FireDrillSystem_GuiGang_WDGC/Assets/Scripts/Common/OperationalPreparation/CloneFireDeployPublicArrowTool.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using AX.MessageSystem;
using AX.InputSystem;
using AX.NetworkSystem;
using System;
using UnityEngine.UI;

/// <summary>
/// 作战部署公用工具的克隆
/// </summary>
public class CloneFireDeployPublicArrowTool : CloneBase
{
    //UIRoot
    private Canvas canvas;
    //UI相机
    private Camera uiCamera;
    //作战部署顶视图UI
    private Transform FireDeployRawImage;
    //作战部署顶视图相机
    private Camera FireDeployCamera;

    private Vector3 prevMousePos = Vector3.zero;//前一个鼠标点
    private Vector3 currMousePos = Vector3.zero;//当前鼠标点

    private void Awake()
    {
        canvas = GameObject.Find("Canvas").GetComponent<Canvas>();
        uiCamera = GameObject.Find("UICamera").GetComponent<Camera>();
        FireDeployRawImage = GameObject.Find("OperationalPreparations/MainWindow/RawImage").transform;
        FireDeployCamera = GameObject.Find("FireDeployCamera").GetComponent<Camera>();
    }

    private void Start()
    {
        
    }

    public override void Execute(IMessage obj)
    {
        var gameObjID = (long)obj.Sender;
        var data = ((CloneCmdArgs)obj.Data);

        if (data.cloneObjType == cloneObjType)
        {
            var mousePositon = data.mousePosition;

            if (prevMousePos == Vector3.zero)
            {
                prevMousePos = mousePositon;
            }
            else
            {
                currMousePos = mousePositon;
            }

            if (prevMousePos == Vector3.zero || currMousePos == Vector3.zero)
            {
                return;
            }

            var distance = Vector3.Distance(prevMousePos, currMousePos);
            if (Vector3.Distance(prevMousePos, currMousePos) < 2)
            {
                return;
            }

            var divdieMousePos = (prevMousePos + currMousePos) / 2;

            //获取鼠标点击的点在UI上的坐标
            Vector2 mousePosOnUI;
            RectTransformUtility.ScreenPointToLocalPointInRectangle(
                FireDeployRawImage.transform as RectTransform,
                divdieMousePos,
                canvas.worldCamera,
                out mousePosOnUI);

            //获取作战部署顶视图Ui位置（中心点）在UI上的坐标
            Vector2 FireDeployRawImagePos;
            RectTransformUtility.ScreenPointToLocalPointInRectangle(
                FireDeployRawImage.transform as RectTransform,
                uiCamera.WorldToScreenPoint(FireDeployRawImage.position),
                canvas.worldCamera,
                out FireDeployRawImagePos);

            //克隆点到作战部署顶视图中心点在UI上的偏移量
            Vector2 offset = mousePosOnUI - FireDeployRawImagePos;

            //视口大小高与视口渲染的顶视图UI高的比例
            var factor_y = (FireDeployCamera.orthographicSize * 2) /
                FireDeployRawImage.GetComponent<RectTransform>().sizeDelta.y;
            //视口大小长与视口渲染的顶视图UI长的比例
            var factor_x = (FireDeployCamera.orthographicSize * 2) * FireDeployCamera.aspect /
                FireDeployRawImage.GetComponent<RectTransform>().sizeDelta.x;


            //顶视图相机的局部坐标系中相对于其中心点的偏移量
            Vector3 localOffset = new Vector3(offset.x * factor_x, offset.y * factor_y, 0);
            //鼠标点击在作战部署顶视图上的点映射到世界坐标系中的点
            Vector3 objWorldPos = FireDeployCamera.transform.TransformPoint(localOffset);

            var clonedObj = GameObject.Instantiate(clonePrefab, transform) as GameObject;
            clonedObj.GetComponent<RectTransform>().localPosition = mousePosOnUI;
            
            clonedObj.transform.right = ((currMousePos - prevMousePos)).normalized;//改变朝向;

            Vector2 prevMousePosOnUI = Vector2.zero;
            if (prevMousePos != Vector3.zero)
            {
                RectTransformUtility.ScreenPointToLocalPointInRectangle(
                FireDeployRawImage.transform as RectTransform,
                prevMousePos,
                canvas.worldCamera,
                out prevMousePosOnUI);
            }
            Vector2 currMousePosOnUI = Vector2.zero;
            if (currMousePos != Vector3.zero)
            {
                RectTransformUtility.ScreenPointToLocalPointInRectangle(
                FireDeployRawImage.transform as RectTransform,
                currMousePos,
                canvas.worldCamera,
                out currMousePosOnUI);
            }

            var distanceOnUI = Vector2.Distance(prevMousePosOnUI, currMousePosOnUI);
            clonedObj.GetComponent<RectTransform>().sizeDelta =
                new Vector2(distanceOnUI, clonedObj.GetComponent<RectTransform>().sizeDelta.y);

            clonedObj.transform.Find("Background").GetComponent<RectTransform>().sizeDelta =
                new Vector2(distanceOnUI, clonedObj.transform.Find("Background").GetComponent<RectTransform>().sizeDelta.y);

            clonedObj.transform.Find("Background/Checkmark").GetComponent<RectTransform>().sizeDelta =
                new Vector2(distanceOnUI, clonedObj.transform.Find("Background/Checkmark").GetComponent<RectTransform>().sizeDelta.y);

            //var factor = distance / clonedObj.GetComponent<RectTransform>().sizeDelta.x;
            //clonedObj.GetComponent<RectTransform>().sizeDelta =
            //    new Vector2(clonedObj.GetComponent<RectTransform>().sizeDelta.x * factor * 2f,
            //    clonedObj.GetComponent<RectTransform>().sizeDelta.y);

            //clonedObj.transform.Find("Background").GetComponent<RectTransform>().sizeDelta =
            //    new Vector2(clonedObj.transform.Find("Background").GetComponent<RectTransform>().sizeDelta.x * factor * 2f,
            //    clonedObj.transform.Find("Background").GetComponent<RectTransform>().sizeDelta.y);

            //clonedObj.transform.Find("Background/Checkmark").GetComponent<RectTransform>().sizeDelta =
            //    new Vector2(clonedObj.transform.Find("Background/Checkmark").GetComponent<RectTransform>().sizeDelta.x * factor * 2f,
            //    clonedObj.transform.Find("Background/Checkmark").GetComponent<RectTransform>().sizeDelta.y);

            BaseGameObjInfo baseObjInfo = clonedObj.GetComponent<BaseGameObjInfo>();
            baseObjInfo.gameObjType = cloneObjType;
            baseObjInfo.UserID = CurrentUserInfo.mySelf.Id;

            clonedObj.GetComponent<PublicToolMessage>().objWorldPos = objWorldPos;

            prevMousePos = currMousePos = Vector3.zero;
        }
    }
}