| 1 |
gwlarson |
3.1 |
#ifndef lint |
| 2 |
greg |
3.5 |
static const char RCSid[] = "$Id$"; |
| 3 |
gwlarson |
3.1 |
#endif |
| 4 |
|
|
/* |
| 5 |
|
|
* Routines for reading instances and converting to OpenGL. |
| 6 |
|
|
*/ |
| 7 |
|
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|
| 8 |
greg |
3.6 |
#include "copyright.h" |
| 9 |
greg |
3.5 |
|
| 10 |
gwlarson |
3.1 |
#include "radogl.h" |
| 11 |
|
|
#include "octree.h" |
| 12 |
|
|
|
| 13 |
gwlarson |
3.2 |
#define MAXLEVEL 16 /* maximum instance hierarchy level */ |
| 14 |
|
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|
| 15 |
gwlarson |
3.1 |
typedef struct { |
| 16 |
|
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int listid; /* our list id */ |
| 17 |
|
|
short localmatl; /* uses local material only */ |
| 18 |
|
|
FVECT cent; /* center of octree cube */ |
| 19 |
|
|
char octfile[256]; /* octree file path */ |
| 20 |
|
|
} OCTINST; /* octree to instantiate */ |
| 21 |
|
|
|
| 22 |
|
|
static double ogetflt(); |
| 23 |
|
|
static long ogetint(); |
| 24 |
|
|
static char *ogetstr(); |
| 25 |
greg |
3.5 |
static int loadobj(); |
| 26 |
|
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static void skiptree(); |
| 27 |
|
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static void octerror(); |
| 28 |
gwlarson |
3.1 |
static OCTINST *getoct(); |
| 29 |
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|
|
| 30 |
|
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static char *infn; /* input file name */ |
| 31 |
|
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static FILE *infp; /* input file stream */ |
| 32 |
|
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static int objsize; /* size of stored OBJECT's */ |
| 33 |
|
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static short otypmap[NUMOTYPE+8]; /* object type map */ |
| 34 |
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|
| 35 |
gwlarson |
3.4 |
static unsigned long imhash(mod) char *mod; {return((unsigned long)mod);} |
| 36 |
gwlarson |
3.1 |
static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0}; |
| 37 |
|
|
|
| 38 |
|
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static LUTAB ottab = LU_SINIT(free,free); |
| 39 |
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|
| 40 |
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|
| 41 |
greg |
3.5 |
int |
| 42 |
gwlarson |
3.1 |
o_instance(o) /* convert instance to list call */ |
| 43 |
|
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register OBJREC *o; |
| 44 |
|
|
{ |
| 45 |
|
|
XF xfs; |
| 46 |
|
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register OCTINST *ot; |
| 47 |
|
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/* set up */ |
| 48 |
|
|
if (o->oargs.nsargs < 1) |
| 49 |
|
|
objerror(o, USER, "missing octree"); |
| 50 |
|
|
setmaterial(NULL, NULL, 0); |
| 51 |
|
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/* put out transform (if any) */ |
| 52 |
|
|
if (o->oargs.nsargs > 1) { |
| 53 |
|
|
if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) != |
| 54 |
|
|
o->oargs.nsargs-1) |
| 55 |
|
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objerror(o, USER, "bad transform"); |
| 56 |
|
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glPushAttrib(GL_TRANSFORM_BIT); |
