ChildVicinity constructor

const ChildVicinity({
  1. required int xIndex,
  2. required int yIndex,
})

Creates a reference to a child in a two dimensional plane, with the xIndex and yIndex being relative to other children in the viewport.

Implementation

const ChildVicinity({required this.xIndex, required this.yIndex})
  : assert(xIndex >= -1),
    assert(yIndex >= -1);