[vtkusers] vtk widgets start on specified point

[Vincent LEFORT]

Hello,

I'm trying to use vtk widgets (vtkDistanceWidget, vtkAngleWidget,...) in a software.

I have a vtkInteractorStyle on my vtkRenderWindowInteractor and I try to make a vtkDistanceWidget inside my vtkInteractorStyle and define the first point to a specified X and Y value.

The code :

vtkPointHandleRepresentation2D* pointHandle = vtkPointHandleRepresentation2D::New();
  pointHandle->GetProperty()->SetColor(1,0,1);

  vtkDistanceRepresentation2D* representation = vtkDistanceRepresentation2D::New();
  representation->SetTolerance(15);
  representation->SetHandleRepresentation(pointHandle) ;
  representation->InstantiateHandleRepresentation();

  distanceWidgetMem = vtkDistanceWidget::New();
  distanceWidgetMem->SetInteractor(interactor) ;

  distanceWidgetMem->SetRepresentation(representation);
  distanceWidgetMem->CreateDefaultRepresentation();

  distanceWidgetMem->On();


With this code, the next time i will press on left button, the widget will be shown and run as wanted. But I wanted to set the first point to my X, Y directly.

One method is to call (after the On) :

interactor->SetEventInformation(event.newX,event.newY);
interactor->InvokeEvent(vtkCommand::LeftButtonPressEvent);

But it's not a very good solution to fake an event and call this event twice...

Thanks.

Vincent



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