mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-11-30 23:49:05 +08:00
25d0968d09
a heap checker.
SEAM and SPLIT have been begging for a refactor for a *LONG* time.
This change does most of the work of turning them into proper classes:
Moved relevant code into SEAM/SPLIT/TBLOB/EDGEPT etc from global helper functions.
Made the splits full data members of SEAM in an array instead of 3 separate pointers.
This greatly reduces the amount of new/delete happening in the chopper, which is the main goal.
Deleted redundant files: olutil.*, makechop.*
Brought other code into SEAM in order to keep its data members private with only priority having accessors.
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/* -*-C-*-
|
|
********************************************************************************
|
|
*
|
|
* File: outlines.c (Formerly outlines.c)
|
|
* Description: Combinatorial Splitter
|
|
* Author: Mark Seaman, OCR Technology
|
|
* Created: Thu Jul 27 08:59:01 1989
|
|
* Modified: Wed Jul 10 14:56:49 1991 (Mark Seaman) marks@hpgrlt
|
|
* Language: C
|
|
* Package: N/A
|
|
* Status: Experimental (Do Not Distribute)
|
|
*
|
|
* (c) Copyright 1989, Hewlett-Packard Company.
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*
|
|
********************************************************************************
|
|
* Revision 1.2 89/09/15 09:24:41 09:24:41 marks (Mark Seaman)
|
|
* First released version of Combinatorial splitter code
|
|
**/
|
|
/*----------------------------------------------------------------------
|
|
I n c l u d e s
|
|
----------------------------------------------------------------------*/
|
|
#include "outlines.h"
|
|
#include "wordrec.h"
|
|
|
|
#ifdef __UNIX__
|
|
#include <assert.h>
|
|
#endif
|
|
|
|
namespace tesseract {
|
|
/*----------------------------------------------------------------------
|
|
F u n c t i o n s
|
|
----------------------------------------------------------------------*/
|
|
/**********************************************************************
|
|
* near_point
|
|
*
|
|
* Find the point on a line segment that is closest to a point not on
|
|
* the line segment. Return that point in near_pt. Returns whether
|
|
* near_pt was newly created.
|
|
**********************************************************************/
|
|
bool Wordrec::near_point(EDGEPT *point,
|
|
EDGEPT *line_pt_0, EDGEPT *line_pt_1,
|
|
EDGEPT **near_pt) {
|
|
TPOINT p;
|
|
|
|
float slope;
|
|
float intercept;
|
|
|
|
float x0 = line_pt_0->pos.x;
|
|
float x1 = line_pt_1->pos.x;
|
|
float y0 = line_pt_0->pos.y;
|
|
float y1 = line_pt_1->pos.y;
|
|
|
|
if (x0 == x1) {
|
|
/* Handle vertical line */
|
|
p.x = (inT16) x0;
|
|
p.y = point->pos.y;
|
|
}
|
|
else {
|
|
/* Slope and intercept */
|
|
slope = (y0 - y1) / (x0 - x1);
|
|
intercept = y1 - x1 * slope;
|
|
|
|
/* Find perpendicular */
|
|
p.x = (inT16) ((point->pos.x + (point->pos.y - intercept) * slope) /
|
|
(slope * slope + 1));
|
|
p.y = (inT16) (slope * p.x + intercept);
|
|
}
|
|
|
|
if (is_on_line (p, line_pt_0->pos, line_pt_1->pos) &&
|
|
(!same_point (p, line_pt_0->pos)) && (!same_point (p, line_pt_1->pos))) {
|
|
/* Intersection on line */
|
|
*near_pt = make_edgept(p.x, p.y, line_pt_1, line_pt_0);
|
|
return true;
|
|
} else { /* Intersection not on line */
|
|
*near_pt = closest(point, line_pt_0, line_pt_1);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
} // namespace tesseract
|