| 5 |
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* Rendering routines for rhpict. |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
+ |
#include <string.h> |
| 9 |
+ |
|
| 10 |
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#include "holo.h" |
| 11 |
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#include "view.h" |
| 12 |
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#include "random.h" |
| 37 |
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#define CLR4(f,i) FL4OP(f,i,&=~) |
| 38 |
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#define TGL4(f,i) FL4OP(f,i,^=) |
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#define FL4NELS(n) (((n)+0x1f)>>5) |
| 40 |
< |
#define CLR4ALL(f,n) bzero((char *)(f),FL4NELS(n)*sizeof(int32)) |
| 40 |
> |
#define CLR4ALL(f,n) memset((char *)(f),'\0',FL4NELS(n)*sizeof(int32)) |
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#endif |
| 42 |
|
|
| 43 |
|
static int32 *pixFlags; /* pixel occupancy flags */ |
| 53 |
|
extern int hres, vres; /* current horizontal and vertical res. */ |
| 54 |
|
|
| 55 |
|
|
| 56 |
+ |
void |
| 57 |
|
pixBeam(bp, hb) /* render a particular beam */ |
| 58 |
|
BEAM *bp; |
| 59 |
|
register HDBEAMI *hb; |
| 301 |
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nd[NNEIGH-1] = MAXRAD2; |
| 302 |
|
for (hoff = 0; hoff < hres; hoff = (hoff<=0) - hoff) { |
| 303 |
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h2 = h + hoff; |
| 304 |
< |
if (h2 < 0 | h2 >= hres) |
| 304 |
> |
if ((h2 < 0) | (h2 >= hres)) |
| 305 |
|
continue; |
| 306 |
|
if ((h2-h)*(h2-h) >= nd[NNEIGH-1]) |
| 307 |
|
break; |
| 308 |
|
for (n = 0; n < NNEIGH && rnl[h2][n] < NINF; n++) { |
| 309 |
|
d = (h2-h)*(h2-h) + (v-rnl[h2][n])*(v-rnl[h2][n]); |
| 310 |
< |
if (d == 0 | d >= nd[NNEIGH-1]) |
| 310 |
> |
if ((d == 0) | (d >= nd[NNEIGH-1])) |
| 311 |
|
continue; |
| 312 |
|
if (nn < NNEIGH) /* insert neighbor */ |
| 313 |
|
nn++; |
