Method StartPositionProp

Rendering/VR/vtkVRInteractorStyle.cxx:384–427

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//------------------------------------------------------------------------------
void vtkVRInteractorStyle::StartPositionProp(vtkEventDataDevice3D* edata)
{
  if (this->GrabWithRay)
  {
    if (!this->HardwareSelect(edata->GetDevice(), true))
    {
      return;
    }

    vtkSelection* selection = this->HardwarePicker->GetSelection();

    if (!selection || selection->GetNumberOfNodes() == 0)
    {
      return;
    }

    vtkSelectionNode* node = selection->GetNode(0);
    this->InteractionProp =
      vtkProp3D::SafeDownCast(node->GetProperties()->Get(vtkSelectionNode::PROP()));
  }
  else
  {
    double pos[3];
    edata->GetWorldPosition(pos);
    this->FindPickedActor(pos, nullptr);
  }

  if (this->InteractionProp == nullptr)
  {
    return;
  }

  this->InteractionState[static_cast<int>(edata->GetDevice())] = VTKIS_POSITION_PROP;
  this->InteractionProps[static_cast<int>(edata->GetDevice())] = this->InteractionProp;

  // Don't start action if a controller is already positioning the prop
  int rc = static_cast<int>(vtkEventDataDevice::RightController);
  int lc = static_cast<int>(vtkEventDataDevice::LeftController);
  if (this->InteractionProps[rc] == this->InteractionProps[lc])
  {
    this->EndPositionProp(edata);
    return;
  }
}

//------------------------------------------------------------------------------
void vtkVRInteractorStyle::EndPositionProp(vtkEventDataDevice3D* edata)