| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: rhcopy.c,v 3.23 2004/01/02 11:42:01 schorsch Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* Copy data into a holodeck file
|
| 6 |
*/
|
| 7 |
|
| 8 |
#include "platform.h"
|
| 9 |
#include "rterror.h"
|
| 10 |
#include "holo.h"
|
| 11 |
#include "view.h"
|
| 12 |
|
| 13 |
#ifndef BKBSIZE
|
| 14 |
#define BKBSIZE 256 /* beam clump size (kilobytes) */
|
| 15 |
#endif
|
| 16 |
|
| 17 |
int checkdepth = 1; /* check depth (!-d option)? */
|
| 18 |
int checkrepeats = 0; /* check for repeats (-u option)? */
|
| 19 |
int frompicz; /* input from pictures & depth-buffers? */
|
| 20 |
int noutsects; /* number of output sections */
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| 21 |
char obstr, unobstr; /* flag pointer values */
|
| 22 |
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| 23 |
char *progname; /* global argv[0] */
|
| 24 |
|
| 25 |
struct phead {
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| 26 |
VIEW vw;
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| 27 |
double expos;
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| 28 |
short gotview;
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| 29 |
short badfmt;
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| 30 |
short altprims;
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| 31 |
};
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| 32 |
static int openholo(char *fname, int append);
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| 33 |
static void addray(FVECT ro, FVECT rd, double d, COLR cv);
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| 34 |
static gethfunc holheadline;
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| 35 |
static int bpcmp(const void *b1p, const void *b2p);
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| 36 |
static int addclump(HOLO *hp, int *bq, int nb);
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| 37 |
static void addholo(char *hdf);
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| 38 |
static gethfunc picheadline;
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| 39 |
static void addpicz(char *pcf, char *zbf);
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| 40 |
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| 41 |
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| 42 |
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| 43 |
int
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| 44 |
main(
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| 45 |
int argc,
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| 46 |
char *argv[]
|
| 47 |
)
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| 48 |
{
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| 49 |
int i;
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| 50 |
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| 51 |
progname = argv[0];
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| 52 |
frompicz = -1;
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| 53 |
for (i = 2; i < argc && argv[i][0] == '-'; i++)
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| 54 |
switch (argv[i][1]) {
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| 55 |
case 'u':
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checkrepeats = 1;
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| 57 |
break;
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| 58 |
case 'd':
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checkdepth = 0;
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break;
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| 61 |
case 'h':
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frompicz = 0;
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break;
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| 64 |
case 'p':
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frompicz = 1;
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break;
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default:
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goto userr;
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}
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| 70 |
if (i >= argc || frompicz < 0)
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goto userr;
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| 72 |
if (frompicz && (argc-i)%2)
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| 73 |
goto userr;
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| 74 |
noutsects = openholo(argv[1], 1);
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| 75 |
if (frompicz) {
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| 76 |
for ( ; i < argc; i += 2)
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addpicz(argv[i], argv[i+1]);
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| 78 |
} else {
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| 79 |
if (BKBSIZE*1024*1.5 > hdcachesize)
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hdcachesize = BKBSIZE*1024*1.5;
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for ( ; i < argc; i++)
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addholo(argv[i]);
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}
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quit(0);
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userr:
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fprintf(stderr, "Usage: %s output.hdk [-u][-d] -h inp1.hdk ..\n",
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progname);
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fprintf(stderr, " Or: %s output.hdk [-u][-d] -p inp1.hdr inp1.zbf ..\n",
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| 89 |
progname);
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exit(1);
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| 91 |
}
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| 92 |
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| 93 |
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#define H_BADF 01
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#define H_OBST 02
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#define H_OBSF 04
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| 97 |
