public float Distance(Sphere other) => (Center.Distance(other.Center) - Radius - other.Radius).ClampLower(0);
public ContainmentType Contains(Sphere sphere)
{
if (sphere.Center.X - Min.X >= sphere.Radius &&
sphere.Center.Y - Min.Y >= sphere.Radius &&
sphere.Center.Z - Min.Z >= sphere.Radius &&
Max.X - sphere.Center.X >= sphere.Radius &&
Max.Y - sphere.Center.Y >= sphere.Radius &&
Max.Z - sphere.Center.Z >= sphere.Radius)
{
return(ContainmentType.Contains);
}
double dmin = 0;
double e = sphere.Center.X - Min.X;
if (e < 0)
{
if (e < -sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
else
{
e = sphere.Center.X - Max.X;
if (e > 0)
{
if (e > sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
}
e = sphere.Center.Y - Min.Y;
if (e < 0)
{
if (e < -sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
else
{
e = sphere.Center.Y - Max.Y;
if (e > 0)
{
if (e > sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
}
e = sphere.Center.Z - Min.Z;
if (e < 0)
{
if (e < -sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
else
{
e = sphere.Center.Z - Max.Z;
if (e > 0)
{
if (e > sphere.Radius)
{
return(ContainmentType.Disjoint);
}
dmin += e * e;
}
}
if (dmin <= sphere.Radius * sphere.Radius)
{
return(ContainmentType.Intersects);
}
return(ContainmentType.Disjoint);
}
/// <summary>
/// Gets whether or not the other <see cref="Sphere"/> intersects with this sphere.
/// </summary>
public bool Intersects(Sphere sphere)
{
var sqDistance = sphere.Center.DistanceSquared(Center);
return(!(sqDistance > (sphere.Radius + Radius) * (sphere.Radius + Radius)));
}
public static Box CreateFromSphere(Sphere sphere) => new Box(sphere.Center - new Vector3(sphere.Radius), sphere.Center + new Vector3(sphere.Radius));