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#ifndef lint |
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static const char RCSid[] = "$Id: tcurve.c,v 1.4 2003/08/01 14:14:24 schorsch Exp $"; |
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#endif |
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/* |
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* PROGRAM TO PLOT TEL-A-GRAF CURVES TO METAFILE |
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* |
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* Greg Ward |
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* 12/12/84 |
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* |
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* cc -o ../tcurve tcurve.c tgraph.o primout.o mfio.o syscalls.o misc.o -lm |
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*/ |
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|
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#include "rtprocess.h" /* getpid() */ |
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#include "tgraph.h" |
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#include "plot.h" |
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|
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#define XLEGEND (XBEG+XSIZ+4*TSIZ) /* x start of legend */ |
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|
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#define YLEGEND (YBEG+2*YSIZ/3) /* y start of legend */ |
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|
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short usecurve[NCUR]; /* booleans for curve usage */ |
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|
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double xmin, ymin, xmax, ymax; /* domain */ |
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|
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double xsize, ysize; /* axis dimensions */ |
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|
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double xmnset = -FHUGE, xmxset = FHUGE, /* domain settings */ |
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ymnset = -FHUGE, ymxset = FHUGE; |
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|
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short logx = FALSE, logy = FALSE; /* flags for log plots */ |
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|
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short polar = FALSE; /* flag for polar plot */ |
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|
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short grid = FALSE; /* flag for grid */ |
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|
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int curtype[NCUR] = {0, 020, 040, 060, 01, 021, 041, 061, |
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02, 022, 042, 062, 03, 023, 043, 063}; |
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|
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char *sym[NCUR] = {"ex", "triangle", "square", "triangle2", "diamond", |
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"cross", "octagon", "crosssquare", "exsquare", |
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"trianglesquare", "triangle2square", "crossdiamond", |
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"crossoctagon", "exoctagon", "block", "bullet"}; |
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|
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int ncurves; |
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|
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int xlegend, |
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ylegend; /* current legend position */ |
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|
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int symrad = SYMRAD; /* symbol radius */ |
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|
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char *progname; |
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|
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|
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static void limline(int a0, double x,double y,double xout,double yout, char *s); |
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|
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|
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int |
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main( |
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int argc, |
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char **argv |
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) |
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/* |
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* Take Tel-A-Graf runnable files and convert them to |
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* metafile primitives to send to standard output |
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*/ |
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|
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{ |
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char tfname[MAXFNAME]; |
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FILE *fp; |
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int axflag; |
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|
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progname = *argv++; |
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argc--; |
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|
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initialize(); |
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|
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for (; argc && (**argv == '-' || **argv == '+'); argc--, argv++) |
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option(*argv); |
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|
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if (polar) /* avoid dumb choices */ |
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logx = FALSE; |
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|
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axflag = XTICS|XNUMS|YTICS|YNUMS; |
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if (grid) |
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axflag |= XGRID|YGRID; |
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if (polar) |
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axflag |= ORIGIN; |
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else |
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axflag |= BOX; |
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|
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pglob(PINCL, 2, "symbols.mta"); |
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|
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if (argc) |
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|
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for ( ; argc--; argv++) { |
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|
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fp = efopen(*argv, "r"); |
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normalize(fp, NULL); |
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makeaxis(axflag); |
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fseek(fp, 0L, 0); |
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plot(fp); |
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fclose(fp); |
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} |
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else { |
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|
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sprintf(tfname, "%stc%d", TDIR, getpid()); |
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fp = efopen(tfname, "w+"); |
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normalize(stdin, fp); |
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makeaxis(axflag); |
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fseek(fp, 0L, 0); |
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plot(fp); |
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fclose(fp); |
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unlink(tfname); |
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} |
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|
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pglob(PEOF, 0200, NULL); |
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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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void |
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plot( /* read file and generate plot */ |
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FILE *fp |
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) |
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{ |
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int ncur = 0; /* curves seen so far */ |
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int cur = 0; /* current curve pattern */ |
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char line[255], *s; |
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double x, y; |
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double lastx = 0, lasty = 0; |
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short oobounds = FALSE, firstpoint = TRUE; |
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|
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xlegend = XLEGEND; |
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ylegend = YLEGEND; |
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|
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if (ncurves > 0) { |
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pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "Legend:"); |
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pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "______"); |
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} |
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|
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while (fgets(line, sizeof line, fp) != NULL) |
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|
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if (istitle(line)) { |
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s = snagquo(line); |
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boxstring(0, 0, YBEG+YSIZ+1000, XYSIZE-1, YBEG+YSIZ+1500, s); |
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} |
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|
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else if (isxlabel(line)) { |
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s = snagquo(line); |
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boxstring(0, XBEG, YBEG-1250, XBEG+XSIZ, YBEG-900, s); |
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} |
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|
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else if (isylabel(line)) { |
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s = snagquo(line); |
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boxstring(020, XBEG-1900, YBEG, XBEG-1550, YBEG+YSIZ, s); |
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} |
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|
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else if (islabel(line)) { |
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if (++ncur < NCUR && usecurve[ncur]) { |
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oobounds = FALSE; |
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firstpoint = TRUE; |
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cur++; |
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plseg(curtype[cur], xlegend, ylegend, xlegend+2000, ylegend); |
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symout(curtype[cur] & 03, xlegend, ylegend, sym[ncur]); |
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pprim(PMSTR, 020, xlegend+400, ylegend+200, |
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xlegend+400, ylegend+200, snagquo(line)); |
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ylegend -= 500; |
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} |
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} |
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|
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else if (isdata(line) && usecurve[ncur]) { |
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|
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if (getdata(line, &x, &y) >= 0) { |
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|
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if (oobounds) { |
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oobounds = FALSE; |
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limline(curtype[cur], x, y, lastx, lasty, sym[ncur]); |
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} |
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else if (firstpoint) { |
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firstpoint = FALSE; |
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limline(curtype[cur], x, y, x, y, sym[ncur]); |
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} |
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else |
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plseg(curtype[cur], XCONV(lastx), YCONV(lasty), |
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XCONV(x), YCONV(y)); |
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|
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lastx = x; |
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lasty = y; |
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|
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} |
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else { |
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if (!oobounds) { |
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oobounds = TRUE; |
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if (firstpoint) |
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firstpoint = FALSE; |
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else |
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limline(curtype[cur], lastx, lasty, x, y, NULL); |
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} |
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lastx = x; |
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lasty = y; |
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} |
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|
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} |
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|
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pglob(PEOP, 0200, NULL); |
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|
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} |
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|
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|
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|
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void |
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limline( /* print line from/to out of bounds */ |
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int a0, |
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double x, |
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double y, |
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double xout, |
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double yout, |
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char *s |
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) |
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{ |
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|
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for ( ; ; ) |
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if (xout < xmin) { |
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yout = (yout - y)*(xmin - x)/(xout - x) + y; |
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xout = xmin; |
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} else if (yout < ymin) { |
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xout = (xout - x)*(ymin - y)/(yout - y) + x; |
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yout = ymin; |
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} else if (xout > xmax) { |
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yout = (yout - y)*(xmax - x)/(xout - x) + y; |
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xout = xmax; |
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} else if (yout > ymax) { |
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xout = (xout - x)*(ymax - y)/(yout - y) + x; |
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yout = ymax; |
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} else { |
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if (s != NULL) |
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symout(a0 & 03, XCONV(xout), YCONV(yout), s); |
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plseg(a0, XCONV(x), YCONV(y), XCONV(xout), YCONV(yout)); |
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return; |
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} |
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|
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} |
