1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.16 |
static const char RCSid[] = "$Id: mesh.c,v 2.15 2003/11/14 17:22:06 schorsch Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
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/* |
5 |
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* Mesh support routines |
6 |
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*/ |
7 |
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8 |
schorsch |
2.9 |
#include <string.h> |
9 |
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10 |
schorsch |
2.15 |
#include "rtio.h" |
11 |
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#include "rtmath.h" |
12 |
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#include "rterror.h" |
13 |
greg |
2.1 |
#include "octree.h" |
14 |
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#include "object.h" |
15 |
greg |
2.4 |
#include "otypes.h" |
16 |
greg |
2.1 |
#include "mesh.h" |
17 |
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18 |
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/* An encoded mesh vertex */ |
19 |
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typedef struct { |
20 |
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int fl; |
21 |
greg |
2.8 |
uint32 xyz[3]; |
22 |
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int32 norm; |
23 |
greg |
2.16 |
uint32 uv[2]; |
24 |
greg |
2.1 |
} MCVERT; |
25 |
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26 |
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#define MPATCHBLKSIZ 128 /* patch allocation block size */ |
27 |
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28 |
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#define IO_LEGAL (IO_BOUNDS|IO_TREE|IO_SCENE) |
29 |
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30 |
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static MESH *mlist = NULL; /* list of loaded meshes */ |
31 |
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32 |
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33 |
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static unsigned long |
34 |
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cvhash(cvp) /* hash an encoded vertex */ |
35 |
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MCVERT *cvp; |
36 |
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{ |
37 |
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unsigned long hval; |
38 |
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39 |
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if (!(cvp->fl & MT_V)) |
40 |
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return(0); |
41 |
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hval = cvp->xyz[0] ^ cvp->xyz[1] << 11 ^ cvp->xyz[2] << 22; |
42 |
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if (cvp->fl & MT_N) |
43 |
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hval ^= cvp->norm; |
44 |
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if (cvp->fl & MT_UV) |
45 |
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hval ^= cvp->uv[0] ^ cvp->uv[1] << 16; |
46 |
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return(hval); |
47 |
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} |
48 |
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49 |
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50 |
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static int |
51 |
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cvcmp(v1, v2) /* compare encoded vertices */ |
52 |
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register MCVERT *v1, *v2; |
53 |
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{ |
54 |
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if (v1->fl != v2->fl) |
55 |
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return(1); |
56 |
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if (v1->xyz[0] != v2->xyz[0]) |
57 |
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return(1); |
58 |
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if (v1->xyz[1] != v2->xyz[1]) |
59 |
