using UnityEngine;

[AddComponentMenu("Modifiers/Warps/Bubble")]
public class MegaBubbleWarp : MegaWarp
{
	public float radius;

	public float falloff = 20f;

	private Matrix4x4 mat = default(Matrix4x4);

	public override string WarpName()
	{
		return "Bubble";
	}

	public override string GetHelpURL()
	{
		return "?page_id=111";
	}

	public override Vector3 Map(int i, Vector3 p)
	{
		p = tm.MultiplyPoint3x4(p);
		Vector3 a = p;
		float magnitude = p.magnitude;
		float t = Mathf.Exp((0f - totaldecay) * Mathf.Abs(magnitude));
		float num = Vector3.Magnitude(p) / falloff;
		p += radius * Vector3.Normalize(p) / (num * num + 1f);
		p = Vector3.Lerp(a, p, t);
		return invtm.MultiplyPoint3x4(p);
	}

	private void Update()
	{
		Prepare(Decay);
	}

	public override bool Prepare(float decay)
	{
		totaldecay = Decay + decay;
		if (totaldecay < 0f)
		{
			totaldecay = 0f;
		}
		tm = base.transform.worldToLocalMatrix;
		invtm = tm.inverse;
		mat = Matrix4x4.identity;
		SetAxis(mat);
		return true;
	}
}