Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccstruct/rect.cpp @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /**********************************************************************
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2 * File: rect.cpp (Formerly box.c)
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3 * Description: Bounding box class definition.
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4 * Author: Phil Cheatle
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5 *
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6 * (C) Copyright 1991, Hewlett-Packard Ltd.
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7 ** Licensed under the Apache License, Version 2.0 (the "License");
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8 ** you may not use this file except in compliance with the License.
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9 ** You may obtain a copy of the License at
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10 ** http://www.apache.org/licenses/LICENSE-2.0
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11 ** Unless required by applicable law or agreed to in writing, software
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12 ** distributed under the License is distributed on an "AS IS" BASIS,
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13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 ** See the License for the specific language governing permissions and
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15 ** limitations under the License.
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16 *
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17 **********************************************************************/
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19 // Include automatically generated configuration file if running autoconf.
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20 #ifdef HAVE_CONFIG_H
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21 # include "config_auto.h"
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22 #endif
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24 #include "rect.h"
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26 #include "serialis.h" // for TFile
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28 namespace tesseract {
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30 /**********************************************************************
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31 * TBOX::TBOX() Constructor from 2 ICOORDS
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32 *
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33 **********************************************************************/
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34
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35 TBOX::TBOX( // constructor
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36 const ICOORD pt1, // one corner
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37 const ICOORD pt2 // the other corner
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38 ) {
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39 if (pt1.x() <= pt2.x()) {
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40 if (pt1.y() <= pt2.y()) {
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41 bot_left = pt1;
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42 top_right = pt2;
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43 } else {
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44 bot_left = ICOORD(pt1.x(), pt2.y());
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45 top_right = ICOORD(pt2.x(), pt1.y());
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46 }
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47 } else {
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48 if (pt1.y() <= pt2.y()) {
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49 bot_left = ICOORD(pt2.x(), pt1.y());
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50 top_right = ICOORD(pt1.x(), pt2.y());
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51 } else {
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52 bot_left = pt2;
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53 top_right = pt1;
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54 }
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55 }
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56 }
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57
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58 bool TBOX::DeSerialize(TFile *f) {
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59 return bot_left.DeSerialize(f) && top_right.DeSerialize(f);
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60 }
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61
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62 bool TBOX::Serialize(TFile *f) const {
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63 return bot_left.Serialize(f) && top_right.Serialize(f);
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64 }
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65
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66 // rotate_large constructs the containing bounding box of all 4
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67 // corners after rotating them. It therefore guarantees that all
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68 // original content is contained within, but also slightly enlarges the box.
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69 void TBOX::rotate_large(const FCOORD &vec) {
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70 ICOORD top_left(bot_left.x(), top_right.y());
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71 ICOORD bottom_right(top_right.x(), bot_left.y());
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72 top_left.rotate(vec);
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73 bottom_right.rotate(vec);
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74 rotate(vec);
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75 TBOX box2(top_left, bottom_right);
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76 *this += box2;
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77 }
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78
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79 /**********************************************************************
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80 * TBOX::intersection() Build the largest box contained in both boxes
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81 *
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82 **********************************************************************/
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83
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84 TBOX TBOX::intersection( // shared area box
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85 const TBOX &box) const {
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86 TDimension left;
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87 TDimension bottom;
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88 TDimension right;
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89 TDimension top;
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90 if (overlap(box)) {
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91 if (box.bot_left.x() > bot_left.x()) {
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92 left = box.bot_left.x();
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93 } else {
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94 left = bot_left.x();
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95 }
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96
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97 if (box.top_right.x() < top_right.x()) {
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98 right = box.top_right.x();
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99 } else {
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100 right = top_right.x();
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101 }
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102
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diff changeset
103 if (box.bot_left.y() > bot_left.y()) {
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parents:
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104 bottom = box.bot_left.y();
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parents:
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105 } else {
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parents:
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106 bottom = bot_left.y();
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107 }
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108
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diff changeset
109 if (box.top_right.y() < top_right.y()) {
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parents:
diff changeset
110 top = box.top_right.y();
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parents:
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111 } else {
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112 top = top_right.y();
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113 }
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114 } else {
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115 left = INT16_MAX;
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116 bottom = INT16_MAX;
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117 top = -INT16_MAX;
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118 right = -INT16_MAX;
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119 }
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120 return TBOX(left, bottom, right, top);
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121 }
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122
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123 /**********************************************************************
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124 * TBOX::bounding_union() Build the smallest box containing both boxes
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125 *
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126 **********************************************************************/
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127
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128 TBOX TBOX::bounding_union( // box enclosing both
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129 const TBOX &box) const {
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130 ICOORD bl; // bottom left
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131 ICOORD tr; // top right
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132
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diff changeset
133 if (box.bot_left.x() < bot_left.x()) {
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parents:
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134 bl.set_x(box.bot_left.x());
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135 } else {
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136 bl.set_x(bot_left.x());
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137 }
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138
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parents:
diff changeset
139 if (box.top_right.x() > top_right.x()) {
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parents:
diff changeset
140 tr.set_x(box.top_right.x());
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141 } else {
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parents:
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142 tr.set_x(top_right.x());
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143 }
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144
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parents:
diff changeset
145 if (box.bot_left.y() < bot_left.y()) {
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parents:
diff changeset
146 bl.set_y(box.bot_left.y());
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parents:
diff changeset
147 } else {
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parents:
diff changeset
148 bl.set_y(bot_left.y());
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149 }
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150
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parents:
diff changeset
151 if (box.top_right.y() > top_right.y()) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
152 tr.set_y(box.top_right.y());
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parents:
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153 } else {
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parents:
diff changeset
154 tr.set_y(top_right.y());
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155 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156 return TBOX(bl, tr);
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parents:
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157 }
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158
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parents:
diff changeset
159 /**********************************************************************
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parents:
diff changeset
160 * TBOX::plot() Paint a box using specified settings
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diff changeset
161 *
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parents:
diff changeset
162 **********************************************************************/
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parents:
diff changeset
163
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diff changeset
164 #ifndef GRAPHICS_DISABLED
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parents:
diff changeset
165 void TBOX::plot( // paint box
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parents:
diff changeset
166 ScrollView *fd, // where to paint
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parents:
diff changeset
167 ScrollView::Color fill_colour, // colour for inside
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parents:
diff changeset
168 ScrollView::Color border_colour // colour for border
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parents:
diff changeset
169 ) const {
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parents:
diff changeset
170 fd->Brush(fill_colour);
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parents:
diff changeset
171 fd->Pen(border_colour);
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parents:
diff changeset
172 plot(fd);
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173 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 #endif
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175
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parents:
diff changeset
176 // Appends the bounding box as (%d,%d)->(%d,%d) to a string.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 void TBOX::print_to_str(std::string &str) const {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
178 // "(%d,%d)->(%d,%d)", left(), bottom(), right(), top()
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179 str += "(" + std::to_string(left());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
180 str += "," + std::to_string(bottom());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181 str += ")->(" + std::to_string(right());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 str += "," + std::to_string(top());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 str += ')';
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Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
184 }
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diff changeset
185
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parents:
diff changeset
186 // Writes to the given file. Returns false in case of error.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 bool TBOX::Serialize(FILE *fp) const {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
188 if (!bot_left.Serialize(fp)) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189 return false;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 if (!top_right.Serialize(fp)) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
192 return false;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
193 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
194 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
195 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
196 // Reads from the given file. Returns false in case of error.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
197 // If swap is true, assumes a big/little-endian swap is needed.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198 bool TBOX::DeSerialize(bool swap, FILE *fp) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
199 if (!bot_left.DeSerialize(swap, fp)) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
200 return false;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
201 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
202 if (!top_right.DeSerialize(swap, fp)) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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203 return false;
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204 }
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205 return true;
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206 }
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207
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208 /**********************************************************************
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209 * operator+=
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210 *
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211 * Extend one box to include the other (In place union)
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212 **********************************************************************/
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213
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214 TBOX &operator+=( // bounding bounding bx
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215 TBOX &op1, // operands
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216 const TBOX &op2) {
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217 if (op2.bot_left.x() < op1.bot_left.x()) {
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218 op1.bot_left.set_x(op2.bot_left.x());
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219 }
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220
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221 if (op2.top_right.x() > op1.top_right.x()) {
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222 op1.top_right.set_x(op2.top_right.x());
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223 }
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224
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225 if (op2.bot_left.y() < op1.bot_left.y()) {
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226 op1.bot_left.set_y(op2.bot_left.y());
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227 }
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228
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229 if (op2.top_right.y() > op1.top_right.y()) {
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230 op1.top_right.set_y(op2.top_right.y());
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231 }
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232
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233 return op1;
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234 }
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235
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236 /**********************************************************************
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237 * operator&=
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238 *
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239 * Reduce one box to intersection with the other (In place intersection)
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240 **********************************************************************/
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241
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242 TBOX &operator&=(TBOX &op1, const TBOX &op2) {
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243 if (op1.overlap(op2)) {
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244 if (op2.bot_left.x() > op1.bot_left.x()) {
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245 op1.bot_left.set_x(op2.bot_left.x());
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246 }
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247
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248 if (op2.top_right.x() < op1.top_right.x()) {
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249 op1.top_right.set_x(op2.top_right.x());
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250 }
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251
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252 if (op2.bot_left.y() > op1.bot_left.y()) {
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253 op1.bot_left.set_y(op2.bot_left.y());
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254 }
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255
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256 if (op2.top_right.y() < op1.top_right.y()) {
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257 op1.top_right.set_y(op2.top_right.y());
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258 }
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259 } else {
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260 op1.bot_left.set_x(INT16_MAX);
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261 op1.bot_left.set_y(INT16_MAX);
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262 op1.top_right.set_x(-INT16_MAX);
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263 op1.top_right.set_y(-INT16_MAX);
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264 }
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265 return op1;
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266 }
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267
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268 bool TBOX::x_almost_equal(const TBOX &box, int tolerance) const {
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269 return (abs(left() - box.left()) <= tolerance && abs(right() - box.right()) <= tolerance);
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270 }
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271
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272 bool TBOX::almost_equal(const TBOX &box, int tolerance) const {
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273 return (abs(left() - box.left()) <= tolerance && abs(right() - box.right()) <= tolerance &&
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274 abs(top() - box.top()) <= tolerance && abs(bottom() - box.bottom()) <= tolerance);
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275 }
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276
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277 } // namespace tesseract