tesseract/ccstruct/vecfuncs.h
Ray Smith 25d0968d09 Major refactor to improve speed on difficut images, especially when running
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.
2015-05-12 14:59:14 -07:00

79 lines
2.6 KiB
C

/* -*-C-*-
********************************************************************************
*
* File: vecfuncs.h (Formerly vecfuncs.h)
* Description: Vector calculations
* Author: Mark Seaman, OCR Technology
* Created: Wed Dec 20 09:37:18 1989
* Modified: Tue Jul 9 17:44:37 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.
*
*********************************************************************************/
#ifndef VECFUNCS_H
#define VECFUNCS_H
#include <math.h>
struct EDGEPT;
/*----------------------------------------------------------------------
M a c r o s
----------------------------------------------------------------------*/
/**********************************************************************
* point_diff
*
* Return the difference from point (p1) to point (p2). Put the value
* into point (p).
**********************************************************************/
#define point_diff(p,p1,p2) \
((p).x = (p1).x - (p2).x, \
(p).y = (p1).y - (p2).y)
/**********************************************************************
* CROSS
*
* cross product
**********************************************************************/
#define CROSS(a,b) \
((a).x * (b).y - (a).y * (b).x)
/**********************************************************************
* SCALAR
*
* scalar vector product
**********************************************************************/
#define SCALAR(a,b) \
((a).x * (b).x + (a).y * (b).y)
/**********************************************************************
* LENGTH
*
* length of vector
**********************************************************************/
#define LENGTH(a) \
((a).x * (a).x + (a).y * (a).y)
/*----------------------------------------------------------------------
F u n c t i o n s
----------------------------------------------------------------------*/
int direction(EDGEPT *point);
#endif