Struct Mosaic 

pub struct Mosaic<V: Vertex = Coord<i32>> { /* private fields */ }

Reassembles tiled polyline features back into whole features as tiles are added.

Generic over the Vertex type V (defaults to Coord<i32>). Needs only the extent the tiles were sliced at — never the buffer (see the module docs). A payload-carrying vertex (e.g. Measured) additionally makes payload Conflicts meaningful.

Implementations

impl<V: Vertex> Mosaic<V>

pub fn new(extent: u32) -> Result<Self, TileError>

Create an empty mosaic for tiles sliced at extent.

Errors

TileError::InvalidExtent if extent is 0 or greater than i32::MAX.

pub fn extent(&self) -> u32

The extent every tile is sliced at.

pub fn add<L: AsRef<[V]>>( &mut self, tile: TileId, runs: &[L], ) -> Result<(), TileError>

Add tile’s runs (in its local frame) to the mosaic. runs is anything sliceable to [V] (e.g. &[&[V]] collected from a tile’s features). Re-adding a tile replaces its contents. A tile with no ≥2-vertex run contributes nothing.

Errors

• TileError::Conflict if the tile disagrees with already-added tiles on a shared border segment. The mosaic is unchanged.
• TileError::Overflow if a vertex overflows i32 when rebased into the global frame.

pub fn purge(&mut self, tile: TileId) -> bool

Remove tile and all geometry it contributed. Returns whether the tile was present.

pub fn iter_features(&self) -> impl Iterator<Item = Vec<V>>

Iterate every reassembled feature — geometry stitched across tile borders into maximal polylines, in the global frame. A single iterator over the whole mosaic; deterministic order.

pub fn contains(&self, tile: TileId) -> bool

Whether tile is currently in the mosaic.

pub fn len(&self) -> usize

The number of tiles currently in the mosaic.

pub fn is_empty(&self) -> bool

Whether no tile has been added yet.

pub fn clear(&mut self)

Discard every tile, keeping the extent.

Trait Implementations

impl<V: Clone + Vertex> Clone for Mosaic<V>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug + Vertex> Debug for Mosaic<V>

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

Formats the value using the given formatter.