1 |
gwlarson |
3.1 |
#ifndef lint |
2 |
schorsch |
3.9 |
static const char RCSid[] = "$Id: rglinst.c,v 3.8 2003/05/13 17:58:32 greg Exp $"; |
3 |
gwlarson |
3.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Routines for reading instances and converting to OpenGL. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
greg |
3.6 |
#include "copyright.h" |
9 |
greg |
3.5 |
|
10 |
gwlarson |
3.1 |
#include "radogl.h" |
11 |
|
|
#include "octree.h" |
12 |
schorsch |
3.9 |
#include "platform.h" |
13 |
gwlarson |
3.1 |
|
14 |
gwlarson |
3.2 |
#define MAXLEVEL 16 /* maximum instance hierarchy level */ |
15 |
|
|
|
16 |
gwlarson |
3.1 |
typedef struct { |
17 |
|
|
int listid; /* our list id */ |
18 |
|
|
short localmatl; /* uses local material only */ |
19 |
|
|
FVECT cent; /* center of octree cube */ |
20 |
|
|
char octfile[256]; /* octree file path */ |
21 |
|
|
} OCTINST; /* octree to instantiate */ |
22 |
|
|
|
23 |
|
|
static double ogetflt(); |
24 |
|
|
static long ogetint(); |
25 |
|
|
static char *ogetstr(); |
26 |
greg |
3.5 |
static int loadobj(); |
27 |
|
|
static void skiptree(); |
28 |
|
|
static void octerror(); |
29 |
gwlarson |
3.1 |
static OCTINST *getoct(); |
30 |
|
|
|
31 |
|
|
static char *infn; /* input file name */ |
32 |
|
|
static FILE *infp; /* input file stream */ |
33 |
|
|
static int objsize; /* size of stored OBJECT's */ |
34 |
|
|
static short otypmap[NUMOTYPE+8]; /* object type map */ |
35 |
|
|
|
36 |
gwlarson |
3.4 |
static unsigned long imhash(mod) char *mod; {return((unsigned long)mod);} |
37 |
gwlarson |
3.1 |
static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0}; |
38 |
|
|
|
39 |
|
|
static LUTAB ottab = LU_SINIT(free,free); |
40 |
|
|
|
41 |
|
|
|
42 |
greg |
3.5 |
int |
43 |
gwlarson |
3.1 |
o_instance(o) /* convert instance to list call */ |
44 |
|
|
register OBJREC *o; |
45 |
|
|
{ |
46 |
|
|
XF xfs; |
47 |
|
|
register OCTINST *ot; |
48 |
|
|
/* set up */ |
49 |
|
|
if (o->oargs.nsargs < 1) |
50 |
|
|
objerror(o, USER, "missing octree"); |
51 |
|
|
setmaterial(NULL, NULL, 0); |
52 |
|
|
/* put out transform (if any) */ |
53 |
|
|
if (o->oargs.nsargs > 1) { |
54 |
|
|
if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) != |
55 |
|
|
o->oargs.nsargs-1) |
56 |
|
|
objerror(o, USER, "bad transform"); |
57 |
|
|
glPushAttrib(GL_TRANSFORM_BIT); |
58 |
|
|
if (xfs.sca < 1.-FTINY | xfs.sca > 1.+FTINY) |
59 |
|
|
glEnable(GL_NORMALIZE); |
60 |
|
|
glMatrixMode(GL_MODELVIEW); |
61 |
|
|
glPushMatrix(); |
62 |
|
|
/* matrix order works out to same */ |
63 |
|
|
#ifdef SMLFLT |
64 |
|
|
glMultMatrixf((GLfloat *)xfs.xfm); |
65 |
|
|
#else |
66 |
|
|
glMultMatrixd((GLdouble *)xfs.xfm); |
67 |
|
|
#endif |
68 |
|
|
} |
69 |
|
|
