Method ComputeInteractionState

Interaction/Widgets/vtkBoxRepresentation.cxx:1407–1482

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//------------------------------------------------------------------------------
int vtkBoxRepresentation::ComputeInteractionState(int X, int Y, int modify)
{
  // Okay, we can process this. Try to pick handles first;
  // if no handles picked, then pick the bounding box.
  if (!this->Renderer || !this->Renderer->IsInViewport(X, Y))
  {
    this->InteractionState = vtkBoxRepresentation::Outside;
    return this->InteractionState;
  }

  // Try and pick a handle first
  this->LastPicker = nullptr;
  this->CurrentHandle = nullptr;

  vtkAssemblyPath* path = this->GetAssemblyPath(X, Y, 0., this->HandlePicker);

  if (path != nullptr)
  {
    this->ValidPick = 1;
    this->LastPicker = this->HandlePicker;
    this->CurrentHandle = reinterpret_cast<vtkActor*>(path->GetFirstNode()->GetViewProp());
    if (this->CurrentHandle == this->Handle[0])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF0;
    }
    else if (this->CurrentHandle == this->Handle[1])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF1;
    }
    else if (this->CurrentHandle == this->Handle[2])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF2;
    }
    else if (this->CurrentHandle == this->Handle[3])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF3;
    }
    else if (this->CurrentHandle == this->Handle[4])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF4;
    }
    else if (this->CurrentHandle == this->Handle[5])
    {
      this->InteractionState = vtkBoxRepresentation::MoveF5;
    }
    else if (this->CurrentHandle == this->Handle[6])
    {
      this->InteractionState = vtkBoxRepresentation::Translating;
    }
  }
  else // see if the hex is picked
  {
    path = this->GetAssemblyPath(X, Y, 0., this->HexPicker);

    if (path != nullptr)
    {
      this->LastPicker = this->HexPicker;
      this->ValidPick = 1;