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return(1); |
60 |
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if (v1->xyz[2] != v2->xyz[2]) |
61 |
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return(1); |
62 |
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if (v1->fl & MT_N && v1->norm != v2->norm) |
63 |
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return(1); |
64 |
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if (v1->fl & MT_UV) { |
65 |
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if (v1->uv[0] != v2->uv[0]) |
66 |
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return(1); |
67 |
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if (v1->uv[1] != v2->uv[1]) |
68 |
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return(1); |
69 |
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} |
70 |
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return(0); |
71 |
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} |
72 |
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73 |
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74 |
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MESH * |
75 |
greg |
2.10 |
getmesh(mname, flags) /* get new mesh data reference */ |
76 |
greg |
2.1 |
char *mname; |
77 |
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int flags; |
78 |
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{ |
79 |
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char *pathname; |
80 |
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register MESH *ms; |
81 |
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82 |
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flags &= IO_LEGAL; |
83 |
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for (ms = mlist; ms != NULL; ms = ms->next) |
84 |
greg |
2.11 |
if (!strcmp(mname, ms->name)) { |
85 |
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ms->nref++; /* increase reference count */ |
86 |
greg |
2.10 |
break; |
87 |
greg |
2.11 |
} |
88 |
greg |
2.10 |
if (ms == NULL) { /* load first time */ |
89 |
greg |
2.1 |
ms = (MESH *)calloc(1, sizeof(MESH)); |
90 |
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if (ms == NULL) |
91 |
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error(SYSTEM, "out of memory in getmesh"); |
92 |
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ms->name = savestr(mname); |
93 |
greg |
2.11 |
ms->nref = 1; |
94 |
greg |
2.1 |
ms->mcube.cutree = EMPTY; |
95 |
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ms->next = mlist; |
96 |
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mlist = ms; |
97 |
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} |
98 |
greg |
2.7 |
if ((pathname = getpath(mname, getrlibpath(), R_OK)) == NULL) { |
99 |
greg |
2.1 |
sprintf(errmsg, "cannot find mesh file \"%s\"", mname); |
100 |
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error(USER, errmsg); |
101 |
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} |
102 |
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flags &= ~ms->ldflags; |
103 |
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if (flags) |
104 |
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readmesh(ms, pathname, flags); |
105 |
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return(ms); |
106 |
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} |
107 |
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108 |
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109 |
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MESHINST * |
110 |
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getmeshinst(o, flags) /* create mesh instance */ |
111 |
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OBJREC *o; |
112 |
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int flags; |
113 |
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{ |
114 |
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register MESHINST *ins; |
115 |
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116 |
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flags &= IO_LEGAL; |
