| 1 |
gwlarson |
3.1 |
#ifndef lint
|
| 2 |
greg |
3.5 |
static const char RCSid[] = "$Id$";
|
| 3 |
gwlarson |
3.1 |
#endif
|
| 4 |
|
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/*
|
| 5 |
|
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* Routines for reading instances and converting to OpenGL.
|
| 6 |
|
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*/
|
| 7 |
|
|
|
| 8 |
greg |
3.6 |
#include "copyright.h"
|
| 9 |
greg |
3.5 |
|
| 10 |
gwlarson |
3.1 |
#include "radogl.h"
|
| 11 |
|
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#include "octree.h"
|
| 12 |
|
|
|
| 13 |
gwlarson |
3.2 |
#define MAXLEVEL 16 /* maximum instance hierarchy level */
|
| 14 |
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|
| 15 |
gwlarson |
3.1 |
typedef struct {
|
| 16 |
|
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int listid; /* our list id */
|
| 17 |
|
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short localmatl; /* uses local material only */
|
| 18 |
|
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FVECT cent; /* center of octree cube */
|
| 19 |
|
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char octfile[256]; /* octree file path */
|
| 20 |
|
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} OCTINST; /* octree to instantiate */
|
| 21 |
|
|
|
| 22 |
|
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static double ogetflt();
|
| 23 |
|
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static long ogetint();
|
| 24 |
|
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static char *ogetstr();
|
| 25 |
greg |
3.5 |
static int loadobj();
|
| 26 |
|
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static void skiptree();
|
| 27 |
|
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static void octerror();
|
| 28 |
gwlarson |
3.1 |
static OCTINST *getoct();
|
| 29 |
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|
|
| 30 |
|
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static char *infn; /* input file name */
|
| 31 |
|
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static FILE *infp; /* input file stream */
|
| 32 |
|
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static int objsize; /* size of stored OBJECT's */
|
| 33 |
|
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static short otypmap[NUMOTYPE+8]; /* object type map */
|
| 34 |
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|
| 35 |
gwlarson |
3.4 |
static unsigned long imhash(mod) char *mod; {return((unsigned long)mod);}
|
| 36 |
gwlarson |
3.1 |
static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0};
|
| 37 |
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|
| 38 |
|
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static LUTAB ottab = LU_SINIT(free,free);
|
| 39 |
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|
| 40 |
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|
| 41 |
greg |
3.5 |
int
|
| 42 |
gwlarson |
3.1 |
o_instance(o) /* convert instance to list call */
|
| 43 |
|
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register OBJREC *o;
|
| 44 |
|
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{
|
| 45 |
|
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XF xfs;
|
| 46 |
|
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register OCTINST *ot;
|
| 47 |
|
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/* set up */
|
| 48 |
|
|
if (o->oargs.nsargs < 1)
|
| 49 |
|
|
objerror(o, USER, "missing octree");
|
| 50 |
|
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setmaterial(NULL, NULL, 0);
|
| 51 |
|
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/* put out transform (if any) */
|
| 52 |
|
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if (o->oargs.nsargs > 1) {
|
| 53 |
|
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if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) !=
|
| 54 |
|
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o->oargs.nsargs-1)
|
| 55 |
|
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objerror(o, USER, "bad transform");
