/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * Licensed under the Oculus SDK License Agreement (the "License");
 * you may not use the Oculus SDK except in compliance with the License,
 * which is provided at the time of installation or download, or which
 * otherwise accompanies this software in either electronic or hard copy form.
 *
 * You may obtain a copy of the License at
 *
 * https://developer.oculus.com/licenses/oculussdk/
 *
 * Unless required by applicable law or agreed to in writing, the Oculus SDK
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using UnityEngine;
using UnityEngine.Assertions;

public class CanvasGroupAlphaToggle : MonoBehaviour
{
    public CanvasGroup canvasGroup;
    public float animationSpeed;
    private bool visible;
    public void ToggleVisible()
    {
        visible = !visible;
    }

    void Start()
    {
        Assert.IsNotNull(canvasGroup);
    }

    void Update()
    {
        canvasGroup.alpha = Mathf.Lerp(canvasGroup.alpha, visible ? 1.0f : 0.0f, animationSpeed * Time.deltaTime);
    }
}