void OnGUI()
 {
     using (var horizonal = new GUILayout.HorizontalScope()) {
         if (GUILayout.Button("+"))
         {
             controller.IntParameter += 1;
         }
         if (GUILayout.Button("-"))
         {
             controller.IntParameter -= 1;
         }
     }
     using (var horizonal = new GUILayout.HorizontalScope()) {
         if (GUILayout.Button("+"))
         {
             controller.FloatParameter += 0.1f;
         }
         if (GUILayout.Button("-"))
         {
             controller.FloatParameter -= 0.1f;
         }
     }
     controller.BoolParameter = GUILayout.Toggle(controller.BoolParameter, controller.BoolParameter.ToString());
     if (GUILayout.Button("trigger"))
     {
         controller.Trigger();
     }
     using (var horizonal = new GUILayout.HorizontalScope()) {
         if (GUILayout.Button("Move State1"))
         {
             controller.animator.Play(SampleController.State1_State1);
         }
         if (GUILayout.Button("Move State2"))
         {
             controller.animator.Play(SampleController.State1_State2);
         }
     }
 }