Using BitmapExporter to Export Png Failed on IIS (Azure Website) Environment

[fengyj]

Hi Sir,

I have a website, it allows user to upload a stl file, then the website will generate a png file for the user. I can get correct result on my local pc (hosted in IIS Express), but when I put it to Azure website, only an empty png with the background was generated without any exception. And I've tried remote debug, but found nothing.

[fengyj]

Here is the code I used to generate image.

    public static void Export(Model3DGroup model, string outputFileName)
    {
        var viewport = new Viewport3D();

        viewport.Measure(new Size(320, 240));
        viewport.Arrange(new Rect(0, 0, 320, 240));

        var root = new ModelVisual3D();
        viewport.Children.Add(root);

        var camera = new PerspectiveCamera();
        camera.Position = new Point3D(2, 16, 20);
        camera.LookDirection = new Vector3D(-2, -16, -20);
        camera.UpDirection = new Vector3D(0, 0, 1);
        camera.FieldOfView = 45;
        camera.NearPlaneDistance = 0.1;
        camera.FarPlaneDistance = double.PositiveInfinity;

        viewport.Camera = camera;

        root.Children.Add(new DefaultLights());

        root.Content = model;

        CameraHelper.ZoomExtents(camera, viewport);
        Viewport3DHelper.Export(viewport, outputFileName, Brushes.WhiteSmoke);
    }

[niklr]

I experience a similar issue without using Azure Website but IIS 10. Running the website with the help of Visual Studio (IIS Express) everything seems to be fine, but once published to IIS it produces black images only.

Any help/hint is highly appreciated!