;</span>
316 303 <span class="s">}</span>
317 304
318 305 <span class="k">if</span> <span class="s">(</span><span class="i">$Value</span> &lt; <span class="n">0</span> <span class="s">)</span> <span class="s">{</span>
319 306 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetNeighborhoodRadius: NeighborhoodRadius value, $Value, is not valid: It must be &gt;= 0...&quot;</span><span class="sc">;</span>
320 307 <span class="s">}</span>
321 308 <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>} = <span class="i">$Value</span><span class="sc">;</span>
322 309
323 310 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
324 311 <span class="s">}</span>
325 312
326 313 <span class="c"># Generate fingerprints description...</span>
327 314 <span class="c">#</span>
328 <a name="GetDescription-"></a> 315 <span class="k">sub </span><span class="m">GetDescription</span> <span class="s">{</span>
329 316 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
330 317
331 318 <span class="c"># Is description explicity set?</span>
332 319 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">Description</span>}<span class="s">)</span> <span class="s">{</span>
333 320 <span class="k">return</span> <span class="i">$This</span>-&gt;{<span class="w">Description</span>}<span class="sc">;</span>
334 321 <span class="s">}</span>
335 322
336 323 <span class="c"># Generate fingerprints description...</span>
337 324
338 325 <span class="k">return</span> <span class="q">&quot;$This-&gt;{Type}:$This-&gt;{AtomIdentifierType}:Radius$This-&gt;{NeighborhoodRadius}&quot;</span><span class="sc">;</span>
339 326 <span class="s">}</span>
340 327
341 328 <span class="c"># Generate fingerprints...</span>
342 329 <span class="c">#</span>
343 330 <span class="c"># Methodology:</span>
344 331 <span class="c"># . Assign initial atom identfiers to all non-hydrogen atoms in the molecule</span>
345 332 <span class="c">#</span>
346 333 <span class="c"># . Remove duplicates from the initial identifiers and add them to list corresponding</span>
347 334 <span class="c"># to molecule fingerprint</span>
348 335 <span class="c">#</span>
349 336 <span class="c"># . For NeighborhoodRadius value of 0, just return the molecule fingerprint list</span>
350 337 <span class="c">#</span>
351 338 <span class="c"># . For each NeighborhoodRadius level</span>
352 339 <span class="c"># . For each non-hydrogen CentralAtom at this NeighborhoodRadius level</span>
353 340 <span class="c"># . For each non-hydrogen SuccessorNeighborAtom</span>
354 341 <span class="c"># . Collect (BondOrder AtomIdentifier) pair of values corresponding to</span>
355 342 <span class="c"># (CentralAtom SuccessorNeighborAtom) and add it to a list</span>
356 343 <span class="c">#</span>
357 344 <span class="c"># . Sort list containing (BondOrder AtomIdentifier) pairs first by BondOrder followed</span>
358 345 <span class="c"># by AtomIdendifiers to make these values graph invariant</span>
359 346 <span class="c"># . Generate a hash code for the values in the list</span>
360 347 <span class="c"># . Assign hash code as new atom identifier at the current NeighborhoodRadius level</span>
361 348 <span class="c"># . Save all atoms and bonds corresponding to the substructure involved in</span>
362 349 <span class="c"># generating the hash code to be used for identifying structural duplicate hash code</span>
363 350 <span class="c">#</span>
364 351 <span class="c"># . Add the new identifier to the molecule fingerprint list making sure it&#39;s not a duplicate</span>
365 352 <span class="c"># identifier</span>
366 353 <span class="c">#</span>
367 354 <span class="c"># Hash code atom identifier deduplication:</span>
368 355 <span class="c"># . Track/remove the identifier generated at higher neighborhood radius level</span>
369 356 <span class="c">#</span>
370 357 <span class="c"># Structural atom identifier deduplication:</span>
371 358 <span class="c"># . For equivalent atoms and bonds corresponding to substructure at a NeighborhoodRadius level,</span>
372 359 <span class="c"># track/remove the atom identifier with largest value</span>
373 360 <span class="c">#</span>
374 361 <span class="c">#</span>
375 <a name="GenerateFingerprints-"></a> 362 <span class="k">sub </span><span class="m">GenerateFingerprints</span> <span class="s">{</span>
376 363 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
377 364
378 365 <span class="c"># Cache appropriate molecule data...</span>
379 366 <span class="i">$This</span><span class="i">-&gt;_SetupMoleculeDataCache</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
380 367
381 368 <span class="c"># Assign intial atom identifers...</span>
382 369 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span><span class="i">-&gt;_AssignInitialAtomIdentifiers</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
383 370 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;GenerateFingerprints: $This-&gt;{AtomIdentifierType} fingerprints generation didn&#39;t succeed: Couldn&#39;t assign valid $This-&gt;{AtomIdentifierType} to all atoms...&quot;</span><span class="sc">;</span>
384 371 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
385 372 <span class="s">}</span>
386 373
387 374 <span class="c"># Identify atom neighborhoods up to specified radius...</span>
388 375 <span class="i">$This</span><span class="i">-&gt;_GetAtomNeighborhoods</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
389 376
390 377 <span class="c"># Assign atom identifiers to central atoms considering atom neighborhoods at each</span>
391 378 <span class="c"># radius level...</span>
392 379 <span class="i">$This</span><span class="i">-&gt;_AssignAtomIdentifiersToAtomNeighborhoods</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
393 380
394 381 <span class="c"># Remove duplicates identifiers...</span>
395 382 <span class="i">$This</span><span class="i">-&gt;_RemoveDuplicateAtomIdentifiers</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
396 383
397 384 <span class="c"># Set final fingerprints...</span>
398 385 <span class="i">$This</span><span class="i">-&gt;_SetFinalFingerprints</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
399 386
400 387 <span class="c"># Clear cached molecule data...</span>
401 388 <span class="i">$This</span><span class="i">-&gt;_ClearMoleculeDataCache</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
402 389
403 390 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
404 391 <span class="s">}</span>
405 392
406 393 <span class="c"># Assign appropriate initial atom identifiers...</span>
407 394 <span class="c">#</span>
408 395 <span class="c"># Generation of initial identifier for a specific atom involves:</span>
409 396 <span class="c"># . Values of the specified atom attributes are appended in a specific order to</span>
410 397 <span class="c"># generate an initial atom identifier string</span>
411 398 <span class="c"># . A 32 bit unsigned integer hash key, using TextUtil::HashCode function, is</span>
412 399 <span class="c"># generated for the atom indentifier and assigned to the atom as initial</span>
413 400 <span class="c"># atom identifier.</span>
414 401 <span class="c">#</span>
415 <a name="_AssignInitialAtomIdentifiers-"></a> 402 <span class="k">sub </span><span class="m">_AssignInitialAtomIdentifiers</span> <span class="s">{</span>
416 403 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
417 404 <span class="k">my</span><span class="s">(</span><span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="cm">,</span> <span class="i">$SpecifiedAtomTypes</span><span class="cm">,</span> <span class="i">$IgnoreHydrogens</span><span class="cm">,</span> <span class="i">$AtomType</span><span class="cm">,</span> <span class="i">$InitialAtomTypeString</span><span class="cm">,</span> <span class="i">$InitialAtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
418 405
419 406 <span class="c"># Initialize atom identifiers...</span>
420 407 <span class="i">$This</span><span class="i">-&gt;_InitializeAtomIdentifiers</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
421 408
422 409 <span class="c"># Set up atom types...</span>
423 410 <span class="i">$IgnoreHydrogens</span> = <span class="n">1</span><span class="sc">;</span>
424 411 <span class="i">$SpecifiedAtomTypes</span> = <span class="k">undef</span><span class="sc">;</span>
425 412
426 413 <span class="j">IDENTIFIERTYPE:</span> <span class="s">{</span>
427 414 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^AtomicInvariantsAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
428 415 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::AtomicInvariantsAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="cm">,</span> <span class="q">&#39;AtomicInvariantsToUse&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}<span class="s">)</span><span class="sc">;</span>
429 416 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
430 417 <span class="s">}</span>
431 418
432 419 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^FunctionalClassAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
433 420 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::FunctionalClassAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="cm">,</span> <span class="q">&#39;FunctionalClassesToUse&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}<span class="s">)</span><span class="sc">;</span>
434 421 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
435 422 <span class="s">}</span>
436 423
437 424 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^DREIDINGAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
438 425 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::DREIDINGAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
439 426 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
440 427 <span class="s">}</span>
441 428
442 429 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^EStateAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
443 430 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::EStateAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
444 431 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
445 432 <span class="s">}</span>
446 433
447 434 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^MMFF94AtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
448 435 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::MMFF94AtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
449 436 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
450 437 <span class="s">}</span>
451 438
452 439 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^SLogPAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
453 440 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::SLogPAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
