1 |
– |
/* Copyright (c) 1987 Regents of the University of California */ |
2 |
– |
|
1 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
– |
|
4 |
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/* |
5 |
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* rview.c - routines and variables for interactive view generation. |
6 |
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* |
7 |
< |
* 3/24/87 |
7 |
> |
* External symbols declared in rpaint.h |
8 |
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*/ |
9 |
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|
10 |
< |
#include "standard.h" |
10 |
> |
#include "copyright.h" |
11 |
|
|
15 |
– |
#include "color.h" |
16 |
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|
17 |
– |
#include "rpaint.h" |
18 |
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|
12 |
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#include <signal.h> |
20 |
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|
13 |
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#include <ctype.h> |
14 |
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|
15 |
< |
VIEW ourview = STDVIEW(470); /* viewing parameters */ |
15 |
> |
#include "ray.h" |
16 |
> |
#include "rpaint.h" |
17 |
|
|
18 |
< |
int psample = 8; /* pixel sample size */ |
26 |
< |
double maxdiff = .15; /* max. sample difference */ |
18 |
> |
#define CTRL(c) ((c)-'@') |
19 |
|
|
28 |
– |
double exposure = 1.0; /* exposure for scene */ |
20 |
|
|
21 |
< |
double dstrsrc = 0.0; /* square source distribution */ |
22 |
< |
double shadthresh = .1; /* shadow threshold */ |
23 |
< |
double shadcert = .25; /* shadow certainty */ |
24 |
< |
|
34 |
< |
int maxdepth = 4; /* maximum recursion depth */ |
35 |
< |
double minweight = 1e-2; /* minimum ray weight */ |
36 |
< |
|
37 |
< |
COLOR ambval = BLKCOLOR; /* ambient value */ |
38 |
< |
double ambacc = 0.2; /* ambient accuracy */ |
39 |
< |
int ambres = 8; /* ambient resolution */ |
40 |
< |
int ambdiv = 32; /* ambient divisions */ |
41 |
< |
int ambssamp = 0; /* ambient super-samples */ |
42 |
< |
int ambounce = 0; /* ambient bounces */ |
43 |
< |
char *amblist[128]; /* ambient include/exclude list */ |
44 |
< |
int ambincl = -1; /* include == 1, exclude == 0 */ |
45 |
< |
|
46 |
< |
int greyscale = 0; /* map colors to brightness? */ |
47 |
< |
char *devname = "X"; /* output device name */ |
48 |
< |
|
49 |
< |
struct driver *dev = NULL; /* driver functions */ |
50 |
< |
|
51 |
< |
VIEW oldview; /* previous view parameters */ |
52 |
< |
|
53 |
< |
PNODE ptrunk; /* the base of our image */ |
54 |
< |
RECT pframe; /* current frame boundaries */ |
55 |
< |
int pdepth; /* image depth in current frame */ |
56 |
< |
|
57 |
< |
#define CTRL(c) ('c'-'@') |
58 |
< |
|
59 |
< |
|
60 |
< |
quit(code) /* quit program */ |
61 |
< |
int code; |
21 |
> |
void |
22 |
> |
devopen( /* open device driver */ |
23 |
> |
char *dname |
24 |
> |
) |
25 |
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{ |
26 |
< |
devclose(); |
27 |
< |
exit(code); |
28 |
< |
} |
26 |
> |
extern char *progname, *octname; |
27 |
> |
char *id; |
28 |
> |
int i; |
29 |
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|
30 |
< |
|
68 |
< |
devopen(dname) /* open device driver */ |
69 |
< |
char *dname; |
70 |
< |
{ |
71 |
< |
extern char *progname; |
72 |
< |
char *devargv[3]; |
73 |
< |
register int i; |
30 |
> |
id = octname!=NULL ? octname : progname; |
31 |
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/* check device table */ |
32 |
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for (i = 0; devtable[i].name; i++) |
33 |
< |
if (!strcmp(dname, devtable[i].name)) |
34 |
< |
