Commit | Line | Data |
---|---|---|
2fb69548 TL |
1 | /* |
2 | * Reads standard graphics input | |
3 | * Makes a plot on a 200 dot-per-inch 11" wide | |
4 | * Versatek plotter. | |
5 | * | |
6 | * Creates and leaves /usr/tmp/raster (1000 blocks) | |
7 | * which is the bitmap | |
8 | */ | |
9 | #include "stdio.h" | |
10 | #include <signal.h> | |
11 | ||
12 | #define NB 88 | |
13 | #define BSIZ 512 | |
14 | #define mapx(x) ((1536*((x)-botx)/del)+centx) | |
15 | #define mapy(y) ((1536*(del-(y)+boty)/del)-centy) | |
16 | #define SOLID -1 | |
17 | #define DOTTED 014 | |
18 | #define SHORTDASHED 034 | |
19 | #define DOTDASHED 054 | |
20 | #define LONGDASHED 074 | |
21 | #define SETSTATE (('v'<<8)+1) | |
22 | ||
23 | int linmod = SOLID; | |
24 | int again; | |
25 | int done1; | |
26 | char chrtab[][16]; | |
27 | int plotcom[] = { 0200, 0, 0}; | |
28 | int eotcom[] = { 0210, 0, 0}; | |
29 | char blocks [NB][BSIZ]; | |
30 | int obuf[264]; | |
31 | int lastx; | |
32 | int lasty; | |
33 | double topx = 1536; | |
34 | double topy = 1536; | |
35 | double botx = 0; | |
36 | double boty = 0; | |
37 | int centx; | |
38 | int centy; | |
39 | double delx = 1536; | |
40 | double dely = 1536; | |
41 | double del = 1536; | |
42 | ||
43 | struct buf { | |
44 | int bno; | |
45 | char *block; | |
46 | }; | |
47 | struct buf bufs[NB]; | |
48 | ||
49 | int in, out; | |
50 | char *picture = "/usr/tmp/raster"; | |
51 | ||
52 | main(argc, argv) | |
53 | char **argv; | |
54 | { | |
55 | extern int onintr(); | |
56 | register i; | |
57 | ||
58 | if (argc>1) { | |
59 | in = open(argv[1], 0); | |
60 | putpict(); | |
61 | exit(0); | |
62 | } | |
63 | signal(SIGTERM, onintr); | |
64 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
65 | signal(SIGINT, onintr); | |
66 | another: | |
67 | for (i=0; i<NB; i++) { | |
68 | bufs[i].bno = -1; | |
69 | bufs[i].block = blocks[i]; | |
70 | } | |
71 | out = creat(picture, 0666); | |
72 | in = open(picture, 0); | |
73 | zseek(out, 32*32); | |
74 | write(out, blocks[0], BSIZ); | |
75 | /*delete following code when filsys deals properly with | |
76 | holes in files*/ | |
77 | for(i=0;i<512;i++) | |
78 | blocks[0][i] = 0; | |
79 | zseek(out, 0); | |
80 | for(i=0;i<32*32;i++) | |
81 | write(out,blocks[0],512); | |
82 | /**/ | |
83 | getpict(); | |
84 | for (i=0; i<NB; i++) | |
85 | if (bufs[i].bno != -1) { | |
86 | zseek(out, bufs[i].bno); | |
87 | write(out, bufs[i].block, BSIZ); | |
88 | } | |
89 | putpict(); | |
90 | if (again) { | |
91 | close(in); | |
92 | close(out); | |
93 | goto another; | |
94 | } | |
95 | exit(0); | |
96 | } | |
97 | ||
98 | getpict() | |
99 | { | |
100 | register x1, y1; | |
101 | ||
102 | again = 0; | |
103 | for (;;) switch (x1 = getc(stdin)) { | |
104 | ||
105 | case 's': | |
106 | botx = getw(stdin); | |
107 | boty = getw(stdin); | |
108 | topx = getw(stdin); | |
109 | topy = getw(stdin); | |
110 | delx = topx-botx; | |
111 | dely = topy-boty; | |
112 | if (dely/delx > 1536./2048.) | |
113 | del = dely; | |
114 | else | |
115 | del = delx * (1566./2048.); | |
116 | centx = 0; | |
117 | centx = (2048 - mapx(topx)) / 2; | |
118 | centy = 0; | |
