ControlGUI/GUI/ScaleRule.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GUI
{
    public partial class ScaleRule : UserControl
    {
        float degree;

        public float Degree
        {
            get => degree;
            set
            {
                value = Math.Abs(value % 360);
                if (value > 174)
                {
                    float t = value - 174;
                    float v = -t * 1.542f;
                    ScalePane.Location = new Point((int)v, 0);
                }
                else
                {
                    float t = 174 - value;
                    float v = t * 1.542f - 554f;
                    ScalePane.Location = new Point((int)v, 0);
                }
                degree = value;
            }
        }

        public ScaleRule()
        {
            InitializeComponent();
            Degree = 0;
        }
    }
}