| 1 |
– |
/* Copyright (c) 1994 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* pf2.c - routines used by pfilt. |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
< |
#include <stdio.h> |
| 12 |
< |
|
| 13 |
< |
#include <math.h> |
| 14 |
< |
|
| 8 |
> |
#include "pfilt.h" |
| 9 |
|
#include "random.h" |
| 10 |
|
|
| 17 |
– |
#include "color.h" |
| 18 |
– |
|
| 19 |
– |
#define PI 3.14159265359 |
| 20 |
– |
|
| 21 |
– |
#define FTINY (1e-6) |
| 22 |
– |
|
| 23 |
– |
extern int nrows, ncols; /* number of rows and columns for output */ |
| 24 |
– |
|
| 25 |
– |
extern int xres, yres; /* x and y resolution */ |
| 26 |
– |
|
| 27 |
– |
extern int avghot; /* true means average in avgbrt spots */ |
| 28 |
– |
|
| 29 |
– |
extern double hotlvl; /* brightness considered "hot" */ |
| 30 |
– |
|
| 31 |
– |
extern int npts; /* # of points for stars */ |
| 32 |
– |
|
| 33 |
– |
extern double spread; /* spread for star points */ |
| 34 |
– |
|
| 35 |
– |
extern char *progname; |
| 36 |
– |
|
| 37 |
– |
extern COLOR exposure; /* exposure for frame */ |
| 38 |
– |
|
| 39 |
– |
extern double (*ourbright)(); /* brightness calculation function */ |
| 40 |
– |
|
| 11 |
|
#define AVGLVL 0.5 /* target mean brightness */ |
| 12 |
|
|
| 13 |
|
double avgbrt; /* average picture brightness */ |
| 24 |
|
|
| 25 |
|
double sprdfact; /* computed spread factor */ |
| 26 |
|
|
| 27 |
+ |
static void starpoint(SCOLOR fcol, int x, int y, HOTPIX *hp); |
| 28 |
|
|
| 29 |
< |
pass1init() /* prepare for first pass */ |
| 29 |
> |
|
| 30 |
> |
void |
| 31 |
> |
pass1init(void) /* prepare for first pass */ |
| 32 |
|
{ |
| 33 |
|
avgbrt = 0.0; |
| 34 |
|
npix = 0; |
| 36 |
|
} |
| 37 |
|
|
| 38 |
|
|
| 39 |
< |
pass1default() /* for single pass */ |
| 39 |
> |
void |
| 40 |
> |
pass1default(void) /* for single pass */ |
| 41 |
|
{ |
| 42 |
|
avgbrt = AVGLVL; |
| 43 |
|
npix = 1; |
| 45 |
|
} |
| 46 |
|
|
| 47 |
|
|
| 48 |
< |
pass1scan(scan, y) /* process first pass scanline */ |
| 49 |
< |
register COLOR *scan; |
| 50 |
< |
int y; |
| 48 |
> |
void |
| 49 |
> |
pass1scan( /* process first pass scanline */ |
| 50 |
> |
COLORV *scan, |
| 51 |
> |
int y |
| 52 |
> |
) |
| 53 |
|
{ |
| 78 |
– |
extern char *malloc(); |
| 54 |
|
double cbrt; |
| 55 |
< |
register int x; |
| 56 |
< |
register HOTPIX *hp; |
| 55 |
> |
int x; |
| 56 |
> |
HOTPIX *hp; |
| 57 |
|
|
| 58 |
|
for (x = 0; x < xres; x++) { |
| 59 |
|
|
| 60 |
< |
cbrt = (*ourbright)(scan[x]); |
| 60 |
> |
cbrt = (*ourbright)(scan+x*NCSAMP); |
| 61 |
|
|
| 62 |
|
if (cbrt <= 0) |
| 63 |
|
continue; |
| 73 |
