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 <span id="projectnumber">3.03</span>
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<div class="title">/usr/local/google/home/jbreiden/tesseract-ocr-read-only/ccstruct/split.cpp</div> </div>
102
<div class="contents">
103
<a href="a00795.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*-C-*-</span>
104
<a name="l00002"></a>00002 <span class="comment"> ********************************************************************************</span>
105
<a name="l00003"></a>00003 <span class="comment"> *</span>
106
<a name="l00004"></a>00004 <span class="comment"> * File: split.c (Formerly split.c)</span>
107
<a name="l00005"></a>00005 <span class="comment"> * Description:</span>
108
<a name="l00006"></a>00006 <span class="comment"> * Author: Mark Seaman, OCR Technology</span>
109
<a name="l00007"></a>00007 <span class="comment"> * Created: Fri Oct 16 14:37:00 1987</span>
110
<a name="l00008"></a>00008 <span class="comment"> * Modified: Fri May 17 16:27:49 1991 (Mark Seaman) marks@hpgrlt</span>
111
<a name="l00009"></a>00009 <span class="comment"> * Language: C</span>
112
<a name="l00010"></a>00010 <span class="comment"> * Package: N/A</span>
113
<a name="l00011"></a>00011 <span class="comment"> * Status: Reusable Software Component</span>
114
<a name="l00012"></a>00012 <span class="comment"> *</span>
115
<a name="l00013"></a>00013 <span class="comment"> * (c) Copyright 1987, Hewlett-Packard Company.</span>
116
<a name="l00014"></a>00014 <span class="comment"> ** Licensed under the Apache License, Version 2.0 (the "License");</span>
117
<a name="l00015"></a>00015 <span class="comment"> ** you may not use this file except in compliance with the License.</span>
118
<a name="l00016"></a>00016 <span class="comment"> ** You may obtain a copy of the License at</span>
119
<a name="l00017"></a>00017 <span class="comment"> ** http://www.apache.org/licenses/LICENSE-2.0</span>
120
<a name="l00018"></a>00018 <span class="comment"> ** Unless required by applicable law or agreed to in writing, software</span>
121
<a name="l00019"></a>00019 <span class="comment"> ** distributed under the License is distributed on an "AS IS" BASIS,</span>
122
<a name="l00020"></a>00020 <span class="comment"> ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
123
<a name="l00021"></a>00021 <span class="comment"> ** See the License for the specific language governing permissions and</span>
124
<a name="l00022"></a>00022 <span class="comment"> ** limitations under the License.</span>
125
<a name="l00023"></a>00023 <span class="comment"> *</span>
126
<a name="l00024"></a>00024 <span class="comment"> *************************************************************************/</span>
127
<a name="l00025"></a>00025 <span class="comment">/*----------------------------------------------------------------------</span>
128
<a name="l00026"></a>00026 <span class="comment"> I n c l u d e s</span>
129
<a name="l00027"></a>00027 <span class="comment">----------------------------------------------------------------------*/</span>
130
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="a00796.html">split.h</a>"</span>
131
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="a00740.html">coutln.h</a>"</span>
132
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="a00860.html">tprintf.h</a>"</span>
133
<a name="l00031"></a>00031
134
<a name="l00032"></a>00032 <span class="preprocessor">#ifdef __UNIX__</span>
135
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#include <assert.h></span>
136
<a name="l00034"></a>00034 <span class="preprocessor">#endif</span>
137
<a name="l00035"></a>00035 <span class="preprocessor"></span>
138
<a name="l00036"></a>00036 <span class="comment">/*----------------------------------------------------------------------</span>
139
<a name="l00037"></a>00037 <span class="comment"> V a r i a b l e s</span>
140
<a name="l00038"></a>00038 <span class="comment">----------------------------------------------------------------------*/</span>
141
<a name="l00039"></a><a class="code" href="a00796.html#ac251ee3f4ff4145a52a8ba54a1b26743">00039</a> <a class="code" href="a00844.html#a442e7f541a050acf5ebda026db177877">BOOL_VAR</a>(<a class="code" href="a00795.html#ac251ee3f4ff4145a52a8ba54a1b26743">wordrec_display_splits</a>, 0, <span class="stringliteral">"Display splits"</span>);
142
<a name="l00040"></a>00040
143
<a name="l00041"></a>00041 <span class="comment">/*----------------------------------------------------------------------</span>
144
<a name="l00042"></a>00042 <span class="comment"> F u n c t i o n s</span>
145
<a name="l00043"></a>00043 <span class="comment">----------------------------------------------------------------------*/</span>
146
<a name="l00044"></a>00044
