116 lines
5.2 KiB
C#
116 lines
5.2 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class ScaleByTwoFinger : MonoBehaviour
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{
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public Transform target; //目标
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bool isInit;
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Vector3 touch1, touch2, oriPos, pos;
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float scale, disX, disY, oriScale;
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public float scaleSpeed = 1;
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public bool isLimitScale;
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public float min, max;
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private void Update()
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{
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if (UI_manage.inst.FBX_obj.transform.childCount != 0)
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{
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//不是双指就关闭
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if (Input.touchCount != 2)
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{
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isInit = false;
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}
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//初始化
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if (Input.touchCount == 2 && !isInit)
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{
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//两指点位
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touch1 = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
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touch2 = Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position);
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//目标初始点位
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oriPos = new Vector3(UI_manage.inst.FBX_obj.transform.GetChild(0).position.x, UI_manage.inst.FBX_obj.transform.GetChild(0).position.y, UI_manage.inst.FBX_obj.transform.GetChild(0).position.z);
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//两指中点
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pos = new Vector3((Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position).x + Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position).x) / 2, (Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position).y + Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position).y) / 2, 0);
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//两指中点和目标距离
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disX = pos.x - oriPos.x;
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disY = pos.y - oriPos.y;
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oriScale = UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x;
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isInit = true;
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}
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if (Input.touchCount == 2)
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{
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//两指缩放比例
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scale = Vector3.Distance(Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position), Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position)) / Vector3.Distance(touch1, touch2);
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//利用scaleSpeed控制缩放速度
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scale = (scale - 1) * scaleSpeed;
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//给缩放比例加限制
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if (isLimitScale && UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x <= min && scale < 0)
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return;
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if (isLimitScale && UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x >= max && scale > 0)
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return;
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//缩放目标大小
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UI_manage.inst.FBX_obj.transform.GetChild(0).localScale = new Vector3(oriScale + scale, oriScale + scale, oriScale + scale);
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//改变目标位置，让位置保持不变
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UI_manage.inst.FBX_obj.transform.GetChild(0).position = new Vector3(oriPos.x - ((UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x - oriScale) * disX), oriPos.y - ((UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.y - oriScale) * disY), UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.z - oriScale);
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}
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}
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////不是双指就关闭
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//if (Input.touchCount != 2)
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//{
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// isInit = false;
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//}
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////初始化
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//if (Input.touchCount == 2 && !isInit)
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//{
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// //两指点位
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// touch1 = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
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// touch2 = Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position);
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// //目标初始点位
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// oriPos = new Vector3(transform.position.x, transform.position.y, 0);
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// //两指中点
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// pos = new Vector3((Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position).x + Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position).x) / 2, (Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position).y + Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position).y) / 2, 0);
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// //两指中点和目标距离
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// disX = pos.x - oriPos.x;
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// disY = pos.y - oriPos.y;
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// oriScale = transform.localScale.x;
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// isInit = true;
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//}
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//if (Input.touchCount == 2)
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//{
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// //两指缩放比例
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// scale = Vector3.Distance(Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position), Camera.main.ScreenToWorldPoint(Input.GetTouch(1).position)) / Vector3.Distance(touch1, touch2);
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// //利用scaleSpeed控制缩放速度
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// scale = (scale - 1) * scaleSpeed;
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// //给缩放比例加限制
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// if (isLimitScale && UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x <= min && scale < 0)
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// return;
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// if (isLimitScale && UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x >= max && scale > 0)
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// return;
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// //缩放目标大小
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// UI_manage.inst.FBX_obj.transform.GetChild(0).localScale = new Vector3(oriScale + scale, oriScale + scale, oriScale + scale);
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// //改变目标位置，让位置保持不变
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// transform.position = new Vector3(oriPos.x - ((UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.x - oriScale) * disX), oriPos.y - ((UI_manage.inst.FBX_obj.transform.GetChild(0).localScale.y - oriScale) * disY), 0);
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//}
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}
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}
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