void LayersPanel::DeleteSelectedLayers()
{
// If anything selected in the grid
if ( m_Scene && m_Grid->IsAnythingSelected() )
{
LayerSelectedItems( false );
// Begin undo batch
Undo::BatchCommandPtr batch = new Undo::BatchCommand ();
// Get an ordered list of the selected rows, and traverse the list in reverse order.
// This makes sure that removing an item doesn't change the row number of another
// item that will be removed later in the loop. If we don't do this, we run the
// risk of invalidating the selection array as we iterate over it.
const std::set< uint32_t >& selection = m_Grid->GetSelectedRows();
std::set< uint32_t >::const_reverse_iterator rowItr = selection.rbegin();
std::set< uint32_t >::const_reverse_iterator rowEnd = selection.rend();
for ( ; rowItr != rowEnd; ++rowItr )
{
M_LayerDumbPtr::iterator layerItr = m_Layers.find( m_Grid->GetRowName( *rowItr ) );
HELIUM_ASSERT( layerItr != m_Layers.end() );
// NOTE: m_Layers is changing as we iterate over the selection (items are being
// removed via callbacks), so don't hold on to any iterators that point into the list.
// Recalculate m_Layers.end() each time through the loop.
if ( layerItr != m_Layers.end() )
{
Layer* layer = layerItr->second;
// If the layer that we are about to delete is in the scene's selection list,
// we had better just clear out the selection list (otherwise the attribute
// editor will still be showing a layer that is no longer in the scene). This
// has to be done before actually deleting the layer.
if ( m_Scene->GetSelection().Contains( layer ) )
{
batch->Push( m_Scene->GetSelection().Clear() );
}
// If the layer has any members, we should remove them before removing the layer,
// otherwise if those members are deleted, they will be pointing to an invalid
// layer that will eventually be Disconnected.
S_SceneNodeSmartPtr descendents = layer->GetDescendants();
for ( S_SceneNodeSmartPtr::iterator itr = descendents.begin(), end = descendents.end(); itr != end; ++itr )
{
batch->Push( new DependencyCommand( DependencyCommand::Disconnect, layer, *itr ) );
}
// Push the command to delete the layer
batch->Push( new SceneNodeExistenceCommand( Undo::ExistenceActions::Remove, m_Scene, layer ) );
}
}
// End undo batch
m_Scene->Push( batch );
m_Scene->Execute( false );
}
}
void CurveCreateTool::AddToScene()
{
if ( !m_Instance.ReferencesObject() )
{
return;
}
if ( !m_Scene->IsEditable() )
{
return;
}
uint32_t countControlPoints = m_Instance->GetNumberControlPoints();
if ( countControlPoints > 2 )
{
m_Instance->RemoveControlPointAtIndex( countControlPoints - 1 );
m_Instance->Evaluate( GraphDirections::Downstream );
}
// remove temp reference
m_Scene->RemoveObject( m_Instance );
Undo::BatchCommandPtr batch = new Undo::BatchCommand ();
if ( !m_Created )
{
batch->Push( m_Scene->GetSelection().Clear() );
m_Created = true;
}
m_Instance->SetTransient( false );
for ( OS_HierarchyNodeDumbPtr::Iterator childItr = m_Instance->GetChildren().Begin(), childEnd = m_Instance->GetChildren().End(); childItr != childEnd; ++childItr )
{
(*childItr)->SetTransient( false );
}
// add the existence of this object to the batch
batch->Push( new SceneNodeExistenceCommand( Undo::ExistenceActions::Add, m_Scene, m_Instance ) );
// initialize
m_Instance->SetOwner( m_Scene );
m_Instance->Initialize();
// center origin
m_Instance->CenterTransform();
// append instance to selection
m_Selection.Append( m_Instance );
// commit the changes
m_Scene->Push( batch );
m_Scene->Execute( false );
m_Instance = NULL;
CreateInstance( Vector3::Zero );
}
///////////////////////////////////////////////////////////////////////////////
// Called at the end of a drag-and-drop event. Called when the user
// releases the mouse button. Moves all the selected items to be under a
// new parent (the item that was dropped onto in the tree). You cannot drop
// onto an item that is already selected (your command will be ignored if
// you do). All the reparenting is handled through the undo stack so that
// it can be undone and redone. This function does not update the tree
// hierarchy; that is handled in a callback.
//
void HierarchyOutliner::OnEndDrag( wxTreeEvent& args )
{
const wxTreeItemId& dropItem = args.GetItem();
// You can only drop on a valid item that's not already selected.
if ( dropItem.IsOk() && !m_TreeCtrl->IsSelected( dropItem ) )
{
m_TreeCtrl->Freeze();
// Reparent every selected item into the item that was dropped on
SceneGraph::HierarchyNode* newParent = GetTreeItemData( dropItem )->GetHierarchyNode();
HELIUM_ASSERT( newParent );
Undo::BatchCommandPtr batch = new Undo::BatchCommand ();
const OS_SceneNodeDumbPtr& selection = m_CurrentScene->GetSelection().GetItems();
OS_SceneNodeDumbPtr::Iterator selItr = selection.Begin();
const OS_SceneNodeDumbPtr::Iterator selEnd = selection.End();
for ( ; selItr != selEnd; ++selItr )
{
SceneGraph::HierarchyNode* hNode = Reflect::ObjectCast< SceneGraph::HierarchyNode >( *selItr );
if ( hNode )
{
batch->Push( new ParentCommand( hNode, newParent ) );
}
}
m_CurrentScene->Push( batch );
m_TreeCtrl->Thaw();
}
// else: drop target was not valid
}
///////////////////////////////////////////////////////////////////////////////
// Called when the "New Layer From Selection" button is clicked on the toolbar.
