Struct AmrtTree 

pub struct AmrtTree {
    pub nodes: Vec<AmrtNode>,
    pub max_level: usize,
    pub domain: [f64; 6],
}

Oct-tree AMR data structure.

Manages a spatially recursive oct-tree where each node can be refined into 8 children. Nodes are stored in a flat Vec for cache-friendly traversal.

Fields

nodes: Vec<AmrtNode>

Flat storage of all nodes.

max_level: usize

Maximum allowed refinement level.

domain: [f64; 6]

Domain bounds \[x_min, y_min, z_min, x_max, y_max, z_max\].

Implementations

impl AmrtTree

pub fn new(domain: [f64; 6], max_level: usize) -> Self

Create a new empty oct-tree.

pub fn init_root(&mut self)

Initialise the tree with a single root node at level 0.

pub fn refine(&mut self, node_idx: usize) -> bool

Refine the leaf at node_idx into 8 children.

Returns false if the node is already at max_level or is not a leaf.

pub fn coarsen(&mut self, parent_idx: usize) -> bool

Coarsen a set of 8 sibling leaves back to their parent.

Returns false if any sibling is not a leaf.

pub fn leaf_count(&self) -> usize

Count active (non-deleted) leaf nodes.

pub fn max_active_level(&self) -> usize

Depth of the tree (maximum level among all active leaves).

pub fn cell_size_at(&self, level: usize) -> [f64; 3]

Physical cell size at a given refinement level.

pub fn node_centre(&self, node_idx: usize) -> [f64; 3]

Physical centre of the node at node_idx.

Trait Implementations

impl Debug for AmrtTree

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

Formats the value using the given formatter.

impl Default for AmrtTree

fn default() -> AmrtTree

Returns the “default value” for a type.