ot = getoct(o->oargs.sarg[0]); /* get octree reference */ |
70 |
|
|
if (ot->localmatl &= o->os != NULL) /* set material */ |
71 |
greg |
3.5 |
setmaterial((MATREC *)o->os, ot->cent, 0); |
72 |
gwlarson |
3.1 |
/* call the assigned list */ |
73 |
|
|
glCallList(ot->listid); |
74 |
|
|
|
75 |
|
|
if (o->oargs.nsargs > 1) { /* end transform */ |
76 |
gwlarson |
3.3 |
glMatrixMode(GL_MODELVIEW); |
77 |
gwlarson |
3.1 |
glPopMatrix(); |
78 |
|
|
glPopAttrib(); |
79 |
|
|
} |
80 |
|
|
rgl_checkerr("creating instance"); |
81 |
greg |
3.7 |
return(0); |
82 |
gwlarson |
3.1 |
} |
83 |
|
|
|
84 |
|
|
|
85 |
|
|
static int |
86 |
|
|
buildoctlist(lp) /* build octree list */ |
87 |
|
|
LUENT *lp; |
88 |
|
|
{ |
89 |
|
|
int old_dolights = dolights, old_domats = domats; |
90 |
|
|
register OCTINST *op = (OCTINST *)lp->data; |
91 |
|
|
|
92 |
|
|
domats = !op->localmatl; /* do materials only if needed */ |
93 |
|
|
dolights = 0; /* never do light sources */ |
94 |
|
|
glNewList(op->listid, GL_COMPILE); |
95 |
|
|
loadoct(op->octfile); /* load objects into display list */ |
96 |
|
|
surfclean(); /* clean up */ |
97 |
|
|
glEndList(); |
98 |
|
|
dolights = old_dolights; /* restore */ |
99 |
|
|
domats = old_domats; |
100 |
|
|
return(1); /* return success */ |
101 |
|
|
} |
102 |
|
|
|
103 |
|
|
|
104 |
|
|
int |
105 |
|
|
loadoctrees() /* load octrees we've saved up */ |
106 |
|
|
{ |
107 |
gwlarson |
3.2 |
int levelsleft = MAXLEVEL; |
108 |
gwlarson |
3.1 |
int nocts = 0; |
109 |
|
|
LUTAB looptab; |
110 |
|
|
/* loop through new octree references */ |
111 |
|
|
while (ottab.tsiz) { |
112 |
gwlarson |
3.2 |
if (!levelsleft--) |
113 |
|
|
error(USER, "too many octree levels -- instance loop?"); |
114 |
gwlarson |
3.1 |
copystruct(&looptab, &ottab); |
115 |
|
|
ottab.tsiz = 0; |
116 |
|
|
nocts += lu_doall(&looptab, buildoctlist); |
117 |
|
|
lu_done(&looptab); |
118 |
|
|
} |
119 |
|
|
return(nocts); |
120 |
|
|
} |
121 |
|
|
|
122 |
|
|
|
123 |
|
|
static OCTINST * |
124 |
|
|
getoct(name) /* get/assign octree list id */ |
125 |
|
|
char *name; |
126 |
|
|
{ |
127 |
|
|
char *path; |
128 |
|
|
register LUENT *lp; |
129 |
|
|
register OCTINST *op; |
130 |
|
|
|
131 |
|
|
if ((lp = lu_find(&ottab, name)) == NULL) |
132 |
|
|
goto memerr; |
133 |
|
|
if (lp->key == NULL) { |
134 |
|
|
lp->key = (char *)malloc(strlen(name)+1); |
135 |
|
|
if (lp->key == NULL) |
136 |
|
|
goto memerr; |
137 |
|
|
strcpy(lp->key, name); |
138 |
|
|
} |
139 |
|
|
if ((op = (OCTINST *)lp->data) == NULL) { |
140 |
greg |
3.8 |
path = getpath(name, getrlibpath(), R_OK); |
141 |
gwlarson |
3.1 |
if (path == NULL) { |
142 |
|
|
sprintf(errmsg, "cannot find octree \"%s\"", name); |
143 |
|
|
error(USER, errmsg); |
144 |
|
