h o m e

d o c u m e n t a t i o n

c l a s s h i e r a r c h y

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StrokeIterators.h

//
//  Filename         : StrokeIterators.h
//  Author(s)        : Stephane Grabli
//  Purpose          : Iterators used to iterate over the elements of the Stroke
//  Date of creation : 01/07/2003
//


//
//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
//   with this source distribution. 
//
//  This program 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.
//
//  This program 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//

#ifndef  STROKEITERATORS_H
# define STROKEITERATORS_H

# include "Stroke.h"

namespace StrokeInternal {

  //
  // StrokeVertexIterator
  //

  class StrokeVertexIterator : public Interface0DIteratorNested
  {
  public:

    StrokeVertexIterator() {}

    StrokeVertexIterator(const StrokeVertexIterator& vi) {
      _it = vi._it;
      _begin = vi._begin;
      _end = vi._end;
    }

    StrokeVertexIterator(const ::Stroke::vertex_container::iterator& it,
                         const ::Stroke::vertex_container::iterator& begin,
                         const ::Stroke::vertex_container::iterator& end) {
      _it = it;
      _begin = begin;
      _end = end;
    }

    virtual ~StrokeVertexIterator() {}

    inline Interface0DIterator castToInterface0DIterator() const {
      Interface0DIterator ret(new StrokeVertexIterator(*this));
      return ret;
    }
    StrokeVertexIterator& operator=(const StrokeVertexIterator& vi) {
      _it = vi._it;
      _begin = vi._begin;
      _end = vi._end;
      return *this;
    }

    virtual string getExactTypeName() const {
      return "StrokeVertexIterator";
    }

    virtual StrokeVertex& operator*() {
      return **_it;
    }

    virtual StrokeVertex* operator->() {
      return &(operator*());
    }

    virtual StrokeVertexIterator& operator++() {
      increment();
      return *this;
    }

    virtual StrokeVertexIterator operator++(int) {
      StrokeVertexIterator ret(*this);
      increment();
      return ret;
    }

    virtual StrokeVertexIterator& operator--() {
      decrement();
      return *this;
    }

    virtual StrokeVertexIterator operator--(int) {
      StrokeVertexIterator ret(*this);
      decrement();
      return ret;
    }

    virtual void increment() {
      ++_it;
    }

    virtual void decrement() {
      --_it;
    }

    bool isBegin() const {
      return _it == _begin;
    }

    bool isEnd() const {
      return _it == _end;
    }

    virtual bool operator==(const Interface0DIteratorNested& it) const {
      const StrokeVertexIterator* it_exact = dynamic_cast<const StrokeVertexIterator*>(&it);
      if (!it_exact)
        return false;
      return (_it == it_exact->_it);
    }

    virtual float t() const{
      return (*_it)->curvilinearAbscissa();
    }
    virtual float u() const{
      return (*_it)->u();
    }

    virtual StrokeVertexIterator* copy() const {
      return new StrokeVertexIterator(*this);
    }

  //
  // Not exported in Python
  //

    const ::Stroke::vertex_container::iterator& getIt() {
    return _it;
  }

  private:

    ::Stroke::vertex_container::iterator _it;
    ::Stroke::vertex_container::iterator _begin;
    ::Stroke::vertex_container::iterator _end;
  };

} // end of namespace StrokeInternal


#endif // STROKEITERATORS_H

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Last modified 3 Mar 2008

© Stephane Grabli