| 57 |
|
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if (xfs.sca < 1.-FTINY | xfs.sca > 1.+FTINY) |
| 58 |
|
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glEnable(GL_NORMALIZE); |
| 59 |
|
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glMatrixMode(GL_MODELVIEW); |
| 60 |
|
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glPushMatrix(); |
| 61 |
|
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/* matrix order works out to same */ |
| 62 |
|
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#ifdef SMLFLT |
| 63 |
|
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glMultMatrixf((GLfloat *)xfs.xfm); |
| 64 |
|
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#else |
| 65 |
|
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glMultMatrixd((GLdouble *)xfs.xfm); |
| 66 |
|
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#endif |
| 67 |
|
|
} |
| 68 |
|
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ot = getoct(o->oargs.sarg[0]); /* get octree reference */ |
| 69 |
|
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if (ot->localmatl &= o->os != NULL) /* set material */ |
| 70 |
greg |
3.5 |
setmaterial((MATREC *)o->os, ot->cent, 0); |
| 71 |
gwlarson |
3.1 |
/* call the assigned list */ |
| 72 |
|
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glCallList(ot->listid); |
| 73 |
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|
| 74 |
|
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if (o->oargs.nsargs > 1) { /* end transform */ |
| 75 |
gwlarson |
3.3 |
glMatrixMode(GL_MODELVIEW); |
| 76 |
gwlarson |
3.1 |
glPopMatrix(); |
| 77 |
|
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glPopAttrib(); |
| 78 |
|
|
} |
| 79 |
|
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rgl_checkerr("creating instance"); |
| 80 |
greg |
3.7 |
return(0); |
| 81 |
gwlarson |
3.1 |
} |
| 82 |
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|
|
| 83 |
|
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|
| 84 |
|
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static int |
| 85 |
|
|
buildoctlist(lp) /* build octree list */ |
| 86 |
|
|
LUENT *lp; |
| 87 |
|
|
{ |
| 88 |
|
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int old_dolights = dolights, old_domats = domats; |
| 89 |
|
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register OCTINST *op = (OCTINST *)lp->data; |
| 90 |
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|
| 91 |
|
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domats = !op->localmatl; /* do materials only if needed */ |
| 92 |
|
|
dolights = 0; /* never do light sources */ |
| 93 |
|
|
glNewList(op->listid, GL_COMPILE); |
| 94 |
|
|
loadoct(op->octfile); /* load objects into display list */ |
| 95 |
|
|
surfclean(); /* clean up */ |
| 96 |
|
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glEndList(); |
| 97 |
|
|
dolights = old_dolights; /* restore */ |
| 98 |
|
|
domats = old_domats; |
| 99 |
|
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return(1); /* return success */ |
| 100 |
|
|
} |
| 101 |
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| 102 |
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|
| 103 |
|
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int |
