src/util/rpiece.c

/* Copyright (c) 1992 Regents of the University of California */

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

/*
 * Generate sections of a picture.
 */
 
#include "standard.h"
#include <fcntl.h>
#include "color.h"
#include "view.h"
#include "resolu.h"

                                /* rpict command */
char  *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"};
int  rpargc = 9;
int  rpd[3];
FILE  *torp, *fromrp;
COLR  *scanline;
                                /* our view parameters */
VIEW  ourview = STDVIEW;
double  pixaspect = 1.0;
int  hres = 512, vres = 512, hmult = 2, vmult = 2;
                                /* output file */
char  *outfile = NULL;
int  outfd;
long  scanorig;

char  *progname;
int  verbose = 0;

extern long  lseek(), ftell();


main(argc, argv)
int  argc;
char  *argv[];
{
        register int  i, rval;
        
        progname = argv[0];
        for (i = 1; i < argc; i++) {
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'v':
                                switch (argv[i][2]) {
                                case '\0':      /* verbose option */
                                        verbose = !verbose;
                                        continue;
                                case 'f':       /* view file */
                                        if (viewfile(argv[++i], &ourview, NULL) <= 0) {
                                                fprintf(stderr,
                                        "%s: not a view file\n", argv[i]);
                                                exit(1);
                                        }
                                        continue;
                                default:        /* view option? */
                                        rval = getviewopt(&ourview, argc-i, argv+i);
                                        if (rval >= 0) {
                                                i += rval;
                                                continue;
                                        }
                                        break;
                                }
                                break;
                        case 'p':               /* pixel aspect ratio? */
                                if (argv[i][2] == 'a' && !argv[i][3])
                                        pixaspect = atof(argv[i+1]);
                                break;
                        case 'x':               /* piece x resolution */
                                if (!argv[i][2])
                                        hres = atoi(argv[i+1]);
                                break;
                        case 'y':               /* piece y resolution */
                                if (!argv[i][2])
                                        vres = atoi(argv[i+1]);
                                break;
                        case 'X':               /* horizontal multiplier */
                                if (argv[i][2])
                                        break;
                                hmult = atoi(argv[++i]);
                                continue;
                        case 'Y':               /* vertical multiplier */
                                if (argv[i][2])
                                        break;
                                vmult = atoi(argv[++i]);
                                continue;
                        case 'o':               /* output file */
                                if (argv[i][2])
                                        break;
                                outfile = argv[++i];
                                continue;
                        }
                rpargv[rpargc++] = argv[i];
        }
        rpargv[rpargc] = NULL;
        if (outfile == NULL) {
                fprintf(stderr, "%s: missing output file\n", argv[0]);
                exit(1);
        }
        init(argc, argv);
        rpiece();
        rval = cleanup();
        exit(rval);
}


init(ac, av)                    /* set up output file and start rpict */
int  ac;
char  **av;
{
        extern char  VersionID[];
        char  *err;
        FILE  *fp;
        int  hr, vr;
                                        /* set up view */
        if ((err = setview(&ourview)) != NULL) {
                fprintf(stderr, "%s: %s\n", progname, err);
                exit(1);
        }
        normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres);
                                        /* open output file */
        if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) {
                if ((fp = fdopen(dup(outfd), "w")) == NULL)
                        goto filerr;
                printargs(ac, av, fp);          /* write header */
                fprintf(fp, "SOFTWARE= %s\n", VersionID);
                fputs(VIEWSTR, fp);
                fprintview(&ourview, fp);
                putc('\n', fp);
                if (pixaspect < .99 || pixaspect > 1.01)
                        fputaspect(pixaspect, fp);
                fputformat(COLRFMT, fp);
                putc('\n', fp);
                fprtresolu(hres*hmult, vres*vmult, fp);
        } else if ((outfd = open(outfile, O_RDWR)) >= 0) {
                sleep(30);                      /* wait for header */
                if ((fp = fdopen(dup(outfd), "r+")) == NULL)
                        goto filerr;
                getheader(fp, NULL);            /* skip header */
                if (fscnresolu(&hr, &vr, fp) < 0 ||     /* check resolution */
                                hr != hres*hmult || vr != vres*vmult) {
                        fprintf(stderr, "%s: picture resolution mismatch\n",
                                        outfile);
                        exit(1);
                }
        } else {
                fprintf(stderr, "%s: cannot open\n", outfile);
                exit(1);
        }
        scanorig = ftell(fp);           /* record position of first scanline */
        if (fclose(fp) == -1)           /* done with stream i/o */
                goto filerr;
                                        /* start rpict process */
        if (open_process(rpd, rpargv) <= 0) {
                fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]);
                exit(1);
        }
        if ((fromrp = fdopen(rpd[0], "r")) == NULL ||
                        (torp = fdopen(rpd[1], "w")) == NULL) {
                fprintf(stderr, "%s: cannot open stream to %s\n",
                                progname, rpargv[0]);
                exit(1);
        }
        if ((scanline = (COLR *)malloc(hres*sizeof(COLR))) == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                exit(1);
        }
        return;
filerr:
        fprintf(stderr, "%s: file i/o error\n", outfile);
        exit(1);
}


