Struct GeodesicDome 

pub struct GeodesicDome {
    pub frequency: usize,
    pub radius: f64,
    pub vertices: Vec<V3>,
    pub struts: Vec<(usize, usize)>,
    pub hemisphere: bool,
}

A geodesic dome / sphere approximation.

Uses Class I frequency-n subdivision of an icosahedron to generate the vertex coordinates and strut connectivity. Higher frequency gives a closer approximation to a sphere.

Fields

frequency: usize

Subdivision frequency (1 = icosahedron, 2 = 80 faces, …).

radius: f64

Radius of the circumscribed sphere (m).

vertices: Vec<V3>

Vertex coordinates (on the sphere surface).

struts: Vec<(usize, usize)>

Strut connectivity (pairs of vertex indices).

hemisphere: bool

Whether this is a full sphere or a hemisphere.

Implementations

impl GeodesicDome

pub fn new(frequency: usize, radius: f64, hemisphere: bool) -> Self

Build a geodesic dome of given frequency and radius.

hemisphere trims the lower half of the sphere.

pub fn expected_vertex_count(frequency: usize) -> usize

Expected vertex count for a Class I frequency-n geodesic sphere.

Formula: V = 10n² + 2 (full sphere).

pub fn expected_strut_count(frequency: usize) -> usize

Expected strut count for a Class I frequency-n geodesic sphere.

Formula: E = 30n² (full sphere).

pub fn strut_length_stats(&self) -> (f64, f64, f64)

Strut length statistics: (min, max, mean) in metres.

pub fn verify_sphericity(&self, tol: f64) -> bool

Verify all vertices lie on the sphere within tolerance.

Trait Implementations

impl Clone for GeodesicDome

fn clone(&self) -> GeodesicDome

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GeodesicDome

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.