How To: Add Buttons To The Transform Component In Editor Inspector

I really like the button the ngui added to all objects transform component. Next to the position was a button that would zero the position, there were similar buttons for the rotation and scale. I've added that functionality to a MenuItem, but I'd like to add it to each objects transform in the scene. How would I go about doing that?

 

I've always wanted to do this too. But I never really had the chance to explore it. I always thought if you made a script that extended the transform component theme wrote an editor script that might work.. But I'm not entirely sure

 

That sounds like that might work! Any idea on how to go about that?

 

There`s custom editor stuff
http://unity3d.com/learn/tutorials/modules/intermediate/editor/adding-buttons-to-inspector

I`ve only used it on my own scripts but what happens if you try it with
[CustomEditor(typeof(Transform))]

 

Just write a custom inspector for the Transform component - that's what NGUI is most likely doing as well (never used it so far). You'll first need to mimic the main transform component's look and feel and add your buttons as you want.

Here's a nice tutorial on writing custom inspectors:
http://unity3d.com/learn/tutorials/modules/intermediate/editor/building-custom-inspector

 

Thanks guys, I'll check out all that stuff and tell you what I come up with. Btw, I'm doing this in javascript

 

You can get a .NET reflection software and check in the UnityEditor.dll how the standard Transform editor is made.

.NET Reflector has a 30 days free trial.

 

ok I might look into that if I can't figure it out

 

So I know I need to use the Editor.target so that I know which object is selected, but how would I go about doing that? Heres my weak code as I'm trying to figure it out. This does not work at all Also, I just made the function public and override because I saw that on an example of an OnInspectorGUI script, but I don't really know what it does. I only ever make a normal function without any "modifiers" typed before them.

Code (js):

1.  
2. class TransformInspector extends Editor
3. {
4.     public override function  OnInspectorGUI ()
5.     {
6.         var t : Transform = Editor.target.transform;
7.     }
8. }

Here's the error
Assets/Editor/KeenansCoolTools/KeenansCoolTransformButtons.js(6,44): BCE0020: An instance of type 'UnityEditor.Editor' is required to access non static member 'target'.

 

Not sure how you do it in unityscript but you need to add the namespace

In c# we'd do it as using UnityEditor at the very top of the class

 

Don't do "Editor.target", just do "target.transform", it's a member variable.

 

Ok, so I've made a bunch of progress. I found this page,
https://code.google.com/p/pixelplac...ripts/TransformInspector.cs?spec=svn149&r=149
It helped me figure out a bunch of stuff. Everything works except for "t.localEulerAngles = FixifNaN(eulerAngles)." I'm not sure what the problem is. Here's my current code:

Code (js):

1.  
2. @CustomEditor (typeof (Transform))
3. class TransformInspector extends Editor
4. {
5.     //Make a function that replaces the Transform Component in the Inpector
6.     public override function  OnInspectorGUI ()
7.     {
8.         //target is the object you have selected in the editor. We are making a variable that is equal to the target's transform
9.         var t : Transform = target.transform;
10.         //Below we are creating new buttons on the Transform component
11.         if (GUILayout.Button("Reset Position"))
12.         {
13.             //Here we are telling Unity that the stuff that's being done by this button (changing the transform) needs to be undo-able
14.             Undo.RegisterUndo (t, "Reset Position " + t.name);
15.             t.transform.position = Vector3.zero;
16.         }
17.         if (GUILayout.Button("Reset Rotation"))
18.         {
19.             Undo.RegisterUndo (t, "Reset Rotation " + t.name);
20.             t.transform.rotation = Quaternion.identity;
21.         }
22.         if (GUILayout.Button("Reset Scale"))
23.         {
24.             Undo.RegisterUndo (t, "Reset Scale " + t.name);
25.             t.transform.localScale = Vector3 (1,1,1);
26.         }
27.         //Because we are overriding the transform components GUI in the Inspector, we have to recreate it below
28.         EditorGUIUtility.LookLikeControls();
29.         EditorGUI.indentLevel = 0;
30.         //Here we are recreating the part of the Transform component that gave you acces to the position.
31.         var position : Vector3 = EditorGUILayout.Vector3Field("Position", t.localPosition);
32.         //Here we are recreating the part of the Transform component that gave you acces to the rotation.
33.         var rotation : Vector3 = EditorGUILayout.Vector3Field("Rotation", t.localEulerAngles);
34.         //Here we are recreating the part of the Transform component that gave you acces to the rotation.
35.         var scale : Vector3 = EditorGUILayout.Vector3Field("Scale", t.localScale);
36.         EditorGUIUtility.LookLikeInspector();
37.         if (GUI.changed)
38.         {
39.             Undo.RegisterUndo (t, "Transform Change");
40.             t.localPosition = FixIfNaN(position);
41.             t.localEulerAngles = FixIfNaN(eulerAngles);
42.             t.localScale = FixIfNaN(scale);
43.         }
44.     }
45.     private function FixIfNaN(v : Vector3)
46.     {
47.         if (v.x == null)
48.         {
49.             v.x = 0;
50.         }
51.         if (v.y == null)
52.         {
53.             v.y = 0;
54.         }
55.         if (v.z == null)
56.         {
57.             v.z = 0;
58.         }
59.         return v;
60.     }
61. }

The error is:
Assets/Editor/KeenansCoolTools/KeenansCoolTransformButtons.js(40,43): BCE0005: Unknown identifier: 'eulerAngles'.

The error is on line 41 on this page

 

I just saw that where I made a private function called FixIfNaN was wrong. According to the reference page I was looking at, FixIfNaN is a variable..but also a function? I dont understand that at all! Ill paste the code from the site

Code (cs):

1.  
2. // Alternative version, with redundant code removed
3. using UnityEngine;
4. using UnityEditor;
5. using System.Collections;
6. [CustomEditor(typeof(Transform))]
7. public class TransformInspector:Editor
8. {
9.     public override voidOnInspectorGUI()
10.     {
11.         Transform t =(Transform)target;
12.              
13.                 if(GUILayout.Button("Reset Transforms")){
14.                         Undo.RegisterUndo(t,"Reset Transforms "+ t.name);
15.                         t.transform.position =Vector3.zero;
16.                         t.transform.rotation =Quaternion.identity;
17.                         t.transform.localScale =Vector3.one;
18.                 }
19.              
20.         // Replicate the standard transform inspector gui
21.         EditorGUIUtility.LookLikeControls();
22.         EditorGUI.indentLevel =0;
23.         Vector3 position =EditorGUILayout.Vector3Field("Position", t.localPosition);
24.         Vector3 eulerAngles =EditorGUILayout.Vector3Field("Rotation", t.localEulerAngles);
25.         Vector3 scale =EditorGUILayout.Vector3Field("Scale", t.localScale);
26.         EditorGUIUtility.LookLikeInspector();
27.         if(GUI.changed)
28.         {
29.             Undo.RegisterUndo(t,"Transform Change");
30.             t.localPosition =FixIfNaN(position);
31.             t.localEulerAngles =FixIfNaN(eulerAngles);
32.             t.localScale =FixIfNaN(scale);
33.         }
34.     }
35.     private Vector3 FixIfNaN(Vector3 v)
36.     {
37.         if(float.IsNaN(v.x))
38.         {
39.             v.x =0;
40.         }
41.         if(float.IsNaN(v.y))
42.         {
43.             v.y =0;
44.         }
45.         if(float.IsNaN(v.z))
46.         {
47.             v.z =0;
48.         }
49.         return v;
50.     }
51. }

 

I figured it out!! It was a stupid mistake, I needed to feed in rotation instead of eulerAngles! Now it works fine