// On enable
    void OnEnable( )
    {
        Uni2DTextureAtlas rAtlas = target as Uni2DTextureAtlas;

        rAtlas.RevertSettings( );

        ms_oAtlasMaterials = rAtlas.GetAllMaterials( );
        ms_oAtlasTextures  = rAtlas.GetAllAtlasTextures( );
    }
    private void ApplySettings( )
    {
        if (target != null)
        {
            Uni2DTextureAtlas rAtlas = (Uni2DTextureAtlas)target;

            Uni2DTextureAtlasInspector.ApplySettings(rAtlas);

            ms_oAtlasMaterials = rAtlas.GetAllMaterials( );
            ms_oAtlasTextures  = rAtlas.GetAllAtlasTextures( );
        }
    }