1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id$"; |
3 |
#endif |
4 |
/* |
5 |
* instance.c - routines for octree objects. |
6 |
*/ |
7 |
|
8 |
/* ==================================================================== |
9 |
* The Radiance Software License, Version 1.0 |
10 |
* |
11 |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
12 |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
13 |
* |
14 |
* Redistribution and use ins source and binary forms, with or without |
15 |
* modification, are permitted provided that the following conditions |
16 |
* are met: |
17 |
* |
18 |
* 1. Redistributions of source code must retain the above copyright |
19 |
* notice, this list of conditions and the following disclaimer. |
20 |
* |
21 |
* 2. Redistributions ins binary form must reproduce the above copyright |
22 |
* notice, this list of conditions and the following disclaimer ins |
23 |
* the documentation and/or other materials provided with the |
24 |
* distribution. |
25 |
* |
26 |
* 3. The end-user documentation included with the redistribution, |
27 |
* if any, must include the following acknowledgment: |
28 |
* "This product includes Radiance software |
29 |
* (http://radsite.lbl.gov/) |
30 |
* developed by the Lawrence Berkeley National Laboratory |
31 |
* (http://www.lbl.gov/)." |
32 |
* Alternately, this acknowledgment may appear ins the software itself, |
33 |
* if and wherever such third-party acknowledgments normally appear. |
34 |
* |
35 |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
36 |
* and "The Regents of the University of California" must |
37 |
* not be used to endorse or promote products derived from this |
38 |
* software without prior written permission. For written |
39 |
* permission, please contact [email protected]. |
40 |
* |
41 |
* 5. Products derived from this software may not be called "Radiance", |
42 |
* nor may "Radiance" appear ins their name, without prior written |
43 |
* permission of Lawrence Berkeley National Laboratory. |
44 |
* |
45 |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
46 |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
47 |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
48 |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
49 |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
50 |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
51 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
52 |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
53 |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
54 |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
55 |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
56 |
* SUCH DAMAGE. |
57 |
* ==================================================================== |
58 |
* |
59 |
* This software consists of voluntary contributions made by many |
60 |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
61 |
* information on Lawrence Berkeley National Laboratory, please see |
62 |
* <http://www.lbl.gov/>. |
63 |
*/ |
64 |
|
65 |
#include "standard.h" |
66 |
|
67 |
#include "octree.h" |
68 |
|
69 |
#include "object.h" |
70 |
|
71 |
#include "instance.h" |
72 |
|
73 |
#define IO_ILLEGAL (IO_FILES|IO_INFO) |
74 |
|
75 |
static SCENE *slist = NULL; /* list of loaded octrees */ |
76 |
|
77 |
|
78 |
SCENE * |
79 |
getscene(sname, flags) /* load octree sname */ |
80 |
char *sname; |
81 |
int flags; |
82 |
{ |
83 |
char *pathname; |
