1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.13 |
static const char RCSid[] = "$Id$"; |
3 |
greg |
1.1 |
#endif |
4 |
|
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/* |
5 |
|
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* readoct.c - routines to read octree information. |
6 |
greg |
2.13 |
*/ |
7 |
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8 |
greg |
2.14 |
#include "copyright.h" |
9 |
greg |
1.1 |
|
10 |
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#include "standard.h" |
11 |
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12 |
|
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#include "octree.h" |
13 |
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14 |
|
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#include "object.h" |
15 |
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16 |
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#include "otypes.h" |
17 |
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|
18 |
greg |
2.4 |
static double ogetflt(); |
19 |
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static long ogetint(); |
20 |
|
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static char *ogetstr(); |
21 |
greg |
2.12 |
static int nonsurfinset(); |
22 |
greg |
2.10 |
static int getobj(), octerror(), skiptree(); |
23 |
greg |
1.7 |
static OCTREE getfullnode(), gettree(); |
24 |
greg |
1.1 |
|
25 |
greg |
2.13 |
static char *infn; /* input file specification */ |
26 |
greg |
1.1 |
static FILE *infp; /* input file stream */ |
27 |
greg |
1.14 |
static int objsize; /* size of stored OBJECT's */ |
28 |
greg |
1.1 |
static OBJECT objorig; /* zeroeth object */ |
29 |
greg |
2.12 |
static OBJECT fnobjects; /* number of objects in this file */ |
30 |
greg |
1.1 |
static short otypmap[NUMOTYPE+8]; /* object type map */ |
31 |
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32 |
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33 |
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int |
34 |
greg |
2.13 |
readoct(inpspec, load, scene, ofn) /* read in octree file or stream */ |
35 |
|
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char *inpspec; |
36 |
greg |
1.1 |
int load; |
37 |
|
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CUBE *scene; |
38 |
|
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char *ofn[]; |
39 |
|
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{ |
40 |
greg |
1.11 |
char sbuf[512]; |
41 |
greg |
1.1 |
int nf; |
42 |
|
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register int i; |
43 |
greg |
1.15 |
long m; |
44 |
greg |
1.1 |
|
45 |
greg |
2.13 |
if (inpspec == NULL) { |
46 |
greg |
1.1 |
infn = "standard input"; |
47 |
|
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infp = stdin; |
48 |
greg |
2.13 |
} else if (inpspec[0] == '!') { |
49 |
|
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infn = inpspec; |
50 |
|
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if ((infp = popen(inpspec+1, "r")) == NULL) { |
51 |
|
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sprintf(errmsg, "cannot execute \"%s\"", inpspec); |
52 |
|
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error(SYSTEM, errmsg); |
53 |
|
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} |
54 |
greg |
1.1 |
} else { |
55 |
greg |
2.13 |
infn = inpspec; |
56 |
|
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if ((infp = fopen(inpspec, "r")) == NULL) { |
57 |
greg |
1.1 |
sprintf(errmsg, "cannot open octree file \"%s\"", |
58 |
greg |
2.13 |
inpspec); |
59 |
greg |
1.1 |
error(SYSTEM, errmsg); |
60 |
|
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} |
61 |
|
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} |
62 |
greg |
2.7 |
#ifdef MSDOS |
63 |
|
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setmode(fileno(infp), O_BINARY); |
64 |
|
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#endif |
65 |
greg |
1.1 |
/* get header */ |
66 |
greg |
2.11 |
if (checkheader(infp, OCTFMT, load&IO_INFO ? stdout : (FILE *)NULL) < 0) |
67 |
greg |
1.12 |
octerror(USER, "not an octree"); |
68 |
greg |
1.1 |
/* check format */ |
69 |
greg |
2.4 |
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 || |
70 |
greg |
1.14 |
objsize > MAXOBJSIZ || objsize > sizeof(long)) |
71 |
greg |
1.12 |
octerror(USER, "incompatible octree format"); |
72 |
greg |
1.1 |
/* get boundaries */ |
73 |
|
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if (load & IO_BOUNDS) { |
74 |
|
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for (i = 0; i < 3; i++) |
75 |
greg |
2.4 |
scene->cuorg[i] = atof(ogetstr(sbuf)); |
76 |
|
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scene->cusize = atof(ogetstr(sbuf)); |
77 |
greg |
1.1 |
} else { |
78 |
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for (i = 0; i < 4; i++) |
79 |
greg |
2.4 |
ogetstr(sbuf); |
80 |
greg |
1.1 |
} |
81 |
|
