WinUI で 1億ポイントをプロット

// ProEssentials — Plot 100 Million Points (WinUI 3, ~15 lines)
// NuGet: Install-Package ProEssentials.Chart.Net10.WinUI
// Control: PesgoWinUI (named Pesgo1 in XAML). .NET 10, x64 and native ARM64.

// 1. Allocate your data — this is the ONLY copy that will ever exist
float[] yData = new float[100_000_000];
for (int i = 0; i < yData.Length; i++)
    yData[i] = (float)Math.Sin(i * 0.0001) + (float)(rand.NextDouble() * 0.1);

// 2. Configure the chart
Pesgo1.PeData.Subsets = 1;
Pesgo1.PeData.Points  = 100_000_000;
Pesgo1.PePlot.Method  = SGraphPlottingMethod.Line;
Pesgo1.PeConfigure.RenderEngine = RenderEngine.Direct3D;
Pesgo1.PeData.ComputeShader  = true;   // build chart geometry on the GPU
Pesgo1.PeData.Filter2D3D     = true;   // lossless GPU min/max pre-filter
Pesgo1.PeData.StagingBufferY = true;   // required with ComputeShader

// 3. Zero-copy: point the chart at your existing array — no duplication
Pesgo1.PeData.Y.UseDataAtLocation(yData, yData.Length);

// 4. Rebuild vertices on the GPU and render
Pesgo1.PeFunction.Force3dxVerticeRebuild = true;
Pesgo1.PeFunction.ReinitializeResetImage();
Pesgo1.Invalidate();

// Syncfusion — Plot 100 Million Points (WinUI, SfCartesianChart)
// NuGet: Install-Package Syncfusion.Chart.WinUI

// 1. Syncfusion binds to objects — one per point
public class DataPoint { public double X { get; set; } public double Y { get; set; } }

// 2. Build the collection — 100M objects is ~2.4 GB+ with object headers
var data = new List<DataPoint>(100_000_000);
for (int i = 0; i < 100_000_000; i++)
    data.Add(new DataPoint { X = i, Y = Math.Sin(i * 0.0001) + rand.NextDouble() * 0.1 });
// This allocation alone risks OutOfMemoryException; the practical ceiling is well below 100M.

// 3. Fast bitmap series — rasterizes the line to a WriteableBitmap
var series = new FastLineBitmapSeries {
    ItemsSource  = data,
    XBindingPath = "X",
    YBindingPath = "Y"
};
chart.Series.Add(series);

// Telerik — Plot 100 Million Points (WinUI, RadCartesianChart)
// NuGet: Install-Package Telerik.WinUI.Controls   (license key required)

// 1. Telerik binds to objects — one per point
public class DataPoint { public double X { get; set; } public double Y { get; set; } }

// 2. Build the collection (~2.4 GB+ at 100M objects)
var data = new ObservableCollection<DataPoint>();
for (int i = 0; i < 100_000_000; i++)
    data.Add(new DataPoint { X = i, Y = Math.Sin(i * 0.0001) + rand.NextDouble() * 0.1 });

// 3. Line series — drawn through the Composition ContainerVisualsFactory
var series = new LineSeries {
    ItemsSource     = data,
    CategoryBinding = new PropertyNameDataPointBinding { PropertyName = "X" },
    ValueBinding    = new PropertyNameDataPointBinding { PropertyName = "Y" }
};
// For large data, Telerik expects you to downsample before binding.
radChart.Series.Add(series);

// DevExpress — Plot 100 Million Points (WinUI, ChartControl)
// NuGet: DevExpress WinUI packages (private feed, credentials required)

// 1. DevExpress binds to objects — one per point
public class DataPoint { public double Argument { get; set; } public double Value { get; set; } }

// 2. Build the collection (~2.4 GB+ at 100M objects)
var data = new List<DataPoint>(100_000_000);
for (int i = 0; i < 100_000_000; i++)
    data.Add(new DataPoint { Argument = i, Value = Math.Sin(i * 0.0001) + rand.NextDouble() * 0.1 });

// 3. Line series on the ChartControl — bind DataSource + data members
var series = new LineSeries();
series.DataSource         = data;
series.ArgumentDataMember = "Argument";
series.ValueDataMember    = "Value";
chartControl.Series.Add(series);
// DevExpress recommends data sampling to keep large sets responsive.

// ComponentOne (MESCIUS) — Plot 100 Million Points (WinUI, FlexChart)
// NuGet: Install-Package C1.WinUI.Chart

// 1. FlexChart binds to objects — one per point
public class DataPoint { public double X { get; set; } public double Y { get; set; } }

// 2. Build the collection (~2.4 GB+ at 100M objects)
var data = new List<DataPoint>(100_000_000);
for (int i = 0; i < 100_000_000; i++)
    data.Add(new DataPoint { X = i, Y = Math.Sin(i * 0.0001) + rand.NextDouble() * 0.1 });

// 3. Bind the chart, then switch on the Direct2D render mode for large data
flexChart.ItemsSource = data;
flexChart.BindingX    = "X";
flexChart.Series.Add(new Series { Binding = "Y" });
flexChart.RenderMode  = RenderMode.Direct2D;   // required to draw millions of points