added scene.RemoveAll() method

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2510 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/gfx/doc/scene.rst

@@ -214,7 +214,12 @@ It is interesting to note that the offset from center (`trans`) is given in rota
     
     :param obj:
     :type  obj: :class:`GfxNode`
-
+  
+  .. method:: RemoveAll()
+  
+    Remove all objects from the scene
+    
+    
   .. method:: RenderGL()
 
     Renders the scene.

modules/gfx/pymod/export_scene.cc

@@ -127,6 +127,7 @@ void export_Scene()
     .def("GetSelectionMode",&Scene::GetSelectionMode)
     .def("SetBlur",&Scene::SetBlur)
     .def("BlurSnapshot",&Scene::BlurSnapshot)
+    .def("RemoveAll", &Scene::RemoveAll)
     .def("SetShadow",&Scene::SetShadow)
     .def("SetShadowQuality",&Scene::SetShadowQuality)
     .def("AttachObserver",&Scene::AttachObserver)

modules/gfx/src/gfx_node.cc

@@ -16,6 +16,7 @@
 // along with this library; if not, write to the Free Software Foundation, Inc.,
 // 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 //------------------------------------------------------------------------------
+#include <boost/bind.hpp>
 #include <ost/dyn_cast.hh>
 #include "gfx_node.hh"
 #include "gfx_object.hh"
@@ -113,6 +114,17 @@ void GfxNode::Remove(GfxObjP obj)
     node_vector_.erase(it);
   }
 }
+using boost::bind;
+void GfxNode::RemoveAll()
+{
+  GfxNodeVector v=node_vector_;
+  node_vector_.clear();
+  for (GfxNodeVector::iterator i=v.begin(), e=v.end(); i!=e; ++i) {
+    if (GfxObjP o=dyn_cast<GfxObj>(*i)) {
+      Scene::Instance().NotifyObservers(bind(&SceneObserver::NodeRemoved, _1, o));
+    }
+  }
+}
 
 void GfxNode::Add(GfxNodeP node)
 {

modules/gfx/src/gfx_node.hh

@@ -68,6 +68,8 @@ class DLLEXPORT_OST_GFX GfxNode: public boost::enable_shared_from_this<GfxNode>
   // return name
   String GetName() const;
 
+  // remove all child nodes
+  void RemoveAll();
   // change name
   void Rename(const String& name);
 

modules/gfx/src/scene.cc

@@ -607,6 +607,12 @@ void Scene::Remove(const GfxNodeP& go)
   this->RequestRedraw();
 }
 
+void Scene::RemoveAll()
+{
+  root_node_->RemoveAll();
+  this->RequestRedraw();
+}
+
 void Scene::Remove(const String& name)
 {
   FindNode fn(name);

modules/gfx/src/scene.hh

@@ -281,6 +281,10 @@ class DLLEXPORT_OST_GFX Scene {
   void Remove(const GfxNodeP& go);
   /// remove graphical object from the scene
   void Remove(const String& name);
+  
+  /// \brief remove all objects from the scene
+  void RemoveAll();
+  
   /// \brief rename an existing graphical object
   /// defunct for now
   bool Rename(const String& old_name, const String& new_name);