|
} |
145 |
|
|
op = (OCTINST *)(lp->data = (char *)malloc(sizeof(OCTINST))); |
146 |
|
|
strcpy(op->octfile, path); |
147 |
|
|
checkoct(op->octfile, op->cent); |
148 |
|
|
op->listid = newglist(); |
149 |
|
|
op->localmatl = ~0; |
150 |
|
|
} |
151 |
|
|
return(op); |
152 |
|
|
memerr: |
153 |
|
|
error(SYSTEM, "out of memory in getoct"); |
154 |
|
|
} |
155 |
|
|
|
156 |
|
|
|
157 |
|
|
double |
158 |
|
|
checkoct(fname, cent) /* check octree file for validity */ |
159 |
|
|
char *fname; |
160 |
|
|
FVECT cent; |
161 |
|
|
{ |
162 |
|
|
char sbuf[64]; |
163 |
|
|
FILE *fp = infp; |
164 |
|
|
char *fn = infn; |
165 |
|
|
double siz = 0.; |
166 |
|
|
register int i; |
167 |
|
|
|
168 |
|
|
if ((infp = fopen(infn=fname, "r")) == NULL) { |
169 |
|
|
sprintf(errmsg, "cannot open octree file \"%s\"", fname); |
170 |
|
|
error(SYSTEM, errmsg); |
171 |
|
|
} |
172 |
schorsch |
3.9 |
SET_FILE_BINARY(infp); |
173 |
gwlarson |
3.1 |
/* get header */ |
174 |
|
|
if (checkheader(infp, OCTFMT, NULL) < 0) |
175 |
|
|
octerror(USER, "not an octree"); |
176 |
|
|
/* check format */ |
177 |
|
|
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 || |
178 |
|
|
objsize > MAXOBJSIZ || objsize > sizeof(long)) |
179 |
|
|
octerror("incompatible octree format"); |
180 |
|
|
if (cent != NULL) { /* get boundaries (compute center) */ |
181 |
|
|
for (i = 0; i < 3; i++) |
182 |
|
|
cent[i] = atof(ogetstr(sbuf)); |
183 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
184 |
|
|
cent[0] += siz; cent[1] += siz; cent[2] += siz; |
185 |
|
|
} else { /* get size (radius) only */ |
186 |
|
|
for (i = 0; i < 3; i++) |
187 |
|
|
ogetstr(sbuf); |
188 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
189 |
|
|
} |
190 |
|
|
fclose(infp); |
191 |
|
|
infp = fp; |
192 |
|
|
infn = fn; |
193 |
|
|
return(siz); |
194 |
|
|
} |
195 |
|
|
|
196 |
|
|
|
197 |
greg |
3.5 |
int |
198 |
gwlarson |
3.1 |
loadoct(fname) /* read in objects from octree */ |
199 |
|
|
char *fname; |
200 |
|
|
{ |
201 |
|
|
OBJECT fnobjects; |
202 |
|
|
char sbuf[256]; |
203 |
|
|
int nf; |
204 |
|
|
register int i; |
205 |
|
|
long m; |
206 |
|
|
|
207 |
|
|
infn = fname; |
208 |
|
|
infp = fopen(fname, "r"); /* assume already checked */ |
209 |
schorsch |
3.9 |
SET_FILE_BINARY(infp); |
210 |
gwlarson |
3.1 |
/* skip header */ |
211 |
|
|
getheader(infp, NULL, NULL); |
212 |
|
|
/* get format */ |
213 |
|
|
objsize = ogetint(2)-OCTMAGIC; |
214 |
|
|
/* skip boundaries */ |
215 |
|
|
for (i = 0; i < 4; i++) |
216 |
|
|
ogetstr(sbuf); |
217 |
|
|
nf = 0; /* load object files */ |
218 |
|
|
while (*ogetstr(sbuf)) { |
219 |
|
|
rgl_load(sbuf); |
220 |
|
|
nf++; |
221 |
|
|
} |
222 |
|
|
/* get number of objects */ |
223 |
|
|
