在 Unity3d 中按 Vuforia 虚拟按钮不会旋转立方体

Question

我在 Vuforia 的图像目标上添加了立方体。我还在图像目标上添加了虚拟按钮。现在我想通过按虚拟按钮来旋转立方体。为此，我实现了以下脚本。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Vuforia;

public class rotate : MonoBehaviour, IVirtualButtonEventHandler {

    public GameObject vbtn;
    public GameObject cube;
    public Renderer rend;

    // Use this for initialization
    void Start () {

        vbtn = GameObject.Find ("virtualbtn5");
        vbtn.GetComponent<VirtualButtonBehaviour> ().RegisterEventHandler (this);
        cube = GameObject.Find ("Cube");
        rend = cube.GetComponent<Renderer>();   
    }

    public void OnButtonPressed(VirtualButtonBehaviour vb){

        Debug.Log ("Button pressed");
        cube.transform.Rotate (new Vector3(0,Time.deltaTime*1000,0));
        rend.material.color = Color.blue;

    }

    public void OnButtonReleased(VirtualButtonBehaviour vb){

        Debug.Log ("Button released");
        rend.material.color = Color.red;
    }       

}

该按钮似乎工作正常，因为onButtonPressed 函数中的Debug.Log ("Button pressed"); 和rend.material.color = Color.blue; 语句工作正常。但是cube.transform.Rotate (new Vector3(0,Time.deltaTime*1000,0)); 用于旋转立方体不起作用。

简单的是，按钮可以改变立方体的颜色但不能旋转立方体。

所以问题是如何通过按下 vuforia 的虚拟按钮来旋转立方体。

问题更新：

我也尝试了以下代码，但按下按钮时立方体仍然不旋转。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Vuforia;

public class rotate : MonoBehaviour, IVirtualButtonEventHandler {

    public GameObject vbtn;
    public GameObject cube;
    public Renderer rend;
    public bool rotateit;
    public float speed;
    // Use this for initialization
    void Start () {

        vbtn = GameObject.Find ("virtualbtn5");
        vbtn.GetComponent<VirtualButtonBehaviour> ().RegisterEventHandler (this);
        cube = GameObject.Find ("Cube");
        speed = 100f;

        rend = cube.GetComponent<Renderer>();
        rotateit = false;


    }


    void Update(){


        if (rotateit) {

            cube.transform.Rotate(new Vector3(0, Time.deltaTime * speed, 0));
        }


    }


    public void OnButtonPressed(VirtualButtonBehaviour vb){

        //Debug.Log ("Button pressed");
        //cube.transform.RotateAround(cube.transform.position, new Vector3(0, 1, 0), 10000f * Time.deltaTime);
        //cube.transform.Rotate (new Vector3(0,Time.deltaTime*1000,0));
        rend.material.color = Color.blue;
        rotateit = true;
        Debug.Log ("Button pressed "+rotateit);

    }

    public void OnButtonReleased(VirtualButtonBehaviour vb){

        //Debug.Log ("Button released");
        rend.material.color = Color.red;
        rotateit = false;
        Debug.Log ("Button released "+rotateit);
    }



}

也看看控制台窗口

Answer 1

如果您想在按住按钮时旋转每一帧但在释放时停止，则使用布尔变量来执行此操作。将其设置为OnButtonPressed 中的true 和OnButtonReleased 中的false。检查Update函数中true中的这个标志，然后旋转立方体。

public GameObject vbtn;
public GameObject cube;
public Renderer rend;
bool pressed = false;
public float speed = 100f;

// Use this for initialization
void Start()
{

    vbtn = GameObject.Find("virtualbtn5");
    vbtn.GetComponent<VirtualButtonBehaviour>().RegisterEventHandler(this);
    cube = GameObject.Find("Cube");
    rend = cube.GetComponent<Renderer>();
}

public void OnButtonPressed(VirtualButtonBehaviour vb)
{

    Debug.Log("Button pressed");
    pressed = true;
    rend.material.color = Color.blue;

}

public void OnButtonReleased(VirtualButtonBehaviour vb)
{

    Debug.Log("Button released");
    pressed = false;
    rend.material.color = Color.red;
}

void Update()
{
    if (pressed)
        cube.transform.Rotate(new Vector3(0, Time.deltaTime * speed, 0));
}