117 |
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if ((ins = (MESHINST *)o->os) == NULL) { |
118 |
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if ((ins = (MESHINST *)malloc(sizeof(MESHINST))) == NULL) |
119 |
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error(SYSTEM, "out of memory in getmeshinst"); |
120 |
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if (o->oargs.nsargs < 1) |
121 |
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objerror(o, USER, "bad # of arguments"); |
122 |
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if (fullxf(&ins->x, o->oargs.nsargs-1, |
123 |
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o->oargs.sarg+1) != o->oargs.nsargs-1) |
124 |
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objerror(o, USER, "bad transform"); |
125 |
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if (ins->x.f.sca < 0.0) { |
126 |
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ins->x.f.sca = -ins->x.f.sca; |
127 |
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ins->x.b.sca = -ins->x.b.sca; |
128 |
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} |
129 |
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ins->msh = NULL; |
130 |
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o->os = (char *)ins; |
131 |
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} |
132 |
greg |
2.10 |
if (ins->msh == NULL) |
133 |
greg |
2.1 |
ins->msh = getmesh(o->oargs.sarg[0], flags); |
134 |
greg |
2.10 |
else if ((flags &= ~ins->msh->ldflags)) |
135 |
|
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readmesh(ins->msh, |
136 |
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getpath(o->oargs.sarg[0], getrlibpath(), R_OK), |
137 |
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flags); |
138 |
greg |
2.1 |
return(ins); |
139 |
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} |
140 |
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141 |
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|
142 |
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int |
143 |
greg |
2.4 |
getmeshtrivid(tvid, mo, mp, ti) /* get triangle vertex ID's */ |
144 |
greg |
2.8 |
int32 tvid[3]; |
145 |
greg |
2.4 |
OBJECT *mo; |
146 |
|
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MESH *mp; |
147 |
|
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OBJECT ti; |
148 |
greg |
2.1 |
{ |
149 |
|
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int pn = ti >> 10; |
150 |
greg |
2.4 |
MESHPATCH *pp; |
151 |
greg |
2.1 |
|
152 |
|
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if (pn >= mp->npatches) |
153 |
|
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return(0); |
154 |
greg |
2.4 |
pp = &mp->patch[pn]; |
155 |
greg |
2.1 |
ti &= 0x3ff; |
156 |
|
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if (!(ti & 0x200)) { /* local triangle */ |
157 |
|
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struct PTri *tp; |
158 |
greg |
2.4 |
if (ti >= pp->ntris) |
159 |
greg |
2.1 |
return(0); |
160 |
greg |
2.4 |
tp = &pp->tri[ti]; |
161 |
greg |
2.1 |
tvid[0] = tvid[1] = tvid[2] = pn << 8; |
162 |
|
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tvid[0] |= tp->v1; |
163 |
|
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tvid[1] |= tp->v2; |
164 |
|
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tvid[2] |= tp->v3; |
165 |
greg |
2.4 |
if (pp->trimat != NULL) |
166 |
|
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*mo = pp->trimat[ti]; |
167 |
|
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else |
168 |
|
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*mo = pp->solemat; |
169 |
|
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if (*mo != OVOID) |
170 |
|
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*mo += mp->mat0; |
171 |
greg |
2.1 |
return(1); |
172 |
|
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} |
173 |
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ti &= ~0x200; |
174 |
|
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if (!(ti & 0x100)) { /* single link vertex */ |
