Unity---判断某个点是否在摄像机的视景范围内

 using UnityEngine;

 [RequireComponent(typeof(Camera))]
 public class VisualDetectionCamera : MonoBehaviour
 {
     Camera m_Camera;

     Transform m_Trans;
     public Transform Trans
     {
         get
         {
             if (null == m_Trans)
                 m_Trans = transform;
             return m_Trans;
         }
     }

     void Awake()
     {
         m_Camera = GetComponent<Camera>();
         InitializeCamera();
     }

     void InitializeCamera()
     {
         if (null != m_Camera)
         {

         }
     }

     //计算摄像机的视景并返回它的六个面
     Plane[] GetFrustumPlanes()
     {
         return GeometryUtility.CalculateFrustumPlanes(m_Camera);
     }

     public bool IsPointInFrustum(Vector3 point)
     {
         Plane[] planes = GetFrustumPlanes();

         for (int i = , iMax = planes.Length; i < iMax; ++i)
         {
             //判断一个点是否在平面的正方向上
             if (!planes[i].GetSide(point))
                 return false;
         }

         return true;
     }
 }

测试工程:

链接：https://pan.baidu.com/s/13LDXG2Uk-nI80sXKguQBBw
提取码：l9oa