public override bool Equals(object obj)
        {
            if (!(obj is ToolpathPreviewVertex o))
            {
                return(false);
            }

            return
                (CustomColorData.Equals(o.CustomColorData) &&
                 Point.Equals(o.Point) &&
                 Color.Equals(o.Color) &&
                 FillType.Equals(o.FillType) &&
                 LayerIndex.Equals(o.LayerIndex) &&
                 Brightness.Equals(o.Brightness));
        }