| 104 |
|
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loadoctrees() /* load octrees we've saved up */ |
| 105 |
|
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{ |
| 106 |
gwlarson |
3.2 |
int levelsleft = MAXLEVEL; |
| 107 |
gwlarson |
3.1 |
int nocts = 0; |
| 108 |
|
|
LUTAB looptab; |
| 109 |
|
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/* loop through new octree references */ |
| 110 |
|
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while (ottab.tsiz) { |
| 111 |
gwlarson |
3.2 |
if (!levelsleft--) |
| 112 |
|
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error(USER, "too many octree levels -- instance loop?"); |
| 113 |
gwlarson |
3.1 |
copystruct(&looptab, &ottab); |
| 114 |
|
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ottab.tsiz = 0; |
| 115 |
|
|
nocts += lu_doall(&looptab, buildoctlist); |
| 116 |
|
|
lu_done(&looptab); |
| 117 |
|
|
} |
| 118 |
|
|
return(nocts); |
| 119 |
|
|
} |
| 120 |
|
|
|
| 121 |
|
|
|
| 122 |
|
|
static OCTINST * |
| 123 |
|
|
getoct(name) /* get/assign octree list id */ |
| 124 |
|
|
char *name; |
| 125 |
|
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{ |
| 126 |
|
|
extern char *getpath(), *getlibpath(); |
| 127 |
|
|
char *path; |
| 128 |
|
|
register LUENT *lp; |
| 129 |
|
|
register OCTINST *op; |
| 130 |
|
|
|
| 131 |
|
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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 |
|
|
path = getpath(name, getlibpath(), R_OK); |
| 141 |
|
|
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 |
|
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{ |
| 162 |
|
|
char sbuf[64]; |
| 163 |
|
|
FILE *fp = infp; |
| 164 |
|
|
char *fn = infn; |
| 165 |
|
|
double siz = 0.; |
| 166 |
|
|
register int i; |
| 167 |
|
|
|
| 168 |
|
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if ((infp = fopen(infn=fname, "r")) == NULL) { |
| 169 |
|
|
sprintf(errmsg, "cannot open octree file \"%s\"", fname); |
| 170 |
|
|
error(SYSTEM, errmsg); |
| 171 |
|
|
} |
| 172 |
|
|
#ifdef MSDOS |
| 173 |
|
|
setmode(fileno(infp), O_BINARY); |
| 174 |
|
|
#endif |
| 175 |
|
|
/* get header */ |
| 176 |
|
|
if (checkheader(infp, OCTFMT, NULL) < 0) |
| 177 |
|
|
octerror(USER, "not an octree"); |
| 178 |
|
|
/* check format */ |
| 179 |
|
|
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 || |
| 180 |
|
|
objsize > MAXOBJSIZ || objsize > sizeof(long)) |
| 181 |
|
|
octerror("incompatible octree format"); |
| 182 |
|
|
if (cent != NULL) { /* get boundaries (compute center) */ |
| 183 |
|
|
for (i = 0; i < 3; i++) |
| 184 |
|
|
cent[i] = atof(ogetstr(sbuf)); |
| 185 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
| 186 |
|
|
cent[0] += siz; cent[1] += siz; cent[2] += siz; |
| 187 |
|
|
} else { /* get size (radius) only */ |
| 188 |
|
|
for (i = 0; i < 3; i++) |
| 189 |
|
|
ogetstr(sbuf); |
| 190 |
|
|
siz = atof(ogetstr(sbuf))*.5; |
| 191 |
|
|
} |
| 192 |
|
|
fclose(infp); |
| 193 |
|
|
infp = fp; |
| 194 |
|
|
infn = fn; |
| 195 |
|
|
return(siz); |
| 196 |
|
|
} |
| 197 |
|
|
|
| 198 |
|
|
|
| 199 |
greg |
3.5 |
int |
| 200 |
gwlarson |
3.1 |
loadoct(fname) /* read in objects from octree */ |
| 201 |
|
|
char *fname; |
| 202 |
|
|
{ |
| 203 |
|
|
OBJECT fnobjects; |
