BlenderCameraControlsForUnity.cs

using UnityEngine;
using UnityEditor;

[InitializeOnLoad]
public class BlenderCameraControlsForUnity
{
    /*
  	 *  This an extension of Will Traxler's CamControl script:
	 *  http://wiki.unity3d.com/index.php/Blender_Camera_Controls_Window
     *  
     *  which is the extension of Marc Kusters BlenderCameraControls script: 
	 *  http://wiki.unity3d.com/index.php/Blender_Camera_Controls
     */

    static BlenderCameraControlsForUnity()
    {
        SceneView.duringSceneGui += view =>
         {
             UnityEditor.SceneView sceneView;
             Vector3 eulerAngles;
             Event current;
             Quaternion rotHelper;

             current = Event.current;

             if (!current.isKey || current.type != EventType.KeyDown)
                 return;

             sceneView = UnityEditor.SceneView.lastActiveSceneView;

             eulerAngles = sceneView.camera.transform.rotation.eulerAngles;
             rotHelper = sceneView.camera.transform.rotation;

             switch (current.keyCode)
             {
                 case KeyCode.Keypad1:
                     if (current.control == false)
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(0f, 360f, 0f)));
                     else
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(0f, 180f, 0f)));
                     break;
                 case KeyCode.Keypad2:
                     sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, rotHelper * Quaternion.Euler(new Vector3(-15f, 0f, 0f)));
                     break;
                 case KeyCode.Keypad3:
                     if (current.control == false)
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(0f, 270f, 0f)));
                     else
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(0f, 90f, 0f)));
                     break;
                 case KeyCode.Keypad4:
                     sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(eulerAngles.x, eulerAngles.y + 15f, eulerAngles.z)));
                     break;
                 case KeyCode.Keypad5:
                     sceneView.orthographic = !sceneView.orthographic;
                     break;
                 case KeyCode.Keypad6:
                     sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(eulerAngles.x, eulerAngles.y - 15f, eulerAngles.z)));
                     break;
                 case KeyCode.Keypad7:
                     if (current.control == false)
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(90f, 0f, 0f)));
                     else
                         sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, Quaternion.Euler(new Vector3(270f, 0f, 0f)));
                     break;
                 case KeyCode.Keypad8:
                     sceneView.LookAtDirect(SceneView.lastActiveSceneView.pivot, rotHelper * Quaternion.Euler(new Vector3(15f, 0f, 0f)));
                     break;
                 case KeyCode.KeypadPeriod:
                     if (Selection.transforms.Length == 1)
                         sceneView.LookAtDirect(Selection.activeTransform.position, sceneView.camera.transform.rotation);
                     else if (Selection.transforms.Length > 1)
                     {
                         Vector3 tempVec = new Vector3();
                         for (int i = 0; i < Selection.transforms.Length; i++)
                         {
                             tempVec += Selection.transforms[i].position;
                         }
                         sceneView.LookAtDirect((tempVec / Selection.transforms.Length), sceneView.camera.transform.rotation);
                     }
                     break;
                 case KeyCode.KeypadMinus:
                     SceneView.RepaintAll();
                     sceneView.size *= 1.1f;
                     break;
                 case KeyCode.KeypadPlus:
                     SceneView.RepaintAll();
                     sceneView.size /= 1.1f;
                     break;
             }

        };
    }
}