| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: mesh.c,v 2.17 2004/02/12 18:55:50 greg Exp $";
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| 3 |
#endif
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| 4 |
/*
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| 5 |
* Mesh support routines
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| 6 |
*/
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| 7 |
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| 8 |
#include <string.h>
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| 9 |
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| 10 |
#include "rtio.h"
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| 11 |
#include "rtmath.h"
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| 12 |
#include "rterror.h"
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| 13 |
#include "paths.h"
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| 14 |
#include "octree.h"
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| 15 |
#include "object.h"
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| 16 |
#include "otypes.h"
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#include "mesh.h"
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| 18 |
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| 19 |
/* An encoded mesh vertex */
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| 20 |
typedef struct {
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| 21 |
int fl;
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| 22 |
uint32 xyz[3];
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| 23 |
int32 norm;
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| 24 |
uint32 uv[2];
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| 25 |
} MCVERT;
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| 26 |
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| 27 |
#define MPATCHBLKSIZ 128 /* patch allocation block size */
|
| 28 |
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| 29 |
#define IO_LEGAL (IO_BOUNDS|IO_TREE|IO_SCENE)
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| 30 |
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| 31 |
static MESH *mlist = NULL; /* list of loaded meshes */
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| 32 |
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| 33 |
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| 34 |
static unsigned long
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| 35 |
cvhash(cvp) /* hash an encoded vertex */
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| 36 |
MCVERT *cvp;
|
| 37 |
{
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| 38 |
unsigned long hval;
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| 39 |
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| 40 |
if (!(cvp->fl & MT_V))
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| 41 |
return(0);
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| 42 |
hval = cvp->xyz[0] ^ cvp->xyz[1] << 11 ^ cvp->xyz[2] << 22;
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| 43 |
if (cvp->fl & MT_N)
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| 44 |
hval ^= cvp->norm;
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| 45 |
if (cvp->fl & MT_UV)
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hval ^= cvp->uv[0] ^ cvp->uv[1] << 16;
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| 47 |
return(hval);
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| 48 |
}
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| 49 |
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| 50 |
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| 51 |
static int
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| 52 |
cvcmp(v1, v2) /* compare encoded vertices */
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| 53 |
register MCVERT *v1, *v2;
|
| 54 |
{
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| 55 |
if (v1->fl != v2->fl)
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| 56 |
return(1);
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| 57 |
if (v1->xyz[0] != v2->xyz[0])
