「AABB」を編集中 (節単位)

== 実装例 ==
[[MonoGame]]での実装例。[[デバッグ]]はしていない。
<source lang="csharp">
    using System;
    using Microsoft.Xna.Framework;

    // FromとToを結ぶ立方体
    public struct AABB
    {
        public Vector3 From;
        public Vector3 To;

        public Vector3 Center
        {
            get
            {
                return this.From + this.Harf;
            }
        }

        public Vector3 Harf
        {
            get
            {
                return this.Width * 0.5f;
            }
        }

        public Vector3 Width { 
            get 
            { 
                return this.To - this.From; 
            } 
        }

        public AABB(Vector3 from, Vector3 to)
        {
            this.From = new Vector3(Math.Min(from.X, to.X), Math.Min(from.Y, to.Y), Math.Min(from.Z, to.Z)); 
            this.To   = new Vector3(Math.Max(from.X, to.X), Math.Max(from.Y, to.Y), Math.Max(from.Z, to.Z)); 
        }

        public bool Contains(AABB target)
        {
            if ((this.Harf.X + target.Harf.X) < Math.Abs(this.Center.X - target.Center.X)) return false;
            if ((this.Harf.Y + target.Harf.Y) < Math.Abs(this.Center.Y - target.Center.Y)) return false;
            if ((this.Harf.Z + target.Harf.Z) < Math.Abs(this.Center.Z - target.Center.Z)) return false;

            return true;
        }
    }
</source>