Function point_source_3d 

pub fn point_source_3d(
    wave_number: f64,
    source: Point,
    points: Vec<Point>,
) -> AnalyticalSolution

Point source (monopole): G(r) = exp(ikr)/(4πr)

Green’s function for the Helmholtz equation in 3D.

Arguments

• wave_number - k
• source - Source location
• points - Field points