MeshCreator.RemoveVertex C# (CSharp) Method

    private void RemoveVertex(Vector2 position)
    {
        var vert = GetVertexNearPosition(position);
        if(vert != null) RemoveVertex(vert.index);
    }

    void MouseCheck()                   // 마우스 좌클릭 체크.
    {
        Event currentEvent = Event.current;

        switch (currentEvent.rawType)
        {
        case EventType.MouseDown:
            if (currentEvent.button == 0 && mouseLeftDown == false)
            {
                mouseLeftDown         = true;
                GUIUtility.hotControl = 0;
                SaveUndo();
                currentEvent.Use();

                if (isEditing)
                {
                    if (minMidVertPos != Vector3.zero && AbleEditting(minMidVertPos))
                    {
                        int frontVertex = 0, backVertex = 0;
                        myMeshCreator.FindLinkedVertex(minMidVertPos, out frontVertex, out backVertex);
                        myMeshCreator.InsertTriangle(frontVertex, backVertex, MouseInfo.Position - myMeshCreator.transform.position);
                        minMidVertPos = Vector3.zero;
                        editingVert   = myMeshCreator.GetMesh().vertices.Length - 1;
                    }
                    else if (AbleEditting(minVert))
                    {
                        editingVert = minVert;
                    }
                    else
                    {
                        editingVert = -1;
                    }
                }
                else if (isRemoving && AbleEditting(minVert))
                {
                    if (minMidVertPos == Vector3.zero && myMeshCreator.GetRemoveAble()[minVert] == true)
                    {
                        myMeshCreator.RemoveVertex(minVert);
                        myMeshCreator.CheckRemoveAbleAll();
                    }
                }
            }
            break;

        case EventType.MouseUp:
            if (currentEvent.button == 0)
            {
                mouseLeftDown = false;
                // GUIUtility.hotControl = GUIUtility.GetControlID(FocusType.Passive);
                GUIUtility.hotControl = 0;      // 왠진 모르겟지만 0도 되서 그냥 0으로.
                currentEvent.Use();
            }
            break;
        }
    }