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| 58 |
return(1);
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| 59 |
if (v1->xyz[1] != v2->xyz[1])
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| 60 |
return(1);
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| 61 |
if (v1->xyz[2] != v2->xyz[2])
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| 62 |
return(1);
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| 63 |
if (v1->fl & MT_N && v1->norm != v2->norm)
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| 64 |
return(1);
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| 65 |
if (v1->fl & MT_UV) {
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| 66 |
if (v1->uv[0] != v2->uv[0])
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| 67 |
return(1);
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| 68 |
if (v1->uv[1] != v2->uv[1])
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| 69 |
return(1);
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| 70 |
}
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return(0);
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}
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| 74 |
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| 75 |
MESH *
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| 76 |
getmesh(mname, flags) /* get new mesh data reference */
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char *mname;
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| 78 |
int flags;
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{
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| 80 |
char *pathname;
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| 81 |
register MESH *ms;
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| 82 |
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| 83 |
flags &= IO_LEGAL;
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| 84 |
for (ms = mlist; ms != NULL; ms = ms->next)
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| 85 |
if (!strcmp(mname, ms->name)) {
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| 86 |
ms->nref++; /* increase reference count */
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break;
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}
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if (ms == NULL) { /* load first time */
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| 90 |
ms = (MESH *)calloc(1, sizeof(MESH));
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| 91 |
if (ms == NULL)
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| 92 |
error(SYSTEM, "out of memory in getmesh");
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| 93 |
ms->name = savestr(mname);
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ms->nref = 1;
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| 95 |
ms->mcube.cutree = EMPTY;
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| 96 |
ms->next = mlist;
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| 97 |
mlist = ms;
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| 98 |
}
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| 99 |
if ((pathname = getpath(mname, getrlibpath(), R_OK)) == NULL) {
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sprintf(errmsg, "cannot find mesh file \"%s\"", mname);
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error(USER, errmsg);
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}
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flags &= ~ms->ldflags;
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| 104 |
if (flags)
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readmesh(ms, pathname, flags);
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return(ms);
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}
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| 109 |
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MESHINST *
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getmeshinst(o, flags) /* create mesh instance */
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OBJREC *o;
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| 113 |