175 |
|
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struct PJoin1 *tp1; |
176 |
greg |
2.4 |
if (ti >= pp->nj1tris) |
177 |
greg |
2.1 |
return(0); |
178 |
greg |
2.4 |
tp1 = &pp->j1tri[ti]; |
179 |
greg |
2.1 |
tvid[0] = tp1->v1j; |
180 |
|
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tvid[1] = tvid[2] = pn << 8; |
181 |
|
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tvid[1] |= tp1->v2; |
182 |
|
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tvid[2] |= tp1->v3; |
183 |
greg |
2.4 |
if ((*mo = tp1->mat) != OVOID) |
184 |
|
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*mo += mp->mat0; |
185 |
greg |
2.1 |
return(1); |
186 |
|
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} |
187 |
|
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ti &= ~0x100; |
188 |
|
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{ /* double link vertex */ |
189 |
|
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struct PJoin2 *tp2; |
190 |
greg |
2.4 |
if (ti >= pp->nj2tris) |
191 |
greg |
2.1 |
return(0); |
192 |
greg |
2.4 |
tp2 = &pp->j2tri[ti]; |
193 |
greg |
2.1 |
tvid[0] = tp2->v1j; |
194 |
|
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tvid[1] = tp2->v2j; |
195 |
|
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tvid[2] = pn << 8 | tp2->v3; |
196 |
greg |
2.4 |
if ((*mo = tp2->mat) != OVOID) |
197 |
|
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*mo += mp->mat0; |
198 |
greg |
2.1 |
} |
199 |
|
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return(1); |
200 |
|
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} |
201 |
|
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|
202 |
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|
203 |
|
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int |
204 |
|
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getmeshvert(vp, mp, vid, what) /* get triangle vertex from ID */ |
205 |
greg |
2.6 |
MESHVERT *vp; |
206 |
|
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MESH *mp; |
207 |
greg |
2.8 |
int32 vid; |
208 |
greg |
2.6 |
int what; |
209 |
greg |
2.1 |
{ |
210 |
|
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int pn = vid >> 8; |
211 |
|
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MESHPATCH *pp; |
212 |
|
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double vres; |
213 |
|
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register int i; |
214 |
|
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|
215 |
|
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vp->fl = 0; |
216 |
|
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if (pn >= mp->npatches) |
217 |
|
|
return(0); |
218 |
|
|
pp = &mp->patch[pn]; |
219 |
|
|
vid &= 0xff; |
220 |
|
|
if (vid >= pp->nverts) |
221 |
|
|
return(0); |
222 |
|
|
/* get location */ |
223 |
|
|
if (what & MT_V) { |
224 |
|
|
vres = (1./4294967296.)*mp->mcube.cusize; |
225 |
|
|
for (i = 0; i < 3; i++) |
226 |
|
|
vp->v[i] = mp->mcube.cuorg[i] + |
227 |
|
|
(pp->xyz[vid][i] + .5)*vres; |
228 |
|
|
vp->fl |= MT_V; |
229 |
|
|
} |
230 |
|
|
/* get normal */ |
231 |
|
|
if (what & MT_N && pp->norm != NULL && pp->norm[vid]) { |
232 |
|
|
decodedir(vp->n, pp->norm[vid]); |
233 |
|
|
vp->fl |= MT_N; |
234 |
|
|
} |
235 |
|
|
/* get (u,v) */ |
236 |
|
|
if (what & MT_UV && pp->uv != NULL && pp->uv[vid][0]) { |
237 |
|
|
for (i = 0; i < 2; i++) |
238 |
greg |
2.2 |
vp->uv[i] = mp->uvlim[0][i] + |
239 |
|
|
(mp->uvlim[1][i] - mp->uvlim[0][i])* |
240 |
greg |
2.16 |
(pp->uv[vid][i] + .5)*(1./4294967296.); |
241 |
greg |
2.1 |
vp->fl |= MT_UV; |
242 |
|
|
} |
243 |
|
|
return(vp->fl); |
244 |
|
|
} |
245 |
|
|
|
246 |
|
|
|
247 |
greg |
2.4 |
OBJREC * |
248 |
|
|
getmeshpseudo(mp, mo) /* get mesh pseudo object for material */ |
249 |
|
|
MESH *mp; |
250 |
|
|
OBJECT mo; |
251 |
|
|
{ |
252 |
|
|
if (mo < mp->mat0 || mo >= mp->mat0 + mp->nmats) |
253 |
|
|
error(INTERNAL, "modifier out of range in getmeshpseudo"); |
254 |
|
|
if (mp->pseudo == NULL) { |
255 |
|
|
register int i; |
256 |
|
|
mp->pseudo = (OBJREC *)calloc(mp->nmats, sizeof(OBJREC)); |
