/* 
 * arrow_data.h -- ePiX implementation class for arrows
 *
 * This file is part of ePiX, a C++ library for creating high-quality 
 * figures in LaTeX 
 *
 * Version 1.1.8
 * Last Change: July 19, 2007
 */

/* 
 * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
 * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
 * Department of Mathematics and Computer Science
 * College of the Holy Cross
 * Worcester, MA, 01610-2395, USA
 */

/*
 * ePiX 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 2 of the License, or
 * (at your option) any later version.
 *
 * ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef EPIX_ARROW_DATA
#define EPIX_ARROW_DATA

#include <list>
#include <vector>

#include "triples.h"
#include "edge_data.h"

namespace ePiX {

  class Camera;
  class Color;
  class halfspace;
  class pen_data;
  class screen;

  // sequence of vertices
  class arrow_data {
  public:
    arrow_data(const std::vector<P>&, const P& base, const P& tip,
	       double scale=1);

    arrow_data& clip();
    arrow_data& clip_to(const halfspace&);

    void photo(screen&, const Camera&, const pen_data&, const pen_data&) const;

    void draw() const;
    void draw(const pen_data&, const pen_data&) const;

  private:
    // head data
    P m_base, m_tip;
    double m_scale; // size multiplier
    bool m_head_seen;

    // shaft
    std::list<edge3d> m_shaft;
  }; // end of class arrow_data

} // end of namespace

#endif /* EPIX_ARROW_DATA */