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

public class UIMultiScaleTool : MonoBehaviour, IPinchHandler
{
    //该脚本由PinchZoom自动挂接

    float scale = 1.0f;

    public float minScale;
    public float maxScale;

    private void OnEnable()
    {
        scale = 1.0f;
    }
    void Update()
    {
        float scrollWheelDelta = Input.GetAxis("Mouse ScrollWheel");
        if (scrollWheelDelta > 0.01f || scrollWheelDelta < 0.01f)//鼠标滚轮
        {
            scale += Input.GetAxis("Mouse ScrollWheel") * 0.5f;
            scale = Mathf.Clamp(scale, minScale, maxScale);
            transform.localScale = Vector3.one * scale;
        }
    }

    public void OnPinchStart() { }
    public void OnPinchEnd() { }
    public void OnPinchZoom(float delta)
    {
        _processPinch(delta);
    }


    private void _processPinch(float delta)
    {
        transform.localScale = Vector3.one * delta;
    }
}