live2D (sdk가 6.5 미지원으로 sprite로 대응)

Assets/Live2D/Cubism/Framework/LookAt/CubismLookCenterArtMesh.cs

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+/**
+ * Copyright(c) Live2D Inc. All rights reserved.
+ *
+ * Use of this source code is governed by the Live2D Open Software license
+ * that can be found at https://www.live2d.com/eula/live2d-open-software-license-agreement_en.html.
+ */
+
+
+using Live2D.Cubism.Core;
+using Live2D.Cubism.Rendering;
+using UnityEngine;
+
+
+namespace Live2D.Cubism.Framework.LookAt
+{
+    /// <summary>
+    /// Provides the center position for look-at calculations using an ArtMesh (CubismDrawable).
+    /// </summary>
+    [DisallowMultipleComponent]
+    public class CubismLookCenterArtMesh : MonoBehaviour, ICubismLookCenter
+    {
+        /// <summary>
+        /// Target drawable to calculate the center from.
+        /// </summary>
+        [SerializeField]
+        public CubismDrawable TargetDrawable;
+
+        /// <summary>
+        /// Model root transform.
+        /// </summary>
+        private Transform _modelRootTransform;
+
+        private void Start()
+        {
+            _modelRootTransform = this.transform;
+        }
+
+        /// <summary>
+        /// Gets the position of the center.
+        /// </summary>
+        public Vector3 GetCenterPosition()
+        {
+            if (TargetDrawable == null)
+            {
+                return Vector3.zero;
+            }
+
+            var cubismRenderer = TargetDrawable.GetComponent<CubismRenderer>();
+
+            if (cubismRenderer == null || cubismRenderer.Mesh == null)
+            {
+                return _modelRootTransform.InverseTransformPoint(TargetDrawable.transform.position);
+            }
+
+            var centerInMeshLocal = cubismRenderer.Mesh.bounds.center;
+            var centerInWorld = TargetDrawable.transform.TransformPoint(centerInMeshLocal);
+            var centerInModelLocal = _modelRootTransform.InverseTransformPoint(centerInWorld);
+
+            return centerInModelLocal;
+        }
+    }
+}