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64 lines
2.4 KiB
C++
64 lines
2.4 KiB
C++
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/* -*-C-*-
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********************************************************************************
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*
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* File: vecfuncs.c (Formerly vecfuncs.c)
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* Description: Blob definition
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* Author: Mark Seaman, OCR Technology
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* Created: Fri Oct 27 15:39:52 1989
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* Modified: Tue Jul 9 17:44:12 1991 (Mark Seaman) marks@hpgrlt
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* Language: C
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* Package: N/A
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* Status: Experimental (Do Not Distribute)
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*
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* (c) Copyright 1989, Hewlett-Packard Company.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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********************************************************************************
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* Revision 5.1 89/07/27 11:47:50 11:47:50 ray ()
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* Added ratings acces methods.
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* This version ready for independent development.
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*/
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/*----------------------------------------------------------------------
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I n c l u d e s
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----------------------------------------------------------------------*/
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#include "mfcpch.h"
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#include "vecfuncs.h"
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/*----------------------------------------------------------------------
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F u n c t i o n s
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----------------------------------------------------------------------*/
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/**********************************************************************
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* direction
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*
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* Show if the line is going in the positive or negative X direction.
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**********************************************************************/
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int direction(EDGEPT *point) {
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int dir; /** direction to return **/
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EDGEPT *prev; /** prev point **/
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EDGEPT *next; /** next point **/
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dir = 0;
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prev = point->prev;
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next = point->next;
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if (((prev->pos.x <= point->pos.x) &&
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(point->pos.x < next->pos.x)) ||
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((prev->pos.x < point->pos.x) && (point->pos.x <= next->pos.x)))
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dir = 1;
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if (((prev->pos.x >= point->pos.x) &&
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(point->pos.x > next->pos.x)) ||
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((prev->pos.x > point->pos.x) && (point->pos.x >= next->pos.x)))
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dir = -1;
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return dir;
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}
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