1 |
gwlarson |
3.1 |
#ifndef lint |
2 |
greg |
3.5 |
static const char RCSid[] = "$Id$"; |
3 |
gwlarson |
3.1 |
#endif |
4 |
|
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/* |
5 |
|
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* Routines for reading instances and converting to OpenGL. |
6 |
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*/ |
7 |
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|
8 |
greg |
3.5 |
/* ==================================================================== |
9 |
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* The Radiance Software License, Version 1.0 |
10 |
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* |
11 |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
12 |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
13 |
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* |
14 |
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* Redistribution and use in source and binary forms, with or without |
15 |
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* modification, are permitted provided that the following conditions |
16 |
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* are met: |
17 |
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* |
18 |
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* 1. Redistributions of source code must retain the above copyright |
19 |
|
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* notice, this list of conditions and the following disclaimer. |
20 |
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* |
21 |
|
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* 2. Redistributions in binary form must reproduce the above copyright |
22 |
|
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* notice, this list of conditions and the following disclaimer in |
23 |
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* the documentation and/or other materials provided with the |
24 |
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* distribution. |
25 |
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* |
26 |
|
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* 3. The end-user documentation included with the redistribution, |
27 |
|
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* if any, must include the following acknowledgment: |
28 |
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* "This product includes Radiance software |
29 |
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* (http://radsite.lbl.gov/) |
30 |
|
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* developed by the Lawrence Berkeley National Laboratory |
31 |
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* (http://www.lbl.gov/)." |
32 |
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* Alternately, this acknowledgment may appear in the software itself, |
33 |
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* if and wherever such third-party acknowledgments normally appear. |
34 |
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* |
35 |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
36 |
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* and "The Regents of the University of California" must |
37 |
|
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* not be used to endorse or promote products derived from this |
38 |
|
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* software without prior written permission. For written |
39 |
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* permission, please contact [email protected]. |
40 |
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* |
41 |
|
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* 5. Products derived from this software may not be called "Radiance", |
42 |
|
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* nor may "Radiance" appear in their name, without prior written |
