u3d目标与摄像机之间的遮挡物变为透明

秒速五厘米 2022-06-17 07:44 215阅读 0赞

摄像机和目标物体连接一个射线，然后射线碰到的物体的Transparent/Diffuse全部设为半透明

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class XrayCameral : MonoBehaviour {
    
        public Transform tar;
        public List<Renderer> listLastRend = new List<Renderer>();
        // Use this for initialization
        void Start () {
    
            
    	}
    	
    	// Update is called once per frame
    	void Update () {
            
            for (int i = 0; i < listLastRend.Count; i++)
            {
                TransparencySet(listLastRend[i], 1.0f);
            }
            listLastRend.Clear();
            Vector3 tarDir = (tar.position - transform.position).normalized;
            Debug.DrawLine(tar.position, transform.position, Color.red);
    
            float tarDis = Vector3.Distance(tar.position, transform.position);
            RaycastHit[] listHitObj = Physics.RaycastAll(transform.position, tarDir, tarDis);
            Debug.Log(listHitObj.Length);
            for (int i = 0; i < listHitObj.Length; i++)
            {
                RaycastHit hit = listHitObj[i];
                if (hit.transform == tar.transform)
                {
                    continue;
                }
                Renderer renderer = hit.collider.GetComponent<Renderer>();
    
                if (renderer)
                {
                    listLastRend.Add(renderer);
                    TransparencySet(renderer,0.3f);
                }
            }
    
        }
    
        void TransparencySet(Renderer renderer,float a)
        {
            renderer.material.shader = Shader.Find("Transparent/Diffuse");
            renderer.material.color = new Color(renderer.material.color.r, renderer.material.color.g, renderer.material.color.b, a);
        }
    }