454 441 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
455 442 <span class="s">}</span>
456 443
457 444 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^SYBYLAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
458 445 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::SYBYLAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
459 446 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
460 447 <span class="s">}</span>
461 448
462 449 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^TPSAAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
463 450 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::TPSAAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnorePhosphorus&#39;</span> <span class="cm">=&gt;</span> <span class="n">0</span><span class="cm">,</span> <span class="q">&#39;IgnoreSulfur&#39;</span> <span class="cm">=&gt;</span> <span class="n">0</span><span class="s">)</span><span class="sc">;</span>
464 451 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
465 452 <span class="s">}</span>
466 453
467 454 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^UFFAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
468 455 <span class="i">$SpecifiedAtomTypes</span> = <span class="i">new</span> <span class="i">AtomTypes::UFFAtomTypes</span><span class="s">(</span><span class="q">&#39;Molecule&#39;</span> <span class="cm">=&gt;</span> <span class="i">$This</span>-&gt;{<span class="w">Molecule</span>}<span class="cm">,</span> <span class="q">&#39;IgnoreHydrogens&#39;</span> <span class="cm">=&gt;</span> <span class="i">$IgnoreHydrogens</span><span class="s">)</span><span class="sc">;</span>
469 456 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
470 457 <span class="s">}</span>
471 458
472 459 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;_AssignInitialAtomIdentifiers: Couldn&#39;t assign intial atom identifiers: InitialAtomIdentifierType $This-&gt;{AtomIdentifierType} is not supported...&quot;</span><span class="sc">;</span>
473 460 <span class="s">}</span>
474 461
475 462 <span class="c"># Assign atom types...</span>
476 463 <span class="i">$SpecifiedAtomTypes</span><span class="i">-&gt;AssignAtomTypes</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
477 464
478 465 <span class="c"># Make sure atom types assignment is successful...</span>
479 466 <span class="k">if</span> <span class="s">(</span>!<span class="i">$SpecifiedAtomTypes</span><span class="i">-&gt;IsAtomTypesAssignmentSuccessful</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
480 467 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
481 468 <span class="s">}</span>
482 469
483 470 <span class="c"># Assign atom identifiers at radius 0...</span>
484 471 <span class="i">$Radius</span> = <span class="n">0</span><span class="sc">;</span>
485 472 <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}}<span class="s">)</span> <span class="s">{</span>
486 473 <span class="i">$AtomID</span> = <span class="i">$Atom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
487 474
488 475 <span class="i">$AtomType</span> = <span class="i">$SpecifiedAtomTypes</span><span class="i">-&gt;GetAtomType</span><span class="s">(</span><span class="i">$Atom</span><span class="s">)</span><span class="sc">;</span>
489 476 <span class="i">$InitialAtomTypeString</span> = <span class="i">$AtomType</span> ? <span class="i">$AtomType</span> <span class="co">:</span> <span class="q">&#39;None&#39;</span><span class="sc">;</span>
490 477
491 478 <span class="i">$InitialAtomIdentifier</span> = <span class="i">TextUtil::HashCode</span><span class="s">(</span><span class="i">$InitialAtomTypeString</span><span class="s">)</span><span class="sc">;</span>
492 479 <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>} = <span class="i">$InitialAtomIdentifier</span><span class="sc">;</span>
493 480 <span class="s">}</span>
494 481
495 482 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
496 483 <span class="s">}</span>
497 484
498 485 <span class="c"># Initialize atom identifiers...</span>
499 486 <span class="c">#</span>
500 <a name="_InitializeAtomIdentifiers-"></a> 487 <span class="k">sub </span><span class="m">_InitializeAtomIdentifiers</span> <span class="s">{</span>
501 488 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
502 489 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$CurrentRadius</span><span class="s">)</span><span class="sc">;</span>
503 490
504 491 <span class="i">$Radius</span> = <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="sc">;</span>
505 492
506 493 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
507 494 <span class="k">for</span> <span class="i">$CurrentRadius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span>
508 495 <span class="c"># Atom idenfiers key and value correspond to AtomID and AtomIdentifier</span>
509 496 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
510 497
511 498 <span class="c"># Unique and strcuturally unique idenfiers key and value correspond to AtomIdentifier and AtomID</span>
512 499 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
513 500 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
514 501
515 502 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
516 503 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiersCount</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
517 504 <span class="s">}</span>
518 505
519 506 <span class="s">}</span>
520 507
521 508 <span class="c"># Collect atom neighborhoods upto specified neighborhood radius...</span>
522 509 <span class="c">#</span>
523 <a name="_GetAtomNeighborhoods-"></a> 510 <span class="k">sub </span><span class="m">_GetAtomNeighborhoods</span> <span class="s">{</span>
524 511 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
525 512 <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">$Radius</span><span class="cm">,</span> <span class="i">$CurrentRadius</span><span class="cm">,</span> <span class="i">$Molecule</span><span class="s">)</span><span class="sc">;</span>
526 513
527 514 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
528 515
529 516 <span class="i">$Radius</span> = <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="sc">;</span>
530 517 <span class="k">if</span> <span class="s">(</span><span class="i">$Radius</span> &lt; <span class="n">1</span><span class="s">)</span> <span class="s">{</span>
531 518 <span class="c"># At radius level 0, it&#39;s just the atoms...</span>
532 519 <span class="k">return</span><span class="sc">;</span>
533 520 <span class="s">}</span>
534 521
535 522 <span class="c"># Initialize neighborhood at different radii...</span>
536 523 <span class="k">for</span> <span class="i">$CurrentRadius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span>
537 524 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
538 525 <span class="s">}</span>
539 526
540 527 <span class="i">$Molecule</span> = <span class="i">$This</span><span class="i">-&gt;GetMolecule</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
541 528
542 529 <span class="c"># Collect available atom neighborhoods at different at different neighborhood level for each atom...</span>
543 530 <span class="k">my</span><span class="s">(</span><span class="i">$AtomsNeighborhoodWithSuccessorAtomsRef</span><span class="s">)</span><span class="sc">;</span>
544 531
545 532 <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}}<span class="s">)</span> <span class="s">{</span>
546 533 <span class="i">$AtomID</span> = <span class="i">$Atom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
547 534 <span class="i">$CurrentRadius</span> = <span class="n">0</span><span class="sc">;</span>
548 535 <span class="k">for</span> <span class="i">$AtomsNeighborhoodWithSuccessorAtomsRef</span> <span class="s">(</span><span class="i">$Molecule</span><span class="i">-&gt;GetAtomNeighborhoodsWithSuccessorAtomsAndRadiusUpto</span><span class="s">(</span><span class="i">$Atom</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
549 536 <span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$CurrentRadius</span>}{<span class="i">$AtomID</span>} = <span class="i">$AtomsNeighborhoodWithSuccessorAtomsRef</span><span class="sc">;</span>
550 537 <span class="i">$CurrentRadius</span>++<span class="sc">;</span>
551 538 <span class="s">}</span>
552 539 <span class="s">}</span>
553 540 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
554 541 <span class="s">}</span>
555 542
556 543 <span class="c"># Assign atom identifiers to central atom at each neighborhood radius level...</span>
557 544 <span class="c">#</span>
558 <a name="_AssignAtomIdentifiersToAtomNeighborhoods-"></a> 545 <span class="k">sub </span><span class="m">_AssignAtomIdentifiersToAtomNeighborhoods</span> <span class="s">{</span>
559 546 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
560 547 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$NextRadius</span><span class="cm">,</span> <span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$NeighborhoodAtom</span><span class="cm">,</span> <span class="i">$SuccessorAtom</span><span class="cm">,</span> <span class="i">$SuccessorAtomID</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomSuccessorAtomsRef</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span><span class="cm">,</span> <span class="i">$Bond</span><span class="cm">,</span> <span class="i">$BondOrder</span><span class="cm">,</span> <span class="i">$SuccessorAtomCount</span><span class="s">)</span><span class="sc">;</span>
561 548
562 549 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>} &lt; <span class="n">1</span><span class="s">)</span> <span class="s">{</span>
563 550 <span class="k">return</span><span class="sc">;</span>
564 551 <span class="s">}</span>
565 552
566 553 <span class="c"># Go over the atom neighborhoods at each radius upto specified radius and assign atom</span>
567 554 <span class="c"># indentifiers using their connected successor atoms and their identifiers.</span>
568 555 <span class="c">#</span>
569 556 <span class="c"># For a neighborhood atom at a specified radius, the successor connected atoms correpond</span>
570 557 <span class="c"># to next radius level and the last set of neighorhood atoms don&#39;t have any successor connected</span>
571 558 <span class="c"># atoms. Additionally, radius level 0 just correspond to initial atom identifiers.</span>
572 559 <span class="c">#</span>
573 560 <span class="c"># So in order to process atom neighborhood upto specified radius level, the last atom neighborhood</span>
574 561 <span class="c"># doesn&#39;t need to be processed: it gets processed at previous radius level as successor connected</span>
