/*
 * 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;

namespace Oculus.Interaction
{
    public class ConeUtils
    {
        public static bool RayWithinCone(Ray ray, Vector3 position, float apertureDegrees)
        {
            float minDotProductThreshold = Mathf.Cos(apertureDegrees * Mathf.Deg2Rad);

            var vectorToInteractable = position - ray.origin;
            var distanceToInteractable = vectorToInteractable.magnitude;

            if (Mathf.Abs(distanceToInteractable) < 0.001f) return true;

            vectorToInteractable /= distanceToInteractable;
            var dotProduct = Vector3.Dot(vectorToInteractable, ray.direction);

            return dotProduct >= minDotProductThreshold;
        }
    }
}