tesseract/wordrec/olutil.h

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/* -*-C-*-
********************************************************************************
*
* File: olutil.h (Formerly olutil.h)
* Description:
* Author: Mark Seaman, SW Productivity
* Created: Fri Oct 16 14:37:00 1987
* Modified: Wed Jul 10 14:21:55 1991 (Mark Seaman) marks@hpgrlt
* Language: C
* Package: N/A
* Status: Reusable Software Component
*
* (c) Copyright 1987, 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.
*
*********************************************************************************/
#ifndef OLUTIL_H
#define OLUTIL_H
/*----------------------------------------------------------------------
I n c l u d e s
----------------------------------------------------------------------*/
#include "tessclas.h"
#include "general.h"
/*----------------------------------------------------------------------
M a c r o s
----------------------------------------------------------------------*/
/**********************************************************************
* is_inside_angle
*
* Return true if the edgept supplied as input is an inside angle. This
* is determined by the angular change of the vectors from point to
* point.
**********************************************************************/
#define is_inside_angle(pt) \
(angle_change ((pt)->prev, (pt), (pt)->next) < inside_angle)
/**********************************************************************
* point_in_outline
*
* Check to see if this point falls within the bounding box of this
* outline. Note that this does not totally ensure that the edge
* point falls on this outline.
**********************************************************************/
#define point_in_outline(p,o) \
((p)->pos.x >= (o)->topleft.x && \
(p)->pos.y <= (o)->topleft.y && \
(p)->pos.x <= (o)->botright.x && \
(p)->pos.y >= (o)->botright.y) \
/**********************************************************************
* same_outline_bounds
*
* Return TRUE if these two outlines have the same bounds.
**********************************************************************/
#define same_outline_bounds(outline,other_outline) \
(outline->topleft.x == other_outline->topleft.x && \
outline->topleft.y == other_outline->topleft.y && \
outline->botright.x == other_outline->botright.x && \
outline->botright.y == other_outline->botright.y) \
/**********************************************************************
* weighted_edgept_dist
*
* Return the distance (squared) between the two edge points.
**********************************************************************/
#define weighted_edgept_dist(p1,p2,x_y_weight) \
(((p1)->pos.x - (p2)->pos.x) * \
((p1)->pos.x - (p2)->pos.x) * x_y_weight + \
((p1)->pos.y - (p2)->pos.y) * \
((p1)->pos.y - (p2)->pos.y))
/*----------------------------------------------------------------------
F u n c t i o n s
----------------------------------------------------------------------*/
void check_outline_mem();
void correct_blob_order(TBLOB *blob1, TBLOB *blob2);
void eliminate_duplicate_outlines(TBLOB *blob);
void setup_outline(TESSLINE *outline);
void setup_blob_outlines(TBLOB *blob);
/*
#if defined(__STDC__) || defined(__cplusplus)
# define _ARGS(s) s
#else
# define _ARGS(s) ()
#endif*/
/* olutil.c
void check_outline_mem
_ARGS((void));
void correct_blob_order
_ARGS((BLOB *blob1,
BLOB *blob2));
void eliminate_duplicate_outlines
_ARGS((BLOB *blob));
void setup_outline
_ARGS((TESSLINE *outline));
void setup_blob_outlines
_ARGS((BLOB *blob));
#undef _ARGS
*/
#endif