575 562 <span class="c"># atoms.</span>
576 563 <span class="c">#</span>
577 564 <span class="j">RADIUS:</span> <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>} - <span class="n">1</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
578 565 <span class="j">ATOM:</span> <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}}<span class="s">)</span> <span class="s">{</span>
579 566 <span class="i">$AtomID</span> = <span class="i">$Atom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
580 567
581 568 <span class="c"># Are there any available atom neighborhoods at this radius?</span>
582 569 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="s">)</span> <span class="s">{</span>
583 570 <span class="k">next</span> <span class="j">ATOM</span><span class="sc">;</span>
584 571 <span class="s">}</span>
585 572 <span class="i">$NextRadius</span> = <span class="i">$Radius</span> + <span class="n">1</span><span class="sc">;</span>
586 573
587 574 <span class="c"># Go over neighborhood atoms and their successor connected atoms at this radius and collect</span>
588 575 <span class="c"># (BondOrder AtomIdentifier) values for bonded atom pairs. Additionally, keep track of atom and bonds</span>
589 576 <span class="c"># for the neighorhoods to remove identifieres generated from structurally duplicate features.</span>
590 577 <span class="c">#</span>
591 578 <span class="k">my</span><span class="s">(</span><span class="i">%BondOrdersAndAtomIdentifiers</span><span class="s">)</span><span class="sc">;</span>
592 579
593 580 <span class="i">%BondOrdersAndAtomIdentifiers</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
594 581 <span class="i">$SuccessorAtomCount</span> = <span class="n">0</span><span class="sc">;</span>
595 582
596 583 <span class="j">NEIGHBORHOODS:</span> <span class="k">for</span> <span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}}<span class="s">)</span> <span class="s">{</span>
597 584 <span class="s">(</span><span class="i">$NeighborhoodAtom</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomSuccessorAtomsRef</span><span class="s">)</span> = <span class="i">@</span>{<span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span>}<span class="sc">;</span>
598 585
599 586 <span class="c"># Any connected successors for the NeighborhoodAtom?</span>
600 587 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$NeighborhoodAtomSuccessorAtomsRef</span>}<span class="s">)</span> <span class="s">{</span>
601 588 <span class="k">next</span> <span class="j">NEIGHBORHOODS</span><span class="sc">;</span>
602 589 <span class="s">}</span>
603 590 <span class="j">SUCCESSORATOM:</span> <span class="k">for</span> <span class="i">$SuccessorAtom</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$NeighborhoodAtomSuccessorAtomsRef</span>}<span class="s">)</span> <span class="s">{</span>
604 591 <span class="k">if</span> <span class="s">(</span><span class="i">$SuccessorAtom</span><span class="i">-&gt;IsHydrogen</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
605 592 <span class="c"># Skip successor hydrogen atom...</span>
606 593 <span class="k">next</span> <span class="j">SUCCESSORATOM</span><span class="sc">;</span>
607 594 <span class="s">}</span>
608 595 <span class="i">$SuccessorAtomID</span> = <span class="i">$SuccessorAtom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
609 596 <span class="i">$SuccessorAtomCount</span>++<span class="sc">;</span>
610 597
611 598 <span class="i">$Bond</span> = <span class="i">$NeighborhoodAtom</span><span class="i">-&gt;GetBondToAtom</span><span class="s">(</span><span class="i">$SuccessorAtom</span><span class="s">)</span><span class="sc">;</span>
612 599 <span class="i">$BondOrder</span> = <span class="i">$Bond</span><span class="i">-&gt;IsAromatic</span><span class="s">(</span><span class="s">)</span> ? <span class="q">&quot;1.5&quot;</span> <span class="co">:</span> <span class="i">$Bond</span><span class="i">-&gt;GetBondOrder</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
613 600
614 601 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$BondOrdersAndAtomIdentifiers</span>{<span class="i">$BondOrder</span>}<span class="s">)</span> <span class="s">{</span>
615 602 <span class="i">@</span>{<span class="i">$BondOrdersAndAtomIdentifiers</span>{<span class="i">$BondOrder</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
616 603 <span class="s">}</span>
617 604 <span class="k">push</span> <span class="i">@</span>{<span class="i">$BondOrdersAndAtomIdentifiers</span>{<span class="i">$BondOrder</span>}}<span class="cm">,</span> <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$SuccessorAtomID</span>}<span class="sc">;</span>
618 605 <span class="s">}</span>
619 606 <span class="s">}</span>
620 607 <span class="k">if</span> <span class="s">(</span>!<span class="i">$SuccessorAtomCount</span><span class="s">)</span> <span class="s">{</span>
621 608 <span class="k">next</span> <span class="j">ATOM</span><span class="sc">;</span>
622 609 <span class="s">}</span>
623 610 <span class="c"># Assign a new atom identifier at the NextRadius level...</span>
624 611 <span class="i">$This</span><span class="i">-&gt;_AssignAtomIdentifierToAtomNeighborhood</span><span class="s">(</span><span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="cm">,</span> \<span class="i">%BondOrdersAndAtomIdentifiers</span><span class="s">)</span><span class="sc">;</span>
625 612 <span class="s">}</span>
626 613 <span class="s">}</span>
627 614 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
628 615 <span class="s">}</span>
629 616
630 617 <span class="c"># Generate and assign atom indentifier for AtomID using atom neighborhood at next radius level...</span>
631 618 <span class="c">#</span>
632 <a name="_AssignAtomIdentifierToAtomNeighborhood-"></a> 619 <span class="k">sub </span><span class="m">_AssignAtomIdentifierToAtomNeighborhood</span> <span class="s">{</span>
633 620 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="cm">,</span> <span class="i">$BondOrdersAndAtomIdentifiersRef</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
634 621 <span class="k">my</span><span class="s">(</span><span class="i">$NextRadius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$SuccessorAtomIdentifier</span><span class="cm">,</span> <span class="i">$BondOrder</span><span class="cm">,</span> <span class="i">$AtomIdentifierString</span><span class="cm">,</span> <span class="i">@AtomIndentifiersInfo</span><span class="s">)</span><span class="sc">;</span>
635 622
636 623 <span class="i">$NextRadius</span> = <span class="i">$Radius</span> + <span class="n">1</span><span class="sc">;</span>
637 624
638 625 <span class="i">@AtomIndentifiersInfo</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
639 626
640 627 <span class="i">$AtomIdentifier</span> = <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="sc">;</span>
641 628 <span class="k">push</span> <span class="i">@AtomIndentifiersInfo</span><span class="cm">,</span> <span class="s">(</span><span class="i">$NextRadius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
642 629
643 630 <span class="c"># Sort out successor atom bond order and identifier pairs by bond order followed by atom identifiers</span>
644 631 <span class="c"># in order to make the final atom identifier graph invariant...</span>
645 632 <span class="c">#</span>
646 633 <span class="k">for</span> <span class="i">$BondOrder</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$BondOrdersAndAtomIdentifiersRef</span>}<span class="s">)</span> <span class="s">{</span>
647 634 <span class="k">for</span> <span class="i">$SuccessorAtomIdentifier</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="i">@</span>{<span class="i">$BondOrdersAndAtomIdentifiersRef</span>-&gt;{<span class="i">$BondOrder</span>}}<span class="s">)</span> <span class="s">{</span>
648 635 <span class="k">push</span> <span class="i">@AtomIndentifiersInfo</span><span class="cm">,</span> <span class="s">(</span><span class="i">$BondOrder</span><span class="cm">,</span> <span class="i">$SuccessorAtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
649 636 <span class="s">}</span>
650 637 <span class="s">}</span>
651 638 <span class="i">$AtomIdentifierString</span> = <span class="k">join</span><span class="s">(</span><span class="q">&quot;&quot;</span><span class="cm">,</span> <span class="i">@AtomIndentifiersInfo</span><span class="s">)</span><span class="sc">;</span>
652 639 <span class="i">$AtomIdentifier</span> = <span class="i">TextUtil::HashCode</span><span class="s">(</span><span class="i">$AtomIdentifierString</span><span class="s">)</span><span class="sc">;</span>
653 640
654 641 <span class="c"># Assign atom identifier to the atom at next radius level...</span>
655 642 <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$NextRadius</span>}{<span class="i">$AtomID</span>} = <span class="i">$AtomIdentifier</span><span class="sc">;</span>
656 643
657 644 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
658 645 <span class="s">}</span>
659 646
660 647 <span class="c"># Remove duplicates atom identifiers...</span>
661 648 <span class="c">#</span>
662 <a name="_RemoveDuplicateAtomIdentifiers-"></a> 649 <span class="k">sub </span><span class="m">_RemoveDuplicateAtomIdentifiers</span> <span class="s">{</span>
663 650 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
664 651
665 652 <span class="i">$This</span><span class="i">-&gt;_RemoveDuplicateIdentifiersByValue</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
666 653 <span class="i">$This</span><span class="i">-&gt;_RemoveStructurallyDuplicateIdenfiers</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
667 654
668 655 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
669 656 <span class="s">}</span>
670 657
671 658 <span class="c"># Remove duplicate identifiers at each radius level by just using their value...</span>
672 659 <span class="c">#</span>
673 <a name="_RemoveDuplicateIdentifiersByValue-"></a> 660 <span class="k">sub </span><span class="m">_RemoveDuplicateIdentifiersByValue</span> <span class="s">{</span>
674 661 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
675 662 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
676 663
677 664 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
678 665 <span class="j">ATOM:</span> <span class="k">for</span> <span class="i">$Atom</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}}<span class="s">)</span> <span class="s">{</span>
679 666 <span class="i">$AtomID</span> = <span class="i">$Atom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
680 667 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="s">)</span> <span class="s">{</span>
