public static Point2 ToGrid(this IReadOnlyArray2D array, int i)
{
var y = i / array.Width;
var x = i - y * array.Width;
return(new Point2(x, y));
}
private static List <NodePointer> GetNeighbours(IReadOnlyArray2D <DefinitionNode> nodeArray, int gridX, int gridY, GenerateNodeGridConnections generateNodeGridConnections)
{
var neighbours = new List <NodePointer>();
for (var y = -1; y <= 1; y++)
{
for (var x = -1; x <= 1; x++)
{
if (x == 0 && y == 0)
{
continue; //Skip the center since this is the node we are adding neighbours to.
}
var checkX = gridX + x;
var checkY = gridY + y;
if (checkX >= 0 && checkX < nodeArray.Width && checkY >= 0 && checkY < nodeArray.Height)
{
if (generateNodeGridConnections == GenerateNodeGridConnections.NoDiagonal)
{
if (x == 1 && y == 1 || x == -1 && y == 1 || x == -1 && y == -1 || x == 1 && y == -1)
{
continue;
}
}
var p = new NodePointer(nodeArray.Width * checkY + checkX);
neighbours.Add(p);
}
}
}
return(neighbours);
}
private int GetIndex(IReadOnlyArray2D readOnlyArray2D, int x, int y)
{
if (x >= 0 && y >= 0 && x < readOnlyArray2D.Width && y < readOnlyArray2D.Height)
{
return(readOnlyArray2D.ToIndex(x, y));
}
return(-1);
}
public static int ToIndex(this IReadOnlyArray2D array, int x, int y)
{
return(x + y * array.Width);
}
public static int ToIndex(this IReadOnlyArray2D array, Point2 gridCoords)
{
return(ToIndex(array, gridCoords.X, gridCoords.Y));
}