if ((dev = (*devtable[i].init)(progname)) == NULL) { |
33 |
> |
if (!strcmp(dname, devtable[i].name)) { |
34 |
> |
if ((dev = (*devtable[i].init)(dname, id)) == NULL) { |
35 |
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sprintf(errmsg, "cannot initialize %s", dname); |
36 |
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error(USER, errmsg); |
37 |
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} else |
38 |
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return; |
39 |
+ |
} |
40 |
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/* not there, try exec */ |
41 |
< |
devargv[0] = dname; |
84 |
< |
devargv[1] = progname; |
85 |
< |
devargv[2] = NULL; |
86 |
< |
if ((dev = comm_init(devargv)) == NULL) { |
41 |
> |
if ((dev = comm_init(dname, id)) == NULL) { |
42 |
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sprintf(errmsg, "cannot start device \"%s\"", dname); |
43 |
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error(USER, errmsg); |
44 |
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} |
45 |
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} |
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|
47 |
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|
48 |
< |
devclose() /* close our device */ |
48 |
> |
void |
49 |
> |
devclose(void) /* close our device */ |
50 |
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{ |
51 |
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if (dev != NULL) |
52 |
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(*dev->close)(); |
54 |
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} |
55 |
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|
56 |
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|
57 |
< |
printdevices() /* print list of output devices */ |
57 |
> |
void |
58 |
> |
printdevices(void) /* print list of output devices */ |
59 |
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{ |
60 |
< |
register int i; |
60 |
> |
int i; |
61 |
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|
62 |
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for (i = 0; devtable[i].name; i++) |
63 |
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printf("%-16s # %s\n", devtable[i].name, devtable[i].descrip); |
64 |
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} |
65 |
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|
66 |
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|
67 |
< |
rview() /* do a view */ |
67 |
> |
void |
68 |
> |
rview(void) /* do a view */ |
69 |
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{ |
70 |
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char buf[32]; |
71 |
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|
72 |
< |
devopen(devname); /* open device */ |
73 |
< |
newimage(); /* set up image */ |
72 |
> |
devopen(dvcname); /* open device */ |
73 |
> |
newimage(NULL); /* start image */ |
74 |
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|
75 |
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for ( ; ; ) { /* quit in command() */ |
76 |
< |
while (ourview.hresolu <= 1<<pdepth && |
119 |
< |
ourview.vresolu <= 1<<pdepth) |
76 |
> |
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
77 |
|
command("done: "); |
78 |
< |
|
79 |
< |
if (ourview.hresolu <= psample<<pdepth && |
123 |
< |
ourview.vresolu <= psample<<pdepth) { |
78 |
> |
errno = 0; |
79 |
> |
if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) { |
80 |
|
sprintf(buf, "%d sampling...\n", 1<<pdepth); |
81 |
|
(*dev->comout)(buf); |
82 |
|
rsample(); |
83 |
|
} else { |
84 |
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sprintf(buf, "%d refining...\n", 1<<pdepth); |
85 |
