Trouble plotting with ILNumerics in LinqPad - ILPanel think it is in design mode

Question

I'm having some trouble using ILNumerics in LinqPad. I have the following code in LinqPad:

void Main()
{
    var scene = new ILScene {
        new ILPlotCube(twoDMode: false) {
            new ILSurface(ILSpecialData.sincf(40, 60, 2.5f)) {
                Wireframe = { Color = Color.FromArgb(50, Color.LightGray) },
                Colormap = Colormaps.Jet
            }
        }
    };

    scene.First<ILPlotCube>().Rotation = Matrix4.Rotation(new Vector3(1f, 0.23f, 1f), 0.7f);
    scene.Camera.Add(new ILSphere());

    var panel = new ILPanel { Scene = scene };

    PanelManager.DisplayControl(panel);
}

This code results in a big blue circle (with the text "ILNumerics ILPanel (OpenGL)" in the center) in the "custom" linqpad tab. The "Results" tab in linqpad contains the following text:

Determining Design Mode...
 Entry Assembly: (null)
 CurrentTypeAssembly: ILNumerics32, Version=3.1.0.0, Culture=neutral, PublicKeyToken=null
 Loaded Assemblies:

Design Mode: True

Questions:

Is possible render this as a WPF element instead of a WinForms control? (I guess this will render the plot successfully)
Alternatively; is it possible to "trick" the ILPanel to think it isn't being rendered in design mode?

score 1 · Answer 1 · answered Jul 03 '13 at 03:33

1

Yes, you can render WPF controls in LINQPad - either by using PanelManager.DisplayWpfElement (or just by dumping it).

I don't think it will help you though, because ILNumerics uses Windows Forms only. It doesn't reference any of the WPF libraries.

I don't know whether it's possible to trick ILNumerics into thinking it's not in design mode. Take a look in Reflector at ILNumerics.Drawing.ILHelper.IsDesignMode. It's doing something dodgy with referenced assemblies. I don't know why they don't just check the control's DesignMode property - that's the normal way of doing it.

answered Jul 03 '13 at 03:33

Joe Albahari

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Thanks, that's what I suspected. Too bad I can't use this, otherwise nice lib, for 3D my 3D plotting needs. :'( – JohannesH Jul 03 '13 at 07:56
Maybe you could raise it with them. – Joe Albahari Jul 03 '13 at 10:06
The normal way of checking DesignMode is simply not working for us. See this blog post: http://www.undermyhat.org/blog/2009/07/in-depth-a-definitive-guide-to-net-user-controls-usage-mode-designmode-or-usermode. – Haymo Kutschbach Jul 03 '13 at 10:10
In dynamic environments like LINQPad, Assembly.GetEntryAssembly() will return null, which is why this fails. If you wanted to special-case LINQPad, there's a simple check: AppDomain.CurrentDomain.FriendlyName.StartsWith("LINQPad") – Joe Albahari Jul 04 '13 at 01:37

Haymo Kutschbach · Accepted Answer · 2013-07-03T10:44:08.270

1) ILNumerics targets Winforms only. But you may try to use a WPF WindowsFormsHost container? I don't have any experience with it and do not expect an improvement for your situation though.

2) The way ILNumerics is checking DesignMode right now: if the executing assembly (ILNumerics.dll) is not in the list of references of the entry assembly (LinqPad), DesignMode is considered. Therefore, I can see 2 "tricks":

Make LinqPad depend on ILNumerics. Probably not the best solution though.
Patch ILNumerics: Alter the helper method refered to by Joe Albahari to return false instead.

The second "trick" may could lead us to a future solution. I don't know, if the "normal" DesignMode property does work in conjunction with LinqPad either? Maybe we could combine the existing method with a settings switch for all uncommon cases.

Thanks for your comments and suggestions. However I think I'll stick with 2D plotting (OxyPlot) for the time being. — JohannesH, Jul 03 '13 at 13:41

Trouble plotting with ILNumerics in LinqPad - ILPanel think it is in design mode

2 Answers2