Gigas002/GTiff2Tiles

using System.Globalization;
using BenchmarkDotNet.Attributes;
using GTiff2Tiles.Core.Enums;
using GTiff2Tiles.Core.GeoTiffs;
using GTiff2Tiles.Core.Tiles;

namespace GTiff2Tiles.Benchmarks;

[SimpleJob(10, 3, 5)]
public class Benchmark
{
    /*
     * We're creating GEODETIC png tiles from EPSG:4326 input file
     * resampling is cubic, zooms 0-15, process counter 8
     */

    #region Properties and consts

    private static string GetOutDirectory(string dirName)
    {
        string ts = DateTime.Now.ToString(Core.Constants.DateTimePatterns.LongWithMs, CultureInfo.InvariantCulture);

        return $"{dirName}_{ts}";
    }

    private const string GTiff2TilesOut = "gtiff2tiles";

    private const string Gdal2TilesOut = "gdal2tiles";

    private const string MaptilerOut = "maptiler";

    internal const string GdalName = "osgeo/gdal";

    internal const string MaptilerName = "maptiler/engine";

    private readonly int _tc = Environment.ProcessorCount;

    private const int MinZ = 0;

    private const int MaxZ = 15;

    internal const string Data = "data";

    internal const string In = "in";

    internal const string Itif = "i.tif";

    private static readonly string MountDir = AppContext.BaseDirectory;

    private readonly string _runArgs = $"--rm -v \"{MountDir}/data:/data\"";

    #endregion

    #region Benchmarks

    [Benchmark]
    public void RunGTiff2Tiles()
    {
        string path = $"{Data}/{In}/{Itif}";

        Directory.CreateDirectory($"{Data}/{In}");
        File.Copy($"../../../../{Data}/{In}/{Itif}", path, true);

        using Raster raster = new(path, CoordinateSystem.Epsg4326);
        raster.WriteTilesToDirectory($"{Data}/{GetOutDirectory(GTiff2TilesOut)}", MinZ, MaxZ,
                                     false, Tile.DefaultSize, TileExtension.Png, NetVips.Enums.Kernel.Cubic, 4, threadsCount: _tc);
    }

    [Benchmark]
    public void RunGdal2Tiles()
    {
        string path = $"{Data}/{In}/{Itif}";

        Directory.CreateDirectory($"{Data}/{In}");
        File.Copy($"../../../../{Data}/{In}/{Itif}", path, true);

        string gdalArgs = $"gdal2tiles.py -s EPSG:4326 -p geodetic -r cubic -z {MinZ}-{MaxZ} " +
                          $"--processes {_tc} {path} {Data}/{GetOutDirectory(Gdal2TilesOut)}";

        Docker.Run(_runArgs, GdalName, gdalArgs);
    }

    [Benchmark]
    public void RunMaptiler()
    {
        string path = $"{Data}/{In}/{Itif}";

        Directory.CreateDirectory($"{Data}/{In}");
        File.Copy($"../../../../{Data}/{In}/{Itif}", path, true);

        string maptilerArgs =
            $"maptiler -srs EPSG:4326 -preset geodetic -resampling cubic -zoom {MinZ} {MaxZ} " +
            $"-P {_tc} -f png32 -o {GetOutDirectory(MaptilerOut)} {In}/{Itif}";

        Docker.Run(_runArgs, MaptilerName, maptilerArgs);
    }

    #endregion
}