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static int
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holheadline( /* check holodeck header line */
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register char *s,
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void *vhf
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| 102 |
)
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{
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char fmt[32];
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int *hf = vhf;
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if (formatval(fmt, s)) {
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| 108 |
if (strcmp(fmt, HOLOFMT))
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*hf |= H_BADF;
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else
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*hf &= ~H_BADF;
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return(0);
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}
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| 114 |
if (!strncmp(s, "OBSTRUCTIONS=", 13)) {
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s += 13;
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while (*s == ' ') s++;
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if ((*s == 't') | (*s == 'T'))
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*hf |= H_OBST;
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else if ((*s == 'f') | (*s == 'F'))
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*hf |= H_OBSF;
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else
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error(WARNING, "bad OBSTRUCTIONS value in holodeck");
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return(0);
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}
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return(0);
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}
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int
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openholo( /* open existing holodeck file for i/o */
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char *fname,
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int append
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)
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{
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FILE *fp;
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int fd;
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int hflags = 0;
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long nextloc;
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int n;
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/* open holodeck file */
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if ((fp = fopen(fname, append ? "r+" : "r")) == NULL) {
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sprintf(errmsg, "cannot open \"%s\" for %s", fname,
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append ? "appending" : "reading");
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error(SYSTEM, errmsg);
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}
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/* check header and magic number */
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if (getheader(fp, holheadline, &hflags) < 0 ||
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hflags&H_BADF || getw(fp) != HOLOMAGIC) {
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sprintf(errmsg, "file \"%s\" not in holodeck format", fname);
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error(USER, errmsg);
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}
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fd = dup(fileno(fp)); /* dup file handle */
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nextloc = ftell(fp); /* get stdio position */
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fclose(fp); /* done with stdio */
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for (n = 0; nextloc > 0L; n++) { /* initialize each section */
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lseek(fd, (off_t)nextloc, SEEK_SET);
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read(fd, (char *)&nextloc, sizeof(nextloc));
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hdinit(fd, NULL)->priv = hflags&H_OBST ? &obstr :
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hflags&H_OBSF ? &unobstr : (char *)NULL;
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}
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return(n);
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}
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#undef H_BADF
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#undef H_OBST
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#undef H_OBSF
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| 168 |
void
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addray( /* add a ray to our output holodeck */
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FVECT ro,
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FVECT rd,
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double d,
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COLR cv
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)
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{
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int sn, bi, n;
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register HOLO *hp;
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| 178 |
GCOORD gc[2];
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| 179 |
BYTE rr[2][2];
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BEAM *bp;
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double d0, d1;
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unsigned dc;
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register RAYVAL *rv;
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/* check each output section */
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| 185 |
for (sn = noutsects; sn--; ) {
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hp = hdlist[sn];
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d0 = hdinter(gc, rr, &d1, hp, ro, rd);