int flags;
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| 114 |
{
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| 115 |
register MESHINST *ins;
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| 116 |
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| 117 |
flags &= IO_LEGAL;
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| 118 |
if ((ins = (MESHINST *)o->os) == NULL) {
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if ((ins = (MESHINST *)malloc(sizeof(MESHINST))) == NULL)
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error(SYSTEM, "out of memory in getmeshinst");
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| 121 |
if (o->oargs.nsargs < 1)
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| 122 |
objerror(o, USER, "bad # of arguments");
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| 123 |
if (fullxf(&ins->x, o->oargs.nsargs-1,
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| 124 |
o->oargs.sarg+1) != o->oargs.nsargs-1)
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| 125 |
objerror(o, USER, "bad transform");
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| 126 |
if (ins->x.f.sca < 0.0) {
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| 127 |
ins->x.f.sca = -ins->x.f.sca;
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| 128 |
ins->x.b.sca = -ins->x.b.sca;
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| 129 |
}
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| 130 |
ins->msh = NULL;
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| 131 |
o->os = (char *)ins;
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| 132 |
}
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| 133 |
if (ins->msh == NULL)
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ins->msh = getmesh(o->oargs.sarg[0], flags);
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| 135 |
else if ((flags &= ~ins->msh->ldflags))
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readmesh(ins->msh,
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| 137 |
getpath(o->oargs.sarg[0], getrlibpath(), R_OK),
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| 138 |
flags);
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return(ins);
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}
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int
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getmeshtrivid(tvid, mo, mp, ti) /* get triangle vertex ID's */
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| 145 |
int32 tvid[3];
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| 146 |
OBJECT *mo;
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| 147 |
MESH *mp;
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| 148 |
OBJECT ti;
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| 149 |
{
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| 150 |
int pn = ti >> 10;
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| 151 |
MESHPATCH *pp;
|
| 152 |
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| 153 |
if (pn >= mp->npatches)
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| 154 |
return(0);
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| 155 |
pp = &mp->patch[pn];
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| 156 |
ti &= 0x3ff;
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| 157 |
if (!(ti & 0x200)) { /* local triangle */
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| 158 |
struct PTri *tp;
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| 159 |
if (ti >= pp->ntris)
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| 160 |
return(0);
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| 161 |
tp = &pp->tri[ti];
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| 162 |
tvid[0] = tvid[1] = tvid[2] = pn << 8;
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| 163 |
tvid[0] |= tp->v1;
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| 164 |
tvid[1] |= tp->v2;
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| 165 |
tvid[2] |= tp->v3;
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if (pp->trimat != NULL)
