/// <summary>
/// 根据指定距离和方向偏移
/// </summary>
/// <param name="offset"></param>
/// <param name="direction"></param>
/// <returns></returns>
public Line2D Offset(double offset, Vector2D direction)
{
Vector2D p1 = Start.Offset(direction.Normalize() * offset);
Vector2D p2 = End.Offset(direction.Normalize() * offset);
return(Create(p1, p2));
}
/// <summary>
/// 根据指定距离和方向偏移
/// </summary>
/// <param name="offset"></param>
/// <param name="direction"></param>
/// <returns></returns>
public void MoveTo(double offset, Vector2D direction)
{
this.MoveTo(direction.Normalize() * offset);
}