1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.29 |
static const char RCSid[] = "$Id: rview.c,v 2.28 2005/06/13 20:07:56 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* rview.c - routines and variables for interactive view generation. |
6 |
|
|
* |
7 |
greg |
2.18 |
* External symbols declared in rpaint.h |
8 |
|
|
*/ |
9 |
|
|
|
10 |
greg |
2.19 |
#include "copyright.h" |
11 |
greg |
1.1 |
|
12 |
schorsch |
2.20 |
#include <signal.h> |
13 |
|
|
#include <ctype.h> |
14 |
|
|
|
15 |
greg |
1.15 |
#include "ray.h" |
16 |
greg |
1.1 |
#include "rpaint.h" |
17 |
|
|
|
18 |
greg |
2.8 |
#define CTRL(c) ((c)-'@') |
19 |
greg |
1.1 |
|
20 |
|
|
|
21 |
greg |
2.18 |
void |
22 |
greg |
2.29 |
devopen( /* open device driver */ |
23 |
|
|
char *dname |
24 |
|
|
) |
25 |
greg |
1.1 |
{ |
26 |
greg |
1.6 |
extern char *progname, *octname; |
27 |
greg |
1.7 |
char *id; |
28 |
greg |
2.29 |
int i; |
29 |
greg |
1.6 |
|
30 |
greg |
1.7 |
id = octname!=NULL ? octname : progname; |
31 |
greg |
1.1 |
/* check device table */ |
32 |
|
|
for (i = 0; devtable[i].name; i++) |
33 |
schorsch |
2.23 |
if (!strcmp(dname, devtable[i].name)) { |
34 |
greg |
1.7 |
if ((dev = (*devtable[i].init)(dname, id)) == NULL) { |
35 |
greg |
1.1 |
sprintf(errmsg, "cannot initialize %s", dname); |
36 |
|
|
error(USER, errmsg); |
37 |
|
|
} else |
38 |
|
|
return; |
39 |
schorsch |
2.23 |
} |
40 |
greg |
1.1 |
/* not there, try exec */ |
41 |
greg |
1.7 |
if ((dev = comm_init(dname, id)) == NULL) { |
42 |
greg |
1.1 |
sprintf(errmsg, "cannot start device \"%s\"", dname); |
43 |
|
|
error(USER, errmsg); |
44 |
|
|
} |
45 |
|
|
} |
46 |
|
|
|
47 |
|
|
|
48 |
greg |
2.18 |
void |
49 |
greg |
2.29 |
devclose(void) /* close our device */ |
50 |
greg |
1.1 |
{ |
51 |
|
|
if (dev != NULL) |
52 |
|
|
(*dev->close)(); |
53 |
|
|
dev = NULL; |
54 |
|
|
} |
55 |
|
|
|
56 |
|
|
|
57 |
greg |
2.18 |
void |
58 |
greg |
2.29 |
printdevices(void) /* print list of output devices */ |
59 |
greg |
1.1 |
{ |
60 |
greg |
2.29 |
int i; |
61 |
greg |
1.1 |
|
62 |
|
|
for (i = 0; devtable[i].name; i++) |
63 |
|
|
printf("%-16s # %s\n", devtable[i].name, devtable[i].descrip); |
64 |
|
|
} |
65 |
|
|
|
66 |
|
|
|
67 |
greg |
2.18 |
void |
68 |
greg |
2.29 |
rview(void) /* do a view */ |
69 |
greg |
1.1 |
{ |
70 |
|
|
char buf[32]; |
71 |
|
|
|
72 |
greg |
2.18 |
devopen(dvcname); /* open device */ |
73 |
greg |
2.29 |
newimage(NULL); /* start image */ |
74 |
greg |
1.14 |
|
75 |
greg |
1.1 |
for ( ; ; ) { /* quit in command() */ |
76 |
greg |
1.14 |
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
77 |
greg |
1.1 |
command("done: "); |
78 |
greg |
1.14 |
errno = 0; |
79 |
|
|
if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) { |
