| 17 |
|
static double logstep; |
| 18 |
|
|
| 19 |
|
|
| 20 |
< |
extern void |
| 20 |
> |
void |
| 21 |
|
hdcompgrid( /* compute derived grid vector and index */ |
| 22 |
< |
register HOLO *hp |
| 22 |
> |
HOLO *hp |
| 23 |
|
) |
| 24 |
|
{ |
| 25 |
|
double d; |
| 26 |
< |
register int i, j; |
| 26 |
> |
int i, j; |
| 27 |
|
/* initialize depth map */ |
| 28 |
|
if (hd_depthmap[0] < 1.) { |
| 29 |
|
d = 1. + .5/DCLIN; |
| 56 |
|
} |
| 57 |
|
|
| 58 |
|
|
| 59 |
< |
extern int |
| 59 |
> |
int |
| 60 |
|
hdbcoord( /* compute beam coordinates from index */ |
| 61 |
|
GCOORD gc[2], /* returned */ |
| 62 |
< |
register HOLO *hp, |
| 63 |
< |
register int i |
| 62 |
> |
HOLO *hp, |
| 63 |
> |
int i |
| 64 |
|
) |
| 65 |
|
{ |
| 66 |
< |
register int j, n; |
| 66 |
> |
int j, n; |
| 67 |
|
int n2, reverse; |
| 68 |
|
GCOORD g2[2]; |
| 69 |
|
/* check range */ |
| 102 |
|
} |
| 103 |
|
|
| 104 |
|
|
| 105 |
< |
extern int |
| 105 |
> |
int |
| 106 |
|
hdbindex( /* compute index from beam coordinates */ |
| 107 |
< |
register HOLO *hp, |
| 108 |
< |
register GCOORD gc[2] |
| 107 |
> |
HOLO *hp, |
| 108 |
> |
GCOORD gc[2] |
| 109 |
|
) |
| 110 |
|
{ |
| 111 |
|
GCOORD g2[2]; |
| 112 |
|
int reverse; |
| 113 |
< |
register int i, j; |
| 113 |
> |
int i, j; |
| 114 |
|
/* check ordering and limits */ |
| 115 |
|
if ( (reverse = gc[0].w > gc[1].w) ) { |
| 116 |
|
*g2 = *(gc+1); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
|
| 137 |
< |
extern void |
| 137 |
> |
void |
| 138 |
|
hdcell( /* compute cell coordinates */ |
| 139 |
< |
register FVECT cp[4], /* returned (may be passed as FVECT cp[2][2]) */ |
| 140 |
< |
register HOLO *hp, |
| 141 |
< |
register GCOORD *gc |
| 139 |
> |
FVECT cp[4], /* returned (may be passed as FVECT cp[2][2]) */ |
| 140 |
> |
HOLO *hp, |
| 141 |
> |
GCOORD *gc |
| 142 |
|
) |
| 143 |
|
{ |
| 144 |
< |
register RREAL *v; |
| 144 |
> |
RREAL *v; |
| 145 |
|
double d; |
| 146 |
|
/* compute common component */ |
| 147 |
|
VCOPY(cp[0], hp->orig); |
| 168 |
|
} |
| 169 |
|
|
| 170 |
|
|
| 171 |
< |
extern int |
| 171 |
> |
int |
| 172 |
|
hdlseg( /* compute line segment for beam */ |
| 173 |
< |
register int lseg[2][3], |
| 174 |
< |
register HOLO *hp, |
| 173 |
> |
int lseg[2][3], |
| 174 |
> |
HOLO *hp, |
| 175 |
|
GCOORD gc[2] |
| 176 |
|
) |
| 177 |
|
{ |
| 178 |
< |
register int k; |
| 178 |
> |
int k; |
| 179 |
|
|
| 180 |
|
for (k = 0; k < 2; k++) { /* compute end points */ |
| 181 |
|
lseg[k][gc[k].w>>1] = gc[k].w&1 ? hp->grid[gc[k].w>>1]-1 : 0 ; |