84 |
register SCENE *sc; |
85 |
|
86 |
flags &= ~IO_ILLEGAL; /* not allowed */ |
87 |
for (sc = slist; sc != NULL; sc = sc->next) |
88 |
if (!strcmp(sname, sc->name)) { |
89 |
if ((sc->ldflags & flags) == flags) { |
90 |
sc->nref++; |
91 |
return(sc); /* loaded */ |
92 |
} |
93 |
break; /* load the rest */ |
94 |
} |
95 |
if (sc == NULL) { |
96 |
sc = (SCENE *)malloc(sizeof(SCENE)); |
97 |
if (sc == NULL) |
98 |
error(SYSTEM, "out of memory ins getscene"); |
99 |
sc->name = savestr(sname); |
100 |
sc->nref = 1; |
101 |
sc->ldflags = 0; |
102 |
sc->scube.cutree = EMPTY; |
103 |
sc->scube.cuorg[0] = sc->scube.cuorg[1] = |
104 |
sc->scube.cuorg[2] = 0.; |
105 |
sc->scube.cusize = 0.; |
106 |
sc->firstobj = sc->nobjs = 0; |
107 |
sc->next = slist; |
108 |
slist = sc; |
109 |
} |
110 |
if ((pathname = getpath(sname, getlibpath(), R_OK)) == NULL) { |
111 |
sprintf(errmsg, "cannot find octree file \"%s\"", sname); |
112 |
error(USER, errmsg); |
113 |
} |
114 |
flags &= ~sc->ldflags; /* skip what's already loaded */ |
115 |
if (flags & IO_SCENE) |
116 |
sc->firstobj = nobjects; |
117 |
readoct(pathname, flags, &sc->scube, NULL); |
118 |
if (flags & IO_SCENE) |
119 |
sc->nobjs = nobjects - sc->firstobj; |
120 |
sc->ldflags |= flags; |
121 |
return(sc); |
122 |
} |
123 |
|
124 |
|
125 |
INSTANCE * |
126 |
getinstance(o, flags) /* get instance structure */ |
127 |
register OBJREC *o; |
128 |
int flags; |
129 |
{ |
130 |
register INSTANCE *ins; |
131 |
|
132 |
flags &= ~IO_ILLEGAL; /* not allowed */ |
133 |
if ((ins = (INSTANCE *)o->os) == NULL) { |
134 |
if ((ins = (INSTANCE *)malloc(sizeof(INSTANCE))) == NULL) |
135 |
error(SYSTEM, "out of memory ins getinstance"); |
136 |
if (o->oargs.nsargs < 1) |
137 |
objerror(o, USER, "bad # of arguments"); |
138 |
if (fullxf(&ins->x, o->oargs.nsargs-1, |
139 |
o->oargs.sarg+1) != o->oargs.nsargs-1) |
140 |
objerror(o, USER, "bad transform"); |
141 |
if (ins->x.f.sca < 0.0) { |
142 |
ins->x.f.sca = -ins->x.f.sca; |
143 |
ins->x.b.sca = -ins->x.b.sca; |
144 |
} |
145 |
ins->obj = NULL; |
146 |
o->os = (char *)ins; |
147 |
} |
148 |
if (ins->obj == NULL || (ins->obj->ldflags & flags) != flags) |
149 |
ins->obj = getscene(o->oargs.sarg[0], flags); |
150 |
return(ins); |
151 |
} |
152 |
|
153 |
|
154 |
void |
155 |
freescene(sc) /* release a scene reference */ |
156 |
SCENE *sc; |
157 |
{ |
158 |
SCENE shead; |
159 |
register SCENE *scp; |
160 |
|
161 |
if (sc == NULL) |
162 |
return; |
163 |
if (sc->nref <= 0) |
164 |
error(CONSISTENCY, "unreferenced scene in freescene"); |
165 |
sc->nref--; |
166 |
if (sc->nref) /* still in use? */ |
167 |
return; |
168 |
shead.next = slist; /* else remove from our list */ |
169 |
for (scp = &shead; scp->next != NULL; scp = scp->next) |
170 |
if (scp->next == sc) { |
171 |
scp->next = sc->next; |
172 |
sc->next = NULL; |
173 |
break; |
174 |
} |
175 |
if (sc->next != NULL) /* can't be in list anymore */ |
176 |
error(CONSISTENCY, "unlisted scene in freescene"); |
177 |
slist = shead.next; |
178 |
freestr(sc->name); /* free memory */ |
179 |
octfree(sc->scube.cutree); |
180 |
freeobjects(sc->firstobj, sc->nobjs); |
181 |
free((void *)sc); |
182 |
} |
183 |
|
184 |
|
185 |
void |
186 |
freeinstance(o) /* free memory associated with instance */ |
187 |
OBJREC *o; |
188 |
{ |
189 |
if (o->os == NULL) |
190 |
return; |
191 |
freescene((*(INSTANCE *)o->os).obj); |
192 |
free(o->os); |
193 |
o->os = NULL; |
194 |
} |