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root/Development/ray/src/px/pinterp.c

Comparing ray/src/px/pinterp.c (file contents):
Revision 1.2 by greg, Tue Dec 12 11:21:25 1989 UTC vs.
Revision 1.3 by greg, Tue Dec 12 15:53:10 1989 UTC

#	Line 17 | Line 17 | static char SCCSid[] = "$SunId$ LBL";
17		#define pscan(y)        (ourpict+(y)*ourview.hresolu)
18		#define zscan(y)        (ourzbuf+(y)*ourview.hresolu)
19
20	+	#define ABS(x)          ((x)>0?(x):-(x))
21	+
22		VIEW    ourview = STDVIEW(512);         /* desired view */
23
24		double  zeps = 0.001;                   /* allowed z epsilon */
#	Line 293 | Line 295 | fillpicture()                          /* fill in empty spaces */
295		copycolr(pscan(y)[i],pscan(yback[i])[i]);
296		} else {
297		while (++i < x)
298	<	if (yback[i] < 0 ||
299	<	zscan(yback[i])[i] < zscan(y)[xback])
298	>	if (yback[i] < 0
299	>	|| ABS(i-xback) <= 1 || (ABS(y-yback[i]) > 1
300	>	&& zscan(yback[i])[i] < zscan(y)[xback]))
301		copycolr(pscan(y)[i],pscan(y)[xback]);
302		else
303		copycolr(pscan(y)[i],pscan(yback[i])[i]);

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