147
<a name="l00045"></a>00045 <span class="comment">/**********************************************************************</span>
148
<a name="l00046"></a>00046 <span class="comment"> * delete_split</span>
149
<a name="l00047"></a>00047 <span class="comment"> *</span>
150
<a name="l00048"></a>00048 <span class="comment"> * Remove this split from existence.</span>
151
<a name="l00049"></a>00049 <span class="comment"> **********************************************************************/</span>
152
<a name="l00050"></a><a class="code" href="a00796.html#a6462aa6ed767d7f46c4a72506cceaeeb">00050</a> <span class="keywordtype">void</span> <a class="code" href="a00795.html#a6462aa6ed767d7f46c4a72506cceaeeb">delete_split</a>(<a class="code" href="a00553.html">SPLIT</a> *split) {
153
<a name="l00051"></a>00051 <span class="keywordflow">if</span> (split) {
154
<a name="l00052"></a>00052 <span class="keyword">delete</span> split;
155
<a name="l00053"></a>00053 }
156
<a name="l00054"></a>00054 }
157
<a name="l00055"></a>00055
158
<a name="l00056"></a>00056
159
<a name="l00057"></a>00057 <span class="comment">/**********************************************************************</span>
160
<a name="l00058"></a>00058 <span class="comment"> * make_edgept</span>
161
<a name="l00059"></a>00059 <span class="comment"> *</span>
162
<a name="l00060"></a>00060 <span class="comment"> * Create an EDGEPT and hook it into an existing list of edge points.</span>
163
<a name="l00061"></a>00061 <span class="comment"> **********************************************************************/</span>
164
<a name="l00062"></a><a class="code" href="a00796.html#abe45460790758fd43e35acbad4eed1c5">00062</a> <a class="code" href="a00362.html">EDGEPT</a> *<a class="code" href="a00795.html#abe45460790758fd43e35acbad4eed1c5">make_edgept</a>(<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <a class="code" href="a00362.html">EDGEPT</a> *next, <a class="code" href="a00362.html">EDGEPT</a> *prev) {
165
<a name="l00063"></a>00063 <a class="code" href="a00362.html">EDGEPT</a> *this_edgept;
166
<a name="l00064"></a>00064 <span class="comment">/* Create point */</span>
167
<a name="l00065"></a>00065 this_edgept = <span class="keyword">new</span> <a class="code" href="a00362.html">EDGEPT</a>;
168
<a name="l00066"></a>00066 this_edgept-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = x;
169
<a name="l00067"></a>00067 this_edgept-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = y;
170
<a name="l00068"></a>00068 <span class="comment">// Now deal with the src_outline steps.</span>
171
<a name="l00069"></a>00069 <a class="code" href="a00290.html">C_OUTLINE</a>* prev_ol = prev-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a>;
172
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (prev_ol != NULL && prev-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> == next) {
173
<a name="l00071"></a>00071 <span class="comment">// Compute the fraction of the segment that is being cut.</span>
174
<a name="l00072"></a>00072 <a class="code" href="a00375.html">FCOORD</a> segment_vec(next-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, next-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>);
175
<a name="l00073"></a>00073 <a class="code" href="a00375.html">FCOORD</a> target_vec(x - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, y - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>);
176
<a name="l00074"></a>00074 <span class="keywordtype">double</span> cut_fraction = target_vec.<a class="code" href="a00375.html#a57c525156717d9e0823230eb5b84255d" title="find length">length</a>() / segment_vec.<a class="code" href="a00375.html#a57c525156717d9e0823230eb5b84255d" title="find length">length</a>();
177
<a name="l00075"></a>00075 <span class="comment">// Get the start and end at the step level.</span>
178
<a name="l00076"></a>00076 <a class="code" href="a00409.html" title="integer coordinate">ICOORD</a> step_start = prev_ol-><a class="code" href="a00290.html#a5e3d80aede6a5701d07bfe42213fc783">position_at_index</a>(prev-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>);
179
<a name="l00077"></a>00077 <span class="keywordtype">int</span> end_step = prev-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> + prev-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
180
<a name="l00078"></a>00078 <span class="keywordtype">int</span> step_length = prev_ol-><a class="code" href="a00290.html#afb87d87d3d48e964937b068f55f3ca3a">pathlength</a>();
181
<a name="l00079"></a>00079 <a class="code" href="a00409.html" title="integer coordinate">ICOORD</a> step_end = prev_ol-><a class="code" href="a00290.html#a5e3d80aede6a5701d07bfe42213fc783">position_at_index</a>(end_step % step_length);
182
