src/px/pcomb.c

/* Copyright (c) 1989 Regents of the University of California */

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

/*
 *  Combine picture files according to calcomp functions.
 *
 *      1/4/89
 */

#include <stdio.h>

#include <errno.h>

#include "color.h"

#include "calcomp.h"

#define MAXINP          16              /* maximum number of input files */

struct {
        char    *name;          /* file name */
        FILE    *fp;            /* stream pointer */
        COLOR   *scan;          /* input scanline */
}       input[MAXINP];                  /* input pictures */

int     nfiles;                         /* number of input files */

char    *vcolin[3] = {"ri", "gi", "bi"};
char    *vcolout[3] = {"ro", "go", "bo"};

#define vxpos           "x"
#define vypos           "y"

int     nowarn = 0;                     /* no warning messages? */

int     xres=0, yres=0;                 /* picture resolution */

int     xpos, ypos;                     /* picture position */


tputs(s)                        /* put out string preceded by a tab */
char    *s;
{
        putchar('\t');
        fputs(s, stdout);
}


main(argc, argv)
int     argc;
char    *argv[];
{
        extern double   l_redin(), l_grnin(), l_bluin();
        int     a;
        
        funset(vcolin[RED], 1, l_redin);
        funset(vcolin[GRN], 1, l_grnin);
        funset(vcolin[BLU], 1, l_bluin);
        
        for (a = 1; a < argc; a++)
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case '\0':
                                goto getfiles;
                        case 'x':
                                xres = atoi(argv[++a]);
                                break;
                        case 'y':
                                yres = atoi(argv[++a]);
                                break;
                        case 'w':
                                nowarn = !nowarn;
                                break;
                        case 'f':
                                fcompile(argv[++a]);
                                break;
                        case 'e':
                                scompile(NULL, argv[++a]);
                                break;
                        default:
                                eputs("Usage: ");
                                eputs(argv[0]);
        eputs(" [-w][-x xres][-y yres][-e expr][-f file] [picture ..]\n");
                                quit(1);
                        }
                else
                        break;
getfiles:
        nfiles = 0;
        for ( ; a < argc; a++) {
                if (nfiles >= MAXINP) {
                        eputs(argv[0]);
                        eputs(": too many picture files\n");
                        quit(1);
                }
                if (argv[a][0] == '-') {
                        input[nfiles].name = "<stdin>";
                        input[nfiles].fp = stdin;
                } else {
                        input[nfiles].name = argv[a];
                        input[nfiles].fp = fopen(argv[a], "r");
                        if (input[nfiles].fp == NULL) {
                                eputs(argv[a]);
                                eputs(": cannot open\n");
                                quit(1);
                        }
                }
                fputs(input[nfiles].name, stdout);
                fputs(":\n", stdout);
                getheader(input[nfiles].fp, tputs);
                if (fscanf(input[nfiles].fp, "-Y %d +X %d\n", &ypos, &xpos) != 2) {
                        eputs(input[nfiles].name);
                        eputs(": bad picture size\n");
                        quit(1);
                }
                if (xres == 0 && yres == 0) {
                        xres = xpos;
                        yres = ypos;
                } else if (xpos != xres || ypos != yres) {
                        eputs(argv[0]);
                        eputs(": resolution mismatch\n");
                        quit(1);
                }
                input[nfiles].scan = (COLOR *)emalloc(xres*sizeof(COLOR));
                nfiles++;
        }
        printargs(argc, argv, stdout);
        putchar('\n');
        printf("-Y %d +X %d\n", yres, xres);
        combine();
        quit(0);
}


