如何将MeshElement3D显示为线框? [英] How to display MeshElement3D as wireframe?

问题描述

我想显示任何 MeshElement3D (例如BoxVisual3d)作为线框.如何做到这一点?

I would like to display any MeshElement3D (for example BoxVisual3d) in helix-toolkit as wireframe. How can this be accomplished?

感谢Erno de Weerd的回答，我能够编写以下代码

Thanks to Erno de Weerd's answer I was able to write the following code

1. 扩展BoxVisual3D的类

1. Class that extends BoxVisual3D

public class GeometryBoxVisual3D : BoxVisual3D
{

  public MeshGeometry3D Geometry()
  {
    return Tessellate();
  }
}

将box的实例添加到视口:

Add the instance of box to the Viewport:

    GeometryBoxVisual3D box = new GeometryBoxVisual3D();
    box.Fill = new SolidColorBrush(Colors.Red);
    Viewport3D.Children.Add(box);
    MeshGeometry3D geometry3 = box.Geometry();
    LinesVisual3D lines = new LinesVisual3D();
    lines.Thickness = 3;
    lines.Points = geometry3.Positions;
    lines.Transform = new TranslateTransform3D(3,1,1);
    Viewport3D.Children.Add(lines);

这将显示以下内容:

如果隐藏原始框并将LinesVisual3D放置在框的顶部，则可以使wirefrime看起来像是原始对象，但仍然缺少侧面的边缘.

If I hide the original box and place LinesVisual3D on top of the box, I can get the wirefrime displayed as if it was original object, but it is still missing the edges on the side.

推荐答案

通过调用MeshElement3D.Tesselate()，您可以获得MeshGeometry3D(网格).

By calling MeshElement3D.Tesselate() you can get the MeshGeometry3D (mesh).

接下来创建一个LinesVisual3D对象.

将网格的点复制到LinesVisual3D的点.

Copy the Points of the mesh to the Points of the LinesVisual3D.

这将创建内部网格(请参见来源: Helix工具包中的LinesVisual3D.cs )

This will create the internal mesh (see the sources: LinesVisual3D.cs in helix toolkit)

最后，确保设置LinesVisual3D的厚度并将其添加到场景中.

Finally, make sure you set the thickness of the LinesVisual3D and add it to the scene.

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