/// <summary>
/// Constructs a <see cref="CryEngine.BoundingSphere"/> that is the as large as the total combined area of the two specified spheres.
/// </summary>
/// <param name="value1">The first sphere to merge.</param>
/// <param name="value2">The second sphere to merge.</param>
/// <param name="result">When the method completes, contains the newly constructed bounding sphere.</param>
public static void Merge(ref BoundingSphere value1, ref BoundingSphere value2, out BoundingSphere result)
{
Vec3 difference = value2.Center - value1.Center;
float length = difference.Length;
float radius = value1.Radius;
float radius2 = value2.Radius;
if (radius + radius2 >= length)
{
if (radius - radius2 >= length)
{
result = value1;
return;
}
if (radius2 - radius >= length)
{
result = value2;
return;
}
}
Vec3 vector = difference * (1.0f / length);
float min = MathHelpers.Min(-radius, length - radius2);
float max = (MathHelpers.Max(radius, length + radius2) - min) * 0.5f;
result.Center = value1.Center + vector * (max + min);
result.Radius = max;
}