using UnityEngine;

public class MegaFFD : MegaModifier
{
	public float KnotSize = 0.1f;

	public bool inVol;

	public Vector3[] pt = new Vector3[64];

	[HideInInspector]
	public float EPSILON = 0.001f;

	[HideInInspector]
	public Vector3 lsize = Vector3.one;

	[HideInInspector]
	public Vector3 bsize = default(Vector3);

	[HideInInspector]
	public Vector3 bcenter = default(Vector3);

	public virtual int GridSize()
	{
		return 1;
	}

	public virtual int GridIndex(int i, int j, int k)
	{
		return 0;
	}

	public override string GetHelpURL()
	{
		return "?page_id=199";
	}

	public override void PostCopy(MegaModifier src)
	{
		MegaFFD megaFFD = (MegaFFD)src;
		pt = new Vector3[64];
		for (int i = 0; i < 64; i++)
		{
			pt[i] = megaFFD.pt[i];
		}
	}

	public Vector3 LatticeSize()
	{
		Vector3 result = bsize;
		if (result.x == 0f)
		{
			result.x = 0.001f;
		}
		if (result.y == 0f)
		{
			result.y = 0.001f;
		}
		if (result.z == 0f)
		{
			result.z = 0.001f;
		}
		return result;
	}

	private void Init()
	{
		lsize = LatticeSize();
		int num = GridSize();
		float num2 = (float)num - 1f;
		for (int i = 0; i < num; i++)
		{
			for (int j = 0; j < num; j++)
			{
				for (int k = 0; k < num; k++)
				{
					int num3 = GridIndex(i, j, k);
					pt[num3].x = (float)i / num2;
					pt[num3].y = (float)j / num2;
					pt[num3].z = (float)k / num2;
				}
			}
		}
	}

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

	public override bool Prepare(MegaModContext mc)
	{
		Vector3 s = LatticeSize();
		for (int i = 0; i < 3; i++)
		{
			if (s[i] == 0f)
			{
				s[i] = 1f;
			}
			else
			{
				s[i] = 1f / s[i];
			}
		}
		Vector3 trans = MegaMatrix.GetTrans(ref tm);
		MegaMatrix.SetTrans(ref tm, trans - bbox.min - Offset);
		MegaMatrix.Scale(ref tm, s, false);
		invtm = tm.inverse;
		return true;
	}

	public Vector3 GetPoint(int i)
	{
		Vector3 a = pt[i];
		a.x -= 0.5f;
		a.y -= 0.5f;
		a.z -= 0.5f;
		return Vector3.Scale(a, lsize) + bcenter;
	}

	public Vector3 GetPoint(int i, int j, int k)
	{
		Vector3 a = pt[GridIndex(i, j, k)];
		a.x -= 0.5f;
		a.y -= 0.5f;
		a.z -= 0.5f;
		return Vector3.Scale(a, lsize) + bcenter;
	}

	public void SetPoint(int i, int j, int k, Vector3 pos)
	{
		Vector3 lpos = base.transform.worldToLocalMatrix.MultiplyPoint(pos);
		SetPointLocal(i, j, k, lpos);
	}

	public void SetPointLocal(int i, int j, int k, Vector3 lpos)
	{
		Vector3 vector = lsize;
		Vector3 b = lsize;
		b.x = 1f / vector.x;
		b.y = 1f / vector.y;
		b.z = 1f / vector.z;
		lpos -= bcenter;
		Vector3 vector2 = Vector3.Scale(lpos, b);
		vector2.x += 0.5f;
		vector2.y += 0.5f;
		vector2.z += 0.5f;
		pt[GridIndex(i, j, k)] = vector2;
	}

	public void SetPoint(int index, Vector3 pos)
	{
		Vector3 lpos = base.transform.worldToLocalMatrix.MultiplyPoint(pos);
		SetPointLocal(index, lpos);
	}

	public void SetPointLocal(int index, Vector3 lpos)
	{
		Vector3 vector = lsize;
		Vector3 b = lsize;
		b.x = 1f / vector.x;
		b.y = 1f / vector.y;
		b.z = 1f / vector.z;
		lpos -= bcenter;
		Vector3 vector2 = Vector3.Scale(lpos, b);
		vector2.x += 0.5f;
		vector2.y += 0.5f;
		vector2.z += 0.5f;
		pt[index] = vector2;
	}

	public void MovePoint(int x, int y, int z, Vector3 localmove)
	{
		Vector3 point = GetPoint(x, y, z);
		point += localmove;
		SetPointLocal(x, y, z, point);
	}

	private void Reset()
	{
		MegaModifyObject component = base.gameObject.GetComponent<MegaModifyObject>();
		if (component != null)
		{
			component.ModReset(this);
		}
		Renderer component2 = GetComponent<Renderer>();
		if (component2 != null)
		{
			Mesh sharedMesh = MegaUtils.GetSharedMesh(base.gameObject);
			if (sharedMesh != null)
			{
				Bounds bounds = sharedMesh.bounds;
				Offset = -bounds.center;
				bbox.min = bounds.center - bounds.extents;
				bbox.max = bounds.center + bounds.extents;
			}
		}
		if (component.selection != null)
		{
			Bounds bounds2 = default(Bounds);
			for (int i = 0; i < component.verts.Length; i++)
			{
				if (component.selection[i] > 0.001f)
				{
					bounds2.Encapsulate(component.verts[i]);
				}
			}
			Offset = -bounds2.center;
			bbox.min = bounds2.center - bounds2.extents;
			bbox.max = bounds2.center + bounds2.extents;
		}
		bsize = bbox.Size();
		bcenter = bbox.center;
		Init();
	}

	[ContextMenu("Fit FFD to Selection")]
	public void FitFFD()
	{
		Reset();
	}

	[ContextMenu("Fit FFD to Mesh")]
	public void FitFFDToMesh()
	{
		Renderer component = GetComponent<Renderer>();
		if (component != null)
		{
			Mesh sharedMesh = MegaUtils.GetSharedMesh(base.gameObject);
			if (sharedMesh != null)
			{
				Bounds bounds = sharedMesh.bounds;
				Offset = -bounds.center;
				bbox.min = bounds.center - bounds.extents;
				bbox.max = bounds.center + bounds.extents;
			}
		}
		bsize = bbox.Size();
		bcenter = bbox.center;
		Init();
	}

	public override bool InitMod(MegaModifiers mc)
	{
		bsize = mc.bbox.size;
		bcenter = mc.bbox.center;
		Init();
		return true;
	}

	private static MegaFFD Create(GameObject go, int type)
	{
		switch (type)
		{
		case 0:
			return go.AddComponent<MegaFFD2x2x2>();
		case 1:
			return go.AddComponent<MegaFFD3x3x3>();
		case 2:
			return go.AddComponent<MegaFFD4x4x4>();
		default:
			return null;
		}
	}

	public override void DrawGizmo(MegaModContext context)
	{
	}
}