119 | centy = mapy(topy) / 2; | |
120 | continue; | |
121 | ||
122 | case 'l': | |
123 | done1 |= 01; | |
124 | x1 = mapx(getw(stdin)); | |
125 | y1 = mapy(getw(stdin)); | |
126 | lastx = mapx(getw(stdin)); | |
127 | lasty = mapy(getw(stdin)); | |
128 | line(x1, y1, lastx, lasty); | |
129 | continue; | |
130 | ||
131 | case 'm': | |
132 | lastx = mapx(getw(stdin)); | |
133 | lasty = mapy(getw(stdin)); | |
134 | continue; | |
135 | ||
136 | case 't': | |
137 | done1 |= 01; | |
138 | while ((x1 = getc(stdin)) != '\n') | |
139 | plotch(x1); | |
140 | continue; | |
141 | ||
142 | case 'e': | |
143 | if (done1) { | |
144 | again++; | |
145 | return; | |
146 | } | |
147 | continue; | |
148 | ||
149 | case 'p': | |
150 | done1 |= 01; | |
151 | lastx = mapx(getw(stdin)); | |
152 | lasty = mapy(getw(stdin)); | |
153 | point(lastx, lasty); | |
154 | point(lastx+1, lasty); | |
155 | point(lastx, lasty+1); | |
156 | point(lastx+1, lasty+1); | |
157 | continue; | |
158 | ||
159 | case 'n': | |
160 | done1 |= 01; | |
161 | x1 = mapx(getw(stdin)); | |
162 | y1 = mapy(getw(stdin)); | |
163 | line(lastx, lasty, x1, y1); | |
164 | lastx = x1; | |
165 | lasty = y1; | |
166 | continue; | |
167 | ||
168 | case 'f': | |
169 | getw(stdin); | |
170 | getc(stdin); | |
171 | switch(getc(stdin)) { | |
172 | case 't': | |
173 | linmod = DOTTED; | |
174 | break; | |
175 | default: | |
176 | case 'i': | |
177 | linmod = SOLID; | |
178 | break; | |
179 | case 'g': | |
180 | linmod = LONGDASHED; | |
181 | break; | |
182 | case 'r': | |
183 | linmod = SHORTDASHED; | |
184 | break; | |
185 | case 'd': | |
186 | linmod = DOTDASHED; | |
187 | break; | |
188 | } | |
189 | while((x1=getc(stdin))!='\n') | |
190 | if(x1==-1) return; | |
191 | continue; | |
192 | ||
193 | case 'd': | |
194 | getw(stdin); | |
195 | getw(stdin); | |
196 | getw(stdin); | |
197 | x1 = getw(stdin); | |
198 | while (--x1 >= 0) | |
199 | getw(stdin); | |
200 | continue; | |
201 | ||
202 | case -1: | |
203 | return; | |
204 | ||
205 | default: | |
206 | printf("Botch\n"); | |
207 | return; | |
208 | } | |
209 | } | |
210 | ||
211 | plotch(c) | |
212 | register c; | |
213 | { | |
214 | register j; | |
215 | register char *cp; | |
216 | int i; | |
217 | ||
218 | if (c<' ' || c >0177) | |
219 | return; | |
220 | cp = chrtab[c-' ']; | |
221 | for (i = -16; i<16; i += 2) { | |
222 | c = *cp++; | |
223 | for (j=7; j>=0; --j) | |
224 | if ((c>>j)&1) { | |
225 | point(lastx+6-j*2, lasty+i); | |
226 | point(lastx+7-j*2, lasty+i); | |
227 | point(lastx+6-j*2, lasty+i+1); | |
228 | point(lastx+7-j*2, lasty+i+1); | |
229 | } | |
230 | } | |
231 | lastx += 16; | |
232 | } | |
233 | ||
234 | int f; /* versatec file number */ | |
235 | putpict() | |
236 | { | |
237 | register x, *ip, *op; | |
238 | int y; | |
239 | ||
240 | if (f==0){ | |
241 | f = open("/dev/vp0", 1); | |
242 | if (f < 0) { | |
243 | printf("Cannot open vp\n"); | |
244 | exit(1); | |
245 | } | |
246 | ioctl(f, SETSTATE, plotcom); | |
247 | } | |
248 | op = obuf; | |
249 | lseek(in, 0L, 0); | |
250 | for (y=0; y<2048; y++) { | |
251 | if ((y&077) == 0) | |
252 | read(in, blocks[0], 32*BSIZ); | |
253 | for (x=0; x<32; x++) { | |
