├── README.md
└── SceneCameraRelativeTool.cs


/README.md:
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1 | # UnitySceneRelativeTransformTool
2 | A custom editor tool for unity that allows you to move transforms relative to the scene camera
3 | 
4 | License: creative commons cc0
5 | 
6 | here's a video of it in action:
7 | https://www.dropbox.com/s/0jvh9rav1fzyoow/2qPTjmtDaE.mp4?dl=0
8 | 


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/SceneCameraRelativeTool.cs:
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 1 | using System;
 2 | using UnityEngine;
 3 | using UnityEditor;
 4 | using UnityEditor.EditorTools;
 5 | 
 6 | // Tagging a class with the EditorTool attribute and no target type registers a global tool. Global tools are valid for any selection, and are accessible through the top left toolbar in the editor.
 7 | [EditorTool("Scene Camera Relative")]
 8 | class SceneCameraRelativeTool : EditorTool
 9 | {
10 |     // Serialize this value to set a default value in the Inspector.
11 |     [SerializeField]
12 |     Texture2D m_ToolIcon;
13 | 
14 |     GUIContent m_IconContent;
15 | 
16 |     void OnEnable()
17 |     {
18 |         m_IconContent = new GUIContent()
19 |         {
20 |             image = m_ToolIcon,
21 |             text = "Scene Camera Relative",
22 |             tooltip = "Scene Camera Relative"
23 |         };
24 |     }
25 | 
26 |     public override GUIContent toolbarIcon
27 |     {
28 |         get { return m_IconContent; }
29 |     }
30 | 
31 |     // This is called for each window that your tool is active in. Put the functionality of your tool here.
32 |     public override void OnToolGUI(EditorWindow window)
33 |     {
34 |         EditorGUI.BeginChangeCheck();
35 | 
36 |         Vector3 position = Tools.handlePosition;
37 | 
38 |         Matrix4x4 cm = SceneView.lastActiveSceneView.camera.cameraToWorldMatrix;
39 |         Vector3 up = cm * Vector3.up;
40 |         Vector3 right = cm * Vector3.right;
41 | 
42 |         using (new Handles.DrawingScope(Color.red))
43 |         {
44 |             position = Handles.Slider(position, right);
45 |         }
46 |         using (new Handles.DrawingScope(Color.green))
47 |         {
48 |             position = Handles.Slider(position, up);
49 |         }
50 |         using (new Handles.DrawingScope(new Color(0,0,1,.3f)))
51 |         {
52 |             float size = HandleUtility.GetHandleSize(position) * .15f;
53 |             Vector3 offset = (up * size) + (right * size);
54 |             position = Handles.FreeMoveHandle(position + offset, Quaternion.identity, size, Vector3.zero, Handles.DotHandleCap);
55 |             position -= offset;
56 |         }
57 | 
58 |         if (EditorGUI.EndChangeCheck())
59 |         {
60 |             Vector3 delta = position - Tools.handlePosition;
61 | 
62 |             Undo.RecordObjects(Selection.transforms, "Move Transform");
63 | 
64 |             foreach (var transform in Selection.transforms)
65 |                 transform.position += delta;
66 |         }
67 |     }
68 | }


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