BH3/Assets/Scripts/Assembly-CSharp/CircleButton.cs

using UnityEngine;
using UnityEngine.UI;

public class CircleButton : Button, ICanvasRaycastFilter
{
	public float radius = 50f;

	public bool IsRaycastLocationValid(Vector2 sp, Camera eventCamera)
	{
		return Vector2.Distance(sp, base.transform.position) < radius;
	}
}