void SelectionPlugin::onMouseButtonRelease( const MouseButtonEvent& event )
{
if( event.button != MouseButton::Left )
return;
SceneDocument* sceneDocument = (SceneDocument*) editor->getDocument();
sceneDocument->getRenderWindow()->setCursorCapture(false);
editor->getDocument()->getWindow()->flagRedraw();
SelectionOperation* selection = nullptr;
if(selections->dragRectangle)
selection = processDragSelection(event);
else
selection = processSelection(event);
if( !selection ) return;
const SelectionCollection& selected = selections->getSelections();
// Prevent duplication of selection events.
if( selected.isSame(selection->selections) )
{
LogDebug("Ignoring duplicated selection");
Deallocate(selection);
return;
}
selection->redo();
UndoManager* undoManager = sceneDocument->getUndoManager();
undoManager->registerOperation(selection);
}
SelectionOperation* SelectionPlugin::createDeselection()
{
// If there is a current selection, and the user pressed the mouse,
// then we need to unselect everything that is currently selected.
SelectionOperation* selection = CreateSelectionOperation("Deselection");
selection->setPreviousSelections( selections->getSelections() );
return selection;
}
SelectionOperation* CreateEntitySelectionOperation(const EntityPtr& entity)
{
SelectionManager* selections = GetPlugin<SelectionPlugin>()->getSelectionManager();
if( !selections ) return nullptr;
SelectionOperation* selection = CreateSelectionOperation("Entity selection");
selection->selections.addEntity(entity);
selection->setPreviousSelections( selections->getSelections() );
return selection;
}
void SelectionPlugin::onUndoOperation( const UndoOperationPtr& operation )
{
assert( operation != nullptr );
Class* klass = operation->getType();
if( !ClassInherits(klass, ReflectionGetType(SelectionOperation)) )
return;
SelectionOperation* selection = RefCast<SelectionOperation>(operation).get();
selection->redo();
}
SelectionOperation* SelectionPlugin::processDragSelection(const MouseButtonEvent& event)
{
SceneDocument* sceneDocument = (SceneDocument*) editor->getDocument();
Scene* scene = sceneDocument->scene.get();
RenderView* view = sceneDocument->sceneWindow->getView();
Camera* camera = sceneDocument->sceneWindow->getCamera().get();
Overlay* overlay = selections->dragRectangle->getComponent<Overlay>().get();
const Vector3& pos = overlay->getOffset();
const Vector3& size = overlay->getSize();
Frustum pickVolume = camera->getVolume(pos.x, pos.x+size.x, pos.y, pos.y+size.y);
RayQueryList list;
scene->doRayVolumeQuery(pickVolume, list);
sceneDocument->editorScene->entities.remove(selections->dragRectangle);
selections->dragRectangle.reset();
if( list.empty() )
{
SelectionOperation* selection = createDeselection();
return selection;
}
#if 0
// If we are in additive mode, don't create a new selection.
if( selected && additiveMode )
selection = selected;
#endif
// If there is no current selection, create a new one.
SelectionOperation* selection = CreateSelectionOperation("Drag Selection");
selection->setPreviousSelections( selections->getSelections() );
SelectionCollection& selections = selection->selections;
for( size_t i = 0; i < list.size(); i++ )
{
// Add the picked selection to the selection collection.
selections.addEntity( list[i].entity );
}
#if 0
if( selected && !additiveMode )
selection->previous = selected->selections;
#endif
return selection;
}
SelectionOperation* SelectionPlugin::processSelection(const MouseButtonEvent& event)
{
SelectionOperation* selection = nullptr;
EntityPtr entity;
if( !getPickEntity(event.x, event.y, entity) )
{
selection = createDeselection();
return selection;
}
selection = CreateSelectionOperation("Selection");
selection->selections.addEntity(entity);
selection->setPreviousSelections( selections->getSelections() );
return selection;
}