using System;
using UnityEngine;

public class UICurveLabel : MonoBehaviour
{
	[SerializeField]
	private int _magnificationHeight;

	[SerializeField]
	private AnimationCurve _animationCurve;

	private const float HALF_CHARACTER = 0.5f;

	private float _timeIntervalCharacter;

	public void Init(string text)
	{
		if (text.Length <= 1)
		{
			_timeIntervalCharacter = 0f;
		}
		else
		{
			_timeIntervalCharacter = 1f / (float)(text.Length - 1);
		}
	}

	public float GetTargetCharacterHeight(int inIndex)
	{
		return _animationCurve.Evaluate((float)inIndex * _timeIntervalCharacter) * (float)(-_magnificationHeight);
	}

	private float GetTargetCharacterAnimationCurveValue(float inTime)
	{
		return _animationCurve.Evaluate(inTime * _timeIntervalCharacter);
	}

	public Vector2[] SetTargetCharacterRotation(int inIndex, ref float v0x, ref float v0y, ref float v1x, ref float v1y)
	{
		Vector2 vector = default(Vector2);
		Vector2 vector2 = default(Vector2);
		if (inIndex == 0)
		{
			vector.x = 0f;
			vector.y = GetTargetCharacterAnimationCurveValue(0f);
			vector2.x = ((float)inIndex + 0.5f) * _timeIntervalCharacter;
			vector2.y = GetTargetCharacterAnimationCurveValue((float)inIndex + 0.5f);
		}
		else
		{
			vector.x = ((float)inIndex - 0.5f) * _timeIntervalCharacter;
			vector.y = GetTargetCharacterAnimationCurveValue((float)inIndex - 0.5f);
			vector2.x = (float)inIndex * _timeIntervalCharacter;
			vector2.y = GetTargetCharacterAnimationCurveValue(inIndex);
		}
		Vector2 vector3 = vector2 - vector;
		float num = Mathf.Atan2(vector3.y, vector3.x);
		float num2 = Mathf.Sin(num);
		float num3 = Mathf.Cos(num);
		Vector2 vector4 = new Vector2((v1x + v0x) / 2f, (v1y + v0y) / 2f);
		Vector2[] array = new Vector2[4];
		array[0].x = v0x;
		array[0].y = v0y;
		array[1].x = v0x;
		array[1].y = v1y;
		array[2].x = v1x;
		array[2].y = v1y;
		array[3].x = v1x;
		array[3].y = v0y;
		for (int i = 0; i < 4; i++)
		{
			float num4 = array[i].x - vector4.x;
			float num5 = array[i].y - vector4.y;
			array[i].x = num3 * num4 - num2 * num5;
			array[i].y = num2 * num4 + num3 * num5;
			array[i].x += vector4.x;
			array[i].y += vector4.y;
		}
		Vector2[] array2 = new Vector2[4];
		if (num < (float)Math.PI / 2f)
		{
			return array;
		}
		if (num < (float)Math.PI)
		{
			array2[0] = array[3];
			array2[1] = array[0];
			array2[2] = array[1];
			array2[3] = array[2];
		}
		else if (num < 4.712389f)
		{
			array2[0] = array[2];
			array2[1] = array[3];
			array2[2] = array[0];
			array2[3] = array[1];
		}
		else
		{
			array2[0] = array[1];
			array2[1] = array[2];
			array2[2] = array[3];
			array2[3] = array[0];
		}
		for (int j = 0; j < 4; j++)
		{
			array[j] = array2[j];
		}
		return array;
	}
}