我正在使用 C# WPF,并且尝试从 3D 模型渲染 2D 视图,我可以将其用作 ui 项目的预览图像。
为了实现这一目标,我尝试正确使用此类:
RenderTargetBitmap 类( https://msdn.microsoft.com/en-us/library/system.windows.media.imaging.rendertargetbitmap(v=vs.110).aspx )
这就是我尝试使用它的方式:
更新后就无所谓了
public void SetModelImage()
{
RenderTargetBitmap bmp = new RenderTargetBitmap(200, 200, 96, 96, PixelFormats.Pbgra32);
PngBitmapEncoder png = new PngBitmapEncoder();
Viewport3D myViewport3d = new Viewport3D();
ModelVisual3D myModelVisual3D = new ModelVisual3D();
Model3DGroup myModel3DGroup = new Model3DGroup();
GeometryModel3D myGeometryModel = new GeometryModel3D();
this.previewModel = new PngBitmapEncoder();
PerspectiveCamera myPCamera = new PerspectiveCamera();
myModel3DGroup.Children.Add(this.content);// ajoute le modele
myModelVisual3D.Content = myModel3DGroup;
myModelVisual3D.Content = this.content;
myViewport3d.Children.Add(myModelVisual3D);
bmp.Render(myViewport3d);
this.previewModel.Frames.Add(BitmapFrame.Create(bmp));
string filepath = …Run Code Online (Sandbox Code Playgroud) 我目前正在使用C#WPF项目,我在几行中显示图像(蓝头)
问题是我无法选择任何这些项目,我使用MVVM模式,因此后面的代码必须尽可能轻,我必须在xaml文件中执行操作.
所以我希望能够通过点击它们来选择图像,我试图使用像"IsMouseOver"这样的事件,但我只能改变整个包装而不是单个项目.
这是我使用的代码:
<Grid Grid.Row="1" Height="Auto">
<Grid.Background>
<LinearGradientBrush>
<LinearGradientBrush.GradientStops>
<GradientStop Color="#252525" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Grid.Background>
<ItemsControl Background="Transparent" Foreground="AntiqueWhite" BorderBrush="Transparent"
HorizontalContentAlignment="Stretch" ItemsSource="{Binding Source={x:Static Context:Session.CurrentSession}, Path=CurrentProject.Models}">
<ItemsControl.ContextMenu>
<ContextMenu>
<MenuItem Header="Delete" Command="{Binding DeleteModel3DCommand}" CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu}, Path=PlacementTarget.SelectedItem}"/>
</ContextMenu>
</ItemsControl.ContextMenu>
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<i:InvokeCommandAction Command="{Binding SelectModel3DCommand}" CommandParameter="{Binding Path=SelectedItem, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListBox}}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Image Source="/McKineap;component/Resources/Images/logo-mckineap.png" Height="100"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</Grid>
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我会就你在我的报道中定义选择事件的正确方法提出任何建议,谢谢你的时间!