Can use RasterizingLayer and open IsMapInfoLayer=true,performance degradation about mapsui

[pauldendulk]

You have to give me a bit more information. When I turn MapInfo in the 'RasterizingTileLayer with Points' I don't see anything special.

using Mapsui.Extensions;
using Mapsui.Layers;
using Mapsui.Styles;
using Mapsui.Tiling;
using Mapsui.Tiling.Layers;
using Mapsui.Widgets;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

#pragma warning disable IDISP004 // Don't ignore created IDisposable

namespace Mapsui.Samples.Common.Maps.Performance;

public class RasterizingTileLayerWithPointsSample : ISample
{
    public string Name => "RasterizingTileLayer with Points";
    public string Category => "Performance";

    public Task<Map> CreateMapAsync()
    {
        var map = new Map();
        map.Layers.Add(OpenStreetMap.CreateTileLayer());
        map.Layers.Add(new RasterizingTileLayer(CreateRandomPointLayer()) {  IsMapInfoLayer = true});
        var extent = map.Layers[1].Extent!.Grow(map.Layers[1].Extent!.Width * 0.1);
        map.Home = n => n.ZoomToBox(extent);
        map.Widgets.Add(new MapInfoWidget(map));
        return Task.FromResult(map);
    }

    private static MemoryLayer CreateRandomPointLayer()
    {
        var rnd = new Random(3462); // Fix the random seed so the features don't move after a refresh
        var features = new List<IFeature>();
        for (var i = 0; i < 100; i++)
        {
            features.Add(new PointFeature(new MPoint(rnd.Next(0, 5000000), rnd.Next(0, 5000000))));
        }

        return new MemoryLayer
        {
            Name = "Points",
            Features = features,
            IsMapInfoLayer = true,
            Style = new SymbolStyle
            {
                SymbolType = SymbolType.Triangle,
                Fill = new Brush(Color.Red)
            }
        };
    }
}