using System.Collections;
using UnityEngine;
using UnityEngine.UI;

namespace UIWidgets
{
	public static class Animations
	{
		public static IEnumerator Rotate(RectTransform rectTransform, float time = 0.5f, float start_angle = 0f, float end_angle = 90f)
		{
			if (rectTransform != null)
			{
				Vector3 start_rotarion = rectTransform.rotation.eulerAngles;
				float end_time = Time.time + time;
				while (Time.time <= end_time)
				{
					float rotation_x = Mathf.Lerp(start_angle, end_angle, 1f - (end_time - Time.time) / time);
					rectTransform.rotation = Quaternion.Euler(rotation_x, start_rotarion.y, start_rotarion.z);
					yield return null;
				}
				rectTransform.rotation = Quaternion.Euler(start_rotarion);
			}
		}

		public static IEnumerator RotateZ(RectTransform rectTransform, float time = 0.5f, float start_angle = 0f, float end_angle = 90f)
		{
			if (rectTransform != null)
			{
				Vector3 start_rotarion = rectTransform.rotation.eulerAngles;
				float end_time = Time.time + time;
				while (Time.time <= end_time)
				{
					rectTransform.rotation = Quaternion.Euler(z: Mathf.Lerp(start_angle, end_angle, 1f - (end_time - Time.time) / time), x: start_rotarion.x, y: start_rotarion.y);
					yield return null;
				}
				rectTransform.rotation = Quaternion.Euler(start_rotarion);
			}
		}

		public static IEnumerator Collapse(RectTransform rectTransform, float time = 0.5f, bool isHorizontal = false)
		{
			if (!(rectTransform != null))
			{
				yield break;
			}
			Vector2 size = rectTransform.rect.size;
			LayoutElement layoutElement = rectTransform.GetComponent<LayoutElement>() ?? rectTransform.gameObject.AddComponent<LayoutElement>();
			if (size.x == 0f || size.y == 0f)
			{
				size = new Vector2(layoutElement.preferredWidth, layoutElement.preferredHeight);
			}
			float end_time = Time.time + time;
			while (Time.time <= end_time)
			{
				if (isHorizontal)
				{
					float num = Mathf.Lerp(size.x, 0f, 1f - (end_time - Time.time) / time);
					rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, num);
					layoutElement.preferredWidth = num;
				}
				else
				{
					float num2 = Mathf.Lerp(size.y, 0f, 1f - (end_time - Time.time) / time);
					rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, num2);
					layoutElement.preferredHeight = num2;
				}
				yield return null;
			}
			if (isHorizontal)
			{
				rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, size.x);
				layoutElement.preferredWidth = size.x;
			}
			else
			{
				rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, size.y);
				layoutElement.preferredHeight = size.y;
			}
		}

		public static IEnumerator Open(RectTransform rectTransform, float time = 0.5f, bool isHorizontal = false)
		{
			if (!(rectTransform != null))
			{
				yield break;
			}
			Vector2 size = rectTransform.rect.size;
			LayoutElement layoutElement = rectTransform.GetComponent<LayoutElement>() ?? rectTransform.gameObject.AddComponent<LayoutElement>();
			if (size.x == 0f || size.y == 0f)
			{
				size = new Vector2(layoutElement.preferredWidth, layoutElement.preferredHeight);
			}
			float end_time = Time.time + time;
			while (Time.time <= end_time)
			{
				if (isHorizontal)
				{
					float num = Mathf.Lerp(0f, size.x, 1f - (end_time - Time.time) / time);
					rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, num);
					layoutElement.preferredWidth = num;
				}
				else
				{
					float num2 = Mathf.Lerp(0f, size.y, 1f - (end_time - Time.time) / time);
					rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, num2);
					layoutElement.preferredHeight = num2;
				}
				yield return null;
			}
			if (isHorizontal)
			{
				rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, size.x);
				layoutElement.preferredWidth = size.x;
			}
			else
			{
				rectTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, size.y);
				layoutElement.preferredHeight = size.y;
			}
		}
	}
}