1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: tcurve.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
3 |
#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 |
|
13 |
#ifdef _WIN32 |
14 |
#include <process.h> /* getpid() */ |
15 |
#endif |
16 |
|
17 |
#include "tgraph.h" |
18 |
|
19 |
#define XLEGEND (XBEG+XSIZ+4*TSIZ) /* x start of legend */ |
20 |
|
21 |
#define YLEGEND (YBEG+2*YSIZ/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 |
} |