using System;

namespace BetterUI.Animations;

/// <summary>
/// Animates a component spinning around a given axis.
/// </summary>
public class SpinAnimation : AnimationBase
{
	private Vector3 _rotation;

	/// <summary>
	/// Gets or sets whether to use a sine wave to interpolate the rotation.
	/// </summary>
	[Property]
	public bool EnableSin { get; set; }

	/// <summary>
	/// Gets or sets the maximum angle of rotation.
	/// </summary>
	[Property]
	public float MaxAngle { get; set; } = 180f;

	protected override void OnAnimate( float t )
	{
		var easedTime = ApplyEasing( NormalizedTime, Easing );

		if ( EnableSin )
		{
			var angle = MathF.Sin( easedTime * MathF.PI * 2 ) * MaxAngle;
			WorldRotation = Rotation.FromPitch( angle );
		}
		else
		{
			_rotation += Axis * 1f;
			WorldRotation = new Angles( _rotation );
		}
	}
}