fnobjects = m = ogetint(objsize); |
224 |
|
|
if (fnobjects != m) |
225 |
|
|
octerror(USER, "too many objects"); |
226 |
|
|
|
227 |
|
|
if (nf == 0) { |
228 |
|
|
skiptree(); |
229 |
|
|
for (i = 0; *ogetstr(sbuf); i++) |
230 |
|
|
if ((otypmap[i] = otype(sbuf)) < 0) { |
231 |
|
|
sprintf(errmsg, "unknown type \"%s\"", sbuf); |
232 |
|
|
octerror(WARNING, errmsg); |
233 |
|
|
} |
234 |
|
|
lu_init(&imtab, 1000); nobjects = 0; |
235 |
|
|
while (loadobj() != OVOID) |
236 |
|
|
; |
237 |
|
|
lu_done(&imtab); |
238 |
|
|
if (nobjects != fnobjects) |
239 |
|
|
octerror(USER, "inconsistent object count"); |
240 |
|
|
} |
241 |
|
|
fclose(infp); |
242 |
|
|
return(nf); |
243 |
|
|
} |
244 |
|
|
|
245 |
|
|
|
246 |
|
|
static char * |
247 |
|
|
ogetstr(s) /* get null-terminated string */ |
248 |
|
|
char *s; |
249 |
|
|
{ |
250 |
|
|
extern char *getstr(); |
251 |
|
|
|
252 |
|
|
if (getstr(s, infp) == NULL) |
253 |
|
|
octerror(USER, "truncated octree"); |
254 |
|
|
return(s); |
255 |
|
|
} |
256 |
|
|
|
257 |
|
|
|
258 |
|
|
static long |
259 |
|
|
ogetint(siz) /* get a siz-byte integer */ |
260 |
|
|
int siz; |
261 |
|
|
{ |
262 |
|
|
extern long getint(); |
263 |
|
|
register long r; |
264 |
|
|
|
265 |
|
|
r = getint(siz, infp); |
266 |
|
|
if (feof(infp)) |
267 |
|
|
octerror(USER, "truncated octree"); |
268 |
|
|
return(r); |
269 |
|
|
} |
270 |
|
|
|
271 |
|
|
|
272 |
|
|
static double |
273 |
|
|
ogetflt() /* get a floating point number */ |
274 |
|
|
{ |
275 |
|
|
extern double getflt(); |
276 |
|
|
double r; |
277 |
|
|
|
278 |
|
|
r = getflt(infp); |
279 |
|
|
if (feof(infp)) |
280 |
|
|
octerror(USER, "truncated octree"); |
281 |
|
|
return(r); |
282 |
|
|
} |
283 |
|
|
|
284 |
|
|
|
285 |
greg |
3.5 |
static void |
286 |
gwlarson |
3.1 |
skiptree() /* skip octree on input */ |
287 |
|
|
{ |
288 |
|
|
register int i; |
289 |
|
|
|
290 |
|
|
switch (getc(infp)) { |
291 |
|
|
case OT_EMPTY: |
292 |
|
|
return; |
293 |
|
|
case OT_FULL: |
294 |
|
|
for (i = ogetint(objsize)*objsize; i-- > 0; ) |
295 |
|
|
if (getc(infp) == EOF) |
296 |
|
|
octerror(USER, "truncated octree"); |
297 |
|
|
return; |
298 |
|
|
case OT_TREE: |
299 |
|
|
for (i = 0; i < 8; i++) |
300 |
|
|
skiptree(); |
301 |
|
|
return; |
302 |
|
|
case EOF: |
303 |
|
|
octerror(USER, "truncated octree"); |
304 |
|
|
default: |
305 |
|
|
octerror(USER, "damaged octree"); |
306 |
|
|
} |
307 |
|
|
} |
308 |
|
|
|
309 |
|
|
|
310 |
greg |
3.5 |
static int |
311 |
gwlarson |
3.1 |
loadobj() /* get next object */ |
312 |
|
|
{ |
313 |
|
|
static OBJREC ob; |
314 |
|
|
char idbuf[MAXSTR], sbuf[MAXSTR]; |
315 |
|
|
register LUENT *lep; |
316 |
|
|
register int i; |
317 |
|
|
register long m; |
318 |
|
|
/* get type */ |