|
| 56 |
|
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glPushAttrib(GL_TRANSFORM_BIT);
|
| 57 |
|
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if (xfs.sca < 1.-FTINY | xfs.sca > 1.+FTINY)
|
| 58 |
|
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glEnable(GL_NORMALIZE);
|
| 59 |
|
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glMatrixMode(GL_MODELVIEW);
|
| 60 |
|
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glPushMatrix();
|
| 61 |
|
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/* matrix order works out to same */
|
| 62 |
|
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#ifdef SMLFLT
|
| 63 |
|
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glMultMatrixf((GLfloat *)xfs.xfm);
|
| 64 |
|
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#else
|
| 65 |
|
|
glMultMatrixd((GLdouble *)xfs.xfm);
|
| 66 |
|
|
#endif
|
| 67 |
|
|
}
|
| 68 |
|
|
ot = getoct(o->oargs.sarg[0]); /* get octree reference */
|
| 69 |
|
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if (ot->localmatl &= o->os != NULL) /* set material */
|
| 70 |
greg |
3.5 |
setmaterial((MATREC *)o->os, ot->cent, 0);
|
| 71 |
gwlarson |
3.1 |
/* call the assigned list */
|
| 72 |
|
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glCallList(ot->listid);
|
| 73 |
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|
| 74 |
|
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if (o->oargs.nsargs > 1) { /* end transform */
|
| 75 |
gwlarson |
3.3 |
glMatrixMode(GL_MODELVIEW);
|
| 76 |
gwlarson |
3.1 |
glPopMatrix();
|
| 77 |
|
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glPopAttrib();
|
| 78 |
|
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}
|
| 79 |
|
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rgl_checkerr("creating instance");
|
| 80 |
|
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}
|
| 81 |
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|
| 82 |
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|
| 83 |
|
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static int
|
| 84 |
|
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buildoctlist(lp) /* build octree list */
|
| 85 |
|
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LUENT *lp;
|
| 86 |
|
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{
|
| 87 |
|
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int old_dolights = dolights, old_domats = domats;
|
| 88 |
|
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register OCTINST *op = (OCTINST *)lp->data;
|
| 89 |
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|
| 90 |
|
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domats = !op->localmatl; /* do materials only if needed */
|
| 91 |
|
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dolights = 0; /* never do light sources */
|
| 92 |
|
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glNewList(op->listid, GL_COMPILE);
|
| 93 |
|
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loadoct(op->octfile); /* load objects into display list */
|
| 94 |
|
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surfclean(); /* clean up */
|
| 95 |
|
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glEndList();
|
| 96 |
|
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dolights = old_dolights; /* restore */
|
| 97 |
|
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domats = old_domats;
|
| 98 |
|
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return(1); /* return success */
|
| 99 |
|
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}
|
| 100 |
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|
| 101 |
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|
| 102 |
|
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int
|
| 103 |
|
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loadoctrees() /* load octrees we've saved up */
|
| 104 |
|
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{
|
| 105 |
gwlarson |
3.2 |
int levelsleft = MAXLEVEL;
|
| 106 |
gwlarson |
3.1 |
int nocts = 0;
|
| 107 |
|