80 |
greg |
1.1 |
sprintf(buf, "%d sampling...\n", 1<<pdepth); |
81 |
|
|
(*dev->comout)(buf); |
82 |
|
|
rsample(); |
83 |
|
|
} else { |
84 |
|
|
sprintf(buf, "%d refining...\n", 1<<pdepth); |
85 |
|
|
(*dev->comout)(buf); |
86 |
greg |
2.29 |
refine(&ptrunk, pdepth+1); |
87 |
greg |
1.1 |
} |
88 |
greg |
2.29 |
if (waitrays() < 0) |
89 |
|
|
quit(1); |
90 |
|
|
if (dev->inpready) /* noticed some input */ |
91 |
greg |
1.1 |
command(": "); |
92 |
greg |
1.14 |
else /* finished this depth */ |
93 |
greg |
1.1 |
pdepth++; |
94 |
|
|
} |
95 |
|
|
} |
96 |
|
|
|
97 |
|
|
|
98 |
greg |
2.18 |
void |
99 |
greg |
2.29 |
command( /* get/execute command */ |
100 |
|
|
char *prompt |
101 |
|
|
) |
102 |
greg |
1.1 |
{ |
103 |
greg |
2.8 |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
104 |
greg |
1.1 |
char inpbuf[256]; |
105 |
|
|
char *args; |
106 |
|
|
again: |
107 |
greg |
1.10 |
(*dev->comin)(inpbuf, prompt); /* get command + arguments */ |
108 |
greg |
1.1 |
for (args = inpbuf; *args && *args != ' '; args++) |
109 |
|
|
; |
110 |
|
|
if (*args) *args++ = '\0'; |
111 |
|
|
else *++args = '\0'; |
112 |
|
|
|
113 |
|
|
switch (inpbuf[0]) { |
114 |
greg |
2.27 |
case 'f': /* new frame (|focus|free) */ |
115 |
greg |
2.10 |
if (badcom("frame")) { |
116 |
greg |
2.27 |
if (badcom("focus")) { |
117 |
|
|
if (badcom("free")) |
118 |
|
|
goto commerr; |
119 |
|
|
free_objmem(); |
120 |
|
|
break; |
121 |
|
|
} |
122 |
|
|
getfocus(args); |
123 |
greg |
2.10 |
break; |
124 |
|
|
} |
125 |
greg |
1.1 |
getframe(args); |
126 |
|
|
break; |
127 |
|
|
case 'v': /* view */ |
128 |
|
|
if (badcom("view")) |
129 |
|
|
goto commerr; |
130 |
|
|
getview(args); |
131 |
|
|
break; |
132 |
|
|
case 'l': /* last view */ |
133 |
|
|
if (badcom("last")) |
134 |
|
|
goto commerr; |
135 |
|
|
lastview(args); |
136 |
greg |
2.11 |
break; |
137 |
|
|
case 'V': /* save view */ |
138 |
|
|
if (badcom("V")) |
139 |
|
|
goto commerr; |
140 |
|
|
saveview(args); |
141 |
|
|
break; |
142 |
|
|
case 'L': /* load view */ |
143 |
|
|
if (badcom("L")) |
144 |
|
|
goto commerr; |
145 |
|
|
loadview(args); |
146 |
greg |
1.1 |
break; |
147 |
|
|
case 'e': /* exposure */ |
148 |
|
|
if (badcom("exposure")) |
149 |
|
|
goto commerr; |
150 |
|
|
getexposure(args); |
151 |
|
|
break; |
152 |
|
|
case 's': /* set a parameter */ |
153 |
greg |
2.13 |
if (badcom("set")) { |
154 |
|
|
#ifdef SIGTSTP |
155 |
|
|
if (!badcom("stop")) |
156 |
|
|
goto dostop; |
157 |
|
|
#endif |
158 |
greg |
1.1 |
goto commerr; |
159 |
greg |
2.13 |
} |
160 |
greg |
1.1 |
setparam(args); |
161 |
|
|
break; |
162 |
|
|
case 'n': /* new picture */ |
163 |
|
|
if (badcom("new")) |
164 |
|
|
goto commerr; |
165 |
greg |
2.29 |
newimage(args); |
166 |
greg |
1.1 |
break; |
167 |
|
|
case 't': /* trace a ray */ |
168 |
|
|
if (badcom("trace")) |
169 |
|
|
goto commerr; |
170 |
|
|
traceray(args); |
171 |
|
|
break; |
172 |
|
|
case 'a': /* aim camera */ |
173 |
|
|
if (badcom("aim")) |
174 |
|
|
goto commerr; |
175 |
|
|
getaim(args); |
176 |
|
|
break; |
177 |
greg |
2.10 |
case 'm': /* move camera (or memstats) */ |
178 |
greg |
1.1 |
if (badcom("move")) |
179 |
greg |
2.8 |
#ifdef MSTATS |
180 |
greg |
2.2 |
{ |
181 |
|
|
if (badcom("memory")) |
182 |
|
|
goto commerr; |
183 |
|
|
printmemstats(stderr); |
184 |
|
|
break; |
185 |
|
|
} |
186 |
|
|
#else |
187 |
greg |
1.1 |
goto commerr; |
188 |
greg |
2.2 |
#endif |
189 |
greg |
1.1 |
getmove(args); |
190 |
|
|
break; |
191 |
greg |
1.8 |
case 'r': /* rotate/repaint */ |
192 |
|
|
if (badcom("rotate")) { |
193 |
greg |
2.13 |
if (badcom("repaint")) { |
194 |
|
|
if (badcom("redraw")) |
195 |
|
|
goto commerr; |
196 |
|
|
redraw(); |
197 |
|
|
break; |
198 |
|
|
} |
199 |
greg |
1.8 |
getrepaint(args); |
200 |
|
|
break; |
201 |
|
|
} |
202 |
greg |
1.1 |
getrotate(args); |
203 |
|
|
break; |
204 |
|
|
case 'p': /* pivot view */ |
205 |
greg |
2.13 |
if (badcom("pivot")) { |
206 |
|
|
if (badcom("pause")) |
207 |
|
|
goto commerr; |
208 |
|
|
goto again; |
209 |
|
|
} |
210 |
greg |
1.1 |
getpivot(args); |
211 |
|
|
break; |
212 |
greg |
2.4 |
case CTRL('R'): /* redraw */ |
213 |
greg |
1.1 |
redraw(); |
214 |
|
|
break; |
215 |
|
|
case 'w': /* write */ |
216 |
|
|
if (badcom("write")) |
217 |
|
|
goto commerr; |
218 |
|
|
writepict(args); |
219 |
|
|
break; |
220 |
|
|
case 'q': /* quit */ |
221 |
|
|
if (badcom("quit")) |
222 |
|
|
goto commerr; |
223 |
|
|
quit(0); |
224 |
greg |
2.4 |
case CTRL('C'): /* interrupt */ |
225 |
greg |
1.1 |
goto again; |
226 |
greg |
2.8 |
#ifdef SIGTSTP |
227 |
greg |
2.13 |
case CTRL('Z'):; /* stop */ |
228 |
|
|
dostop: |
229 |
greg |
1.1 |
devclose(); |
230 |
|
|
kill(0, SIGTSTP); |
231 |
|
|
/* pc stops here */ |
232 |
greg |
2.18 |
devopen(dvcname); |
233 |
greg |
1.1 |
redraw(); |
234 |
|
|
break; |
235 |
|
|
#endif |
236 |
|
|
case '\0': /* continue */ |
237 |
|
|
break; |
238 |
|
|
default:; |
239 |
|
|
commerr: |
240 |
|
|
if (iscntrl(inpbuf[0])) |
241 |
|
|
sprintf(errmsg, "^%c: unknown control", |
242 |
|
|
inpbuf[0]|0100); |
243 |
|
|
else |
244 |
|
|
sprintf(errmsg, "%s: unknown command", inpbuf); |
245 |
|
|
error(COMMAND, errmsg); |
246 |
|
|
break; |
247 |
|
|
} |
248 |
greg |
2.8 |
#undef badcom |
249 |
greg |
1.1 |
} |
250 |
|
|
|
251 |
|
|
|
252 |
greg |
2.18 |
void |
253 |
greg |
2.29 |
rsample(void) /* sample the image */ |
254 |
greg |
1.1 |
{ |
255 |
|
|
int xsiz, ysiz, y; |
