[SaveSource] Drag Script

public class TouchManager : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{
    public void OnBeginDrag(PointerEventData _eventData)
    {
        transform.position = _eventData.position;
    }

    public void OnDrag(PointerEventData _eventData)
    {
        transform.position = _eventData.position;
    }

    public void OnEndDrag(PointerEventData _eventData)
    {
        transform.position = _eventData.position;
    }
}

- 이벤트 핸들러를 붙여서 스크립트상에서 구현하는 것 (인스펙터에서도 붙일 수 있슴)

- using UnityEngine.EventSystems;

- UI Object에 부착

+) 드래그로 회전

void TouchRotation(Touch touch)
    {
        if (touch.phase == TouchPhase.Began)
        {
            initTouch = touch;
        }
        else if (touch.phase == TouchPhase.Moved)
        {
            float deltaX = initTouch.position.x - touch.position.x;
            rotY += deltaX * Time.deltaTime * rotSpeed * dir;
            Target.eulerAngles = new Vector3(rotX, rotY, 0f);
        }
        else if (touch.phase == TouchPhase.Ended)
        {
            initTouch = new Touch();
        }
    }