wpf使用Direct2D绘制曲线

···
Install-Package SharpDX
Install-Package SharpDX.Direct2D1
Install-Package SharpDX.DXGI
Install-Package SharpDX.Direct3D11

···

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Image Name="DxImage"/>
    </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Interop;
using SharpDX;
using SharpDX.Direct2D1;
using SharpDX.Direct3D11;
using SharpDX.DXGI;
using SharpDX.Mathematics.Interop;
using Device = SharpDX.Direct3D11.Device;
using Factory = SharpDX.Direct2D1.Factory;
using AlphaModeD2D = SharpDX.Direct2D1.AlphaMode;
using PixelFormat = SharpDX.Direct2D1.PixelFormat;
using SolidColorBrush = SharpDX.Direct2D1.SolidColorBrush;
using SharpDX.DirectWrite;
using System.Windows.Media;
using TextAlignment = SharpDX.DirectWrite.TextAlignment;
using FactoryType = SharpDX.Direct2D1.FactoryType;
using TextAntialiasMode = SharpDX.Direct2D1.TextAntialiasMode;
using System.Numerics;
using DashStyle = SharpDX.Direct2D1.DashStyle;