void calculate_dof(int focal_length, int focus_distance, int av, char *min, char *max) {
float fl = 1.0f * focal_length;
float fd = 1000.0f * focus_distance;
float fn = float_pow(2.0f, ((float)av / 8.0f - 1) / 2.0f); // Precise F-Number = 2^(n/2), 1/8 EV resolution
float cof = 0.019f; // Circle of confusion
// Hyperfocal
float hf = fl + fl * fl / (fn * cof);
float aux = fd * (hf - fl) / 1000.0f;
// Min distance
display_float(min, aux / (hf + fd - 2.0f * fl));
// Max distance
if (hf >= fd)
display_float(max, aux / (hf - fd));
else
sprintf(max, "%s", LP_WORD(L_S_INFINITE));
}
void *
mandel_start(void *arg)
{
float xmin = -2;
float xmax = 1.0;
float ymin = -1.5;
float ymax = 1.5;
struct mandelthr *args = arg;
#if (NEWSSE2)
display_sse2(WIDTH, HEIGHT, xmin, xmax, ymin, ymax, args->yofs, args->ylim);
#elif (SSE2)
display_sse2(WIDTH, HEIGHT, xmin, xmax, ymin, ymax, args->yofs, args->ylim);
#elif (DOUBLE)
display_double(WIDTH, HEIGHT, xmin, xmax, ymin, ymax, args->yofs, args->ylim);
#elif (FLOAT)
display_float(WIDTH, HEIGHT, xmin, xmax, ymin, ymax, args->yofs, args->ylim);
#endif
g_mandel.nthr--;
pthread_exit(NULL);
}
