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/* Copyright (c) 1993 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Generate sections of a picture. |
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*/ |
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#include <signal.h> |
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#include "color.h" |
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#include "view.h" |
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#include "resolu.h" |
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#ifndef NFS |
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#define NFS 1 |
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#define guard_io() 0 |
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#define unguard() 0 |
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#endif |
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|
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extern char *strerror(); |
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|
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/* rpict command */ |
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char *rpargv[128] = {"rpict", "-S", "1"}; |
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int rpargc = 3; |
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|
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char *progname; |
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int verbose = 0; |
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unsigned timelim = 0; |
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int rvrlim = -1; |
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|
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extern long lseek(), ftell(); |
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|
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int gotalrm = 0; |
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int onalrm() { gotalrm++; } |
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progname = argv[0]; |
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for (i = 1; i < argc; i++) { |
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/* expand arguments */ |
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while (rval = expandarg(&argc, &argv, i)) |
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if (rval < 0) { |
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fprintf(stderr, "%s: cannot expand '%s'", |
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argv[0], argv[i]); |
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exit(1); |
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} |
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while ((rval = expandarg(&argc, &argv, i)) > 0) |
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; |
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if (rval < 0) { |
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fprintf(stderr, "%s: cannot expand '%s'", |
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argv[0], argv[i]); |
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exit(1); |
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} |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'v': |
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case 'p': /* pixel aspect ratio? */ |
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if (argv[i][2] != 'a' || argv[i][3]) |
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break; |
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pixaspect = atof(argv[i+1]); |
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pixaspect = atof(argv[++i]); |
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continue; |
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case 'T': /* time limit (hours) */ |
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if (argv[i][2]) |
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break; |
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timelim = atof(argv[++i])*3600. + .5; |
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break; |
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case 'x': /* overall x resolution */ |
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if (argv[i][2]) |
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break; |
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int ltyp; |
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{ |
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static struct flock fls; /* static so initialized to zeroes */ |
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extern char *sys_errlist[]; |
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fls.l_type = ltyp; |
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if (fcntl(fd, F_SETLKW, &fls) < 0) { |
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fprintf(stderr, "%s: cannot lock/unlock file: %s\n", |
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progname, sys_errlist[errno]); |
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progname, strerror(errno)); |
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exit(1); |
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} |
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} |
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exit(1); |
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} |
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signal(SIGALRM, onalrm); |
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if (timelim) |
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alarm(timelim); |
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return; |
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filerr: |
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fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = ourview.vert / vmult; |
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break; |
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case VT_CYL: |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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case VT_HEM: |
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pview.horiz = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
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} |
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/* render each piece */ |
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while (nextpiece(&xorg, &yorg)) { |
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pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
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pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
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pview.hoff = ourview.hoff*hmult + xorg - 0.5*(hmult-1); |
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pview.voff = ourview.voff*vmult + yorg - 0.5*(vmult-1); |
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fputs(VIEWSTR, torp); |
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fprintview(&pview, torp); |
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putc('\n', torp); |
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filerr("lock"); |
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#endif |
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/* write new piece to file */ |
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if (lseek(outfd, fls.l_start, 0) == -1) |
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if (lseek(outfd, (off_t)fls.l_start, 0) < 0) |
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filerr("seek"); |
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if (hmult == 1) { |
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if (writebuf(outfd, (char *)pbuf, |
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hr*sizeof(COLR)) != hr*sizeof(COLR)) |
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filerr("write"); |
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if (y < vr-1 && lseek(outfd, |
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(long)(hmult-1)*hr*sizeof(COLR), |
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1) == -1) |
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(off_t)(hmult-1)*hr*sizeof(COLR), |
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1) < 0) |
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filerr("seek"); |
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} |
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#if NFS |
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if (fcntl(outfd, F_SETLKW, &fls) < 0) |
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filerr("lock"); |
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#endif |
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if (verbose) { /* notify caller */ |
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printf("%d %d done\n", xpos, ypos); |
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fflush(stdout); |
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} |
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if (syncfp != NULL) { /* record what's been done */ |
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sflock(F_WRLCK); |
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fseek(syncfp, 0L, 2); /* append index */ |
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/*** Unlock not necessary, since |
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sflock(F_UNLCK); _exit() or nextpiece() is next ***/ |
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} |
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if (verbose) { /* notify caller */ |
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printf("%d %d done\n", xpos, ypos); |
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fflush(stdout); |
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} |
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if (pid == -1) /* didn't fork or fork failed */ |
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return(0); |
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_exit(0); /* else exit child process (releasing locks) */ |
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filerr(t) /* report file error and exit */ |
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char *t; |
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{ |
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extern char *sys_errlist[]; |
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fprintf(stderr, "%s: %s error on file \"%s\": %s\n", |
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progname, t, outfile, sys_errlist[errno]); |
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progname, t, outfile, strerror(errno)); |
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_exit(1); |
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} |
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