257 |
|
|
if (mp->pseudo == NULL) |
258 |
|
|
error(SYSTEM, "out of memory in getmeshpseudo"); |
259 |
|
|
for (i = mp->nmats; i--; ) { |
260 |
|
|
mp->pseudo[i].omod = mp->mat0 + i; |
261 |
|
|
mp->pseudo[i].otype = OBJ_FACE; |
262 |
|
|
mp->pseudo[i].oname = "M-Tri"; |
263 |
|
|
} |
264 |
|
|
} |
265 |
|
|
return(&mp->pseudo[mo - mp->mat0]); |
266 |
|
|
} |
267 |
|
|
|
268 |
|
|
|
269 |
greg |
2.1 |
int |
270 |
greg |
2.4 |
getmeshtri(tv, mo, mp, ti, wha) /* get triangle vertices */ |
271 |
greg |
2.1 |
MESHVERT tv[3]; |
272 |
greg |
2.4 |
OBJECT *mo; |
273 |
greg |
2.1 |
MESH *mp; |
274 |
|
|
OBJECT ti; |
275 |
greg |
2.4 |
int wha; |
276 |
greg |
2.1 |
{ |
277 |
greg |
2.8 |
int32 tvid[3]; |
278 |
greg |
2.1 |
|
279 |
greg |
2.4 |
if (!getmeshtrivid(tvid, mo, mp, ti)) |
280 |
greg |
2.1 |
return(0); |
281 |
|
|
|
282 |
greg |
2.4 |
getmeshvert(&tv[0], mp, tvid[0], wha); |
283 |
|
|
getmeshvert(&tv[1], mp, tvid[1], wha); |
284 |
|
|
getmeshvert(&tv[2], mp, tvid[2], wha); |
285 |
greg |
2.1 |
|
286 |
|
|
return(tv[0].fl & tv[1].fl & tv[2].fl); |
287 |
|
|
} |
288 |
|
|
|
289 |
|
|
|
290 |
greg |
2.8 |
int32 |
291 |
greg |
2.1 |
addmeshvert(mp, vp) /* find/add a mesh vertex */ |
292 |
|
|
register MESH *mp; |
293 |
|
|
MESHVERT *vp; |
294 |
|
|
{ |
295 |
|
|
LUENT *lvp; |
296 |
|
|
MCVERT cv; |
297 |
|
|
register int i; |
298 |
|
|
|
299 |
|
|
if (!(vp->fl & MT_V)) |
300 |
|
|
return(-1); |
301 |
|
|
/* encode vertex */ |
302 |
|
|
for (i = 0; i < 3; i++) { |
303 |
|
|
if (vp->v[i] < mp->mcube.cuorg[i]) |
304 |
|
|
return(-1); |
305 |
|
|
if (vp->v[i] >= mp->mcube.cuorg[i] + mp->mcube.cusize) |
306 |
|
|
return(-1); |
307 |
greg |
2.8 |
cv.xyz[i] = (uint32)(4294967296. * |
308 |
greg |
2.1 |
(vp->v[i] - mp->mcube.cuorg[i]) / |
309 |
|
|
mp->mcube.cusize); |
310 |
|
|
} |
311 |
greg |
2.16 |
if (vp->fl & MT_N) /* assumes normalized! */ |
312 |
greg |
2.1 |
cv.norm = encodedir(vp->n); |
313 |
|
|
if (vp->fl & MT_UV) |
314 |
|
|
for (i = 0; i < 2; i++) { |
315 |
greg |
2.2 |
if (vp->uv[i] <= mp->uvlim[0][i]) |
316 |
greg |
2.1 |
return(-1); |
317 |
greg |
2.2 |
if (vp->uv[i] >= mp->uvlim[1][i]) |
318 |
greg |
2.1 |
return(-1); |
319 |
greg |
2.16 |
cv.uv[i] = (uint32)(4294967296. * |
320 |
greg |
2.2 |
(vp->uv[i] - mp->uvlim[0][i]) / |
321 |
|
|
(mp->uvlim[1][i] - mp->uvlim[0][i])); |
322 |
greg |
2.1 |
} |
323 |
|
|
cv.fl = vp->fl; |
324 |
greg |
2.4 |
if (mp->lut.tsiz == 0) { |
325 |
|
|
mp->lut.hashf = cvhash; |
326 |
|
|
mp->lut.keycmp = cvcmp; |
327 |
|
|
mp->lut.freek = free; |
328 |
|
|
if (!lu_init(&mp->lut, 50000)) |
329 |
greg |
2.1 |
goto nomem; |
330 |
|
|
} |
331 |
|
|
/* find entry */ |
332 |
greg |
2.4 |
lvp = lu_find(&mp->lut, (char *)&cv); |
333 |
greg |
2.1 |
if (lvp == NULL) |
334 |
|
|
goto nomem; |
335 |
|
|
if (lvp->key == NULL) { |
336 |
greg |
2.8 |
lvp->key = (char *)malloc(sizeof(MCVERT)+sizeof(int32)); |
337 |
schorsch |
2.9 |
memcpy((void *)lvp->key, (void *)&cv, sizeof(MCVERT)); |
338 |
greg |
2.1 |
} |
339 |
|
|
if (lvp->data == NULL) { /* new vertex */ |
340 |
|
|
register MESHPATCH *pp; |
341 |
|
|
if (mp->npatches <= 0) { |
342 |
|
|
mp->patch = (MESHPATCH *)calloc(MPATCHBLKSIZ, |
343 |
|
|
sizeof(MESHPATCH)); |
344 |
|
|
if (mp->patch == NULL) |
345 |
|
|
goto nomem; |
346 |
|
|
mp->npatches = 1; |
347 |
|
|
} else if (mp->patch[mp->npatches-1].nverts >= 256) { |
348 |
|
|
if (mp->npatches % MPATCHBLKSIZ == 0) { |
349 |
|
|
mp->patch = (MESHPATCH *)realloc( |
350 |
|
|
(void *)mp->patch, |
351 |
|
|
(mp->npatches + MPATCHBLKSIZ)* |
352 |
|
|
sizeof(MESHPATCH)); |
353 |
schorsch |
2.9 |
memset((void *)(mp->patch + mp->npatches), '\0', |
354 |
greg |
2.1 |
MPATCHBLKSIZ*sizeof(MESHPATCH)); |
355 |
|
|
} |
356 |
greg |
2.2 |
if (mp->npatches++ >= 1L<<22) |
357 |
greg |
2.1 |
error(INTERNAL, "too many mesh patches"); |
358 |
|
|
} |
359 |
|
|
pp = &mp->patch[mp->npatches-1]; |
360 |
|
|
if (pp->xyz == NULL) { |
361 |
greg |
2.8 |
pp->xyz = (uint32 (*)[3])calloc(256, 3*sizeof(int32)); |
362 |
greg |
2.1 |
if (pp->xyz == NULL) |
363 |
|
|
goto nomem; |
364 |
|
|
} |
365 |
|
|