<a name="l00080"></a>00080 <a class="code" href="a00409.html" title="integer coordinate">ICOORD</a> step_vec = step_end - step_start;
183
<a name="l00081"></a>00081 <span class="keywordtype">double</span> target_length = step_vec.<a class="code" href="a00409.html#afe51e3c6be6d553445db72851cf4c305" title="find length">length</a>() * cut_fraction;
184
<a name="l00082"></a>00082 <span class="comment">// Find the point on the segment that gives the length nearest to target.</span>
185
<a name="l00083"></a>00083 <span class="keywordtype">int</span> best_step = prev-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
186
<a name="l00084"></a>00084 <a class="code" href="a00409.html" title="integer coordinate">ICOORD</a> total_step(0, 0);
187
<a name="l00085"></a>00085 <span class="keywordtype">double</span> best_dist = target_length;
188
<a name="l00086"></a>00086 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = prev-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>; s < end_step; ++s) {
189
<a name="l00087"></a>00087 total_step += prev_ol-><a class="code" href="a00290.html#aea43094f29c8fc05632b449b45b66072">step</a>(s % step_length);
190
<a name="l00088"></a>00088 <span class="keywordtype">double</span> dist = fabs(target_length - total_step.<a class="code" href="a00409.html#afe51e3c6be6d553445db72851cf4c305" title="find length">length</a>());
191
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (dist < best_dist) {
192
<a name="l00090"></a>00090 best_dist = dist;
193
<a name="l00091"></a>00091 best_step = s + 1;
194
<a name="l00092"></a>00092 }
195
<a name="l00093"></a>00093 }
196
<a name="l00094"></a>00094 <span class="comment">// The new point is an intermediate point.</span>
197
<a name="l00095"></a>00095 this_edgept-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = prev_ol;
198
<a name="l00096"></a>00096 this_edgept-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = end_step - best_step;
199
<a name="l00097"></a>00097 this_edgept-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = best_step % step_length;
200
<a name="l00098"></a>00098 prev-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = best_step - prev-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
201
<a name="l00099"></a>00099 } <span class="keywordflow">else</span> {
202
<a name="l00100"></a>00100 <span class="comment">// The new point is poly only.</span>
203
<a name="l00101"></a>00101 this_edgept-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = NULL;
204
<a name="l00102"></a>00102 this_edgept-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = 0;
205
<a name="l00103"></a>00103 this_edgept-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = 0;
206
<a name="l00104"></a>00104 }
207
<a name="l00105"></a>00105 <span class="comment">/* Hook it up */</span>
208
<a name="l00106"></a>00106 this_edgept-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> = next;
209
<a name="l00107"></a>00107 this_edgept-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a> = prev;
210
<a name="l00108"></a>00108 prev-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> = this_edgept;
211
<a name="l00109"></a>00109 next-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a> = this_edgept;
212
<a name="l00110"></a>00110 <span class="comment">/* Set up vec entries */</span>
213
<a name="l00111"></a>00111 this_edgept-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = this_edgept-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> - x;
214
<a name="l00112"></a>00112 this_edgept-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = this_edgept-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> - y;
215
<a name="l00113"></a>00113 this_edgept-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a>-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = x - this_edgept-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>;
216
<a name="l00114"></a>00114 this_edgept-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a>-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = y - this_edgept-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>;
217
<a name="l00115"></a>00115 <span class="keywordflow">return</span> this_edgept;
218
<a name="l00116"></a>00116 }
219
<a name="l00117"></a>00117
220
<a name="l00118"></a>00118 <span class="comment">/**********************************************************************</span>
221
<a name="l00119"></a>00119 <span class="comment"> * remove_edgept</span>
222
<a name="l00120"></a>00120 <span class="comment"> *</span>
223
<a name="l00121"></a>00121 <span class="comment"> * Remove a given EDGEPT from its list and delete it.</span>
224
<a name="l00122"></a>00122 <span class="comment"> **********************************************************************/</span>
225
