117 lines
3.9 KiB
C#
117 lines
3.9 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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/// <summary>
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/// 手势操作
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/// </summary>
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public class TouchScreen : MonoBehaviour
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{
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public Transform currentTra;
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private Touch oldTouch1; //上次触摸点1(手指1)
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private Touch oldTouch2; //上次触摸点2(手指2)
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Touch newTouch1;
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Touch newTouch2;
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float divisor = 9.353074f;//初始模型缩放比例
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public float MaxScale;
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public float MinScale;
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public bool IsTouch;
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// Start is called before the first frame update
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private void Awake()
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{
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MaxScale = 2 * divisor;
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MinScale = 0.8f * divisor;
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}
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void Start()
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{
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//currentTra = this.transform;
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}
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// Update is called once per frame
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void Update()
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{
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if (IsTouch)
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{
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//没有触摸
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if (Input.touchCount <= 0)
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{
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return;
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}
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//单点拖动
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else if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved)
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{
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//
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//var deltaposition = Input.GetTouch(0).deltaPosition;
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//transform.Translate(new Vector3(deltaposition.x * 0.01f, deltaposition.y * 0.01f, 0f), Space.World);
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//Debug.Log("单点触摸， 水平上下旋转 ");
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Touch touch = Input.GetTouch(0);
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Vector2 deltaPos = touch.deltaPosition;//位置增量
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if (Mathf.Abs(deltaPos.x) >= 3 || Mathf.Abs(deltaPos.y) >= 3)
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{
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transform.Rotate(Vector3.down * deltaPos.x, Space.World);//绕y轴旋转
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transform.Rotate(Vector3.right * deltaPos.y, Space.World);//绕x轴
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}
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}
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//双指旋转 && 缩放
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else if (2 <= Input.touchCount)
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{
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////Debug.Log("单点触摸， 水平上下旋转 ");
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//Touch touch = Input.GetTouch(0);
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//Vector2 deltaPos = touch.deltaPosition;//位置增量
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//if (Mathf.Abs(deltaPos.x) >= 3 || Mathf.Abs(deltaPos.y) >= 3)
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//{
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// transform.Rotate(Vector3.down * deltaPos.x, Space.World);//绕y轴旋转
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// transform.Rotate(Vector3.right * deltaPos.y, Space.World);//绕x轴
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//}
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//缩放
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newTouch1 = Input.GetTouch(0);//
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newTouch2 = Input.GetTouch(1);
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if (newTouch2.phase == TouchPhase.Began)
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{
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oldTouch2 = newTouch2;
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oldTouch1 = newTouch1;
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return;
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}
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float oldDistance = Vector2.Distance(oldTouch1.position, oldTouch2.position);//计算两点距离
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float newDistance = Vector2.Distance(newTouch1.position, newTouch2.position);//计算两点距离
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float offset = newDistance - oldDistance;
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if (Mathf.Abs(offset) >= 3)
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{
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Debug.Log(offset);
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//放大因子， 一个像素按 0.01倍来算(100可调整)
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float scaleFactor = offset / 100f;
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Vector3 localScale = transform.localScale;
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Vector3 scale = new Vector3(localScale.x + scaleFactor,
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localScale.y + scaleFactor,
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localScale.z + scaleFactor);
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//最小缩放到 0.3 倍 最大1.5倍
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if (scale.x > MinScale && scale.x < MaxScale)
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{
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transform.localScale = scale;//赋新值
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}
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//记住最新的触摸点，下次使用
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oldTouch1 = newTouch1;
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oldTouch2 = newTouch2;
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}
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}
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}
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}
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}
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