Method PickRender

Rendering/Core/vtkScenePicker.cxx:153–171

------------------------------------------------------------------------------ Do a selection render.. for caching object selection stuff. This is used for Object selection . We have to perform "select" and "mouse over" and "mouse out" as the mouse moves around the scene (or the mouse is clicked in the case of "select"). I do not want to do a conventional pick for this function because it's too da

// otherwise motion would be too frickin slow.
//
void vtkScenePicker::PickRender()
{
  if (!this->Renderer || !this->Renderer->GetRenderWindow())
  {
    return;
  }

  double vp[4];
  this->Renderer->GetViewport(vp);
  int size[2] = { this->Renderer->GetRenderWindow()->GetSize()[0],
    this->Renderer->GetRenderWindow()->GetSize()[1] };

  int rx1 = static_cast<int>(vp[0] * (size[0] - 1));
  int ry1 = static_cast<int>(vp[1] * (size[1] - 1));
  int rx2 = static_cast<int>(vp[2] * (size[0] - 1));
  int ry2 = static_cast<int>(vp[3] * (size[1] - 1));

  this->PickRender(rx1, ry1, rx2, ry2);
}

//------------------------------------------------------------------------------
// Do a selection render.. for caching object selection stuff.