/// <summary> /// Determines whether a <see cref="MyOrientedBoundingBox"/> contains a <see cref="MyBoundingSphere"/>. /// </summary> /// <param name="sphere">The sphere to test.</param> /// <param name="IgnoreScale">Optimize the check operation by assuming that <see cref="MyOrientedBoundingBox"/> has no scaling applied</param> /// <returns>The type of containment the two objects have.</returns> /// <remarks> /// This method is not designed for <see cref="MyOrientedBoundingBox"/> which has a non-uniform scaling applied to its transformation matrix. /// But any type of scaling applied using Scale method will keep this method accurate. /// </remarks> public MyContainmentType Contains(MyBoundingSphere sphere, bool IgnoreScale = false) { MyMatrix invTrans; MyMatrix.Invert(ref Transformation, out invTrans); // Transform sphere center into the obb coordinates MyVector3 locCenter; MyVector3.TransformCoordinate(ref sphere.Center, ref invTrans, out locCenter); float locRadius; if (IgnoreScale) locRadius = sphere.Radius; else { // Transform sphere radius into the obb coordinates MyVector3 vRadius = MyVector3.UnitX * sphere.Radius; MyVector3.TransformNormal(ref vRadius, ref invTrans, out vRadius); locRadius = vRadius.Length(); } //Perform regular BoundingBox to BoundingSphere containment check MyVector3 minusExtens = -Extents; MyVector3 vector; MyVector3.Clamp(ref locCenter, ref minusExtens, ref Extents, out vector); float distance = MyVector3.DistanceSquared(locCenter, vector); if (distance > locRadius * locRadius) return MyContainmentType.Disjoint; if ((((minusExtens.X + locRadius <= locCenter.X) && (locCenter.X <= Extents.X - locRadius)) && ((Extents.X - minusExtens.X > locRadius) && (minusExtens.Y + locRadius <= locCenter.Y))) && (((locCenter.Y <= Extents.Y - locRadius) && (Extents.Y - minusExtens.Y > locRadius)) && (((minusExtens.Z + locRadius <= locCenter.Z) && (locCenter.Z <= Extents.Z - locRadius)) && (Extents.Z - minusExtens.Z > locRadius)))) { return MyContainmentType.Contains; } return MyContainmentType.Intersects; }