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| 167 |
*mo = pp->trimat[ti];
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| 168 |
else
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| 169 |
*mo = pp->solemat;
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| 170 |
if (*mo != OVOID)
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| 171 |
*mo += mp->mat0;
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| 172 |
return(1);
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| 173 |
}
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| 174 |
ti &= ~0x200;
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| 175 |
if (!(ti & 0x100)) { /* single link vertex */
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| 176 |
struct PJoin1 *tp1;
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| 177 |
if (ti >= pp->nj1tris)
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| 178 |
return(0);
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| 179 |
tp1 = &pp->j1tri[ti];
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| 180 |
tvid[0] = tp1->v1j;
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| 181 |
tvid[1] = tvid[2] = pn << 8;
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| 182 |
tvid[1] |= tp1->v2;
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| 183 |
tvid[2] |= tp1->v3;
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| 184 |
if ((*mo = tp1->mat) != OVOID)
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| 185 |
*mo += mp->mat0;
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| 186 |
return(1);
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| 187 |
}
|
| 188 |
ti &= ~0x100;
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| 189 |
{ /* double link vertex */
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| 190 |
struct PJoin2 *tp2;
|
| 191 |
if (ti >= pp->nj2tris)
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| 192 |
return(0);
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| 193 |
tp2 = &pp->j2tri[ti];
|
| 194 |
tvid[0] = tp2->v1j;
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| 195 |
tvid[1] = tp2->v2j;
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| 196 |
tvid[2] = pn << 8 | tp2->v3;
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| 197 |
if ((*mo = tp2->mat) != OVOID)
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| 198 |
*mo += mp->mat0;
|
| 199 |
}
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| 200 |
return(1);
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| 201 |
}
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| 203 |
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int
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getmeshvert(vp, mp, vid, what) /* get triangle vertex from ID */
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| 206 |
MESHVERT *vp;
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| 207 |
MESH *mp;
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| 208 |
int32 vid;
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| 209 |
int what;
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| 210 |
{
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| 211 |
int pn = vid >> 8;
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| 212 |
MESHPATCH *pp;
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| 213 |
double vres;
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| 214 |
register int i;
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| 215 |
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| 216 |
vp->fl = 0;
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| 217 |
if (pn >= mp->npatches)
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| 218 |
return(0);
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| 219 |
pp = &mp->patch[pn];
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| 220 |
vid &= 0xff;
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| 221 |
if (vid >= pp->nverts)
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| 222 |
return(0);
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| 223 |
/* get location */