256 |
|
|
PNODE *p; |
257 |
greg |
2.29 |
PNODE **pl; |
258 |
|
|
int x; |
259 |
greg |
1.1 |
/* |
260 |
|
|
* We initialize the bottom row in the image at our current |
261 |
greg |
2.8 |
* resolution. During sampling, we check super-pixels to the |
262 |
greg |
1.1 |
* right and above by calling bigdiff(). If there is a significant |
263 |
|
|
* difference, we subsample the super-pixels. The testing process |
264 |
|
|
* includes initialization of the next row. |
265 |
|
|
*/ |
266 |
greg |
2.12 |
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
267 |
|
|
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
268 |
greg |
1.1 |
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
269 |
greg |
2.29 |
if (pl == NULL) |
270 |
greg |
1.14 |
return; |
271 |
greg |
1.1 |
/* |
272 |
|
|
* Initialize the bottom row. |
273 |
|
|
*/ |
274 |
greg |
2.29 |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, pdepth); |
275 |
greg |
1.1 |
for (x = 1; x < xsiz; x++) { |
276 |
greg |
1.9 |
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
277 |
greg |
2.29 |
pframe.d, &ptrunk, pdepth); |
278 |
greg |
1.1 |
} |
279 |
|
|
/* sample the image */ |
280 |
|
|
for (y = 0; /* y < ysiz */ ; y++) { |
281 |
|
|
for (x = 0; x < xsiz-1; x++) { |
282 |
greg |
1.20 |
if (dev->inpready || errno == ENOMEM) |
283 |
greg |
1.1 |
goto escape; |
284 |
|
|
/* |
285 |
|
|
* Test super-pixel to the right. |
286 |
|
|
*/ |
287 |
|
|
if (pl[x] != pl[x+1] && bigdiff(pl[x]->v, |
288 |
|
|
pl[x+1]->v, maxdiff)) { |
289 |
greg |
2.29 |
refine(pl[x], 1); |
290 |
|
|
refine(pl[x+1], 1); |
291 |
greg |
1.1 |
} |
292 |
|
|
} |
293 |
|
|
if (y >= ysiz-1) |
294 |
|
|
break; |
295 |
|
|
for (x = 0; x < xsiz; x++) { |
296 |
greg |
1.20 |
if (dev->inpready || errno == ENOMEM) |
297 |
greg |
1.1 |
goto escape; |
298 |
|
|
/* |
299 |
|
|
* Find super-pixel at this position in next row. |
300 |
|
|
*/ |
301 |
greg |
1.9 |
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
302 |
|
|
pframe.d+(((y+1)*vresolu)>>pdepth), |
303 |
greg |
2.29 |
&ptrunk, pdepth); |
304 |
greg |
1.1 |
/* |
305 |
|
|
* Test super-pixel in next row. |
306 |
|
|
*/ |
307 |
|
|
if (pl[x] != p && bigdiff(pl[x]->v, p->v, maxdiff)) { |
308 |
greg |
2.29 |
refine(pl[x], 1); |
309 |
|
|
refine(p, 1); |
310 |
greg |
1.1 |
} |
311 |
|
|
/* |
312 |
|
|
* Copy into super-pixel array. |
313 |
|
|
*/ |
314 |
|
|
pl[x] = p; |
315 |
|
|
} |
316 |
|
|
} |
317 |
|
|
escape: |
318 |
greg |
2.18 |
free((void *)pl); |
319 |
greg |
1.1 |
} |
320 |
|
|
|
321 |
|
|
|
322 |
|
|
int |
323 |
greg |
2.29 |
refine( /* refine a node */ |
324 |
|
|
PNODE *p, |
325 |
|
|
int pd |
326 |
|
|
) |
327 |
greg |
1.1 |
{ |
328 |
|
|
int growth; |
329 |
|
|
int mx, my; |
