using UnityEngine;

[AddComponentMenu("Modifiers/Bulge")]
public class MegaBulge : MegaModifier
{
	public Vector3 Amount = Vector3.zero;

	public Vector3 FallOff = Vector3.zero;

	public bool LinkFallOff = true;

	private Vector3 per = Vector3.zero;

	private float xsize;

	private float ysize;

	private float zsize;

	private float size;

	private float cx;

	private float cy;

	private float cz;

	private Vector3 dcy = Vector3.zero;

	public override string ModName()
	{
		return "Bulge";
	}

	public override string GetHelpURL()
	{
		return "?page_id=163";
	}

	public override Vector3 Map(int i, Vector3 p)
	{
		p = tm.MultiplyPoint3x4(p);
		float num = p.x - cx;
		float num2 = p.y - cy;
		float num3 = p.z - cz;
		if (num == 0f && num2 == 0f && num3 == 0f)
		{
			num = (num2 = (num3 = 1f));
		}
		float num4 = Mathf.Sqrt(num * num + num2 * num2 + num3 * num3);
		float num5 = size / num4;
		dcy.x = Mathf.Exp((0f - FallOff.x) * Mathf.Abs(num));
		if (!LinkFallOff)
		{
			dcy.y = Mathf.Exp((0f - FallOff.y) * Mathf.Abs(num2));
			dcy.z = Mathf.Exp((0f - FallOff.z) * Mathf.Abs(num3));
		}
		else
		{
			dcy.y = (dcy.z = dcy.x);
		}
		p.x = cx + num + Mathf.Sign(num) * ((Mathf.Abs(num * num5) - Mathf.Abs(num)) * per.x) * dcy.x;
		p.y = cy + num2 + Mathf.Sign(num2) * ((Mathf.Abs(num2 * num5) - Mathf.Abs(num2)) * per.y) * dcy.y;
		p.z = cz + num3 + Mathf.Sign(num3) * ((Mathf.Abs(num3 * num5) - Mathf.Abs(num3)) * per.z) * dcy.z;
		return invtm.MultiplyPoint3x4(p);
	}

	public override void ModStart(MegaModifiers mc)
	{
		xsize = bbox.max.x - bbox.min.x;
		ysize = bbox.max.y - bbox.min.y;
		zsize = bbox.max.z - bbox.min.z;
		size = ((!(xsize > ysize)) ? ysize : xsize);
		size = ((!(zsize > size)) ? size : zsize);
		size /= 2f;
		cx = bbox.center.x;
		cy = bbox.center.y;
		cz = bbox.center.z;
		per = Amount / 100f;
	}

	public override bool ModLateUpdate(MegaModContext mc)
	{
		return Prepare(mc);
	}

	public override bool Prepare(MegaModContext mc)
	{
		xsize = bbox.max.x - bbox.min.x;
		ysize = bbox.max.y - bbox.min.y;
		zsize = bbox.max.z - bbox.min.z;
		size = ((!(xsize > ysize)) ? ysize : xsize);
		size = ((!(zsize > size)) ? size : zsize);
		size /= 2f;
		cx = bbox.center.x;
		cy = bbox.center.y;
		cz = bbox.center.z;
		per = Amount / 100f;
		return true;
	}
}