--- ray/src/px/pfilt.c	1996/05/22 10:42:08	2.18
+++ ray/src/px/pfilt.c	2003/02/22 02:07:27	2.21
@@ -1,9 +1,6 @@
-/* Copyright (c) 1996 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: pfilt.c,v 2.21 2003/02/22 02:07:27 greg Exp $";
 #endif
-
 /*
  *  pfilt.c - program to post-process picture file.
  *
@@ -19,8 +16,6 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include  "view.h"
 
-#include  "resolu.h"
-
 #include  "paths.h"
 
 extern float  *matchlamp();
@@ -92,8 +87,7 @@ main(argc, argv)
 int  argc;
 char  **argv;
 {
-	extern long  ftell();
-	extern int  quit(), headline();
+	extern int  headline();
 	FILE  *fin;
 	float  *lampcolor;
 	char  *lamptype = NULL;
@@ -205,7 +199,7 @@ char  **argv;
 			case 'm':
 				thresh = atof(argv[++i]);
 				if (rad <= FTINY)
-					rad = 1.0;
+					rad = 0.6;
 				break;
 			case 'b':
 				rad = thresh = 0.0;
@@ -332,6 +326,7 @@ COLOR  clr;
 double	(*ourbright)() = rgb_bright;
 
 
+int
 headline(s)				/* process line from header */
 char  *s;
 {
@@ -352,6 +347,7 @@ char  *s;
 			wrongformat = !globmatch(PICFMT, fmt);
 	} else if (isview(s) && sscanview(&ourview, s) > 0)
 		gotview++;
+	return(0);
 }
 
 
@@ -399,7 +395,7 @@ FILE  *in;
 		}
 		pass1scan(scan, i);
 	}
-	free((char *)scan);
+	free((void *)scan);
 }
 
 
@@ -414,7 +410,7 @@ FILE  *in;
 	scan2init();
 	yread = 0;
 	for (r = 0; r < nrows; r++) {
-		ycent = (long)r*yres/nrows;
+		ycent = (r+.5)*yres/nrows;
 		while (yread <= ycent+yrad) {
 			if (yread < yres) {
 				if (freadscan(scanin[yread%barsize],
@@ -431,7 +427,7 @@ FILE  *in;
 		if (obarsize > 0)
 			scan2sync(r);
 		for (c = 0; c < ncols; c++) {
-			xcent = (long)c*xres/ncols;
+			xcent = (c+.5)*xres/ncols;
 			if (thresh > FTINY)
 				dothresh(xcent, ycent, c, r);
 			else if (rad > FTINY)
@@ -540,9 +536,9 @@ int  r;
 	register int  c;
 					/* average input scanlines */
 	while (nextrow <= r+orad && nextrow < nrows) {
-		ybot = (long)nextrow*yres/nrows;
+		ybot = (nextrow+.5)*yres/nrows;
 		for (c = 0; c < ncols; c++) {
-			dobox(ctmp, (int)((long)c*xres/ncols),ybot, c,nextrow);
+			dobox(ctmp, (int)((c+.5)*xres/ncols),ybot, c,nextrow);
 			greybar[nextrow%obarsize][c] = (*ourbright)(ctmp);
 		}
 					/* and zero output scanline */
@@ -571,6 +567,7 @@ scan2flush()			/* flush output buffer */
 }
 
 
+void
 quit(code)		/* remove temporary file and exit */
 int  code;
 {