optick/gui/InteractiveDataDisplay.WPF/Axes/RoundHelper.cs

// Copyright © Microsoft Corporation. All Rights Reserved.
// Licensed under the MIT License.

using System;
namespace InteractiveDataDisplay.WPF
{
    internal static class RoundHelper
    {
        //internal static int GetDifferenceLog(double min, double max)
        //{
        //    return (int)Math.Log(Math.Abs(max - min));
        //}

        internal static double Floor(double number, int rem)
        {
            if (rem <= 0)
            {
                rem = MathHelper.Clamp(-rem, 0, 15);
            }
            double pow = Math.Pow(10, rem - 1);
            double val = pow * Math.Floor((double)(number / Math.Pow(10, rem - 1)));
            return val;

        }

        internal static double Round(double number, int rem)
        {
            if (rem <= 0)
            {
                rem = MathHelper.Clamp(-rem, 0, 15);
                return Math.Round(number, rem);
            }
            else
            {
                double pow = Math.Pow(10, rem - 1);
                double val = pow * Math.Round(number / Math.Pow(10, rem - 1));
                return val;
            }
        }

        //internal static RoundingInfo CreateRoundedRange(double min, double max)
        //{
        //    double delta = max - min;

        //    if (delta == 0)
        //        return new RoundingInfo { Min = min, Max = max, Log = 0 };

        //    int log = (int)Math.Round(Math.Log10(Math.Abs(delta))) + 1;

        //    double newMin = Round(min, log);
        //    double newMax = Round(max, log);
        //    if (newMin == newMax)
        //    {
        //        log--;
        //        newMin = Round(min, log);
        //        newMax = Round(max, log);
        //    }

        //    return new RoundingInfo { Min = newMin, Max = newMax, Log = log };
        //}
    }

    //[DebuggerDisplay("{Min} - {Max}, Log = {Log}")]
    //internal sealed class RoundingInfo
    //{
    //    public double Min { get; set; }
    //    public double Max { get; set; }
    //    public int Log { get; set; }
    //}
}