int
cleanup()                       /* close rpict process and clean up */
{
        register int  rpstat;

        free((char *)scanline);
        fclose(torp);
        fclose(fromrp);
        rpstat = close_process(rpd);
        if (rpstat == -1)
                rpstat = 0;
        return(rpstat);
}


rpiece()                        /* render picture piece by piece */
{
        extern char  *gets(), *strcat();
        VIEW  pview;
        char  buf[48];
        int  xorg, yorg;
        
        while (gets(buf) != NULL) {
                if (sscanf(buf, "%d %d", &xorg, &yorg) != 2) {
                        fprintf(stderr, "%s: input format error\n", progname);
                        exit(1);
                }
                copystruct(&pview, &ourview);   /* compute view for piece */
                switch (ourview.type) {
                case VT_PER:
                        pview.horiz = 2.*180./PI*atan(
                                        tan(PI/180./2.*ourview.horiz)/hmult );
                        pview.vert = 2.*180./PI*atan(
                                        tan(PI/180./2.*ourview.vert)/vmult );
                        break;
                case VT_PAR:
                case VT_ANG:
                        pview.horiz = ourview.horiz / hmult;
                        pview.vert = ourview.vert / vmult;
                        break;
                case VT_HEM:
                        pview.horiz = 2.*180./PI*asin(
                                        sin(PI/180./2.*ourview.horiz)/hmult );
                        pview.vert = 2.*180./PI*asin(
                                        sin(PI/180./2.*ourview.vert)/vmult );
                        break;
                default:
                        fprintf(stderr, "%s: unknown view type '-vt%c'\n",
                                        progname, ourview.type);
                        exit(1);
                }
                pview.hoff += xorg - 0.5*(hmult-1);
                pview.voff += yorg - 0.5*(vmult-1);
                fputs(VIEWSTR, torp);
                fprintview(&pview, torp);
                putc('\n', torp);
                fflush(torp);                   /* assign piece to rpict */
                putpiece(xorg, yorg);           /* place piece in output */
                if (verbose) {                  /* notify caller */
                        strcat(buf, " done\n");
                        writebuf(fileno(stdout), buf, strlen(buf));
                }
        }
}


putpiece(xpos, ypos)            /* get next piece from rpict */
int  xpos, ypos;
{
        int  hr, vr;
        int  y;

