abstract class TileCombineVisitor[R] extends GridVisitor[Raster[Tile], R]
A helper for constructing visitors for Raster[Tile] as long as R conforms to Cats.Monoid
In other words, as long as you can define a empty state and a combine operation on your type R, this visitor can automatically generate a Visitor for polygonal summaries on your type R.
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def
result: R
Called when a result is desired by the parent implementation.
Called when a result is desired by the parent implementation.
No guarantees are made that this will only be called after all visitation is complete. As a result, this should return an iterative result as cells are visited for full compatibility.
- returns
R
- Definition Classes
- TileCombineVisitor → GridVisitor
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def
visit(raster: Raster[Tile], col: Int, row: Int): Unit
Called when the visitor requests a unit of computation for the given col and row.
Called when the visitor requests a unit of computation for the given col and row.
The visitor result should be updated within this method as appropriate for the implementation.
- col
The column in the grid being visited
- row
The row in the grid being visited
- Definition Classes
- TileCombineVisitor → GridVisitor
- See also
polygonal.visitors.TileCombineVisitor and polygonal.visitors.MaxVisitor for an example concrete implementation.