<a name="l00123"></a><a class="code" href="a00796.html#ada6ba0f2954768ab4b7d9d2cf165dee0">00123</a> <span class="keywordtype">void</span> <a class="code" href="a00795.html#ada6ba0f2954768ab4b7d9d2cf165dee0">remove_edgept</a>(<a class="code" href="a00362.html">EDGEPT</a> *point) {
226
<a name="l00124"></a>00124 <a class="code" href="a00362.html">EDGEPT</a> *prev = point-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a>;
227
<a name="l00125"></a>00125 <a class="code" href="a00362.html">EDGEPT</a> *next = point-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
228
<a name="l00126"></a>00126 <span class="comment">// Add point's steps onto prev's steps if they are from the same outline.</span>
229
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (prev-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> == point-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> && prev-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> != NULL) {
230
<a name="l00128"></a>00128 prev-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> += point-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
231
<a name="l00129"></a>00129 }
232
<a name="l00130"></a>00130 prev-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> = next;
233
<a name="l00131"></a>00131 next-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a> = prev;
234
<a name="l00132"></a>00132 prev-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = next-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>;
235
<a name="l00133"></a>00133 prev-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = next-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> - prev-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>;
236
<a name="l00134"></a>00134 <span class="keyword">delete</span> point;
237
<a name="l00135"></a>00135 }
238
<a name="l00136"></a>00136
239
<a name="l00137"></a>00137 <span class="comment">/**********************************************************************</span>
240
<a name="l00138"></a>00138 <span class="comment"> * new_split</span>
241
<a name="l00139"></a>00139 <span class="comment"> *</span>
242
<a name="l00140"></a>00140 <span class="comment"> * Create a new split record and initialize it. Put it on the display</span>
243
<a name="l00141"></a>00141 <span class="comment"> * list.</span>
244
<a name="l00142"></a>00142 <span class="comment"> **********************************************************************/</span>
245
<a name="l00143"></a><a class="code" href="a00796.html#a1a2a3ae46393d911b723c12107dc0183">00143</a> <a class="code" href="a00553.html">SPLIT</a> *<a class="code" href="a00795.html#a1a2a3ae46393d911b723c12107dc0183">new_split</a>(<a class="code" href="a00362.html">EDGEPT</a> *point1, <a class="code" href="a00362.html">EDGEPT</a> *point2) {
246
<a name="l00144"></a>00144 <a class="code" href="a00553.html">SPLIT</a> *s = <span class="keyword">new</span> <a class="code" href="a00796.html#a8caa4994d858ff69cd340ac6f89731cb">SPLIT</a>;
247
<a name="l00145"></a>00145 s-><a class="code" href="a00553.html#a2451170e7785bb495c0dd3d96fc71167">point1</a> = point1;
248
<a name="l00146"></a>00146 s-><a class="code" href="a00553.html#adb5ec4152eddde15c1996133177a9a58">point2</a> = point2;
249
<a name="l00147"></a>00147 <span class="keywordflow">return</span> (s);
250
<a name="l00148"></a>00148 }
251
<a name="l00149"></a>00149
252
<a name="l00150"></a>00150
253
<a name="l00151"></a>00151 <span class="comment">/**********************************************************************</span>
254
<a name="l00152"></a>00152 <span class="comment"> * print_split</span>
255
<a name="l00153"></a>00153 <span class="comment"> *</span>
256
<a name="l00154"></a>00154 <span class="comment"> * Print a list of splits. Show the coordinates of both points in</span>
257
<a name="l00155"></a>00155 <span class="comment"> * each split.</span>
258
<a name="l00156"></a>00156 <span class="comment"> **********************************************************************/</span>
259
<a name="l00157"></a><a class="code" href="a00796.html#a24210aac50f8b01c1c50b94262865269">00157</a> <span class="keywordtype">void</span> <a class="code" href="a00795.html#a24210aac50f8b01c1c50b94262865269">print_split</a>(<a class="code" href="a00553.html">SPLIT</a> *split) {
260
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (split) {
261
<a name="l00159"></a>00159 <a class="code" href="a00860.html#a02aa7cca2c3857c14716e8cca96ace6c">tprintf</a>(<span class="stringliteral">"(%d,%d)--(%d,%d)"</span>,
262
<a name="l00160"></a>00160 split-><a class="code" href="a00553.html#a2451170e7785bb495c0dd3d96fc71167">point1</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, split-><a class="code" href="a00553.html#a2451170e7785bb495c0dd3d96fc71167">point1</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>,
