Struct GraphLayout 

pub struct GraphLayout {
    pub positions: Vec<(u64, NodePosition)>,
}

A mapping of node IDs to 2-D canvas positions.

Fields

positions: Vec<(u64, NodePosition)>

(node_id, position) pairs.

Implementations

impl GraphLayout

pub fn new() -> Self

Creates an empty layout.

pub fn get_position(&self, node_id: u64) -> Option<&NodePosition>

Returns the position of node_id, or None if not yet placed.

pub fn set_position(&mut self, node_id: u64, pos: NodePosition)

Sets or updates the position for node_id.

pub fn auto_layout_left_right(nodes: &[u64], edges: &[(u64, u64)]) -> Self

Computes a column-based left-to-right layout using BFS layering.

nodes is the ordered list of all node IDs; edges is a list of (from_id, to_id) pairs. Nodes in the same BFS depth layer are stacked vertically, spaced 100 units apart. Layers are spaced 200 units horizontally.

Trait Implementations

impl Debug for GraphLayout

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

Formats the value using the given formatter.

impl Default for GraphLayout

fn default() -> GraphLayout

Returns the “default value” for a type.