src/meta/tcurve.c

#ifndef lint
static const char       RCSid[] = "$Id: tcurve.c,v 1.2 2003/06/30 14:59:12 schorsch Exp $";
#endif
/*
 *       PROGRAM TO PLOT TEL-A-GRAF CURVES TO METAFILE
 *
 *              Greg Ward
 *              12/12/84
 *
 *      cc -o ../tcurve tcurve.c tgraph.o primout.o mfio.o syscalls.o misc.o -lm
 */

#include "rtprocess.h" /* getpid() */
#include  "tgraph.h"

#define  XLEGEND  (XBEG+XSIZ+4*TSIZ)    /* x start of legend */

#define  YLEGEND  (YBEG+2*YSIZ/3)       /* y start of legend */

short  usecurve[NCUR];          /* booleans for curve usage */

double  xmin, ymin, xmax, ymax;         /* domain */

double  xsize, ysize;                   /* axis dimensions */

double  xmnset = -FHUGE, xmxset = FHUGE,        /* domain settings */
        ymnset = -FHUGE, ymxset = FHUGE;

short  logx = FALSE, logy = FALSE;      /* flags for log plots */

short  polar = FALSE;                   /* flag for polar plot */
       
short  grid = FALSE;                    /* flag for grid */

int    curtype[NCUR] = {0, 020, 040, 060, 01, 021, 041, 061,
                         02, 022, 042, 062, 03, 023, 043, 063};

char   *sym[NCUR] = {"ex", "triangle", "square", "triangle2", "diamond",
                        "cross", "octagon", "crosssquare", "exsquare",
                        "trianglesquare", "triangle2square", "crossdiamond",
                        "crossoctagon", "exoctagon", "block", "bullet"};
                       
int    ncurves;

int    xlegend,
       ylegend;                         /* current legend position */

int    symrad = SYMRAD;                 /* symbol radius */ 

char  *progname;


main(argc, argv)

int  argc;
char  **argv;

/*
 *     Take Tel-A-Graf runnable files and convert them to
 *  metafile primitives to send to standard output
 */

{
 char  tfname[MAXFNAME];
 FILE  *fp;
 int  axflag;

#ifdef  CPM
 fixargs("tcurve", &argc, &argv);
#endif

 progname = *argv++;
 argc--;

 initialize();

 for (; argc && (**argv == '-' || **argv == '+'); argc--, argv++)
    option(*argv);

 if (polar)                     /* avoid dumb choices */
    logx = FALSE;

 axflag = XTICS|XNUMS|YTICS|YNUMS;
 if (grid)
    axflag |= XGRID|YGRID;
 if (polar)
    axflag |= ORIGIN;
 else
    axflag |= BOX;

 pglob(PINCL, 2, "symbols.mta");

 if (argc)

    for ( ; argc--; argv++)  {

       fp = efopen(*argv, "r");
       normalize(fp, NULL);
       makeaxis(axflag);
       fseek(fp, 0L, 0);
       plot(fp);
       fclose(fp);
       }
 else  {

    sprintf(tfname, "%stc%d", TDIR, getpid());
    fp = efopen(tfname, "w+");
    normalize(stdin, fp);
    makeaxis(axflag);
    fseek(fp, 0L, 0);
    plot(fp);
    fclose(fp);
    unlink(tfname);
    }

 pglob(PEOF, 0200, NULL);

 return(0);
 }


plot(fp)                        /* read file and generate plot */

FILE  *fp;

{
 int  ncur = 0;                 /* curves seen so far */
 int  cur = 0;                  /* current curve pattern */
 char  line[255], *s;
 double  x, y;
 double lastx, lasty;
 short  oobounds = FALSE, firstpoint = TRUE;

 xlegend = XLEGEND;
 ylegend = YLEGEND;

 if (ncurves > 0) {
    pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "Legend:");
    pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "______");
    }

 while (fgets(line, sizeof line, fp) != NULL)

    if (istitle(line)) {
       s = snagquo(line);
       boxstring(0, 0, YBEG+YSIZ+1000, XYSIZE-1, YBEG+YSIZ+1500, s);
       }

    else if (isxlabel(line)) {
       s = snagquo(line);
       boxstring(0, XBEG, YBEG-1250, XBEG+XSIZ, YBEG-900, s);
       }

    else if (isylabel(line)) {
       s = snagquo(line);
       boxstring(020, XBEG-1900, YBEG, XBEG-1550, YBEG+YSIZ, s);
       }

    else if (islabel(line)) {
       if (++ncur < NCUR && usecurve[ncur]) {
          oobounds = FALSE;
          firstpoint = TRUE;
          cur++;
          plseg(curtype[cur], xlegend, ylegend, xlegend+2000, ylegend);
          symout(curtype[cur] & 03, xlegend, ylegend, sym[ncur]);
          pprim(PMSTR, 020, xlegend+400, ylegend+200,
                      xlegend+400, ylegend+200, snagquo(line));
          ylegend -= 500;
          }
       }
       
    else if (isdata(line) && usecurve[ncur])  {

       if (getdata(line, &x, &y) >= 0) {

          if (oobounds) {
             oobounds = FALSE;
             limline(curtype[cur], x, y, lastx, lasty, sym[ncur]);
             }
          else if (firstpoint) {
             firstpoint = FALSE;
             limline(curtype[cur], x, y, x, y, sym[ncur]);
             }
          else
             plseg(curtype[cur], XCONV(lastx), YCONV(lasty),
                                 XCONV(x), YCONV(y));

          lastx = x;
          lasty = y;

