BoundingBoxNode.cc

/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
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 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
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 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
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\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision: 83 $                                                         *
 *   $Author: moebius $                                                      *
 *   $Date: 2009-02-27 17:31:45 +0100 (Fr, 27. Feb 2009) $                   *
 *                                                                           *
\*===========================================================================*/




//=============================================================================
//
//  CLASS BoundingBoxNode - IMPLEMENTATION
//
//=============================================================================

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

#include "BoundingBoxNode.hh"
#include "SceneGraph.hh"
#include "../GL/gl.hh"


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

namespace ACG {
namespace SceneGraph {

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

unsigned int
BoundingBoxNode::
availableDrawModes() const
{
  return DrawModes::WIREFRAME;
}

//----------------------------------------------------------------------------
BoundingBoxNode::~BoundingBoxNode() {

}

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

void
BoundingBoxNode::
draw(GLState& /* _state */ , unsigned int _drawMode)
{

  ACG::SceneGraph::BoundingBoxAction act;
  ACG::SceneGraph::traverse(this, act);

  ACG::Vec3d bbmin = (ACG::Vec3d) act.bbMin();
  ACG::Vec3d bbmax = (ACG::Vec3d) act.bbMax();

  if (_drawMode & DrawModes::WIREFRAME)
  {
    glPushAttrib (GL_ENABLE_BIT);

    glDisable(GL_LIGHTING);

    glBegin(GL_LINES);

    glVertex3f(bbmin[0],bbmin[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmin[0],bbmin[1],bbmin[2]);

    glVertex3f(bbmin[0],bbmin[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmax[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmax[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmax[2]);
    glVertex3f(bbmin[0],bbmin[1],bbmax[2]);

    glVertex3f(bbmin[0],bbmin[1],bbmin[2]);
    glVertex3f(bbmin[0],bbmin[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmin[1],bbmax[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmax[0],bbmax[1],bbmax[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmin[2]);
    glVertex3f(bbmin[0],bbmax[1],bbmax[2]);

    glEnd();

    glPopAttrib ();
  }
}



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