base.rb

    @corner_group.props.rotation = [ { "z-axis" => [ 0.0, [ 960, 540 ] ] } ]
    add_timer(0.1) do
      @logo_start.animate(duration: 800, opacity: 0).on_complete do
        @corner_lt.animate(duration: 700, left: 850, top: 427)
        @corner_rt.animate(duration: 700, right: 792, top: 427)
        @corner_lb.animate(duration: 700, left: 850, bottom: 370)
        @corner_rb.animate(duration: 700, right: 792, bottom: 370).on_complete do
          @corner_group.animate(duration: 800, rotation_angle_z: -180.0).on_complete do
            @corner_lt.animate(duration: 700, left: 25, top: 27)
            @corner_rt.animate(duration: 700, right: -33, top: 27)
            @corner_lb.animate(duration: 700, left: 25, bottom: -30)
            @corner_rb.animate(duration: 700, right: -33, bottom: -30).on_complete do
              app.statechart.send_action(:goto_authorization_form)
            end
          end
        end
      end
    end