681 668 <span class="k">next</span> <span class="j">ATOM</span><span class="sc">;</span>
682 669 <span class="s">}</span>
683 670 <span class="i">$AtomIdentifier</span> = <span class="i">$This</span>-&gt;{<span class="w">AtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="sc">;</span>
684 671 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="s">)</span> <span class="s">{</span>
685 672 <span class="c"># It&#39;s a duplicate atom idenfier at this radius level...</span>
686 673 <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>} += <span class="n">1</span><span class="sc">;</span>
687 674 <span class="k">next</span> <span class="j">ATOM</span><span class="sc">;</span>
688 675 <span class="s">}</span>
689 676 <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>} = <span class="i">$AtomID</span><span class="sc">;</span>
690 677 <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>} = <span class="n">1</span><span class="sc">;</span>
691 678 <span class="s">}</span>
692 679 <span class="s">}</span>
693 680 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
694 681 <span class="s">}</span>
695 682
696 683 <span class="c"># Remove structurally duplicate identifiers at each radius level...</span>
697 684 <span class="c">#</span>
698 685 <span class="c"># Methodology:</span>
699 686 <span class="c"># . For unquie atom identifiers at each radius level, assign complete structure features</span>
700 687 <span class="c"># in terms all the bonds involved to generate that identifier</span>
701 688 <span class="c"># . Use the complete structure features to remover atom identifiers which are</span>
702 689 <span class="c"># structurally equivalent which can also be at earlier radii levels</span>
703 690 <span class="c">#</span>
704 691 <span class="c">#</span>
705 <a name="_RemoveStructurallyDuplicateIdenfiers-"></a> 692 <span class="k">sub </span><span class="m">_RemoveStructurallyDuplicateIdenfiers</span> <span class="s">{</span>
706 693 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
707 694 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$SimilarAtomIdentifierRadius</span><span class="cm">,</span> <span class="i">$SimilarAtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
708 695
709 696 <span class="c"># Setup structure features...</span>
710 697 <span class="i">$This</span><span class="i">-&gt;_SetupStructureFeaturesForAtomIDsInvolvedInUniqueIdentifiers</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
711 698
712 699 <span class="c"># Identify structurally unqiue identifiers...</span>
713 700 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
714 701 <span class="j">ATOMIDENTIFIER:</span> <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
715 702 <span class="i">$AtomID</span> = <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
716 703
717 704 <span class="s">(</span><span class="i">$SimilarAtomIdentifierRadius</span><span class="cm">,</span> <span class="i">$SimilarAtomIdentifier</span><span class="s">)</span> = <span class="i">$This</span><span class="i">-&gt;_FindStructurallySimilarAtomIdentifier</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
718 705 <span class="k">if</span> <span class="s">(</span><span class="i">$SimilarAtomIdentifier</span><span class="s">)</span> <span class="s">{</span>
719 706 <span class="c"># Current atom identifier is similar to an earlier structurally unique atom identifier...</span>
720 707 <span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiersCount</span>}{<span class="i">$SimilarAtomIdentifierRadius</span>}{<span class="i">$SimilarAtomIdentifier</span>} += <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
721 708 <span class="k">next</span> <span class="j">ATOMIDENTIFIER</span><span class="sc">;</span>
722 709 <span class="s">}</span>
723 710 <span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>} = <span class="i">$AtomID</span><span class="sc">;</span>
724 711
725 712 <span class="c"># Set structurally unique atom identifier count to the unique atom identifiers count...</span>
726 713 <span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>} = <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
727 714 <span class="s">}</span>
728 715 <span class="s">}</span>
729 716 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
730 717 <span class="s">}</span>
731 718
732 719 <span class="c"># Set final fingerpritns vector...</span>
733 720 <span class="c">#</span>
734 <a name="_SetFinalFingerprints-"></a> 721 <span class="k">sub </span><span class="m">_SetFinalFingerprints</span> <span class="s">{</span>
735 722 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
736 723
737 724 <span class="c"># Mark successful generation of fingerprints...</span>
738 725 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsGenerated</span>} = <span class="n">1</span><span class="sc">;</span>
739 726
740 727 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivity$/i</span><span class="s">)</span> <span class="s">{</span>
741 728 <span class="i">$This</span><span class="i">-&gt;_SetFinalExtendedConnectivityFingerprints</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
742 729 <span class="s">}</span>
743 730 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivityCount$/i</span><span class="s">)</span> <span class="s">{</span>
744 731 <span class="i">$This</span><span class="i">-&gt;_SetFinalExtendedConnectivityCountFingerprints</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
745 732 <span class="s">}</span>
746 733 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivityBits$/i</span><span class="s">)</span> <span class="s">{</span>
747 734 <span class="i">$This</span><span class="i">-&gt;_SetFinalExtendedConnectivityBitsFingerprints</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
748 735 <span class="s">}</span>
749 736
750 737 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
751 738 <span class="s">}</span>
752 739
753 740 <span class="c"># Set final extended connectivity fingerpritns vector...</span>
754 741 <span class="c">#</span>
755 <a name="_SetFinalExtendedConnectivityFingerprints-"></a> 742 <span class="k">sub </span><span class="m">_SetFinalExtendedConnectivityFingerprints</span> <span class="s">{</span>
756 743 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
757 744 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">@AtomIdentifiers</span><span class="s">)</span><span class="sc">;</span>
758 745
759 746 <span class="i">@AtomIdentifiers</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
760 747
761 748 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
762 749 <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
763 750 <span class="k">push</span> <span class="i">@AtomIdentifiers</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="sc">;</span>
764 751 <span class="s">}</span>
765 752 <span class="s">}</span>
766 753 <span class="c"># Add atom identifiers to fingerprint vector...</span>
767 754 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVector</span>}<span class="i">-&gt;AddValues</span><span class="s">(</span>\<span class="i">@AtomIdentifiers</span><span class="s">)</span><span class="sc">;</span>
768 755
769 756 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
770 757 <span class="s">}</span>
771 758
772 759 <span class="c"># Set final extended connectivity count fingerpritns vector...</span>
773 760 <span class="c">#</span>
774 <a name="_SetFinalExtendedConnectivityCountFingerprints-"></a> 761 <span class="k">sub </span><span class="m">_SetFinalExtendedConnectivityCountFingerprints</span> <span class="s">{</span>
775 762 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
776 763 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$AtomIdentifierCount</span><span class="cm">,</span> <span class="i">@AtomIdentifiers</span><span class="cm">,</span> <span class="i">@AtomIdentifiersCount</span><span class="s">)</span><span class="sc">;</span>
777 764
778 765 <span class="i">@AtomIdentifiers</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> <span class="i">@AtomIdentifiersCount</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
779 766
780 767 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
781 768 <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
782 769 <span class="i">$AtomIdentifierCount</span> = <span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiersCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
783 770 <span class="k">push</span> <span class="i">@AtomIdentifiers</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="sc">;</span>
784 771 <span class="k">push</span> <span class="i">@AtomIdentifiersCount</span><span class="cm">,</span> <span class="i">$AtomIdentifierCount</span><span class="sc">;</span>
785 772 <span class="s">}</span>
786 773 <span class="s">}</span>
787 774 <span class="c"># Add atom identifiers to fingerprint vector as value IDs...</span>
788 775 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVector</span>}<span class="i">-&gt;AddValueIDs</span><span class="s">(</span>\<span class="i">@AtomIdentifiers</span><span class="s">)</span><span class="sc">;</span>
789 776
790 777 <span class="c"># Add atom identifiers to count to fingerprint vector as values...</span>
791 778 <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVector</span>}<span class="i">-&gt;AddValues</span><span class="s">(</span>\<span class="i">@AtomIdentifiersCount</span><span class="s">)</span><span class="sc">;</span>
792 779
793 780 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
794 781 <span class="s">}</span>
795 782
796 783 <span class="c"># Set final extended connectivity bits fingerpritns vector...</span>
797 784 <span class="c">#</span>
798 <a name="_SetFinalExtendedConnectivityBitsFingerprints-"></a> 785 <span class="k">sub </span><span class="m">_SetFinalExtendedConnectivityBitsFingerprints</span> <span class="s">{</span>
799 786 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
800 787 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$FingerprintsBitVector</span><span class="cm">,</span> <span class="i">$Size</span><span class="cm">,</span> <span class="i">$SkipBitPosCheck</span><span class="cm">,</span> <span class="i">$AtomIdentifierBitPos</span><span class="cm">,</span> <span class="i">$SetBitNum</span><span class="s">)</span><span class="sc">;</span>
801 788
802 789 <span class="i">$FingerprintsBitVector</span> = <span class="i">$This</span>-&gt;{<span class="w">FingerprintsBitVector</span>}<span class="sc">;</span>
803 790
804 791 <span class="i">$Size</span> = <span class="i">$This</span>-&gt;{<span class="w">Size</span>}<span class="sc">;</span>
805 792
806 793 <span class="i">$SkipBitPosCheck</span> = <span class="n">1</span><span class="sc">;</span>