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| 188 |
if (d <= d0 || d1 < -0.001)
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continue; /* missed section */
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| 190 |
if (checkdepth) { /* check depth */
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if (hp->priv == &obstr && d0 < -0.001)
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continue; /* ray starts too late */
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| 193 |
if (hp->priv == &unobstr && d < 0.999*d1)
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continue; /* ray ends too soon */
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}
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dc = hdcode(hp, d-d0);
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| 197 |
bi = hdbindex(hp, gc); /* check for duplicates */
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| 198 |
if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) {
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for (n = bp->nrm, rv = hdbray(bp); n--; rv++)
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| 200 |
if ((hp->priv != NULL || rv->d == dc) &&
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rv->r[0][0] == rr[0][0] &&
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rv->r[0][1] == rr[0][1] &&
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rv->r[1][0] == rr[1][0] &&
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rv->r[1][1] == rr[1][1])
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break;
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| 206 |
if (n >= 0)
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continue; /* found a matching ray */
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| 208 |
}
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rv = hdnewrays(hp, bi, 1);
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rv->d = dc;
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rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1];
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rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1];
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| 213 |
copycolr(rv->v, cv);
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}
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}
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| 217 |
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| 218 |
static BEAMI *beamdir;
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| 219 |
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| 220 |
static int
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bpcmp( /* compare beam positions on disk */
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| 222 |
const void *b1p,
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| 223 |
const void *b2p
|
| 224 |
)
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| 225 |
{
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| 226 |
register off_t pdif = beamdir[*(int*)b1p].fo - beamdir[*(int*)b2p].fo;
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| 228 |
if (pdif > 0L) return(1);
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if (pdif < 0L) return(-1);
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| 230 |
return(0);
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}
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static int
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addclump( /* transfer the given clump and free */
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HOLO *hp,
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int *bq,
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int nb
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| 238 |
)
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| 239 |
{
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| 240 |
GCOORD gc[2];
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| 241 |
FVECT ro, rd;
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| 242 |
double d;
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| 243 |
int i;
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| 244 |
register int k;
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| 245 |
register BEAM *bp;
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| 246 |
/* sort based on file position */
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| 247 |
beamdir = hp->bi;
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qsort((char *)bq, nb, sizeof(*bq), bpcmp);
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/* transfer each beam */
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| 250 |
for (i = 0; i < nb; i++) {
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| 251 |
bp = hdgetbeam(hp, bq[i]);
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| 252 |
hdbcoord(gc, hp, bq[i]);
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/* add each ray to output */
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| 254 |
for (k = bp->nrm; k--; ) {
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| 255 |
d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r);
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if (hp->priv == &unobstr)
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VSUM(ro, ro, rd, d);
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| 258 |
else
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d = 0.;
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| 260 |
d = hddepth(hp, hdbray(bp)[k].d) - d;
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| 261 |
addray(ro, rd, d, hdbray(bp)[k].v);
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| 262 |
}
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| 263 |
hdfreebeam(hp, bq[i]); /* free the beam */
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| 264 |
}
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| 265 |
return(0);
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| 266 |
}
|
| 267 |
|
| 268 |
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| 269 |
void
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| 270 |
addholo( /* add a holodeck file */
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| 271 |
char *hdf
|
| 272 |
)
|
