C# 如何将带有填充的椭圆转换为C语言中的ImageDrawing#

我已经创建了一个椭圆。然后如何将该椭圆转换为ImageDrawing

基本上我要做的是拍摄3张图片，（上画中间画和下画）

将它们堆叠在一起以创建单个图形。但我也告诉用户，当其他图层（即底部和顶部）保持静止时，可以旋转中间的图形

我必须在代码中完成这项工作，而不是XAML，因为实体是数据库驱动的

我使用DrawingGroup来堆叠这3幅图像。

问题是我无法将中间的图形旋转到23

我希望我能解释清楚。有人建议我尝试使用椭圆，但我需要将它们转换为ImageDrawing

---

任何帮助都很好。

为什么不能使用XAML？这是我制作的一个量具，它非常具有可伸缩性，可以绑定到您想要的任何数据

XAML：

代码隐藏：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace clock
{
    /// <summary>
    /// Interaction logic for ctlClock.xaml
    /// </summary>
    public partial class ctlGauge : UserControl
    {
        public static DependencyProperty MaxValueProperty = DependencyProperty.Register("MaxValue", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MaxValue_Changed)));

        public double MaxValue
        {
            get { return (double)GetValue(MaxValueProperty); }
            set { SetValue(MaxValueProperty, value); }
        }


        private static void MaxValue_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMaxValue();
        }

        private void SetMaxValue()
        {
            MaxPointAngle = GetValueAngle(MaxValue);
        }

        public static DependencyProperty CurrentValueProperty = DependencyProperty.Register("CurrentValue", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(CurrentValue_Changed)));

        public double CurrentValue
        {
            get { return (double)GetValue(CurrentValueProperty); }
            set { SetValue(CurrentValueProperty, value); }
        }


        private static void CurrentValue_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetCurrentValue();
        }

        private void SetCurrentValue()
        {
            MainPointerAngle = GetValueAngle(CurrentValue);
        }

        public static DependencyProperty MainPointerAngleProperty = DependencyProperty.Register("MainPointerAngle", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MainPointerAngle_Changed)));

        public static DependencyProperty MaxPointAngleProperty = DependencyProperty.Register("MaxPointAngle", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MaxPointAngle_Changed)));

        public double MaxPointAngle
        {
            get { return (double)GetValue(MaxPointAngleProperty); }
            set { SetValue(MaxPointAngleProperty, value); }
        }


        private static void MaxPointAngle_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMaxPointAngle();
        }

        private void SetMaxPointAngle()
        {
            //Put Instance MaxPointAngle Property Changed code here
        }

        public double MainPointerAngle
        {
            get { return (double)GetValue(MainPointerAngleProperty); }
            set { SetValue(MainPointerAngleProperty, value); }
        }


        private static void MainPointerAngle_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMainPointerAngle();
        }

        private void SetMainPointerAngle()
        {
            //Put Instance MainPointerAngle Property Changed code here
        }

        public ctlGauge()
        {
            InitializeComponent();
            SetCurrentValue();
            SetMaxValue();
        }

        private double GetValueAngle(double value)
        {
            double dAngle = 125 + (value * 29);
            if (dAngle > 360)
            {
                dAngle -= 360;
                if (dAngle > 56)
                    dAngle = 56;
            }
            else if (dAngle < 124)
                dAngle = 124;

            return dAngle;
        }
    }
}

使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用系统文本；
使用System.Threading.Tasks；
使用System.Windows；
使用System.Windows.Controls；
使用System.Windows.Data；
使用System.Windows.Documents；
使用System.Windows.Input；
使用System.Windows.Media；
使用System.Windows.Media.Imaging；
使用System.Windows.Navigation；
使用System.Windows.Shapes；
名称空间时钟
{
/// 
///ctlClock.xaml的交互逻辑
/// 
公共部分类：UserControl
{
public static dependencProperty MaxValueProperty=dependencProperty.Register（“MaxValue”、typeof（double）、typeof（ctlguge）、new FrameworkPropertyMetadata（new PropertyChangedCallback（MaxValue_Changed））；
公共双最大值
{
获取{return（double）GetValue（MaxValueProperty）；}
set{SetValue（MaxValueProperty，value）；}
}
私有静态void MaxValue_已更改（DependencyObject o、DependencyPropertyChangedEventArgs args）
{
ctlGauge thisClass=（ctlGauge）o；
thisClass.SetMaxValue（）；
}
私有void SetMaxValue（）
{
MaxPointAngle=GetValueAngle（MaxValue）；
}
public static dependencProperty CurrentValueProperty=dependencProperty.Register（“CurrentValue”、typeof（double）、typeof（ctlguge）、new FrameworkPropertyMetadata（new PropertyChangedCallback（CurrentValue_Changed））；
公共双电流值
{
获取{return（double）GetValue（CurrentValueProperty
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace clock
{
    /// <summary>
    /// Interaction logic for ctlClock.xaml
    /// </summary>
    public partial class ctlGauge : UserControl
    {
        public static DependencyProperty MaxValueProperty = DependencyProperty.Register("MaxValue", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MaxValue_Changed)));

