Class RepArrayRegionSet<L>

constructor

• new RepArrayRegionSet<L>(gridSize): RepArrayRegionSet<L>

• Create an empty region set for a gridSize x gridSize grid.

  Type Parameters

  • L

  Parameters

  • gridSize: number

    dimension of grid, must be nonnegative integer

  Returns RepArrayRegionSet<L>

Readonly gridSize

add

• add(label, rect): void

• Add a rectangle of grid cells to the region labeled by the given label (or create such a labeled region if it was not already present), if it does not intersect with other existing labeled regions.

  Parameters

  • label: L

    label of region

  • rect: Rect

    rectangle to add to labeled region. Required to have nonzero area and integer coordinates drawn from [0,gridSize].

  Returns void

  Throws

  Error if adding the rectangle would make label's region discontiguous or would intersect with a cell in another labeled region

bounds

• bounds(label): undefined | Rect

• Get the bounding box of a labeled region.

  Parameters

  • label: L

    label of region

  Returns undefined | Rect

  the smallest rectangle that contains all the grid cells in the labeled region, or undefined if no region with that label exists.

owners

• owners(rect): Set<L>

• Get the labels of regions that intersect the given rectangle (where the intersection contains at least one full grid cell).

  Parameters

  • rect: Rect

    rectangle to query. Its coordinates must be integers in [0,gridSize].

  Returns Set<L>

  the labels of regions in this set whose intersection with rect contains at least one grid cell