3d object like PLANE act as clickable button?

Hi here is a simple script to make an object act like a button with a OnClick event. Just attach this script to a 3d object you would like to make a button. Cheers

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Events;
 
 public class WebsiteButton : MonoBehaviour {
 
     public GameObject definedButton;
     public UnityEvent OnClick = new UnityEvent();
 
     // Use this for initialization
     void Start () {
         definedButton = this.gameObject;
     }
     
     // Update is called once per frame
     void Update () {
         var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
         RaycastHit Hit;
         
         if (Input.GetMouseButtonDown(0))
         {
             if (Physics.Raycast(ray, out Hit) && Hit.collider.gameObject == gameObject)
             {
                 Debug.Log("Button Clicked");
                 OnClick.Invoke();
             }
         }    
     }
 }

Hi,

you can find a few Posts about this:

Here and another one here

You have two Options. One is to use OnMouseDown or you could use Raycast to "hit" the 3d Object, but dont forget to put a collider on the 3d Object. You can see further details on those two links, which are provided.