43 |
|
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* permission of Lawrence Berkeley National Laboratory. |
44 |
|
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* |
45 |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
46 |
|
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
47 |
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
48 |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
49 |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
50 |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
51 |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
52 |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
53 |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
54 |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
55 |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
56 |
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* SUCH DAMAGE. |
57 |
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* ==================================================================== |
58 |
|
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* |
59 |
|
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* This software consists of voluntary contributions made by many |
60 |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
61 |
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* information on Lawrence Berkeley National Laboratory, please see |
62 |
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* <http://www.lbl.gov/>. |
63 |
|
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*/ |
64 |
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|
65 |
gwlarson |
3.1 |
#include "radogl.h" |
66 |
|
|
#include "octree.h" |
67 |
|
|
|
68 |
gwlarson |
3.2 |
#define MAXLEVEL 16 /* maximum instance hierarchy level */ |
69 |
|
|
|
70 |
gwlarson |
3.1 |
typedef struct { |
71 |
|
|
int listid; /* our list id */ |
72 |
|
|
short localmatl; /* uses local material only */ |
73 |
|
|
FVECT cent; /* center of octree cube */ |
74 |
|
|
char octfile[256]; /* octree file path */ |
75 |
|
|
} OCTINST; /* octree to instantiate */ |
76 |
|
|
|
77 |
|
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static double ogetflt(); |
78 |
|
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static long ogetint(); |
79 |
|
|
static char *ogetstr(); |
80 |
greg |
3.5 |
static int loadobj(); |
81 |
|
|
static void skiptree(); |
82 |
|
|
static void octerror(); |
83 |
gwlarson |
3.1 |
static OCTINST *getoct(); |
84 |
|
|
|
85 |
|
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static char *infn; /* input file name */ |
86 |
|
|
static FILE *infp; /* input file stream */ |
87 |
|
|
static int objsize; /* size of stored OBJECT's */ |
88 |
|
|
static short otypmap[NUMOTYPE+8]; /* object type map */ |
89 |
|
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|
90 |
gwlarson |
3.4 |
static unsigned long imhash(mod) char *mod; {return((unsigned long)mod);} |
91 |
gwlarson |
3.1 |
static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0}; |
92 |
|
|
|
93 |
|
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static LUTAB ottab = LU_SINIT(free,free); |
94 |
|
|
|
95 |
|
|
|
96 |
greg |
3.5 |
int |
97 |
gwlarson |
3.1 |
o_instance(o) /* convert instance to list call */ |
98 |
|
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register OBJREC *o; |
99 |
|
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{ |
100 |
|
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XF xfs; |
101 |
|
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register OCTINST *ot; |
102 |
|
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/* set up */ |
103 |
|
|
if (o->oargs.nsargs < 1) |
104 |
|
|
objerror(o, USER, "missing octree"); |
105 |
|
|
setmaterial(NULL, NULL, 0); |
106 |
|
|
/* put out transform (if any) */ |
107 |
|
|
if (o->oargs.nsargs > 1) { |