for (i = 0; i < 3; i++) |
366 |
|
|
pp->xyz[pp->nverts][i] = cv.xyz[i]; |
367 |
|
|
if (cv.fl & MT_N) { |
368 |
|
|
if (pp->norm == NULL) { |
369 |
greg |
2.8 |
pp->norm = (int32 *)calloc(256, sizeof(int32)); |
370 |
greg |
2.1 |
if (pp->norm == NULL) |
371 |
|
|
goto nomem; |
372 |
|
|
} |
373 |
|
|
pp->norm[pp->nverts] = cv.norm; |
374 |
|
|
} |
375 |
|
|
if (cv.fl & MT_UV) { |
376 |
|
|
if (pp->uv == NULL) { |
377 |
greg |
2.16 |
pp->uv = (uint32 (*)[2])calloc(256, |
378 |
|
|
2*sizeof(uint32)); |
379 |
greg |
2.1 |
if (pp->uv == NULL) |
380 |
|
|
goto nomem; |
381 |
|
|
} |
382 |
|
|
for (i = 0; i < 2; i++) |
383 |
|
|
pp->uv[pp->nverts][i] = cv.uv[i]; |
384 |
|
|
} |
385 |
|
|
pp->nverts++; |
386 |
|
|
lvp->data = lvp->key + sizeof(MCVERT); |
387 |
greg |
2.8 |
*(int32 *)lvp->data = (mp->npatches-1) << 8 | (pp->nverts-1); |
388 |
greg |
2.1 |
} |
389 |
greg |
2.8 |
return(*(int32 *)lvp->data); |
390 |
greg |
2.1 |
nomem: |
391 |
|
|
error(SYSTEM, "out of memory in addmeshvert"); |
392 |
|
|
return(-1); |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
|
396 |
|
|
OBJECT |
397 |
greg |
2.4 |
addmeshtri(mp, tv, mo) /* add a new mesh triangle */ |
398 |
greg |
2.1 |
MESH *mp; |
399 |
|
|
MESHVERT tv[3]; |
400 |
greg |
2.4 |
OBJECT mo; |
401 |
greg |
2.1 |
{ |
402 |
greg |
2.8 |
int32 vid[3], t; |
403 |
greg |
2.1 |
int pn[3], i; |
404 |
|
|
register MESHPATCH *pp; |
405 |
|
|
|
406 |
|
|
if (!(tv[0].fl & tv[1].fl & tv[2].fl & MT_V)) |
407 |
|
|
return(OVOID); |
408 |
|
|
/* find/allocate patch vertices */ |
409 |
|
|
for (i = 0; i < 3; i++) { |
410 |
|
|
if ((vid[i] = addmeshvert(mp, &tv[i])) < 0) |
411 |
|
|
return(OVOID); |
412 |
|
|
pn[i] = vid[i] >> 8; |
413 |
|
|
} |
414 |
greg |
2.4 |
/* normalize material index */ |
415 |
schorsch |
2.13 |
if (mo != OVOID) { |
416 |
greg |
2.4 |
if ((mo -= mp->mat0) >= mp->nmats) |
417 |
|
|
mp->nmats = mo+1; |
418 |
|
|
else if (mo < 0) |
419 |
|
|
error(INTERNAL, "modifier range error in addmeshtri"); |
420 |
schorsch |
2.13 |
} |
421 |
greg |
2.1 |
/* assign triangle */ |
422 |
|
|
if (pn[0] == pn[1] && pn[1] == pn[2]) { /* local case */ |
423 |
|
|
pp = &mp->patch[pn[0]]; |
424 |
|
|
if (pp->tri == NULL) { |
425 |
|
|
pp->tri = (struct PTri *)malloc( |
426 |
|
|
512*sizeof(struct PTri)); |
427 |
|
|
if (pp->tri == NULL) |
428 |
|
|
goto nomem; |
429 |
|
|
} |
430 |
greg |
2.2 |
if (pp->ntris < 512) { |
431 |
|
|
pp->tri[pp->ntris].v1 = vid[0] & 0xff; |
432 |
|
|
pp->tri[pp->ntris].v2 = vid[1] & 0xff; |
433 |
|
|
pp->tri[pp->ntris].v3 = vid[2] & 0xff; |
434 |
greg |
2.4 |
if (pp->ntris == 0) |
435 |
|
|
pp->solemat = mo; |
436 |
|
|
else if (pp->trimat == NULL && mo != pp->solemat) { |
437 |
greg |
2.8 |
pp->trimat = (int16 *)malloc( |
438 |
|
|
512*sizeof(int16)); |
439 |
greg |
2.4 |
if (pp->trimat == NULL) |
440 |
|
|
goto nomem; |
441 |
|
|
for (i = pp->ntris; i--; ) |
442 |
|
|
pp->trimat[i] = pp->solemat; |
443 |
|
|
} |
444 |
|
|
if (pp->trimat != NULL) |
445 |
|
|
pp->trimat[pp->ntris] = mo; |
446 |
greg |
2.2 |
return(pn[0] << 10 | pp->ntris++); |
447 |
|
|
} |
448 |
greg |
2.1 |
} |
449 |
|
|
if (pn[0] == pn[1]) { |
450 |
greg |
2.2 |
t = vid[2]; vid[2] = vid[1]; vid[1] = vid[0]; vid[0] = t; |
451 |
|
|
i = pn[2]; pn[2] = pn[1]; pn[1] = pn[0]; pn[0] = i; |
452 |
greg |
2.1 |
} else if (pn[0] == pn[2]) { |
453 |
greg |
2.2 |
t = vid[0]; vid[0] = vid[1]; vid[1] = vid[2]; vid[2] = t; |
454 |
|
|
i = pn[0]; pn[0] = pn[1]; pn[1] = pn[2]; pn[2] = i; |
455 |
greg |
2.1 |
} |
456 |
|
|
if (pn[1] == pn[2]) { /* single link */ |
457 |
|
|
pp = &mp->patch[pn[1]]; |
458 |
|
|
if (pp->j1tri == NULL) { |
459 |
|
|
pp->j1tri = (struct PJoin1 *)malloc( |
460 |
|
|
256*sizeof(struct PJoin1)); |
461 |
|
|
if (pp->j1tri == NULL) |
462 |
|
|
goto nomem; |
463 |
|
|
} |
464 |
greg |
2.2 |
if (pp->nj1tris < 256) { |
465 |
|
|
pp->j1tri[pp->nj1tris].v1j = vid[0]; |
466 |
|
|
pp->j1tri[pp->nj1tris].v2 = vid[1] & 0xff; |
467 |
|
|
pp->j1tri[pp->nj1tris].v3 = vid[2] & 0xff; |
468 |
greg |
2.4 |
pp->j1tri[pp->nj1tris].mat = mo; |
469 |
greg |
2.2 |
return(pn[1] << 10 | 0x200 | pp->nj1tris++); |
470 |
|
|
