| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: sceneio.c,v 2.5 2011/09/22 02:15:56 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Portable, binary Radiance i/o routines. |
| 6 |
* |
| 7 |
* Called from octree and mesh i/o routines. |
| 8 |
*/ |
| 9 |
|
| 10 |
#include "copyright.h" |
| 11 |
#include "standard.h" |
| 12 |
#include "octree.h" |
| 13 |
#include "object.h" |
| 14 |
#include "otypes.h" |
| 15 |
|
| 16 |
static OBJECT object0; /* zeroeth object */ |
| 17 |
static short otypmap[NUMOTYPE+32]; /* object type map */ |
| 18 |
|
| 19 |
|
| 20 |
static int |
| 21 |
getobj( /* get next object */ |
| 22 |
FILE *fp, |
| 23 |
int objsiz |
| 24 |
) |
| 25 |
{ |
| 26 |
char sbuf[MAXSTR]; |
| 27 |
int obj; |
| 28 |
int i; |
| 29 |
long m; |
| 30 |
OBJREC *objp; |
| 31 |
|
| 32 |
i = getint(1, fp); |
| 33 |
if (i == -1) |
| 34 |
return(OVOID); /* terminator */ |
| 35 |
if ((obj = newobject()) == OVOID) |
| 36 |
error(SYSTEM, "out of object space"); |
| 37 |
objp = objptr(obj); |
| 38 |
if ((objp->otype = otypmap[i]) < 0) |
| 39 |
error(USER, "reference to unknown type"); |
| 40 |
if ((m = getint(objsiz, fp)) != OVOID) { |
| 41 |
m += object0; |
| 42 |
if ((OBJECT)m != m) |
| 43 |
error(INTERNAL, "too many objects in getobj"); |
| 44 |
} |
| 45 |
objp->omod = m; |
| 46 |
objp->oname = savqstr(getstr(sbuf, fp)); |
| 47 |
if ((objp->oargs.nsargs = getint(2, fp)) > 0) { |
| 48 |
objp->oargs.sarg = (char **)malloc |
| 49 |
(objp->oargs.nsargs*sizeof(char *)); |
| 50 |
if (objp->oargs.sarg == NULL) |
| 51 |
goto memerr; |
| 52 |
for (i = 0; i < objp->oargs.nsargs; i++) |
| 53 |
objp->oargs.sarg[i] = savestr(getstr(sbuf, fp)); |
| 54 |
} else |
| 55 |
objp->oargs.sarg = NULL; |
| 56 |
#ifdef IARGS |
| 57 |
if ((objp->oargs.niargs = getint(2, fp)) > 0) { |
| 58 |
objp->oargs.iarg = (long *)malloc |
| 59 |
(objp->oargs.niargs*sizeof(long)); |
| 60 |
if (objp->oargs.iarg == NULL) |
| 61 |
goto memerr; |
| 62 |
for (i = 0; i < objp->oargs.niargs; i++) |
| 63 |
objp->oargs.iarg[i] = getint(4, fp); |
| 64 |
} else |
| 65 |
objp->oargs.iarg = NULL; |
| 66 |
#endif |
| 67 |
if ((objp->oargs.nfargs = getint(2, fp)) > 0) { |
| 68 |
objp->oargs.farg = (RREAL *)malloc |
| 69 |
(objp->oargs.nfargs*sizeof(RREAL)); |
| 70 |
if (objp->oargs.farg == NULL) |
| 71 |
goto memerr; |
| 72 |
for (i = 0; i < objp->oargs.nfargs; i++) |
| 73 |
objp->oargs.farg[i] = getflt(fp); |
| 74 |
} else |
| 75 |
objp->oargs.farg = NULL; |
| 76 |
if (feof(fp)) |
| 77 |
error(SYSTEM, "unexpected EOF in getobj"); |
| 78 |
/* initialize */ |
| 79 |
objp->os = NULL; |
| 80 |
/* insert */ |
| 81 |
insertobject(obj); |
| 82 |
return(obj); |
| 83 |
memerr: |
| 84 |
error(SYSTEM, "out of memory in getobj"); |
| 85 |
return 0; /* pro forma return */ |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
void |
| 90 |
readscene( /* read binary scene description */ |
| 91 |
FILE *fp, |
| 92 |
int objsiz |
| 93 |
) |
| 94 |
{ |
| 95 |
char sbuf[32]; |
| 96 |
int i; |
| 97 |
/* record starting object */ |
| 98 |
object0 = nobjects; |
| 99 |
/* read type map */ |
| 100 |
for (i = 0; getstr(sbuf, fp) != NULL && sbuf[0]; i++) |
| 101 |
if ((otypmap[i] = otype(sbuf)) < 0) { |
| 102 |
sprintf(errmsg, "unknown object type \"%s\"", |
| 103 |
sbuf); |
| 104 |
error(WARNING, errmsg); |
| 105 |
} |
| 106 |
/* read objects */ |
| 107 |
while (getobj(fp, objsiz) != OVOID) |
| 108 |
; |
| 109 |
} |
| 110 |
|
| 111 |
|
| 112 |
static void |
| 113 |
putobj( /* write out object */ |
| 114 |
OBJREC *o, |
| 115 |
FILE *fp |
| 116 |
) |
| 117 |
{ |
| 118 |
int i; |
| 119 |
|
| 120 |
if (o == NULL) { /* terminator */ |
| 121 |
putint(-1L, 1, fp); |
| 122 |
return; |
| 123 |
} |
| 124 |
putint((long)o->otype, 1, fp); |
| 125 |
putint((long)o->omod, sizeof(OBJECT), fp); |
| 126 |
putstr(o->oname, fp); |
| 127 |
putint((long)o->oargs.nsargs, 2, fp); |
| 128 |
for (i = 0; i < o->oargs.nsargs; i++) |
| 129 |
putstr(o->oargs.sarg[i], fp); |
| 130 |
#ifdef IARGS |
| 131 |
putint((long)o->oargs.niargs, 2, fp); |
| 132 |
for (i = 0; i < o->oargs.niargs; i++) |
| 133 |
putint((long)o->oargs.iarg[i], 4, fp); |
| 134 |
#endif |
| 135 |
putint((long)o->oargs.nfargs, 2, fp); |
| 136 |
for (i = 0; i < o->oargs.nfargs; i++) |
| 137 |
putflt(o->oargs.farg[i], fp); |
| 138 |
} |
| 139 |
|
| 140 |
|
| 141 |
void |
| 142 |
writescene( /* write binary scene description */ |
| 143 |
int firstobj, |
| 144 |
int nobjs, |
| 145 |
FILE *fp |
| 146 |
) |
| 147 |
{ |
| 148 |
int i; |
| 149 |
/* write out type list */ |
| 150 |
for (i = 0; i < NUMOTYPE; i++) |
| 151 |
putstr(ofun[i].funame, fp); |
| 152 |
putstr("", fp); |
| 153 |
/* write objects */ |
| 154 |
for (i = firstobj; i < firstobj+nobjs; i++) |
| 155 |
putobj(objptr(i), fp); |
| 156 |
putobj(NULL, fp); /* terminator */ |
| 157 |
if (fflush(fp) == EOF) |
| 158 |
error(SYSTEM, "output error in writescene"); |
| 159 |
} |