807 794
808 795 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
809 796 <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
810 797 <span class="c"># Set random number seed...</span>
811 798 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">UsePerlCoreRandom</span>}<span class="s">)</span> <span class="s">{</span>
812 799 <span class="i">CORE::</span><span class="k">srand</span><span class="s">(</span><span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
813 800 <span class="s">}</span>
814 801 <span class="k">else</span> <span class="s">{</span>
815 802 <span class="i">MathUtil::srandom</span><span class="s">(</span><span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
816 803 <span class="s">}</span>
817 804
818 805 <span class="c"># Set bit position...</span>
819 806 <span class="i">$AtomIdentifierBitPos</span> = <span class="i">$This</span>-&gt;{<span class="w">UsePerlCoreRandom</span>} ? <span class="k">int</span><span class="s">(</span><span class="i">CORE::</span><span class="k">rand</span><span class="s">(</span><span class="i">$Size</span><span class="s">)</span><span class="s">)</span> <span class="co">:</span> <span class="k">int</span><span class="s">(</span><span class="i">MathUtil::random</span><span class="s">(</span><span class="i">$Size</span><span class="s">)</span><span class="s">)</span><span class="sc">;</span>
820 807 <span class="i">$FingerprintsBitVector</span><span class="i">-&gt;SetBit</span><span class="s">(</span><span class="i">$AtomIdentifierBitPos</span><span class="cm">,</span> <span class="i">$SkipBitPosCheck</span><span class="s">)</span><span class="sc">;</span>
821 808 <span class="s">}</span>
822 809 <span class="s">}</span>
823 810 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
824 811 <span class="s">}</span>
825 812
826 813
827 814 <span class="c"># Identify structurally unique identifiers by comparing structure features involved in</span>
828 815 <span class="c"># generating identifiear by comparing it agains all the previous structurally unique</span>
829 816 <span class="c"># identifiers...</span>
830 817 <span class="c">#</span>
831 <a name="_FindStructurallySimilarAtomIdentifier-"></a> 818 <span class="k">sub </span><span class="m">_FindStructurallySimilarAtomIdentifier</span> <span class="s">{</span>
832 819 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$SpecifiedRadius</span><span class="cm">,</span> <span class="i">$SpecifiedAtomID</span><span class="cm">,</span> <span class="i">$SpecifiedAtomIdentifier</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
833 820 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$FeatureAtomCount</span><span class="cm">,</span> <span class="i">$FeatureAtomIDsRef</span><span class="cm">,</span> <span class="i">$SpecifiedFeatureAtomID</span><span class="cm">,</span> <span class="i">$SpecifiedFeatureAtomCount</span><span class="cm">,</span> <span class="i">$SpecifiedFeatureAtomIDsRef</span><span class="s">)</span><span class="sc">;</span>
834 821
835 822 <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedRadius</span> == <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
836 823 <span class="c"># After duplicate removal by value, all identifier at radius level 0 would be structurally unique...</span>
837 824 <span class="k">return</span> <span class="s">(</span><span class="k">undef</span><span class="cm">,</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span>
838 825 <span class="s">}</span>
839 826
840 827 <span class="i">$SpecifiedFeatureAtomCount</span> = <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}{<span class="i">$SpecifiedRadius</span>}{<span class="i">$SpecifiedAtomID</span>}<span class="sc">;</span>
841 828 <span class="i">$SpecifiedFeatureAtomIDsRef</span> = <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}{<span class="i">$SpecifiedRadius</span>}{<span class="i">$SpecifiedAtomID</span>}<span class="sc">;</span>
842 829
843 830 <span class="c"># No need to compare features at radius 0...</span>
844 831 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">1</span> .. <span class="i">$SpecifiedRadius</span><span class="s">)</span> <span class="s">{</span>
845 832 <span class="j">ATOMIDENTIFIER:</span> <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
846 833 <span class="i">$AtomID</span> = <span class="i">$This</span>-&gt;{<span class="w">StructurallyUniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
847 834
848 835 <span class="i">$FeatureAtomCount</span> = <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="sc">;</span>
849 836 <span class="i">$FeatureAtomIDsRef</span> = <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="sc">;</span>
850 837
851 838 <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedFeatureAtomCount</span> != <span class="i">$FeatureAtomCount</span><span class="s">)</span> <span class="s">{</span>
852 839 <span class="c"># Couldn&#39;t be structurally equivalent...</span>
853 840 <span class="k">next</span> <span class="j">ATOMIDENTIFIER</span><span class="sc">;</span>
854 841 <span class="s">}</span>
855 842 <span class="k">for</span> <span class="i">$SpecifiedFeatureAtomID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span> {<span class="i">$SpecifiedFeatureAtomIDsRef</span>}<span class="s">)</span> <span class="s">{</span>
856 843 <span class="k">if</span> <span class="s">(</span>! <span class="k">exists</span> <span class="i">$FeatureAtomIDsRef</span>-&gt;{<span class="i">$SpecifiedFeatureAtomID</span>}<span class="s">)</span> <span class="s">{</span>
857 844 <span class="c"># For structural equivalency, all atom in specified feature must also be present in a previously</span>
858 845 <span class="c"># identified structurally unique structure feature...</span>
859 846 <span class="k">next</span> <span class="j">ATOMIDENTIFIER</span><span class="sc">;</span>
860 847 <span class="s">}</span>
861 848 <span class="s">}</span>
862 849 <span class="c"># Found structurally equivalent feature...</span>
863 850 <span class="k">return</span> <span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="s">)</span><span class="sc">;</span>
864 851 <span class="s">}</span>
865 852 <span class="s">}</span>
866 853 <span class="k">return</span> <span class="s">(</span><span class="k">undef</span><span class="cm">,</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span>
867 854 <span class="s">}</span>
868 855
869 856 <span class="c"># Setup structure features for atom IDs involved in unique atom identifiers at all</span>
870 857 <span class="c"># radii level...</span>
871 858 <span class="c">#</span>
872 <a name="_SetupStructureFeaturesForAtomIDsInvolvedInUniqueIdentifiers-"></a> 859 <span class="k">sub </span><span class="m">_SetupStructureFeaturesForAtomIDsInvolvedInUniqueIdentifiers</span> <span class="s">{</span>
873 860 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
874 861 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$PreviousRadius</span><span class="cm">,</span> <span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="cm">,</span> <span class="i">$AtomIdentifier</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomID</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span><span class="cm">,</span> <span class="i">$NeighborhoodAtom</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomSuccessorAtomsRef</span><span class="cm">,</span> <span class="i">%AtomIDs</span><span class="s">)</span><span class="sc">;</span>
875 862
876 863 <span class="i">$This</span><span class="i">-&gt;_InitializeStructureFeatures</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
877 864
878 865 <span class="c"># Collect atom IDs involved in unique atom identifiers...</span>
879 866 <span class="i">%AtomIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
880 867 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
881 868 <span class="k">for</span> <span class="i">$AtomIdentifier</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}}<span class="s">)</span> <span class="s">{</span>
882 869 <span class="i">$AtomID</span> = <span class="i">$This</span>-&gt;{<span class="w">UniqueAtomIdentifiers</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomIdentifier</span>}<span class="sc">;</span>
883 870 <span class="i">$AtomIDs</span>{<span class="i">$AtomID</span>} = <span class="i">$AtomID</span><span class="sc">;</span>
884 871 <span class="s">}</span>
885 872 <span class="s">}</span>
886 873
887 874 <span class="c"># Setup structure features...</span>
888 875 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="s">)</span> <span class="s">{</span>
889 876 <span class="k">for</span> <span class="i">$AtomID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%AtomIDs</span><span class="s">)</span> <span class="s">{</span>
890 877 <span class="k">my</span><span class="s">(</span><span class="i">$StructureFeatureAtomCount</span><span class="cm">,</span> <span class="i">%StructureFeatureAtomIDs</span><span class="s">)</span><span class="sc">;</span>
891 878
892 879 <span class="i">$StructureFeatureAtomCount</span> = <span class="n">0</span><span class="sc">;</span>
893 880 <span class="i">%StructureFeatureAtomIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
894 881
895 882 <span class="c"># Get partial structure features for the atom at previous radius level...</span>
896 883 <span class="i">$PreviousRadius</span> = <span class="i">$Radius</span> - <span class="n">1</span><span class="sc">;</span>
897 884 <span class="k">if</span> <span class="s">(</span><span class="i">$PreviousRadius</span> &gt;= <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
898 885 <span class="i">$StructureFeatureAtomCount</span> += <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}{<span class="i">$PreviousRadius</span>}{<span class="i">$AtomID</span>}<span class="sc">;</span>
899 886 <span class="i">%StructureFeatureAtomIDs</span> = <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}{<span class="i">$PreviousRadius</span>}{<span class="i">$AtomID</span>}}<span class="sc">;</span>
900 887 <span class="s">}</span>
901 888
902 889 <span class="c"># Get all neighborhood atom at this radius level...</span>
903 890 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$Radius</span>}<span class="s">)</span> &amp;&amp; <span class="k">exists</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}<span class="s">)</span><span class="s">)</span> <span class="s">{</span>
904 891 <span class="j">NEIGHBORHOODS:</span> <span class="k">for</span> <span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomNeighborhoods</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>}}<span class="s">)</span> <span class="s">{</span>
