ImageTarget动态创建

最新推荐文章于 2020-11-02 12:14:16 发布

littlebeeee

最新推荐文章于 2020-11-02 12:14:16 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/littlebeeee/article/details/78878680

本文介绍如何使用EasyAR SDK在Unity中动态加载AR目标，包括从图片、JSON文件及JSON字符串加载Image Target的方法，并展示了如何将3D模型绑定到识别的目标上。

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using UnityEngine;
using System.Linq;
using EasyAR;

namespace Sample
{
/***固定格式无需更改******/
public class HelloARTarget : MonoBehaviour
{
private const string title = "Please enter KEY first!";
private const string boxtitle = "===PLEASE ENTER YOUR KEY HERE===";
private const string keyMessage = ""
+ "Steps to create the key for this sample:\n"
+ " 1. login www.easyar.com\n"
+ " 2. create app with\n"
+ " Name: HelloARMultiTarget-MultiTracker (Unity)\n"
+ " Bundle ID: cn.easyar.samples.unity.helloarmultitarget.mt\n"
+ " 3. find the created item in the list and show key\n"
+ " 4. replace all text in TextArea with your key";

private void Awake()//唤醒
{
if (FindObjectOfType<EasyARBehaviour>().Key.Contains(boxtitle))
{
#if UNITY_EDITOR
UnityEditor.EditorUtility.DisplayDialog(title, keyMessage, "OK");
#endif
Debug.LogError(title + " " + keyMessage);
}
}
/****固定格式无需更改******/

void CreateTarget(string targetName, out SampleImageTargetBehaviour targetBehaviour)//通过图片动态加载ImageTarget
{
GameObject Target = new GameObject(targetName);
Target.transform.localPosition = Vector3.zero;
targetBehaviour = Target.AddComponent<SampleImageTargetBehaviour>();
}

void Start()
{
SampleImageTargetBehaviour targetBehaviour;

ImageTrackerBehaviour tracker = null;//初始化Target

foreach (var behaviour in FindObjectsOfType<ImageTrackerBehaviour>())
{
if (behaviour.name == "ImageTracker-3")
tracker = behaviour;
}
if (!tracker)
return;
tracker.SimultaneousNum = 2;
//分为图片动态创建和json动态创建

// dynamically load from image (*.jpg, *.png)
CreateTarget("argame01", out targetBehaviour);//绑定一个tracker，必须绑定了，才能被tracker追踪，然后识别里面的target。调用之前的createTarget方法，创建ImageTargetBaseBehaviour
targetBehaviour.Bind(tracker);
targetBehaviour.SetupWithImage("sightplus/argame01.jpg", StorageType.Assets, "argame01", new Vector2());
GameObject duck02_1 = Instantiate(Resources.Load("duck02")) as GameObject; //识别出图片后，让模型的坐标跟着imagetarget object的坐标走
duck02_1.transform.parent = targetBehaviour.gameObject.transform;

// dynamically load from json file
CreateTarget("argame00", out targetBehaviour);
targetBehaviour.Bind(tracker);
targetBehaviour.SetupWithJsonFile("targets.json", StorageType.Assets, "argame");
GameObject duck02_2 = Instantiate(Resources.Load("duck02")) as GameObject;
duck02_2.transform.parent = targetBehaviour.gameObject.transform;

// dynamically load from json string
string jsonString = @"
{
""images"" :
[
{
""image"" : ""sightplus/argame02.jpg"",
""name"" : ""argame02""
}
]
}
";
CreateTarget("argame02", out targetBehaviour);
targetBehaviour.Bind(tracker);
targetBehaviour.SetupWithJsonString(jsonString, StorageType.Assets, "argame02");
GameObject duck02_3 = Instantiate(Resources.Load("duck02")) as GameObject;
duck02_3.transform.parent = targetBehaviour.gameObject.transform;

// dynamically load all targets from json file
var targetList = ImageTargetBaseBehaviour.LoadListFromJsonFile("targets2.json", StorageType.Assets);
foreach (var target in targetList.Where(t => t.IsValid).OfType<ImageTarget>())
{
CreateTarget("argame03", out targetBehaviour);
targetBehaviour.Bind(tracker);
targetBehaviour.SetupWithTarget(target);
GameObject duck03 = Instantiate(Resources.Load("duck03")) as GameObject;
duck03.transform.parent = targetBehaviour.gameObject.transform;
}

targetBehaviour = null;
}
}
}