using System;
using UnityEngine;

public class SliderKnob : MonoBehaviour
{
    public event Action<SliderKnob> OnDrag;

    private Vector3 screenPoint;
    private Vector3 offset;

    void OnMouseDown()
    {
        screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);

        offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
    }

    void OnMouseDrag()
    {
        OnDrag?.Invoke(this);
        /* Vector3 curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);

        Vector3 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
        transform.position = curPosition; */
    }
}