905 892 <span class="s">(</span><span class="i">$NeighborhoodAtom</span><span class="cm">,</span> <span class="i">$NeighborhoodAtomSuccessorAtomsRef</span><span class="s">)</span> = <span class="i">@</span>{<span class="i">$NeighborhoodAtomsWithSuccessorAtomsRef</span>}<span class="sc">;</span>
906 893 <span class="k">if</span> <span class="s">(</span><span class="i">$NeighborhoodAtom</span><span class="i">-&gt;IsHydrogen</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
907 894 <span class="k">next</span> <span class="j">NEIGHBORHOODS</span><span class="sc">;</span>
908 895 <span class="s">}</span>
909 896 <span class="i">$NeighborhoodAtomID</span> = <span class="i">$NeighborhoodAtom</span><span class="i">-&gt;GetID</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
910 897 <span class="i">$StructureFeatureAtomCount</span>++<span class="sc">;</span>
911 898 <span class="i">$StructureFeatureAtomIDs</span>{<span class="i">$NeighborhoodAtomID</span>} = <span class="i">$NeighborhoodAtomID</span><span class="sc">;</span>
912 899 <span class="s">}</span>
913 900 <span class="s">}</span>
914 901
915 902 <span class="c"># Assign structure features to atom at this radius level...</span>
916 903 <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>} = <span class="i">$StructureFeatureAtomCount</span><span class="sc">;</span>
917 904 <span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}{<span class="i">$Radius</span>}{<span class="i">$AtomID</span>} = \<span class="i">%StructureFeatureAtomIDs</span><span class="sc">;</span>
918 905 <span class="s">}</span>
919 906 <span class="s">}</span>
920 907 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
921 908 <span class="s">}</span>
922 909
923 910 <span class="c"># Intialize structure features at each radius level...</span>
924 911 <span class="c">#</span>
925 <a name="_InitializeStructureFeatures-"></a> 912 <span class="k">sub </span><span class="m">_InitializeStructureFeatures</span> <span class="s">{</span>
926 913 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
927 914 <span class="k">my</span><span class="s">(</span><span class="i">$Radius</span><span class="cm">,</span> <span class="i">$CurrentRadius</span><span class="cm">,</span> <span class="i">$Atom</span><span class="cm">,</span> <span class="i">$AtomID</span><span class="s">)</span><span class="sc">;</span>
928 915
929 916 <span class="c"># Initialize all structure features...</span>
930 917
931 918 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
932 919 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
933 920 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
934 921
935 922 <span class="i">$Radius</span> = <span class="i">$This</span>-&gt;{<span class="w">NeighborhoodRadius</span>}<span class="sc">;</span>
936 923 <span class="k">for</span> <span class="i">$CurrentRadius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span>
937 924 <span class="c"># Structure features for at specific radii accessed using atom IDs...</span>
938 925 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomCount</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
939 926 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">StructureFeatures</span>}{<span class="w">AtomIDs</span>}{<span class="i">$CurrentRadius</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
940 927 <span class="s">}</span>
941 928 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
942 929 <span class="s">}</span>
943 930
944 931 <span class="c"># Cache appropriate molecule data...</span>
945 932 <span class="c">#</span>
946 <a name="_SetupMoleculeDataCache-"></a> 933 <span class="k">sub </span><span class="m">_SetupMoleculeDataCache</span> <span class="s">{</span>
947 934 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
948 935
949 936 <span class="c"># Get all non-hydrogen atoms...</span>
950 937 <span class="k">my</span><span class="s">(</span><span class="i">$NegateAtomCheckMethod</span><span class="s">)</span><span class="sc">;</span>
951 938 <span class="i">$NegateAtomCheckMethod</span> = <span class="n">1</span><span class="sc">;</span>
952 939 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}} = <span class="i">$This</span><span class="i">-&gt;GetMolecule</span><span class="s">(</span><span class="s">)</span><span class="i">-&gt;GetAtoms</span><span class="s">(</span><span class="q">&quot;IsHydrogen&quot;</span><span class="cm">,</span> <span class="i">$NegateAtomCheckMethod</span><span class="s">)</span><span class="sc">;</span>
953 940
954 941 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
955 942 <span class="s">}</span>
956 943
957 944 <span class="c"># Clear cached molecule data...</span>
958 945 <span class="c">#</span>
959 <a name="_ClearMoleculeDataCache-"></a> 946 <span class="k">sub </span><span class="m">_ClearMoleculeDataCache</span> <span class="s">{</span>
960 947 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
961 948
962 949 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Atoms</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
963 950
964 951 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
965 952 <span class="s">}</span>
966 953
967 954 <span class="c"># Initialize atom indentifier type information...</span>
968 955 <span class="c">#</span>
969 956 <span class="c"># Current supported values:</span>
970 957 <span class="c">#</span>
971 958 <span class="c"># AtomicInvariantsAtomTypes, FunctionalClassAtomTypes, DREIDINGAtomTypes, EStateAtomTypes,</span>
972 959 <span class="c"># MMFF94AtomTypes, SLogPAtomTypes, SYBYLAtomTypes, TPSAAtomTypes, UFFAtomTypes</span>
973 960 <span class="c">#</span>
974 <a name="_InitializeAtomIdentifierTypeInformation-"></a> 961 <span class="k">sub </span><span class="m">_InitializeAtomIdentifierTypeInformation</span> <span class="s">{</span>
975 962 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
976 963
977 964 <span class="j">IDENTIFIERTYPE:</span> <span class="s">{</span>
978 965 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^AtomicInvariantsAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
979 966 <span class="i">$This</span><span class="i">-&gt;_InitializeAtomicInvariantsAtomTypesInformation</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
980 967 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
981 968 <span class="s">}</span>
982 969 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^FunctionalClassAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
983 970 <span class="i">$This</span><span class="i">-&gt;_InitializeFunctionalClassAtomTypesInformation</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
984 971 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
985 972 <span class="s">}</span>
986 973 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^(DREIDINGAtomTypes|EStateAtomTypes|MMFF94AtomTypes|SLogPAtomTypes|SYBYLAtomTypes|TPSAAtomTypes|UFFAtomTypes)$/i</span><span class="s">)</span> <span class="s">{</span>
987 974 <span class="c"># Nothing to do for now...</span>
988 975 <span class="k">last</span> <span class="j">IDENTIFIERTYPE</span><span class="sc">;</span>
989 976 <span class="s">}</span>
990 977 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_InitializeAtomIdentifierTypeInformation: Unknown atom indentifier type $This-&gt;{AtomIdentifierType}...&quot;</span><span class="sc">;</span>
991 978 <span class="s">}</span>
992 979 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
993 980 <span class="s">}</span>
994 981
995 982 <span class="c"># Initialize atomic invariants atom types, generated by AtomTypes::AtomicInvariantsAtomTypes</span>
996 983 <span class="c"># class, to use for generating initial atom identifiers...</span>
997 984 <span class="c">#</span>
998 985 <span class="c"># Let:</span>
999 986 <span class="c"># AS = Atom symbol corresponding to element symbol</span>
1000 987 <span class="c">#</span>
1001 988 <span class="c"># X&lt;n&gt; = Number of non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1002 989 <span class="c"># BO&lt;n&gt; = Sum of bond orders to non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1003 990 <span class="c"># LBO&lt;n&gt; = Largest bond order of non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1004 991 <span class="c"># SB&lt;n&gt; = Number of single bonds to non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1005 992 <span class="c"># DB&lt;n&gt; = Number of double bonds to non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1006 993 <span class="c"># TB&lt;n&gt; = Number of triple bonds to non-hydrogen atom neighbors or heavy atoms attached to atom</span>
1007 994 <span class="c"># H&lt;n&gt; = Number of implicit and explicit hydrogens for atom</span>
1008 995 <span class="c"># Ar = Aromatic annotation indicating whether atom is aromatic</span>
1009 996 <span class="c"># RA = Ring atom annotation indicating whether atom is a ring</span>
1010 997 <span class="c"># FC&lt;+n/-n&gt; = Formal charge assigned to atom</span>
1011 998 <span class="c"># MN&lt;n&gt; = Mass number indicating isotope other than most abundant isotope</span>
1012 999 <span class="c"># SM&lt;n&gt; = Spin multiplicity of atom. Possible values: 1 (singlet), 2 (doublet) or 3 (triplet)</span>
1013 1000 <span class="c">#</span>
1014 1001 <span class="c"># Then:</span>
1015 1002 <span class="c">#</span>
1016 1003 <span class="c"># Atom type generated by AtomTypes::AtomicInvariantsAtomTypes class corresponds to:</span>
1017 1004 <span class="c">#</span>
1018 1005 <span class="c"># AS.X&lt;n&gt;.BO&lt;n&gt;.LBO&lt;n&gt;.&lt;SB&gt;&lt;n&gt;.&lt;DB&gt;&lt;n&gt;.&lt;TB&gt;&lt;n&gt;.H&lt;n&gt;.Ar.RA.FC&lt;+n/-n&gt;.MN&lt;n&gt;.SM&lt;n&gt;</span>
1019 1006 <span class="c">#</span>
1020 1007 <span class="c"># Except for AS which is a required atomic invariant in atom types, all other atomic invariants are</span>
1021 1008 <span class="c"># optional.</span>
1022 1009 <span class="c">#</span>
1023 1010 <span class="c"># Default atomic invariants used for generating inital atom identifiers are [ Ref 24 ]:</span>
1024 1011 <span class="c">#</span>
1025 1012 <span class="c"># AS, X&lt;n&gt;, BO&lt;n&gt;, H&lt;n&gt;, FC&lt;+n/-n&gt;, MN&lt;n&gt;</span>
1026 1013 <span class="c">#</span>
1027 1014 <span class="c"># In addition to usage of abbreviations for specifying atomic invariants, the following descriptive words</span>
1028 1015 <span class="c"># are also allowed:</span>
1029 1016 <span class="c">#</span>
1030 1017 <span class="c"># X : NumOfNonHydrogenAtomNeighbors or NumOfHeavyAtomNeighbors</span>
1031 1018 <span class="c"># BO : SumOfBondOrdersToNonHydrogenAtoms or SumOfBondOrdersToHeavyAtoms</span>
