CustomEventData.cs

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

public class CustomEventData : PointerEventData {

    public Vector3 delta3D;

    public Vector2 textureCoord;

    //Index of triangle hit by raycast in Mesh
    public int hitTriangleIndex;

    public ButtonType buttonType;

    public CustomEventData( EventSystem system ) : base( system ) {}
}