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objorig = nobjects; /* set object offset */ |
82 |
|
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nf = 0; /* get object files */ |
83 |
greg |
2.4 |
while (*ogetstr(sbuf)) { |
84 |
greg |
1.1 |
if (load & IO_SCENE) |
85 |
|
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readobj(sbuf); |
86 |
|
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if (load & IO_FILES) |
87 |
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ofn[nf] = savqstr(sbuf); |
88 |
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nf++; |
89 |
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} |
90 |
|
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if (load & IO_FILES) |
91 |
|
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ofn[nf] = NULL; |
92 |
greg |
1.8 |
/* get number of objects */ |
93 |
greg |
2.4 |
fnobjects = m = ogetint(objsize); |
94 |
greg |
1.15 |
if (fnobjects != m) |
95 |
|
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octerror(USER, "too many objects"); |
96 |
greg |
1.1 |
|
97 |
greg |
2.13 |
if (load & IO_TREE) /* get the octree */ |
98 |
greg |
1.1 |
scene->cutree = gettree(); |
99 |
greg |
2.5 |
else if (load & IO_SCENE && nf == 0) |
100 |
|
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skiptree(); |
101 |
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102 |
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if (load & IO_SCENE) /* get the scene */ |
103 |
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if (nf == 0) { |
104 |
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for (i = 0; *ogetstr(sbuf); i++) |
105 |
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if ((otypmap[i] = otype(sbuf)) < 0) { |
106 |
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sprintf(errmsg, "unknown type \"%s\"", sbuf); |
107 |
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octerror(WARNING, errmsg); |
108 |
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} |
109 |
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while (getobj() != OVOID) |
110 |
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; |
111 |
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} else { /* consistency checks */ |
112 |
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/* check object count */ |
113 |
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if (nobjects != objorig+fnobjects) |
114 |
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octerror(USER, "bad object count; octree stale?"); |
115 |
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/* check for non-surfaces */ |
116 |
greg |
2.12 |
if (dosets(nonsurfinset)) |
117 |
greg |
2.5 |
octerror(USER, "modifier in tree; octree stale?"); |
118 |
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} |
119 |
greg |
2.13 |
/* close the input */ |
120 |
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if (infn[0] == '!') |
121 |
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pclose(infp); |
122 |
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else |
123 |
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fclose(infp); |
124 |
greg |
1.1 |
return(nf); |
125 |
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} |
126 |
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127 |
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128 |
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static char * |
129 |
greg |
2.4 |
ogetstr(s) /* get null-terminated string */ |
130 |
greg |
1.1 |
char *s; |
131 |
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{ |
132 |
greg |
2.4 |
extern char *getstr(); |
133 |
greg |
1.1 |
|
134 |
greg |
2.4 |
if (getstr(s, infp) == NULL) |
135 |
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octerror(USER, "truncated octree"); |
136 |
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return(s); |
137 |
greg |
1.1 |
} |
138 |
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139 |
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140 |
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static OCTREE |
141 |
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getfullnode() /* get a set, return fullnode */ |
142 |
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{ |
143 |
greg |
2.7 |
OBJECT set[MAXSET+1]; |
144 |
greg |
1.1 |
register int i; |
145 |
greg |
1.14 |
register long m; |
146 |
greg |
1.1 |
|
147 |
greg |
2.4 |
if ((set[0] = ogetint(objsize)) > MAXSET) |
148 |
greg |
1.1 |
octerror(USER, "bad set in getfullnode"); |
149 |
greg |
1.14 |
for (i = 1; i <= set[0]; i++) { |
150 |
greg |
2.4 |
m = ogetint(objsize) + objorig; |
151 |
greg |
1.15 |
if ((set[i] = m) != m) |
152 |
greg |
1.14 |
octerror(USER, "too many objects"); |
153 |
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} |
154 |
greg |
1.1 |
return(fullnode(set)); |
155 |
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} |
156 |
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157 |