1032 1019 <span class="c"># LBO : LargestBondOrderToNonHydrogenAtoms or LargestBondOrderToHeavyAtoms</span>
1033 1020 <span class="c"># SB : NumOfSingleBondsToNonHydrogenAtoms or NumOfSingleBondsToHeavyAtoms</span>
1034 1021 <span class="c"># DB : NumOfDoubleBondsToNonHydrogenAtoms or NumOfDoubleBondsToHeavyAtoms</span>
1035 1022 <span class="c"># TB : NumOfTripleBondsToNonHydrogenAtoms or NumOfTripleBondsToHeavyAtoms</span>
1036 1023 <span class="c"># H : NumOfImplicitAndExplicitHydrogens</span>
1037 1024 <span class="c"># Ar : Aromatic</span>
1038 1025 <span class="c"># RA : RingAtom</span>
1039 1026 <span class="c"># FC : FormalCharge</span>
1040 1027 <span class="c"># MN : MassNumber</span>
1041 1028 <span class="c"># SM : SpinMultiplicity</span>
1042 1029 <span class="c">#</span>
1043 <a name="_InitializeAtomicInvariantsAtomTypesInformation-"></a>1030 <span class="k">sub </span><span class="m">_InitializeAtomicInvariantsAtomTypesInformation</span> <span class="s">{</span>
1044 1031 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
1045 1032
1046 1033 <span class="c"># Default atomic invariants to use for generating initial atom identifiers are: AS, X, BO, LBO, H, FC</span>
1047 1034 <span class="c">#</span>
1048 1035 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1049 1036 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}} = <span class="s">(</span><span class="q">&#39;AS&#39;</span><span class="cm">,</span> <span class="q">&#39;X&#39;</span><span class="cm">,</span> <span class="q">&#39;BO&#39;</span><span class="cm">,</span> <span class="q">&#39;H&#39;</span><span class="cm">,</span> <span class="q">&#39;FC&#39;</span><span class="cm">,</span> <span class="q">&#39;MN&#39;</span><span class="s">)</span><span class="sc">;</span>
1050 1037
1051 1038 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
1052 1039 <span class="s">}</span>
1053 1040
1054 1041 <span class="c"># Initialize functional class atom types, generated by AtomTypes::FunctionalClassAtomTypes</span>
1055 1042 <span class="c"># class, to use for generating initial atom identifiers...</span>
1056 1043 <span class="c">#</span>
1057 1044 <span class="c"># Let:</span>
1058 1045 <span class="c"># HBD: HydrogenBondDonor</span>
1059 1046 <span class="c"># HBA: HydrogenBondAcceptor</span>
1060 1047 <span class="c"># PI : PositivelyIonizable</span>
1061 1048 <span class="c"># NI : NegativelyIonizable</span>
1062 1049 <span class="c"># Ar : Aromatic</span>
1063 1050 <span class="c"># Hal : Halogen</span>
1064 1051 <span class="c"># H : Hydrophobic</span>
1065 1052 <span class="c"># RA : RingAtom</span>
1066 1053 <span class="c"># CA : ChainAtom</span>
1067 1054 <span class="c">#</span>
1068 1055 <span class="c"># Then:</span>
1069 1056 <span class="c">#</span>
1070 1057 <span class="c"># Functiononal class atom type specification for an atom corresponds to:</span>
1071 1058 <span class="c">#</span>
1072 1059 <span class="c"># Ar.CA.H.HBA.HBD.Hal.NI.PI.RA</span>
1073 1060 <span class="c">#</span>
1074 1061 <span class="c"># Default functional classes used are: HBD, HBA, PI, NI, Ar, Hal</span>
1075 1062 <span class="c">#</span>
1076 1063 <span class="c"># FunctionalAtomTypes are assigned using the following definitions [ Ref 60-61, Ref 65-66 ]:</span>
1077 1064 <span class="c">#</span>
1078 1065 <span class="c"># HydrogenBondDonor: NH, NH2, OH</span>
1079 1066 <span class="c"># HydrogenBondAcceptor: N[!H], O</span>
1080 1067 <span class="c"># PositivelyIonizable: +, NH2</span>
1081 1068 <span class="c"># NegativelyIonizable: -, C(=O)OH, S(=O)OH, P(=O)OH</span>
1082 1069 <span class="c">#</span>
1083 <a name="_InitializeFunctionalClassAtomTypesInformation-"></a>1070 <span class="k">sub </span><span class="m">_InitializeFunctionalClassAtomTypesInformation</span> <span class="s">{</span>
1084 1071 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
1085 1072
1086 1073 <span class="c"># Default functional class atom typess to use for generating initial atom identifiers</span>
1087 1074 <span class="c"># are: HBD, HBA, PI, NI, Ar, Hal</span>
1088 1075 <span class="c">#</span>
1089 1076 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1090 1077 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}} = <span class="s">(</span><span class="q">&#39;HBD&#39;</span><span class="cm">,</span> <span class="q">&#39;HBA&#39;</span><span class="cm">,</span> <span class="q">&#39;PI&#39;</span><span class="cm">,</span> <span class="q">&#39;NI&#39;</span><span class="cm">,</span> <span class="q">&#39;Ar&#39;</span><span class="cm">,</span> <span class="q">&#39;Hal&#39;</span><span class="s">)</span><span class="sc">;</span>
1091 1078
1092 1079 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
1093 1080 <span class="s">}</span>
1094 1081
1095 1082 <span class="c"># Set atomic invariants to use for generation of intial atom indentifiers...</span>
1096 1083 <span class="c">#</span>
1097 <a name="SetAtomicInvariantsToUse-"></a>1084 <span class="k">sub </span><span class="m">SetAtomicInvariantsToUse</span> <span class="s">{</span>
1098 1085 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Values</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
1099 1086 <span class="k">my</span><span class="s">(</span><span class="i">$FirstValue</span><span class="cm">,</span> <span class="i">$TypeOfFirstValue</span><span class="cm">,</span> <span class="i">$AtomicInvariant</span><span class="cm">,</span> <span class="i">$SpecifiedAtomicInvariant</span><span class="cm">,</span> <span class="i">@SpecifiedAtomicInvariants</span><span class="cm">,</span> <span class="i">@AtomicInvariantsToUse</span><span class="s">)</span><span class="sc">;</span>
1100 1087
1101 1088 <span class="k">if</span> <span class="s">(</span>!<span class="i">@Values</span><span class="s">)</span> <span class="s">{</span>
1102 1089 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;SetAtomicInvariantsToUse: No values specified...&quot;</span><span class="sc">;</span>
1103 1090 <span class="k">return</span><span class="sc">;</span>
1104 1091 <span class="s">}</span>
1105 1092
1106 1093 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} !~ <span class="q">/^AtomicInvariantsAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
1107 1094 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;SetFunctionalAtomTypesToUse: AtomicInvariantsToUse can&#39;t be set for InitialAtomIdentifierType of $This-&gt;{AtomIdentifierType}...&quot;</span><span class="sc">;</span>
1108 1095 <span class="k">return</span><span class="sc">;</span>
1109 1096 <span class="s">}</span>
1110 1097
1111 1098 <span class="i">$FirstValue</span> = <span class="i">$Values</span>[<span class="n">0</span>]<span class="sc">;</span>
1112 1099 <span class="i">$TypeOfFirstValue</span> = <span class="k">ref</span> <span class="i">$FirstValue</span><span class="sc">;</span>
1113 1100
1114 1101 <span class="i">@SpecifiedAtomicInvariants</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1115 1102 <span class="i">@AtomicInvariantsToUse</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1116 1103
1117 1104 <span class="k">if</span> <span class="s">(</span><span class="i">$TypeOfFirstValue</span> =~ <span class="q">/^ARRAY/</span><span class="s">)</span> <span class="s">{</span>
1118 1105 <span class="k">push</span> <span class="i">@SpecifiedAtomicInvariants</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$FirstValue</span>}<span class="sc">;</span>
1119 1106 <span class="s">}</span>
1120 1107 <span class="k">else</span> <span class="s">{</span>
1121 1108 <span class="k">push</span> <span class="i">@SpecifiedAtomicInvariants</span><span class="cm">,</span> <span class="i">@Values</span><span class="sc">;</span>
1122 1109 <span class="s">}</span>
1123 1110
1124 1111 <span class="c"># Make sure specified AtomicInvariants are valid...</span>
1125 1112 <span class="k">for</span> <span class="i">$SpecifiedAtomicInvariant</span> <span class="s">(</span><span class="i">@SpecifiedAtomicInvariants</span><span class="s">)</span> <span class="s">{</span>
1126 1113 <span class="k">if</span> <span class="s">(</span>!<span class="i">AtomTypes::AtomicInvariantsAtomTypes::IsAtomicInvariantAvailable</span><span class="s">(</span><span class="i">$SpecifiedAtomicInvariant</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
1127 1114 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetAtomicInvariantsToUse: Specified atomic invariant, $SpecifiedAtomicInvariant, is not supported...\n &quot;</span><span class="sc">;</span>
1128 1115 <span class="s">}</span>
1129 1116 <span class="i">$AtomicInvariant</span> = <span class="i">$SpecifiedAtomicInvariant</span><span class="sc">;</span>
1130 1117 <span class="k">push</span> <span class="i">@AtomicInvariantsToUse</span><span class="cm">,</span> <span class="i">$AtomicInvariant</span><span class="sc">;</span>
1131 1118 <span class="s">}</span>
1132 1119
1133 1120 <span class="c"># Set atomic invariants to use...</span>
1134 1121 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1135 1122 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}}<span class="cm">,</span> <span class="i">@AtomicInvariantsToUse</span><span class="sc">;</span>
1136 1123
1137 1124 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
1138 1125 <span class="s">}</span>
1139 1126
1140 1127 <span class="c"># Set functional classes to use for generation of intial atom indentifiers...</span>
1141 1128 <span class="c">#</span>
1142 <a name="SetFunctionalClassesToUse-"></a>1129 <span class="k">sub </span><span class="m">SetFunctionalClassesToUse</span> <span class="s">{</span>
1143 1130 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">@Values</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
1144 1131 <span class="k">my</span><span class="s">(</span><span class="i">$FirstValue</span><span class="cm">,</span> <span class="i">$TypeOfFirstValue</span><span class="cm">,</span> <span class="i">$FunctionalClass</span><span class="cm">,</span> <span class="i">$SpecifiedFunctionalClass</span><span class="cm">,</span> <span class="i">@SpecifiedFunctionalClasses</span><span class="cm">,</span> <span class="i">@FunctionalClassesToUse</span><span class="s">)</span><span class="sc">;</span>
1145 1132
1146 1133 <span class="k">if</span> <span class="s">(</span>!<span class="i">@Values</span><span class="s">)</span> <span class="s">{</span>
1147 1134 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;SetFunctionalClassesToUse: No values specified...&quot;</span><span class="sc">;</span>
1148 1135 <span class="k">return</span><span class="sc">;</span>
1149 1136 <span class="s">}</span>
1150 1137
1151 1138 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} !~ <span class="q">/^FunctionalClassAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
