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", };
int  rpargc = 7;
int  rpd[3];
FILE  *torp, *fromrp;
COLR  *scanline;
                                /* our view parameters */
VIEW  ourview = STDVIEW;
double  pixaspect = 0.0;
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;
{
        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 */
                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\n", 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:
                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 rpict\n",
                                progname);
                exit(1);
        }
        for (y = 0; y < vr; y++) {      /* transfer scanlines */
                if (freadcolrs(scanline, hr, fromrp) < 0) {
                        fprintf(stderr, "%s: read error from rpict\n",
                                        progname);
                        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:	2.1
Committed:	Thu Aug 6 16:45:01 1992 UTC (31 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Log Message:	Initial revision
#	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			char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", };
19			int rpargc = 7;
20			int rpd[3];
21			FILE torp, fromrp;
22			COLR *scanline;
23			/* our view parameters */
24			VIEW ourview = STDVIEW;
25			double pixaspect = 0.0;
26			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			char *err;
116			FILE *fp;
117			int hr, vr;
118			/* set up view */
119			if ((err = setview(&ourview)) != NULL) {
120			fprintf(stderr, "%s: %s\n", progname, err);
121			exit(1);
122			}
123			normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres);
124			/* open output file */
125			if ((outfd = open(outfile, O_WRONLY\|O_CREAT\|O_EXCL, 0666)) >= 0) {
126			if ((fp = fdopen(dup(outfd), "w")) == NULL)
127			goto filerr;
128			printargs(ac, av, fp); /* write header */
129			fputs(VIEWSTR, fp);
130			fprintview(&ourview, fp);
131			putc('\n', fp);
132			if (pixaspect < .99 \|\| pixaspect > 1.01)
133			fputaspect(pixaspect, fp);
134			fputformat(COLRFMT, fp);
135			putc('\n', fp);
136			fprtresolu(hreshmult, vresvmult, fp);
137			} else if ((outfd = open(outfile, O_RDWR)) >= 0) {
138			sleep(30); /* wait for header */
139			if ((fp = fdopen(dup(outfd), "r+")) == NULL)
140			goto filerr;
141			getheader(fp, NULL); /* skip header */
142			if (fscnresolu(&hr, &vr, fp) < 0 \|\| /* check resolution */
143			hr != hreshmult \|\| vr != vresvmult) {
144			fprintf(stderr, "%s: picture resolution mismatch\n",
145			outfile);
146			exit(1);
147			}
148			} else {
149			fprintf(stderr, "%s: cannot open\n", outfile);
150			exit(1);
151			}
152			scanorig = ftell(fp); /* record position of first scanline */
153			if (fclose(fp) == -1) /* done with stream i/o */
154			goto filerr;
155			/* start rpict process */
156			if (open_process(rpd, rpargv) <= 0) {
157			fprintf(stderr, "%s: cannot start\n", rpargv[0]);
158			exit(1);
159			}
160			if ((fromrp = fdopen(rpd[0], "r")) == NULL \|\|
161			(torp = fdopen(rpd[1], "w")) == NULL) {
162			fprintf(stderr, "%s: cannot open stream to %s\n",
163			progname, rpargv[0]);
164			exit(1);
165			}
166			if ((scanline = (COLR )malloc(hressizeof(COLR))) == NULL) {
167			fprintf(stderr, "%s: out of memory\n", progname);
168			exit(1);
169			}
170			return;
171			filerr:
172			fprintf(stderr, "%s: file i/o error\n", outfile);
173			exit(1);
174			}
175
176
177			int
178			cleanup() /* close rpict process and clean up */
179			{
180			register int rpstat;
181
182			free((char *)scanline);
183			fclose(torp);
184			fclose(fromrp);
185			rpstat = close_process(rpd);
186			if (rpstat == -1)
187			rpstat = 0;
188			return(rpstat);
189			}
190
191
192			rpiece() /* render picture piece by piece */
193			{
194			extern char gets(), strcat();
195			VIEW pview;
196			char buf[48];
197			int xorg, yorg;
198
199			while (gets(buf) != NULL) {
200			if (sscanf(buf, "%d %d", &xorg, &yorg) != 2) {
201			fprintf(stderr, "%s: input format error\n", progname);
202			exit(1);
203			}
204			copystruct(&pview, &ourview); /* compute view for piece */
205			switch (ourview.type) {
206			case VT_PER:
207			pview.horiz = 2.180./PIatan(
208			tan(PI/180./2.*ourview.horiz)/hmult );
209			pview.vert = 2.180./PIatan(
210			tan(PI/180./2.*ourview.vert)/vmult );
211			break;
212			case VT_PAR:
213			case VT_ANG:
214			pview.horiz = ourview.horiz / hmult;
215			pview.vert = ourview.vert / vmult;
216			break;
217			case VT_HEM:
218			default:
219			fprintf(stderr, "%s: unknown view type '-vt%c'\n",
220			progname, ourview.type);
221			exit(1);
222			}
223			pview.hoff += xorg - 0.5*(hmult-1);
224			pview.voff += yorg - 0.5*(vmult-1);
225			fputs(VIEWSTR, torp);
226			fprintview(&pview, torp);
227			putc('\n', torp);
228			fflush(torp); /* assign piece to rpict */
229			putpiece(xorg, yorg); /* place piece in output */
230			if (verbose) { /* notify caller */
231			strcat(buf, " done\n");
232			writebuf(fileno(stdout), buf, strlen(buf));
233			}
234			}
235			}
236
237
238			putpiece(xpos, ypos) /* get next piece from rpict */
239			int xpos, ypos;
240			{
241			int hr, vr;
242			int y;
243
244			getheader(fromrp, NULL); /* discard header info. */
245			if (fscnresolu(&hr, &vr, fromrp) < 0 \|\| /* check resolution */
246			hr != hres \|\| vr != vres) {
247			fprintf(stderr, "%s: resolution mismatch from rpict\n",
248			progname);
249			exit(1);
250			}
251			for (y = 0; y < vr; y++) { /* transfer scanlines */
252			if (freadcolrs(scanline, hr, fromrp) < 0) {
253			fprintf(stderr, "%s: read error from rpict\n",
254			progname);
255			exit(1);
256			}
257			if ((y == 0 \|\| hmult != 1) && lseek(outfd,
258			scanorig+((long)((vmult-1-ypos)vres+y)hmulthres+xposhres)*sizeof(COLR),
259			0) == -1) {
260			fprintf(stderr, "%s: seek error\n", outfile);
261			exit(1);
262			}
263			if (writebuf(outfd, (char )scanline, hrsizeof(COLR)) !=
264			hr*sizeof(COLR)) {
265			fprintf(stderr, "%s: write error\n", outfile);
266			exit(1);
267			}
268			}
269			}