ml-agents/UnitySDK/Assets/ML-Agents/Examples/SharedAssets/Scripts/RayPerception.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public abstract class RayPerception : MonoBehaviour {

	protected List<float> perceptionBuffer = new List<float>();

	public virtual List<float> Perceive(float rayDistance,
		float[] rayAngles, string[] detectableObjects,
		float startOffset, float endOffset)
	{
		return perceptionBuffer;
	}

	/// <summary>
	/// Converts degrees to radians.
	/// </summary>
	public static float DegreeToRadian(float degree)
	{
		return degree * Mathf.PI / 180f;
	}
	
}