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158 |
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static long |
159 |
greg |
2.4 |
ogetint(siz) /* get a siz-byte integer */ |
160 |
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int siz; |
161 |
greg |
1.1 |
{ |
162 |
greg |
2.4 |
extern long getint(); |
163 |
greg |
1.3 |
register long r; |
164 |
greg |
1.1 |
|
165 |
greg |
2.4 |
r = getint(siz, infp); |
166 |
|
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if (feof(infp)) |
167 |
|
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octerror(USER, "truncated octree"); |
168 |
greg |
1.1 |
return(r); |
169 |
|
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} |
170 |
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171 |
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|
172 |
|
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static double |
173 |
greg |
2.4 |
ogetflt() /* get a floating point number */ |
174 |
greg |
1.1 |
{ |
175 |
greg |
2.4 |
extern double getflt(); |
176 |
greg |
2.7 |
double r; |
177 |
greg |
1.1 |
|
178 |
greg |
2.4 |
r = getflt(infp); |
179 |
|
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if (feof(infp)) |
180 |
|
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octerror(USER, "truncated octree"); |
181 |
|
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return(r); |
182 |
greg |
1.1 |
} |
183 |
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|
184 |
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|
185 |
|
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static OCTREE |
186 |
|
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gettree() /* get a pre-ordered octree */ |
187 |
|
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{ |
188 |
greg |
2.7 |
register OCTREE ot; |
189 |
greg |
1.1 |
register int i; |
190 |
|
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|
191 |
|
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switch (getc(infp)) { |
192 |
|
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case OT_EMPTY: |
193 |
|
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return(EMPTY); |
194 |
|
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case OT_FULL: |
195 |
|
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return(getfullnode()); |
196 |
|
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case OT_TREE: |
197 |
|
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if ((ot = octalloc()) == EMPTY) |
198 |
|
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octerror(SYSTEM, "out of tree space in gettree"); |
199 |
|
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for (i = 0; i < 8; i++) |
200 |
|
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octkid(ot, i) = gettree(); |
201 |
|
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return(ot); |
202 |
greg |
2.5 |
case EOF: |
203 |
|
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octerror(USER, "truncated octree"); |
204 |
|
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default: |
205 |
|
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octerror(USER, "damaged octree"); |
206 |
|
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} |
207 |
greg |
2.12 |
} |
208 |
|
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|
209 |
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|
210 |
|
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static int |
211 |
|
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nonsurfinset(os) /* check set for modifier */ |
212 |
|
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register OBJECT *os; |
213 |
|
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{ |
214 |
|
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register OBJECT s; |
215 |
|
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register int i; |
216 |
|
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|
217 |
|
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for (i = *os; i-- > 0; ) |
218 |
|
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if ((s = *++os) >= objorig && s < objorig+fnobjects && |
219 |
|
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ismodifier(objptr(s)->otype)) |
220 |
|
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return(1); |
221 |
|
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return(0); |
222 |
greg |
2.5 |
} |
223 |
|
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|
224 |
|
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|
225 |
|
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static |
226 |
|
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skiptree() /* skip octree on input */ |
227 |
|
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{ |
228 |
|
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register int i; |
229 |
|
|
|
230 |
|
|
switch (getc(infp)) { |
231 |
|
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case OT_EMPTY: |
