| 1 |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* writeoct.c - routines for writing octree information to stdout. |
| 9 |
* |
| 10 |
* 7/30/85 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include "standard.h" |
| 14 |
|
| 15 |
#include "octree.h" |
| 16 |
|
| 17 |
#include "object.h" |
| 18 |
|
| 19 |
#include "otypes.h" |
| 20 |
|
| 21 |
static int putint(), putstr(), puttree(), putobj(); |
| 22 |
|
| 23 |
|
| 24 |
writeoct(store, scene, ofn) /* write octree structures to stdout */ |
| 25 |
int store; |
| 26 |
CUBE *scene; |
| 27 |
char *ofn[]; |
| 28 |
{ |
| 29 |
char sbuf[64]; |
| 30 |
register int i; |
| 31 |
/* write format number */ |
| 32 |
putint((long)(OCTMAGIC+sizeof(OBJECT)), 2); |
| 33 |
|
| 34 |
if (!(store & IO_BOUNDS)) |
| 35 |
return; |
| 36 |
/* write boundaries */ |
| 37 |
for (i = 0; i < 3; i++) { |
| 38 |
sprintf(sbuf, "%.12g", scene->cuorg[i]); |
| 39 |
putstr(sbuf); |
| 40 |
} |
| 41 |
sprintf(sbuf, "%.12g", scene->cusize); |
| 42 |
putstr(sbuf); |
| 43 |
/* write object file names */ |
| 44 |
if (store & IO_FILES) |
| 45 |
for (i = 0; ofn[i] != NULL; i++) |
| 46 |
putstr(ofn[i]); |
| 47 |
putstr(""); |
| 48 |
/* write number of objects */ |
| 49 |
putint((long)nobjects, sizeof(OBJECT)); |
| 50 |
|
| 51 |
if (!(store & IO_TREE)) |
| 52 |
return; |
| 53 |
/* write the octree */ |
| 54 |
puttree(scene->cutree); |
| 55 |
|
| 56 |
if (store & IO_FILES || !(store & IO_SCENE)) |
| 57 |
return; |
| 58 |
/* write the scene */ |
| 59 |
for (i = 0; i < NUMOTYPE; i++) |
| 60 |
putstr(ofun[i].funame); |
| 61 |
putstr(""); |
| 62 |
for (i = 0; i < nobjects; i++) |
| 63 |
putobj(objptr(i)); |
| 64 |
putobj(NULL); |
| 65 |
} |
| 66 |
|
| 67 |
|
| 68 |
static |
| 69 |
putstr(s) /* write null-terminated string to stdout */ |
| 70 |
register char *s; |
| 71 |
{ |
| 72 |
do |
| 73 |
putc(*s, stdout); |
| 74 |
while (*s++); |
| 75 |
if (ferror(stdout)) |
| 76 |
error(SYSTEM, "write error in putstr"); |
| 77 |
} |
| 78 |
|
| 79 |
|
| 80 |
static |
| 81 |
putfullnode(fn) /* write out a full node */ |
| 82 |
OCTREE fn; |
| 83 |
{ |
| 84 |
OBJECT oset[MAXSET+1]; |
| 85 |
register int i; |
| 86 |
|
| 87 |
objset(oset, fn); |
| 88 |
for (i = 0; i <= oset[0]; i++) |
| 89 |
putint((long)oset[i], sizeof(OBJECT)); |
| 90 |
} |
| 91 |
|
| 92 |
|
| 93 |
static |
| 94 |
putint(i, siz) /* write a siz-byte integer to stdout */ |
| 95 |
register long i; |
| 96 |
register int siz; |
| 97 |
{ |
| 98 |
while (siz--) |
| 99 |
putc(i>>(siz<<3) & 0xff, stdout); |
| 100 |
if (ferror(stdout)) |
| 101 |
error(SYSTEM, "write error in putint"); |
| 102 |
} |
| 103 |
|
| 104 |
|
| 105 |
static |
| 106 |
putflt(f) /* put out floating point number */ |
| 107 |
double f; |
| 108 |
{ |
| 109 |
extern double frexp(); |
| 110 |
int e; |
| 111 |
|
| 112 |
putint((long)(frexp(f,&e)*0x7fffffff), 4); |
| 113 |
putint((long)e, 1); |
| 114 |
} |
| 115 |
|
| 116 |
|
| 117 |
static |
| 118 |
puttree(ot) /* write octree to stdout in pre-order form */ |
| 119 |
register OCTREE ot; |
| 120 |
{ |
| 121 |
register int i; |
| 122 |
|
| 123 |
if (istree(ot)) { |
| 124 |
putc(OT_TREE, stdout); /* indicate tree */ |
| 125 |
for (i = 0; i < 8; i++) /* write tree */ |
| 126 |
puttree(octkid(ot, i)); |
| 127 |
} else if (isfull(ot)) { |
| 128 |
putc(OT_FULL, stdout); /* indicate fullnode */ |
| 129 |
putfullnode(ot); /* write fullnode */ |
| 130 |
} else |
| 131 |
putc(OT_EMPTY, stdout); /* indicate empty */ |
| 132 |
} |
| 133 |
|
| 134 |
|
| 135 |
static |
| 136 |
putobj(o) /* write out object */ |
| 137 |
register OBJREC *o; |
| 138 |
{ |
| 139 |
register int i; |
| 140 |
|
| 141 |
if (o == NULL) { /* terminator */ |
| 142 |
putint(-1L, 1); |
| 143 |
return; |
| 144 |
} |
| 145 |
putint((long)o->otype, 1); |
| 146 |
putint((long)o->omod, sizeof(OBJECT)); |
| 147 |
putstr(o->oname); |
| 148 |
putint((long)o->oargs.nsargs, 2); |
| 149 |
for (i = 0; i < o->oargs.nsargs; i++) |
| 150 |
putstr(o->oargs.sarg[i]); |
| 151 |
#ifdef IARGS |
| 152 |
putint((long)o->oargs.niargs, 2); |
| 153 |
for (i = 0; i < o->oargs.niargs; i++) |
| 154 |
putint((long)o->oargs.iarg[i], 4); |
| 155 |
#endif |
| 156 |
putint((long)o->oargs.nfargs, 2); |
| 157 |
for (i = 0; i < o->oargs.nfargs; i++) |
| 158 |
putflt(o->oargs.farg[i]); |
| 159 |
} |
