• 射线碰撞【拖拽物体img,点击后在固定位置显示A(工具),点击A显示B(Toggle组成的表),关闭B显示C(工具)】


    [添加脚本(Move)]

    //该脚本挂在img的父物体上

    using UnityEngine;
    using System.Collections;
    using UnityEngine.UI;

    //定义枚举

    public enum Tools
    {
      空,
      塞尺
    }

    public class Move : MonoBehaviour
    {  //放置img的父物体(窗体,如上图所示)
      public GameObject LittleWin1;

      public GameObject Tog1;

          //给窗体设置一个初始位置和目标位置(实现缓动)

      public GameObject TargetPos;
      public GameObject StartPos;

     //Tools类型(枚举),将变量 TOOLS和temoTools 初始化为"空";
      public Tools TOOLS = Tools.空;
      public Tools tempTools = Tools.空;

      Vector3 v;
      void Awake()
      {
        LittleWin1.SetActive(false);
        LittleWin2.SetActive(false);
      }
      void Start ()
      {
        Tog1.GetComponent<Toggle>().onValueChanged.AddListener(delegate
        {
          this.OnClick(Tog1);
        });
      }
      void OnClick(GameObject tog)
      {   
        LittleWin1.SetActive(Tog1 == tog);

               //点击Toggle显示窗体LittleWin(未实现窗体缓动出现的效果)
        if (Tog1.GetComponent<Toggle>().isOn == true)
        {
          LittleWin1.transform.position = Vector3.MoveTowards(TargetPos.transform.position, StartPos.transform.position, 200000f * Time.deltaTime);
        }
        else if (Tog1.GetComponent<Toggle>().isOn == false)
        {
          LittleWin1.transform.position = Vector3.MoveTowards(TargetPos.transform.position, StartPos.transform.position, 200000f * Time.deltaTime);

        }


      }
    }

    [添加脚本(DragTools)]

    //将脚本挂在img上(即要拖拽出来的工具图片img上)

    using System.Collections.Generic;
    using UnityEngine;
    using UnityEngine.EventSystems;
    using UnityEngine.UI;

    [RequireComponent(typeof(Image))]
    public class DragTools : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
    {
      public bool dragOnSurfaces = true;

         //Move类的move对象
      public Move moves;
      public Tools tools;
      PointerEventData eventData;
      private GameObject m_DraggingIcons;
      private RectTransform m_DraggingPlanes;

      public void OnBeginDrag(PointerEventData eventData)
      {
      var canvas = FindInParents<Canvas>(gameObject);
      if (canvas == null)
      return;

      // We have clicked something that can be dragged.
      // What we want to do is create an icon for this.
      m_DraggingIcons = new GameObject("icon");
      Debug.Log("生成图片");
      moves.TOOLS = tools;
      m_DraggingIcons.transform.SetParent (canvas.transform, false);

      //移动该变换到此局部变换列表的末尾。
      m_DraggingIcons.transform.SetAsLastSibling();

      var image = m_DraggingIcons.AddComponent<Image>();
      // The icon will be under the cursor.
      // We want it to be ignored by the event system.
      var group = m_DraggingIcons.AddComponent<CanvasGroup>();
      group.blocksRaycasts = false;
      m_DraggingIcons.AddComponent<MouseFollow>();

      image.sprite = GetComponent<Image>().sprite;
      image.SetNativeSize();
      m_DraggingIcons.GetComponent<Image>().SetNativeSize();

      if (dragOnSurfaces)
      m_DraggingPlanes = transform as RectTransform;
      else
      m_DraggingPlanes = canvas.transform as RectTransform;