108 |
|
|
if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) != |
109 |
|
|
o->oargs.nsargs-1) |
110 |
|
|
objerror(o, USER, "bad transform"); |
111 |
|
|
glPushAttrib(GL_TRANSFORM_BIT); |
112 |
|
|
if (xfs.sca < 1.-FTINY | xfs.sca > 1.+FTINY) |
113 |
|
|
glEnable(GL_NORMALIZE); |
114 |
|
|
glMatrixMode(GL_MODELVIEW); |
115 |
|
|
glPushMatrix(); |
116 |
|
|
/* matrix order works out to same */ |
117 |
|
|
#ifdef SMLFLT |
118 |
|
|
glMultMatrixf((GLfloat *)xfs.xfm); |
119 |
|
|
#else |
120 |
|
|
glMultMatrixd((GLdouble *)xfs.xfm); |
121 |
|
|
#endif |
122 |
|
|
} |
123 |
|
|
ot = getoct(o->oargs.sarg[0]); /* get octree reference */ |
124 |
|
|
if (ot->localmatl &= o->os != NULL) /* set material */ |
125 |
greg |
3.5 |
setmaterial((MATREC *)o->os, ot->cent, 0); |
126 |
gwlarson |
3.1 |
/* call the assigned list */ |
127 |
|
|
glCallList(ot->listid); |
128 |
|
|
|
129 |
|
|
if (o->oargs.nsargs > 1) { /* end transform */ |
130 |
gwlarson |
3.3 |
glMatrixMode(GL_MODELVIEW); |
131 |
gwlarson |
3.1 |
glPopMatrix(); |
132 |
|
|
glPopAttrib(); |
133 |
|
|
} |
134 |
|
|
rgl_checkerr("creating instance"); |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
|
138 |
|
|
static int |
139 |
|
|
buildoctlist(lp) /* build octree list */ |
140 |
|
|
LUENT *lp; |
141 |
|
|
{ |
142 |
|
|
int old_dolights = dolights, old_domats = domats; |
143 |
|
|
register OCTINST *op = (OCTINST *)lp->data; |
144 |
|
|
|
145 |
|
|
domats = !op->localmatl; /* do materials only if needed */ |
146 |
|
|
dolights = 0; /* never do light sources */ |
147 |
|
|
glNewList(op->listid, GL_COMPILE); |
148 |
|
|
loadoct(op->octfile); /* load objects into display list */ |
149 |
|
|
surfclean(); /* clean up */ |
150 |
|
|
glEndList(); |
151 |
|
|
dolights = old_dolights; /* restore */ |
152 |
|
|
domats = old_domats; |
153 |
|
|
return(1); /* return success */ |
154 |
|
|
} |
155 |
|
|
|
156 |
|
|
|
157 |
|
|
int |
158 |
|
|
loadoctrees() /* load octrees we've saved up */ |
159 |
|
|
{ |
160 |
gwlarson |
3.2 |
int levelsleft = MAXLEVEL; |
161 |
gwlarson |
3.1 |
int nocts = 0; |
162 |
|
|
LUTAB looptab; |
163 |
|
|
/* loop through new octree references */ |
164 |
|
|
while (ottab.tsiz) { |
165 |
gwlarson |
3.2 |
if (!levelsleft--) |
166 |
|
|
error(USER, "too many octree levels -- instance loop?"); |
167 |
gwlarson |
3.1 |
copystruct(&looptab, &ottab); |
168 |
|
|
ottab.tsiz = 0; |
169 |
|
|
nocts += lu_doall(&looptab, buildoctlist); |
170 |
|
|
lu_done(&looptab); |
171 |
|
|
} |
172 |
|
|
return(nocts); |
173 |
|
|
} |
174 |
|
|
|
175 |
|
|
|
176 |
|
|
static OCTINST * |
177 |
|
|
getoct(name) /* get/assign octree list id */ |
178 |
|
|
char *name; |
179 |
|
|
{ |
180 |
|
|
extern char *getpath(), *getlibpath(); |
181 |
|
|
char *path; |
182 |
|
|
register LUENT *lp; |
183 |
|
|
register OCTINST *op; |
184 |
|
|
|
185 |
|
|
if ((lp = lu_find(&ottab, name)) == NULL) |
186 |
|
|
goto memerr; |
187 |
|
|
if (lp->key == NULL) { |
188 |
|
|
lp->key = (char *)malloc(strlen(name)+1); |
189 |
|
|
if (lp->key == NULL) |
190 |
|
|
goto memerr; |
191 |
|
|
strcpy(lp->key, name); |
192 |
|
|
} |
193 |
|
|
if ((op = (OCTINST *)lp->data) == NULL) { |
194 |
|
|
path = getpath(name, getlibpath(), R_OK); |
195 |
|
|
if (path == NULL) { |
196 |
|
|
sprintf(errmsg, "cannot find octree \"%s\"", name); |
197 |
|
|
error(USER, errmsg); |
198 |
|
|
} |
199 |
|
|
op = (OCTINST *)(lp->data = (char *)malloc(sizeof(OCTINST))); |
200 |
|
|
strcpy(op->octfile, path); |
201 |
|
|
checkoct(op->octfile, op->cent); |
202 |
|
|
op->listid = newglist(); |
203 |
|
|
op->localmatl = ~0; |
204 |
|
|
} |
205 |
|
|
return(op); |
206 |
|
|
memerr: |
207 |
|
|
error(SYSTEM, "out of memory in getoct"); |
208 |
|
|
} |
209 |
|
|
|
210 |
|
|
|
211 |
|
|
double |
212 |
|
|
checkoct(fname, cent) /* check octree file for validity */ |
213 |
|
|
char *fname; |
214 |
|
|
