public static ImmutableList<TrianglePosition> GetNearest(TrianglePosition current, int triangleSize)
{
var hasLeft = current.Column > 0;
var hasRight = current.Row + current.Column < triangleSize;
var hasBottom = current.Row > 0;
var builder = ImmutableList<TrianglePosition>.Empty.ToBuilder();
if (hasLeft)
{
builder.Add(new TrianglePosition(current.Row, current.Column - 1, triangleSize));
builder.Add(new TrianglePosition(current.Row - 1, current.Column - 1, triangleSize));
}
if (hasRight)
{
builder.Add(new TrianglePosition(current.Row, current.Column + 1, triangleSize));
builder.Add(new TrianglePosition(current.Row + 1, current.Column, triangleSize));
}
if (hasBottom)
{
builder.Add(new TrianglePosition(current.Row - 1, current.Column + 1, triangleSize));
builder.Add(new TrianglePosition(current.Row - 1, current.Column, triangleSize));
}
return builder.ToImmutable();
}
public CellData(int index, TrianglePosition position, [NotNull] ImmutableList<int> adjacentCells)
{
Validate.ArgumentIsNotNull(adjacentCells, nameof(adjacentCells));
Index = index;
Position = position;
AdjacentCells = adjacentCells;
}
public void CheckBallCenterX([Values(1, 3, 5)]int triangleSize)
{
// Given
var cellsCount = PositionHelper.GetCellsCount(triangleSize);
var generator = new GridGenerator(cellsCount, new PortableSize(1, 10));
var column = triangleSize / 2;
var trianglePosition = new TrianglePosition(0, column, triangleSize);
// When
var centerOfMiddle = generator.GetCenterOfCell(trianglePosition);
// Then
centerOfMiddle.X.ShouldBe(0.5);
}
public PortablePoint GetCenterOfCell(TrianglePosition position)
{
var x = (position.Row + 2 * position.Column + 1) * r;
var y = (2 + 3 * position.Row) * t / 2;
Validate.GreaterThan(x, 0);
Validate.GreaterThan(y, 0);
Validate.LessOrEqualThan(y, Size.Height);
Validate.LessOrEqualThan(x, Size.Width);
return new PortablePoint(x, Size.Height - y);
}
public void StartDrag(TrianglePosition initialBall)
{
}
