Struct RenderCells

pub struct RenderCells {
    pub polygons_per_cell: Vec<Vec<Polygon>>,
    pub colors: Vec<Color>,
    boundary_polygon: Polygon,
}

Fields

polygons_per_cell: Vec<Vec<Polygon>>

Rarely, this might be empty if the area is very small

colors: Vec<Color>

Colors per cell, such that adjacent cells are colored differently

boundary_polygon: Polygon

Implementations

impl RenderCells

pub fn new(map: &Map, neighbourhood: &Neighbourhood) -> RenderCells

Partition a neighbourhood’s boundary polygon based on the cells. This discretizes space into a grid, and then extracts a polygon from the raster. The results don’t look perfect, but it’s fast.

pub fn draw_colored_areas(&self) -> GeomBatch

Draw cells as areas with different colors. The colors are meaningless, but the same color won’t be shared between adjacent cells.

pub fn draw_island_outlines(&self) -> GeomBatch

Draw the boundary between cells as a thick outline. It’s meant to look like the neighbourhood is split into disconnected islands.

pub fn to_multipolygons(&self) -> Vec<MultiPolygon>

Per cell, convert all polygons to a geo::MultiPolygon. Leave the coordinate system as map-space.