SceneGraph.cc

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\*===========================================================================*/




//=============================================================================
//
//  CLASS SceneGraph - IMPLEMENTATION
//
//=============================================================================

//== INCLUDES =================================================================


#include <ACG/Scenegraph/SceneGraph.hh>


//== NAMESPACES ============================================================== 

namespace ACG {
namespace SceneGraph {


//== IMPLEMENTATION ========================================================== 

BaseNode* find_node(BaseNode* _root, unsigned int _node_idx) 
{
  FindNodeAction action(_node_idx);
  traverse(_root, action);
  return action.node_ptr();
}


//----------------------------------------------------------------------------

BaseNode* find_hidden_node(BaseNode* _root, unsigned int _node_idx)
{
  FindNodeAction action(_node_idx);
  traverse_all(_root, action);
  return action.node_ptr();
}


//----------------------------------------------------------------------------


bool PickAction::operator()(BaseNode* _node)
{
  // If picking is disabled for the given Node, return here
  // As this is not a failure return true;
  if ( !_node->pickingEnabled() )
    return true;
  
  ACG::GLState::disable(GL_LIGHTING);
  ACG::GLState::disable(GL_DITHER);
  ACG::GLState::shadeModel(GL_FLAT);

  state_.pick_push_name ((GLuint) _node->id());

  _node->pick(state_, pickTarget_);

  state_.pick_pop_name ();
  return true;
}

bool PickAction::operator()(BaseNode* _node, GLState& /*_state*/) {
  return operator()(_node);
}


//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================