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(*dev->comout)(buf); |
86 |
< |
refine(&ptrunk, 0, 0, ourview.hresolu, |
131 |
< |
ourview.vresolu, pdepth+1); |
86 |
> |
refine(&ptrunk, pdepth+1); |
87 |
|
} |
88 |
< |
if (dev->inpready) |
88 |
> |
if (waitrays() < 0) |
89 |
> |
quit(1); |
90 |
> |
if (dev->inpready) /* noticed some input */ |
91 |
|
command(": "); |
92 |
< |
else |
92 |
> |
else /* finished this depth */ |
93 |
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pdepth++; |
94 |
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} |
95 |
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} |
96 |
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|
97 |
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|
98 |
< |
command(prompt) /* get/execute command */ |
99 |
< |
char *prompt; |
98 |
> |
void |
99 |
> |
command( /* get/execute command */ |
100 |
> |
char *prompt |
101 |
> |
) |
102 |
|
{ |
103 |
< |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
145 |
< |
double atof(); |
103 |
> |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
104 |
|
char inpbuf[256]; |
105 |
|
char *args; |
106 |
|
again: |
107 |
< |
(*dev->comout)(prompt); /* get command + arguments */ |
150 |
< |
(*dev->comin)(inpbuf); |
107 |
> |
(*dev->comin)(inpbuf, prompt); /* get command + arguments */ |
108 |
|
for (args = inpbuf; *args && *args != ' '; args++) |
109 |
|
; |
110 |
|
if (*args) *args++ = '\0'; |
111 |
|
else *++args = '\0'; |
112 |
|
|
113 |
|
switch (inpbuf[0]) { |
114 |
< |
case 'f': /* new frame */ |
115 |
< |
if (badcom("frame")) |
116 |
< |
goto commerr; |
114 |
> |
case 'f': /* new frame (|focus|free) */ |
115 |
> |
if (badcom("frame")) { |
116 |
> |
if (badcom("focus")) { |
117 |
> |
if (badcom("free")) |
118 |
> |
goto commerr; |
119 |
> |
free_objmem(); |
120 |
> |
break; |
121 |
> |
} |
122 |
> |
getfocus(args); |
123 |
> |
break; |
124 |
> |
} |
125 |
|
getframe(args); |
126 |
|
break; |
127 |
|
case 'v': /* view */ |
134 |
|
goto commerr; |
135 |
|
lastview(args); |
136 |
|
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 |
+ |
break; |
147 |
|
case 'e': /* exposure */ |
148 |
|
if (badcom("exposure")) |
149 |
|
goto commerr; |
150 |
|
getexposure(args); |
151 |
|
break; |
152 |
|
case 's': /* set a parameter */ |
153 |
< |
if (badcom("set")) |
153 |
> |
if (badcom("set")) { |
154 |
> |
#ifdef SIGTSTP |
155 |
> |
if (!badcom("stop")) |
156 |
> |
goto dostop; |
157 |
> |
#endif |
158 |
|
goto commerr; |
159 |
+ |
} |
160 |
|
setparam(args); |
161 |
|
break; |
162 |
|
case 'n': /* new picture */ |
163 |
|
if (badcom("new")) |
164 |
|
goto commerr; |
165 |
< |
newimage(); |
165 |
> |
newimage(args); |
166 |
|
break; |
167 |
|
case 't': /* trace a ray */ |
168 |
|
if (badcom("trace")) |
174 |
|
goto commerr; |
175 |
|
getaim(args); |
176 |
|
break; |
177 |
< |
case 'm': /* move camera */ |
177 |
> |
case 'm': /* move camera (or memstats) */ |
178 |
|
if (badcom("move")) |
179 |
+ |
#ifdef MSTATS |
180 |
+ |
{ |
181 |
+ |
if (badcom("memory")) |
182 |
+ |
goto commerr; |
183 |
+ |
printmemstats(stderr); |
184 |
+ |
break; |
185 |
+ |
} |
186 |
+ |
#else |
187 |
|
goto commerr; |
188 |
+ |
#endif |
189 |
|
getmove(args); |
190 |
|
break; |
191 |
< |
case 'r': /* rotate camera */ |
192 |
< |
if (badcom("rotate")) |
193 |
< |
goto commerr; |
191 |
> |
case 'r': /* rotate/repaint */ |
192 |
> |
if (badcom("rotate")) { |
193 |
> |
if (badcom("repaint")) { |
194 |
> |
if (badcom("redraw")) |
195 |
> |
goto commerr; |
196 |
> |
redraw(); |
197 |
> |
break; |
198 |
> |
} |
199 |
> |
getrepaint(args); |
200 |
> |
break; |
201 |
> |
} |
202 |
|
getrotate(args); |
203 |
|
break; |
204 |
|
case 'p': /* pivot view */ |
