| 1 |
greg |
1.1 |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
|
|
|
| 3 |
|
|
#ifndef lint |
| 4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
|
|
#endif |
| 6 |
|
|
|
| 7 |
|
|
/* |
| 8 |
|
|
* plocate.c - routine to locate 3D vector w.r.t. box. |
| 9 |
|
|
* |
| 10 |
|
|
* 8/28/85 |
| 11 |
|
|
*/ |
| 12 |
|
|
|
| 13 |
greg |
1.2 |
#include "fvect.h" |
| 14 |
|
|
|
| 15 |
greg |
1.1 |
#include "plocate.h" |
| 16 |
|
|
|
| 17 |
|
|
|
| 18 |
|
|
int |
| 19 |
|
|
plocate(p, min, max) /* return location of p w.r.t. min & max */ |
| 20 |
greg |
1.2 |
register FVECT p; |
| 21 |
|
|
FVECT min, max; |
| 22 |
greg |
1.1 |
{ |
| 23 |
|
|
register int loc = 0; |
| 24 |
|
|
|
| 25 |
|
|
if (p[0] < min[0] - EPSILON) |
| 26 |
|
|
loc |= XPOS & BELOW; |
| 27 |
|
|
else if (p[0] > max[0] + EPSILON) |
| 28 |
|
|
loc |= XPOS & ABOVE; |
| 29 |
|
|
if (p[1] < min[1] - EPSILON) |
| 30 |
|
|
loc |= YPOS & BELOW; |
| 31 |
|
|
else if (p[1] > max[1] + EPSILON) |
| 32 |
|
|
loc |= YPOS & ABOVE; |
| 33 |
|
|
if (p[2] < min[2] - EPSILON) |
| 34 |
|
|
loc |= ZPOS & BELOW; |
| 35 |
|
|
else if (p[2] > max[2] + EPSILON) |
| 36 |
|
|
loc |= ZPOS & ABOVE; |
| 37 |
|
|
|
| 38 |
|
|
return(loc); |
| 39 |
|
|
} |