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LUTAB looptab;
|
| 108 |
|
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/* loop through new octree references */
|
| 109 |
|
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while (ottab.tsiz) {
|
| 110 |
gwlarson |
3.2 |
if (!levelsleft--)
|
| 111 |
|
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error(USER, "too many octree levels -- instance loop?");
|
| 112 |
gwlarson |
3.1 |
copystruct(&looptab, &ottab);
|
| 113 |
|
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ottab.tsiz = 0;
|
| 114 |
|
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nocts += lu_doall(&looptab, buildoctlist);
|
| 115 |
|
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lu_done(&looptab);
|
| 116 |
|
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}
|
| 117 |
|
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return(nocts);
|
| 118 |
|
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}
|
| 119 |
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|
| 120 |
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|
| 121 |
|
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static OCTINST *
|
| 122 |
|
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getoct(name) /* get/assign octree list id */
|
| 123 |
|
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char *name;
|
| 124 |
|
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{
|
| 125 |
|
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extern char *getpath(), *getlibpath();
|
| 126 |
|
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char *path;
|
| 127 |
|
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register LUENT *lp;
|
| 128 |
|
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register OCTINST *op;
|
| 129 |
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|
| 130 |
|
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if ((lp = lu_find(&ottab, name)) == NULL)
|
| 131 |
|
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goto memerr;
|
| 132 |
|
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if (lp->key == NULL) {
|
| 133 |
|
|
lp->key = (char *)malloc(strlen(name)+1);
|
| 134 |
|
|
if (lp->key == NULL)
|
| 135 |
|
|
goto memerr;
|
| 136 |
|
|
strcpy(lp->key, name);
|
| 137 |
|
|
}
|
| 138 |
|
|
if ((op = (OCTINST *)lp->data) == NULL) {
|
| 139 |
|
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path = getpath(name, getlibpath(), R_OK);
|
| 140 |
|
|
if (path == NULL) {
|
| 141 |
|
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sprintf(errmsg, "cannot find octree \"%s\"", name);
|
| 142 |
|
|
error(USER, errmsg);
|
| 143 |
|
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}
|
| 144 |
|
|
op = (OCTINST *)(lp->data = (char *)malloc(sizeof(OCTINST)));
|
| 145 |
|
|
strcpy(op->octfile, path);
|
| 146 |
|
|
checkoct(op->octfile, op->cent);
|
| 147 |
|
|
op->listid = newglist();
|
| 148 |
|
|
op->localmatl = ~0;
|
| 149 |
|
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}
|
| 150 |
|
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return(op);
|
| 151 |
|
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memerr:
|
| 152 |
|
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error(SYSTEM, "out of memory in getoct");
|
| 153 |
|
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}
|
| 154 |
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|
| 155 |
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|
| 156 |
|
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double
|
| 157 |
|
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checkoct(fname, cent) /* check octree file for validity */
|
| 158 |
|
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char *fname;
|
| 159 |
|
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FVECT cent;
|
| 160 |
|
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{
|
| 161 |
|
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char sbuf[64];
|
| 162 |
|
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FILE *fp = infp;
|
| 163 |
|
|
char *fn = infn;
|