232 |
|
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return; |
233 |
|
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case OT_FULL: |
234 |
greg |
2.6 |
for (i = ogetint(objsize)*objsize; i-- > 0; ) |
235 |
|
|
if (getc(infp) == EOF) |
236 |
|
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octerror(USER, "truncated octree"); |
237 |
greg |
2.5 |
return; |
238 |
|
|
case OT_TREE: |
239 |
|
|
for (i = 0; i < 8; i++) |
240 |
|
|
skiptree(); |
241 |
|
|
return; |
242 |
greg |
1.1 |
case EOF: |
243 |
|
|
octerror(USER, "truncated octree"); |
244 |
|
|
default: |
245 |
|
|
octerror(USER, "damaged octree"); |
246 |
|
|
} |
247 |
|
|
} |
248 |
|
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|
249 |
|
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|
250 |
|
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static |
251 |
|
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getobj() /* get next object */ |
252 |
|
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{ |
253 |
|
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char sbuf[MAXSTR]; |
254 |
|
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int obj; |
255 |
|
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register int i; |
256 |
greg |
1.14 |
register long m; |
257 |
greg |
2.7 |
register OBJREC *objp; |
258 |
greg |
1.1 |
|
259 |
greg |
2.4 |
i = ogetint(1); |
260 |
greg |
1.3 |
if (i == -1) |
261 |
greg |
1.1 |
return(OVOID); /* terminator */ |
262 |
|
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if ((obj = newobject()) == OVOID) |
263 |
|
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error(SYSTEM, "out of object space"); |
264 |
|
|
objp = objptr(obj); |
265 |
|
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if ((objp->otype = otypmap[i]) < 0) |
266 |
|
|
octerror(USER, "reference to unknown type"); |
267 |
greg |
2.4 |
if ((m = ogetint(objsize)) != OVOID) { |
268 |
greg |
1.14 |
m += objorig; |
269 |
|
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if ((OBJECT)m != m) |
270 |
|
|
octerror(USER, "too many objects"); |
271 |
|
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} |
272 |
|
|
objp->omod = m; |
273 |
greg |
2.4 |
objp->oname = savqstr(ogetstr(sbuf)); |
274 |
|
|
if (objp->oargs.nsargs = ogetint(2)) { |
275 |
greg |
2.13 |
objp->oargs.sarg = (char **)malloc |
276 |
greg |
1.1 |
(objp->oargs.nsargs*sizeof(char *)); |
277 |
|
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if (objp->oargs.sarg == NULL) |
278 |
|
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goto memerr; |
279 |
|
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for (i = 0; i < objp->oargs.nsargs; i++) |
280 |
greg |
2.4 |
objp->oargs.sarg[i] = savestr(ogetstr(sbuf)); |
281 |
greg |
1.1 |
} else |
282 |
|
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objp->oargs.sarg = NULL; |
283 |
greg |
2.7 |
#ifdef IARGS |
284 |
greg |
2.4 |
if (objp->oargs.niargs = ogetint(2)) { |
285 |
greg |
2.13 |
objp->oargs.iarg = (long *)malloc |
286 |
greg |
1.1 |
(objp->oargs.niargs*sizeof(long)); |
287 |
|
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if (objp->oargs.iarg == NULL) |
288 |
|
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goto memerr; |
289 |
|
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for (i = 0; i < objp->oargs.niargs; i++) |
290 |
greg |
2.4 |
objp->oargs.iarg[i] = ogetint(4); |
291 |
greg |
1.1 |
} else |
292 |
|
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objp->oargs.iarg = NULL; |
293 |
|
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#endif |
294 |
greg |
2.4 |
if (objp->oargs.nfargs = ogetint(2)) { |
295 |
greg |
2.13 |
objp->oargs.farg = (FLOAT *)malloc |
296 |
greg |
1.15 |
(objp->oargs.nfargs*sizeof(FLOAT)); |
297 |
greg |
1.1 |
if (objp->oargs.farg == NULL) |
298 |
|
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goto memerr; |
299 |
|
|
for (i = 0; i < objp->oargs.nfargs; i++) |
300 |
greg |
2.4 |
objp->oargs.farg[i] = ogetflt(); |
301 |
greg |
1.1 |
} else |
302 |
|
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objp->oargs.farg = NULL; |
303 |
|
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/* initialize */ |
304 |
|
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objp->os = NULL; |
305 |
|
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/* insert */ |
306 |
|
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insertobject(obj); |
307 |
|
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return(obj); |
308 |
|
|
memerr: |
309 |
|
|
error(SYSTEM, "out of memory in getobj"); |
310 |
|
|
} |
311 |
|
|
|
312 |
|
|
|
313 |
|
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static |
314 |
|
|
octerror(etyp, msg) /* octree error */ |
315 |
|
|
int etyp; |
316 |
|
|
char *msg; |
317 |
|
|
{ |
318 |
|
|
char msgbuf[128]; |
319 |
|
|
|
320 |
|
|
sprintf(msgbuf, "(%s): %s", infn, msg); |
321 |
|
|
error(etyp, msgbuf); |
322 |
|
|
} |