FVECT cent; |
215 |
|
|
{ |
216 |
|
|
char sbuf[64]; |
217 |
|
|
FILE *fp = infp; |
218 |
|
|
char *fn = infn; |
219 |
|
|
double siz = 0.; |
220 |
|
|
register int i; |
221 |
|
|
|
222 |
|
|
if ((infp = fopen(infn=fname, "r")) == NULL) { |
223 |
|
|
sprintf(errmsg, "cannot open octree file \"%s\"", fname); |
224 |
|
|
error(SYSTEM, errmsg); |
225 |
|
|
} |
226 |
|
|
#ifdef MSDOS |
227 |
|
|
setmode(fileno(infp), O_BINARY); |
228 |
|
|
#endif |
229 |
|
|
/* get header */ |
230 |
|
|
if (checkheader(infp, OCTFMT, NULL) < 0) |
231 |
|
|
octerror(USER, "not an octree"); |
232 |
|
|
/* check format */ |
233 |
|
|
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 || |
234 |
|
|
objsize > MAXOBJSIZ || objsize > sizeof(long)) |
235 |
|
|
octerror("incompatible octree format"); |
236 |
|
|
if (cent != NULL) { /* get boundaries (compute center) */ |
237 |
|
|
for (i = 0; i < 3; i++) |
238 |
|
|
cent[i] = atof(ogetstr(sbuf)); |
239 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
240 |
|
|
cent[0] += siz; cent[1] += siz; cent[2] += siz; |
241 |
|
|
} else { /* get size (radius) only */ |
242 |
|
|
for (i = 0; i < 3; i++) |
243 |
|
|
ogetstr(sbuf); |
244 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
245 |
|
|
} |
246 |
|
|
fclose(infp); |
247 |
|
|
infp = fp; |
248 |
|
|
infn = fn; |
249 |
|
|
return(siz); |
250 |
|
|
} |
251 |
|
|
|
252 |
|
|
|
253 |
greg |
3.5 |
int |
254 |
gwlarson |
3.1 |
loadoct(fname) /* read in objects from octree */ |
255 |
|
|
char *fname; |
256 |
|
|
{ |
257 |
|
|
OBJECT fnobjects; |
258 |
|
|
char sbuf[256]; |
259 |
|
|
int nf; |
260 |
|
|
register int i; |
261 |
|
|
long m; |
262 |
|
|
|
263 |
|
|
infn = fname; |
264 |
|
|
infp = fopen(fname, "r"); /* assume already checked */ |
265 |
|
|
#ifdef MSDOS |
266 |
|
|
setmode(fileno(infp), O_BINARY); |
267 |
|
|
#endif |
268 |
|
|
/* skip header */ |
269 |
|
|
getheader(infp, NULL, NULL); |
270 |
|
|
/* get format */ |
271 |
|
|
objsize = ogetint(2)-OCTMAGIC; |
272 |
|
|
/* skip boundaries */ |
273 |
|
|
for (i = 0; i < 4; i++) |
274 |
|
|
ogetstr(sbuf); |
275 |
|
|
nf = 0; /* load object files */ |
276 |
|
|
while (*ogetstr(sbuf)) { |
277 |
|
|
rgl_load(sbuf); |
278 |
|
|
nf++; |
279 |
|
|
} |
280 |
|
|
/* get number of objects */ |
281 |
|
|
fnobjects = m = ogetint(objsize); |
282 |
|
|
if (fnobjects != m) |
283 |
|
|
octerror(USER, "too many objects"); |
284 |
|
|
|
285 |
|
|
if (nf == 0) { |
286 |
|
|
skiptree(); |
287 |
|
|
for (i = 0; *ogetstr(sbuf); i++) |
288 |
|
|
if ((otypmap[i] = otype(sbuf)) < 0) { |
289 |
|
|
sprintf(errmsg, "unknown type \"%s\"", sbuf); |
290 |
|
|
octerror(WARNING, errmsg); |
291 |
|
|
} |
292 |
|
|
lu_init(&imtab, 1000); nobjects = 0; |
293 |
|
|
while (loadobj() != OVOID) |
294 |
|
|
; |
295 |
|
|
lu_done(&imtab); |
296 |
|
|
if (nobjects != fnobjects) |
297 |
|
|
octerror(USER, "inconsistent object count"); |
298 |
|
|
} |
299 |
|
|
fclose(infp); |
300 |
|
|
return(nf); |
301 |
|
|
} |
302 |
|
|
|
303 |
|
|
|
304 |
|
|
static char * |
305 |
|
|
ogetstr(s) /* get null-terminated string */ |
306 |
|
|
char *s; |
307 |
|
|
{ |
308 |
|
|
extern char *getstr(); |
309 |
|
|
|
310 |
|
|
if (getstr(s, infp) == NULL) |
311 |
|
|
octerror(USER, "truncated octree"); |
312 |
|
|
return(s); |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
|
316 |
|
|
static long |
317 |
|
|
ogetint(siz) /* get a siz-byte integer */ |
318 |
|
|
int siz; |
319 |
|
|
{ |
320 |
|
|
extern long getint(); |
321 |
|
|
register long r; |
322 |
|
|
|
323 |
|
|
r = getint(siz, infp); |
324 |
|
|
if (feof(infp)) |
325 |
|
|
octerror(USER, "truncated octree"); |
326 |
|
|
return(r); |
327 |
|
|
} |
328 |
|
|
|
329 |
|
|
|
330 |
|
|
static double |
331 |
|
|
ogetflt() /* get a floating point number */ |
332 |
|
|
{ |
333 |
|
|
extern double getflt(); |
334 |
|
|
double r; |
335 |
|
|
|
336 |
|
|
r = getflt(infp); |
