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vecfuncs.cpp
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/* -*-C-*-
********************************************************************************
*
* File: vecfuncs.cpp (Formerly vecfuncs.c)
* Description: Blob definition
* Author: Mark Seaman, OCR Technology
* Created: Fri Oct 27 15:39:52 1989
* Modified: Tue Jul 9 17:44:12 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 5.1 89/07/27 11:47:50 11:47:50 ray ()
* Added ratings access methods.
* This version ready for independent development.
*/
/*----------------------------------------------------------------------
I n c l u d e s
----------------------------------------------------------------------*/
#include "vecfuncs.h"
#include "blobs.h"
/*----------------------------------------------------------------------
F u n c t i o n s
----------------------------------------------------------------------*/
/**********************************************************************
* direction
*
* Show if the line is going in the positive or negative X direction.
**********************************************************************/
int direction(EDGEPT *point) {
int dir; /** direction to return **/
EDGEPT *prev; /** prev point **/
EDGEPT *next; /** next point **/
dir = 0;
prev = point->prev;
next = point->next;
if (((prev->pos.x <= point->pos.x) &&
(point->pos.x < next->pos.x)) ||
((prev->pos.x < point->pos.x) && (point->pos.x <= next->pos.x)))
dir = 1;
if (((prev->pos.x >= point->pos.x) &&
(point->pos.x > next->pos.x)) ||
((prev->pos.x > point->pos.x) && (point->pos.x >= next->pos.x)))
dir = -1;
return dir;
}