source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Axes/Numeric/NumericConversion.cs @ 13398

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

namespace Microsoft.Research.DynamicDataDisplay.Charts.Axes.Numeric
{
  internal sealed class NumericConversion
  {
    private readonly double min;
    private readonly double length;
    private readonly double minValue;
    private readonly double valueLength;

    public NumericConversion(double min, double minValue, double max, double maxValue)
    {
      this.min = min;
      this.length = max - min;

      this.minValue = minValue;
      this.valueLength = maxValue - minValue;
    }

    public double FromDouble(double value)
    {
      double ratio = (value - min) / length;

      return minValue + ratio * valueLength;
    }

    public double ToDouble(double value)
    {
      double ratio = (value - minValue) / valueLength;

      return min + length * ratio;
    }
  }
}