1 |
greg |
1.1 |
#ifndef lint |
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schorsch |
1.2 |
static const char RCSid[] = "$Id: plotin.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
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/* |
5 |
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* Program to convert plot(5) files to metafiles |
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* |
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* cc -o plotin plotin.c primout.o mfio.o syscalls.o misc.o -lm |
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* |
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* 5/20/85 |
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*/ |
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schorsch |
1.2 |
#include <string.h> |
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greg |
1.1 |
#include "meta.h" |
15 |
schorsch |
1.2 |
#include "plot.h" |
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greg |
1.1 |
|
17 |
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#define getsi(f, m) ICONV(geti(f)-(m), size) |
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char *progname; |
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static int xmin = 0, ymin = 0, /* current space settings */ |
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size = XYSIZE; |
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static int curx = -1, /* current position */ |
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cury = -1; |
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static short curmod = 0; /* current line drawing mode */ |
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schorsch |
1.2 |
static void convert(FILE *infp); |
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static int geti(FILE *fp); |
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static int quadr(int x, int y, int xp, int yp); |
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static void step(int d); |
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36 |
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static void linemod(char s[]); |
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static void erase(void); |
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static void space(int xmn, int ymn, int xmx, int ymx); |
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static void move(int x, int y); |
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static void cont(int x, int y); |
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static void line(int x0, int y0, int x1, int y1); |
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static void label(register char *s); |
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static void point(int x, int y); |
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static void arc(int x, int y, int x0, int y0, int x1, int y1); |
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static void circle(int x, int y, int r); |
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greg |
1.1 |
|
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schorsch |
1.2 |
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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greg |
1.1 |
{ |
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FILE *fp; |
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progname = *argv++; |
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argc--; |
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while (argc && **argv == '-') { |
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switch (*(*argv+1)) { |
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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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if (argc) |
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while (argc) { |
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fp = efopen(*argv, "r"); |
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convert(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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convert(stdin); |
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pglob(PEOF, 0200, NULL); |
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return(0); |
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schorsch |
1.2 |
} |
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greg |
1.1 |
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schorsch |
1.2 |
void |
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convert( /* convert to meta-file */ |
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FILE *infp |
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) |
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greg |
1.1 |
{ |
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char *fgets(), sbuf[BUFSIZ]; |
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int command; |
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int a1, a2, a3, a4, a5, a6; |
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while ((command = getc(infp)) != EOF) |
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switch (command) { |
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case 'm': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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move(a1, a2); |
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break; |
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case 'n': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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cont(a1, a2); |
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break; |
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case 'p': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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point(a1, a2); |
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break; |
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case 'l': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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a3 = getsi(infp, xmin); |
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a4 = getsi(infp, ymin); |
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line(a1, a2, a3, a4); |
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break; |
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case 't': |
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fgets(sbuf, sizeof(sbuf), infp); |
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sbuf[strlen(sbuf)-1] = '\0'; |
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label(sbuf); |
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break; |
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case 'a': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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a3 = getsi(infp, xmin); |
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a4 = getsi(infp, ymin); |
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a5 = getsi(infp, xmin); |
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a6 = getsi(infp, ymin); |
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arc(a1, a2, a3, a4, a5, a6); |
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break; |
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case 'c': |
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a1 = getsi(infp, xmin); |
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a2 = getsi(infp, ymin); |
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a3 = getsi(infp, 0); |
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circle(a1, a2, a3); |
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break; |
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case 'e': |
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erase(); |
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break; |
144 |
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case 'f': |
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fgets(sbuf, sizeof(sbuf), infp); |
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linemod(sbuf); |
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break; |
148 |
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case 's': |
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a1 = geti(infp); |
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a2 = geti(infp); |
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a3 = geti(infp); |
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a4 = geti(infp); |
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space(a1, a2, a3, a4); |
154 |
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break; |
