modsphere;modt4010a1;usecrate::common::Angle;pubusesphere::Sphere;pubuset4010a1::T4010A1;/// A trait representing the directivity of ultrasound transducer.
pubtraitDirectivity{/// Calculates the directivity based on the given angle.
////// # Arguments
////// * `theta` - The angle between the axial direction and the target direction.
#[must_use]fndirectivity(theta: Angle)->f32;}