| 204 |
|
|
char sbuf[256]; |
| 205 |
|
|
int nf; |
| 206 |
|
|
register int i; |
| 207 |
|
|
long m; |
| 208 |
|
|
|
| 209 |
|
|
infn = fname; |
| 210 |
|
|
infp = fopen(fname, "r"); /* assume already checked */ |
| 211 |
|
|
#ifdef MSDOS |
| 212 |
|
|
setmode(fileno(infp), O_BINARY); |
| 213 |
|
|
#endif |
| 214 |
|
|
/* skip header */ |
| 215 |
|
|
getheader(infp, NULL, NULL); |
| 216 |
|
|
/* get format */ |
| 217 |
|
|
objsize = ogetint(2)-OCTMAGIC; |
| 218 |
|
|
/* skip boundaries */ |
| 219 |
|
|
for (i = 0; i < 4; i++) |
| 220 |
|
|
ogetstr(sbuf); |
| 221 |
|
|
nf = 0; /* load object files */ |
| 222 |
|
|
while (*ogetstr(sbuf)) { |
| 223 |
|
|
rgl_load(sbuf); |
| 224 |
|
|
nf++; |
| 225 |
|
|
} |
| 226 |
|
|
/* get number of objects */ |
| 227 |
|
|
fnobjects = m = ogetint(objsize); |
| 228 |
|
|
if (fnobjects != m) |
| 229 |
|
|
octerror(USER, "too many objects"); |
| 230 |
|
|
|
| 231 |
|
|
if (nf == 0) { |
| 232 |
|
|
skiptree(); |
| 233 |
|
|
for (i = 0; *ogetstr(sbuf); i++) |
| 234 |
|
|
if ((otypmap[i] = otype(sbuf)) < 0) { |
| 235 |
|
|
sprintf(errmsg, "unknown type \"%s\"", sbuf); |
| 236 |
|
|
octerror(WARNING, errmsg); |
| 237 |
|
|
} |
| 238 |
|
|
lu_init(&imtab, 1000); nobjects = 0; |
| 239 |
|
|
while (loadobj() != OVOID) |
| 240 |
|
|
; |
| 241 |
|
|
lu_done(&imtab); |
| 242 |
|
|
if (nobjects != fnobjects) |
| 243 |
|
|
octerror(USER, "inconsistent object count"); |
| 244 |
|
|
} |
| 245 |
|
|
fclose(infp); |
| 246 |
|
|
return(nf); |
| 247 |
|
|
} |
| 248 |
|
|
|
| 249 |
|
|
|
| 250 |
|
|
static char * |
| 251 |
|
|
ogetstr(s) /* get null-terminated string */ |
| 252 |
|
|
char *s; |
| 253 |
|
|
{ |
| 254 |
|
|
extern char *getstr(); |
| 255 |
|
|
|
| 256 |
|
|
if (getstr(s, infp) == NULL) |
| 257 |
|
|
octerror(USER, "truncated octree"); |
| 258 |
|
|
return(s); |
| 259 |
|
|
} |
| 260 |
|
|
|
| 261 |
|
|
|
| 262 |
|
|
static long |
| 263 |
|
|
ogetint(siz) /* get a siz-byte integer */ |
| 264 |
|
|
int siz; |
| 265 |
|
|
{ |
| 266 |
|
|
extern long getint(); |
| 267 |
|
|
register long r; |
| 268 |
|
|
|
| 269 |
|
|
r = getint(siz, infp); |
| 270 |
|
|
if (feof(infp)) |
| 271 |
|
|
octerror(USER, "truncated octree"); |
| 272 |
|
|
return(r); |
| 273 |
|
|
} |
| 274 |
|
|
|
| 275 |
|
|
|
| 276 |
|
|
static double |
| 277 |
|
|
ogetflt() /* get a floating point number */ |
| 278 |
|
|
{ |
| 279 |
|
|
extern double getflt(); |
| 280 |
|
|
double r; |
| 281 |
|
|
|
| 282 |
|
|
r = getflt(infp); |
| 283 |
|
|
if (feof(infp)) |
| 284 |
|
|
octerror(USER, "truncated octree"); |
| 285 |
|
|
return(r); |
| 286 |
|
|
} |
| 287 |
|
|
|
| 288 |
|
|
|
| 289 |
greg |
3.5 |
static void |
| 290 |
gwlarson |
3.1 |
skiptree() /* skip octree on input */ |
| 291 |
|
|
{ |
| 292 |
|
|
register int i; |
| 293 |
|
|
|
| 294 |
|
|
switch (getc(infp)) { |
| 295 |
|
|
case OT_EMPTY: |
| 296 |
|
|
return; |
| 297 |
|
|
case OT_FULL: |
| 298 |
|
|
for (i = ogetint(objsize)*objsize; i-- > 0; ) |
| 299 |
|
|
if (getc(infp) == EOF) |
| 300 |
|
|
octerror(USER, "truncated octree"); |
| 301 |
|
|
return; |
| 302 |
|
|
case OT_TREE: |
| 303 |
|
|
for (i = 0; i < 8; i++) |
| 304 |
|
|
skiptree(); |
| 305 |
|
|
return; |
| 306 |
|
|
case EOF: |
| 307 |
|
|
octerror(USER, "truncated octree"); |
| 308 |
|
|
default: |
| 309 |
|
|
