// // ===============================================================================
// // MeasureTool - Smart Scene Measurement & Analysis
// //
// // Creator: Scove
// // Last Updated: 2024-05-08
// // Version: 3.0
// //
// // Purpose:
// // A professional measurement tool that visualizes distances between objects
// // in the Scene View. Supports single distance, chain distance, and axis breakdown.
// //
// // Key Features:
// // 1. Two-Point & Chain Mode: Select 2 or more objects to measure.
// // 2. Axis Breakdown: Shows Delta X, Y, Z with Unity-standard colors.
// // 3. Scene Overlay: On-screen toggle and settings directly in Scene View.
// // 4. Readable UI: High-contrast labels with background for any lighting condition.
// //
// // How to Use:
// // 1. Place in an 'Editor' folder.
// // 2. Select 2 or more GameObjects in the Hierarchy.
// // 3. Use the "MEASURE" overlay in the Scene View to toggle axis details.
// // ===============================================================================
//
// #if UNITY_EDITOR
// using UnityEditor;
// using UnityEngine;
// using System.Collections.Generic;
//
// namespace Editor
// {
//     [InitializeOnLoad]
//     public class MeasureTool
//     {
//         // Settings (Persisted via EditorPrefs)
//         private static bool IsEnabled = true;
//         private static bool ShowAxisBreakdown = true;
//         private static bool ShowTotalDistance = true;
//
//         static MeasureTool()
//         {
//             IsEnabled = EditorPrefs.GetBool("MeasureTool_Enabled", true);
//             ShowAxisBreakdown = EditorPrefs.GetBool("MeasureTool_Axis", true);
//             
//             SceneView.duringSceneGui += OnSceneGUI;
//         }
//
//         private static void OnSceneGUI(SceneView view)
//         {
//             DrawOverlay(view);
//
//             if (!IsEnabled || Selection.transforms.Length < 2) return;
//
//             Transform[] selected = Selection.transforms;
//             
//             // Draw measurement for each pair in the selection
//             for (int i = 0; i < selected.Length - 1; i++)
//             {
//                 DrawDistance(selected[i].position, selected[i + 1].position);
//             }
//         }
//
//         private static void DrawDistance(Vector3 p1, Vector3 p2)
//         {
//             float distance = Vector3.Distance(p1, p2);
//             Vector3 midPoint = (p1 + p2) * 0.5f;
//
//             // 1. Draw the Main Dotted Line
//             Handles.color = Color.cyan;
//             Handles.DrawDottedLine(p1, p2, 4f);
//             
//             // Draw small spheres at start/end points for clarity
//             Handles.SphereHandleCap(0, p1, Quaternion.identity, 0.1f, EventType.Repaint);
//             Handles.SphereHandleCap(0, p2, Quaternion.identity, 0.1f, EventType.Repaint);
//
//             // 2. Draw Main Label (Total Distance)
//             if (ShowTotalDistance)
//             {
//                 GUIStyle labelStyle = GetLabelStyle(Color.white, new Color(0, 0, 0, 0.6f));
//                 string labelText = $"Dist: {distance:F2}m";
//                 Handles.Label(midPoint + (Vector3.up * 0.1f), labelText, labelStyle);
//             }
//
//             // 3. Draw Axis Breakdown (X, Y, Z Delta)
//             if (ShowAxisBreakdown)
//             {
//                 Vector3 delta = new Vector3(Mathf.Abs(p1.x - p2.x), Mathf.Abs(p1.y - p2.y), Mathf.Abs(p1.z - p2.z));
//                 
//                 // We only show axis delta if it's significant (> 0.01)
//                 string axisText = "";
//                 if (delta.x > 0.01f) axisText += $"<color=#FF5555>X: {delta.x:F2}</color>  ";
//                 if (delta.y > 0.01f) axisText += $"<color=#55FF55>Y: {delta.y:F2}</color>  ";
//                 if (delta.z > 0.01f) axisText += $"<color=#5555FF>Z: {delta.z:F2}</color>";
//
//                 if (!string.IsNullOrEmpty(axisText))
//                 {
//                     GUIStyle axisStyle = GetLabelStyle(Color.white, new Color(0.1f, 0.1f, 0.1f, 0.8f));
//                     axisStyle.richText = true;
//                     axisStyle.fontSize = 11;
//                     Handles.Label(midPoint - (Vector3.up * 0.3f), axisText, axisStyle);
//                 }
//             }
//         }
//
//         private static void DrawOverlay(SceneView view)
//         {
//             Handles.BeginGUI();
//             
//             // Positioning the overlay in the bottom right
//             float width = 140;
//             float height = 90;
//             Rect rect = new Rect(view.position.width - width - 10, view.position.height - height - 30, width, height);
//
//             GUILayout.BeginArea(rect, "MEASURE TOOL", GUI.skin.window);
//             
//             EditorGUI.BeginChangeCheck();
//             
//             IsEnabled = GUILayout.Toggle(IsEnabled, " Enable Tool");
//             ShowTotalDistance = GUILayout.Toggle(ShowTotalDistance, " Show Total");
//             ShowAxisBreakdown = GUILayout.Toggle(ShowAxisBreakdown, " Axis Breakdown");
//
//             if (EditorGUI.EndChangeCheck())
//             {
//                 EditorPrefs.SetBool("MeasureTool_Enabled", IsEnabled);
//                 EditorPrefs.SetBool("MeasureTool_Axis", ShowAxisBreakdown);
//                 SceneView.RepaintAll();
//             }
//
//             GUILayout.EndArea();
//             Handles.EndGUI();
//         }
//
//         private static GUIStyle GetLabelStyle(Color textColor, Color bgColor)
//         {
//             GUIStyle style = new GUIStyle();
//             style.normal.textColor = textColor;
//             style.fontSize = 13;
//             style.fontStyle = FontStyle.Bold;
//             style.alignment = TextAnchor.MiddleCenter;
//             style.padding = new RectOffset(4, 4, 2, 2);
//
//             // Create a background texture dynamically
//             Texture2D tex = new Texture2D(1, 1);
//             tex.SetPixel(0, 0, bgColor);
//             tex.Apply();
//             style.normal.background = tex;
//
//             return style;
//         }
//     }
// }
// #endif