using System;

namespace BetterUI.Animations;

/// <summary>
/// Animates a component rotating around a central point in a pendulum-like motion.
/// </summary>
public class PendulumAnimation : AnimationBase
{
	/// <summary>
	/// The minimum angle of rotation (in degrees) that the component will reach.
	/// </summary>
	[Property]
	public float MinAngle { get; set; } = -45f;

	/// <summary>
	/// The maximum angle of rotation (in degrees) that the component will reach.
	/// </summary>
	[Property]
	public float MaxAngle { get; set; } = 45f;

	protected override void OnAnimate( float t )
	{
		var easedTime = ApplyEasing( NormalizedTime, Easing );
		var angle = MinAngle + (MaxAngle - MinAngle) * (0.5f + 0.5f * MathF.Sin( easedTime * MathF.PI * 2 ));

		WorldRotation = Rotation.FromAxis( Vector3.Up, angle );
	}
}