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using UnityEngine.XR.ARSubsystems; |
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using UnityEngine.XR.ARFoundation; |
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#if UNITY_EDITOR
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using UnityEditor; |
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using UnityEditor.Build; |
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using UnityEditor.Build.Reporting; |
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/// <summary>
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/// Each XRReferenceImage only stores a Guid, not a Texture2D.
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/// At build time, generate a list of source Texture2Ds and store references
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/// so that we will have them at runtime.
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/// </summary>
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class TrackedImageInfoManagerBuildProcessor : IPreprocessBuildWithReport |
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{ |
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public int callbackOrder { get { return 0; } } |
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public void OnPreprocessBuild(BuildReport report) |
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{ |
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var infoManagers = UnityEngine.Object.FindObjectsOfType<TrackedImageInfoManager>(); |
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if (infoManagers == null) |
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return; |
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foreach (var infoManager in infoManagers) |
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infoManager.RebuildDictionary(); |
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AssetDatabase.Refresh(); |
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} |
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} |
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#endif
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/// <summary>
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/// This component listens for images detected by the <c>XRImageTrackingSubsystem</c>
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/// and overlays some information as well as the source Texture2D on top of the
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/// detected image.
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set { m_DefaultTexture = value; } |
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} |
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/// <summary>
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/// A serializable container for Texture2D and XRReferenceImage pairs.
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/// This is used to associate a reference image with the source texture.
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/// </summary>
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[Serializable] |
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struct TextureReferenceImagePair |
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{ |
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[SerializeField] |
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public Texture2D texture; |
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[SerializeField] |
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public XRReferenceImage referenceImage; |
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public TextureReferenceImagePair(Texture2D texture, XRReferenceImage referenceImage) |
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{ |
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this.texture = texture; |
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this.referenceImage = referenceImage; |
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} |
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} |
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/// <summary>
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/// A serializable list of Texture2D-ReferenceImage pairs used to lookup
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/// a reference image's source Texture2D at runtime.
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/// </summary>
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[SerializeField, HideInInspector] |
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List<TextureReferenceImagePair> m_TextureReferenceImagePairs = new List<TextureReferenceImagePair>(); |
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Dictionary<Guid, Texture2D> m_Textures; |
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// Build a dictionary of Guid to Texture2D
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m_Textures = new Dictionary<Guid, Texture2D>(); |
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foreach (var pair in m_TextureReferenceImagePairs) |
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m_Textures[pair.referenceImage.guid] = pair.texture; |
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#if UNITY_EDITOR
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/// <summary>
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/// Rebuilds a serializable list of Texture2D-XRReferenceImage pairs.
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/// At runtime, this List is used to populate a dictionary.
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/// </summary>
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internal void RebuildDictionary() |
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{ |
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m_TextureReferenceImagePairs = new List<TextureReferenceImagePair>(); |
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var trackedImageManager = GetComponent<ARTrackedImageManager>(); |
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if (trackedImageManager != null && trackedImageManager.referenceLibrary != null) |
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{ |
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foreach (var referenceImage in trackedImageManager.referenceLibrary) |
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{ |
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var guid = referenceImage.guid; |
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var texturePath = AssetDatabase.GUIDToAssetPath(guid.ToString("N")); |
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if (string.IsNullOrEmpty(texturePath)) |
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{ |
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Debug.LogWarningFormat("Null or empty texturePath for image {0}", guid); |
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continue; |
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} |
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var texture = AssetDatabase.LoadAssetAtPath<Texture2D>(texturePath); |
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m_TextureReferenceImagePairs.Add(new TextureReferenceImagePair(texture, referenceImage)); |
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} |
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} |
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} |
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#endif
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void OnEnable() |
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{ |
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m_TrackedImageManager.trackedImagesChanged += OnTrackedImagesChanged; |
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// Update information about the tracked image
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var text = canvas.GetComponentInChildren<Text>(); |
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text.text = string.Format( |
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"trackableId\n{0}\ntrackingState: {1}\nGUID: {2}\nReference width: {3}\nDetected size: {4:0.0000}x{5:0.0000}", |
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trackedImage.trackableId, |
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"{0}\ntrackingState: {1}\nGUID: {2}\nReference size: {3} cm\nDetected size: {4} cm", |
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trackedImage.referenceImage.name, |
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trackedImage.referenceImage.width, |
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trackedImage.size.x, |
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trackedImage.size.y); |
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trackedImage.referenceImage.size * 100f, |
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trackedImage.size * 100f); |
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var planeParentGo = trackedImage.transform.GetChild(0).gameObject; |
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var planeGo = planeParentGo.transform.GetChild(0).gameObject; |
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trackedImage.transform.localScale = new Vector3(trackedImage.size.x, 1f, trackedImage.size.y); |
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// Set the texture
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var meshRenderer = planeGo.GetComponentInChildren<MeshRenderer>(); |
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// Look up the texture by Guid
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Texture2D texture; |
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if (!m_Textures.TryGetValue(trackedImage.referenceImage.guid, out texture)) |
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texture = defaultTexture; |
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meshRenderer.material.mainTexture = texture; |
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var material = planeGo.GetComponentInChildren<MeshRenderer>().material; |
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material.mainTexture = (trackedImage.referenceImage.texture == null) ? defaultTexture : trackedImage.referenceImage.texture; |
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} |
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else |
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{ |
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Tim Mowrer
5 年前