254 | ip = (int *)&blocks[x][(y&077)<<3]; | |
255 | *op++ = *ip++; | |
256 | *op++ = *ip++; | |
257 | *op++ = *ip++; | |
258 | *op++ = *ip++; | |
259 | } | |
260 | *op++ = 0; | |
261 | *op++ = 0; | |
262 | *op++ = 0; | |
263 | *op++ = 0; | |
264 | if (y&1) { | |
265 | write(f, (char *)obuf, sizeof(obuf)); | |
266 | op = obuf; | |
267 | } | |
268 | } | |
269 | } | |
270 | ||
271 | line(x0, y0, x1, y1) | |
272 | register x0, y0; | |
273 | { | |
274 | int dx, dy; | |
275 | int xinc, yinc; | |
276 | register res1; | |
277 | int res2; | |
278 | int slope; | |
279 | ||
280 | xinc = 1; | |
281 | yinc = 1; | |
282 | if ((dx = x1-x0) < 0) { | |
283 | xinc = -1; | |
284 | dx = -dx; | |
285 | } | |
286 | if ((dy = y1-y0) < 0) { | |
287 | yinc = -1; | |
288 | dy = -dy; | |
289 | } | |
290 | slope = xinc*yinc; | |
291 | res1 = 0; | |
292 | res2 = 0; | |
293 | if (dx >= dy) while (x0 != x1) { | |
294 | if((x0+slope*y0)&linmod) | |
295 | if (((x0>>6) + ((y0&~077)>>1)) == bufs[0].bno) | |
296 | bufs[0].block[((y0&077)<<3)+((x0>>3)&07)] |= 1 << (7-(x0&07)); | |
297 | else | |
298 | point(x0, y0); | |
299 | if (res1 > res2) { | |
300 | res2 += dx - res1; | |
301 | res1 = 0; | |
302 | y0 += yinc; | |
303 | } | |
304 | res1 += dy; | |
305 | x0 += xinc; | |
306 | } else while (y0 != y1) { | |
307 | if((x0+slope*y0)&linmod) | |
308 | if (((x0>>6) + ((y0&~077)>>1)) == bufs[0].bno) | |
309 | bufs[0].block[((y0&077)<<3)+((x0>>3)&07)] |= 1 << (7-(x0&07)); | |
310 | else | |
311 | point(x0, y0); | |
312 | if (res1 > res2) { | |
313 | res2 += dy - res1; | |
314 | res1 = 0; | |
315 | x0 += xinc; | |
316 | } | |
317 | res1 += dx; | |
318 | y0 += yinc; | |
319 | } | |
320 | if((x1+slope*y1)&linmod) | |
321 | if (((x1>>6) + ((y1&~077)>>1)) == bufs[0].bno) | |
322 | bufs[0].block[((y1&077)<<3)+((x1>>3)&07)] |= 1 << (7-(x1&07)); | |
323 | else | |
324 | point(x1, y1); | |
325 | } | |
326 | ||
327 | point(x, y) | |
328 | register x, y; | |
329 | { | |
330 | register bno; | |
331 | ||
332 | bno = ((x&03700)>>6) + ((y&03700)>>1); | |
333 | if (bno != bufs[0].bno) { | |
334 | if (bno < 0 || bno >= 1024) | |
335 | return; | |
336 | getblk(bno); | |
337 | } | |
338 | bufs[0].block[((y&077)<<3)+((x>>3)&07)] |= 1 << (7-(x&07)); | |
339 | } | |
340 | ||
341 | getblk(b) | |
342 | register b; | |
343 | { | |
344 | register struct buf *bp1, *bp2; | |
345 | register char *tp; | |
346 | ||
347 | loop: | |
348 | for (bp1 = bufs; bp1 < &bufs[NB]; bp1++) { | |
349 | if (bp1->bno == b || bp1->bno == -1) { | |
350 | tp = bp1->block; | |
351 | for (bp2 = bp1; bp2>bufs; --bp2) { | |
352 | bp2->bno = (bp2-1)->bno; | |
353 | bp2->block = (bp2-1)->block; | |
354 | } | |
355 | bufs[0].bno = b; | |
356 | bufs[0].block = tp; | |
357 | return; | |
358 | } | |
359 | } | |
360 | zseek(out, bufs[NB-1].bno); | |
361 | write(out, bufs[NB-1].block, BSIZ); | |
362 | zseek(in, b); | |
363 | read(in, bufs[NB-1].block, BSIZ); | |
364 | bufs[NB-1].bno = b; | |
365 | goto loop; | |
366 | } | |
367 | ||
368 | onintr() | |
369 | { | |
370 | exit(1); | |
371 | } | |
372 | ||
373 | zseek(a, b) | |
374 | { | |
375 | return(lseek(a, (long)b*512, 0)); | |
376 | } |