      SetDraggedPosition(eventData);
      }

      public void OnDrag(PointerEventData eventData)
      {
        if (m_DraggingIcons != null)
        SetDraggedPosition(eventData);
      }

      private void SetDraggedPosition(PointerEventData eventData)
      {
        if (dragOnSurfaces && eventData.pointerEnter != null && eventData.pointerEnter.transform as RectTransform != null)
        m_DraggingPlanes= eventData.pointerEnter.transform as RectTransform;

        var rt = m_DraggingIcons.GetComponent<RectTransform>();
        Vector3 globalMousePos;
        if (RectTransformUtility.ScreenPointToWorldPointInRectangle(m_DraggingPlanes, eventData.position, eventData.pressEventCamera, out globalMousePos))
        {
          rt.position = globalMousePos;
          rt.rotation = m_DraggingPlanes.rotation;
        }
      }
      void Update()
      {
        if (Input.GetMouseButtonDown(0) && m_DraggingIcons != null)
        {
          Destroy(m_DraggingIcons);

          m_DraggingIcons = null;
          Debug.Log("结束拖拽");
          moves.TOOLS = moves.tempTools;
        }
      }
      public void OnEndDrag(PointerEventData eventData)
      {
        this.eventData = eventData;
      }

      static public T FindInParents<T>(GameObject go) where T : Component
      {
        if (go == null) return null;
        var comp = go.GetComponent<T>();

        if (comp != null)
        return comp;
        var t = go.transform.parent;
        while (t != null && comp == null)
        {
          comp = t.gameObject.GetComponent<T>();
          t = t.parent;
        }
        return comp;
      }
    }

    [添加脚本(newLine)]

    //该脚本挂在在MainCamera上

    using UnityEngine;
    using UnityEngine.UI;

    public class newLine : MonoBehaviour
    {
    public Transform explosion;
    public Transform Tool;
    //用于放置工具的父物体(场景中的整个3D模型)
    public Transform DeskTran;
    //需点击,显示的目标工具
    public Transform targetTran;
    //Move 类的move对象
    public Move move;
    //器械展示平台
    public Transform Ruler;
    //用于放置尺子的父物体
    public Transform TargetRuler;


    //鼠标跟随
    public Camera MainCamera;
    public Canvas canvas;
    //RectTransform rectTransform;

    public GameObject AddSizeWin;

    void Update()
    {
      //GameObject game = GameObject.Find("SaiChi(Clone)");//寻找任意物体
      //GameObject game=transform.Find("***");//寻找子物体下
      //获取鼠标点击事件
      if (Input.GetMouseButtonDown(0))
      {
        //定义一条射线,从摄像机发出到点击坐标的射线
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;
        //如果射线发生碰撞
        //Tool.transform.position = Input.mousePosition;
        //Physics.Raycast(射线,碰撞点,射线距离)
        if (Physics.Raycast(ray, out hit, 100))
        {
          //if (Tool == null && move.TOOLS == Tools.塞尺)
          if ( move.TOOLS == Tools.塞尺)
          {//划出射线,只有在scene视图中才能看到
           //Debug.DrawLine(ray.origin, hit.point);

           #region 方法一:射线检测并进行实例化
           GameObject gameObj = hit.collider.gameObject;
          //实例化物体
          Transform theClonedExplosion;
          //hit.point为碰撞点的坐标;
          theClonedExplosion = Instantiate(explosion) as Transform;
          Tool = theClonedExplosion;
          //设置父物体
          Tool.parent = DeskTran;
          Tool.localEulerAngles = Vector3.zero;
          Tool.localPosition = targetTran.localPosition;
          #endregion

          #region 方法二 :直接通过显隐控制
          //Tool = targetTran;
          //targetTran.gameObject.SetActive(true);
          //Tool.parent = DeskTran;
          #endregion
          }
          //点击塞尺出现AddSizeWin窗体
          if (hit.transform.name.Contains("塞尺装配"))
          {
            AddSizeWin.SetActive(true);
            // Debug.Log(hit.transform.parent.name);
          }


          }
       }
      }
    }

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  • 原文地址:https://www.cnblogs.com/Cocomo/p/5632679.html
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