//
void LayersPanel::OnNewLayerFromSelection( wxCommandEvent& dummyEvt )
{
if ( m_Scene )
{
if(IsSelectionValid() == false)
{
return;
}
Undo::BatchCommandPtr batch = new Undo::BatchCommand ();
LayerPtr layer = new Layer();
layer->SetOwner( m_Scene );
layer->Initialize();
// Generate a name for this layer
GenerateLayerName(layer);
batch->Push( new SceneNodeExistenceCommand( Undo::ExistenceActions::Add, m_Scene, layer ) );
// Step 2: add all the selected items to the layer
const OS_SceneNodeDumbPtr& selection = m_Scene->GetSelection().GetItems();
OS_SceneNodeDumbPtr::Iterator itr = selection.Begin();
OS_SceneNodeDumbPtr::Iterator end = selection.End();
for ( ; itr != end; ++itr )
{
//If the element is a supported type
if( *itr )
{
SceneNode* node = Reflect::SafeCast< SceneNode >( *itr );
if ( node )
{
batch->Push( new DependencyCommand( DependencyCommand::Connect, layer, node ) );
}
}
}
m_Scene->Push( batch );
m_Scene->Execute( false );
}
}
///////////////////////////////////////////////////////////////////////////////
// Adds undoable commands to m_Scene's undo queue which will do one of two thing:
//
// Either...
// 1. Adds the currently selected scene items to the currently highlighted
// layers. Set addToLayer to true for this option.
// or...
// 2. Removes the currently selected scene items from the currently highlighted
// layers. Set addToLayer to false for this option.
//
// If there are no selected items, or no selected layers, nothing happens. It
// is also safe to remove items from a layer even if they are not part of the
// layer (nothing happens), or add items to a layer that already belong to
// that layer (again, nothing happens).
//
void LayersPanel::LayerSelectedItems( bool addToLayer )
{
HELIUM_ASSERT( m_Scene );
// Decide whether we are adding the selected scene items to the highlighted
// layers, or removing the items from the layers.
const DependencyCommand::DependencyAction action = addToLayer ? DependencyCommand::Connect : DependencyCommand::Disconnect;
// If there are selected nodes in the scene, and selected rows in this control...
const OS_SceneNodeDumbPtr& selectedNodes = m_Scene->GetSelection().GetItems();
std::set< uint32_t > selectedRows = m_Grid->GetSelectedRows();
if ( selectedNodes.Size() > 0 && selectedRows.size() > 0 )
{
//Log::Debug( "LayerSelectedItems\n" );
Undo::BatchCommandPtr batch = new Undo::BatchCommand ();
OS_SceneNodeDumbPtr::Iterator nodeItr = selectedNodes.Begin();
OS_SceneNodeDumbPtr::Iterator nodeEnd = selectedNodes.End();
std::set< uint32_t >::const_iterator rowItr;
const std::set< uint32_t >::const_iterator rowEnd = selectedRows.end();
const M_LayerDumbPtr::const_iterator layerEnd = m_Layers.end();
// For each node in the scene's selection list...
for ( ; nodeItr != nodeEnd; ++nodeItr )
{
// ensure that we are not trying to add one layer to another layer
{
Layer* layerTest = Reflect::SafeCast< Layer >( *nodeItr );
if( layerTest )
{
continue;
}
}
//Check the current selection
if( *nodeItr == NULL )
{
//Invalid or incompatible
continue;
}
SceneNode* node = Reflect::SafeCast< SceneNode >( *nodeItr );
if ( node )
{
// For each row that is highlighted...
for ( rowItr = selectedRows.begin(); rowItr != rowEnd; ++rowItr )
{
// Find the layer that goes with the highlighted row
M_LayerDumbPtr::iterator layerItr = m_Layers.find( m_Grid->GetRowName( *rowItr ) );
if ( layerItr != layerEnd )
{
// Check to see if the node is already in the current layer...
Layer* layer = layerItr->second;
S_SceneNodeSmartPtr::const_iterator foundDescendant = layer->GetDescendants().find( node );
// If the node is already in this layer, and we are suppose to be adding the node to the layer,
// just skip the command (doCommand = false). If the node is not in this layer, and we are
// suppose to be removing the node from the layer, skip the command as well. Otherwise, go
// ahead and carry out the command (doCommand = true).
const bool doCommand = addToLayer ? ( foundDescendant == layer->GetDescendants().end() ) : ( foundDescendant != layer->GetDescendants().end() );
if ( doCommand )
{
// Finally make an undoable command to add/remove the node to/from the layer
batch->Push( new DependencyCommand( action, layer, node ) );
//Log::Debug( "\t\t%s node %s %s layer %s [row=%d]\n", addToLayer ? "Added" : "Removed", node->GetName().c_str(), addToLayer ? "to" : "from", layer->GetName().c_str(), *rowItr );
}
else
{
//Log::Debug( "\t\tNode %s was already a member of layer %s [row=%d]\n", node->GetName().c_str(), layer->GetName().c_str(), *rowItr );
}
}
else
{
// Something is wrong. The rows that are selected in the grid do not correspond to
// items in our list of layers (m_Layers). Somehow those lists got out of sync.
Log::Error( TXT( "Unable to add selection to layer [row=%d] because it doesn't exist\n" ), *rowItr );
HELIUM_BREAK();
}
}
}
}
//Log::Debug( "\n" );
if( !batch->IsEmpty() )
{
m_Scene->Push( batch );
m_Scene->Execute( false );
}
}
}