        public double MaxValue
        {
            get { return (double)GetValue(MaxValueProperty); }
            set { SetValue(MaxValueProperty, value); }
        }


        private static void MaxValue_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMaxValue();
        }

        private void SetMaxValue()
        {
            MaxPointAngle = GetValueAngle(MaxValue);
        }

        public static DependencyProperty CurrentValueProperty = DependencyProperty.Register("CurrentValue", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(CurrentValue_Changed)));

        public double CurrentValue
        {
            get { return (double)GetValue(CurrentValueProperty); }
            set { SetValue(CurrentValueProperty, value); }
        }


        private static void CurrentValue_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetCurrentValue();
        }

        private void SetCurrentValue()
        {
            MainPointerAngle = GetValueAngle(CurrentValue);
        }

        public static DependencyProperty MainPointerAngleProperty = DependencyProperty.Register("MainPointerAngle", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MainPointerAngle_Changed)));

        public static DependencyProperty MaxPointAngleProperty = DependencyProperty.Register("MaxPointAngle", typeof(double), typeof(ctlGauge), new FrameworkPropertyMetadata(new PropertyChangedCallback(MaxPointAngle_Changed)));

        public double MaxPointAngle
        {
            get { return (double)GetValue(MaxPointAngleProperty); }
            set { SetValue(MaxPointAngleProperty, value); }
        }


        private static void MaxPointAngle_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMaxPointAngle();
        }

        private void SetMaxPointAngle()
        {
            //Put Instance MaxPointAngle Property Changed code here
        }

        public double MainPointerAngle
        {
            get { return (double)GetValue(MainPointerAngleProperty); }
            set { SetValue(MainPointerAngleProperty, value); }
        }


        private static void MainPointerAngle_Changed(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ctlGauge thisClass = (ctlGauge)o;
            thisClass.SetMainPointerAngle();
        }

        private void SetMainPointerAngle()
        {
            //Put Instance MainPointerAngle Property Changed code here
        }

        public ctlGauge()
        {
            InitializeComponent();
            SetCurrentValue();
            SetMaxValue();
        }

        private double GetValueAngle(double value)
        {
            double dAngle = 125 + (value * 29);
            if (dAngle > 360)
            {
                dAngle -= 360;
                if (dAngle > 56)
                    dAngle = 56;
            }
            else if (dAngle < 124)
                dAngle = 124;

            return dAngle;
        }
    }
}

<Window x:Class="clock.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:clock"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="Auto" />
        </Grid.ColumnDefinitions>
        <local:ctlGauge CurrentValue="{Binding ElementName=sldPointerAngle, Path=Value}" MaxValue="{Binding ElementName=sldMaxAngle, Path=Value}" Grid.ColumnSpan="3" />
        <TextBlock Text="Pointer Value:" HorizontalAlignment="Right" Grid.Row="1" />
        <Slider Name="sldPointerAngle" Grid.Row="1" Grid.Column="1" Minimum="-1" Maximum="11" Value="0" />
        <TextBlock Grid.Column="2" Grid.Row="1" Width="100" Text="{Binding ElementName=sldPointerAngle, Path=Value}" />

        <TextBlock Text="Max Value:" HorizontalAlignment="Right" Grid.Row="2" />
        <Slider Name="sldMaxAngle" Grid.Row="2" Minimum="0" Grid.Column="1" Maximum="10" Value="9" />
        <TextBlock Grid.Column="2" Grid.Row="2" Width="100" Text="{Binding ElementName=sldMaxAngle, Path=Value}" />
    </Grid>
</Window>

<UserControl x:Class="clock.ctlGauge"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="clr-namespace:clock"
             mc:Ignorable="d" 
             d:DesignHeight="256" d:DesignWidth="256" DataContext="{Binding RelativeSource={RelativeSource Self}}" >
    <Viewbox>
        <Grid Height="256" Width="256">
            <Image Name="imgBack" Source="images/Yellowback.png" />
            <Image Name="imgBigPointer" Source="images/Pointer1.png" RenderTransformOrigin="0.5,0.5">
                <Image.RenderTransform>
                    <TransformGroup>
                        <ScaleTransform/>
                        <SkewTransform/>
                        <RotateTransform Angle="{Binding MainPointerAngle}"/>
                        <TranslateTransform/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <Image Name="imgSmallPointer" Source="images/Pointer2.png" RenderTransformOrigin="0.5,0.5">
                <Image.RenderTransform>
                    <TransformGroup>
                        <ScaleTransform/>
                        <SkewTransform/>
                        <RotateTransform Angle="{Binding MaxPointAngle}"/>
                        <TranslateTransform/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <Image Name="imgBorder" Source="images/CircleBorder.png" />
            <Image Name="imgCenterCover" Source="images/CenterCover.png" />
        </Grid>
    </Viewbox>

</UserControl>