PunkHPX8/Framework/Common/TwinCat/Scaling.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MECF.Framework.Common.TwinCat
{
    public class Scaling
    {
        public Scaling(double x1, double x2, double y1, double y2) 
        { 
            _scaleA=(y1-y2)/(x1-x2);
            _scaleB = y1 - _scaleA * x1;
        }
        private double _scaleA;
        private double _scaleB;
        public double CalculateYByX(double x)
        {
            return Math.Round((_scaleA * x + _scaleB),2);
        }

        public int CaculateXByY(double y)
        {
            return (int)Math.Round(((y - _scaleB) / _scaleA));
        }
        public object CaculateXByY(double y,string dateType)
        {
            switch (dateType.ToLower())
            {
                case "int":
                    return (short)Math.Round(((y - _scaleB) / _scaleA));
                case "uint":
                    return (ushort)Math.Round(((y - _scaleB) / _scaleA));
                case "dint":
                    return (int)Math.Round(((y - _scaleB) / _scaleA));
                case "udint":
                    return (uint)Math.Round(((y - _scaleB) / _scaleA));
                default:
                    return (int)Math.Round(((y - _scaleB) / _scaleA));
            }
        }
    }
}