MonoBehaviour -> EditorWindow

GUI + logic redesign
Fix caching render logic
Limit uses of IMGUI
Add SkyCar model example

Author: willnode

Assets/Models.meta

@@ -1,20 +1,18 @@
 using System.Collections.Generic;
-using UnityEditor;
 using UnityEngine;
 using UnityEngine.Rendering;
 
+// Lightweight, Fast immediate mesh drawing. Works in runtime actually!
 public class IMGizmo : ScriptableObject
 {
     private void OnEnable()
     {
         hideFlags = HideFlags.DontSave;
-        SceneView.onSceneGUIDelegate += OnRenderScene;
     }
 
     private void OnDisable()
     {
         Clear();
-        SceneView.onSceneGUIDelegate -= OnRenderScene;
     }
 
     private void OnDestroy()
@@ -97,7 +95,7 @@ private float GetHandleSize(Vector3 position)
             Vector3 a = current.WorldToScreenPoint(position2 + transform.TransformDirection(new Vector3(0f, 0f, z)));
             Vector3 b = current.WorldToScreenPoint(position2 + transform.TransformDirection(new Vector3(1f, 0f, z)));
             float magnitude = (a - b).magnitude;
-            result = 80f / Mathf.Max(magnitude, 0.0001f) * EditorGUIUtility.pixelsPerPoint;
+            result = 80f / Mathf.Max(magnitude, 0.0001f) * UnityEditor.EditorGUIUtility.pixelsPerPoint;
         }
         else
         {
@@ -169,7 +167,7 @@ public static Color HSVToRGB(float H)
         return white;
     }
 
-    public void Init(Transform transform, bool depth, bool equalSize)
+    public void Init(Transform transform, Transform camera, bool depth, bool equalSize)
     {
         if (!m_Mesh)
         {
@@ -185,7 +183,7 @@ public void Init(Transform transform, bool depth, bool equalSize)
         m_Quads.Clear();
 
         m_Matrix = transform.localToWorldMatrix;
-        m_Camera = Camera.current.transform;
+        m_Camera = camera;
         m_EqualSize = equalSize;
         m_Layer = transform.gameObject.layer;
     }
@@ -234,7 +232,7 @@ public void Clear()
 
     }
 
-    private void OnRenderScene(SceneView view)
+    public void Render()
     {
         m_Material.SetPass(0);
         Graphics.DrawMeshNow(m_Mesh, m_Matrix, 0);

Assets/Plugins/MeshDebugger/Editor/IMGizmo.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using UnityEngine;
 
+// High management from IM Gizmos, with 65K mesh split!
 [Serializable]
 public class IMGizmos : IDisposable
 {
@@ -58,7 +59,7 @@ private void CreateNewIter()
         m_Gizmos.Add(giz);
     }
 
-    public void Init(Transform transform, bool depth, bool equalSize)
+    public void Init(Transform transform, Transform camera, bool depth, bool equalSize)
     {
         m_TotalVert = 0;
         m_CurIter = 0;
@@ -67,7 +68,7 @@ public void Init(Transform transform, bool depth, bool equalSize)
         for (int i = 0; i < m_Gizmos.Count; i++)
         {
             m_Gizmos[i].m_Active = i == 0;
-            m_Gizmos[i].Init(transform, depth, equalSize);
+            m_Gizmos[i].Init(transform, camera, depth, equalSize);
         }
     }
 
@@ -80,11 +81,27 @@ public void End()
         }
     }
 
+    public void Render()
+    {
+        for (int i = 0; i < m_Gizmos.Count; i++)
+        {
+            m_Gizmos[i].Render();
+        }
+    }
+
     public void Dispose()
     {
         foreach (var item in m_Gizmos)
         {
             UnityEngine.Object.DestroyImmediate(item);
         }
     }
+
+    public void Clear()
+    {
+        foreach (var item in m_Gizmos)
+        {
+            item.Clear();
+        }
+    }
 }