1152 1139 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;SetFunctionalClassesToUse: FunctionalClassesToUse can&#39;t be set for InitialAtomIdentifierType of $This-&gt;{AtomIdentifierType}...&quot;</span><span class="sc">;</span>
1153 1140 <span class="k">return</span><span class="sc">;</span>
1154 1141 <span class="s">}</span>
1155 1142
1156 1143 <span class="i">$FirstValue</span> = <span class="i">$Values</span>[<span class="n">0</span>]<span class="sc">;</span>
1157 1144 <span class="i">$TypeOfFirstValue</span> = <span class="k">ref</span> <span class="i">$FirstValue</span><span class="sc">;</span>
1158 1145
1159 1146 <span class="i">@SpecifiedFunctionalClasses</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1160 1147 <span class="i">@FunctionalClassesToUse</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1161 1148
1162 1149 <span class="k">if</span> <span class="s">(</span><span class="i">$TypeOfFirstValue</span> =~ <span class="q">/^ARRAY/</span><span class="s">)</span> <span class="s">{</span>
1163 1150 <span class="k">push</span> <span class="i">@SpecifiedFunctionalClasses</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$FirstValue</span>}<span class="sc">;</span>
1164 1151 <span class="s">}</span>
1165 1152 <span class="k">else</span> <span class="s">{</span>
1166 1153 <span class="k">push</span> <span class="i">@SpecifiedFunctionalClasses</span><span class="cm">,</span> <span class="i">@Values</span><span class="sc">;</span>
1167 1154 <span class="s">}</span>
1168 1155
1169 1156 <span class="c"># Make sure specified FunctionalClasses are valid...</span>
1170 1157 <span class="k">for</span> <span class="i">$SpecifiedFunctionalClass</span> <span class="s">(</span><span class="i">@SpecifiedFunctionalClasses</span><span class="s">)</span> <span class="s">{</span>
1171 1158 <span class="k">if</span> <span class="s">(</span>!<span class="i">AtomTypes::FunctionalClassAtomTypes::IsFunctionalClassAvailable</span><span class="s">(</span><span class="i">$SpecifiedFunctionalClass</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
1172 1159 <span class="w">croak</span> <span class="q">&quot;Error: ${ClassName}-&gt;SetFunctionalClassesToUse: Specified functional class, $SpecifiedFunctionalClass, is not supported...\n &quot;</span><span class="sc">;</span>
1173 1160 <span class="s">}</span>
1174 1161 <span class="k">push</span> <span class="i">@FunctionalClassesToUse</span><span class="cm">,</span> <span class="i">$SpecifiedFunctionalClass</span><span class="sc">;</span>
1175 1162 <span class="s">}</span>
1176 1163
1177 1164 <span class="c"># Set functional classes to use...</span>
1178 1165 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1179 1166 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}}<span class="cm">,</span> <span class="i">@FunctionalClassesToUse</span><span class="sc">;</span>
1180 1167
1181 1168 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
1182 1169 <span class="s">}</span>
1183 1170
1184 1171 <span class="c"># Return a string containg data for ExtendedConnectivityFingerprints object...</span>
1185 <a name="StringifyExtendedConnectivityFingerprints-"></a>1172 <span class="k">sub </span><span class="m">StringifyExtendedConnectivityFingerprints</span> <span class="s">{</span>
1186 1173 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
1187 1174 <span class="k">my</span><span class="s">(</span><span class="i">$ExtendedConnectivityFingerprintsString</span><span class="s">)</span><span class="sc">;</span>
1188 1175
1189 1176 <span class="i">$ExtendedConnectivityFingerprintsString</span> = <span class="q">&quot;InitialAtomIdentifierType: $This-&gt;{AtomIdentifierType}; NeighborhoodRadius: $This-&gt;{NeighborhoodRadius}&quot;</span><span class="sc">;</span>
1190 1177
1191 1178 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^AtomicInvariantsAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
1192 1179 <span class="k">my</span><span class="s">(</span><span class="i">$AtomicInvariant</span><span class="cm">,</span> <span class="i">@AtomicInvariants</span><span class="cm">,</span> <span class="i">@AtomicInvariantsOrder</span><span class="cm">,</span> <span class="i">%AvailableAtomicInvariants</span><span class="s">)</span><span class="sc">;</span>
1193 1180
1194 1181 <span class="i">@AtomicInvariantsOrder</span> = <span class="i">AtomTypes::AtomicInvariantsAtomTypes::GetAtomicInvariantsOrder</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1195 1182 <span class="i">%AvailableAtomicInvariants</span> = <span class="i">AtomTypes::AtomicInvariantsAtomTypes::GetAvailableAtomicInvariants</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1196 1183
1197 1184 <span class="k">for</span> <span class="i">$AtomicInvariant</span> <span class="s">(</span><span class="i">@AtomicInvariantsOrder</span><span class="s">)</span> <span class="s">{</span>
1198 1185 <span class="k">push</span> <span class="i">@AtomicInvariants</span><span class="cm">,</span> <span class="q">&quot;$AtomicInvariant: $AvailableAtomicInvariants{$AtomicInvariant}&quot;</span><span class="sc">;</span>
1199 1186 <span class="s">}</span>
1200 1187
1201 1188 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; AtomicInvariantsToUse: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">AtomicInvariantsToUse</span>}}<span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1202 1189 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; AtomicInvariantsOrder: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@AtomicInvariantsOrder</span><span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1203 1190 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; AvailableAtomicInvariants: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@AtomicInvariants</span><span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1204 1191 <span class="s">}</span>
1205 1192 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AtomIdentifierType</span>} =~ <span class="q">/^FunctionalClassAtomTypes$/i</span><span class="s">)</span> <span class="s">{</span>
1206 1193 <span class="k">my</span><span class="s">(</span><span class="i">$FunctionalClass</span><span class="cm">,</span> <span class="i">@FunctionalClasses</span><span class="cm">,</span> <span class="i">@FunctionalClassesOrder</span><span class="cm">,</span> <span class="i">%AvailableFunctionalClasses</span><span class="s">)</span><span class="sc">;</span>
1207 1194
1208 1195 <span class="i">@FunctionalClassesOrder</span> = <span class="i">AtomTypes::FunctionalClassAtomTypes::GetFunctionalClassesOrder</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1209 1196 <span class="i">%AvailableFunctionalClasses</span> = <span class="i">AtomTypes::FunctionalClassAtomTypes::GetAvailableFunctionalClasses</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1210 1197
1211 1198 <span class="k">for</span> <span class="i">$FunctionalClass</span> <span class="s">(</span><span class="i">@FunctionalClassesOrder</span><span class="s">)</span> <span class="s">{</span>
1212 1199 <span class="k">push</span> <span class="i">@FunctionalClasses</span><span class="cm">,</span> <span class="q">&quot;$FunctionalClass: $AvailableFunctionalClasses{$FunctionalClass}&quot;</span><span class="sc">;</span>
1213 1200 <span class="s">}</span>
1214 1201
1215 1202 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; FunctionalClassesToUse: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">FunctionalClassesToUse</span>}}<span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1216 1203 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; FunctionalClassesOrder: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@FunctionalClassesOrder</span><span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1217 1204 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; AvailableFunctionalClasses: &lt;&quot;</span> . <span class="i">TextUtil::JoinWords</span><span class="s">(</span>\<span class="i">@FunctionalClasses</span><span class="cm">,</span> <span class="q">&quot;, &quot;</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
1218 1205 <span class="s">}</span>
1219 1206
1220 1207 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Type</span>} =~ <span class="q">/^ExtendedConnectivityBits$/i</span><span class="s">)</span> <span class="s">{</span>
1221 1208 <span class="c"># Size...</span>
1222 1209 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; Size: $This-&gt;{Size}; MinSize: $This-&gt;{MinSize}; MaxSize: $This-&gt;{MaxSize}&quot;</span><span class="sc">;</span>
1223 1210
1224 1211 <span class="c"># Fingerprint bit density and num of bits set...</span>
1225 1212 <span class="k">my</span><span class="s">(</span><span class="i">$NumOfSetBits</span><span class="cm">,</span> <span class="i">$BitDensity</span><span class="s">)</span><span class="sc">;</span>
1226 1213 <span class="i">$NumOfSetBits</span> = <span class="i">$This</span>-&gt;{<span class="w">FingerprintsBitVector</span>}<span class="i">-&gt;GetNumOfSetBits</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1227 1214 <span class="i">$BitDensity</span> = <span class="i">$This</span>-&gt;{<span class="w">FingerprintsBitVector</span>}<span class="i">-&gt;GetFingerprintsBitDensity</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1228 1215 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; NumOfOnBits: $NumOfSetBits; BitDensity: $BitDensity&quot;</span><span class="sc">;</span>
1229 1216
1230 1217 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; FingerprintsBitVector: &lt; $This-&gt;{FingerprintsBitVector} &gt;&quot;</span><span class="sc">;</span>
1231 1218 <span class="s">}</span>
1232 1219 <span class="k">else</span> <span class="s">{</span>
1233 1220 <span class="c"># Number of identifiers...</span>
1234 1221 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; NumOfIdentifiers: &quot;</span> . <span class="i">$This</span>-&gt;{<span class="w">FingerprintsVector</span>}<span class="i">-&gt;GetNumOfValues</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
1235 1222
1236 1223 <span class="c"># FingerprintsVector...</span>
1237 1224 <span class="i">$ExtendedConnectivityFingerprintsString</span> .= <span class="q">&quot;; FingerprintsVector: &lt; $This-&gt;{FingerprintsVector} &gt;&quot;</span><span class="sc">;</span>
1238 1225 <span class="s">}</span>
1239 1226
1240 1227 <span class="k">return</span> <span class="i">$ExtendedConnectivityFingerprintsString</span><span class="sc">;</span>
1241 1228 <span class="s">}</span>
1242 1229
1243 <a name="EOF-"></a></pre>
1244 <p>&nbsp;</p>
1245 <br />
1246 <center>
1247 <img src="../../../images/h2o2.png">
1248 </center>
1249 </body>
1250 </html>