        getheader(fromrp, NULL);        /* discard header info. */
        if (fscnresolu(&hr, &vr, fromrp) < 0 || /* check resolution */
                        hr != hres || vr != vres) {
                fprintf(stderr, "%s: resolution mismatch from %s\n",
                                progname, rpargv[0]);
                exit(1);
        }
        for (y = 0; y < vr; y++) {      /* transfer scanlines */
                if (freadcolrs(scanline, hr, fromrp) < 0) {
                        fprintf(stderr, "%s: read error from %s\n",
                                        progname, rpargv[0]);
                        exit(1);
                }
                if ((y == 0 || hmult != 1) && lseek(outfd,
scanorig+((long)((vmult-1-ypos)*vres+y)*hmult*hres+xpos*hres)*sizeof(COLR),
                                0) == -1) {
                        fprintf(stderr, "%s: seek error\n", outfile);
                        exit(1);
                }
                if (writebuf(outfd, (char *)scanline, hr*sizeof(COLR)) !=
                                hr*sizeof(COLR)) {
                        fprintf(stderr, "%s: write error\n", outfile);
                        exit(1);
                }
        }
}
Revision:	2.4
Committed:	Thu Aug 6 18:49:40 1992 UTC (31 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.3:	+3 -3 lines
Log Message:	fixed default setting of -pa
#	User	Rev	Content
1	greg	2.1	/* Copyright (c) 1992 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* Generate sections of a picture.
9			*/
10
11			#include "standard.h"
12			#include <fcntl.h>
13			#include "color.h"
14			#include "view.h"
15			#include "resolu.h"
16
17			/* rpict command */
18	greg	2.4	char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"};
19			int rpargc = 9;
20	greg	2.1	int rpd[3];
21			FILE torp, fromrp;
22			COLR *scanline;
23			/* our view parameters */
24			VIEW ourview = STDVIEW;
25	greg	2.4	double pixaspect = 1.0;
26	greg	2.1	int hres = 512, vres = 512, hmult = 2, vmult = 2;
27			/* output file */
28			char *outfile = NULL;
29			int outfd;
30			long scanorig;
31
32			char *progname;
33			int verbose = 0;
34
35			extern long lseek(), ftell();
36
37
38			main(argc, argv)
39			int argc;
40			char *argv[];
41			{
42			register int i, rval;
43
44			progname = argv[0];
45			for (i = 1; i < argc; i++) {
46			if (argv[i][0] == '-')
47			switch (argv[i][1]) {
48			case 'v':
49			switch (argv[i][2]) {
50			case '\0': /* verbose option */
51			verbose = !verbose;
52			continue;
53			case 'f': /* view file */
54			if (viewfile(argv[++i], &ourview, NULL) <= 0) {
55			fprintf(stderr,
56			"%s: not a view file\n", argv[i]);
57			exit(1);
58			}
59			continue;
60			default: /* view option? */
61			rval = getviewopt(&ourview, argc-i, argv+i);
62			if (rval >= 0) {
63			i += rval;
64			continue;
65			}
66			break;
67			}
68			break;
69			case 'p': /* pixel aspect ratio? */
70			if (argv[i][2] == 'a' && !argv[i][3])
71			pixaspect = atof(argv[i+1]);
72			break;
73			case 'x': /* piece x resolution */
74			if (!argv[i][2])
75			hres = atoi(argv[i+1]);
76			break;
77			case 'y': /* piece y resolution */
78			if (!argv[i][2])
79			vres = atoi(argv[i+1]);
80			break;
81			case 'X': /* horizontal multiplier */
82			if (argv[i][2])
83			break;
84			hmult = atoi(argv[++i]);
85			continue;
86			case 'Y': /* vertical multiplier */
87			if (argv[i][2])
88			break;
89			vmult = atoi(argv[++i]);
90			continue;
91			case 'o': /* output file */
92			if (argv[i][2])
93			break;
94			outfile = argv[++i];
95			continue;
96			}
97			rpargv[rpargc++] = argv[i];
98			}
99			rpargv[rpargc] = NULL;
100			if (outfile == NULL) {
101			fprintf(stderr, "%s: missing output file\n", argv[0]);
102			exit(1);
103			}
104			init(argc, argv);
105			rpiece();
106			rval = cleanup();
107			exit(rval);
108			}
109
110
111			init(ac, av) /* set up output file and start rpict */
112			int ac;
113			char **av;
114			{
115	greg	2.2	extern char VersionID[];
116	greg	2.1	char *err;
117			FILE *fp;
118			int hr, vr;
119			/* set up view */
120			if ((err = setview(&ourview)) != NULL) {
121			fprintf(stderr, "%s: %s\n", progname, err);
122			exit(1);
123			}
124			normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres);
125			/* open output file */
126			if ((outfd = open(outfile, O_WRONLY\|O_CREAT\|O_EXCL, 0666)) >= 0) {
127			if ((fp = fdopen(dup(outfd), "w")) == NULL)
128			goto filerr;
129			printargs(ac, av, fp); /* write header */