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| 224 |
if (what & MT_V) {
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| 225 |
vres = (1./4294967296.)*mp->mcube.cusize;
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| 226 |
for (i = 0; i < 3; i++)
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| 227 |
vp->v[i] = mp->mcube.cuorg[i] +
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| 228 |
(pp->xyz[vid][i] + .5)*vres;
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vp->fl |= MT_V;
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| 230 |
}
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| 231 |
/* get normal */
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| 232 |
if (what & MT_N && pp->norm != NULL && pp->norm[vid]) {
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| 233 |
decodedir(vp->n, pp->norm[vid]);
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vp->fl |= MT_N;
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}
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| 236 |
/* get (u,v) */
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| 237 |
if (what & MT_UV && pp->uv != NULL && pp->uv[vid][0]) {
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| 238 |
for (i = 0; i < 2; i++)
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| 239 |
vp->uv[i] = mp->uvlim[0][i] +
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| 240 |
(mp->uvlim[1][i] - mp->uvlim[0][i])*
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| 241 |
(pp->uv[vid][i] + .5)*(1./4294967296.);
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| 242 |
vp->fl |= MT_UV;
|
| 243 |
}
|
| 244 |
return(vp->fl);
|
| 245 |
}
|
| 246 |
|
| 247 |
|
| 248 |
OBJREC *
|
| 249 |
getmeshpseudo(mp, mo) /* get mesh pseudo object for material */
|
| 250 |
MESH *mp;
|
| 251 |
OBJECT mo;
|
| 252 |
{
|
| 253 |
if (mo < mp->mat0 || mo >= mp->mat0 + mp->nmats)
|
| 254 |
error(INTERNAL, "modifier out of range in getmeshpseudo");
|
| 255 |
if (mp->pseudo == NULL) {
|
| 256 |
register int i;
|
| 257 |
mp->pseudo = (OBJREC *)calloc(mp->nmats, sizeof(OBJREC));
|
| 258 |
if (mp->pseudo == NULL)
|
| 259 |
error(SYSTEM, "out of memory in getmeshpseudo");
|
| 260 |
for (i = mp->nmats; i--; ) {
|
| 261 |
mp->pseudo[i].omod = mp->mat0 + i;
|
| 262 |
mp->pseudo[i].otype = OBJ_FACE;
|
| 263 |
mp->pseudo[i].oname = "M-Tri";
|
| 264 |
}
|
| 265 |
}
|
| 266 |
return(&mp->pseudo[mo - mp->mat0]);
|
| 267 |
}
|
| 268 |
|
| 269 |
|
| 270 |
int
|
| 271 |
getmeshtri(tv, mo, mp, ti, wha) /* get triangle vertices */
|
| 272 |
MESHVERT tv[3];
|
| 273 |
OBJECT *mo;
|
| 274 |
MESH *mp;
|
| 275 |
OBJECT ti;
|
| 276 |
int wha;
|
| 277 |
{
|
| 278 |
int32 tvid[3];
|
| 279 |
|
| 280 |
if (!getmeshtrivid(tvid, mo, mp, ti))
|
| 281 |
return(0);
|
| 282 |
|
| 283 |
getmeshvert(&tv[0], mp, tvid[0], wha);
|
| 284 |
getmeshvert(&tv[1], mp, tvid[1], wha);
|
| 285 |
getmeshvert(&tv[2], mp, tvid[2], wha);
|
| 286 |
|
| 287 |
return(tv[0].fl & tv[1].fl & tv[2].fl);
|
| 288 |
}
|
| 289 |
|
| 290 |
|
| 291 |
int32
|
| 292 |
addmeshvert(mp, vp) /* find/add a mesh vertex */
|
| 293 |
register MESH *mp;
|
| 294 |
MESHVERT *vp;
|
| 295 |
{
|
| 296 |
LUENT *lvp;
|
| 297 |
MCVERT cv;
|
| 298 |
register int i;
|
| 299 |
|
| 300 |
if (!(vp->fl & MT_V))
|
| 301 |
return(-1);
|
| 302 |
/* encode vertex */
|
| 303 |
for (i = 0; i < 3; i++) {
|
| 304 |
if (vp->v[i] < mp->mcube.cuorg[i])
|
| 305 |
return(-1);
|
| 306 |
if (vp->v[i] >= mp->mcube.cuorg[i] + mp->mcube.cusize)
|
| 307 |
return(-1);
|
| 308 |
cv.xyz[i] = (uint32)(4294967296. *
|
| 309 |
(vp->v[i] - mp->mcube.cuorg[i]) /
|
| 310 |
mp->mcube.cusize);
|
| 311 |
}
|
| 312 |
if (vp->fl & MT_N) /* assumes normalized! */
|
| 313 |
cv.norm = encodedir(vp->n);
|
| 314 |
if (vp->fl & MT_UV)
|
| 315 |
for (i = 0; i < 2; i++) {
|
| 316 |
if (vp->uv[i] <= mp->uvlim[0][i])
|
| 317 |
return(-1);
|
| 318 |
if (vp->uv[i] >= mp->uvlim[1][i])
|
| 319 |
return(-1);
|
| 320 |
cv.uv[i] = (uint32)(4294967296. *
|
| 321 |
(vp->uv[i] - mp->uvlim[0][i]) /
|
| 322 |
(mp->uvlim[1][i] - mp->uvlim[0][i]));
|
| 323 |
}
|
| 324 |
cv.fl = vp->fl;
|
| 325 |
if (mp->lut.tsiz == 0) {
|
| 326 |
