判断方位

假设空间中有这几个坐标，判断一个物体在另一个物体的左边还是右边，前后还是后面

物体空间图

假如以C为中心，判断L是在它的左边还是右边

判断方法

using UnityEngine;using System.Collections;public class GetDirection : MonoBehaviour{        public Transform cubeF;        public Transform cubeB;        public Transform cubeL;        public Transform cubeR;        public Transform cubeC;            void Update ()        {                Vector3 forward = transform.TransformDirection (Vector3.forward);                Vector3 toOther = cubeB.position - transform.position;                if (Vector3.Dot (forward, toOther) < 0) {                        print ("The other transform is behind me !");                } else {                        print ("The other transform is ahead me !");                }                Vector3 left = transform.TransformDirection (Vector3.right);                Vector3 toOtherL = cubeL.position - transform.position;                if (Vector3.Dot (left, toOtherL) < 0) {                        print ("The other transform is left me !");                } else {                        print ("The other transform is right me !");                }        }}

 

改变位置测试

运行拖动物体在cubeC的不同位置