263
<a name="l00161"></a>00161 split-><a class="code" href="a00553.html#adb5ec4152eddde15c1996133177a9a58">point2</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, split-><a class="code" href="a00553.html#adb5ec4152eddde15c1996133177a9a58">point2</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>);
264
<a name="l00162"></a>00162 }
265
<a name="l00163"></a>00163 }
266
<a name="l00164"></a>00164
267
<a name="l00165"></a>00165
268
<a name="l00166"></a>00166 <span class="comment">/**********************************************************************</span>
269
<a name="l00167"></a>00167 <span class="comment"> * split_outline</span>
270
<a name="l00168"></a>00168 <span class="comment"> *</span>
271
<a name="l00169"></a>00169 <span class="comment"> * Split between these two edge points.</span>
272
<a name="l00170"></a>00170 <span class="comment"> **********************************************************************/</span>
273
<a name="l00171"></a><a class="code" href="a00796.html#ac76a475de30b432aa78727bd6b93a729">00171</a> <span class="keywordtype">void</span> <a class="code" href="a00795.html#ac76a475de30b432aa78727bd6b93a729">split_outline</a>(<a class="code" href="a00362.html">EDGEPT</a> *join_point1, <a class="code" href="a00362.html">EDGEPT</a> *join_point2) {
274
<a name="l00172"></a>00172 assert(join_point1 != join_point2);
275
<a name="l00173"></a>00173
276
<a name="l00174"></a>00174 <a class="code" href="a00362.html">EDGEPT</a>* temp2 = join_point2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
277
<a name="l00175"></a>00175 <a class="code" href="a00362.html">EDGEPT</a>* temp1 = join_point1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
278
<a name="l00176"></a>00176 <span class="comment">/* Create two new points */</span>
279
<a name="l00177"></a>00177 <a class="code" href="a00362.html">EDGEPT</a>* new_point1 = <a class="code" href="a00795.html#abe45460790758fd43e35acbad4eed1c5">make_edgept</a>(join_point1-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, join_point1-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>,
280
<a name="l00178"></a>00178 temp1, join_point2);
281
<a name="l00179"></a>00179 <a class="code" href="a00362.html">EDGEPT</a>* new_point2 = <a class="code" href="a00795.html#abe45460790758fd43e35acbad4eed1c5">make_edgept</a>(join_point2-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>, join_point2-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>,
282
<a name="l00180"></a>00180 temp2, join_point1);
283
<a name="l00181"></a>00181 <span class="comment">// Join_point1 and 2 are now cross-over points, so they must have NULL</span>
284
<a name="l00182"></a>00182 <span class="comment">// src_outlines and give their src_outline information their new</span>
285
<a name="l00183"></a>00183 <span class="comment">// replacements.</span>
286
<a name="l00184"></a>00184 new_point1-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = join_point1-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a>;
287
<a name="l00185"></a>00185 new_point1-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = join_point1-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
288
<a name="l00186"></a>00186 new_point1-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = join_point1-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
289
<a name="l00187"></a>00187 new_point2-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = join_point2-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a>;
290
<a name="l00188"></a>00188 new_point2-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = join_point2-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
291
<a name="l00189"></a>00189 new_point2-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = join_point2-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
292
<a name="l00190"></a>00190 join_point1-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = NULL;
293
<a name="l00191"></a>00191 join_point1-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = 0;
294
<a name="l00192"></a>00192 join_point1-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = 0;
295
<a name="l00193"></a>00193 join_point2-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = NULL;
296
<a name="l00194"></a>00194 join_point2-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = 0;
297
<a name="l00195"></a>00195 join_point2-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = 0;
298
<a name="l00196"></a>00196 join_point1-><a class="code" href="a00362.html#ad30360dff9dbd10b80c03a8d854759a4">MarkChop</a>();
299
<a name="l00197"></a>00197 join_point2-><a class="code" href="a00362.html#ad30360dff9dbd10b80c03a8d854759a4">MarkChop</a>();
300
<a name="l00198"></a>00198 }
301
<a name="l00199"></a>00199
