VRTK功能教学（二）：Unity3DVRTK手柄瞬移和UI交互射线切换功能丨3D模型射线交互切换丨直线和曲线的切换

VRTK功能教学（二）：Unity3DVRTK手柄瞬移和UI交互射线切换功能丨3D模型射线交互切换丨直线和曲线的切换

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介绍

本文：针对VRTK的手柄交互功能，瞬移和UI交互的时候两个射线无法有效切换的问题

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代码展示

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using VRTK;

public class VRTK_SwitchPointLine : MonoBehaviour
{
    
    
    public VRTK_BezierPointerRenderer bezierRender;
    public VRTK_StraightPointerRenderer straightRender;
    public VRTK_Pointer mainPointer;
    public string InteractHoverTag = "ModeObj";
    private VRTK_ControllerEvents mEvent;
    private VRTK_ShotLine cacheShowLabel;

    public UnityAction<string> r_RayAction = null;

    // public UnityEvent TipAccordingObjevent;

    private void Awake()
    {
    
    

        mEvent = GetComponent<VRTK_ControllerEvents>();
        mainPointer.activateOnEnable = false;
        bezierRender.enabled = false;
        straightRender.enabled = false;


    }


    void Update()
    {
    
    
        Ray ray = new Ray(transform.position, transform.forward);
        if (Physics.Raycast(ray, out var hit))
        {
    
    

            VRTK_ShotLine temp = hit.transform.GetComponent<VRTK_ShotLine>();
            //直线射线物体使用方式为轻触触摸板 对准带着规定标签的物体 射线转换为直线
            if (temp != null && mEvent.touchpadTouched)
            {
    
    

                if (hit.transform.tag.Equals(this.InteractHoverTag) || hit.transform.tag.Equals("PositionControl"))
                {
    
    
                    temp.LineEnter(this.mEvent);

                    if (mEvent.triggerClicked)
                    {
    
    
                        Debug.Log(hit.collider.name);
                        r_RayAction?.Invoke(hit.collider.name);
                    }
                }

                if (cacheShowLabel == null)
                {
    
    
                    temp.LineEnter();
                }
                else
                if (cacheShowLabel != null && cacheShowLabel != temp)
                {
    
    
                    cacheShowLabel.LineExit();
                    temp.LineEnter();
                }

                cacheShowLabel = temp;
                mainPointer.pointerRenderer = straightRender;
            }
            else
            {
    
    
                //否则射线为曲线
                if (cacheShowLabel != null)
                {
    
    
                    cacheShowLabel.LineExit();
                    cacheShowLabel = null;
                }
                //判断检测到Ui的交互时射线转换为直线
                if (hit.transform.GetComponent<VRTK_UICanvas>())
                {
    
    
                    mainPointer.pointerRenderer = straightRender;

                }
                else if (hit.transform.tag == "canPoint")
                {
    
    
                    mainPointer.pointerRenderer = straightRender;
                }
                else
                {
    
    
                    mainPointer.pointerRenderer = bezierRender;
                }

            }
        }
        else
        {
    
    
            if (cacheShowLabel != null)
            {
    
    
                cacheShowLabel.LineExit();
                cacheShowLabel = null;
            }
            mainPointer.pointerRenderer = bezierRender;
        }

        if (mEvent != null && cacheShowLabel != null)
        {
    
    
            if (mEvent.triggerClicked)
            {
    
    
                cacheShowLabel.Execute();
                cacheShowLabel = null;
            }
        }
        if (mainPointer.pointerRenderer == straightRender)
        {
    
    
            bezierRender.enabled = false;
            straightRender.enabled = true;
            mainPointer.activateOnEnable = true;
            mainPointer.holdButtonToActivate = false;
            mainPointer.activationButton = VRTK_ControllerEvents.ButtonAlias.Undefined;
            mainPointer.selectionButton = VRTK_ControllerEvents.ButtonAlias.Undefined;
            straightRender.cursorVisibility = VRTK_BasePointerRenderer.VisibilityStates.AlwaysOn;
            straightRender.tracerVisibility = VRTK_BasePointerRenderer.VisibilityStates.AlwaysOn;
        }
        else
        {
    
    
            bezierRender.enabled = true;
            straightRender.enabled = false;
            mainPointer.activateOnEnable = false;
            mainPointer.holdButtonToActivate = true;
            mainPointer.activationButton = VRTK_ControllerEvents.ButtonAlias.TouchpadPress;

            mainPointer.selectionButton = VRTK_ControllerEvents.ButtonAlias.TouchpadPress;
            straightRender.cursorVisibility = VRTK_BasePointerRenderer.VisibilityStates.OnWhenActive;
            straightRender.tracerVisibility = VRTK_BasePointerRenderer.VisibilityStates.OnWhenActive;
        }
    }
}

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还有这一个脚本，这个脚本本来是为了模型交互使用的，但是如果不加此脚本会报错很多，一个个删除挺麻烦的，如果不需要模型交互把此脚本创建出来不用管就好了

using VRTK;
public interface VRTK_ShotLine
{
    
    
    void LineEnter();

    void LineExit();

    void Execute();

    void LineEnter(VRTK_ControllerEvents events);
}

配置方法

基础配置

首先我们手柄的控制器上挂载的组件不能少

其中的Switch Point Line为我们编译的脚本
三个直接挂载手柄控制器就可以

UI交互配置

UI交互的话除了要配置基础配置还要在想要交互的Canvas上挂载脚本UICanvas

3D物体模型交互

模型交互除了要配置基础配置以外还需要把我们的VRTK_ShotLine脚本挂载在需要交互的物体身上，还有标签，就是我们脚本中定义的名称ModeObj。新手注意：一定要添加碰撞体。

总结

例如：以上就是今天要讲的内容，本文介绍了VRTk的手柄射线功能使用。