1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.26 |
static const char RCSid[] = "$Id: rview.c,v 2.25 2004/03/28 16:31:14 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
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* rview.c - routines and variables for interactive view generation. |
6 |
|
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* |
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 |
|
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#include <ctype.h> |
14 |
|
|
|
15 |
greg |
1.15 |
#include "ray.h" |
16 |
greg |
1.1 |
#include "rpaint.h" |
17 |
|
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|
18 |
|
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|
19 |
greg |
2.18 |
CUBE thescene; /* our scene */ |
20 |
|
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OBJECT nsceneobjs; /* number of objects in our scene */ |
21 |
greg |
1.15 |
|
22 |
|
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int dimlist[MAXDIM]; /* sampling dimensions */ |
23 |
|
|
int ndims = 0; /* number of sampling dimensions */ |
24 |
|
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int samplendx = 0; /* index for this sample */ |
25 |
greg |
1.1 |
|
26 |
greg |
2.18 |
extern void ambnotify(); |
27 |
|
|
void (*addobjnotify[])() = {ambnotify, NULL}; |
28 |
|
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|
29 |
|
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VIEW ourview = STDVIEW; /* viewing parameters */ |
30 |
|
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int hresolu, vresolu; /* image resolution */ |
31 |
|
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|
32 |
|
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void (*trace)() = NULL; /* trace call */ |
33 |
|
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|
34 |
|
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int do_irrad = 0; /* compute irradiance? */ |
35 |
|
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|
36 |
greg |
1.1 |
int psample = 8; /* pixel sample size */ |
37 |
greg |
2.8 |
double maxdiff = .15; /* max. sample difference */ |
38 |
greg |
1.1 |
|
39 |
greg |
2.8 |
double exposure = 1.0; /* exposure for scene */ |
40 |
greg |
1.1 |
|
41 |
greg |
2.8 |
double dstrsrc = 0.0; /* square source distribution */ |
42 |
|
|
double shadthresh = .1; /* shadow threshold */ |
43 |
|
|
double shadcert = .25; /* shadow certainty */ |
44 |
greg |
1.16 |
int directrelay = 0; /* number of source relays */ |
45 |
greg |
1.18 |
int vspretest = 128; /* virtual source pretest density */ |
46 |
greg |
2.9 |
int directvis = 1; /* sources visible? */ |
47 |
greg |
2.8 |
double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
48 |
greg |
2.15 |
|
49 |
|
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
50 |
greg |
2.17 |
COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
51 |
greg |
2.15 |
double seccg = 0.; /* global scattering eccentricity */ |
52 |
|
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double ssampdist = 0.; /* scatter sampling distance */ |
53 |
greg |
1.1 |
|
54 |
greg |
2.8 |
double specthresh = .3; /* specular sampling threshold */ |
55 |
|
|
double specjitter = 1.; /* specular sampling jitter */ |
56 |
greg |
2.5 |
|
57 |
greg |
2.14 |
int backvis = 1; /* back face visibility */ |
58 |
|
|
|
59 |
greg |
2.24 |
int maxdepth = 6; /* maximum recursion depth */ |
60 |
greg |
2.8 |
double minweight = 1e-2; /* minimum ray weight */ |
61 |
greg |
1.1 |
|
62 |
greg |
2.18 |
char *ambfile = NULL; /* ambient file name */ |
63 |
greg |
1.1 |
COLOR ambval = BLKCOLOR; /* ambient value */ |
64 |
greg |
2.16 |
int ambvwt = 0; /* initial weight for ambient value */ |
65 |
greg |
2.25 |
double ambacc = 0.3; /* ambient accuracy */ |
66 |
greg |
2.24 |
int ambres = 32; /* ambient resolution */ |
67 |
greg |
2.25 |
int ambdiv = 256; /* ambient divisions */ |
68 |
|
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int ambssamp = 64; /* ambient super-samples */ |
69 |
greg |
1.1 |
int ambounce = 0; /* ambient bounces */ |
70 |
greg |
2.26 |
char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
71 |
greg |
1.1 |
int ambincl = -1; /* include == 1, exclude == 0 */ |
72 |
|
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|
73 |
|
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int greyscale = 0; /* map colors to brightness? */ |
74 |
greg |
2.18 |
char *dvcname = dev_default; /* output device name */ |
75 |
greg |
1.1 |
|
76 |
|
|
struct driver *dev = NULL; /* driver functions */ |
77 |
|
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|
78 |
greg |
2.11 |
char rifname[128]; /* rad input file name */ |
79 |
|
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|
80 |
greg |
1.1 |
VIEW oldview; /* previous view parameters */ |
81 |
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|
82 |
|
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PNODE ptrunk; /* the base of our image */ |
83 |
|
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RECT pframe; /* current frame boundaries */ |
84 |
|
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int pdepth; /* image depth in current frame */ |
85 |
|
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|
86 |
greg |
1.12 |
static char *reserve_mem = NULL; /* pre-allocated reserve memory */ |
87 |
|
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|
88 |
greg |
1.20 |
#define RESERVE_AMT 32768 /* amount of memory to reserve */ |
89 |
greg |
1.12 |
|
90 |
greg |
2.8 |
#define CTRL(c) ((c)-'@') |
91 |
greg |
1.1 |
|
92 |
|
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|
93 |
greg |
2.18 |
void |
94 |
greg |
1.1 |
quit(code) /* quit program */ |
95 |
|
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int code; |
96 |
|
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{ |
97 |
greg |
2.10 |
#ifdef MSTATS |
98 |
|
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if (code == 2 && errno == ENOMEM) |
99 |
|
|
printmemstats(stderr); |
100 |
|
|
#endif |
101 |
greg |
1.1 |
devclose(); |
102 |
|
|
exit(code); |
103 |
|
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} |
104 |
|
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|
105 |
|
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|
106 |
greg |
2.18 |
void |
107 |
greg |
1.1 |
devopen(dname) /* open device driver */ |
108 |
|
|
char *dname; |
109 |
|
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{ |
110 |
greg |
1.6 |
extern char *progname, *octname; |
111 |
greg |
1.7 |
char *id; |
112 |
greg |
1.1 |
register int i; |
113 |
greg |
1.6 |
|
114 |
greg |
1.7 |
id = octname!=NULL ? octname : progname; |
115 |
greg |
1.1 |
/* check device table */ |
116 |
|
|
for (i = 0; devtable[i].name; i++) |
117 |
schorsch |
2.23 |
if (!strcmp(dname, devtable[i].name)) { |
118 |
greg |
1.7 |
if ((dev = (*devtable[i].init)(dname, id)) == NULL) { |
119 |
greg |
1.1 |
sprintf(errmsg, "cannot initialize %s", dname); |
120 |
|
|
error(USER, errmsg); |
121 |
|
|
} else |
122 |
|
|
return; |
123 |
schorsch |
2.23 |
} |
124 |
greg |
1.1 |
/* not there, try exec */ |
125 |
greg |
1.7 |
if ((dev = comm_init(dname, id)) == NULL) { |
126 |
greg |
1.1 |
sprintf(errmsg, "cannot start device \"%s\"", dname); |
127 |
|
|
error(USER, errmsg); |
128 |
|
|
} |
129 |
|
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} |
130 |
|
|
|
131 |
|
|
|
132 |
greg |
2.18 |
void |
133 |
greg |
1.1 |
devclose() /* close our device */ |
134 |
|
|
{ |
135 |
|
|
if (dev != NULL) |
136 |
|
|
(*dev->close)(); |
137 |
|
|
dev = NULL; |
138 |
|
|
} |
139 |
|
|
|
140 |
|
|
|
141 |
greg |
2.18 |
void |
142 |
greg |
1.1 |
printdevices() /* print list of output devices */ |
143 |
|
|
{ |
144 |
|
|
register int i; |
145 |
|
|
|
146 |
|
|
for (i = 0; devtable[i].name; i++) |
147 |
|
|
printf("%-16s # %s\n", devtable[i].name, devtable[i].descrip); |
148 |
|
|
} |
149 |
|
|
|
150 |
|
|
|
151 |
greg |
2.18 |
void |
152 |
greg |
1.1 |
rview() /* do a view */ |
153 |
|
|
{ |
154 |
|
|
char buf[32]; |
155 |
|
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|
156 |
greg |
2.18 |
devopen(dvcname); /* open device */ |
157 |
greg |
1.14 |
newimage(); /* start image (calls fillreserves) */ |
158 |
|
|
|
159 |
greg |
1.1 |
for ( ; ; ) { /* quit in command() */ |
160 |
greg |
1.14 |
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
161 |
greg |
1.1 |
command("done: "); |
162 |
greg |
1.14 |
while (reserve_mem == NULL) |
163 |
|
|
command("out of memory: "); |
164 |
|
|
errno = 0; |
165 |
|
|
if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) { |
166 |
greg |
1.1 |
sprintf(buf, "%d sampling...\n", 1<<pdepth); |
167 |
|
|
(*dev->comout)(buf); |
168 |
|
|
rsample(); |
169 |
|
|
} else { |
170 |
|
|
sprintf(buf, "%d refining...\n", 1<<pdepth); |
171 |
|
|
(*dev->comout)(buf); |
172 |
greg |
1.9 |
refine(&ptrunk, 0, 0, hresolu, vresolu, pdepth+1); |
173 |
greg |
1.1 |
} |
174 |
greg |
1.14 |
if (errno == ENOMEM) /* ran out of memory */ |
175 |
|
|
freereserves(); |
176 |
|
|
else if (dev->inpready) /* noticed some input */ |
177 |
greg |
1.1 |
command(": "); |
178 |
greg |
1.14 |
else /* finished this depth */ |
179 |
greg |
1.1 |
pdepth++; |
180 |
|
|
} |
181 |
|
|
} |
182 |
|
|
|
183 |
|
|
|
184 |
greg |
2.18 |
void |
185 |
greg |
1.14 |
fillreserves() /* fill memory reserves */ |
186 |
greg |
1.12 |
{ |
187 |
|
|
if (reserve_mem != NULL) |
188 |
greg |
1.14 |
return; |
189 |
greg |
2.18 |
reserve_mem = (char *)malloc(RESERVE_AMT); |
190 |
greg |
1.12 |
} |
191 |
|
|
|
192 |
|
|
|
193 |
greg |
2.18 |
void |
194 |
greg |
1.14 |
freereserves() /* free memory reserves */ |
195 |
greg |
1.12 |
{ |
196 |
greg |
1.14 |
if (reserve_mem == NULL) |
197 |
|
|
return; |
198 |
greg |
1.12 |
free(reserve_mem); |
199 |
|
|
reserve_mem = NULL; |
200 |
|
|
} |
201 |
|
|
|
202 |
|
|
|
203 |
greg |
2.18 |
void |
204 |
greg |
1.1 |
command(prompt) /* get/execute command */ |
205 |
|
|
char *prompt; |
206 |
|
|
{ |
207 |
greg |
2.8 |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
208 |
greg |
1.1 |
char inpbuf[256]; |
209 |
|
|
char *args; |
210 |
|
|
again: |
211 |
greg |
1.10 |
(*dev->comin)(inpbuf, prompt); /* get command + arguments */ |
212 |
greg |
1.1 |
for (args = inpbuf; *args && *args != ' '; args++) |
213 |
|
|
; |
214 |
|
|
if (*args) *args++ = '\0'; |
215 |
|
|
else *++args = '\0'; |
216 |
|
|
|
217 |
|
|
switch (inpbuf[0]) { |
218 |
greg |
2.10 |
case 'f': /* new frame (or free mem.) */ |
219 |
|
|
if (badcom("frame")) { |
220 |
|
|
if (badcom("free")) |
221 |
|
|
goto commerr; |
222 |
|
|
free_objmem(); |
223 |
|
|
break; |
224 |
|
|
} |
225 |
greg |
1.1 |
getframe(args); |
226 |
|
|
break; |
227 |
|
|
case 'v': /* view */ |
228 |
|
|
if (badcom("view")) |
229 |
|
|
goto commerr; |
230 |
|
|
getview(args); |
231 |
|
|
break; |
232 |
|
|
case 'l': /* last view */ |
233 |
|
|
if (badcom("last")) |
234 |
|
|
goto commerr; |
235 |
|
|
lastview(args); |
236 |
greg |
2.11 |
break; |
237 |
|
|
case 'V': /* save view */ |
238 |
|
|
if (badcom("V")) |
239 |
|
|
goto commerr; |
240 |
|
|
saveview(args); |
241 |
|
|
break; |
242 |
|
|
case 'L': /* load view */ |
243 |
|
|
if (badcom("L")) |
244 |
|
|
goto commerr; |
245 |
|
|
loadview(args); |
246 |
greg |
1.1 |
break; |
247 |
|
|
case 'e': /* exposure */ |
248 |
|
|
if (badcom("exposure")) |
249 |
|
|
goto commerr; |
250 |
|
|
getexposure(args); |
251 |
|
|
break; |
252 |
|
|
case 's': /* set a parameter */ |
253 |
greg |
2.13 |
if (badcom("set")) { |
254 |
|
|
#ifdef SIGTSTP |
255 |
|
|
if (!badcom("stop")) |
256 |
|
|
goto dostop; |
257 |
|
|
#endif |
258 |
greg |
1.1 |
goto commerr; |
259 |
greg |
2.13 |
} |
260 |
greg |
1.1 |
setparam(args); |
261 |
|
|
break; |
262 |
|
|
case 'n': /* new picture */ |
263 |
|
|
if (badcom("new")) |
264 |
|
|
goto commerr; |
265 |
|
|
newimage(); |
266 |
|
|
break; |
267 |
|
|
case 't': /* trace a ray */ |
268 |
|
|
if (badcom("trace")) |
269 |
|
|
goto commerr; |
270 |
|
|
traceray(args); |
271 |
|
|
break; |
272 |
|
|
case 'a': /* aim camera */ |
273 |
|
|
if (badcom("aim")) |
274 |
|
|
goto commerr; |
275 |
|
|
getaim(args); |
276 |
|
|
break; |
277 |
greg |
2.10 |
case 'm': /* move camera (or memstats) */ |
278 |
greg |
1.1 |
if (badcom("move")) |
279 |
greg |
2.8 |
#ifdef MSTATS |
280 |
greg |
2.2 |
{ |
281 |
|
|
if (badcom("memory")) |
282 |
|
|
goto commerr; |
283 |
|
|
printmemstats(stderr); |
284 |
|
|
break; |
285 |
|
|
} |
286 |
|
|
#else |
287 |
greg |
1.1 |
goto commerr; |
288 |
greg |
2.2 |
#endif |
289 |
greg |
1.1 |
getmove(args); |
290 |
|
|
break; |
291 |
greg |
1.8 |
case 'r': /* rotate/repaint */ |
292 |
|
|
if (badcom("rotate")) { |
293 |
greg |
2.13 |
if (badcom("repaint")) { |
294 |
|
|
if (badcom("redraw")) |
295 |
|
|
goto commerr; |
296 |
|
|
redraw(); |
297 |
|
|
break; |
298 |
|
|
} |
299 |
greg |
1.8 |
getrepaint(args); |
300 |
|
|
break; |
301 |
|
|
} |
302 |
greg |
1.1 |
getrotate(args); |
303 |
|
|
break; |
304 |
|
|
case 'p': /* pivot view */ |
305 |
greg |
2.13 |
if (badcom("pivot")) { |
306 |
|
|
if (badcom("pause")) |
307 |
|
|
goto commerr; |
308 |
|
|
goto again; |
309 |
|
|
} |
310 |
greg |
1.1 |
getpivot(args); |
311 |
|
|
break; |
312 |
greg |
2.4 |
case CTRL('R'): /* redraw */ |
313 |
greg |
1.1 |
redraw(); |
314 |
|
|
break; |
315 |
|
|
case 'w': /* write */ |
316 |
|
|
if (badcom("write")) |
317 |
|
|
goto commerr; |
318 |
|
|
writepict(args); |
319 |
|
|
break; |
320 |
|
|
case 'q': /* quit */ |
321 |
|
|
if (badcom("quit")) |
322 |
|
|
goto commerr; |
323 |
|
|
quit(0); |
324 |
greg |
2.4 |
case CTRL('C'): /* interrupt */ |
325 |
greg |
1.1 |
goto again; |
326 |
greg |
2.8 |
#ifdef SIGTSTP |
327 |
greg |
2.13 |
case CTRL('Z'):; /* stop */ |
328 |
|
|
dostop: |
329 |
greg |
1.1 |
devclose(); |
330 |
|
|
kill(0, SIGTSTP); |
331 |
|
|
/* pc stops here */ |
332 |
greg |
2.18 |
devopen(dvcname); |
333 |
greg |
1.1 |
redraw(); |
334 |
|
|
break; |
335 |
|
|
#endif |
336 |
|
|
case '\0': /* continue */ |
337 |
|
|
break; |
338 |
|
|
default:; |
339 |
|
|
commerr: |
340 |
|
|
if (iscntrl(inpbuf[0])) |
341 |
|
|
sprintf(errmsg, "^%c: unknown control", |
342 |
|
|
inpbuf[0]|0100); |
343 |
|
|
else |
344 |
|
|
sprintf(errmsg, "%s: unknown command", inpbuf); |
345 |
|
|
error(COMMAND, errmsg); |
346 |
|
|
break; |
347 |
|
|
} |
348 |
greg |
2.8 |
#undef badcom |
349 |
greg |
1.1 |
} |
350 |
|
|
|
351 |
|
|
|
352 |
greg |
2.18 |
void |
353 |
greg |
1.1 |
rsample() /* sample the image */ |
354 |
|
|
{ |
355 |
|
|
int xsiz, ysiz, y; |
356 |
|
|
RECT r; |
357 |
|
|
PNODE *p; |
358 |
|
|
register RECT *rl; |
359 |
greg |
2.8 |
register PNODE **pl; |
360 |
greg |
1.1 |
register int x; |
361 |
|
|
/* |
362 |
|
|
* We initialize the bottom row in the image at our current |
363 |
greg |
2.8 |
* resolution. During sampling, we check super-pixels to the |
364 |
greg |
1.1 |
* right and above by calling bigdiff(). If there is a significant |
365 |
|
|
* difference, we subsample the super-pixels. The testing process |
366 |
|
|
* includes initialization of the next row. |
367 |
|
|
*/ |
368 |
greg |
2.12 |
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
369 |
|
|
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
370 |
greg |
1.1 |
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
371 |
greg |
1.12 |
if (rl == NULL) |
372 |
greg |
1.14 |
return; |
373 |
greg |
1.1 |
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
374 |
greg |
2.7 |
if (pl == NULL) { |
375 |
greg |
2.18 |
free((void *)rl); |
376 |
greg |
1.14 |
return; |
377 |
greg |
2.7 |
} |
378 |
greg |
1.1 |
/* |
379 |
|
|
* Initialize the bottom row. |
380 |
|
|
*/ |
381 |
|
|
rl[0].l = rl[0].d = 0; |
382 |
greg |
1.9 |
rl[0].r = hresolu; rl[0].u = vresolu; |
383 |
greg |
1.1 |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
384 |
|
|
for (x = 1; x < xsiz; x++) { |
385 |
|
|
rl[x].l = rl[x].d = 0; |
386 |
greg |
1.9 |
rl[x].r = hresolu; rl[x].u = vresolu; |
387 |
|
|
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
388 |
greg |
1.1 |
pframe.d, &ptrunk, rl+x, pdepth); |
389 |
|
|
} |
390 |
|
|
/* sample the image */ |
391 |
|
|
for (y = 0; /* y < ysiz */ ; y++) { |
392 |
|
|
for (x = 0; x < xsiz-1; x++) { |
393 |
greg |
1.20 |
if (dev->inpready || errno == ENOMEM) |
394 |
greg |
1.1 |
goto escape; |
395 |
|
|
/* |
396 |
|
|
* Test super-pixel to the right. |
397 |
|
|
*/ |
398 |
|
|
if (pl[x] != pl[x+1] && bigdiff(pl[x]->v, |
399 |
|
|
pl[x+1]->v, maxdiff)) { |
400 |
|
|
refine(pl[x], rl[x].l, rl[x].d, |
401 |
|
|
rl[x].r, rl[x].u, 1); |
402 |
|
|
refine(pl[x+1], rl[x+1].l, rl[x+1].d, |
403 |
|
|
rl[x+1].r, rl[x+1].u, 1); |
404 |
|
|
} |
405 |
|
|
} |
406 |
|
|
if (y >= ysiz-1) |
407 |
|
|
break; |
408 |
|
|
