Struct SymbolPlacementEngine 

pub struct SymbolPlacementEngine {
    pub config: SymbolPlacementConfig,
    pub cross_tile_index: CrossTileSymbolIndex,
    /* private fields */
}

Stateful placement engine with collision handling and fade persistence.

Fields

config: SymbolPlacementConfig

Placement tuning parameters.

cross_tile_index: CrossTileSymbolIndex

Cross-tile symbol index for deduplicating labels across tile boundaries.

Implementations

impl SymbolPlacementEngine

pub fn new() -> Self

Create a placement engine with default configuration.

pub fn remove_tile(&mut self, tile_id: &TileId)

Remove all cross-tile index entries for a specific tile.

Call this when a tile is evicted from the tile cache so that the index releases the associated cross-tile IDs.

pub fn place_candidates( &mut self, candidates: &[SymbolCandidate], projection: CameraProjection, meters_per_pixel: f64, dt_seconds: f64, viewport_bounds: Option<&WorldBounds>, ) -> Vec<PlacedSymbol>

Place candidates for the current frame.

Trait Implementations

impl Clone for SymbolPlacementEngine

fn clone(&self) -> SymbolPlacementEngine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SymbolPlacementEngine

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

Formats the value using the given formatter.

impl Default for SymbolPlacementEngine

fn default() -> SymbolPlacementEngine

Returns the “default value” for a type.