155 |
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default: |
156 |
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error(USER, "unknown command in convert"); |
157 |
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break; |
158 |
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} |
159 |
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} |
160 |
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161 |
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162 |
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163 |
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164 |
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int |
165 |
schorsch |
1.2 |
geti( /* get two-byte integer from file */ |
166 |
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register FILE *fp |
167 |
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) |
168 |
greg |
1.1 |
{ |
169 |
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register int i; |
170 |
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171 |
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i = getc(fp); |
172 |
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i |= getc(fp) << 8; |
173 |
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if (i & 0100000) |
174 |
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i |= ~0177777; /* manual sign extend */ |
175 |
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if (feof(fp)) |
176 |
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error(USER, "unexpected end of file in geti"); |
177 |
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178 |
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return(i); |
179 |
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} |
180 |
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181 |
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182 |
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183 |
schorsch |
1.2 |
void |
184 |
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move( /* move to new position */ |
185 |
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register int x, |
186 |
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register int y |
187 |
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) |
188 |
greg |
1.1 |
{ |
189 |
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curx = x; |
190 |
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cury = y; |
191 |
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} |
192 |
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193 |
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194 |
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195 |
schorsch |
1.2 |
void |
196 |
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cont( /* draw line to point */ |
197 |
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register int x, |
198 |
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register int y |
199 |
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) |
200 |
greg |
1.1 |
{ |
201 |
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plseg(curmod, curx, cury, x, y); |
202 |
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curx = x; |
203 |
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cury = y; |
204 |
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} |
205 |
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206 |
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207 |
schorsch |
1.2 |
void |
208 |
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point( /* draw a point */ |
209 |
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register int x, |
210 |
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register int y |
211 |
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) |
212 |
greg |
1.1 |
{ |
213 |
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plseg(0, x, y, x, y); |
214 |
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curx = x; |
215 |
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cury = y; |
216 |
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} |
217 |
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218 |
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219 |
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220 |
schorsch |
1.2 |
void |
221 |
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line( /* draw a line segment */ |
222 |
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int x0, |
223 |
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int y0, |
224 |
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int x1, |
225 |
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int y1 |
226 |
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) |
227 |
greg |
1.1 |
{ |
228 |
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move(x0, y0); |
229 |
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cont(x1, y1); |
230 |
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} |
231 |
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232 |
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233 |
schorsch |
1.2 |
void |
234 |
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label( /* print a label */ |
235 |
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register char *s |
236 |
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) |
237 |
greg |
1.1 |
{ |
238 |
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pprim(PMSTR, 0, curx, cury, curx, cury, s); |
239 |
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} |
240 |
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241 |
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242 |
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243 |
schorsch |
1.2 |
static int del = 100; |
244 |
greg |
1.1 |
|
245 |
schorsch |
1.2 |
void |
246 |
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step( |
247 |
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int d |
248 |
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) |
249 |
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{ |
250 |
greg |
1.1 |
del = d; |
251 |
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} |
252 |
schorsch |
1.2 |
|
253 |
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void |
254 |
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arc( |
255 |
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int x, |
256 |
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int y, |
257 |
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int x0, |
258 |
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int y0, |
259 |
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int x1, |
260 |
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int y1 |
261 |
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) |
262 |
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{ |
263 |
greg |
1.1 |
double pc; |
264 |
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double sqrt(); |
265 |
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int flg,m,xc,yc,xs,ys,qs,qf; |
266 |
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float dx,dy,r; |
267 |
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char use; |
268 |
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dx = x-x0; |
269 |
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dy = y-y0; |
270 |
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r = dx*dx+dy*dy; |
271 |
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pc = r; |
272 |
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pc = sqrt(pc); |
273 |
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flg = pc/4; |
274 |
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if(flg == 0)step(1); |
275 |
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else if(flg < del)step(flg); |
276 |
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xc = xs = x0; |
277 |
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yc = ys = y0; |
278 |
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move(xs,ys); |
279 |
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if(x0 == x1 && y0 == y1)flg=0; |
280 |
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else flg=1; |
281 |
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qs = quadr(x,y,x0,y0); |
282 |
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qf = quadr(x,y,x1,y1); |
283 |
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if(abs(x-x1) < abs(y-y1)){ |
284 |
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use = 'x'; |
285 |
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if(qs == 2 || qs ==3)m = -1; |
286 |
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else m=1; |
287 |
