using System.Collections;
using System.Collections.Generic;
using UnityEngine;


public class TestBounds : MonoBehaviour
{
    private SpriteRenderer sprRender;
    public GameObject Button;
    public Camera UICamera;
    // Start is called before the first frame update
    void Start()
    {
        sprRender = this.GetComponentInChildren<SpriteRenderer>();
        //Debug.LogError(sprRender.sprite.border);
        //Debug.LogError(sprRender.sprite.bounds);
        //Debug.LogError(sprRender.bounds);

        Bounds bounds = sprRender.sprite.bounds;
        Vector4 border = sprRender.sprite.border;
        Vector2 minPos = sprRender.transform.TransformPoint(bounds.center - new Vector3(bounds.extents.x - border.x / sprRender.sprite.pixelsPerUnit, bounds.extents.y - border.y / sprRender.sprite.pixelsPerUnit));
        Vector2 maxPos = sprRender.transform.TransformPoint(bounds.center + new Vector3(bounds.extents.x - border.z / sprRender.sprite.pixelsPerUnit, bounds.extents.y - border.w / sprRender.sprite.pixelsPerUnit));
        Vector2 midPos = (minPos + maxPos) / 2;
        Debug.LogError("worldPos:" + minPos + "|" + maxPos);

        Vector2 midLeft = new Vector2(minPos.x, midPos.y);
        //minPos = RectTransformUtility.WorldToScreenPoint(UICamera, minPos);
        Debug.LogError("screenPos:" + minPos + "|" + maxPos);
        // minPos = Canvas.transform.TransformPoint(minPos);
        Debug.LogError("uiPos:" + minPos + "|" + maxPos);
        var trans = Button.GetComponent<RectTransform>();
        //trans.anchoredPosition = trans.InverseTransformPoint(minPos);
        trans.position = midLeft;
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    void OnDrawGizmos()
    {
        sprRender = this.GetComponent<SpriteRenderer>();
        if (sprRender != null)
        {
            Bounds bounds = sprRender.sprite.bounds;
            Vector4 border = sprRender.sprite.border;
            Vector2 minPos = sprRender.transform.TransformPoint(bounds.center - new Vector3(bounds.extents.x - border.x/sprRender.sprite.pixelsPerUnit, bounds.extents.y - border.y / sprRender.sprite.pixelsPerUnit));
            Vector2 maxPos = sprRender.transform.TransformPoint(bounds.center + new Vector3(bounds.extents.x - border.z / sprRender.sprite.pixelsPerUnit, bounds.extents.y - border.w / sprRender.sprite.pixelsPerUnit));
            Debug.DrawLine(minPos, maxPos);
            //Vector3 lt = bounds.min + new Vector3(0, bounds.size.y, 0);
            //Vector3 rb = bounds.max + new Vector3(0, -bounds.size.y, 0);
            //Debug.DrawLine(bounds.min, lt);
            //Debug.DrawLine(lt, bounds.max);
            //Debug.DrawLine(bounds.max, rb);
            //Debug.DrawLine(bounds.min, rb);
        }
    }
}