Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccstruct/split.h @ 21:2f43e400f144

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Provide an "all" target to build both the sdist and the wheel
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 10:28:53 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /******************************************************************************
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2 *
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3 * File: split.h
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4 * Author: Mark Seaman, SW Productivity
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5 * Status: Reusable Software Component
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6 *
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7 * (c) Copyright 1987, Hewlett-Packard Company.
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8 ** Licensed under the Apache License, Version 2.0 (the "License");
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9 ** you may not use this file except in compliance with the License.
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10 ** You may obtain a copy of the License at
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11 ** http://www.apache.org/licenses/LICENSE-2.0
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12 ** Unless required by applicable law or agreed to in writing, software
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13 ** distributed under the License is distributed on an "AS IS" BASIS,
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14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 ** See the License for the specific language governing permissions and
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16 ** limitations under the License.
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17 *
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18 *****************************************************************************/
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19 #ifndef SPLIT_H
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20 #define SPLIT_H
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21
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22 #include "blobs.h" // for EDGEPT, TBLOB, TESSLINE
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23 #include "params.h" // for BOOL_VAR_H, BoolParam
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24 #include "rect.h" // for TBOX
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26 namespace tesseract {
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28 class ScrollView;
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30 /*----------------------------------------------------------------------
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31 T y p e s
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32 ----------------------------------------------------------------------*/
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33 struct SPLIT {
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34 SPLIT() : point1(nullptr), point2(nullptr) {}
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35 SPLIT(EDGEPT *pt1, EDGEPT *pt2) : point1(pt1), point2(pt2) {}
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37 // Returns the bounding box of all the points in the split.
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38 TBOX bounding_box() const {
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39 return TBOX(std::min(point1->pos.x, point2->pos.x), std::min(point1->pos.y, point2->pos.y),
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40 std::max(point1->pos.x, point2->pos.x), std::max(point1->pos.y, point2->pos.y));
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41 }
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42
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43 // Returns the bounding box of the outline from point1 to point2.
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44 TBOX Box12() const {
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45 return point1->SegmentBox(point2);
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46 }
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47 // Returns the bounding box of the outline from point1 to point1.
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48 TBOX Box21() const {
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49 return point2->SegmentBox(point1);
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50 }
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51 // Returns the bounding box of the out
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53 // Hides the SPLIT so the outlines appear not to be cut by it.
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54 void Hide() const;
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55 // Undoes hide, so the outlines are cut by the SPLIT.
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56 void Reveal() const;
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57
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58 // Returns true if the given EDGEPT is used by this SPLIT, checking only
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59 // the EDGEPT pointer, not the coordinates.
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60 bool UsesPoint(const EDGEPT *point) const {
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61 return point1 == point || point2 == point;
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62 }
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63 // Returns true if the other SPLIT has any position shared with *this.
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64 bool SharesPosition(const SPLIT &other) const {
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65 return point1->EqualPos(*other.point1) || point1->EqualPos(*other.point2) ||
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66 point2->EqualPos(*other.point1) || point2->EqualPos(*other.point2);
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67 }
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68 // Returns true if both points are contained within the blob.
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69 bool ContainedByBlob(const TBLOB &blob) const {
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70 return blob.Contains(point1->pos) && blob.Contains(point2->pos);
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71 }
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72 // Returns true if both points are contained within the outline.
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73 bool ContainedByOutline(const TESSLINE &outline) const {
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74 return outline.Contains(point1->pos) && outline.Contains(point2->pos);
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75 }
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76 // Compute a split priority based on the bounding boxes of the parts.
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77 // The arguments here are config parameters defined in Wordrec. Add chop_
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78 // to the beginning of the name.
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79 float FullPriority(int xmin, int xmax, double overlap_knob, int centered_maxwidth,
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80 double center_knob, double width_change_knob) const;
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81 // Returns true if *this SPLIT appears OK in the sense that it does not cross
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82 // any outlines and does not chop off any ridiculously small pieces.
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83 bool IsHealthy(const TBLOB &blob, int min_points, int min_area) const;
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84 // Returns true if the split generates a small chunk in terms of either area
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85 // or number of points.
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86 bool IsLittleChunk(int min_points, int min_area) const;
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87
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88 void Print() const;
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89 #ifndef GRAPHICS_DISABLED
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90 // Draws the split in the given window.
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91 void Mark(ScrollView *window) const;
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92 #endif
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93
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94 // Creates two outlines out of one by splitting the original one in half.
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95 // Inserts the resulting outlines into the given list.
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96 void SplitOutlineList(TESSLINE *outlines) const;
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97 // Makes a split between these two edge points, but does not affect the
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98 // outlines to which they belong.
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99 void SplitOutline() const;
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100 // Undoes the effect of SplitOutlineList, correcting the outlines for undoing
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101 // the split, but possibly leaving some duplicate outlines.
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102 void UnsplitOutlineList(TBLOB *blob) const;
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103 // Removes the split that was put between these two points.
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104 void UnsplitOutlines() const;
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105
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106 EDGEPT *point1;
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107 EDGEPT *point2;
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108 };
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109
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110 /*----------------------------------------------------------------------
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111 V a r i a b l e s
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112 ----------------------------------------------------------------------*/
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113
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114 extern BOOL_VAR_H(wordrec_display_splits);
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115
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116 /*----------------------------------------------------------------------
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117 F u n c t i o n s
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118 ----------------------------------------------------------------------*/
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119 EDGEPT *make_edgept(TDimension x, TDimension y, EDGEPT *next, EDGEPT *prev);
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120
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121 void remove_edgept(EDGEPT *point);
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122
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123 } // namespace tesseract
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124
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125 #endif