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Assets/WasapiAudio/Editor/SpectrumDataPreviewDrawer.cs

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+using System.Linq;
+using Assets.WasapiAudio.Scripts.Unity;
+using UnityEditor;
+using UnityEngine;
+
+namespace Assets.WasapiAudio.Editor
+{
+    [CustomPropertyDrawer(typeof(SpectrumDataPreviewAttribute))]
+    public class SpectrumDataPreviewDrawer : PropertyDrawer
+    {
+        private const float DrawerHeight = 150.0f;
+        private const float AverageBarHeight = 5.0f;
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+        {
+            return DrawerHeight;
+        }
+
+        // Start is called before the first frame update
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            if (property.serializedObject == null || property.serializedObject.targetObject == null)
+            {
+                return;
+            }
+
+            var preview = fieldInfo.GetValue(property.serializedObject.targetObject) as SpectrumData;
+
+            if (preview == null || preview.Values == null)
+            {
+                return;
+            }
+
+            try
+            {
+                // Draw black background
+                EditorGUI.DrawRect(position, Color.black);
+
+                var x = 0.0f;
+                var barWidth = position.width / preview.Values.Length;
+                var average = preview.Values.Average() * DrawerHeight;
+
+                for (var i = 0; i < preview.Values.Length; i++)
+                {
+                    // Draw spectrum bar
+                    var barHeight = preview.Values[i] * DrawerHeight;
+
+                    var spectrumBarColor = Color.green;
+
+                    if (barHeight >= average)
+                    {
+                        spectrumBarColor = Color.yellow;
+                    }
+
+                    var spectrumBar = new Rect(position.x + x,
+                        position.y + DrawerHeight - barHeight,
+                        barWidth,
+                        barHeight);
+
+                    EditorGUI.DrawRect(spectrumBar, spectrumBarColor);
+
+                    // Draw average line
+                    var averageLine = new Rect(position.x,
+                        position.y + DrawerHeight - average,
+                        position.width,
+                        AverageBarHeight);
+
+                    EditorGUI.DrawRect(averageLine, Color.blue);
+
+                    x += barWidth;
+                }
+
+                EditorGUI.PrefixLabel(position, label);
+            }
+            catch
+            {
+
+            }
+        }
+    }
+}