|
progname); |
| 74 |
|
quit(1); |
| 75 |
|
} |
| 76 |
< |
copycolor(hp->val, scan[x]); |
| 76 |
> |
scolor_color(hp->val, scan+x*NCSAMP); |
| 77 |
|
hp->x = x; |
| 78 |
|
hp->y = y; |
| 79 |
< |
hp->slope = tan(PI*(0.5-(random()%npts+0.5)/npts)); |
| 79 |
> |
hp->slope = ttan(PI*(0.5-(irandom(npts)+0.5)/npts)); |
| 80 |
|
hp->next = head; |
| 81 |
|
head = hp; |
| 82 |
|
} |
| 84 |
|
} |
| 85 |
|
|
| 86 |
|
|
| 87 |
< |
pass2init() /* prepare for final pass */ |
| 87 |
> |
void |
| 88 |
> |
pass2init(void) /* prepare for final pass */ |
| 89 |
|
{ |
| 90 |
|
if (!npix) { |
| 91 |
|
fprintf(stderr, "%s: picture too dark or too bright\n", |
| 96 |
|
|
| 97 |
|
scalecolor(exposure, AVGLVL/avgbrt); |
| 98 |
|
|
| 99 |
< |
sprdfact = spread / (hotlvl * (*ourbright)(exposure)) |
| 99 |
> |
sprdfact = spread / (hotlvl * bright(exposure)) |
| 100 |
|
* ((double)xres*xres + (double)yres*yres) / 4.0; |
| 101 |
|
} |
| 102 |
|
|
| 103 |
|
|
| 104 |
< |
pass2scan(scan, y) /* process final pass scanline */ |
| 105 |
< |
register COLOR *scan; |
| 106 |
< |
int y; |
| 104 |
> |
void |
| 105 |
> |
pass2scan( /* process final pass scanline */ |
| 106 |
> |
COLORV *scan, |
| 107 |
> |
int y |
| 108 |
> |
) |
| 109 |
|
{ |
| 110 |
|
int xmin, xmax; |
| 111 |
< |
register int x; |
| 112 |
< |
register HOTPIX *hp; |
| 111 |
> |
int x; |
| 112 |
> |
HOTPIX *hp; |
| 113 |
|
|
| 114 |
|
for (hp = head; hp != NULL; hp = hp->next) { |
| 115 |
|
if (hp->slope > FTINY) { |
| 130 |
|
if (xmax >= xres) |
| 131 |
|
xmax = xres-1; |
| 132 |
|
for (x = xmin; x <= xmax; x++) |
| 133 |
< |
starpoint(scan[x], x, y, hp); |
| 133 |
> |
starpoint(scan+x*NCSAMP, x, y, hp); |
| 134 |
|
} |
| 135 |
|
for (x = 0; x < xres; x++) |
| 136 |
< |
multcolor(scan[x], exposure); |
| 136 |
> |
smultcolor(scan+x*NCSAMP, exposure); |
| 137 |
|
} |
| 138 |
|
|
| 139 |
|
|
| 140 |
< |
starpoint(fcol, x, y, hp) /* pixel is on the star's point */ |
| 141 |
< |
COLOR fcol; |
| 142 |
< |
int x, y; |
| 143 |
< |
register HOTPIX *hp; |
| 140 |
> |
static void |
| 141 |
> |
starpoint( /* pixel is on the star's point */ |
| 142 |
> |
SCOLOR fcol, |
| 143 |
> |
int x, |
| 144 |
> |
int y, |
| 145 |
> |
HOTPIX *hp |
| 146 |
> |
) |
| 147 |
|
{ |
| 148 |
|
COLOR ctmp; |
| 149 |
|
double d2; |
| 155 |
|
return; |
| 156 |
|
copycolor(ctmp, hp->val); |
| 157 |
|
scalecolor(ctmp, d2); |
| 158 |
< |
addcolor(fcol, ctmp); |
| 158 |
> |
saddcolor(fcol, ctmp); |
| 159 |
|
} else if (d2 > FTINY) { |
| 160 |
< |
addcolor(fcol, hp->val); |
| 160 |
> |
saddcolor(fcol, hp->val); |
| 161 |
|
} |
| 162 |
|
} |
