Question

我已将所有模型添加为资源词典作为控件模板，我可以使用此代码加载它

 <Control Name="control" Width="507" Height="309" Template="{StaticResource SkeletonModel}"

现在我想在运行时编辑该模型，所以我试图获取在控制元素中加载的viewport3d在运行时编辑它，我不能使用触发器，所以我必须得到参考它然后从这里的代码操纵它是我试过的代码

  public partial class MainWindow : Window
    {
        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            Viewport3D v = this.GetTemplateChild("ModelView") as Viewport3D;

        }

        public MainWindow()
        {
            InitializeComponent();
        }
    }

v总是= null我还尝试将静态资源更改为动态资源，它没有工作我还尝试了其他几种方式，如

Viewport3D v = control.Template.LoadContent() as Viewport3D;
            ModelVisual3D model;

            model = FindName("SkeletonHumanModel") as ModelVisual3D;

这会加载视口和模型，但是当我编辑其中任何一个时它都没有被编辑，所以我想loadcontent只是加载一个副本或另一个实例而不是窗口中使用的当前实例这是资源字典

<ResourceDictionary 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" 
                    mc:Ignorable="d"

    >
    <!--x:Class="Dynamic.ModelOperations"
                     x:ClassModifier="public"-->
    <ControlTemplate x:Key="SkeletonModel" >

        <Viewport3D Width="500" Height="500"  x:Name="ModelView"  ClipToBounds="True" >

            <Viewport3D.Camera>
                <PerspectiveCamera FieldOfView="35" FarPlaneDistance="110.57139405398024" LookDirection="0,0,-38.5951803220261" NearPlaneDistance="0.1" Position="-16.3927650451661,9.1631622056011,38.1892213715065" UpDirection="0,1,0"/>
            </Viewport3D.Camera>
            <ModelVisual3D x:Name="World">
                <ModelVisual3D x:Name="AmbientLightContainer">
                    <ModelVisual3D.Content>
                        <AmbientLight x:Name="AmbientLight" Color="#FF7F7F7F"/>
                    </ModelVisual3D.Content>
                </ModelVisual3D>
                <ModelVisual3D x:Name="DirectionalLightContainer">
                    <ModelVisual3D.Content>
                        <DirectionalLight x:Name="DirectionalLight" Color="#FF3F3F3F" Direction="0,0,-1">
                            <DirectionalLight.Transform>
                                <TranslateTransform3D OffsetZ="3" OffsetX="0" OffsetY="0"/>
                            </DirectionalLight.Transform>
                        </DirectionalLight>
                    </ModelVisual3D.Content>
                </ModelVisual3D>
                <ModelVisual3D x:Name="SkeletonHumanModel"   >.....

提前致谢

Answer 1

要从ResourceDictionary获取资源，您应该使用FindResource（）方法。如果您的资源字典在App资源中合并，从MainWindow，您可以获得这样的资源，

private void OnLoaded(object sender, RoutedEventArgs e)
{
    var item = this.FindResource("SkeletonModel") as Viewport3D;
}

来自资源字典的wpf viewport3d GetTemplateChild返回null

1 个答案: