33 |
|
#include "view.h" |
34 |
|
#include "random.h" |
35 |
|
#include "paths.h" |
36 |
< |
#include "rtmisc.h" /* myhostname() */ |
36 |
> |
#include "hilbert.h" |
37 |
|
|
38 |
|
|
39 |
|
#define RFTEMPLATE "rfXXXXXX" |
802 |
|
} |
803 |
|
|
804 |
|
static int |
805 |
< |
pixnumber( /* compute pixel index (brushed) */ |
805 |
> |
pixnumber( /* compute pixel index (screen door) */ |
806 |
|
int x, |
807 |
|
int y, |
808 |
|
int xres, |
809 |
|
int yres |
810 |
|
) |
811 |
|
{ |
812 |
< |
x -= y; |
813 |
< |
while (x < 0) |
814 |
< |
x += xres; |
815 |
< |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
812 |
> |
unsigned nbits = 0; |
813 |
> |
bitmask_t coord[2]; |
814 |
> |
|
815 |
> |
if (xres < yres) xres = yres; |
816 |
> |
while (xres > 0) { |
817 |
> |
xres >>= 1; |
818 |
> |
++nbits; |
819 |
> |
} |
820 |
> |
coord[0] = x; coord[1] = y; |
821 |
> |
return ((int)hilbert_c2i(2, nbits, coord)); |
822 |
|
} |