/// <summary>
/// 直線をベジェに変換、コントロールポイントは直線上に1/3の長さで設定
/// </summary>
/// <returns></returns>
internal bool ConvertToCurve()
{
var p0 = befor.GetPoint();
var p1 = GetPoint();
var l = CmUtils.Length(p0, p1) / 3;
var rad = MathF.Atan2(p1.Y - p0.Y, p1.X - p0.X);
points.Insert(0, CmUtils.Coordinate(p0, l, rad));
points.Insert(1, CmUtils.Coordinate(p1, l, rad + MathF.PI));
Command = 'C';
return(true);
}