mp->lut.hashf = cvhash;
|
| 327 |
mp->lut.keycmp = cvcmp;
|
| 328 |
mp->lut.freek = free;
|
| 329 |
if (!lu_init(&mp->lut, 50000))
|
| 330 |
goto nomem;
|
| 331 |
}
|
| 332 |
/* find entry */
|
| 333 |
lvp = lu_find(&mp->lut, (char *)&cv);
|
| 334 |
if (lvp == NULL)
|
| 335 |
goto nomem;
|
| 336 |
if (lvp->key == NULL) {
|
| 337 |
lvp->key = (char *)malloc(sizeof(MCVERT)+sizeof(int32));
|
| 338 |
memcpy((void *)lvp->key, (void *)&cv, sizeof(MCVERT));
|
| 339 |
}
|
| 340 |
if (lvp->data == NULL) { /* new vertex */
|
| 341 |
register MESHPATCH *pp;
|
| 342 |
if (mp->npatches <= 0) {
|
| 343 |
mp->patch = (MESHPATCH *)calloc(MPATCHBLKSIZ,
|
| 344 |
sizeof(MESHPATCH));
|
| 345 |
if (mp->patch == NULL)
|
| 346 |
goto nomem;
|
| 347 |
mp->npatches = 1;
|
| 348 |
} else if (mp->patch[mp->npatches-1].nverts >= 256) {
|
| 349 |
if (mp->npatches % MPATCHBLKSIZ == 0) {
|
| 350 |
mp->patch = (MESHPATCH *)realloc(
|
| 351 |
(void *)mp->patch,
|
| 352 |
(mp->npatches + MPATCHBLKSIZ)*
|
| 353 |
sizeof(MESHPATCH));
|
| 354 |
memset((void *)(mp->patch + mp->npatches), '\0',
|
| 355 |
MPATCHBLKSIZ*sizeof(MESHPATCH));
|
| 356 |
}
|
| 357 |
if (mp->npatches++ >= 1L<<22)
|
| 358 |
error(INTERNAL, "too many mesh patches");
|
| 359 |
}
|
| 360 |
pp = &mp->patch[mp->npatches-1];
|
| 361 |
if (pp->xyz == NULL) {
|
| 362 |
pp->xyz = (uint32 (*)[3])calloc(256, 3*sizeof(int32));
|
| 363 |
if (pp->xyz == NULL)
|
| 364 |
goto nomem;
|
| 365 |
}
|
| 366 |
for (i = 0; i < 3; i++)
|
| 367 |
pp->xyz[pp->nverts][i] = cv.xyz[i];
|
| 368 |
if (cv.fl & MT_N) {
|
| 369 |
if (pp->norm == NULL) {
|
| 370 |
pp->norm = (int32 *)calloc(256, sizeof(int32));
|
| 371 |
if (pp->norm == NULL)
|
| 372 |
goto nomem;
|
| 373 |
}
|
| 374 |
pp->norm[pp->nverts] = cv.norm;
|
| 375 |
}
|
| 376 |
if (cv.fl & MT_UV) {
|
| 377 |
if (pp->uv == NULL) {
|
| 378 |
pp->uv = (uint32 (*)[2])calloc(256,
|
| 379 |
2*sizeof(uint32));
|
| 380 |
if (pp->uv == NULL)
|
| 381 |
goto nomem;
|
| 382 |
}
|
| 383 |
for (i = 0; i < 2; i++)
|
| 384 |
pp->uv[pp->nverts][i] = cv.uv[i];
|
| 385 |
}
|
| 386 |
pp->nverts++;
|
| 387 |
lvp->data = lvp->key + sizeof(MCVERT);
|
| 388 |
*(int32 *)lvp->data = (mp->npatches-1) << 8 | (pp->nverts-1);
|
| 389 |
}
|
| 390 |
return(*(int32 *)lvp->data);
|
| 391 |
nomem:
|
| 392 |
error(SYSTEM, "out of memory in addmeshvert");
|
| 393 |
return(-1);
|
| 394 |
}
|
| 395 |
|
| 396 |
|
| 397 |
OBJECT
|
| 398 |
addmeshtri(mp, tv, mo) /* add a new mesh triangle */
|
| 399 |
MESH *mp;
|
| 400 |
MESHVERT tv[3];
|
| 401 |
OBJECT mo;
|
| 402 |
{
|
| 403 |
int32 vid[3], t;
|
| 404 |
int pn[3], i;
|
| 405 |
register MESHPATCH *pp;
|
| 406 |
|
| 407 |
if (!(tv[0].fl & tv[1].fl & tv[2].fl & MT_V))
|
| 408 |
return(OVOID);
|
| 409 |
/* find/allocate patch vertices */
|
| 410 |
for (i = 0; i < 3; i++) {
|
| 411 |
if ((vid[i] = addmeshvert(mp, &tv[i])) < 0)
|
| 412 |
return(OVOID);
|
| 413 |
pn[i] = vid[i] >> 8;
|
| 414 |
}
|
| 415 |
/* normalize material index */
|
| 416 |
if (mo != OVOID) {
|
| 417 |
if ((mo -= mp->mat0) >= mp->nmats)
|
| 418 |
mp->nmats = mo+1;
|
| 419 |
else if (mo < 0)
|
| 420 |
error(INTERNAL, "modifier range error in addmeshtri");
|
| 421 |
}
|
| 422 |
/* assign triangle */
|
| 423 |
if (pn[0] == pn[1] && pn[1] == pn[2]) { /* local case */
|
| 424 |
pp = &mp->patch[pn[0]];
|
| 425 |
if (pp->tri == NULL) {
|
| 426 |
pp->tri = (struct PTri *)malloc(
|
| 427 |
512*sizeof(struct PTri));
|
| 428 |
if (pp->tri == NULL)
|
| 429 |
goto nomem;
|
| 430 |
}
|
| 431 |
if (pp->ntris < 512) {
|
| 432 |
pp->tri[pp->ntris].v1 = vid[0] & 0xff;
|
| 433 |
pp->tri[pp->ntris].v2 = vid[1] & 0xff;
|
| 434 |
pp->tri[pp->ntris].v3 = vid[2] & 0xff;
|
| 435 |
if (pp->ntris == 0)
|
| 436 |
pp->solemat = mo;
|
| 437 |
else if (pp->trimat == NULL && mo != pp->solemat) {
|
| 438 |
pp->trimat = (int16 *)malloc(
|
| 439 |
512*sizeof(int16));
|
| 440 |
if (pp->trimat == NULL)
|
| 441 |
goto nomem;
|
| 442 |
for (i = pp->ntris; i--; )
|
| 443 |
pp->trimat[i] = pp->solemat;
|
| 444 |
}
|
| 445 |
if (pp->trimat != NULL)
|
| 446 |
pp->trimat[pp->ntris] = mo;
|
| 447 |
return(pn[0] << 10 | pp->ntris++);
|
| 448 |
}
|
| 449 |
}
|
| 450 |
if (pn[0] == pn[1]) {
|
| 451 |
