Function spice_sys::fovray_c

pub unsafe extern "C" fn fovray_c(
    inst: *const c_char, 
    raydir: *const c_double, 
    rframe: *const c_char, 
    abcorr: *const c_char, 
    obsrvr: *const c_char, 
    et: *const c_double, 
    visible: *mut SpiceBoolean
)

determines if a specified ray is within the FOV of a specified instrument at a given time.