大家好,我目前正在使用 unity 和 vuforia sdk 创建我的第一个 AR 应用程序。我已经了解了一些 AR 基础知识,您需要一个图像目标来显示 3d 对象或与图像目标关联的信息。我有这个 AR 旋转立方体
此示例应用程序在找到有效的图像目标时工作,并且 3d 立方体将显示并开始旋转。我的问题是,当手机扫描图像目标时,应该有一条消息说“正在扫描图像目标”,当找到它时会显示“找到图像目标”,它会显示一个弹出按钮“显示”,当按下立方体时会出现。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class RotateScript : MonoBehaviour {
public int speed;
//Update is called once per frame
void Update () {
transform.Rotate (new Vector3 (0, Time.deltaTime * speed, 0));
}
}
更新:
我找到了这个脚本并对其进行了一些修改以在屏幕上方显示 UI 文本,我打算在未检测到图像目标时将文本更改为“图像目标丢失”,当图像目标存在时将文本更改为“找到图像目标”。我将脚本放在图像目标预制件上,但它显示错误UI Text Error。关于我做错了什么的任何建议。谢谢
示例代码
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using Vuforia;
public class TextScript : MonoBehaviour, ITrackableEventHandler {
private TrackableBehaviour mTrackableBehaviour;
//Declares a UI text
Text uiText;
void Start () {
mTrackableBehaviour = GetComponent<TrackableBehaviour>();
if (mTrackableBehaviour)
{
mTrackableBehaviour.RegisterTrackableEventHandler(this);
}
//uiText = gameObject.GetComponent<Text> ();
}
public void OnTrackableStateChanged(
TrackableBehaviour.Status previousStatus,
TrackableBehaviour.Status newStatus)
{
if (newStatus == TrackableBehaviour.Status.DETECTED ||
newStatus == TrackableBehaviour.Status.TRACKED)
{
uiText.text = "Image Target Found";
}
else
{
uiText.text = "Image Target Lost";
}
}
}
更新(2017 年 10 月 30 日)
很抱歉,如果我更新晚了,我已经尝试了您提供的所有解决方案,但仍然无法正常工作。代码的名称是 TextScript,我已将其附加到图像目标,但结果仍然不成功。这是示例代码。
文本脚本
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using Vuforia;
public class TextScript : MonoBehaviour, ITrackableEventHandler {
private TrackableBehaviour mTrackableBehaviour;
//Declares a UI text
public Text uiText;
void Start () {
mTrackableBehaviour = GetComponent<TrackableBehaviour>();
if (mTrackableBehaviour)
{
mTrackableBehaviour.RegisterTrackableEventHandler(this);
}
uiText = gameObject.GetComponent<Text> ();
}
public void OnTrackableStateChanged(
TrackableBehaviour.Status previousStatus,
TrackableBehaviour.Status newStatus)
{
if (newStatus == TrackableBehaviour.Status.DETECTED ||
newStatus == TrackableBehaviour.Status.TRACKED ||
newStatus == TrackableBehaviour.Status.EXTENDED_TRACKED)
{
OnTrackingFound();
uiText.text = "Image Target Found";
}
else
{
OnTrackingLost();
//uiText.text = "Image Target Lost";
}
}
private void OnTrackingFound()
{
Renderer[] rendererComponents = GetComponentsInChildren<Renderer>(true);
Collider[] colliderComponents = GetComponentsInChildren<Collider>(true);
// Enable rendering:
foreach (Renderer component in rendererComponents)
{
uiText.text = "Image Target Found";
component.enabled = true;
}
// Enable colliders:
foreach (Collider component in colliderComponents)
{
uiText.text = "Image Target Found";
component.enabled = true;
}
Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " found");
}
private void OnTrackingLost()
{
Renderer[] rendererComponents = GetComponentsInChildren<Renderer>(true);
Collider[] colliderComponents = GetComponentsInChildren<Collider>(true);
// Disable rendering:
foreach (Renderer component in rendererComponents)
{
uiText.text = "Image Target Lost";
component.enabled = false;
}
// Disable colliders:
foreach (Collider component in colliderComponents)
{
uiText.text = "Image Target Lost";
component.enabled = false;
}
Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " lost");
}
}
附言
我已经将文本 UI 命名为 Scanning,因此当我按下播放时,文本已经显示所述单词。但是当它找到图像目标时,文本不会改变。请各位我非常需要你的帮助,如果有不需要的代码,请随时编辑或评论,以便我可以删除它。谢谢