octerror(USER, "damaged octree"); |
| 310 |
|
|
} |
| 311 |
|
|
} |
| 312 |
|
|
|
| 313 |
|
|
|
| 314 |
greg |
3.5 |
static int |
| 315 |
gwlarson |
3.1 |
loadobj() /* get next object */ |
| 316 |
|
|
{ |
| 317 |
|
|
static OBJREC ob; |
| 318 |
|
|
char idbuf[MAXSTR], sbuf[MAXSTR]; |
| 319 |
|
|
register LUENT *lep; |
| 320 |
|
|
register int i; |
| 321 |
|
|
register long m; |
| 322 |
|
|
/* get type */ |
| 323 |
|
|
i = ogetint(1); |
| 324 |
|
|
if (i == -1) |
| 325 |
|
|
return(OVOID); /* terminator */ |
| 326 |
|
|
if ((ob.otype = otypmap[i]) < 0) |
| 327 |
|
|
octerror(USER, "reference to unknown type"); |
| 328 |
|
|
/* get modifier */ |
| 329 |
|
|
if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m) |
| 330 |
|
|
octerror(USER, "too many objects"); |
| 331 |
|
|
if ((ob.omod = m) != OVOID && domats) { |
| 332 |
|
|
if ((lep = lu_find(&imtab, (char *)m)) == NULL) |
| 333 |
|
|
goto memerr; |
| 334 |
|
|
ob.os = lep->data; |
| 335 |
|
|
} else |
| 336 |
|
|
ob.os = NULL; |
| 337 |
|
|
/* get name id */ |
| 338 |
|
|
ob.oname = ogetstr(idbuf); |
| 339 |
|
|
/* get string arguments */ |
| 340 |
|
|
if (ob.oargs.nsargs = ogetint(2)) { |
| 341 |
|
|
ob.oargs.sarg = (char **)malloc |
| 342 |
|
|
(ob.oargs.nsargs*sizeof(char *)); |
| 343 |
|
|
if (ob.oargs.sarg == NULL) |
| 344 |
|
|
goto memerr; |
| 345 |
|
|
for (i = 0; i < ob.oargs.nsargs; i++) |
| 346 |
|
|
ob.oargs.sarg[i] = savestr(ogetstr(sbuf)); |
| 347 |
|
|
} else |
| 348 |
|
|
ob.oargs.sarg = NULL; |
| 349 |
|
|
/* get integer arguments */ |
| 350 |
|
|
#ifdef IARGS |
| 351 |
|
|
if (ob.oargs.niargs = ogetint(2)) { |
| 352 |
|
|
ob.oargs.iarg = (long *)malloc |
| 353 |
|
|
(ob.oargs.niargs*sizeof(long)); |
| 354 |
|
|
if (ob.oargs.iarg == NULL) |
| 355 |
|
|
goto memerr; |
| 356 |
|
|
for (i = 0; i < ob.oargs.niargs; i++) |
| 357 |
|
|
ob.oargs.iarg[i] = ogetint(4); |
| 358 |
|
|
} else |
| 359 |
|
|
ob.oargs.iarg = NULL; |
| 360 |
|
|
#endif |
| 361 |
|
|
/* get real arguments */ |
| 362 |
|
|
if (ob.oargs.nfargs = ogetint(2)) { |
| 363 |
|
|
ob.oargs.farg = (FLOAT *)malloc |
| 364 |
|
|
(ob.oargs.nfargs*sizeof(FLOAT)); |
| 365 |
|
|
if (ob.oargs.farg == NULL) |
| 366 |
|
|
goto memerr; |
| 367 |
|
|
for (i = 0; i < ob.oargs.nfargs; i++) |
| 368 |
|
|
ob.oargs.farg[i] = ogetflt(); |
| 369 |
|
|
} else |
| 370 |
|
|
ob.oargs.farg = NULL; |
| 371 |
|
|
/* process object */ |
| 372 |
|
|
(*ofun[ob.otype].funp)(&ob); |
| 373 |
|
|
/* record material if modifier */ |
| 374 |
|
|
if (ismodifier(ob.otype)) { |
| 375 |
|
|
if ((lep = lu_find(&imtab, (char *)nobjects)) == NULL) |
| 376 |
|
|
goto memerr; |
| 377 |
|
|
lep->key = (char *)nobjects; |
| 378 |
|
|
lep->data = (char *)getmatp(ob.oname); |
| 379 |
|
|
} |
| 380 |
|
|
freefargs(&ob.oargs); /* free arguments */ |
| 381 |
|
|
return(nobjects++); /* return object id */ |
| 382 |
|
|
memerr: |
| 383 |
|
|
error(SYSTEM, "out of memory in loadobj"); |
| 384 |
|
|
} |
| 385 |
|
|
|
| 386 |
|
|
|
| 387 |
greg |
3.5 |
static void |
| 388 |
gwlarson |
3.1 |
octerror(etyp, msg) /* octree error */ |
| 389 |
|
|
int etyp; |
| 390 |
|
|
char *msg; |
| 391 |
|
|
{ |
| 392 |
|
|
char msgbuf[128]; |
| 393 |
|
|
|
| 394 |
|
|
sprintf(msgbuf, "(%s): %s", infn, msg); |
| 395 |
|
|
error(etyp, msgbuf); |
| 396 |
|
|
} |