| 186 |
|
} |
| 187 |
|
|
| 188 |
|
|
| 189 |
< |
extern unsigned int |
| 189 |
> |
unsigned int |
| 190 |
|
hdcode( /* compute depth code for d */ |
| 191 |
|
HOLO *hp, |
| 192 |
|
double d |
| 193 |
|
) |
| 194 |
|
{ |
| 195 |
|
double tl = hp->tlin; |
| 196 |
< |
register long c; |
| 196 |
> |
long c; |
| 197 |
|
|
| 198 |
|
if (d <= 0.) |
| 199 |
|
return(0); |
| 206 |
|
} |
| 207 |
|
|
| 208 |
|
|
| 209 |
< |
extern void |
| 209 |
> |
void |
| 210 |
|
hdgrid( /* compute grid coordinates */ |
| 211 |
|
FVECT gp, /* returned */ |
| 212 |
< |
register HOLO *hp, |
| 212 |
> |
HOLO *hp, |
| 213 |
|
FVECT wp |
| 214 |
|
) |
| 215 |
|
{ |
| 222 |
|
} |
| 223 |
|
|
| 224 |
|
|
| 225 |
< |
extern void |
| 225 |
> |
void |
| 226 |
|
hdworld( /* compute world coordinates */ |
| 227 |
< |
register FVECT wp, |
| 228 |
< |
register HOLO *hp, |
| 227 |
> |
FVECT wp, |
| 228 |
> |
HOLO *hp, |
| 229 |
|
FVECT gp |
| 230 |
|
) |
| 231 |
|
{ |
| 232 |
< |
register double d; |
| 232 |
> |
double d; |
| 233 |
|
|
| 234 |
|
d = gp[0]/hp->grid[0]; |
| 235 |
|
VSUM(wp, hp->orig, hp->xv[0], d); |
| 242 |
|
} |
| 243 |
|
|
| 244 |
|
|
| 245 |
< |
extern double |
| 245 |
> |
double |
| 246 |
|
hdray( /* compute ray within a beam */ |
| 247 |
|
FVECT ro, |
| 248 |
|
FVECT rd, /* returned */ |
| 249 |
|
HOLO *hp, |
| 250 |
|
GCOORD gc[2], |
| 251 |
< |
BYTE r[2][2] |
| 251 |
> |
uby8 r[2][2] |
| 252 |
|
) |
| 253 |
|
{ |
| 254 |
|
FVECT cp[4], p[2]; |
| 255 |
< |
register int i, j; |
| 255 |
> |
int i, j; |
| 256 |
|
double d0, d1; |
| 257 |
|
/* compute entry and exit points */ |
| 258 |
|
for (i = 0; i < 2; i++) { |
| 269 |
|
} |
| 270 |
|
|
| 271 |
|
|
| 272 |
< |
extern double |
| 272 |
> |
double |
| 273 |
|
hdinter( /* compute ray intersection with section */ |
| 274 |
< |
register GCOORD gc[2], /* returned */ |
| 275 |
< |
BYTE r[2][2], /* returned (optional) */ |
| 274 |
> |
GCOORD gc[2], /* returned */ |
| 275 |
> |
uby8 r[2][2], /* returned (optional) */ |
| 276 |
|
double *ed, /* returned (optional) */ |
| 277 |
< |
register HOLO *hp, |
| 277 |
> |
HOLO *hp, |
| 278 |
|
FVECT ro, |
| 279 |
|
FVECT rd /* normalization of rd affects distances */ |
| 280 |
|
) |
| 281 |
|
{ |
| 282 |
|
FVECT p[2], vt; |
| 283 |
|
double d, t0, t1, d0, d1; |
| 284 |
< |
register RREAL *v; |
| 285 |
< |
register int i; |
| 284 |
> |
RREAL *v; |
| 285 |
> |
int i; |
| 286 |
|
/* first, intersect walls */ |
| 287 |
|
gc[0].w = gc[1].w = -1; |
| 288 |
|
t0 = -FHUGE; t1 = FHUGE; |
