src/px/ttyimage.c

/* Copyright (c) 1986 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  ttyimage.c - program to dump pixel file to dumb terminal.
 *
 *     8/15/85
 */

#include  <stdio.h>

#include  "color.h"


#define  NCOLS          133


main(argc, argv)
int  argc;
char  **argv;
{
        FILE  *input;
        int  xres, yres;
        COLR  scanline[NCOLS];
        char  sbuf[256];
        register int  i, j;
        
        if (argc < 2)
                input = stdin;
        else if ((input = fopen(argv[1], "r")) == NULL) {
                fprintf(stderr, "%s: can't open file \"%s\"\n", argv[0], argv[1]);
                exit(1);
        }
        
                                /* discard header */
        while (fgets(sbuf, sizeof(sbuf), input) != NULL && sbuf[0] != '\n')
                ;
                                /* get picture dimensions */
        if (fgetresolu(&xres, &yres, input) != (YMAJOR|YDECR)) {
                fprintf(stderr, "%s: bad picture size\n", argv[0]);
                exit(1);
        }
        if (xres > NCOLS) {
                fprintf(stderr, "%s: resolution mismatch\n", argv[0]);
                exit(1);
        }
        
        for (i = 0; i < yres; i++) {
                if (freadcolrs(scanline, xres, input) < 0) {
                        fprintf(stderr, "%s: read error\n", argv[0]);
                        exit(1);
                }
                for (j = 0; j < xres; j++)
                        putchar(shade(scanline[j]));
                putchar('\n');
        }

        exit(0);
}


int
shade(clr)                      /* return character for color */
COLR  clr;
{
#define NSHADES  13

        static char  shadech[NSHADES+1] = " .,:;+?%&*$@#";
        COLR  nclr;
        register int  b;

        colr_norm(clr, nclr);
        b = norm_bright(nclr);
        b = b*NSHADES/256;
        return(shadech[b]);

#undef NSHADES
}
Revision:	1.3
Committed:	Fri Oct 20 16:44:35 1989 UTC (34 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+26 -18 lines
Log Message:	eliminated unnecessary use of floating point color
#	User	Rev	Content
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			* ttyimage.c - program to dump pixel file to dumb terminal.
9			*
10			* 8/15/85
11			*/
12
13			#include <stdio.h>
14
15			#include "color.h"
16
17
18			#define NCOLS 133
19
20
21			main(argc, argv)
22			int argc;
23			char **argv;
24			{
25			FILE *input;
26			int xres, yres;
27	greg	1.3	COLR scanline[NCOLS];
28	greg	1.1	char sbuf[256];
29			register int i, j;
30
31			if (argc < 2)
32			input = stdin;
33			else if ((input = fopen(argv[1], "r")) == NULL) {
34	greg	1.3	fprintf(stderr, "%s: can't open file \"%s\"\n", argv[0], argv[1]);
35	greg	1.1	exit(1);
36			}
37
38			/* discard header */
39			while (fgets(sbuf, sizeof(sbuf), input) != NULL && sbuf[0] != '\n')
40			;
41			/* get picture dimensions */
42	greg	1.2	if (fgetresolu(&xres, &yres, input) != (YMAJOR\|YDECR)) {
43	greg	1.3	fprintf(stderr, "%s: bad picture size\n", argv[0]);
44	greg	1.1	exit(1);
45			}
46			if (xres > NCOLS) {
47	greg	1.3	fprintf(stderr, "%s: resolution mismatch\n", argv[0]);
48	greg	1.1	exit(1);
49			}
50
51			for (i = 0; i < yres; i++) {
52	greg	1.3	if (freadcolrs(scanline, xres, input) < 0) {
53			fprintf(stderr, "%s: read error\n", argv[0]);
54	greg	1.1	exit(1);
55			}
56			for (j = 0; j < xres; j++)
57	greg	1.3	putchar(shade(scanline[j]));
58	greg	1.1	putchar('\n');
59			}
60
61			exit(0);
62	greg	1.3	}
63
64
65			int
66			shade(clr) /* return character for color */
67			COLR clr;
68			{
69			#define NSHADES 13
70
71			static char shadech[NSHADES+1] = " .,:;+?%&*$@#";
72			COLR nclr;
73			register int b;
74
75			colr_norm(clr, nclr);
76			b = norm_bright(nclr);
77			b = b*NSHADES/256;
78			return(shadech[b]);
79
80			#undef NSHADES
81	greg	1.1	}