/// <summary>
/// Calculates the distance between a point and a solid axis-aligned box.
/// </summary>
/// <param name="point">A <see cref="Vector2F"/> instance.</param>
/// <param name="aabb">An <see cref="AxisAlignedBox"/> instance.</param>
/// <returns>The distance between a point and a solid axis-aligned box.</returns>
/// <remarks>
/// Treating the box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float Distance(Vector2F point, AxisAlignedBox aabb)
{
return (float)System.Math.Sqrt(SquaredDistance(point, aabb));
}
/// <summary>
/// Calculates the squared distance between a point and a solid axis-aligned box.
/// </summary>
/// <param name="point">A <see cref="Vector2F"/> instance.</param>
/// <param name="aabb">An <see cref="AxisAlignedBox"/> instance.</param>
/// <returns>The squared distance between a point and a solid axis-aligned box.</returns>
/// <remarks>
/// Treating the box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float SquaredDistance(Vector2F point, AxisAlignedBox aabb)
{
float sqrDistance = 0.0f;
float delta;
if (point.X < aabb.Min.X)
{
delta = point.X - aabb.Min.X;
sqrDistance += delta*delta;
}
else if (point.X > aabb.Max.X)
{
delta = point.X - aabb.Max.X;
sqrDistance += delta*delta;
}
if (point.Y < aabb.Min.Y)
{
delta = point.Y - aabb.Min.Y;
sqrDistance += delta*delta;
}
else if (point.Y > aabb.Max.Y)
{
delta = point.Y - aabb.Max.Y;
sqrDistance += delta*delta;
}
return sqrDistance;
}
/// <summary>
/// Initializes a new instance of the <see cref="AxisAlignedBox"/> class using given values from another box instance.
/// </summary>
/// <param name="box">A <see cref="AxisAlignedBox"/> instance to take values from.</param>
public AxisAlignedBox(AxisAlignedBox box)
{
_min = box.Min;
_max = box.Max;
}
/// <summary>
/// Initializes a new instance of the <see cref="AxisAlignedBox"/> class using given values from another box instance.
/// </summary>
/// <param name="box">A <see cref="AxisAlignedBox"/> instance to take values from.</param>
public AxisAlignedBox(AxisAlignedBox box)
{
_min = box.Min;
_max = box.Max;
}
/// <summary>
/// Calculates the distance between a point and a solid axis-aligned box.
/// </summary>
/// <param name="point">A <see cref="Vector2F"/> instance.</param>
/// <param name="aabb">An <see cref="AxisAlignedBox"/> instance.</param>
/// <returns>The distance between a point and a solid axis-aligned box.</returns>
/// <remarks>
/// Treating the box as solid means that any point inside the box has
/// distance zero from the box.
/// </remarks>
public static float Distance(Vector2F point, AxisAlignedBox aabb)
{
return((float)System.Math.Sqrt(SquaredDistance(point, aabb)));
}