t = vid[2]; vid[2] = vid[1]; vid[1] = vid[0]; vid[0] = t;
|
| 452 |
i = pn[2]; pn[2] = pn[1]; pn[1] = pn[0]; pn[0] = i;
|
| 453 |
} else if (pn[0] == pn[2]) {
|
| 454 |
t = vid[0]; vid[0] = vid[1]; vid[1] = vid[2]; vid[2] = t;
|
| 455 |
i = pn[0]; pn[0] = pn[1]; pn[1] = pn[2]; pn[2] = i;
|
| 456 |
}
|
| 457 |
if (pn[1] == pn[2]) { /* single link */
|
| 458 |
pp = &mp->patch[pn[1]];
|
| 459 |
if (pp->j1tri == NULL) {
|
| 460 |
pp->j1tri = (struct PJoin1 *)malloc(
|
| 461 |
256*sizeof(struct PJoin1));
|
| 462 |
if (pp->j1tri == NULL)
|
| 463 |
goto nomem;
|
| 464 |
}
|
| 465 |
if (pp->nj1tris < 256) {
|
| 466 |
pp->j1tri[pp->nj1tris].v1j = vid[0];
|
| 467 |
pp->j1tri[pp->nj1tris].v2 = vid[1] & 0xff;
|
| 468 |
pp->j1tri[pp->nj1tris].v3 = vid[2] & 0xff;
|
| 469 |
pp->j1tri[pp->nj1tris].mat = mo;
|
| 470 |
return(pn[1] << 10 | 0x200 | pp->nj1tris++);
|
| 471 |
}
|
| 472 |
}
|
| 473 |
/* double link */
|
| 474 |
pp = &mp->patch[pn[2]];
|
| 475 |
if (pp->j2tri == NULL) {
|
| 476 |
pp->j2tri = (struct PJoin2 *)malloc(
|
| 477 |
256*sizeof(struct PJoin2));
|
| 478 |
if (pp->j2tri == NULL)
|
| 479 |
goto nomem;
|
| 480 |
}
|
| 481 |
if (pp->nj2tris >= 256)
|
| 482 |
error(INTERNAL, "too many patch triangles in addmeshtri");
|
| 483 |
pp->j2tri[pp->nj2tris].v1j = vid[0];
|
| 484 |
pp->j2tri[pp->nj2tris].v2j = vid[1];
|
| 485 |
pp->j2tri[pp->nj2tris].v3 = vid[2] & 0xff;
|
| 486 |
pp->j2tri[pp->nj2tris].mat = mo;
|
| 487 |
return(pn[2] << 10 | 0x300 | pp->nj2tris++);
|
| 488 |
nomem:
|
| 489 |
error(SYSTEM, "out of memory in addmeshtri");
|
| 490 |
return(OVOID);
|
| 491 |
}
|
| 492 |
|
| 493 |
|
| 494 |
char *
|
| 495 |
checkmesh(mp) /* validate mesh data */
|
| 496 |
register MESH *mp;
|
| 497 |
{
|
| 498 |
static char embuf[128];
|
| 499 |
int nouvbounds = 1;
|
| 500 |
register int i;
|
| 501 |
/* basic checks */
|
| 502 |
if (mp == NULL)
|
| 503 |
return("NULL mesh pointer");
|
| 504 |
if (!mp->ldflags)
|
| 505 |
return("unassigned mesh");
|
| 506 |
if (mp->name == NULL)
|
| 507 |
return("missing mesh name");
|
| 508 |
if (mp->nref <= 0)
|
| 509 |
return("unreferenced mesh");
|
| 510 |
/* check boundaries */
|
| 511 |
if (mp->ldflags & IO_BOUNDS) {
|
| 512 |
if (mp->mcube.cusize <= FTINY)
|
| 513 |
return("illegal octree bounds in mesh");
|
| 514 |
nouvbounds = (mp->uvlim[1][0] - mp->uvlim[0][0] <= FTINY ||
|
| 515 |
mp->uvlim[1][1] - mp->uvlim[0][1] <= FTINY);
|
| 516 |
}
|
| 517 |
/* check octree */
|
| 518 |
if (mp->ldflags & IO_TREE) {
|
| 519 |
if (isempty(mp->mcube.cutree))
|
| 520 |
error(WARNING, "empty mesh octree");
|
| 521 |
}
|
| 522 |
/* check scene data */
|
| 523 |
if (mp->ldflags & IO_SCENE) {
|
| 524 |
if (!(mp->ldflags & IO_BOUNDS))
|
| 525 |
return("unbounded scene in mesh");
|
| 526 |
if (mp->mat0 < 0 || mp->mat0+mp->nmats > nobjects)
|
| 527 |
return("bad mesh modifier range");
|
| 528 |
for (i = mp->mat0+mp->nmats; i-- > mp->mat0; ) {
|
| 529 |
int otyp = objptr(i)->otype;
|
| 530 |
if (!ismodifier(otyp)) {
|
| 531 |
sprintf(embuf,
|
| 532 |
"non-modifier in mesh (%s \"%s\")",
|
| 533 |
ofun[otyp].funame, objptr(i)->oname);
|
| 534 |
return(embuf);
|
| 535 |
}
|
| 536 |
}
|
| 537 |
if (mp->npatches <= 0)
|
| 538 |
error(WARNING, "no patches in mesh");
|
| 539 |
for (i = 0; i < mp->npatches; i++) {
|
| 540 |
register MESHPATCH *pp = &mp->patch[i];
|
| 541 |
if (pp->nverts <= 0)
|
| 542 |
error(WARNING, "no vertices in patch");
|
| 543 |
else {
|
| 544 |
if (pp->xyz == NULL)
|
| 545 |
return("missing patch vertex list");
|
| 546 |
if (nouvbounds && pp->uv != NULL)
|
| 547 |
return("unreferenced uv coordinates");
|
| 548 |
}
|
| 549 |
if (pp->ntris > 0 && pp->tri == NULL)
|
| 550 |
return("missing patch triangle list");
|
| 551 |
if (pp->nj1tris > 0 && pp->j1tri == NULL)
|
| 552 |
return("missing patch joiner triangle list");
|
| 553 |
if (pp->nj2tris > 0 && pp->j2tri == NULL)
|
| 554 |
return("missing patch double-joiner list");
|
| 555 |
}
|
| 556 |
}
|
| 557 |
return(NULL); /* seems OK */
|
| 558 |
}
|
| 559 |
|
| 560 |
|
| 561 |
static void
|
| 562 |
tallyoctree(ot, ecp, lcp, ocp) /* tally octree size */
|
| 563 |
OCTREE ot;
|
| 564 |
int *ecp, *lcp, *ocp;
|
| 565 |
{
|
