I'm trying to display a videostream in a Viewport3d. When I add the MediaElement via xaml, the video plays without a problem; even when I add the video as ModelVisual3D in the code-behind, the video works. When I abstract the video into a class, however, the video stops appearing. This happens with both web and local video files. I tried compiling with both x86 and 64 bit. Any way to fix this behaviour? Why is this happening?
I have the following viewport:
<Viewport3D>
<!--
Camera -->
<Viewport3D.Camera>
<PerspectiveCamera Position="0,0,100" LookDirection="0,0,-1" UpDirection="0,1,0" />
</Viewport3D.Camera>
<!-- Light -->
<ModelVisual3D>
<ModelVisual3D.Content>
<AmbientLight Color="White" />
</ModelVisual3D.Content>
</ModelVisual3D>
<!-- this doesn't work -->
<mediaElementTest:VideoControl />
<!-- but this does? -->
<!--<ModelVisual3D>
<ModelVisual3D.Content>
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
Positions="-100,-100,0 100,-100,0 100,100,0 -100,100,0"
TextureCoordinates="0,1 1,1 1,0 0,0"
TriangleIndices="0 1 2 0 2 3"
/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<VisualBrush>
<VisualBrush.Visual>
<MediaElement Source="http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4" />
</VisualBrush.Visual>
</VisualBrush>
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
</GeometryModel3D>
</ModelVisual3D.Content>
</ModelVisual3D>-->
</Viewport3D>
VideoControl.xaml
<UIElement3D x:Class="MediaElementTest.VideoControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"/>
VideoControl.xaml.cs
public partial class VideoControl
{
public VideoControl()
{
InitializeComponent();
Visual3DModel = CreateModel();
}
private GeometryModel3D CreateModel()
{
return new GeometryModel3D
{
Geometry = new MeshGeometry3D
{
Positions = new Point3DCollection
{
new Point3D(-100, -100, 0),
new Point3D(100, -100, 0),
new Point3D(100, 100, 0),
new Point3D(-100, 100, 0)
},
TextureCoordinates = new PointCollection
{
new Point(0, 1),
new Point(1, 1),
new Point(1, 0),
new Point(0, 0)
},
TriangleIndices = new Int32Collection
{
0, 1, 2,
0, 2, 3
}
},
Material = new DiffuseMaterial(new VisualBrush(new MediaElement
{
Source = new Uri("http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4", UriKind.RelativeOrAbsolute)
}))
};
}
}