205 |
< |
if (badcom("pivot")) |
206 |
< |
goto commerr; |
205 |
> |
if (badcom("pivot")) { |
206 |
> |
if (badcom("pause")) |
207 |
> |
goto commerr; |
208 |
> |
goto again; |
209 |
> |
} |
210 |
|
getpivot(args); |
211 |
|
break; |
212 |
< |
case CTRL(R): /* redraw */ |
212 |
> |
case CTRL('R'): /* redraw */ |
213 |
|
redraw(); |
214 |
|
break; |
215 |
|
case 'w': /* write */ |
221 |
|
if (badcom("quit")) |
222 |
|
goto commerr; |
223 |
|
quit(0); |
224 |
< |
case CTRL(C): /* interrupt */ |
224 |
> |
case CTRL('C'): /* interrupt */ |
225 |
|
goto again; |
226 |
< |
#ifdef SIGTSTP |
227 |
< |
case CTRL(Z): /* stop */ |
226 |
> |
#ifdef SIGTSTP |
227 |
> |
case CTRL('Z'):; /* stop */ |
228 |
> |
dostop: |
229 |
|
devclose(); |
230 |
|
kill(0, SIGTSTP); |
231 |
|
/* pc stops here */ |
232 |
< |
devopen(devname); |
232 |
> |
devopen(dvcname); |
233 |
|
redraw(); |
234 |
|
break; |
235 |
|
#endif |
245 |
|
error(COMMAND, errmsg); |
246 |
|
break; |
247 |
|
} |
248 |
< |
#undef badcom |
248 |
> |
#undef badcom |
249 |
|
} |
250 |
|
|
251 |
|
|
252 |
< |
rsample() /* sample the image */ |
252 |
> |
void |
253 |
> |
rsample(void) /* sample the image */ |
254 |
|
{ |
255 |
|
int xsiz, ysiz, y; |
254 |
– |
RECT r; |
256 |
|
PNODE *p; |
257 |
< |
register RECT *rl; |
258 |
< |
register PNODE **pl; |
258 |
< |
register int x; |
257 |
> |
PNODE **pl; |
258 |
> |
int x; |
259 |
|
/* |
260 |
|
* We initialize the bottom row in the image at our current |
261 |
< |
* resolution. During sampling, we check super-pixels to the |
261 |
> |
* resolution. During sampling, we check super-pixels to the |
262 |
|
* 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 |
< |
xsiz = (((pframe.r-pframe.l)<<pdepth)+ourview.hresolu-1) / |
267 |
< |
ourview.hresolu; |
268 |
< |
ysiz = (((pframe.u-pframe.d)<<pdepth)+ourview.vresolu-1) / |
269 |
< |
ourview.vresolu; |
270 |
< |
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
266 |
> |
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
267 |
> |
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
268 |
|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
269 |
< |
if (rl == NULL || pl == NULL) |
270 |
< |
error(SYSTEM, "out of memory in rsample"); |
269 |
> |
if (pl == NULL) |
270 |
> |
return; |
271 |
|
/* |
272 |
|
* Initialize the bottom row. |
273 |
|
*/ |
274 |
< |
rl[0].l = rl[0].d = 0; |
278 |
< |
rl[0].r = ourview.hresolu; rl[0].u = ourview.vresolu; |
279 |
< |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
274 |
> |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, pdepth); |
275 |
|
for (x = 1; x < xsiz; x++) { |
276 |
< |
rl[x].l = rl[x].d = 0; |
277 |
< |
rl[x].r = ourview.hresolu; rl[x].u = ourview.vresolu; |
283 |
< |
pl[x] = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
284 |
< |
pframe.d, &ptrunk, rl+x, pdepth); |
276 |
> |
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
277 |
> |
pframe.d, &ptrunk, pdepth); |
278 |
|
} |
279 |
|
/* sample the image */ |
280 |
|
for (y = 0; /* y < ysiz */ ; y++) { |
281 |
|
for (x = 0; x < xsiz-1; x++) { |
282 |
< |
if (dev->inpready) |
282 |
> |
if (dev->inpready || errno == ENOMEM) |
283 |
|
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 |
< |
refine(pl[x], rl[x].l, rl[x].d, |
290 |
< |
rl[x].r, rl[x].u, 1); |
298 |
< |
refine(pl[x+1], rl[x+1].l, rl[x+1].d, |
299 |
< |
rl[x+1].r, rl[x+1].u, 1); |
289 |
> |
refine(pl[x], 1); |
290 |
> |
refine(pl[x+1], 1); |
291 |
|
} |
292 |
|
} |
293 |
|
if (y >= ysiz-1) |
294 |
|
break; |
295 |
|
for (x = 0; x < xsiz; x++) { |
296 |
< |
if (dev->inpready) |
296 |
> |
if (dev->inpready || errno == ENOMEM) |
297 |
|
goto escape; |
298 |
|
/* |
299 |
|
* Find super-pixel at this position in next row. |