          }
       else {
          if (!oobounds) {
             oobounds = TRUE;
             if (firstpoint)
                firstpoint = FALSE;
             else
                limline(curtype[cur], lastx, lasty, x, y, NULL);
             }
          lastx = x;
          lasty = y;
          }

       }

 pglob(PEOP, 0200, NULL);

 }


limline(a0, x, y, xout, yout, s)        /* print line from/to out of bounds */

int  a0;
double  x, y, xout, yout;
char  *s;

{

    for ( ; ; )
        if (xout < xmin) {
            yout = (yout - y)*(xmin - x)/(xout - x) + y;
            xout = xmin;
        } else if (yout < ymin) {
            xout = (xout - x)*(ymin - y)/(yout - y) + x;
            yout = ymin;
        } else if (xout > xmax) {
            yout = (yout - y)*(xmax - x)/(xout - x) + y;
            xout = xmax;
        } else if (yout > ymax) {
            xout = (xout - x)*(ymax - y)/(yout - y) + x;
            yout = ymax;
        } else {
            if (s != NULL)
                symout(a0 & 03, XCONV(xout), YCONV(yout), s);
            plseg(a0, XCONV(x), YCONV(y), XCONV(xout), YCONV(yout));
            return;
        }        

}
Revision:	1.3
Committed:	Mon Jul 14 20:02:29 2003 UTC (20 years, 9 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+2 -5 lines
Log Message:	Moved some more platform dependencies to common header files. Included a few necessary system headers.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	1.3	static const char RCSid[] = "$Id: tcurve.c,v 1.2 2003/06/30 14:59:12 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5			* PROGRAM TO PLOT TEL-A-GRAF CURVES TO METAFILE
6			*
7			* Greg Ward
8			* 12/12/84
9			*
10			* cc -o ../tcurve tcurve.c tgraph.o primout.o mfio.o syscalls.o misc.o -lm
11			*/
12	schorsch	1.2
13	schorsch	1.3	#include "rtprocess.h" /* getpid() */
14	greg	1.1	#include "tgraph.h"
15
16			#define XLEGEND (XBEG+XSIZ+4TSIZ) / x start of legend */
17
18			#define YLEGEND (YBEG+2YSIZ/3) / y start of legend */
19
20			short usecurve[NCUR]; /* booleans for curve usage */
21
22			double xmin, ymin, xmax, ymax; /* domain */
23
24			double xsize, ysize; /* axis dimensions */
25
26			double xmnset = -FHUGE, xmxset = FHUGE, /* domain settings */
27			ymnset = -FHUGE, ymxset = FHUGE;
28
29			short logx = FALSE, logy = FALSE; /* flags for log plots */
30
31			short polar = FALSE; /* flag for polar plot */
32
33			short grid = FALSE; /* flag for grid */
34
35			int curtype[NCUR] = {0, 020, 040, 060, 01, 021, 041, 061,
36			02, 022, 042, 062, 03, 023, 043, 063};
37
38			char *sym[NCUR] = {"ex", "triangle", "square", "triangle2", "diamond",
39			"cross", "octagon", "crosssquare", "exsquare",
40			"trianglesquare", "triangle2square", "crossdiamond",
41			"crossoctagon", "exoctagon", "block", "bullet"};
42
43			int ncurves;
44
45			int xlegend,
46			ylegend; /* current legend position */
47
48			int symrad = SYMRAD; /* symbol radius */
49
50			char *progname;
51
52
53
54
55
56			main(argc, argv)
57
58			int argc;
59			char **argv;
60
61			/*
62			* Take Tel-A-Graf runnable files and convert them to
63			* metafile primitives to send to standard output
64			*/
65
66			{
67			char tfname[MAXFNAME];
68			FILE *fp;
69			int axflag;
70
71			#ifdef CPM
72			fixargs("tcurve", &argc, &argv);
73			#endif
74
75			progname = *argv++;
76			argc--;
77
78			initialize();
79
80			for (; argc && (argv == '-' \|\| argv == '+'); argc--, argv++)
81			option(*argv);
82
83			if (polar) /* avoid dumb choices */
84			logx = FALSE;
85
86			axflag = XTICS\|XNUMS\|YTICS\|YNUMS;
87			if (grid)
