Moving rhino named view position in C#?

Rhino Developer
1

I would like to programatically perform the action of the “Place” named view button:

image

doing something like
doc.NamedViews[0].Viewport.SetCameraLocation(…)

has no effect on the document. Why? What is the correct way to do this?

2

Did you try this example?

https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Display_RhinoViewport_SetCameraLocation.htm

3

Yes. I got it working but it required a very strange approach - I had to restore the named view, modify the viewport camera, delete the named view and recreate it from the viewport. Is this the way to go?

4

Not sure but I think so. Because in Rhino it basically works the same. You can change the camera of a named view but this will not overwrite the named view automatically. What I don’t get from your comment is why you would first need to restore the named view.

5

I have to restore, because the following code has no effect:

ViewInfo vi = doc.NamedViews[0];
RhinoApp.WriteLine($"Moved {vi.Name}");
//doc.NamedViews.Delete(vi.Name);
vi.Viewport.SetCameraLocation(Point3d.Origin);
doc.NamedViews.Add(vi);

No matter if the delete line exists or not, the named view does not change.