| 566 |
int i;
|
| 567 |
|
| 568 |
if (isempty(ot)) {
|
| 569 |
(*ecp)++;
|
| 570 |
return;
|
| 571 |
}
|
| 572 |
if (isfull(ot)) {
|
| 573 |
OBJECT oset[MAXSET+1];
|
| 574 |
(*lcp)++;
|
| 575 |
objset(oset, ot);
|
| 576 |
*ocp += oset[0];
|
| 577 |
return;
|
| 578 |
}
|
| 579 |
for (i = 0; i < 8; i++)
|
| 580 |
tallyoctree(octkid(ot, i), ecp, lcp, ocp);
|
| 581 |
}
|
| 582 |
|
| 583 |
|
| 584 |
void
|
| 585 |
printmeshstats(ms, fp) /* print out mesh statistics */
|
| 586 |
MESH *ms;
|
| 587 |
FILE *fp;
|
| 588 |
{
|
| 589 |
int lfcnt=0, lecnt=0, locnt=0;
|
| 590 |
int vcnt=0, ncnt=0, uvcnt=0;
|
| 591 |
int nscnt=0, uvscnt=0;
|
| 592 |
int tcnt=0, t1cnt=0, t2cnt=0;
|
| 593 |
int i, j;
|
| 594 |
|
| 595 |
tallyoctree(ms->mcube.cutree, &lecnt, &lfcnt, &locnt);
|
| 596 |
for (i = 0; i < ms->npatches; i++) {
|
| 597 |
register MESHPATCH *pp = &ms->patch[i];
|
| 598 |
vcnt += pp->nverts;
|
| 599 |
if (pp->norm != NULL) {
|
| 600 |
for (j = pp->nverts; j--; )
|
| 601 |
if (pp->norm[j])
|
| 602 |
ncnt++;
|
| 603 |
nscnt += pp->nverts;
|
| 604 |
}
|
| 605 |
if (pp->uv != NULL) {
|
| 606 |
for (j = pp->nverts; j--; )
|
| 607 |
if (pp->uv[j][0])
|
| 608 |
uvcnt++;
|
| 609 |
uvscnt += pp->nverts;
|
| 610 |
}
|
| 611 |
tcnt += pp->ntris;
|
| 612 |
t1cnt += pp->nj1tris;
|
| 613 |
t2cnt += pp->nj2tris;
|
| 614 |
}
|
| 615 |
fprintf(fp, "Mesh statistics:\n");
|
| 616 |
fprintf(fp, "\t%ld materials\n", ms->nmats);
|
| 617 |
fprintf(fp, "\t%d patches (%.2f MBytes)\n", ms->npatches,
|
| 618 |
(ms->npatches*sizeof(MESHPATCH) +
|
| 619 |
vcnt*3*sizeof(uint32) +
|
| 620 |
nscnt*sizeof(int32) +
|
| 621 |
uvscnt*2*sizeof(uint32) +
|
| 622 |
tcnt*sizeof(struct PTri) +
|
| 623 |
t1cnt*sizeof(struct PJoin1) +
|
| 624 |
t2cnt*sizeof(struct PJoin2))/(1024.*1024.));
|
| 625 |
fprintf(fp, "\t%d vertices (%.1f%% w/ normals, %.1f%% w/ uv)\n",
|
| 626 |
vcnt, 100.*ncnt/vcnt, 100.*uvcnt/vcnt);
|
| 627 |
fprintf(fp, "\t%d triangles (%.1f%% local, %.1f%% joiner)\n",
|
| 628 |
tcnt+t1cnt+t2cnt,
|
| 629 |
100.*tcnt/(tcnt+t1cnt+t2cnt),
|
| 630 |
100.*t1cnt/(tcnt+t1cnt+t2cnt));
|
| 631 |
fprintf(fp,
|
| 632 |
"\t%d leaves in octree (%.1f%% empty, %.2f avg. set size)\n",
|
| 633 |
lfcnt+lecnt, 100.*lecnt/(lfcnt+lecnt),
|
| 634 |
(double)locnt/lfcnt);
|
| 635 |
}
|
| 636 |
|
| 637 |
|
| 638 |
void
|
| 639 |
freemesh(ms) /* free mesh data */
|
| 640 |
register MESH *ms;
|
| 641 |
{
|
| 642 |
MESH mhead;
|
| 643 |
MESH *msp;
|
| 644 |
|
| 645 |
if (ms == NULL)
|
| 646 |
return;
|
| 647 |
if (ms->nref <= 0)
|
| 648 |
error(CONSISTENCY, "unreferenced mesh in freemesh");
|
| 649 |
ms->nref--;
|
| 650 |
if (ms->nref) /* still in use */
|
| 651 |
return;
|
| 652 |
/* else remove from list */
|
| 653 |
mhead.next = mlist;
|
| 654 |
for (msp = &mhead; msp->next != NULL; msp = msp->next)
|
| 655 |
if (msp->next == ms) {
|
| 656 |
msp->next = ms->next;
|
| 657 |
ms->next = NULL;
|
| 658 |
break;
|
| 659 |
}
|
| 660 |
if (ms->next != NULL) /* can't be in list anymore */
|
| 661 |
error(CONSISTENCY, "unlisted mesh in freemesh");
|
| 662 |
mlist = mhead.next;
|
| 663 |
/* free mesh data */
|
| 664 |
freestr(ms->name);
|
| 665 |
octfree(ms->mcube.cutree);
|
| 666 |
lu_done(&ms->lut);
|
| 667 |
if (ms->npatches > 0) {
|
| 668 |
register MESHPATCH *pp = ms->patch + ms->npatches;
|
| 669 |
while (pp-- > ms->patch) {
|
| 670 |
if (pp->j2tri != NULL)
|
| 671 |
free((void *)pp->j2tri);
|
| 672 |
if (pp->j1tri != NULL)
|
| 673 |
free((void *)pp->j1tri);
|
| 674 |
if (pp->tri != NULL)
|
| 675 |
free((void *)pp->tri);
|
| 676 |
if (pp->uv != NULL)
|
| 677 |
free((void *)pp->uv);
|
| 678 |
if (pp->norm != NULL)
|
| 679 |
free((void *)pp->norm);
|
| 680 |
if (pp->xyz != NULL)
|
| 681 |
free((void *)pp->xyz);
|
| 682 |
}
|
| 683 |
free((void *)ms->patch);
|
| 684 |
}
|
| 685 |
if (ms->pseudo != NULL)
|
| 686 |
free((void *)ms->pseudo);
|
| 687 |
free((void *)ms);
|
| 688 |
}
|
| 689 |
|
| 690 |
|
| 691 |
void
|
| 692 |
freemeshinst(o) /* free mesh instance */
|
| 693 |
OBJREC *o;
|
| 694 |
{
|
| 695 |
if (o->os == NULL)
|
| 696 |
return;
|
| 697 |
freemesh((*(MESHINST *)o->os).msh);
|
| 698 |
free((void *)o->os);
|
| 699 |
o->os = NULL;
|
| 700 |
}
|