130	greg	2.2	fprintf(fp, "SOFTWARE= %s\n", VersionID);
131	greg	2.1	fputs(VIEWSTR, fp);
132			fprintview(&ourview, fp);
133			putc('\n', fp);
134			if (pixaspect < .99 \|\| pixaspect > 1.01)
135			fputaspect(pixaspect, fp);
136			fputformat(COLRFMT, fp);
137			putc('\n', fp);
138			fprtresolu(hreshmult, vresvmult, fp);
139			} else if ((outfd = open(outfile, O_RDWR)) >= 0) {
140			sleep(30); /* wait for header */
141			if ((fp = fdopen(dup(outfd), "r+")) == NULL)
142			goto filerr;
143			getheader(fp, NULL); /* skip header */
144			if (fscnresolu(&hr, &vr, fp) < 0 \|\| /* check resolution */
145			hr != hreshmult \|\| vr != vresvmult) {
146			fprintf(stderr, "%s: picture resolution mismatch\n",
147			outfile);
148			exit(1);
149			}
150			} else {
151			fprintf(stderr, "%s: cannot open\n", outfile);
152			exit(1);
153			}
154			scanorig = ftell(fp); /* record position of first scanline */
155			if (fclose(fp) == -1) /* done with stream i/o */
156			goto filerr;
157			/* start rpict process */
158			if (open_process(rpd, rpargv) <= 0) {
159	greg	2.3	fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]);
160	greg	2.1	exit(1);
161			}
162			if ((fromrp = fdopen(rpd[0], "r")) == NULL \|\|
163			(torp = fdopen(rpd[1], "w")) == NULL) {
164			fprintf(stderr, "%s: cannot open stream to %s\n",
165			progname, rpargv[0]);
166			exit(1);
167			}
168			if ((scanline = (COLR )malloc(hressizeof(COLR))) == NULL) {
169			fprintf(stderr, "%s: out of memory\n", progname);
170			exit(1);
171			}
172			return;
173			filerr:
174			fprintf(stderr, "%s: file i/o error\n", outfile);
175			exit(1);
176			}
177
178
179			int
180			cleanup() /* close rpict process and clean up */
181			{
182			register int rpstat;
183
184			free((char *)scanline);
185			fclose(torp);
186			fclose(fromrp);
187			rpstat = close_process(rpd);
188			if (rpstat == -1)
189			rpstat = 0;
190			return(rpstat);
191			}
192
193
194			rpiece() /* render picture piece by piece */
195			{
196			extern char gets(), strcat();
197			VIEW pview;
198			char buf[48];
199			int xorg, yorg;
200
201			while (gets(buf) != NULL) {
202			if (sscanf(buf, "%d %d", &xorg, &yorg) != 2) {
203			fprintf(stderr, "%s: input format error\n", progname);
204			exit(1);
205			}
206			copystruct(&pview, &ourview); /* compute view for piece */
207			switch (ourview.type) {
208			case VT_PER:
209			pview.horiz = 2.180./PIatan(
210			tan(PI/180./2.*ourview.horiz)/hmult );
211			pview.vert = 2.180./PIatan(
212			tan(PI/180./2.*ourview.vert)/vmult );
213			break;
214			case VT_PAR:
215			case VT_ANG:
216			pview.horiz = ourview.horiz / hmult;
217			pview.vert = ourview.vert / vmult;
218			break;
219			case VT_HEM:
220	greg	2.3	pview.horiz = 2.180./PIasin(
221			sin(PI/180./2.*ourview.horiz)/hmult );
222			pview.vert = 2.180./PIasin(
223			sin(PI/180./2.*ourview.vert)/vmult );
224			break;
225	greg	2.1	default:
226			fprintf(stderr, "%s: unknown view type '-vt%c'\n",
227			progname, ourview.type);
228			exit(1);
229			}
230			pview.hoff += xorg - 0.5*(hmult-1);
231			pview.voff += yorg - 0.5*(vmult-1);
232			fputs(VIEWSTR, torp);
233			fprintview(&pview, torp);
234			putc('\n', torp);
235			fflush(torp); /* assign piece to rpict */
236			putpiece(xorg, yorg); /* place piece in output */
237			if (verbose) { /* notify caller */
238			strcat(buf, " done\n");
239			writebuf(fileno(stdout), buf, strlen(buf));
240			}
241			}
242			}
243
244
245			putpiece(xpos, ypos) /* get next piece from rpict */
246			int xpos, ypos;
247			{
248			int hr, vr;
249			int y;
250
251			getheader(fromrp, NULL); /* discard header info. */
252			if (fscnresolu(&hr, &vr, fromrp) < 0 \|\| /* check resolution */
253			hr != hres \|\| vr != vres) {
254	greg	2.3	fprintf(stderr, "%s: resolution mismatch from %s\n",
255			progname, rpargv[0]);
256	greg	2.1	exit(1);
257			}
258			for (y = 0; y < vr; y++) { /* transfer scanlines */
259			if (freadcolrs(scanline, hr, fromrp) < 0) {
260	greg	2.3	fprintf(stderr, "%s: read error from %s\n",
261			progname, rpargv[0]);
262	greg	2.1	exit(1);
263			}
264			if ((y == 0 \|\| hmult != 1) && lseek(outfd,
265			scanorig+((long)((vmult-1-ypos)vres+y)hmulthres+xposhres)*sizeof(COLR),
266			0) == -1) {
267			fprintf(stderr, "%s: seek error\n", outfile);
268			exit(1);
269			}
270			if (writebuf(outfd, (char )scanline, hrsizeof(COLR)) !=
271			hr*sizeof(COLR)) {
272			fprintf(stderr, "%s: write error\n", outfile);
273			exit(1);
274			}
275			}
276			}