init

2026-09-10 10:59:37 +03:00
commit 5408d711b1
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+namespace Cthangover.Live2D.Cubism.Framework
+{
+    /// <summary>
+    /// Cubism model part opacity.
+    /// Each part has a string ID, a numeric index into the native part arrays,
+    /// and a current opacity value (0 = hidden, 1 = fully visible).
+    /// 
+    /// Parts are created during <see cref="CubismModelNode.SetupParts"/>
+    /// and exposed via <see cref="CubismModelNode.PartOpacities"/>.
+    /// External code can set <see cref="Value"/> and call
+    /// <see cref="ApplyToModel"/> to push the change to CubismCore.
+    /// </summary>
+    public class CubismPartOpacity
+    {
+        public CubismNativeModel Model { get; }
+
+        public CubismPartOpacity(CubismNativeModel model)
+        {
+            Model = model;
+        }
+        
+        /// <summary>Cubism part ID string (e.g. "PartArmL", "PartHairBack").</summary>
+        public string Id { get; set; }
+
+        /// <summary>Zero-based index into the native part arrays.</summary>
+        public int Index { get; set; }
+
+        /// <summary>
+        /// Current opacity value for this part. 0 = hidden, 1 = fully visible.
+        /// Written to native model when <see cref="ApplyToModel"/> is called.
+        /// </summary>
+        public float Value { get; set; }
+
+        /// <summary>
+        /// Writes <see cref="Value"/> directly to the native model's part opacities array.
+        /// </summary>
+        public unsafe void ApplyToModel()
+        {
+            var opacities = Model.GetPartOpacities();
+            opacities[Index] = Value;
+        }
+    }
+}