Struct nannou::ui::graph::DepthOrder

pub struct DepthOrder {
    pub indices: Vec<NodeIndex<u32>, Global>,
    // some fields omitted
}

Contains Node indices in order of depth, starting with the deepest.

Fields

indices: Vec<NodeIndex<u32>, Global>

The primary Vec storing the DepthOrder’s ordered indices.

Implementations

impl DepthOrder

pub fn new() -> DepthOrder

Construct a new empty DepthOrder.

pub fn with_node_capacity(n_nodes: usize) -> DepthOrder

Construct a new empty DepthOrder.

There can be at most two indices per widget (the widget and the widget’s scrollbar). Thus we’ll reserve double the number of nodes given.

pub fn update(
    &mut self,
    graph: &Graph,
    root: NodeIndex<u32>,
    updated_widgets: &HashSet<NodeIndex<u32>, BuildHasherDefault<FnvHasher>>
)

Update the DepthOrder (starting with the deepest) for all nodes in the given Graph.

FIXME: This likely needs to be re-written, and will probably fail for graphs with many floating widgets instantiated upon other floating widgets.

The proper algorithm should be a full toposort where the neighbours of each node are visited in the order specified within visit_by_depth.

The visit_by_depth algorithm should not be recursive and instead use either looping, walking or iteration.

Trait Implementations

impl Debug for DepthOrder

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

Formats the value using the given formatter.