300 |
|
*/ |
301 |
< |
r.l = r.d = 0; |
302 |
< |
r.r = ourview.hresolu; r.u = ourview.vresolu; |
303 |
< |
p = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
313 |
< |
pframe.d+(((y+1)*ourview.vresolu)>>pdepth), |
314 |
< |
&ptrunk, &r, pdepth); |
301 |
> |
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
302 |
> |
pframe.d+(((y+1)*vresolu)>>pdepth), |
303 |
> |
&ptrunk, pdepth); |
304 |
|
/* |
305 |
|
* Test super-pixel in next row. |
306 |
|
*/ |
307 |
|
if (pl[x] != p && bigdiff(pl[x]->v, p->v, maxdiff)) { |
308 |
< |
refine(pl[x], rl[x].l, rl[x].d, |
309 |
< |
rl[x].r, rl[x].u, 1); |
321 |
< |
refine(p, r.l, r.d, r.r, r.u, 1); |
308 |
> |
refine(pl[x], 1); |
309 |
> |
refine(p, 1); |
310 |
|
} |
311 |
|
/* |
312 |
|
* Copy into super-pixel array. |
313 |
|
*/ |
326 |
– |
rl[x].l = r.l; rl[x].d = r.d; |
327 |
– |
rl[x].r = r.r; rl[x].u = r.u; |
314 |
|
pl[x] = p; |
315 |
|
} |
316 |
|
} |
317 |
|
escape: |
318 |
< |
free((char *)rl); |
333 |
< |
free((char *)pl); |
318 |
> |
free((void *)pl); |
319 |
|
} |
320 |
|
|
321 |
|
|
322 |
|
int |
323 |
< |
refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
324 |
< |
register PNODE *p; |
325 |
< |
int xmin, ymin, xmax, ymax; |
326 |
< |
int pd; |
323 |
> |
refine( /* refine a node */ |
324 |
> |
PNODE *p, |
325 |
> |
int pd |
326 |
> |
) |
327 |
|
{ |
328 |
|
int growth; |
329 |
|
int mx, my; |
335 |
|
if (pd <= 0) /* depth limit */ |
336 |
|
return(0); |
337 |
|
|
338 |
< |
mx = (xmin + xmax) >> 1; |
339 |
< |
my = (ymin + ymax) >> 1; |
338 |
> |
mx = (p->xmin + p->xmax) >> 1; |
339 |
> |
my = (p->ymin + p->ymax) >> 1; |
340 |
|
growth = 0; |
341 |
|
|
342 |
|
if (p->kid == NULL) { /* subdivide */ |
343 |
|
|
344 |
|
if ((p->kid = newptree()) == NULL) |
345 |
< |
error(SYSTEM, "out of memory in refine"); |
345 |
> |
return(0); |
346 |
> |
|
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 |
|
/* |
364 |
|
* The following paint order can leave a black pixel |
365 |
< |
* when redraw() is called in (*dev->paintr)(). |
365 |
> |
* if redraw() is called in (*dev->paintr)(). |
366 |
|
*/ |
367 |
|
if (p->x >= mx && p->y >= my) |
368 |
|
pcopy(p, p->kid+UR); |
369 |
< |
else |
370 |
< |
paint(p->kid+UR, mx, my, xmax, ymax); |
369 |
> |
else if (paint(p->kid+UR) < 0) |
370 |
> |
quit(1); |
371 |
|
if (p->x < mx && p->y >= my) |
372 |
|
pcopy(p, p->kid+UL); |
373 |
< |
else |
374 |
< |
paint(p->kid+UL, xmin, my, mx, ymax); |
373 |
> |
else if (paint(p->kid+UL) < 0) |
374 |
> |
quit(1); |
375 |
|
if (p->x >= mx && p->y < my) |
376 |
|
pcopy(p, p->kid+DR); |
377 |
< |
else |
378 |
< |
paint(p->kid+DR, mx, ymin, xmax, my); |
377 |
> |
else if (paint(p->kid+DR) < 0) |
378 |
> |
quit(1); |
379 |
|
if (p->x < mx && p->y < my) |
380 |
|
pcopy(p, p->kid+DL); |
381 |
< |
else |
382 |
< |
paint(p->kid+DL, xmin, ymin, mx, my); |
381 |
> |
else if (paint(p->kid+DL) < 0) |
382 |
> |
quit(1); |
383 |
|
|
384 |
|
growth++; |
385 |
|
} |
386 |
|
/* do children */ |
387 |
|
if (mx > pframe.l) { |
388 |
|
if (my > pframe.d) |
389 |
< |
growth += refine(p->kid+DL, xmin, ymin, mx, my, pd-1); |
389 |
> |
growth += refine(p->kid+DL, pd-1); |
390 |
|
if (my < pframe.u) |
391 |
< |
growth += refine(p->kid+UL, xmin, my, mx, ymax, pd-1); |
391 |
> |
growth += refine(p->kid+UL, pd-1); |
392 |
|
} |
393 |
|
if (mx < pframe.r) { |
394 |
|
if (my > pframe.d) |
395 |
< |
growth += refine(p->kid+DR, mx, ymin, xmax, my, pd-1); |
395 |
> |
growth += refine(p->kid+DR, pd-1); |
396 |
|
if (my < pframe.u) |
397 |
< |
growth += refine(p->kid+UR, mx, my, xmax, ymax, pd-1); |
397 |
> |
growth += refine(p->kid+UR, pd-1); |
398 |
|
} |
399 |
|
/* recompute sum */ |
400 |
|
if (growth) { |