} |
471 |
greg |
2.1 |
} |
472 |
|
|
/* double link */ |
473 |
|
|
pp = &mp->patch[pn[2]]; |
474 |
|
|
if (pp->j2tri == NULL) { |
475 |
|
|
pp->j2tri = (struct PJoin2 *)malloc( |
476 |
|
|
256*sizeof(struct PJoin2)); |
477 |
|
|
if (pp->j2tri == NULL) |
478 |
|
|
goto nomem; |
479 |
|
|
} |
480 |
|
|
if (pp->nj2tris >= 256) |
481 |
greg |
2.2 |
error(INTERNAL, "too many patch triangles in addmeshtri"); |
482 |
|
|
pp->j2tri[pp->nj2tris].v1j = vid[0]; |
483 |
|
|
pp->j2tri[pp->nj2tris].v2j = vid[1]; |
484 |
greg |
2.1 |
pp->j2tri[pp->nj2tris].v3 = vid[2] & 0xff; |
485 |
greg |
2.4 |
pp->j2tri[pp->nj2tris].mat = mo; |
486 |
greg |
2.1 |
return(pn[2] << 10 | 0x300 | pp->nj2tris++); |
487 |
|
|
nomem: |
488 |
|
|
error(SYSTEM, "out of memory in addmeshtri"); |
489 |
|
|
return(OVOID); |
490 |
|
|
} |
491 |
|
|
|
492 |
|
|
|
493 |
greg |
2.4 |
char * |
494 |
|
|
checkmesh(mp) /* validate mesh data */ |
495 |
|
|
register MESH *mp; |
496 |
|
|
{ |
497 |
|
|
static char embuf[128]; |
498 |
|
|
int nouvbounds = 1; |
499 |
|
|
register int i; |
500 |
|
|
/* basic checks */ |
501 |
|
|
if (mp == NULL) |
502 |
|
|
return("NULL mesh pointer"); |
503 |
|
|
if (!mp->ldflags) |
504 |
|
|
return("unassigned mesh"); |
505 |
|
|
if (mp->name == NULL) |
506 |
|
|
return("missing mesh name"); |
507 |
|
|
if (mp->nref <= 0) |
508 |
|
|
return("unreferenced mesh"); |
509 |
|
|
/* check boundaries */ |
510 |
|
|
if (mp->ldflags & IO_BOUNDS) { |
511 |
|
|
if (mp->mcube.cusize <= FTINY) |
512 |
|
|
return("illegal octree bounds in mesh"); |
513 |
greg |
2.5 |
nouvbounds = (mp->uvlim[1][0] - mp->uvlim[0][0] <= FTINY || |
514 |
|
|
mp->uvlim[1][1] - mp->uvlim[0][1] <= FTINY); |
515 |
greg |
2.4 |
} |
516 |
|
|
/* check octree */ |
517 |
|
|
if (mp->ldflags & IO_TREE) { |
518 |
|
|
if (isempty(mp->mcube.cutree)) |
519 |
|
|
error(WARNING, "empty mesh octree"); |
520 |
|
|
} |
521 |
|
|
/* check scene data */ |
522 |
|
|
if (mp->ldflags & IO_SCENE) { |
523 |
|
|
if (!(mp->ldflags & IO_BOUNDS)) |
524 |
|
|
return("unbounded scene in mesh"); |
525 |
|
|
if (mp->mat0 < 0 || mp->mat0+mp->nmats > nobjects) |
526 |
|
|
return("bad mesh modifier range"); |
527 |
|
|
for (i = mp->mat0+mp->nmats; i-- > mp->mat0; ) { |
528 |
|
|
int otyp = objptr(i)->otype; |
529 |
|
|
if (!ismodifier(otyp)) { |
530 |
|
|
sprintf(embuf, |
531 |
|
|
"non-modifier in mesh (%s \"%s\")", |
532 |
|
|
ofun[otyp].funame, objptr(i)->oname); |
533 |
|
|
return(embuf); |
534 |
|
|
} |
535 |
|
|
} |
536 |
|
|
if (mp->npatches <= 0) |
537 |
|
|
error(WARNING, "no patches in mesh"); |
538 |
|
|
for (i = 0; i < mp->npatches; i++) { |
539 |
|
|
register MESHPATCH *pp = &mp->patch[i]; |
540 |
|
|
if (pp->nverts <= 0) |
541 |
|
|
error(WARNING, "no vertices in patch"); |
542 |
|
|
else { |
543 |
|
|
if (pp->xyz == NULL) |
544 |
|
|
return("missing patch vertex list"); |
545 |
|
|
if (nouvbounds && pp->uv != NULL) |
546 |
|
|
return("unreferenced uv coordinates"); |
547 |
|
|
} |
548 |
|
|
if (pp->ntris + pp->nj1tris + pp->nj2tris <= 0) |
549 |
|
|
error(WARNING, "no triangles in patch"); |
550 |
|
|
if (pp->ntris > 0 && pp->tri == NULL) |
551 |
|
|
return("missing patch triangle list"); |
552 |
|
|
if (pp->nj1tris > 0 && pp->j1tri == NULL) |
553 |
|
|
return("missing patch joiner triangle list"); |
554 |
|
|
if (pp->nj2tris > 0 && pp->j2tri == NULL) |
555 |
|
|
return("missing patch double-joiner list"); |
556 |
|
|
} |
557 |
|
|
} |
558 |
|
|
return(NULL); /* seems OK */ |
559 |
|
|
} |
560 |
|
|
|
561 |
|
|
|
562 |
greg |
2.1 |
static void |
563 |
|
|
tallyoctree(ot, ecp, lcp, ocp) /* tally octree size */ |
564 |
|
|
OCTREE ot; |
565 |
|
|
int *ecp, *lcp, *ocp; |
566 |
|
|
{ |
567 |
|
|
int i; |
568 |
|
|
|
569 |
|
|
if (isempty(ot)) { |
570 |
|
|
(*ecp)++; |
571 |
|
|
return; |
572 |
|
|
} |
573 |
|
|
if (isfull(ot)) { |
574 |
|
|
OBJECT oset[MAXSET+1]; |
575 |
|
|
(*lcp)++; |
576 |
|
|
objset(oset, ot); |
577 |
|
|
*ocp += oset[0]; |
578 |
|
|
return; |
579 |
|
|
} |
580 |
|
|
for (i = 0; i < 8; i++) |
581 |
|
|
tallyoctree(octkid(ot, i), ecp, lcp, ocp); |
582 |
|
|
} |
583 |
|
|
|
584 |
|
|
|
