LineNode.cc 5.27 KB
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/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  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:                                                    *
 *                                                                           *
 *  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.                        *
 *                                                                           *
 *  OpenFlipper is distributed in the hope that it will be useful,           *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
 *  GNU Lesser General Public License for more details.                      *
 *                                                                           *
 *  You should have received a copy of the GNU LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
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 *   $Revision$                                                       *
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 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/
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//=============================================================================
//
//  CLASS LineNode - IMPLEMENTATION
//
//=============================================================================

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

#include "LineNode.hh"
#include "../GL/gl.hh"


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

namespace ACG {
namespace SceneGraph {

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


void
LineNode::
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boundingBox(Vec3d& _bbMin, Vec3d& _bbMax)
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{
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  Vec3f bbMin(FLT_MAX,FLT_MAX,FLT_MAX);
  Vec3f bbMax(-FLT_MAX,-FLT_MAX,-FLT_MAX);
  
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  ConstPointIter p_it=points_.begin(), p_end=points_.end();
  for (; p_it!=p_end; ++p_it)
  {
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      bbMax.maximize(*p_it);
      bbMin.minimize(*p_it);
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  }
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  Vec3d bbMind = ACG::Vec3d(bbMin);
  Vec3d bbMaxd = ACG::Vec3d(bbMax);
  
  _bbMin.minimize(bbMind);
  _bbMax.maximize(bbMaxd);
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}


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


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


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


void
LineNode::
draw(GLState& /* _state */ , unsigned int _drawMode)
{
  glDepthFunc(depthFunc());

  if (_drawMode & DrawModes::WIREFRAME)
  {
    glDisable(GL_LIGHTING);

    if (line_mode_ == LineSegmentsMode)
      glBegin(GL_LINES);
    else
      glBegin(GL_LINE_STRIP);

    if ((line_mode_ == LineSegmentsMode) && (points_.size()/2 == colors_.size()) )
    {
      ConstPointIter p_it=points_.begin(), p_end=points_.end();
      ConstColorIter c_it=colors_.begin();

      int cnt = 0;
      for (; p_it!=p_end; ++p_it)
      {
        if ((cnt > 0) && (cnt % 2 == 0))
          ++c_it;

        glColor(*c_it);
        glVertex(*p_it);

        ++cnt;
      }
    }
    else
    {
      ConstPointIter p_it=points_.begin(), p_end=points_.end();
      for (; p_it!=p_end; ++p_it)
        glVertex(*p_it);
    }

    glEnd();
  }

  glDepthFunc(GL_LESS);
}



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