RoApp/Assets/Editor/UI/ShapeEditor/ISelection.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public interface ISelection : IEnumerable<int>
{
    int Count { get; }
    int single { get; }
    int any { get; }
    void Clear();
    void BeginSelection();
    void EndSelection(bool select);
    void Select(int index, bool select);
    bool IsSelected(int index);
}