337 |
|
|
if (feof(infp)) |
338 |
|
|
octerror(USER, "truncated octree"); |
339 |
|
|
return(r); |
340 |
|
|
} |
341 |
|
|
|
342 |
|
|
|
343 |
greg |
3.5 |
static void |
344 |
gwlarson |
3.1 |
skiptree() /* skip octree on input */ |
345 |
|
|
{ |
346 |
|
|
register int i; |
347 |
|
|
|
348 |
|
|
switch (getc(infp)) { |
349 |
|
|
case OT_EMPTY: |
350 |
|
|
return; |
351 |
|
|
case OT_FULL: |
352 |
|
|
for (i = ogetint(objsize)*objsize; i-- > 0; ) |
353 |
|
|
if (getc(infp) == EOF) |
354 |
|
|
octerror(USER, "truncated octree"); |
355 |
|
|
return; |
356 |
|
|
case OT_TREE: |
357 |
|
|
for (i = 0; i < 8; i++) |
358 |
|
|
skiptree(); |
359 |
|
|
return; |
360 |
|
|
case EOF: |
361 |
|
|
octerror(USER, "truncated octree"); |
362 |
|
|
default: |
363 |
|
|
octerror(USER, "damaged octree"); |
364 |
|
|
} |
365 |
|
|
} |
366 |
|
|
|
367 |
|
|
|
368 |
greg |
3.5 |
static int |
369 |
gwlarson |
3.1 |
loadobj() /* get next object */ |
370 |
|
|
{ |
371 |
|
|
static OBJREC ob; |
372 |
|
|
char idbuf[MAXSTR], sbuf[MAXSTR]; |
373 |
|
|
register LUENT *lep; |
374 |
|
|
register int i; |
375 |
|
|
register long m; |
376 |
|
|
/* get type */ |
377 |
|
|
i = ogetint(1); |
378 |
|
|
if (i == -1) |
379 |
|
|
return(OVOID); /* terminator */ |
380 |
|
|
if ((ob.otype = otypmap[i]) < 0) |
381 |
|
|
octerror(USER, "reference to unknown type"); |
382 |
|
|
/* get modifier */ |
383 |
|
|
if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m) |
384 |
|
|
octerror(USER, "too many objects"); |
385 |
|
|
if ((ob.omod = m) != OVOID && domats) { |
386 |
|
|
if ((lep = lu_find(&imtab, (char *)m)) == NULL) |
387 |
|
|
goto memerr; |
388 |
|
|
ob.os = lep->data; |
389 |
|
|
} else |
390 |
|
|
ob.os = NULL; |
391 |
|
|
/* get name id */ |
392 |
|
|
ob.oname = ogetstr(idbuf); |
393 |
|
|
/* get string arguments */ |
394 |
|
|
if (ob.oargs.nsargs = ogetint(2)) { |
395 |
|
|
ob.oargs.sarg = (char **)malloc |
396 |
|
|
(ob.oargs.nsargs*sizeof(char *)); |
397 |
|
|
if (ob.oargs.sarg == NULL) |
398 |
|
|
goto memerr; |
399 |
|
|
for (i = 0; i < ob.oargs.nsargs; i++) |
400 |
|
|
ob.oargs.sarg[i] = savestr(ogetstr(sbuf)); |
401 |
|
|
} else |
402 |
|
|
ob.oargs.sarg = NULL; |
403 |
|
|
/* get integer arguments */ |
404 |
|
|
#ifdef IARGS |
405 |
|
|
if (ob.oargs.niargs = ogetint(2)) { |
406 |
|
|
ob.oargs.iarg = (long *)malloc |
407 |
|
|
(ob.oargs.niargs*sizeof(long)); |
408 |
|
|
if (ob.oargs.iarg == NULL) |
409 |
|
|
goto memerr; |
410 |
|
|
for (i = 0; i < ob.oargs.niargs; i++) |
411 |
|
|
ob.oargs.iarg[i] = ogetint(4); |
412 |
|
|
} else |
413 |
|
|
ob.oargs.iarg = NULL; |
414 |
|
|
#endif |
415 |
|
|
/* get real arguments */ |
416 |
|
|
if (ob.oargs.nfargs = ogetint(2)) { |
417 |
|
|
ob.oargs.farg = (FLOAT *)malloc |
418 |
|
|
(ob.oargs.nfargs*sizeof(FLOAT)); |
419 |
|
|
if (ob.oargs.farg == NULL) |
420 |
|
|
goto memerr; |
421 |
|
|
for (i = 0; i < ob.oargs.nfargs; i++) |
422 |
|
|
ob.oargs.farg[i] = ogetflt(); |
423 |
|
|
} else |
424 |
|
|
ob.oargs.farg = NULL; |
425 |
|
|
/* process object */ |
426 |
|
|
(*ofun[ob.otype].funp)(&ob); |
427 |
|
|
/* record material if modifier */ |
428 |
|
|
if (ismodifier(ob.otype)) { |
429 |
|
|
if ((lep = lu_find(&imtab, (char *)nobjects)) == NULL) |
430 |
|
|
goto memerr; |
431 |
|
|
lep->key = (char *)nobjects; |
432 |
|
|
lep->data = (char *)getmatp(ob.oname); |
433 |
|
|
} |
434 |
|
|
freefargs(&ob.oargs); /* free arguments */ |
435 |
|
|
return(nobjects++); /* return object id */ |
436 |
|
|
memerr: |
437 |
|
|
error(SYSTEM, "out of memory in loadobj"); |
438 |
|
|
} |
439 |
|
|
|
440 |
|
|
|
441 |
greg |
3.5 |
static void |
442 |
gwlarson |
3.1 |
octerror(etyp, msg) /* octree error */ |
443 |
|
|
int etyp; |
444 |
|
|
char *msg; |
445 |
|
|
{ |
446 |
|
|
char msgbuf[128]; |
447 |
|
|
|
448 |
|
|
sprintf(msgbuf, "(%s): %s", infn, msg); |
449 |
|
|
error(etyp, msgbuf); |
450 |
|
|
} |