585 |
|
|
void |
586 |
|
|
printmeshstats(ms, fp) /* print out mesh statistics */ |
587 |
|
|
MESH *ms; |
588 |
|
|
FILE *fp; |
589 |
|
|
{ |
590 |
|
|
int lfcnt=0, lecnt=0, locnt=0; |
591 |
|
|
int vcnt=0, ncnt=0, uvcnt=0; |
592 |
|
|
int nscnt=0, uvscnt=0; |
593 |
|
|
int tcnt=0, t1cnt=0, t2cnt=0; |
594 |
|
|
int i, j; |
595 |
|
|
|
596 |
|
|
tallyoctree(ms->mcube.cutree, &lecnt, &lfcnt, &locnt); |
597 |
|
|
for (i = 0; i < ms->npatches; i++) { |
598 |
|
|
register MESHPATCH *pp = &ms->patch[i]; |
599 |
|
|
vcnt += pp->nverts; |
600 |
|
|
if (pp->norm != NULL) { |
601 |
|
|
for (j = pp->nverts; j--; ) |
602 |
|
|
if (pp->norm[j]) |
603 |
|
|
ncnt++; |
604 |
|
|
nscnt += pp->nverts; |
605 |
|
|
} |
606 |
|
|
if (pp->uv != NULL) { |
607 |
|
|
for (j = pp->nverts; j--; ) |
608 |
|
|
if (pp->uv[j][0]) |
609 |
|
|
uvcnt++; |
610 |
|
|
uvscnt += pp->nverts; |
611 |
|
|
} |
612 |
|
|
tcnt += pp->ntris; |
613 |
|
|
t1cnt += pp->nj1tris; |
614 |
|
|
t2cnt += pp->nj2tris; |
615 |
|
|
} |
616 |
|
|
fprintf(fp, "Mesh statistics:\n"); |
617 |
schorsch |
2.12 |
fprintf(fp, "\t%ld materials\n", ms->nmats); |
618 |
greg |
2.1 |
fprintf(fp, "\t%d patches (%.2f MBytes)\n", ms->npatches, |
619 |
|
|
(ms->npatches*sizeof(MESHPATCH) + |
620 |
greg |
2.8 |
vcnt*3*sizeof(uint32) + |
621 |
|
|
nscnt*sizeof(int32) + |
622 |
greg |
2.16 |
uvscnt*2*sizeof(uint32) + |
623 |
greg |
2.1 |
tcnt*sizeof(struct PTri) + |
624 |
|
|
t1cnt*sizeof(struct PJoin1) + |
625 |
|
|
t2cnt*sizeof(struct PJoin2))/(1024.*1024.)); |
626 |
|
|
fprintf(fp, "\t%d vertices (%.1f%% w/ normals, %.1f%% w/ uv)\n", |
627 |
|
|
vcnt, 100.*ncnt/vcnt, 100.*uvcnt/vcnt); |
628 |
|
|
fprintf(fp, "\t%d triangles (%.1f%% local, %.1f%% joiner)\n", |
629 |
|
|
tcnt+t1cnt+t2cnt, |
630 |
|
|
100.*tcnt/(tcnt+t1cnt+t2cnt), |
631 |
|
|
100.*t1cnt/(tcnt+t1cnt+t2cnt)); |
632 |
|
|
fprintf(fp, |
633 |
|
|
"\t%d leaves in octree (%.1f%% empty, %.2f avg. set size)\n", |
634 |
|
|
lfcnt+lecnt, 100.*lecnt/(lfcnt+lecnt), |
635 |
|
|
(double)locnt/lfcnt); |
636 |
|
|
} |
637 |
|
|
|
638 |
|
|
|
639 |
|
|
void |
640 |
|
|
freemesh(ms) /* free mesh data */ |
641 |
greg |
2.4 |
register MESH *ms; |
642 |
greg |
2.1 |
{ |
643 |
|
|
MESH mhead; |
644 |
|
|
MESH *msp; |
645 |
|
|
|
646 |
|
|
if (ms == NULL) |
647 |
|
|
return; |
648 |
|
|
if (ms->nref <= 0) |
649 |
|
|
error(CONSISTENCY, "unreferenced mesh in freemesh"); |
650 |
|
|
ms->nref--; |
651 |
|
|
if (ms->nref) /* still in use */ |
652 |
|
|
return; |
653 |
|
|
/* else remove from list */ |
654 |
|
|
mhead.next = mlist; |
655 |
|
|
for (msp = &mhead; msp->next != NULL; msp = msp->next) |
656 |
|
|
if (msp->next == ms) { |
657 |
|
|
msp->next = ms->next; |
658 |
|
|
ms->next = NULL; |
659 |
|
|
break; |
660 |
|
|
} |
661 |
|
|
if (ms->next != NULL) /* can't be in list anymore */ |
662 |
|
|
error(CONSISTENCY, "unlisted mesh in freemesh"); |
663 |
|
|
mlist = mhead.next; |
664 |
|
|
/* free mesh data */ |
665 |
|
|
freestr(ms->name); |
666 |
|
|
octfree(ms->mcube.cutree); |
667 |
greg |
2.4 |
lu_done(&ms->lut); |
668 |
greg |
2.1 |
if (ms->npatches > 0) { |
669 |
|
|
register MESHPATCH *pp = ms->patch + ms->npatches; |
670 |
|
|
while (pp-- > ms->patch) { |
671 |
|
|
if (pp->j2tri != NULL) |
672 |
|
|
free((void *)pp->j2tri); |
673 |
|
|
if (pp->j1tri != NULL) |
674 |
|
|
free((void *)pp->j1tri); |
675 |
|
|
if (pp->tri != NULL) |
676 |
|
|
free((void *)pp->tri); |
677 |
|
|
if (pp->uv != NULL) |
678 |
|
|
free((void *)pp->uv); |
679 |
|
|
if (pp->norm != NULL) |
680 |
|
|
free((void *)pp->norm); |
681 |
|
|
if (pp->xyz != NULL) |
682 |
|
|
free((void *)pp->xyz); |
683 |
|
|
} |
684 |
|
|
free((void *)ms->patch); |
685 |
|
|
} |
686 |
greg |
2.4 |
if (ms->pseudo != NULL) |
687 |
|
|
free((void *)ms->pseudo); |
688 |
greg |
2.1 |
free((void *)ms); |
689 |
|
|
} |
690 |
|
|
|
691 |
|
|
|
692 |
|
|
void |
693 |
|
|
freemeshinst(o) /* free mesh instance */ |
694 |
|
|
OBJREC *o; |
695 |
|
|
{ |
696 |
|
|
if (o->os == NULL) |
697 |
|
|
return; |
698 |
|
|
freemesh((*(MESHINST *)o->os).msh); |
699 |
|
|
free((void *)o->os); |
700 |
|
|
o->os = NULL; |
701 |
|
|
} |