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Question by caos23121987 · Jul 17, 2018 at 09:30 AM · unity 52duiphysicsimage

UI Collision Detection

Hello. I would like to show within a canvas element some pictures, which can be moved by drag n` drop. Here, a collision detection to take place, which should prevent the images are placed over each other. I've already tried with Rigidbody2D and BoxCollider2D but unfortunately without success. I hope that who can help. My code currently looks like this:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.EventSystems;
 
 public class DragAndRotateHandler : MonoBehaviour, IPointerDownHandler, IPointerUpHandler, IDragHandler
 {
     private bool drag;
     public void OnDrag( PointerEventData eventData )
     {
         if (drag)
         {
             transform.position = eventData.position;
         }
     }
     public void OnPointerDown( PointerEventData eventData )
     {
         drag = true;
     }
 
     public void OnPointerUp( PointerEventData eventData )
     {
         drag = false;
     }
 
 
     private void OnCollisionEnter( Collision other )
     {
         Debug.Log("collission enter");
     }
     private void OnCollisionEnter2D( Collision2D collision )
     {
         Debug.Log("collission enter 2D");
     }
 
     private void OnCollisionStay( Collision other )
     {
         Debug.Log("collission stay");
     }
     private void OnCollisionStay2D( Collision2D collision )
     {
         Debug.Log("collission stay 2D");
     }
 
     private void OnCollisionExit( Collision other )
     {
         Debug.Log("collission exit");
     }
     private void OnCollisionExit2D( Collision2D collision )
     {
         Debug.Log("collission exit 2D");
     }
 }

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