/*!
\brief PrepareMapperQueue iterates the datatree
PrepareMapperQueue iterates the datatree in order to find mappers which shall be rendered. Also, it sortes the mappers
wrt to their layer.
*/
void mitk::VtkPropRenderer::PrepareMapperQueue()
{
// variable for counting LOD-enabled mappers
m_NumberOfVisibleLODEnabledMappers = 0;
// Do we have to update the mappers ?
if (m_LastUpdateTime < GetMTime() || m_LastUpdateTime < this->GetCurrentWorldPlaneGeometry()->GetMTime())
{
Update();
}
else if (m_MapperID >= 1 && m_MapperID < 6)
Update();
// remove all text properties before mappers will add new ones
m_TextRenderer->RemoveAllViewProps();
for (unsigned int i = 0; i < m_TextCollection.size(); i++)
{
m_TextCollection[i]->Delete();
}
m_TextCollection.clear();
// clear priority_queue
m_MappersMap.clear();
int mapperNo = 0;
// DataStorage
if (m_DataStorage.IsNull())
return;
DataStorage::SetOfObjects::ConstPointer allObjects = m_DataStorage->GetAll();
for (DataStorage::SetOfObjects::ConstIterator it = allObjects->Begin(); it != allObjects->End(); ++it)
{
const DataNode::Pointer node = it->Value();
if (node.IsNull())
continue;
const mitk::Mapper::Pointer mapper = node->GetMapper(m_MapperID);
if (mapper.IsNull())
continue;
bool visible = true;
node->GetVisibility(visible, this, "visible");
// The information about LOD-enabled mappers is required by RenderingManager
if (mapper->IsLODEnabled(this) && visible)
{
++m_NumberOfVisibleLODEnabledMappers;
}
// mapper without a layer property get layer number 1
int layer = 1;
node->GetIntProperty("layer", layer, this);
int nr = (layer << 16) + mapperNo;
m_MappersMap.insert(std::pair<int, Mapper *>(nr, mapper));
mapperNo++;
}
}
void mitk::VtkPropRenderer::ReleaseGraphicsResources(vtkWindow* /*renWin*/)
{
if( m_DataStorage.IsNull() )
return;
DataStorage::SetOfObjects::ConstPointer allObjects = m_DataStorage->GetAll();
for (DataStorage::SetOfObjects::const_iterator iter = allObjects->begin(); iter != allObjects->end(); ++iter)
{
DataNode::Pointer node = *iter;
if ( node.IsNull() )
continue;
Mapper * mapper = node->GetMapper(m_MapperID);
if (mapper)
{
VtkMapper* vtkmapper = dynamic_cast<VtkMapper*>( mapper );
if(vtkmapper)
vtkmapper->ReleaseGraphicsResources(this);
}
}
}
mitk::DataNode *
mitk::VtkPropRenderer::PickObject( const Point2D &displayPosition, Point3D &worldPosition ) const
{
if ( m_VtkMapperPresent )
{
m_CellPicker->InitializePickList();
// Iterate over all DataStorage objects to determine all vtkProps intended
// for picking
DataStorage::SetOfObjects::ConstPointer allObjects = m_DataStorage->GetAll();
for ( DataStorage::SetOfObjects::ConstIterator it = allObjects->Begin();
it != allObjects->End();
++it )
{
DataNode *node = it->Value();
if ( node == NULL )
continue;
bool pickable = false;
node->GetBoolProperty( "pickable", pickable );
if ( !pickable )
continue;
VtkMapper *mapper = dynamic_cast < VtkMapper * > ( node->GetMapper( m_MapperID ) );
if ( mapper == NULL )
continue;
vtkProp *prop = mapper->GetVtkProp( (mitk::BaseRenderer *)this );
if ( prop == NULL )
continue;
m_CellPicker->AddPickList( prop );
}
// Do the picking and retrieve the picked vtkProp (if any)
m_CellPicker->PickFromListOn();
m_CellPicker->Pick( displayPosition[0], displayPosition[1], 0.0, m_VtkRenderer );
m_CellPicker->PickFromListOff();
vtk2itk( m_CellPicker->GetPickPosition(), worldPosition );
vtkProp *prop = m_CellPicker->GetViewProp();
if ( prop == NULL )
{
return NULL;
}
// Iterate over all DataStorage objects to determine if the retrieved
// vtkProp is owned by any associated mapper.
for ( DataStorage::SetOfObjects::ConstIterator it = allObjects->Begin();
it != allObjects->End();
++it)
{
DataNode::Pointer node = it->Value();
if ( node.IsNull() )
continue;
mitk::Mapper * mapper = node->GetMapper( m_MapperID );
if ( mapper == NULL)
continue;
mitk::VtkMapper * vtkmapper = dynamic_cast< VtkMapper * >(mapper);
if(vtkmapper){
//if vtk-based, then ...
if ( vtkmapper->HasVtkProp( prop, const_cast< mitk::VtkPropRenderer * >( this ) ) )
{
return node;
}
}
}
return NULL;
}
else
{
return Superclass::PickObject( displayPosition, worldPosition );
}
};