combine()                       /* combine pictures */
{
        int     coldef[3];
        COLOR   *scanout;
        register int    i, j;
                                                /* check defined variables */
        for (j = 0; j < 3; j++)
                coldef[j] = vardefined(vcolout[j]);
                                                /* allocate scanline */
        scanout = (COLOR *)emalloc(xres*sizeof(COLOR));
                                                /* combine files */
        for (ypos = yres-1; ypos >= 0; ypos--) {
                for (i = 0; i < nfiles; i++)
                        if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
                                eputs(input[i].name);
                                eputs(": read error\n");
                                quit(1);
                        }
                varset(vypos, (double)ypos);
                for (xpos = 0; xpos < xres; xpos++) {
                        varset(vxpos, (double)xpos);
                        eclock++;
                        for (j = 0; j < 3; j++)
                                if (coldef[j]) {
                                        colval(scanout[xpos],j) = varvalue(vcolout[j]);
                                        if (colval(scanout[xpos],j) < 0.0)
                                                colval(scanout[xpos],j) = 0.0;
                                } else {
                                        colval(scanout[xpos],j) = 0.0;
                                        for (i = 0; i < nfiles; i++)
                                                colval(scanout[xpos],j) += colval(input[i].scan[xpos],j);
                                }
                }
                if (fwritescan(scanout, xres, stdout) < 0) {
                        eputs("write error\n");
                        quit(1);
                }
        }
        efree(scanout);
}


double
colin(fn, ci)                   /* return color value for picture */
register int    fn, ci;
{
        if (fn == 0)
                return((double)nfiles);
        if (fn < 1 || fn > nfiles) {
                errno = EDOM;
                return(0.0);
        }
        return(colval(input[fn-1].scan[xpos],ci));
}


double
l_redin()                       /* get red color */
{
        return(colin((int)(argument(1)+.5), RED));
}


double
l_grnin()                       /* get green color */
{
        return(colin((int)(argument(1)+.5), GRN));
}


double
l_bluin()                       /* get blue color */
{
        return(colin((int)(argument(1)+.5), BLU));
}


