Updating Camera Position from C# Component

Grasshopper
1

Hi everyone,

I wanted to create a C# script component that adds a “print layout” (probably not the right Rhino word…) based on a rectangle provided.
I followed this snippet but I got stuck at updating the camera position to the center of the provided rectangle.

Here is my code:

    private void RunScript(Rectangle3d PageRect, bool PageRectFlipped, double PageWidth, bool Metric, string LayoutName, bool Enabled, ref object A)
    {
      if (Enabled) {
        var doc = Rhino.RhinoDoc.ActiveDoc;
        if (Metric){
          doc.PageUnitSystem = UnitSystem.Millimeters;
        } else {
          doc.PageUnitSystem = UnitSystem.Inches;
        }
  
        DeleteLayoutByName(LayoutName);
  
        // sometimes the width/height of a rectangle are not what you think..
        double ActualRectWidth = PageRectFlipped ? PageRect.Height : PageRect.Width;
        double ActualRectHeight = PageRectFlipped ? PageRect.Width : PageRect.Height;
        double PageHeight = ActualRectHeight * (PageWidth / ActualRectWidth);

        var pageview = doc.Views.AddPageView(LayoutName, PageWidth, PageHeight);
        if( pageview != null )
        {
          Rhino.Geometry.Point2d top_left = new Rhino.Geometry.Point2d(0, 0);
          Rhino.Geometry.Point2d bottom_right = new Rhino.Geometry.Point2d(PageWidth, PageHeight);
          var detail = pageview.AddDetailView("ModelView", top_left, bottom_right, Rhino.Display.DefinedViewportProjection.Top);
          if (detail != null)
          {
            // center the detail view onto rectangle
            //Print(PageRect.Center.ToString());
            pageview.SetActiveDetail(detail.Id);
            detail.DetailGeometry.SetScale(ActualRectWidth, doc.ModelUnitSystem, PageWidth, doc.PageUnitSystem);
  
  

            Print("before:");
            Print(detail.Viewport.CameraLocation.ToString());
            Print(detail.Viewport.CameraTarget.ToString());

            //update camera position
            detail.Viewport.SetCameraTarget(PageRect.Center, true);
            //detail.Viewport.SetCameraLocation(PageRect.Center, true);

            Print("after:");
            Print(detail.Viewport.CameraLocation.ToString());
            Print(detail.Viewport.CameraTarget.ToString());
  
            
            //detail.DetailGeometry.IsProjectionLocked = true;
            
            // Commit changes tells the document to replace the document's detail object
            // with the modified one that we just adjusted
            detail.CommitChanges();
          }
          pageview.SetPageAsActive();
          doc.Views.ActiveView = pageview;
          doc.Views.Redraw();
        } 
      }

The output of Print() is this:

before:
0,0,100
0,0,-400.00005
after:
303.143800850039,-2.82409994843501,500.00005
303.143800850039,-2.82409994843501,0

Which indicates that the camera position was moved correctly.

But the reality looks different:

image
image1038×716 62.3 KB

Any clues?