New Rhino Viewport C++

Rhino Developer
1

Hi,

there is a nice example in Knowledge Base on how to create a new Rhino Viewport, but I have two additional questions:

  1. Is there a trick to make the new Viewport automatically “pop out” into a separate window (instead of dragging it out manually)
  2. Is there a way to limit a set of Conduit objects to be displayed only in that (one) Viewport, and not be seen in the other ones?

Thanks!
Milos

2

Anyone?
Thanks!

3

I believe the function you want is CRhinoDoc::CreateRhinoView

4

Hi Steve,

thanks for the response. But that didn`t help me much…especially because there is no CreateRhinoView function.

5

Sorry, I was working on OS X and was looking at the wrong header file. There is a function on CRhinoDoc called CreateDerivedRhinoView. You should be able to call it with the following code

CreateDerivedRhinoView(RUNTIME_CLASS(CRhinoView), title, RhinoApp().RhinoCurrent_UUID());

6

Here is an example of how to create a new view using C++.

7

Thanks!

I will check it out. How about the second question? Is there a way to limit (Conduit) for objects to be displayed only in (that) one view? And not be seen in any other?

8

Your conduit knows what viewport is drawing and, thus, can choose whether or not to draw.

bool CMyConduit::ExecConduit(CRhinoDisplayPipeline& dp, UINT channel, bool& terminate)
{
  CRhinoViewport& vp = dp.GetRhinoVP();
  if (vp.ViewportId() == m_my_viewport_id)
  {
    // TODO...
  }
}
9

Thanks Dale, Ill try it out.

@stevebaer I tried the CreateDerivedRhinoView (which I guess was the answer to the question about how to make a Rhino View that automatically pops out) like this:

context.m_doc.CreateDerivedRhinoView( RUNTIME_CLASS(CRhinoView), L"test", RhinoApp().RhinoCurrent_UUID() );

but Rhino is giving me the following message: Creating view class CRhinoView failed. Specified UUID is either NULL or a Rhino UUID

I dont fully understand the function so I tried replacing the UUID with different "UUID" type things, but it didnt work. Any ideas?

10

CreateDerivedRhinoView requries that you pass in a derived view, class object derived from CRhinoView.

If you just want a new floating viewport, you can always script the NewFloatingViewport command. Or, you can code up something like the following.

https://github.com/mcneel/Rhino5Samples_CPP/blob/master/SampleCommands/cmdSampleNewFloatingViewport.cpp

11

Thanks,

I used FloatRhinoView and it sufficed. If I may ask one last question on this topic…I want to completely “redesign” the new viewport and I did some things like:

CRhinoViewport& myviewport = myview->Viewport();
aeviewport.SetShowConstructionGrid(false);

But if I want to change the background color, thickness of the lines, etc. only for this viewport, how do I do that? Do i set attributes over CDisplayPipelineAttributes somehow? What is the proper way?

Thanks a lot!

12

Yes. Viewport decorations, such as grid, are drawn in the CSupportChannels::SC_DRAWBACKGROUND channel.