|
public GetDistanceSquared ( |
||
| vec1 | ||
| Результат | float | |
/// <summary>
/// Constructs a <see cref="CryEngine.BoundingSphere"/> that fully contains the given points.
/// </summary>
/// <param name="points">The points that will be contained by the sphere.</param>
/// <param name="result">When the method completes, contains the newly constructed bounding sphere.</param>
public static void FromPoints(Vec3[] points, out BoundingSphere result)
{
// Find the center of all points.
Vec3 center = Vec3.Zero;
for (int i = 0; i < points.Length; ++i)
{
center += points[i];
}
// This is the center of our sphere.
center /= (float)points.Length;
// Find the radius of the sphere
float radius = 0f;
for (int i = 0; i < points.Length; ++i)
{
// We are doing a relative distance comparasin to find the maximum distance
// from the center of our sphere.
float distance = center.GetDistanceSquared(points[i]);
if (distance > radius)
{
radius = distance;
}
}
// Find the real distance from the DistanceSquared.
radius = (float)Math.Sqrt(radius);
// Construct the sphere.
result.Center = center;
result.Radius = radius;
}
/// <summary>
/// Determines whether a <see cref="CryEngine.BoundingSphere"/> contains a point.
/// </summary>
/// <param name="sphere">The sphere to test.</param>
/// <param name="point">The point to test.</param>
/// <returns>The type of containment the two objects have.</returns>
public static bool SphereContainsPoint(ref BoundingSphere sphere, ref Vec3 point)
{
return (point.GetDistanceSquared(sphere.Center) <= sphere.Radius * sphere.Radius);
}