| 273 |
{
|
| 274 |
int fd;
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| 275 |
/* open the holodeck for reading */
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| 276 |
openholo(hdf, 0);
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| 277 |
fd = hdlist[noutsects]->fd; /* remember the file handle */
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| 278 |
while (hdlist[noutsects] != NULL) { /* load each section */
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| 279 |
/* clump the beams */
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| 280 |
clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump);
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| 281 |
hddone(hdlist[noutsects]); /* free the section */
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| 282 |
}
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| 283 |
close(fd); /* close input file */
|
| 284 |
hdflush(NULL); /* flush output */
|
| 285 |
}
|
| 286 |
|
| 287 |
|
| 288 |
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| 289 |
static int
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| 290 |
picheadline( /* process picture header line */
|
| 291 |
char *s,
|
| 292 |
void *vph
|
| 293 |
)
|
| 294 |
{
|
| 295 |
char fmt[32];
|
| 296 |
struct phead *ph = vph;
|
| 297 |
|
| 298 |
if (formatval(fmt, s)) {
|
| 299 |
ph->badfmt = strcmp(fmt, COLRFMT);
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| 300 |
return(0);
|
| 301 |
}
|
| 302 |
if (isprims(s)) {
|
| 303 |
ph->altprims++; /* don't want to deal with this */
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| 304 |
return(0);
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| 305 |
}
|
| 306 |
if (isexpos(s)) {
|
| 307 |
ph->expos *= exposval(s);
|
| 308 |
return(0);
|
| 309 |
}
|
| 310 |
if (isview(s)) {
|
| 311 |
ph->gotview += sscanview(&ph->vw, s);
|
| 312 |
return(0);
|
| 313 |
}
|
| 314 |
return(0);
|
| 315 |
}
|
| 316 |
|
| 317 |
|
| 318 |
void
|
| 319 |
addpicz( /* add a picture + depth-buffer */
|
| 320 |
char *pcf,
|
| 321 |
char *zbf
|
| 322 |
)
|
| 323 |
{
|
| 324 |
FILE *pfp;
|
| 325 |
int zfd;
|
| 326 |
COLR *cscn;
|
| 327 |
float *zscn;
|
| 328 |
struct phead phd;
|
| 329 |
int eshft;
|
| 330 |
double emult;
|
| 331 |
RESOLU prs;
|
| 332 |
RREAL vl[2];
|
| 333 |
FVECT ro, rd;
|
| 334 |
double aftd;
|
| 335 |
COLOR ctmp;
|
| 336 |
int j;
|
| 337 |
register int i;
|
| 338 |
/* open files */
|
| 339 |
if ((pfp = fopen(pcf, "r")) == NULL) {
|
| 340 |
sprintf(errmsg, "cannot open picture file \"%s\"", pcf);
|
| 341 |
error(SYSTEM, pcf);
|
| 342 |
}
|
| 343 |
if ((zfd = open(zbf, O_RDONLY)) < 0) {
|
| 344 |
sprintf(errmsg, "cannot open depth file \"%s\"", zbf);
|
| 345 |
error(SYSTEM, pcf);
|
| 346 |
}
|
| 347 |
/* load picture header */
|
| 348 |
phd.vw = stdview;
|
| 349 |
phd.expos = 1.0;
|
| 350 |
phd.badfmt = phd.gotview = phd.altprims = 0;
|
| 351 |
if (getheader(pfp, picheadline, &phd) < 0 ||
|
| 352 |
phd.badfmt || !fgetsresolu(&prs, pfp)) {
|
| 353 |
sprintf(errmsg, "bad format for picture file \"%s\"", pcf);
|
| 354 |
error(USER, errmsg);
|
| 355 |
}
|
| 356 |
if (!phd.gotview || setview(&phd.vw) != NULL) {
|
| 357 |
sprintf(errmsg, "missing/illegal view in picture \"%s\"",
|
| 358 |
pcf);
|
| 359 |
error(USER, errmsg);
|
| 360 |
}
|
| 361 |
if (phd.altprims) {
|
| 362 |
sprintf(errmsg, "ignoring primary values in picture \"%s\"",
|
| 363 |
pcf);
|
| 364 |
error(WARNING, errmsg);
|
| 365 |
}
|
| 366 |
/* figure out what to do about exposure */
|
| 367 |
if ((phd.expos < 0.99) | (phd.expos > 1.01)) {
|
| 368 |
emult = -log(phd.expos)/log(2.);
|
| 369 |
eshft = emult >= 0. ? emult+.5 : emult-.5;
|
| 370 |
emult -= (double)eshft;
|
| 371 |
if ((emult <= 0.01) & (emult >= -0.01))
|
| 372 |
emult = -1.;
|
| 373 |
else {
|
| 374 |
emult = 1./phd.expos;
|
| 375 |
eshft = 0;
|
| 376 |
}
|
| 377 |
} else {
|
| 378 |
emult = -1.;
|
| 379 |
eshft = 0;
|
| 380 |
}
|
| 381 |
/* allocate buffers */
|
| 382 |
cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR));
|
| 383 |
zscn = (float *)malloc(scanlen(&prs)*sizeof(float));
|
| 384 |
if ((cscn == NULL) | (zscn == NULL))
|
| 385 |
error(SYSTEM, "out of memory in addpicz");
|
| 386 |
/* read and process each scanline */
|
| 387 |
for (j = 0; j < numscans(&prs); j++) {
|
| 388 |
i = scanlen(&prs); /* read colrs */
|
| 389 |
if (freadcolrs(cscn, i, pfp) < 0) {
|
| 390 |
sprintf(errmsg, "error reading picture \"%s\"", pcf);
|
| 391 |
error(USER, errmsg);
|
| 392 |
}
|
| 393 |
if (eshft) /* shift exposure */
|
| 394 |
shiftcolrs(cscn, i, eshft);
|
| 395 |
i *= sizeof(float); /* read depth */
|
| 396 |
if (read(zfd, (char *)zscn, i) != i) {
|
| 397 |
sprintf(errmsg, "error reading depth file \"%s\"", zbf);
|
| 398 |
error(USER, errmsg);
|
| 399 |
}
|
| 400 |
for (i = scanlen(&prs); i--; ) { /* do each pixel */
|
| 401 |
pix2loc(vl, &prs, i, j);
|
| 402 |
aftd = viewray(ro, rd, &phd.vw, vl[0], vl[1]);
|
| 403 |
if (aftd < -FTINY)
|
| 404 |
continue; /* off view */
|
| 405 |
if (aftd > FTINY && zscn[i] > aftd)
|
| 406 |
continue; /* aft clipped */
|
| 407 |
if (emult > 0.) { /* whatta pain */
|
| 408 |
colr_color(ctmp, cscn[i]);
|
| 409 |
scalecolor(ctmp, emult);
|
| 410 |
setcolr(cscn[i], colval(ctmp,RED),
|
| 411 |
colval(ctmp,GRN), colval(ctmp,BLU));
|
| 412 |
}
|
| 413 |
addray(ro, rd, (double)zscn[i], cscn[i]);
|
| 414 |
}
|
| 415 |
}
|
| 416 |
/* write output and free beams */
|
| 417 |
hdflush(NULL);
|
| 418 |
/* clean up */
|
| 419 |
free((void *)cscn);
|
| 420 |
free((void *)zscn);
|
| 421 |
fclose(pfp);
|
| 422 |
close(zfd);
|
| 423 |
}
|
| 424 |
|
| 425 |
|
| 426 |
void
|
| 427 |
eputs( /* put error message to stderr */
|
| 428 |
register char *s
|
| 429 |
)
|
| 430 |
{
|
| 431 |
static int midline = 0;
|
| 432 |
|
| 433 |
if (!*s)
|
| 434 |
return;
|
| 435 |
if (!midline++) { /* prepend line with program name */
|
| 436 |
fputs(progname, stderr);
|
| 437 |
fputs(": ", stderr);
|
| 438 |
}
|
| 439 |
fputs(s, stderr);
|
| 440 |
if (s[strlen(s)-1] == '\n') {
|
| 441 |
fflush(stderr);
|
| 442 |
midline = 0;
|
| 443 |
}
|
| 444 |
}
|
| 445 |
|
| 446 |
|
| 447 |
void
|
| 448 |
quit( /* exit the program gracefully */
|
| 449 |
int code
|
| 450 |
)
|
| 451 |
{
|
| 452 |
hdsync(NULL, 1); /* write out any buffered data */
|
| 453 |
exit(code);
|
| 454 |
}
|
