#include "mfcpch.h"
#include "vecfuncs.h"
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int direction | ( | EDGEPT * | point | ) |
Show if the line is going in the positive or negative X direction.
direction to return
prev point
next point
Definition at line 34 of file vecfuncs.cpp.
References edgeptstruct::next, edgeptstruct::pos, edgeptstruct::prev, and TPOINT::x.
Referenced by add_new_edge(), new_max_point(), new_min_point(), print_dawg_node(), and prioritize_points().
00034 { 00035 int dir; 00036 EDGEPT *prev; 00037 EDGEPT *next; 00039 dir = 0; 00040 prev = point->prev; 00041 next = point->next; 00042 00043 if (((prev->pos.x <= point->pos.x) && 00044 (point->pos.x < next->pos.x)) || 00045 ((prev->pos.x < point->pos.x) && (point->pos.x <= next->pos.x))) 00046 dir = 1; 00047 00048 if (((prev->pos.x >= point->pos.x) && 00049 (point->pos.x > next->pos.x)) || 00050 ((prev->pos.x > point->pos.x) && (point->pos.x >= next->pos.x))) 00051 dir = -1; 00052 00053 return dir; 00054 }