302
<a name="l00200"></a>00200
303
<a name="l00201"></a>00201 <span class="comment">/**********************************************************************</span>
304
<a name="l00202"></a>00202 <span class="comment"> * unsplit_outlines</span>
305
<a name="l00203"></a>00203 <span class="comment"> *</span>
306
<a name="l00204"></a>00204 <span class="comment"> * Remove the split that was put between these two points.</span>
307
<a name="l00205"></a>00205 <span class="comment"> **********************************************************************/</span>
308
<a name="l00206"></a><a class="code" href="a00796.html#a3c66a2f04c0878b8982e04d5a3d29e04">00206</a> <span class="keywordtype">void</span> <a class="code" href="a00795.html#a3c66a2f04c0878b8982e04d5a3d29e04">unsplit_outlines</a>(<a class="code" href="a00362.html">EDGEPT</a> *p1, <a class="code" href="a00362.html">EDGEPT</a> *p2) {
309
<a name="l00207"></a>00207 <a class="code" href="a00362.html">EDGEPT</a> *tmp1 = p1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
310
<a name="l00208"></a>00208 <a class="code" href="a00362.html">EDGEPT</a> *tmp2 = p2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
311
<a name="l00209"></a>00209
312
<a name="l00210"></a>00210 assert (p1 != p2);
313
<a name="l00211"></a>00211
314
<a name="l00212"></a>00212 tmp1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a> = p2;
315
<a name="l00213"></a>00213 tmp2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#a8326da8daf597bcdc5a05064a37cbbb1">prev</a> = p1;
316
<a name="l00214"></a>00214
317
<a name="l00215"></a>00215 <span class="comment">// tmp2 is coincident with p1. p1 takes tmp2's place as tmp2 is deleted.</span>
318
<a name="l00216"></a>00216 p1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> = tmp2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
319
<a name="l00217"></a>00217 p1-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = tmp2-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a>;
320
<a name="l00218"></a>00218 p1-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = tmp2-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
321
<a name="l00219"></a>00219 p1-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = tmp2-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
322
<a name="l00220"></a>00220 <span class="comment">// Likewise p2 takes tmp1's place.</span>
323
<a name="l00221"></a>00221 p2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a> = tmp1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>;
324
<a name="l00222"></a>00222 p2-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a> = tmp1-><a class="code" href="a00362.html#a6c94887c0e59312611b9cbc9edf9d5fb">src_outline</a>;
325
<a name="l00223"></a>00223 p2-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a> = tmp1-><a class="code" href="a00362.html#a0c73291ef68cb65a10f973ff98a10424">start_step</a>;
326
<a name="l00224"></a>00224 p2-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a> = tmp1-><a class="code" href="a00362.html#a34a59945d65b7db4f0f8aa11a3cfe8c0">step_count</a>;
327
<a name="l00225"></a>00225 p1-><a class="code" href="a00362.html#ada0d8262b4d5e7fbff23bd4cc7e1f942">UnmarkChop</a>();
328
<a name="l00226"></a>00226 p2-><a class="code" href="a00362.html#ada0d8262b4d5e7fbff23bd4cc7e1f942">UnmarkChop</a>();
329
<a name="l00227"></a>00227
330
<a name="l00228"></a>00228 <span class="keyword">delete</span> tmp1;
331
<a name="l00229"></a>00229 <span class="keyword">delete</span> tmp2;
332
<a name="l00230"></a>00230
333
<a name="l00231"></a>00231 p1-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = p1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> - p1-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>;
334
<a name="l00232"></a>00232 p1-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = p1-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> - p1-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>;
335
<a name="l00233"></a>00233
336
<a name="l00234"></a>00234 p2-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> = p2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a> - p2-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#aa9c98655c3a2a0437821e5a3d3418b0f">x</a>;
337
<a name="l00235"></a>00235 p2-><a class="code" href="a00362.html#a6da204ff253a65e00daae7753b82c9f7">vec</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> = p2-><a class="code" href="a00362.html#a196f7786194752f89e364a586d24884d">next</a>-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a> - p2-><a class="code" href="a00362.html#adee462d390e637a8393ba373c8d2a1bb">pos</a>.<a class="code" href="a00629.html#a6d62f015b74612e43975e439a096039c">y</a>;
338
<a name="l00236"></a>00236 }
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