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"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"16",
NULL
};
char *iso_array[] = {
"50",
"100",
"200",
"400",
"800",
"1600",
"3200",
NULL
};
char *shutter_array[] = {
"OVER",
"1/1000",
"1/500",
"1/250",
"1/125",
"1/60",
"1/30",
"1/15",
"1/8",
"1/4",
"1/2",
"1",
"UNDER",
NULL
};
char *aperture_array[] = {
"UNDER",
"f/1.4",
"f/2",
"f/2.8",
"f/4",
"f/5.6",
"f/8",
"f/11",
"f/16",
"OVER",
NULL
};
ITEM **exposure_items;
ITEM **iso_items;
ITEM **shutter_items;
ITEM **aperture_items;
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void remove_menu(ITEM **items, MENU *men, int n);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
MENU *add_menu(char **array, ITEM **items, int n);
WINDOW *add_window(int xpos, char *title);
int exposure(int iso);
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu);
int nearest_match(double x, int menu, int n_array);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";
char iso_sel[9] = "";
char shutter_sel[9] = "";
char aperture_sel[9] = "";
int selection_counter = 1;
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menu_driver(shutter_menu, REQ_SCR_UPAGE);
menu_driver(shutter_menu, REQ_SCR_DPAGE);
/* There is probably a nicer way to format the below */
set_menu_pattern(
shutter_menu,
shutter_array[nearest_match(
shutter(exposure(atoi(iso_sel)), strtod(aperture_sel_, NULL)),
3
3,
n_shutter
)]
);
menu_driver(shutter_menu, REQ_DOWN_ITEM);
menu_driver(shutter_menu, REQ_UP_ITEM);
wrefresh(shutter_win);
}
if (strcmp("", aperture_sel) == 0) {
menu_driver(aperture_menu, REQ_SCR_UPAGE);
menu_driver(aperture_menu, REQ_SCR_DPAGE);
set_menu_pattern(
aperture_menu,
aperture_array[nearest_match(
aperture(exposure(atoi(iso_sel)), fraction_to_double(shutter_sel)),
4
4,
n_aperture
)]
);
menu_driver(aperture_menu, REQ_DOWN_ITEM);
menu_driver(aperture_menu, REQ_UP_ITEM);
wrefresh(aperture_win);
}
/* clear the selections for next time */
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}
double aperture (int exposure, double shutter) {
/* EV = log2 (N^2/t) */
return sqrt(pow(2, exposure) * shutter);
}
int nearest_match (double x, int menu) {
int nearest_match (double x, int menu, int n_array) {
/* Need to search array for closest match */
int n;
int diff_idx = 0;
int diff_idx = 1;
char array_value_str[9];
double array_value_db;
double diff;
/* Need a starting value for difference */
switch(menu) {
case 3:
array_value_db = fraction_to_double(shutter_array[0]);
array_value_db = fraction_to_double(shutter_array[1]);
break;
case 4:
strncpy(array_value_str, aperture_array[0]+2, 4);
strncpy(array_value_str, aperture_array[1]+2, 4);
array_value_db = strtod(array_value_str, NULL);
break;
}
diff = fabs(array_value_db - x);
/* lots of repetition here but pointers to arrays seem to be a bad thing */
/* Could do from n = 3 (2 above) until != under/over
* but also need to do something like if diff is more than twice max/min then under/over */
switch(menu) {
case 3:
for ( n = 1; shutter_array[n] != NULL; ++n ) {
for ( n = 2; n < n_array-2; ++n ) {
array_value_db = fraction_to_double(shutter_array[n]);
if (fabs(array_value_db - x) < diff) {
diff_idx = n;
diff = fabs(array_value_db - x);
}
}
/* Check if at extremities and then if under/over exposed */
if (diff_idx == 1) {
if (diff >= fraction_to_double(shutter_array[1])/2) { /* diff is greater than diff of next one down minus max/min */
diff_idx = 0;
}
}
if (diff_idx == n_array-3) {
if (diff >= fraction_to_double(shutter_array[n_array-3])*2) {
diff_idx = n_array-2;
}
}
break;
case 4:
for ( n = 1; aperture_array[n] != NULL; ++n ) {
for ( n = 2; n < n_array-2; ++n ) {
strncpy(array_value_str, aperture_array[n]+2, 4);
array_value_db = strtod(array_value_str, NULL);
if (fabs(array_value_db - x) < diff) {
diff_idx = n;
diff = fabs(array_value_db - x);
}
}
/* Apertures similarly. Although progression is fiddlier.*/
if (diff_idx == 1) {
strncpy(array_value_str, aperture_array[1]+2, 4);
array_value_db = strtod(array_value_str, NULL);
if (diff >= array_value_db/sqrt(2.0)) { /* diff is greater than diff of next one down minus max/min */
diff_idx = 0;
}
}
if (diff_idx == n_array-3) {
strncpy(array_value_str, aperture_array[n_array-3]+2, 4);
array_value_db = strtod(array_value_str, NULL);
if (diff >= array_value_db*sqrt(2.0)) {
diff_idx = n_array-2;
}
}
break;
}
return diff_idx;
}
double fraction_to_double(char *fraction) {
double fraction_as_db;
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