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

namespace IStation.Model
{
    /// <summary>
    /// 系数的坐标系
    /// </summary>
    public class RatioAxisCalculator : IAxisCalculator
    {
        /// <summary>
        /// 
        /// </summary>
        public RatioAxisCalculator() { }

        /// <summary>
        /// 
        /// </summary>
        public RatioAxisCalculator(double ratio)
        {
            this.Ratio = ratio;
        }

        /// <summary>
        /// 系数
        /// </summary>
        public double Ratio
        {
            get { return _ratio; }
            private set { _ratio = value; }
        }
        private double _ratio = 1;

        /// <summary>
        /// 计算
        /// </summary>
        public double Calculate(double v)
        {
            if (_ratio == 1)
                return v;
            var trn_v = v * _ratio;
            if (trn_v > 8)
            {
                var int_trn_v = Math.Round(trn_v, 0);
                if (Math.Abs(int_trn_v - trn_v) < 0.02)
                    trn_v = int_trn_v;
            }

            return trn_v;
        }

        /// <summary>
        /// 反算
        /// </summary>
        public double RevCalculate(double v)
        {
            if (_ratio == 1)
                return v;

            var trn_v = v / _ratio;

            if (trn_v > 8)
            {
                var int_trn_v = Math.Round(trn_v, 0);
                if (Math.Abs(int_trn_v - trn_v) < 0.02)
                    trn_v = int_trn_v;
            }

            return trn_v;
        }

    }

}