using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEditor;

[ExecuteInEditMode]
[RequireComponent(typeof(Graphic))]
public abstract class BaseUIEffect : UIBehaviour, IMeshModifier, IMaterialModifier
{
	[NonSerialized]
	private Graphic m_Graphic;

	protected Graphic graphic
	{
		get
		{
			if (m_Graphic == null)
				m_Graphic = GetComponent<Graphic>();

			return m_Graphic;
		}
	}

	protected override void OnEnable()
	{
		base.OnEnable();
		if (graphic != null)
			graphic.SetVerticesDirty();
	}

	protected override void OnDisable()
	{
		if (graphic != null)
			graphic.SetVerticesDirty();
		base.OnDisable();
	}

	protected override void OnDidApplyAnimationProperties()
	{
		if (graphic != null)
			graphic.SetVerticesDirty();
		base.OnDidApplyAnimationProperties();
	}

#if UNITY_EDITOR
	protected override void OnValidate()
	{
		base.OnValidate();
		if (graphic != null)
			graphic.SetVerticesDirty();
	}

#endif

	public void ModifyMesh(Mesh mesh)
	{
		using (var vh = new VertexHelper(mesh))
		{
			ModifyMesh(vh);
			vh.FillMesh(mesh);
		}
	}

	public virtual void ModifyMesh(VertexHelper vh)
	{
	}

	public virtual Material GetModifiedMaterial(Material baseMaterial)
	{
		return baseMaterial;
	}

}