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

public class screenwheel : MonoBehaviour, IDragHandler, IBeginDragHandler, IEndDragHandler
{

    public Transform onsol;
    public Transform onsag;

    public WheelCollider onsolwc;
    public WheelCollider onsagwc;
    Vector3 position1;
    Quaternion rotation1;
    Vector3 position2;
    Quaternion rotation2;
    float wheelPrevAngle;
    float wheelDragAngle;
    float previous_wheelDragAngle;
    Vector2 centerPoint;
    Vector2 screenPoint2;
    Vector2 firsttouch;
    Vector2 initialtouch;
    Vector2 touchPoint;

    public void OnBeginDrag(PointerEventData eventData)
    {

        centerPoint = RectTransformUtility.WorldToScreenPoint(((PointerEventData)eventData).pressEventCamera, transform.position);

        initialtouch = RectTransformUtility.WorldToScreenPoint(((PointerEventData)eventData).pressEventCamera, eventData.position);

        firsttouch = initialtouch - centerPoint;

        Debug.Log("start touch " + wheelPrevAngle);

    }

    public void OnDrag(PointerEventData eventData)
    {


        centerPoint = RectTransformUtility.WorldToScreenPoint(((PointerEventData)eventData).pressEventCamera, transform.position);
        Debug.Log(centerPoint);

        touchPoint = RectTransformUtility.WorldToScreenPoint(((PointerEventData)eventData).pressEventCamera, eventData.position);
        Debug.Log(touchPoint);

        wheelDragAngle = Vector2.SignedAngle(firsttouch, touchPoint - centerPoint) + previous_wheelDragAngle;
        Debug.Log(wheelDragAngle);


    }

    public void OnEndDrag(PointerEventData eventData)
    {
        previous_wheelDragAngle = wheelDragAngle;

    }

    private void FixedUpdate()
    {

        onsolwc.steerAngle = wheelDragAngle;
        onsagwc.steerAngle = wheelDragAngle;

        transform.rotation = Quaternion.Euler(0f, 0f, wheelDragAngle);

    }

}