public void Normalize_Vec3_LengthIsEqualToOne()
{
Vec3 v = new Vec3(26, 23, 135);
v.Normalize();
Assert.IsTrue(v.Length == 1);
}
/// <summary>
/// Determines the closest point between a <see cref="CryEngine.BoundingSphere"/> and a <see cref="CryEngine.BoundingSphere"/>.
/// </summary>
/// <param name="sphere1">The first sphere to test.</param>
/// <param name="sphere2">The second sphere to test.</param>
/// <param name="result">When the method completes, contains the closest point between the two objects;
/// or, if the point is directly in the center of the sphere, contains <see cref="CryEngine.Vec3"/>.</param>
/// <remarks>
/// If the two spheres are overlapping, but not directly ontop of each other, the closest point
/// is the 'closest' point of intersection. This can also be considered is the deepest point of
/// intersection.
/// </remarks>
public static void ClosestPointSphereSphere(ref BoundingSphere sphere1, ref BoundingSphere sphere2, out Vec3 result)
{
// Source: Jorgy343
// Reference: None
// Get the unit direction from the first sphere's center to the second sphere's center.
result = sphere2.Center - sphere1.Center;
result.Normalize();
// Multiply the unit direction by the first sphere's radius to get a vector
// the length of the first sphere.
result *= sphere1.Radius;
// Add the first sphere's center to the direction to get a point on the first sphere.
result += sphere1.Center;
}