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} |
288 |
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else { |
289 |
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use = 'y'; |
290 |
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if(qs > 2)m= -1; |
291 |
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else m= 1; |
292 |
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} |
293 |
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while(1){ |
294 |
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switch(use){ |
295 |
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case 'x': |
296 |
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if(qs == 2 || qs == 3)yc -= del; |
297 |
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else yc += del; |
298 |
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dy = yc-y; |
299 |
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pc = r-dy*dy; |
300 |
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xc = m*sqrt(pc)+x; |
301 |
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if((x < xs && x >= xc) || ( x > xs && x <= xc) || |
302 |
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(y < ys && y >= yc) || ( y > ys && y <= yc) ) |
303 |
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{ |
304 |
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if(++qs > 4)qs=1; |
305 |
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if(qs == 2 || qs == 3)m= -1; |
306 |
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else m=1; |
307 |
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flg=1; |
308 |
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} |
309 |
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cont(xc,yc); |
310 |
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xs = xc; |
311 |
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ys = yc; |
312 |
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if(qs == qf && flg == 1) |
313 |
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switch(qf){ |
314 |
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case 3: |
315 |
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case 4: |
316 |
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if(xs >= x1)return; |
317 |
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continue; |
318 |
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case 1: |
319 |
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case 2: |
320 |
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if(xs <= x1)return; |
321 |
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} |
322 |
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continue; |
323 |
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case 'y': |
324 |
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if(qs > 2)xc += del; |
325 |
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else xc -= del; |
326 |
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dx = xc-x; |
327 |
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pc = r-dx*dx; |
328 |
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yc = m*sqrt(pc)+y; |
329 |
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if((x < xs && x >= xc) || ( x > xs && x <= xc ) || |
330 |
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(y < ys && y >= yc) || (y > ys && y <= yc) ) |
331 |
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{ |
332 |
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if(++qs > 4)qs=1; |
333 |
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if(qs > 2)m = -1; |
334 |
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else m = 1; |
335 |
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flg=1; |
336 |
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} |
337 |
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cont(xc,yc); |
338 |
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xs = xc; |
339 |
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ys = yc; |
340 |
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if(qs == qf && flg == 1) |
341 |
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switch(qs){ |
342 |
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case 1: |
343 |
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case 4: |
344 |
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if(ys >= y1)return; |
345 |
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continue; |
346 |
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case 2: |
347 |
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case 3: |
348 |
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if(ys <= y1)return; |
349 |
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} |
350 |
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} |
351 |
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} |
352 |
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} |
353 |
schorsch |
1.2 |
|
354 |
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int |
355 |
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quadr( |
356 |
|
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int x, |
357 |
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int y, |
358 |
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int xp, |
359 |
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int yp |
360 |
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) |
361 |
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{ |
362 |
greg |
1.1 |
if(x < xp) |
363 |
|
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if(y <= yp)return(1); |
364 |
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else return(4); |
365 |
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else if(x > xp) |
366 |
|
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if(y < yp)return(2); |
367 |
|
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else return(3); |
368 |
|
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else if(y < yp)return(2); |
369 |
|
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else return(4); |
370 |
|
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} |
371 |
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|
372 |
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|
373 |
schorsch |
1.2 |
void |
374 |
|
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circle( |
375 |
|
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int x, |
376 |
|
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int y, |
377 |
|
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int r |
378 |
|
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) |
379 |
|
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{ |
380 |
greg |
1.1 |
arc(x,y,x+r,y,x+r,y); |
381 |
|
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} |
382 |
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383 |
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|
384 |
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|
385 |
schorsch |
1.2 |
void |
386 |
|
|
erase(void) /* erase plot */ |
387 |
greg |
1.1 |
{ |
388 |
|
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pglob(PEOP, 0200, NULL); |
389 |
|
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} |
390 |
|
|
|
391 |
|
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|
392 |
schorsch |
1.2 |
void |
393 |
|
|
linemod( /* set line mode according to s */ |
394 |
|
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char s[] |
395 |
|
|
) |
396 |
greg |
1.1 |
{ |
397 |
|
|
switch (s[2]) { |
398 |
|
|
case 'l': /* solid */ |
399 |
|
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curmod = 0; |
400 |
|
|
break; |
401 |
|
|
case 't': /* dotted */ |
402 |
|
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curmod = 1; |
403 |
|
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break; |
404 |
|
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case 'n': /* long dashed */ |
405 |
|
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curmod = 2; |
406 |
|
|
break; |
407 |
|
|
case 'o': /* short dashed (dot dashed) */ |
408 |
|
|
curmod = 3; |
409 |
|
|
break; |
410 |
|
|
default: |
411 |
|
|
error(WARNING, "unknown line mode in linemod"); |
412 |
|
|
break; |
413 |
|
|
} |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
|
417 |
schorsch |
1.2 |
void |
418 |
|
|
space( /* change space */ |
419 |
|
|
int xmn, |
420 |
|
|
int ymn, |
421 |
|
|
int xmx, |
422 |
|
|
int ymx |
423 |
|
|
) |
424 |
greg |
1.1 |
{ |
425 |
|
|
if (xmn >= xmx || ymn >= ymx) |
426 |
|
|
error(USER, "illegal space specification in space"); |
427 |
|
|
|
428 |
|
|
xmin = xmn; |
429 |
|
|
ymin = ymn; |
430 |
|
|
size = min(xmx-xmn, ymx-ymn); |
431 |
|
|
} |