WPF:如何将 3D 对象从 xaml 文件添加到我的 viewport3D? [英] WPF: How to add 3D object from xaml file to my viewport3D?

问题描述

我有 viewport3D 并且我想将在 xaml 文件中定义的多个 3d 对象添加到此 Viewport3D，但默认情况下，在 .xaml 文件中定义的 3d 对象已经带有 viewport3D，我无法将其添加到我的 Viewport3D如何在 Viewport3D 中使用 .xaml 文件中的那些 3D 对象?

I have viewport3D and I want to add multiple 3d objects defined in xaml files to this Viewport3D, but by default 3d object deffined in .xaml file comes already with viewport3D and I can not add it to my Viewport3D How I can use those 3D objects from .xaml files in my Viewport3D?

我尝试使用 XamlReader 读取 xaml 将其转换为 viewport3D，然后将 vieport3D 子元素添加到我的视口中，但我收到错误消息指定的 Visual 已经是另一个 Visual 的子项或 CompositionTarget 的根."

I tryed to read xaml with XamlReader cast it to viewport3D and then take vieport3D child elements and add to my viewport, but I get error "Specified Visual is already a child of another Visual or the root of a CompositionTarget."

推荐答案

试试下面的代码.我还没有真正在 WPF 中使用 3D，但我猜它的行为与常见的 WPF 面板相同:

Try the code below. I haven't really worked with 3D in WPF but I'm guessing it behaves the same as the common WPF Panels:

Viewport3D vp = XamlReader.Load(fileName) as Viewport3D;

//Move the child visuals to a temporary collection.
List<Visual3D> items = new List<Visual3D>();
foreach (Visual3D visual in vp.Children)
{
    items.Add(visual);
}

//"Detach" the visuals from the original parent.
vp.Children.Clear();

//Now, put it in the destination viewport.
foreach (var item in items)
{
    myViewport.Children.Add(item);
}

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