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 */
        COLOR   coef;           /* coefficient */
}       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(), atof();
        double  f;
        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':
                        case 's':
                        case 'c':
                                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:
                                goto usage;
                        }
                else
                        break;
getfiles:
        for (nfiles = 0; nfiles < MAXINP; nfiles++)
                setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
        nfiles = 0;
        for ( ; a < argc; a++) {
                if (nfiles >= MAXINP) {
                        eputs(argv[0]);
                        eputs(": too many picture files\n");
                        quit(1);
                }
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case '\0':
                                input[nfiles].name = "<stdin>";
                                input[nfiles].fp = stdin;
                                break;
                        case 's':
                                f = atof(argv[++a]);
                                scalecolor(input[nfiles].coef, f);
                                continue;
                        case 'c':
                                colval(input[nfiles].coef,RED)*=atof(argv[++a]);
                                colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
                                colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
                                continue;
                        default:
                                goto usage;
                        }
                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);
usage:
        eputs("Usage: ");
        eputs(argv[0]);
eputs(" [-w][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] picture ..]\n");
        quit(1);
}


combine()                       /* combine pictures */
{
        EPNODE  *coldef[3];
        COLOR   *scanout;
        register int    i, j;
                                                /* check defined variables */
        for (j = 0; j < 3; j++) {
                if (vardefined(vcolout[j]))
                        coldef[j] = eparse(vcolout[j]);
                else
                        coldef[j] = NULL;
        }
                                                /* 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] != NULL) {
                                        colval(scanout[xpos],j) =
                                                evalue(coldef[j]);
                                } else {
                                        colval(scanout[xpos],j) = 0.0;
                                        for (i = 0; i < nfiles; i++)
                                                colval(scanout[xpos],j) +=
                                                colval(input[i].coef,j) *
                                                colval(input[i].scan[xpos],j);
                                }
                                if (colval(scanout[xpos],j) < 0.0)
                                        colval(scanout[xpos],j) = 0.0;
                        }
                }
                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:	1.4
Committed:	Tue Jul 11 18:05:05 1989 UTC (34 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+13 -8 lines
Log Message:	Changed variable evaluation to use pointer
#	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	greg	1.3	COLOR coef; /* coefficient */
28	greg	1.1	} input[MAXINP]; /* input pictures */
29
30			int nfiles; /* number of input files */
31
32			char *vcolin[3] = {"ri", "gi", "bi"};
33			char *vcolout[3] = {"ro", "go", "bo"};
34
35			#define vxpos "x"
36			#define vypos "y"
37
38			int nowarn = 0; /* no warning messages? */
39
40			int xres=0, yres=0; /* picture resolution */
41
42			int xpos, ypos; /* picture position */
43
44
45			tputs(s) /* put out string preceded by a tab */
46			char *s;
47			{
48			putchar('\t');
49			fputs(s, stdout);
50			}
51
52
53			main(argc, argv)
54			int argc;
55			char *argv[];
56			{
57	greg	1.3	extern double l_redin(), l_grnin(), l_bluin(), atof();
58			double f;
59	greg	1.1	int a;
60
61			funset(vcolin[RED], 1, l_redin);
62			funset(vcolin[GRN], 1, l_grnin);
63			funset(vcolin[BLU], 1, l_bluin);
64
65			for (a = 1; a < argc; a++)
66			if (argv[a][0] == '-')
67			switch (argv[a][1]) {
68			case '\0':
69	greg	1.3	case 's':
70			case 'c':
71	greg	1.1	goto getfiles;
72			case 'x':
73			xres = atoi(argv[++a]);
74			break;
75			case 'y':
76			yres = atoi(argv[++a]);
77			break;
78			case 'w':
79			nowarn = !nowarn;
80			break;
81			case 'f':
82			fcompile(argv[++a]);
83			break;
84			case 'e':
85			scompile(NULL, argv[++a]);
86			break;
87			default:
88	greg	1.3	goto usage;
89	greg	1.1	}
90			else
91			break;
92			getfiles:
93	greg	1.3	for (nfiles = 0; nfiles < MAXINP; nfiles++)
94			setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
95	greg	1.1	nfiles = 0;
96			for ( ; a < argc; a++) {
97			if (nfiles >= MAXINP) {
98			eputs(argv[0]);
99			eputs(": too many picture files\n");
100			quit(1);
101			}
102	greg	1.3	if (argv[a][0] == '-')
103			switch (argv[a][1]) {
104			case '\0':
105			input[nfiles].name = "<stdin>";
106			input[nfiles].fp = stdin;
107			break;
108			case 's':
109			f = atof(argv[++a]);
110			scalecolor(input[nfiles].coef, f);
111			continue;
112			case 'c':
113			colval(input[nfiles].coef,RED)*=atof(argv[++a]);
114			colval(input[nfiles].coef,GRN)*=atof(argv[++a]);
115			colval(input[nfiles].coef,BLU)*=atof(argv[++a]);
116			continue;
117			default:
118			goto usage;
119			}
120			else {
121	greg	1.1	input[nfiles].name = argv[a];
122			input[nfiles].fp = fopen(argv[a], "r");
123			if (input[nfiles].fp == NULL) {
124			eputs(argv[a]);
125			eputs(": cannot open\n");
126			quit(1);
127			}
128			}
129			fputs(input[nfiles].name, stdout);
130			fputs(":\n", stdout);
131			getheader(input[nfiles].fp, tputs);
132			if (fscanf(input[nfiles].fp, "-Y %d +X %d\n", &ypos, &xpos) != 2) {
133			eputs(input[nfiles].name);
134			eputs(": bad picture size\n");
135			quit(1);
136			}
137			if (xres == 0 && yres == 0) {
138			xres = xpos;
139			yres = ypos;
140			} else if (xpos != xres \|\| ypos != yres) {
141			eputs(argv[0]);
142			eputs(": resolution mismatch\n");
143			quit(1);
144			}
145			input[nfiles].scan = (COLOR )emalloc(xressizeof(COLOR));
146			nfiles++;
147			}
148			printargs(argc, argv, stdout);
149			putchar('\n');
150			printf("-Y %d +X %d\n", yres, xres);
151			combine();
152			quit(0);
153	greg	1.3	usage:
154			eputs("Usage: ");
155			eputs(argv[0]);
156			eputs(" [-w][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] picture ..]\n");
157			quit(1);
158	greg	1.1	}
159
160
161			combine() /* combine pictures */
162			{
163	greg	1.4	EPNODE *coldef[3];
164	greg	1.1	COLOR *scanout;
165			register int i, j;
166			/* check defined variables */
167	greg	1.4	for (j = 0; j < 3; j++) {
168			if (vardefined(vcolout[j]))
169			coldef[j] = eparse(vcolout[j]);
170			else
171			coldef[j] = NULL;
172			}
173	greg	1.1	/* allocate scanline */
174			scanout = (COLOR )emalloc(xressizeof(COLOR));
175			/* combine files */
176			for (ypos = yres-1; ypos >= 0; ypos--) {
177			for (i = 0; i < nfiles; i++)
178			if (freadscan(input[i].scan, xres, input[i].fp) < 0) {
179			eputs(input[i].name);
180			eputs(": read error\n");
181			quit(1);
182			}
183			varset(vypos, (double)ypos);
184			for (xpos = 0; xpos < xres; xpos++) {
185			varset(vxpos, (double)xpos);
186			eclock++;
187	greg	1.4	for (j = 0; j < 3; j++) {
188			if (coldef[j] != NULL) {
189	greg	1.3	colval(scanout[xpos],j) =
190	greg	1.4	evalue(coldef[j]);
191	greg	1.1	} else {
192			colval(scanout[xpos],j) = 0.0;
193			for (i = 0; i < nfiles; i++)
194	greg	1.3	colval(scanout[xpos],j) +=
195			colval(input[i].coef,j) *
196			colval(input[i].scan[xpos],j);
197	greg	1.1	}
198	greg	1.4	if (colval(scanout[xpos],j) < 0.0)
199			colval(scanout[xpos],j) = 0.0;
200			}
201	greg	1.1	}
202			if (fwritescan(scanout, xres, stdout) < 0) {
203			eputs("write error\n");
204			quit(1);
205			}
206			}
207			efree(scanout);
208			}
209
210
211			double
212			colin(fn, ci) /* return color value for picture */
213			register int fn, ci;
214			{
215			if (fn == 0)
216			return((double)nfiles);
217			if (fn < 1 \|\| fn > nfiles) {
218			errno = EDOM;
219			return(0.0);
220			}
221			return(colval(input[fn-1].scan[xpos],ci));
222			}
223
224
225			double
226			l_redin() /* get red color */
227			{
228			return(colin((int)(argument(1)+.5), RED));
229			}
230
231
232			double
233			l_grnin() /* get green color */
234			{
235			return(colin((int)(argument(1)+.5), GRN));
236			}
237
238
239			double
240			l_bluin() /* get blue color */
241			{
242			return(colin((int)(argument(1)+.5), BLU));
243			}
244
245
246			wputs(msg)
247			char *msg;
248			{
249			if (!nowarn)
250			eputs(msg);
251			}
252
253
254			eputs(msg)
255			char *msg;
256			{
257			fputs(msg, stderr);
258			}
259
260
261			quit(code)
262			int code;
263			{
264			exit(code);
265			}