sphere.h

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/**********************************************************************
  Sphere - Class for drawing spheres in OpenGL

  Copyright (C) 2007-2009 Jean Brefort <jean.brefort@normalesup.org>
  Copyright (C) 2006,2007 Benoit Jacob <jacob@math.jussieu.fr>

  This file is part of the Avogadro molecular editor project.
  For more information, see <http://avogadro.sourceforge.net/>

  Avogadro is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3 of the License, or
  (at your option) any later version.

  Avogadro 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  02110-1301, USA.
 **********************************************************************/

#ifndef GCU_SPHERE_H
#define GCU_SPHERE_H

namespace gcu {

class Vector;
class SpherePrivate;

class Sphere
{
private:
        SpherePrivate * const d;

protected:

        inline unsigned short indexOfVertex (int strip, int column, int row);

        void computeVertex (int strip, int column, int row);

        void freeBuffers ();
        void initialize ();

public:
        Sphere (int detail = 0);
        ~Sphere ();

        void setup (int detail);

        void draw (Vector const &center, double radius) const;
};

}

#endif  //      GCU_SPHERE_H