src/meta/tcurve.c

#ifndef lint
static const char       RCSid[] = "$Id: tcurve.c,v 1.1 2003/02/22 02:07:26 greg 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
 */

#ifdef _WIN32
 #include <process.h> /* getpid() */
#endif

#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:	1.2
Committed:	Mon Jun 30 14:59:12 2003 UTC (22 years, 4 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+5 -1 lines
Log Message:	Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	1.2	static const char RCSid[] = "$Id: tcurve.c,v 1.1 2003/02/22 02:07:26 greg 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			#ifdef _WIN32
14			#include <process.h> /* getpid() */
15			#endif
16	greg	1.1
17			#include "tgraph.h"
18
19			#define XLEGEND (XBEG+XSIZ+4TSIZ) / x start of legend */
20
21			#define YLEGEND (YBEG+2YSIZ/3) / y start of legend */
22
23			short usecurve[NCUR]; /* booleans for curve usage */
24
25			double xmin, ymin, xmax, ymax; /* domain */
26
27			double xsize, ysize; /* axis dimensions */
28
29			double xmnset = -FHUGE, xmxset = FHUGE, /* domain settings */
30			ymnset = -FHUGE, ymxset = FHUGE;
31
32			short logx = FALSE, logy = FALSE; /* flags for log plots */
33
34			short polar = FALSE; /* flag for polar plot */
35
36			short grid = FALSE; /* flag for grid */
37
38			int curtype[NCUR] = {0, 020, 040, 060, 01, 021, 041, 061,
39			02, 022, 042, 062, 03, 023, 043, 063};
40
41			char *sym[NCUR] = {"ex", "triangle", "square", "triangle2", "diamond",
42			"cross", "octagon", "crosssquare", "exsquare",
43			"trianglesquare", "triangle2square", "crossdiamond",
44			"crossoctagon", "exoctagon", "block", "bullet"};
45
46			int ncurves;
47
48			int xlegend,
49			ylegend; /* current legend position */
50
51			int symrad = SYMRAD; /* symbol radius */
52
53			char *progname;
54
55
56
57
58
59			main(argc, argv)
60
61			int argc;
62			char **argv;
63
64			/*
65			* Take Tel-A-Graf runnable files and convert them to
66			* metafile primitives to send to standard output
67			*/
68
69			{
70			char tfname[MAXFNAME];
71			FILE *fp;
72			int axflag;
73
74			#ifdef CPM
75			fixargs("tcurve", &argc, &argv);
76			#endif
77
78			progname = *argv++;
79			argc--;
80
81			initialize();
82
83			for (; argc && (argv == '-' \|\| argv == '+'); argc--, argv++)
84			option(*argv);
85
86			if (polar) /* avoid dumb choices */
87			logx = FALSE;
88
89			axflag = XTICS\|XNUMS\|YTICS\|YNUMS;
90			if (grid)
91			axflag \|= XGRID\|YGRID;
92			if (polar)
93			axflag \|= ORIGIN;
94			else
95			axflag \|= BOX;
96
97			pglob(PINCL, 2, "symbols.mta");
98
99			if (argc)
100
101			for ( ; argc--; argv++) {
102
103			fp = efopen(*argv, "r");
104			normalize(fp, NULL);
105			makeaxis(axflag);
106			fseek(fp, 0L, 0);
107			plot(fp);
108			fclose(fp);
109			}
110			else {
111
112			sprintf(tfname, "%stc%d", TDIR, getpid());
113			fp = efopen(tfname, "w+");
114			normalize(stdin, fp);
115			makeaxis(axflag);
116			fseek(fp, 0L, 0);
117			plot(fp);
118			fclose(fp);
119			unlink(tfname);
120			}
121
122			pglob(PEOF, 0200, NULL);
123
124			return(0);
125			}
126
127
128
129
130
131
132			plot(fp) /* read file and generate plot */
133
134			FILE *fp;
135
136			{
137			int ncur = 0; /* curves seen so far */
138			int cur = 0; /* current curve pattern */
139			char line[255], *s;
140			double x, y;
141			double lastx, lasty;
142			short oobounds = FALSE, firstpoint = TRUE;
143
144			xlegend = XLEGEND;
145			ylegend = YLEGEND;
146
147			if (ncurves > 0) {
148			pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "Legend:");
149			pprim(PMSTR, 0100, xlegend, ylegend+800, xlegend, ylegend+800, "______");
150			}
151
152			while (fgets(line, sizeof line, fp) != NULL)
153
154			if (istitle(line)) {
155			s = snagquo(line);
156			boxstring(0, 0, YBEG+YSIZ+1000, XYSIZE-1, YBEG+YSIZ+1500, s);
157			}
158
159			else if (isxlabel(line)) {
160			s = snagquo(line);
161			boxstring(0, XBEG, YBEG-1250, XBEG+XSIZ, YBEG-900, s);
162			}
163
164			else if (isylabel(line)) {
165			s = snagquo(line);
166			boxstring(020, XBEG-1900, YBEG, XBEG-1550, YBEG+YSIZ, s);
167			}
168
169			else if (islabel(line)) {
170			if (++ncur < NCUR && usecurve[ncur]) {
171			oobounds = FALSE;
172			firstpoint = TRUE;
173			cur++;
174			plseg(curtype[cur], xlegend, ylegend, xlegend+2000, ylegend);
175			symout(curtype[cur] & 03, xlegend, ylegend, sym[ncur]);
176			pprim(PMSTR, 020, xlegend+400, ylegend+200,
177			xlegend+400, ylegend+200, snagquo(line));
178			ylegend -= 500;
179			}
180			}
181
182			else if (isdata(line) && usecurve[ncur]) {
183
184			if (getdata(line, &x, &y) >= 0) {
185
186			if (oobounds) {
187			oobounds = FALSE;
188			limline(curtype[cur], x, y, lastx, lasty, sym[ncur]);
189			}
190			else if (firstpoint) {
191			firstpoint = FALSE;
192			limline(curtype[cur], x, y, x, y, sym[ncur]);
193			}
194			else
195			plseg(curtype[cur], XCONV(lastx), YCONV(lasty),
196			XCONV(x), YCONV(y));
197
198			lastx = x;
199			lasty = y;
200
201			}
202			else {
203			if (!oobounds) {
204			oobounds = TRUE;
205			if (firstpoint)
206			firstpoint = FALSE;
207			else
208			limline(curtype[cur], lastx, lasty, x, y, NULL);
209			}
210			lastx = x;
211			lasty = y;
212			}
213
214			}
215
216			pglob(PEOP, 0200, NULL);
217
218			}
219
220
221
222
223
224			limline(a0, x, y, xout, yout, s) /* print line from/to out of bounds */
225
226			int a0;
227			double x, y, xout, yout;
228			char *s;
229
230			{
231
232			for ( ; ; )
233			if (xout < xmin) {
234			yout = (yout - y)*(xmin - x)/(xout - x) + y;
235			xout = xmin;
236			} else if (yout < ymin) {
237			xout = (xout - x)*(ymin - y)/(yout - y) + x;
238			yout = ymin;
239			} else if (xout > xmax) {
240			yout = (yout - y)*(xmax - x)/(xout - x) + y;
241			xout = xmax;
242			} else if (yout > ymax) {
243			xout = (xout - x)*(ymax - y)/(yout - y) + x;
244			yout = ymax;
245			} else {
246			if (s != NULL)
247			symout(a0 & 03, XCONV(xout), YCONV(yout), s);
248			plseg(a0, XCONV(x), YCONV(y), XCONV(xout), YCONV(yout));
249			return;
250			}
251
252			}