Fix core ruler plugin

fixes https://www.graphics.rwth-aachen.de:9000/OpenFlipper-Free/OpenFlipper-Free/issues/152

libs_required/ACG/Scenegraph/LineNode.cc

@@ -232,6 +232,11 @@ void
 LineNode::
 draw(GLState&  _state  , const DrawModes::DrawMode& _drawMode)
 {
+  if(_state.compatibilityProfile())
+    drawCompat(_state, _drawMode);
+  else
+  {
+    /* //Node Based Drawing is not supported on Core profiles
   if (_drawMode & DrawModes::WIREFRAME)
   {
     ACG::GLState::disable(GL_LIGHTING);
@@ -343,6 +348,7 @@ draw(GLState&  _state  , const DrawModes::DrawMode& _drawMode)
     }
 
     //glEnd();
+  }*/
   }
 }
   
@@ -364,13 +370,15 @@ leave(GLState& _state , const DrawModes::DrawMode& _drawMode)
 
 void LineNode::pick(GLState&  _state , PickTarget _target)
 {
+  if(_state.compatibilityProfile())
+    pickCompat(_state, _target);
+  else
+  {
   if (n_points() == 0)
     return;
 
   // Bind the vertex array
   ACG::GLState::bindBuffer(GL_ARRAY_BUFFER_ARB, 0);
-  ACG::GLState::vertexPointer( &(points_)[0] );
-  ACG::GLState::enableClientState(GL_VERTEX_ARRAY);
 
   const size_t n_edges = n_points() - 1;
 
@@ -393,53 +401,14 @@ void LineNode::pick(GLState&  _state , PickTarget _target)
     default:
       break;
   }
-
-  //Disable the vertex array
-  ACG::GLState::disableClientState(GL_VERTEX_ARRAY);
+  }
 }
 
 //----------------------------------------------------------------------------
 
 void LineNode::pick_edges(GLState& _state, unsigned int _offset)
 {
-  // Check if we have any edges to draw (% 0 causes division by zero on windows)
-  if (n_points() < 2)
-    return;
-
-  const float line_width_old = _state.line_width();
-  _state.set_line_width(picking_line_width());
-  _state.pick_set_name (0);
-
-  glDepthRange(0.0, 0.99);
-
-  if (line_mode_ == PolygonMode)
-  {
-    const size_t n_edges = n_points() - 1;
-    for (size_t i = 0; i < n_edges; ++i)
-    {
-      _state.pick_set_name(i + _offset);
-      glBegin(GL_LINES);
-      glArrayElement(static_cast<GLint>(i));
-      glArrayElement(static_cast<GLint>(i + 1));
-      glEnd();
-    }
-  }
-  else if (line_mode_ == LineSegmentsMode)
-  {
-    const size_t n_edges = n_points() / 2;
-    for (size_t i = 0; i < n_edges; ++i)
-    {
-      _state.pick_set_name(i + _offset);
-      glBegin(GL_LINES);
-      glArrayElement(static_cast<GLint>(2*i));
-      glArrayElement(static_cast<GLint>(2*i + 1));
-      glEnd();
-    }
-  }
-
-  glDepthRange(0.0, 1.0);
-
-  _state.set_line_width(line_width_old);
+  //TODO: implement edge picking for lines in CoreProfile
 }
 
 //----------------------------------------------------------------------------