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#ifndef lint |
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static const char RCSid[] = "$Id: aed5.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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#endif |
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/* |
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* aed.c - driver for AED 512 terminal. |
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* |
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* 7/8/86 |
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*/ |
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|
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#include <fcntl.h> |
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|
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#include "meta.h" |
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|
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|
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/* AED command characters */ |
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|
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#define AEDFMT "1888N" /* Format string to send to AED */ |
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#define SCT 75 /* Set color lookup table */ |
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#define SEC 67 /* Set color for vector drawing */ |
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#define SBC 91 /* Set background color */ |
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#define MOV 81 /* Set CAP (current access pointer) to x, y */ |
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#define MVR 105 /* Set CAP relative */ |
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#define DVA 65 /* Draw vector to new CAP x, y */ |
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#define DVR 108 /* Draw vector relative */ |
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#define WHR 92 /* Write horizontal runs */ |
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#define OPT 40 /* Miscellaneous terminal control */ |
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#define SEN 71 /* Set encoding types */ |
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#define RST 48 /* Reset terminal */ |
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#define FFD 12 /* Clear screen */ |
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#define SCS 96 /* Set status */ |
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#define DAI 114 /* Define area of interest */ |
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#define EJC 85 /* Enable Joystick cursor positioning */ |
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#define DJC 100 /* Disable Joystick cursor positioning */ |
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#define SCC 99 /* Set Cursor Colors */ |
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#define SCP 93 /* Set Cursor Parameters */ |
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#define RCP 106 /* Read Cursor Position */ |
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#define SAP 94 /* Set alphanumeric parameters */ |
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#define SLS 49 /* Set Line Style */ |
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#define DFR 111 /* Draw Filled Rectangle */ |
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#define MAXRLEN 255 /* Maximum runlength for a span */ |
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#define NUL 0 /* Null terminates run sequences */ |
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#define ESC 27 /* Escape starts a command sequence */ |
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#define END 1 /* Ctrl-A used to terminate command mode */ |
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|
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#define command(c) (putc(ESC, stdout), putc(c, stdout)) |
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#define byte(b) putc(b, stdout) |
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#define ascii(c) putc(c, stdout) |
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|
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#define BKGCOL 7 /* Background color (white) */ |
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|
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#define NROWS 512 /* # rows for output */ |
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#define NCOLS 512 /* # columns for output */ |
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|
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#define xconv(x) CONV(x, NCOLS) |
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#define yconv(y) CONV(y, NROWS) |
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|
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#define XCOM "pexpand +vOCIs -tpSUR %s" |
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|
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char *progname; |
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|
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static short newpage = TRUE; |
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|
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static int curx = -1, /* current position */ |
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cury = -1; |
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|
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static int curcol = -1; /* current color */ |
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|
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static short curmod = -1; /* current line drawing mode */ |
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|
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static short cmode[4] = {0, 1, 2, 4}; /* color map */ |
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|
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static short lmode[4] = {255, 15, 85, 39}; /* line map */ |
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|
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static PRIMITIVE nextp; |
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|
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|
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|
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main(argc, argv) |
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int argc; |
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char **argv; |
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{ |
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FILE *fp, *popen(); |
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char comargs[200], shcom[300]; |
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short condonly = FALSE, conditioned = FALSE; |
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|
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progname = *argv++; |
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argc--; |
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|
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while (argc && **argv == '-') { |
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switch (*(*argv+1)) { |
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case 'c': |
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condonly = TRUE; |
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break; |
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case 'r': |
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conditioned = TRUE; |
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break; |
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default: |
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error(WARNING, "unknown option"); |
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break; |
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} |
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argv++; |
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argc--; |
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} |
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|
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if (conditioned) { |
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init(); |
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if (argc) |
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while (argc) { |
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fp = efopen(*argv, "r"); |
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plot(fp); |
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fclose(fp); |
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argv++; |
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argc--; |
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} |
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else |
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plot(stdin); |
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} else { |
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comargs[0] = '\0'; |
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while (argc) { |
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strcat(comargs, " "); |
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strcat(comargs, *argv); |
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argv++; |
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argc--; |
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} |
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sprintf(shcom, XCOM, comargs); |
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if (condonly) |
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return(system(shcom)); |
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else { |
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init(); |
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if ((fp = popen(shcom, "r")) == NULL) |
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error(SYSTEM, "cannot execute input filter"); |
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plot(fp); |
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return(pclose(fp)); |
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} |
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} |
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return(0); |
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} |
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|
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|
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|
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|
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|
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plot(infp) /* plot meta-file */ |
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|
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FILE *infp; |
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|
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{ |
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|
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do { |
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readp(&nextp, infp); |
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while (isprim(nextp.com)) { |
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doprim(&nextp); |
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fargs(&nextp); |
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readp(&nextp, infp); |
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} |
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doglobal(&nextp); |
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fargs(&nextp); |
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} |
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while (nextp.com != PEOF); |
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|
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} |
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|
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|
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|
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|
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|
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doglobal(g) /* execute a global command */ |
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|
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PRIMITIVE *g; |
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|
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{ |
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int tty; |
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char c; |
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|
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switch (g->com) { |
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|
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case PEOF: |
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break; |
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|
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case PDRAW: |
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fflush(stdout); |
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break; |
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|
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case PEOP: |
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newpage = TRUE; |
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if (!isatty(fileno(stdout))) |
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break; |
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/* fall through */ |
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|
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case PPAUS: |
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fflush(stdout); |
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tty = open(TTY, O_RDWR); |
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if (g->args != NULL) { |
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write(tty, g->args, strlen(g->args)); |
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write(tty, " - (hit return to continue)", 27); |
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} |
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else |
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write(tty, "\007", 1); |
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do { |
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c = '\n'; |
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read(tty, &c, 1); |
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} |
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while (c != '\n' && c != '\r'); |
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close(tty); |
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break; |