| 164 |
|
|
double siz = 0.;
|
| 165 |
|
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register int i;
|
| 166 |
|
|
|
| 167 |
|
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if ((infp = fopen(infn=fname, "r")) == NULL) {
|
| 168 |
|
|
sprintf(errmsg, "cannot open octree file \"%s\"", fname);
|
| 169 |
|
|
error(SYSTEM, errmsg);
|
| 170 |
|
|
}
|
| 171 |
|
|
#ifdef MSDOS
|
| 172 |
|
|
setmode(fileno(infp), O_BINARY);
|
| 173 |
|
|
#endif
|
| 174 |
|
|
/* get header */
|
| 175 |
|
|
if (checkheader(infp, OCTFMT, NULL) < 0)
|
| 176 |
|
|
octerror(USER, "not an octree");
|
| 177 |
|
|
/* check format */
|
| 178 |
|
|
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 ||
|
| 179 |
|
|
objsize > MAXOBJSIZ || objsize > sizeof(long))
|
| 180 |
|
|
octerror("incompatible octree format");
|
| 181 |
|
|
if (cent != NULL) { /* get boundaries (compute center) */
|
| 182 |
|
|
for (i = 0; i < 3; i++)
|
| 183 |
|
|
cent[i] = atof(ogetstr(sbuf));
|
| 184 |
|
|
siz = atof(ogetstr(sbuf))*.5;
|
| 185 |
|
|
cent[0] += siz; cent[1] += siz; cent[2] += siz;
|
| 186 |
|
|
} else { /* get size (radius) only */
|
| 187 |
|
|
for (i = 0; i < 3; i++)
|
| 188 |
|
|
ogetstr(sbuf);
|
| 189 |
|
|
siz = atof(ogetstr(sbuf))*.5;
|
| 190 |
|
|
}
|
| 191 |
|
|
fclose(infp);
|
| 192 |
|
|
infp = fp;
|
| 193 |
|
|
infn = fn;
|
| 194 |
|
|
return(siz);
|
| 195 |
|
|
}
|
| 196 |
|
|
|
| 197 |
|
|
|
| 198 |
greg |
3.5 |
int
|
| 199 |
gwlarson |
3.1 |
loadoct(fname) /* read in objects from octree */
|
| 200 |
|
|
char *fname;
|
| 201 |
|
|
{
|
| 202 |
|
|
OBJECT fnobjects;
|
| 203 |
|
|
char sbuf[256];
|
| 204 |
|
|
int nf;
|
| 205 |
|
|
register int i;
|
| 206 |
|
|
long m;
|
| 207 |
|
|
|
| 208 |
|
|
infn = fname;
|
| 209 |
|
|
infp = fopen(fname, "r"); /* assume already checked */
|
| 210 |
|
|
#ifdef MSDOS
|
| 211 |
|
|
setmode(fileno(infp), O_BINARY);
|
| 212 |
|
|
#endif
|
| 213 |
|
|
/* skip header */
|
| 214 |
|
|
getheader(infp, NULL, NULL);
|
| 215 |
|
|
/* get format */
|
| 216 |
|
|
objsize = ogetint(2)-OCTMAGIC;
|
| 217 |
|
|
/* skip boundaries */
|
| 218 |
|
|
for (i = 0; i < 4; i++)
|
| 219 |
|
|
ogetstr(sbuf);
|
| 220 |
|
|
nf = 0; /* load object files */
|
| 221 |
|
|
while (*ogetstr(sbuf)) {
|
| 222 |
|
|
rgl_load(sbuf);
|
| 223 |
|
|
nf++;
|
| 224 |
|
|
}
|
| 225 |
|
|
/* get number of objects */
|
| 226 |
|
|
fnobjects = m = ogetint(objsize);
|
| 227 |
|
|
if (fnobjects != m)
|
| 228 |
|
|
octerror(USER, "too many objects");
|
| 229 |
|
|
|
| 230 |
|
|
if (nf == 0) {
|
| 231 |
|
|
skiptree();
|
| 232 |
|
|
for (i = 0; *ogetstr(sbuf); i++)
|
| 233 |
|
|
if ((otypmap[i] = otype(sbuf)) < 0) {
|
| 234 |
|
|
sprintf(errmsg, "unknown type \"%s\"", sbuf);
|
| 235 |
|
|
octerror(WARNING, errmsg);
|
| 236 |
|
|
}
|
| 237 |
|
|
lu_init(&imtab, 1000); nobjects = 0;
|
| 238 |
|
|
while (loadobj() != OVOID)
|
| 239 |
|
|
;
|
| 240 |
|
|
lu_done(&imtab);
|
| 241 |
|
|
if (nobjects != fnobjects)
|
| 242 |
|
|
octerror(USER, "inconsistent object count");
|
| 243 |
|
|
}
|
| 244 |
|
|
fclose(infp);
|
| 245 |
|
|
return(nf);
|
| 246 |
|
|
}
|
| 247 |
|
|
|
| 248 |
|
|
|
| 249 |
|
|
static char *
|
| 250 |
|
|
ogetstr(s) /* get null-terminated string */
|
| 251 |
|
|
char *s;
|
| 252 |
|
|
{
|
| 253 |
|
|
extern char *getstr();
|
| 254 |
|
|
|
| 255 |
|
|
if (getstr(s, infp) == NULL)
|
| 256 |
|
|
octerror(USER, "truncated octree");
|
| 257 |
|
|
return(s);
|
| 258 |
|
|
}
|
| 259 |
|
|
|
| 260 |
|
|
|
| 261 |
|
|
static long
|
| 262 |
|
|
ogetint(siz) /* get a siz-byte integer */
|
| 263 |
|
|
int siz;
|
| 264 |
|
|
{
|
| 265 |
|
|
extern long getint();
|
| 266 |
|
|
register long r;
|
| 267 |
|
|
|
| 268 |
|
|
r = getint(siz, infp);
|
| 269 |
|
|
if (feof(infp))
|
| 270 |
|
|
octerror(USER, "truncated octree");
|
| 271 |
|
|
return(r);
|
| 272 |
|
|
}
|
| 273 |
|
|
|
| 274 |
|
|
|
| 275 |
|
|
static double
|
| 276 |
|
|
ogetflt() /* get a floating point number */
|
| 277 |
|
|
{
|
| 278 |
|
|
extern double getflt();
|
| 279 |
|
|
double r;
|
| 280 |
|
|
|
| 281 |
|
|
r = getflt(infp);
|
| 282 |
|
|
if (feof(infp))
|
