AR동물사전

Assets/Script/ImageTracker.cs

@@ -0,0 +1,99 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.XR.ARFoundation;
+using UnityEngine.XR.ARSubsystems;
+using ZXing;
+
+public class ImageTracker : MonoBehaviour
+{
+    ARCameraManager cameraManager;
+
+    [SerializeField] List<string> listName;
+    [SerializeField] List<GameObject> listAnimal;
+    [SerializeField] float spawnScale = 0.3f;
+    [SerializeField] float spawnDistance = 1.5f;
+
+    Dictionary<string, GameObject> dictPrefab = new();
+    Dictionary<string, GameObject> dictSpawn = new();
+
+    // 현재 소환된 QR 이름 추적
+    string currentName = "";
+
+    IBarcodeReader reader = new BarcodeReader();
+
+    void Awake()
+    {
+        cameraManager = FindFirstObjectByType<ARCameraManager>();
+
+        for (int i = 0; i < listName.Count; i++)
+            dictPrefab[listName[i]] = listAnimal[i];
+    }
+
+    void OnEnable() => StartCoroutine(ScanQR());
+    void OnDisable() => StopAllCoroutines();
+
+    IEnumerator ScanQR()
+    {
+        while (true)
+        {
+            yield return new WaitForSeconds(0.5f);
+
+            if (!cameraManager.TryAcquireLatestCpuImage(out var cpuImage)) continue;
+
+            using (cpuImage)
+            {
+                var tex = new Texture2D(cpuImage.width, cpuImage.height, TextureFormat.RGBA32, false);
+                var conversionParams = new XRCpuImage.ConversionParams(cpuImage, TextureFormat.RGBA32);
+                var buffer = tex.GetRawTextureData<byte>();
+                cpuImage.Convert(conversionParams, buffer);
+                tex.Apply();
+
+                var result = reader.Decode(tex.GetPixels32(), tex.width, tex.height);
+                Destroy(tex);
+
+                if (result == null) continue;
+                if (!dictPrefab.ContainsKey(result.Text)) continue;
+
+                string detected = result.Text;
+
+                // 같은 QR이면 무시
+                if (detected == currentName) continue;
+
+                SpawnCharacter(detected);
+            }
+        }
+    }
+
+    void SpawnCharacter(string name)
+    {
+        // 이전 동물 전부 Destroy
+        foreach (var key in new List<string>(dictSpawn.Keys))
+            DestroyCharacter(key);
+
+        Vector3 spawnPos = GetSpawnPosition();
+        var go = Instantiate(dictPrefab[name], spawnPos, Quaternion.identity);
+        go.transform.localScale = Vector3.one * spawnScale;
+
+        // 카메라를 바라보도록 회전
+        Vector3 lookDir = Camera.main.transform.position - spawnPos;
+        lookDir.y = 0;
+        go.transform.rotation = Quaternion.LookRotation(lookDir);
+
+        dictSpawn[name] = go;
+        currentName = name;
+    }
+
+    void DestroyCharacter(string name)
+    {
+        if (!dictSpawn.ContainsKey(name)) return;
+        Destroy(dictSpawn[name]);
+        dictSpawn.Remove(name);
+    }
+
+    Vector3 GetSpawnPosition()
+    {
+        Transform cam = Camera.main.transform;
+        return cam.position + cam.forward * spawnDistance;
+    }
+}