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|
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default: |
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sprintf(errmsg, "unknown command '%c' in doglobal", g->com); |
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error(WARNING, errmsg); |
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break; |
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} |
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|
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} |
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|
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|
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|
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|
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doprim(p) /* plot primitive */ |
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|
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register PRIMITIVE *p; |
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|
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{ |
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|
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if (newpage) { /* clear screen */ |
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command(FFD); |
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shortwait(50); |
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newpage = FALSE; |
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} |
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|
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switch (p->com) { |
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|
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case PLSEG: |
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plotlseg(p); |
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break; |
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|
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case PMSTR: |
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printstr(p); |
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break; |
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|
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case PRFILL: |
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fillrect(p); |
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break; |
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|
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default: |
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sprintf(errmsg, "unknown command '%c' in doprim", p->com); |
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error(WARNING, errmsg); |
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return; |
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} |
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|
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} |
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|
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|
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|
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|
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|
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|
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printstr(p) /* output a string */ |
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|
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register PRIMITIVE *p; |
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|
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{ |
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static int hsp[4] = {6, 5, 4, 3}; |
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char font, size; |
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int hspace, vspace = 18; |
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|
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hspace = hsp[(p->arg0 >> 4) & 03]; |
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|
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if (p->arg0 & 04) |
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hspace *= 2; |
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|
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if (hspace > 16) { |
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font = '7'; size = '2'; |
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} else if (hspace > 12) { |
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font = '5'; size = '2'; |
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} else if (hspace > 8) { |
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font = '7'; size = '1'; |
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} else { |
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font = '5'; size = '1'; |
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} |
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|
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command(SAP); |
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ascii(size); ascii(font); |
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byte(hspace); byte(vspace); |
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ascii('L'); |
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|
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setcolor(p->arg0 & 03); |
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|
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move(p->xy[XMN], p->xy[YMX]); |
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|
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putc(END, stdout); |
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fputs(p->args, stdout); |
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|
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curx = -1; |
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cury = -1; |
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} |
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|
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|
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|
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|
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|
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plotlseg(p) /* plot a line segment */ |
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|
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register PRIMITIVE *p; |
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|
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{ |
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static short right = FALSE; |
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int y1, y2; |
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short lm = (p->arg0 >> 4) & 03; |
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|
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if (p->arg0 & 0100) { |
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y1 = p->xy[YMX]; |
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y2 = p->xy[YMN]; |
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} |
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else { |
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y1 = p->xy[YMN]; |
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y2 = p->xy[YMX]; |
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} |
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|
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setcolor(p->arg0 & 03); |
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|
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if (lm != curmod) { |
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command(SLS); |
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byte(lmode[lm]); byte(85); |
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curmod = lm; |
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} |
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|
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if (p->xy[XMN] == curx && y1 == cury) |
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draw(p->xy[XMX], y2); |
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else if (p->xy[XMX] == curx && y2 == cury) |
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draw(p->xy[XMN], y1); |
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else if (right = !right) { |
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move(p->xy[XMN], y1); |
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draw(p->xy[XMX], y2); |
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} else { |
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move(p->xy[XMX], y2); |
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draw(p->xy[XMN], y1); |
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} |
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} |
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|
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|
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fillrect(p) |
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|
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register PRIMITIVE *p; |
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|
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{ |
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|
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setcolor(p->arg0 & 03); |
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move(p->xy[XMN], p->xy[YMN]); |
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curx = xconv(p->xy[XMX]); |
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cury = yconv(p->xy[YMX]); |
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command(DFR); |
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aedcoord(curx, cury); |
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|
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} |
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|
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init() /* initialize terminal */ |
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{ |
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/* Reset AED and tell it the data format */ |
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command(RST); |
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longwait(2); |
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command(OPT); |
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byte(6); byte(1); /* AED command set */ |
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command(SEN); fputs(AEDFMT, stdout); |
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command(SBC); byte(BKGCOL); |
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} |
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|
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|
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setcolor(cn) /* set color */ |
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int cn; |
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{ |
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if (cn != curcol) { |
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command(SEC); |
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byte(cmode[cn]); |
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curcol = cn; |
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} |
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} |
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|
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|
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move(x, y) /* move to coordinate (x,y) */ |
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int x, y; |
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{ |
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command(MOV); |
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aedcoord(xconv(x), yconv(y)); |
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curx = x; |
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cury = y; |
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} |
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|
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|
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draw(x, y) /* draw vector from CAP to (x,y) */ |
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int x, y; |
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{ |
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command(DVA); |
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aedcoord(xconv(x), yconv(y)); |
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curx = x; |
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cury = y; |
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} |
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|
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|
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/* |
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* aedcoord - puts out an (x, y) coordinate in AED 8 bit format. |
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*/ |
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|
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aedcoord(x, y) |
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register int x, y; |
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{ |
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putc(((x >> 4) & 0x30) | ((y >> 8) & 0x3), stdout); |
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putc(x & 0xff, stdout); |
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putc(y & 0xff, stdout); |
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} |
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|
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|
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longwait(t) /* longer wait */ |
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int t; |
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{ |
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fflush(stdout); |
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sleep(t); |
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} |
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|
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|
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shortwait(t) /* shorter wait */ |
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int t; |
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{ |
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register long l = t*1000; |
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|
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fflush(stdout); |
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while (l--) |
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; |
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} |