wputs(msg)
char    *msg;
{
        if (!nowarn)
                eputs(msg);
}


eputs(msg)
char    *msg;
{
        fputs(msg, stderr);
}


quit(code)
int     code;
{
        exit(code);
}
Revision:	1.2
Committed:	Tue May 9 10:07:04 1989 UTC (36 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+0 -1 lines
Log Message:	Changed default from average to sum
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1989 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* Combine picture files according to calcomp functions.
9			*
10			* 1/4/89
11			*/
12
13			#include <stdio.h>
14
15			#include <errno.h>
16
17			#include "color.h"
18
19			#include "calcomp.h"
20
21			#define MAXINP 16 /* maximum number of input files */
22
23			struct {
24			char name; / file name */
25			FILE fp; / stream pointer */
26			COLOR scan; / input scanline */
27			} input[MAXINP]; /* input pictures */
28
29			int nfiles; /* number of input files */
30
31			char *vcolin[3] = {"ri", "gi", "bi"};
32			char *vcolout[3] = {"ro", "go", "bo"};
33
34			#define vxpos "x"
35			#define vypos "y"
36
37			int nowarn = 0; /* no warning messages? */
38
39			int xres=0, yres=0; /* picture resolution */
40
41			int xpos, ypos; /* picture position */
42
43
44			tputs(s) /* put out string preceded by a tab */
45			char *s;
46			{
47			putchar('\t');
48			fputs(s, stdout);
49			}
50
51
52			main(argc, argv)
53			int argc;
54			char *argv[];
55			{
56			extern double l_redin(), l_grnin(), l_bluin();
57			int a;
58
59			funset(vcolin[RED], 1, l_redin);
60			funset(vcolin[GRN], 1, l_grnin);
61			funset(vcolin[BLU], 1, l_bluin);
62
63			for (a = 1; a < argc; a++)
64			if (argv[a][0] == '-')
65			switch (argv[a][1]) {
66			case '\0':
67			goto getfiles;
68			case 'x':
69			xres = atoi(argv[++a]);
70			break;
71			case 'y':
72			yres = atoi(argv[++a]);
73			break;
74			case 'w':
75			nowarn = !nowarn;
76			break;
77			case 'f':
78			fcompile(argv[++a]);
79			break;
80			case 'e':
81			scompile(NULL, argv[++a]);
82			break;
83			default:
84			eputs("Usage: ");
85			eputs(argv[0]);
86			eputs(" [-w][-x xres][-y yres][-e expr][-f file] [picture ..]\n");
87			quit(1);
88			}
89			else
90			break;
91			getfiles:
92			nfiles = 0;
93			for ( ; a < argc; a++) {
94			if (nfiles >= MAXINP) {
95			eputs(argv[0]);
96			eputs(": too many picture files\n");
97			quit(1);
98			}
99			if (argv[a][0] == '-') {
100			input[nfiles].name = "<stdin>";
101			input[nfiles].fp = stdin;
102			} else {
103			input[nfiles].name = argv[a];
104			input[nfiles].fp = fopen(argv[a], "r");
105			if (input[nfiles].fp == NULL) {
106			eputs(argv[a]);
107			eputs(": cannot open\n");
108			quit(1);
109			}
110			}
111			fputs(input[nfiles].name, stdout);
112			fputs(":\n", stdout);
113			getheader(input[nfiles].fp, tputs);
114			if (fscanf(input[nfiles].fp, "-Y %d +X %d\n", &ypos, &xpos) != 2) {
115			eputs(input[nfiles].name);
116			eputs(": bad picture size\n");
117			quit(1);
118			}
119			if (xres == 0 && yres == 0) {
120			xres = xpos;
121			yres = ypos;
122			} else if (xpos != xres \|\| ypos != yres) {
123			eputs(argv[0]);
124			eputs(": resolution mismatch\n");
125			quit(1);
126			}
127			input[nfiles].scan = (COLOR )emalloc(xressizeof(COLOR));
128			nfiles++;
129			}
130			printargs(argc, argv, stdout);
131			putchar('\n');
132			printf("-Y %d +X %d\n", yres, xres);
133			combine();
134			quit(0);
135			}
136
137
138			combine() /* combine pictures */
139			{
140			int coldef[3];
141			COLOR *scanout;
142			register int i, j;
143			/* check defined variables */
144			for (j = 0; j < 3; j++)
145			coldef[j] = vardefined(vcolout[j]);
146			/* allocate scanline */
147			scanout = (COLOR )emalloc(xressizeof(COLOR));
148			/* combine files */
149			for (ypos = yres-1; ypos >= 0; ypos--) {
150			for (i = 0; i < nfiles; i++)
151			if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
152			eputs(input[i].name);
153			eputs(": read error\n");
154			quit(1);
155			}
156			varset(vypos, (double)ypos);
157			for (xpos = 0; xpos < xres; xpos++) {
158			varset(vxpos, (double)xpos);
159			eclock++;
160			for (j = 0; j < 3; j++)
161			if (coldef[j]) {
162			colval(scanout[xpos],j) = varvalue(vcolout[j]);
163			if (colval(scanout[xpos],j) < 0.0)
164			colval(scanout[xpos],j) = 0.0;
165			} else {
166			colval(scanout[xpos],j) = 0.0;
167			for (i = 0; i < nfiles; i++)
168			colval(scanout[xpos],j) += colval(input[i].scan[xpos],j);
169			}
170			}
171			if (fwritescan(scanout, xres, stdout) < 0) {
172			eputs("write error\n");
173			quit(1);
174			}
175			}
176			efree(scanout);
177			}
178
179
180			double
181			colin(fn, ci) /* return color value for picture */
182			register int fn, ci;
183			{
184			if (fn == 0)
185			return((double)nfiles);
186			if (fn < 1 \|\| fn > nfiles) {
187			errno = EDOM;
188			return(0.0);
189			}
190			return(colval(input[fn-1].scan[xpos],ci));
191			}
192
193
194			double
195			l_redin() /* get red color */
196			{
197			return(colin((int)(argument(1)+.5), RED));
198			}
199
200
201			double
202			l_grnin() /* get green color */
203			{
204			return(colin((int)(argument(1)+.5), GRN));
205			}
206
207
208			double
209			l_bluin() /* get blue color */
210			{
211			return(colin((int)(argument(1)+.5), BLU));
212			}
213
214
215			wputs(msg)
216			char *msg;
217			{
218			if (!nowarn)
219			eputs(msg);
220			}
221
222
223			eputs(msg)
224			char *msg;
225			{
226			fputs(msg, stderr);
227			}
228
229
230			quit(code)
231			int code;
232			{
233			exit(code);
234			}