330 |
|
|
int i; |
331 |
|
|
|
332 |
|
|
if (dev->inpready) /* quit for input */ |
333 |
|
|
return(0); |
334 |
|
|
|
335 |
|
|
if (pd <= 0) /* depth limit */ |
336 |
|
|
return(0); |
337 |
|
|
|
338 |
greg |
2.29 |
mx = (p->xmin + p->xmax) >> 1; |
339 |
|
|
my = (p->ymin + p->ymax) >> 1; |
340 |
greg |
1.1 |
growth = 0; |
341 |
|
|
|
342 |
|
|
if (p->kid == NULL) { /* subdivide */ |
343 |
|
|
|
344 |
|
|
if ((p->kid = newptree()) == NULL) |
345 |
greg |
1.20 |
return(0); |
346 |
greg |
2.29 |
|
347 |
|
|
p->kid[UR].xmin = mx; |
348 |
|
|
p->kid[UR].ymin = my; |
349 |
|
|
p->kid[UR].xmax = p->xmax; |
350 |
|
|
p->kid[UR].ymax = p->ymax; |
351 |
|
|
p->kid[UL].xmin = p->xmin; |
352 |
|
|
p->kid[UL].ymin = my; |
353 |
|
|
p->kid[UL].xmax = mx; |
354 |
|
|
p->kid[UL].ymax = p->ymax; |
355 |
|
|
p->kid[DR].xmin = mx; |
356 |
|
|
p->kid[DR].ymin = p->ymin; |
357 |
|
|
p->kid[DR].xmax = p->xmax; |
358 |
|
|
p->kid[DR].ymax = my; |
359 |
|
|
p->kid[DL].xmin = p->xmin; |
360 |
|
|
p->kid[DL].ymin = p->ymin; |
361 |
|
|
p->kid[DL].xmax = mx; |
362 |
|
|
p->kid[DL].ymax = my; |
363 |
greg |
1.1 |
/* |
364 |
|
|
* The following paint order can leave a black pixel |
365 |
greg |
2.7 |
* if redraw() is called in (*dev->paintr)(). |
366 |
greg |
1.1 |
*/ |
367 |
|
|
if (p->x >= mx && p->y >= my) |
368 |
|
|
pcopy(p, p->kid+UR); |
369 |
greg |
2.29 |
else if (paint(p->kid+UR) < 0) |
370 |
|
|
quit(1); |
371 |
greg |
1.1 |
if (p->x < mx && p->y >= my) |
372 |
|
|
pcopy(p, p->kid+UL); |
373 |
greg |
2.29 |
else if (paint(p->kid+UL) < 0) |
374 |
|
|
quit(1); |
375 |
greg |
1.1 |
if (p->x >= mx && p->y < my) |
376 |
|
|
pcopy(p, p->kid+DR); |
377 |
greg |
2.29 |
else if (paint(p->kid+DR) < 0) |
378 |
|
|
quit(1); |
379 |
greg |
1.1 |
if (p->x < mx && p->y < my) |
380 |
|
|
pcopy(p, p->kid+DL); |
381 |
greg |
2.29 |
else if (paint(p->kid+DL) < 0) |
382 |
|
|
quit(1); |
383 |
greg |
1.1 |
|
384 |
|
|
growth++; |
385 |
|
|
} |
386 |
|
|
/* do children */ |
387 |
|
|
if (mx > pframe.l) { |
388 |
|
|
if (my > pframe.d) |
389 |
greg |
2.29 |
growth += refine(p->kid+DL, pd-1); |
390 |
greg |
1.1 |
if (my < pframe.u) |
391 |
greg |
2.29 |
growth += refine(p->kid+UL, pd-1); |
392 |
greg |
1.1 |
} |
393 |
|
|
if (mx < pframe.r) { |
394 |
|
|
if (my > pframe.d) |
395 |
greg |
2.29 |
growth += refine(p->kid+DR, pd-1); |
396 |
greg |
1.1 |
if (my < pframe.u) |
397 |
greg |
2.29 |
growth += refine(p->kid+UR, pd-1); |
398 |
greg |
1.1 |
} |
399 |
|
|
/* recompute sum */ |
400 |
|
|
if (growth) { |
401 |
|
|
setcolor(p->v, 0.0, 0.0, 0.0); |
402 |
|
|
for (i = 0; i < 4; i++) |
403 |
|
|
addcolor(p->v, p->kid[i].v); |
404 |
|
|
scalecolor(p->v, 0.25); |
405 |
|
|
} |
406 |
|
|
return(growth); |
407 |
|
|
} |