| 283 |
|
|
octerror(USER, "truncated octree");
|
| 284 |
|
|
return(r);
|
| 285 |
|
|
}
|
| 286 |
|
|
|
| 287 |
|
|
|
| 288 |
greg |
3.5 |
static void
|
| 289 |
gwlarson |
3.1 |
skiptree() /* skip octree on input */
|
| 290 |
|
|
{
|
| 291 |
|
|
register int i;
|
| 292 |
|
|
|
| 293 |
|
|
switch (getc(infp)) {
|
| 294 |
|
|
case OT_EMPTY:
|
| 295 |
|
|
return;
|
| 296 |
|
|
case OT_FULL:
|
| 297 |
|
|
for (i = ogetint(objsize)*objsize; i-- > 0; )
|
| 298 |
|
|
if (getc(infp) == EOF)
|
| 299 |
|
|
octerror(USER, "truncated octree");
|
| 300 |
|
|
return;
|
| 301 |
|
|
case OT_TREE:
|
| 302 |
|
|
for (i = 0; i < 8; i++)
|
| 303 |
|
|
skiptree();
|
| 304 |
|
|
return;
|
| 305 |
|
|
case EOF:
|
| 306 |
|
|
octerror(USER, "truncated octree");
|
| 307 |
|
|
default:
|
| 308 |
|
|
octerror(USER, "damaged octree");
|
| 309 |
|
|
}
|
| 310 |
|
|
}
|
| 311 |
|
|
|
| 312 |
|
|
|
| 313 |
greg |
3.5 |
static int
|
| 314 |
gwlarson |
3.1 |
loadobj() /* get next object */
|
| 315 |
|
|
{
|
| 316 |
|
|
static OBJREC ob;
|
| 317 |
|
|
char idbuf[MAXSTR], sbuf[MAXSTR];
|
| 318 |
|
|
register LUENT *lep;
|
| 319 |
|
|
register int i;
|
| 320 |
|
|
register long m;
|
| 321 |
|
|
/* get type */
|
| 322 |
|
|
i = ogetint(1);
|
| 323 |
|
|
if (i == -1)
|
| 324 |
|
|
return(OVOID); /* terminator */
|
| 325 |
|
|
if ((ob.otype = otypmap[i]) < 0)
|
| 326 |
|
|
octerror(USER, "reference to unknown type");
|
| 327 |
|
|
/* get modifier */
|
| 328 |
|
|
if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m)
|
| 329 |
|
|
octerror(USER, "too many objects");
|
| 330 |
|
|
if ((ob.omod = m) != OVOID && domats) {
|
| 331 |
|
|
if ((lep = lu_find(&imtab, (char *)m)) == NULL)
|
| 332 |
|
|
goto memerr;
|
| 333 |
|
|
ob.os = lep->data;
|
| 334 |
|
|
} else
|
| 335 |
|
|
ob.os = NULL;
|
| 336 |
|
|
/* get name id */
|
| 337 |
|
|
ob.oname = ogetstr(idbuf);
|
| 338 |
|
|
/* get string arguments */
|
| 339 |
|
|
if (ob.oargs.nsargs = ogetint(2)) {
|
| 340 |
|
|
ob.oargs.sarg = (char **)malloc
|
| 341 |
|
|
(ob.oargs.nsargs*sizeof(char *));
|
| 342 |
|
|
if (ob.oargs.sarg == NULL)
|
| 343 |
|
|
goto memerr;
|
| 344 |
|
|
for (i = 0; i < ob.oargs.nsargs; i++)
|
| 345 |
|
|
ob.oargs.sarg[i] = savestr(ogetstr(sbuf));
|
| 346 |
|
|
} else
|
| 347 |
|
|
ob.oargs.sarg = NULL;
|
| 348 |
|
|
/* get integer arguments */
|
| 349 |
|
|
#ifdef IARGS
|
| 350 |
|
|
if (ob.oargs.niargs = ogetint(2)) {
|
| 351 |
|
|
ob.oargs.iarg = (long *)malloc
|
| 352 |
|
|
(ob.oargs.niargs*sizeof(long));
|
| 353 |
|
|
if (ob.oargs.iarg == NULL)
|
| 354 |
|
|
goto memerr;
|
| 355 |
|
|
for (i = 0; i < ob.oargs.niargs; i++)
|
| 356 |
|
|
ob.oargs.iarg[i] = ogetint(4);
|
| 357 |
|
|
} else
|
| 358 |
|
|
ob.oargs.iarg = NULL;
|
| 359 |
|
|
#endif
|
| 360 |
|
|
/* get real arguments */
|
| 361 |
|
|
if (ob.oargs.nfargs = ogetint(2)) {
|
| 362 |
|
|
ob.oargs.farg = (FLOAT *)malloc
|
| 363 |
|
|
(ob.oargs.nfargs*sizeof(FLOAT));
|
| 364 |
|
|
if (ob.oargs.farg == NULL)
|
| 365 |
|
|
goto memerr;
|
| 366 |
|
|
for (i = 0; i < ob.oargs.nfargs; i++)
|
| 367 |
|
|
ob.oargs.farg[i] = ogetflt();
|
| 368 |
|
|
} else
|
| 369 |
|
|
ob.oargs.farg = NULL;
|
| 370 |
|
|
/* process object */
|
| 371 |
|
|
(*ofun[ob.otype].funp)(&ob);
|
| 372 |
|
|
/* record material if modifier */
|
| 373 |
|
|
if (ismodifier(ob.otype)) {
|
| 374 |
|
|
if ((lep = lu_find(&imtab, (char *)nobjects)) == NULL)
|
| 375 |
|
|
goto memerr;
|
| 376 |
|
|
lep->key = (char *)nobjects;
|
| 377 |
|
|
lep->data = (char *)getmatp(ob.oname);
|
| 378 |
|
|
}
|
| 379 |
|
|
freefargs(&ob.oargs); /* free arguments */
|
| 380 |
|
|
return(nobjects++); /* return object id */
|
| 381 |
|
|
memerr:
|
| 382 |
|
|
error(SYSTEM, "out of memory in loadobj");
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
|
| 386 |
greg |
3.5 |
static void
|
| 387 |
gwlarson |
3.1 |
octerror(etyp, msg) /* octree error */
|
| 388 |
|
|
int etyp;
|
| 389 |
|
|
char *msg;
|
| 390 |
|
|
{
|
| 391 |
|
|
char msgbuf[128];
|
| 392 |
|
|
|
| 393 |
|
|
sprintf(msgbuf, "(%s): %s", infn, msg);
|
| 394 |
|
|
error(etyp, msgbuf);
|
| 395 |
|
|
}
|
