using System;

namespace BetterUI.Animations;

/// <summary>
/// Animates a component in a spiral motion, varying its radius over time.
/// </summary>
public class SpiralAnimation : AnimationBase
{
	/// <summary>
	/// Gets or sets the initial radius of the spiral.
	/// </summary>
	[Property]
	public float Radius { get; set; } = 5f;

	/// <summary>
	/// Gets or sets the axis along which the spiral animation occurs.
	/// </summary>
	[Property, Category( "Animation" )]
	public override Vector3 Axis { get; set; } = new(1f, 1f, 0f);

	/// <summary>
	/// Animates the component in a spiral pattern based on the current time.
	/// </summary>
	/// <param name="t">The normalized time of the animation.</param>
	protected override void OnAnimate( float t )
	{
		var easedTime = ApplyEasing( NormalizedTime, Easing );

		var angle = easedTime * MathF.PI * 2;
		var currentRadius = Radius + 1f * easedTime;

		var x = Axis.x != 0 ? StartPosition.x + currentRadius * MathF.Cos( angle ) : StartPosition.x;
		var y = Axis.y != 0 ? StartPosition.y + currentRadius * MathF.Sin( angle ) : StartPosition.y;
		var z = Axis.z != 0 ? StartPosition.z + currentRadius * MathF.Sin( angle ) : StartPosition.z;

		WorldPosition = new Vector3( x, y, z );
	}
}