/// <summary>
/// Returns true if 2 boxes intersect each other with tolerance parameter.
/// </summary>
public bool Intersects(Box3 box, float eps)
{
if (Min.X - eps > box.Max.X) return false;
if (Max.X + eps < box.Min.X) return false;
if (Min.Y - eps > box.Max.Y) return false;
if (Max.Y + eps < box.Min.Y) return false;
if (Min.Z - eps > box.Max.Z) return false;
if (Max.Z + eps < box.Min.Z) return false;
return true;
}
/// <summary>
///
/// </summary>
/// <param name="b"></param>
/// <returns></returns>
public Box3 Union(Box3 b)
{
return Union(this, b);
}
/// <summary>
/// Returns true if 2 boxes intersect each other.
/// </summary>
public bool Intersects(Box3 box)
{
if (Min.X > box.Max.X) return false;
if (Max.X < box.Min.X) return false;
if (Min.Y > box.Max.Y) return false;
if (Max.Y < box.Min.Y) return false;
if (Min.Z > box.Max.Z) return false;
if (Max.Z < box.Min.Z) return false;
return true;
}
/// <summary>
/// Returns true if 2 boxes intersect each other with tolerance parameter.
/// </summary>
public bool Intersects(Box3 box, Vector3 eps)
{
if (Min.X - eps.X > box.Max.X) return false;
if (Max.X + eps.X < box.Min.X) return false;
if (Min.Y - eps.Y > box.Max.Y) return false;
if (Max.Y + eps.Y < box.Min.Y) return false;
if (Min.Z - eps.Z > box.Max.Z) return false;
if (Max.Z + eps.Z < box.Min.Z) return false;
return true;
}
/// <summary>
///
/// </summary>
/// <param name="b"></param>
/// <returns></returns>
public Box3 Intersection(Box3 b)
{
return Intersection(this, b);
}
/// <summary>
/// Extends the box to contain the supplied box.
/// </summary>
public Box3 ExtendBy(Box3 box)
{
if (box.Min.X < Min.X) Min.X = box.Min.X;
if (box.Max.X > Max.X) Max.X = box.Max.X;
if (box.Min.Y < Min.Y) Min.Y = box.Min.Y;
if (box.Max.Y > Max.Y) Max.Y = box.Max.Y;
if (box.Min.Z < Min.Z) Min.Z = box.Min.Z;
if (box.Max.Z > Max.Z) Max.Z = box.Max.Z;
return this;
}
/// <summary>
/// Returns true if the box completely contains the given box.
/// </summary>
public bool Contains(Box3 b)
{
return
b.Min.X >= Min.X && b.Max.X <= Max.X &&
b.Min.Y >= Min.Y && b.Max.Y <= Max.Y &&
b.Min.Z >= Min.Z && b.Max.Z <= Max.Z;
}
/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static Box3 Union(Box3 a, Box3 b)
{
return new Box3(VectorComparisonExtensions.ComponentMin(a.Min, b.Min), VectorComparisonExtensions.ComponentMax(a.Max, b.Max));
}
/// <summary>
/// Creates box from a set points which need not be Min and Max.
/// </summary>
/// <param name="points"></param>
public static Box3 FromPoints(IEnumerable<Vector3> points)
{
var box = new Box3();
foreach (var p in points)
box.ExtendBy(p);
return box;
}