static void wave_table_generate(void)
{
int i;
for (i=0;i<256;++i)
{
wave_array[i] = (unsigned char)((WAV_AMP
* (fp14_sin((i * 360 * plasma_frequency) / 256))) / 16384);
}
}
ANALOG_MINUTE_RADIUS(screen, round)
#define ANALOG_MINUTE_RADIUS(screen, round) \
(round?MIN(screen->getheight()/2 -10, screen->getwidth()/2 -10):screen->getheight()/2)
#define ANALOG_HOUR_RADIUS(screen, round) \
(2*ANALOG_MINUTE_RADIUS(screen, round)/3)
#define HOUR_ANGLE(hour, minute, second) (30*(hour) +(minute)/2)
#define MINUTE_ANGLE(minute, second) (6*(minute)+(second)/10)
#define SECOND_ANGLE(second) (6 * (second))
/* Note that the given angle's origin is midday and not 3 o'clock */
static void polar_to_cartesian(int a, int r, int* x, int* y)
{
#if CONFIG_LCD == LCD_SSD1815
/* Correct non-square pixel aspect of archos recorder LCD */
*x = (fp14_sin(a) * 5 / 4 * r) >> 14;
#else
*x = (fp14_sin(a) * r) >> 14;
#endif
*y = (fp14_sin(a-90) * r) >> 14;
}
static void polar_to_cartesian_screen_centered(struct screen * display,
int a, int r, int* x, int* y)
{
polar_to_cartesian(a, r, x, y);
*x+=display->getwidth()/2;
*y+=display->getheight()/2;
}
static void angle_to_square(int square_width, int square_height,