for (x = 0; x < xsiz; x++) { |
409 |
greg |
1.20 |
if (dev->inpready || errno == ENOMEM) |
410 |
greg |
1.1 |
goto escape; |
411 |
|
|
/* |
412 |
|
|
* Find super-pixel at this position in next row. |
413 |
|
|
*/ |
414 |
|
|
r.l = r.d = 0; |
415 |
greg |
1.9 |
r.r = hresolu; r.u = vresolu; |
416 |
|
|
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
417 |
|
|
pframe.d+(((y+1)*vresolu)>>pdepth), |
418 |
greg |
1.1 |
&ptrunk, &r, pdepth); |
419 |
|
|
/* |
420 |
|
|
* Test super-pixel in next row. |
421 |
|
|
*/ |
422 |
|
|
if (pl[x] != p && bigdiff(pl[x]->v, p->v, maxdiff)) { |
423 |
|
|
refine(pl[x], rl[x].l, rl[x].d, |
424 |
|
|
rl[x].r, rl[x].u, 1); |
425 |
|
|
refine(p, r.l, r.d, r.r, r.u, 1); |
426 |
|
|
} |
427 |
|
|
/* |
428 |
|
|
* Copy into super-pixel array. |
429 |
|
|
*/ |
430 |
|
|
rl[x].l = r.l; rl[x].d = r.d; |
431 |
|
|
rl[x].r = r.r; rl[x].u = r.u; |
432 |
|
|
pl[x] = p; |
433 |
|
|
} |
434 |
|
|
} |
435 |
|
|
escape: |
436 |
greg |
2.18 |
free((void *)rl); |
437 |
|
|
free((void *)pl); |
438 |
greg |
1.1 |
} |
439 |
|
|
|
440 |
|
|
|
441 |
|
|
int |
442 |
|
|
refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
443 |
greg |
2.8 |
register PNODE *p; |
444 |
greg |
1.1 |
int xmin, ymin, xmax, ymax; |
445 |
|
|
int pd; |
446 |
|
|
{ |
447 |
|
|
int growth; |
448 |
|
|
int mx, my; |
449 |
|
|
int i; |
450 |
|
|
|
451 |
|
|
if (dev->inpready) /* quit for input */ |
452 |
|
|
return(0); |
453 |
|
|
|
454 |
|
|
if (pd <= 0) /* depth limit */ |
455 |
|
|
return(0); |
456 |
|
|
|
457 |
|
|
mx = (xmin + xmax) >> 1; |
458 |
|
|
my = (ymin + ymax) >> 1; |
459 |
|
|
growth = 0; |
460 |
|
|
|
461 |
|
|
if (p->kid == NULL) { /* subdivide */ |
462 |
|
|
|
463 |
|
|
if ((p->kid = newptree()) == NULL) |
464 |
greg |
1.20 |
return(0); |
465 |
greg |
1.1 |
/* |
466 |
|
|
* The following paint order can leave a black pixel |
467 |
greg |
2.7 |
* if redraw() is called in (*dev->paintr)(). |
468 |
greg |
1.1 |
*/ |
469 |
|
|
if (p->x >= mx && p->y >= my) |
470 |
|
|
pcopy(p, p->kid+UR); |
471 |
|
|
else |
472 |
|
|
paint(p->kid+UR, mx, my, xmax, ymax); |
473 |
|
|
if (p->x < mx && p->y >= my) |
474 |
|
|
pcopy(p, p->kid+UL); |
475 |
|
|
else |
476 |
|
|
paint(p->kid+UL, xmin, my, mx, ymax); |
477 |
|
|
if (p->x >= mx && p->y < my) |
478 |
|
|
pcopy(p, p->kid+DR); |
479 |
|
|
else |
480 |
|
|
paint(p->kid+DR, mx, ymin, xmax, my); |
481 |
|
|
if (p->x < mx && p->y < my) |
482 |
|
|
pcopy(p, p->kid+DL); |
483 |
|
|
else |
484 |
|
|
paint(p->kid+DL, xmin, ymin, mx, my); |
485 |
|
|
|
486 |
|
|
growth++; |
487 |
|
|
} |
488 |
|
|
/* do children */ |
489 |
|
|
if (mx > pframe.l) { |
490 |
|
|
if (my > pframe.d) |
491 |
|
|
growth += refine(p->kid+DL, xmin, ymin, mx, my, pd-1); |
492 |
|
|
if (my < pframe.u) |
493 |
|
|
growth += refine(p->kid+UL, xmin, my, mx, ymax, pd-1); |
494 |
|
|
} |
495 |
|
|
if (mx < pframe.r) { |
496 |
|
|
if (my > pframe.d) |
497 |
|
|
growth += refine(p->kid+DR, mx, ymin, xmax, my, pd-1); |
498 |
|
|
if (my < pframe.u) |
499 |
|
|
growth += refine(p->kid+UR, mx, my, xmax, ymax, pd-1); |
500 |
|
|
} |
501 |
|
|
/* recompute sum */ |
502 |
|
|
if (growth) { |
503 |
|
|
setcolor(p->v, 0.0, 0.0, 0.0); |
504 |
|
|
for (i = 0; i < 4; i++) |
505 |
|
|
addcolor(p->v, p->kid[i].v); |
506 |
|
|
scalecolor(p->v, 0.25); |
507 |
|
|
} |
508 |
|
|
return(growth); |
509 |
|
|
} |