最近要做個東西，裡面需要用多點觸控的形式跟模型進行互動

首先，

　　在MainCamera上新增 Physics Raycaster 

然後，

　　在模型上新增EventTrigger

　　在模型上新增指令碼ShiYe

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;

public class ShiYe : MonoBehaviour {

    
 
// Use this for initialization
    void Start () {

        AddTriggersListener(this.gameObject, EventTriggerType.PointerEnter, logoSelectFunc);
    }

    private void logoSelectFunc(BaseEventData arg0)
    {
        Debug.Log("aaa");
    }

    // Update is called once per frame
    void Update () {

    }
    
 
private void AddTriggersListener(GameObject obj, EventTriggerType eventID, UnityAction<BaseEventData> action)
    {
        EventTrigger trigger = obj.GetComponent<EventTrigger>();
        if (trigger == null)
        {
            trigger = obj.AddComponent<EventTrigger>();
        }

        
 
if (trigger.triggers.Count == 0)
        {
            trigger.triggers = new List<EventTrigger.Entry>();
        }

        UnityAction<BaseEventData> callback = new UnityAction<BaseEventData>(action);
        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = eventID;
        entry.callback.AddListener(callback);
        trigger.triggers.Add(entry);
    }
}

現在再拿滑鼠從模型上划過去 就會看到輸出aaa了