Grid<E>.generate constructor

Grid<E>.generate(
  1. int width,
  2. int height,
  3. E generator(
    1. Pos pos
    ), {
  4. required E empty,
})

Creates a new ListGrid with the given width and height.

Each element in the grid is initialized by calling generator with the position of the element. The empty element is used as the default value.

The width and height must be non-negative.

Example

final grid = Grid.generate(2, 2, (pos) => pos.x + pos.y, empty: 0);

print(grid.get(Pos(0, 0))); // 0
print(grid.get(Pos(1, 0))); // 1

Implementation

factory Grid.generate(
  int width,
  int height,
  E Function(Pos pos) generator, {
  required E empty,
}) = ListGrid<E>.generate;