88			axflag \|= XGRID\|YGRID;
89			if (polar)
90			axflag \|= ORIGIN;
91			else
92			axflag \|= BOX;
93
94			pglob(PINCL, 2, "symbols.mta");
95
96			if (argc)
97
98			for ( ; argc--; argv++) {
99
100			fp = efopen(*argv, "r");
101			normalize(fp, NULL);
102			makeaxis(axflag);
103			fseek(fp, 0L, 0);
104			plot(fp);
105			fclose(fp);
106			}
107			else {
108
109			sprintf(tfname, "%stc%d", TDIR, getpid());
110			fp = efopen(tfname, "w+");
111			normalize(stdin, fp);
112			makeaxis(axflag);
113			fseek(fp, 0L, 0);
114			plot(fp);
115			fclose(fp);
116			unlink(tfname);
117			}
118
119			pglob(PEOF, 0200, NULL);
120
121			return(0);
122			}
123
124
125
126
127
128
129			plot(fp) /* read file and generate plot */
130
131			FILE *fp;
132
133			{
134			int ncur = 0; /* curves seen so far */
135			int cur = 0; /* current curve pattern */
136			char line[255], *s;
137			double x, y;
138			double lastx, lasty;
139			short oobounds = FALSE, firstpoint = TRUE;
140
141			xlegend = XLEGEND;
142			ylegend = YLEGEND;
143
144			if (ncurves > 0) {
145			pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "Legend:");
146			pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "______");
147			}
148
149			while (fgets(line, sizeof line, fp) != NULL)
150
151			if (istitle(line)) {
152			s = snagquo(line);
153			boxstring(0, 0, YBEG+YSIZ+1000, XYSIZE-1, YBEG+YSIZ+1500, s);
154			}
155
156			else if (isxlabel(line)) {
157			s = snagquo(line);
158			boxstring(0, XBEG, YBEG-1250, XBEG+XSIZ, YBEG-900, s);
159			}
160
161			else if (isylabel(line)) {
162			s = snagquo(line);
163			boxstring(020, XBEG-1900, YBEG, XBEG-1550, YBEG+YSIZ, s);
164			}
165
166			else if (islabel(line)) {
167			if (++ncur < NCUR && usecurve[ncur]) {
168			oobounds = FALSE;
169			firstpoint = TRUE;
170			cur++;
171			plseg(curtype[cur], xlegend, ylegend, xlegend+2000, ylegend);
172			symout(curtype[cur] & 03, xlegend, ylegend, sym[ncur]);
173			pprim(PMSTR, 020, xlegend+400, ylegend+200,
174			xlegend+400, ylegend+200, snagquo(line));
175			ylegend -= 500;
176			}
177			}
178
179			else if (isdata(line) && usecurve[ncur]) {
180
181			if (getdata(line, &x, &y) >= 0) {
182
183			if (oobounds) {
184			oobounds = FALSE;
185			limline(curtype[cur], x, y, lastx, lasty, sym[ncur]);
186			}
187			else if (firstpoint) {
188			firstpoint = FALSE;
189			limline(curtype[cur], x, y, x, y, sym[ncur]);
190			}
191			else
192			plseg(curtype[cur], XCONV(lastx), YCONV(lasty),
193			XCONV(x), YCONV(y));
194
195			lastx = x;
196			lasty = y;
197
198			}
199			else {
200			if (!oobounds) {
201			oobounds = TRUE;
202			if (firstpoint)
203			firstpoint = FALSE;
204			else
205			limline(curtype[cur], lastx, lasty, x, y, NULL);
206			}
207			lastx = x;
208			lasty = y;
209			}
210
211			}
212
213			pglob(PEOP, 0200, NULL);
214
215			}
216
217
218
219
220
221			limline(a0, x, y, xout, yout, s) /* print line from/to out of bounds */
222
223			int a0;
224			double x, y, xout, yout;
225			char *s;
226
227			{
228
229			for ( ; ; )
230			if (xout < xmin) {
231			yout = (yout - y)*(xmin - x)/(xout - x) + y;
232			xout = xmin;
233			} else if (yout < ymin) {
234			xout = (xout - x)*(ymin - y)/(yout - y) + x;
235			yout = ymin;
236			} else if (xout > xmax) {
237			yout = (yout - y)*(xmax - x)/(xout - x) + y;
238			xout = xmax;
239			} else if (yout > ymax) {
240			xout = (xout - x)*(ymax - y)/(yout - y) + x;
241			yout = ymax;
242			} else {
243			if (s != NULL)
244			symout(a0 & 03, XCONV(xout), YCONV(yout), s);
245			plseg(a0, XCONV(x), YCONV(y), XCONV(xout), YCONV(yout));
246			return;
247			}
248
249			}