319 |
|
|
i = ogetint(1); |
320 |
|
|
if (i == -1) |
321 |
|
|
return(OVOID); /* terminator */ |
322 |
|
|
if ((ob.otype = otypmap[i]) < 0) |
323 |
|
|
octerror(USER, "reference to unknown type"); |
324 |
|
|
/* get modifier */ |
325 |
|
|
if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m) |
326 |
|
|
octerror(USER, "too many objects"); |
327 |
|
|
if ((ob.omod = m) != OVOID && domats) { |
328 |
|
|
if ((lep = lu_find(&imtab, (char *)m)) == NULL) |
329 |
|
|
goto memerr; |
330 |
|
|
ob.os = lep->data; |
331 |
|
|
} else |
332 |
|
|
ob.os = NULL; |
333 |
|
|
/* get name id */ |
334 |
|
|
ob.oname = ogetstr(idbuf); |
335 |
|
|
/* get string arguments */ |
336 |
|
|
if (ob.oargs.nsargs = ogetint(2)) { |
337 |
|
|
ob.oargs.sarg = (char **)malloc |
338 |
|
|
(ob.oargs.nsargs*sizeof(char *)); |
339 |
|
|
if (ob.oargs.sarg == NULL) |
340 |
|
|
goto memerr; |
341 |
|
|
for (i = 0; i < ob.oargs.nsargs; i++) |
342 |
|
|
ob.oargs.sarg[i] = savestr(ogetstr(sbuf)); |
343 |
|
|
} else |
344 |
|
|
ob.oargs.sarg = NULL; |
345 |
|
|
/* get integer arguments */ |
346 |
|
|
#ifdef IARGS |
347 |
|
|
if (ob.oargs.niargs = ogetint(2)) { |
348 |
|
|
ob.oargs.iarg = (long *)malloc |
349 |
|
|
(ob.oargs.niargs*sizeof(long)); |
350 |
|
|
if (ob.oargs.iarg == NULL) |
351 |
|
|
goto memerr; |
352 |
|
|
for (i = 0; i < ob.oargs.niargs; i++) |
353 |
|
|
ob.oargs.iarg[i] = ogetint(4); |
354 |
|
|
} else |
355 |
|
|
ob.oargs.iarg = NULL; |
356 |
|
|
#endif |
357 |
|
|
/* get real arguments */ |
358 |
|
|
if (ob.oargs.nfargs = ogetint(2)) { |
359 |
|
|
ob.oargs.farg = (FLOAT *)malloc |
360 |
|
|
(ob.oargs.nfargs*sizeof(FLOAT)); |
361 |
|
|
if (ob.oargs.farg == NULL) |
362 |
|
|
goto memerr; |
363 |
|
|
for (i = 0; i < ob.oargs.nfargs; i++) |
364 |
|
|
ob.oargs.farg[i] = ogetflt(); |
365 |
|
|
} else |
366 |
|
|
ob.oargs.farg = NULL; |
367 |
|
|
/* process object */ |
368 |
|
|
(*ofun[ob.otype].funp)(&ob); |
369 |
|
|
/* record material if modifier */ |
370 |
|
|
if (ismodifier(ob.otype)) { |
371 |
|
|
if ((lep = lu_find(&imtab, (char *)nobjects)) == NULL) |
372 |
|
|
goto memerr; |
373 |
|
|
lep->key = (char *)nobjects; |
374 |
|
|
lep->data = (char *)getmatp(ob.oname); |
375 |
|
|
} |
376 |
|
|
freefargs(&ob.oargs); /* free arguments */ |
377 |
|
|
return(nobjects++); /* return object id */ |
378 |
|
|
memerr: |
379 |
|
|
error(SYSTEM, "out of memory in loadobj"); |
380 |
|
|
} |
381 |
|
|
|
382 |
|
|
|
383 |
greg |
3.5 |
static void |
384 |
gwlarson |
3.1 |
octerror(etyp, msg) /* octree error */ |
385 |
|
|
int etyp; |
386 |
|
|
char *msg; |
387 |
|
|
{ |
388 |
|
|
char msgbuf[128]; |
389 |
|
|
|
390 |
|
|
sprintf(msgbuf, "(%s): %s", infn, msg); |
391 |
|
|
error(etyp, msgbuf); |
392 |
|
|
} |