using UnityEngine;

namespace TMPro.Examples
{
	public class TMP_FrameRateCounter : MonoBehaviour
	{
		public enum FpsCounterAnchorPositions
		{
			TopLeft = 0,
			BottomLeft = 1,
			TopRight = 2,
			BottomRight = 3
		}

		public float UpdateInterval = 5f;

		private float m_LastInterval;

		private int m_Frames;

		public FpsCounterAnchorPositions AnchorPosition = FpsCounterAnchorPositions.TopRight;

		private string htmlColorTag;

		private const string fpsLabel = "{0:2}</color> FPS \n{1:2} <#8080ff>MS";

		private TextMeshPro m_TextMeshPro;

		private Transform m_frameCounter_transform;

		private Camera m_camera;

		private FpsCounterAnchorPositions last_AnchorPosition;

		private void Awake()
		{
			if (base.enabled)
			{
				m_camera = Camera.main;
				Application.targetFrameRate = -1;
				GameObject gameObject = new GameObject("Frame Counter");
				m_TextMeshPro = gameObject.AddComponent<TextMeshPro>();
				m_TextMeshPro.font = Resources.Load("Fonts & Materials/LiberationSans SDF", typeof(TMP_FontAsset)) as TMP_FontAsset;
				m_TextMeshPro.fontSharedMaterial = Resources.Load("Fonts & Materials/LiberationSans SDF - Overlay", typeof(Material)) as Material;
				m_frameCounter_transform = gameObject.transform;
				m_frameCounter_transform.SetParent(m_camera.transform);
				m_frameCounter_transform.localRotation = Quaternion.identity;
				m_TextMeshPro.enableWordWrapping = false;
				m_TextMeshPro.fontSize = 24f;
				m_TextMeshPro.isOverlay = true;
				Set_FrameCounter_Position(AnchorPosition);
				last_AnchorPosition = AnchorPosition;
			}
		}

		private void Start()
		{
			m_LastInterval = Time.realtimeSinceStartup;
			m_Frames = 0;
		}

		private void Update()
		{
			if (AnchorPosition != last_AnchorPosition)
			{
				Set_FrameCounter_Position(AnchorPosition);
			}
			last_AnchorPosition = AnchorPosition;
			m_Frames++;
			float realtimeSinceStartup = Time.realtimeSinceStartup;
			if (realtimeSinceStartup > m_LastInterval + UpdateInterval)
			{
				float num = (float)m_Frames / (realtimeSinceStartup - m_LastInterval);
				float arg = 1000f / Mathf.Max(num, 1E-05f);
				if (num < 30f)
				{
					htmlColorTag = "<color=yellow>";
				}
				else if (num < 10f)
				{
					htmlColorTag = "<color=red>";
				}
				else
				{
					htmlColorTag = "<color=green>";
				}
				m_TextMeshPro.SetText(htmlColorTag + "{0:2}</color> FPS \n{1:2} <#8080ff>MS", num, arg);
				m_Frames = 0;
				m_LastInterval = realtimeSinceStartup;
			}
		}

		private void Set_FrameCounter_Position(FpsCounterAnchorPositions anchor_position)
		{
			m_TextMeshPro.margin = new Vector4(1f, 1f, 1f, 1f);
			switch (anchor_position)
			{
			case FpsCounterAnchorPositions.TopLeft:
				m_TextMeshPro.alignment = TextAlignmentOptions.TopLeft;
				m_TextMeshPro.rectTransform.pivot = new Vector2(0f, 1f);
				m_frameCounter_transform.position = m_camera.ViewportToWorldPoint(new Vector3(0f, 1f, 100f));
				break;
			case FpsCounterAnchorPositions.BottomLeft:
				m_TextMeshPro.alignment = TextAlignmentOptions.BottomLeft;
				m_TextMeshPro.rectTransform.pivot = new Vector2(0f, 0f);
				m_frameCounter_transform.position = m_camera.ViewportToWorldPoint(new Vector3(0f, 0f, 100f));
				break;
			case FpsCounterAnchorPositions.TopRight:
				m_TextMeshPro.alignment = TextAlignmentOptions.TopRight;
				m_TextMeshPro.rectTransform.pivot = new Vector2(1f, 1f);
				m_frameCounter_transform.position = m_camera.ViewportToWorldPoint(new Vector3(1f, 1f, 100f));
				break;
			case FpsCounterAnchorPositions.BottomRight:
				m_TextMeshPro.alignment = TextAlignmentOptions.BottomRight;
				m_TextMeshPro.rectTransform.pivot = new Vector2(1f, 0f);
				m_frameCounter_transform.position = m_camera.ViewportToWorldPoint(new Vector3(1f, 0f, 100f));
				break;
			}
		}
	}
}