-ViewCaptureToFile in C# (or C++)

dimcic · May 24, 2019, 5:32pm

Hi,

I have a simple question. How would I go about automating the ViewCaptureToFile in C# (or maybe in C++ if it is easier, although I doubt). And I am talking about “full” option where I can determine which View I want (in code), set the resolution and the output file path?

Is there a “code” way, or only the RunScript way? If only RunScript, then what would be the right syntax?

Thanks!

lando.schumpich · May 24, 2019, 7:56pm

HI @dimcic,
I have an old script lying around in python which i used to capture named views to bitmaps.
It’s all Rhinocommon so it should pretty much translate the same to C# (except the saving part).

Have a look if this helps you along

import Rhino
import scriptcontext as sc
import System

def captureAllNamedViews():
        
    folder = System.Environment.SpecialFolder.Desktop
    path = System.Environment.GetFolderPath(folder)

    sc.doc.Views.RedrawEnabled = False
    
    for i, viewInfo in enumerate(sc.doc.NamedViews):
                
        # create new viewCapture object
        viewCapture = Rhino.Display.ViewCapture()
        name = viewInfo.Name
        
        rhinoView = sc.doc.Views.Add(name, Rhino.Display.DefinedViewportProjection.Top, viewInfo.Viewport.ScreenPort, True)
        sc.doc.NamedViews.Restore(i, rhinoView.ActiveViewport)

        viewCapture.Width = rhinoView.Size.Width
        viewCapture.Height = rhinoView.Size.Height

    
        bitmap = viewCapture.CaptureToBitmap(rhinoView)
        if bitmap:
            filename = System.IO.Path.Combine(path + "\\" + name, ".png");
            bitmap.UnlockBits()
            bitmap.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
            
        rhinoView.Close()
        
    sc.doc.Views.RedrawEnabled = True
    
if __name__ == "__main__":
    captureAllNamedViews()

dale · May 25, 2019, 12:42am

Here is a cheap sample in C#:

github.com

mcneel/rhino-developer-samples/blob/6/rhinocommon/cs/SampleCsCommands/SampleCsViewCapture.cs

using System;
using System.IO;
using Rhino;
using Rhino.Commands;
using Rhino.Display;

namespace SampleCsCommands
{
  public class SampleCsViewCapture : Command
  {
    public override string EnglishName => "SampleCsViewCapture";

    protected override Result RunCommand(RhinoDoc doc, RunMode mode)
    {
      var view = doc.Views.ActiveView;
      if (null == view)
        return Result.Failure;

      var view_capture = new ViewCapture
      {

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– Dale

Will_Wang · August 1, 2019, 9:54pm

How do I specify display mode for the temporarily created RhinoView?

I did this
rhinoView.ActiveViewport.DisplayMode = a_display_mode
but after export everything is still in wireframe

Baris · August 1, 2019, 10:07pm

for a gh component I did it like this,maybe this helps?

Rhino.Display.DisplayModeDescription displaymode = Rhino.Display.DisplayModeDescription.FindByName(display);
                    System.Drawing.Bitmap image = view.CaptureToBitmap(new System.Drawing.Size(w, h), displaymode);

Will_Wang · August 1, 2019, 10:30pm

It worked! Thanks!
This CaptureToBitmap() is a method of more than one class and the one from ViewCapture doesn’t have overload with a DisplayModeDescription parameter. A little confusing…

Will_Wang · August 2, 2019, 12:46pm

somehow the captures wouldn’t “render” the object correctly in display modes other than shaded, rendered and wireframe. It was set to “Artistic” but it’s just wireframe with that papyrus background…

What could be the problem?

Baris · August 2, 2019, 1:35pm

Hi ,
I `ve never noticed that,since I never used the Artistic mode, but I now that I tried the same happened to me.
After changing the displaymode manually to Artisitc(and then back to another), the object rendered correctly.

I have no idea why this happens.

Will_Wang · August 2, 2019, 2:13pm

maybe worthy of a bug report?