シーンカメラとメインカメラの同期

※この記事は2017年06月01日にqiitaに投稿した内容です。

環境

Unity5.6.1f1

概要

シーンのカメラとメインのカメラを同期します

プログラム

例：Assets/Editor/SyncSceneCamera.cs

using UnityEngine;
using UnityEditor;

public class SyncSceneCamera
{
    private const float _persSize = 0.01f; //適当な値
    private const float _orthoScaleBias = 2.0f; //適当な値
    private const string _menuPathFromMainCamera = "Tools/SyncSceneCamera/FromMainCamera";
    private const string _menuPathToMainCamera = "Tools/SyncSceneCamera/ToMainCamera";
    private static bool _isRuntimeInitialized = false;


    [InitializeOnLoadMethod]
    private static void InitializeOnLoad()
    {
        Debug.Log( "InitializeOnLoad" );
        Menu.SetChecked( _menuPathFromMainCamera, EditorPrefs.GetBool( _menuPathFromMainCamera ) );
        SceneView.onSceneGUIDelegate += OnSceneGUI;
        EditorApplication.update += OnUpdate;
    }

    [RuntimeInitializeOnLoadMethod( RuntimeInitializeLoadType.AfterSceneLoad )]
    private static void RuntimeInitializeOnLoad()
    {
        Debug.Log( "RuntimeInitializeOnLoad" );
        _isRuntimeInitialized = false;
    }

    //シーンカメラをメインカメラに同期
    [MenuItem( _menuPathFromMainCamera )]
    private static void SyncFromMainCamera()
    {
        ChangeSyncFromMainCamera();
        if( Menu.GetChecked( _menuPathToMainCamera ) == true )
            ChangeSyncToMainCamera();
    }

    private static void ChangeSyncFromMainCamera()
    {
        if( EditorApplication.isPlaying == true )
            _isRuntimeInitialized = true;

        var isSync = ( Menu.GetChecked( _menuPathFromMainCamera ) == true ) ? false : true;
        Menu.SetChecked( _menuPathFromMainCamera, isSync );
        EditorPrefs.SetBool( _menuPathFromMainCamera, isSync );

        if( isSync == false )
        {
            var sceneView = SceneView.lastActiveSceneView;
            sceneView.orthographic = false;
            sceneView.LookAtDirect( Camera.main.transform.position, Camera.main.transform.rotation, _persSize );
        }
    }

    //メインカメラをシーンカメラに同期
    [MenuItem( _menuPathToMainCamera )]
    private static void SyncToMainCamera()
    {
        ChangeSyncToMainCamera();
        if( Menu.GetChecked( _menuPathFromMainCamera ) == true )
            ChangeSyncFromMainCamera();
    }

    private static void ChangeSyncToMainCamera()
    {
        var isSync = ( Menu.GetChecked( _menuPathToMainCamera ) == true ) ? false : true;
        Menu.SetChecked( _menuPathToMainCamera, isSync );
        EditorPrefs.SetBool( _menuPathToMainCamera, isSync );
    }

    private static void OnUpdate()
    {
        var isSyncFromMain = Menu.GetChecked( _menuPathFromMainCamera );
        if( EditorApplication.isPlaying == true && isSyncFromMain == true )
        {
            if( _isRuntimeInitialized == false )
            {
                EditorApplication.ExecuteMenuItem( _menuPathFromMainCamera );
                Debug.Log( "ExecuteMenuItem" );
            }
        }
    }

    private static void OnSceneGUI( SceneView sceneView )
    {
        var isSyncFromMain = Menu.GetChecked( _menuPathFromMainCamera );
        var isSyncToMain = Menu.GetChecked( _menuPathToMainCamera );

        if( isSyncFromMain == true )
        {
            sceneView.in2DMode = false;
            sceneView.orthographic = Camera.main.orthographic;
            sceneView.camera.fieldOfView = Camera.main.fieldOfView;
            var size = ( sceneView.orthographic == true ) ? Camera.main.orthographicSize * _orthoScaleBias : _persSize;
            sceneView.LookAtDirect( Camera.main.transform.position, Camera.main.transform.rotation, size );
        }
        else if( isSyncToMain == true )
        {
            Camera.main.transform.position = sceneView.camera.transform.position;
            Camera.main.transform.rotation = sceneView.camera.transform.rotation;
        }
    }
}