标签:角度
首先是被雨松大大唤醒的数学知识,代码参考自这里:
using UnityEngine; using System.Collections; public class TestRot : MonoBehaviour { public Transform target; void Start() { //四元数rotation的一些运算 Quaternion rotation = target.rotation * Quaternion.Euler(0f, 30f, 0f);//当前角度绕y轴旋转30度 Vector3 pos = rotation * new Vector3(10f, 0f, 0f);//当前角度沿x轴前进10个单位 Debug.DrawLine(pos, Vector3.zero, Color.red); Debug.Log("newpos " + pos + " nowpos " + target.position + " distance " + Vector3.Distance(pos, target.position)); //向量旋转 //当前向量绕y轴旋转45度,也可认为现将角度绕y轴旋转45度,在沿z轴前进1个单位 Vector3 a = Quaternion.Euler(0f, 45f, 0f) * Vector3.forward;//只旋转,向量的长度是不变的 Debug.Log(a); } }
using UnityEngine; using System.Collections; public class TestRot2 : MonoBehaviour { public Transform target; public float angle = 60f; public float distance = 5f; void Update() { Vector3 direction = target.position - transform.position; if (Vector3.Angle(direction, transform.forward) < angle) if (Vector3.Distance(target.position, transform.position) < distance) print("我已经锁定你了!"); } }
标签:角度
原文地址:http://blog.csdn.net/lyh916/article/details/44728151