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 *   Copyright (C) 2003-2004 by David Saxton                               *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   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.                                   *


#include "cells.h"

#include <qpoint.h>
#include <qvaluelist.h>

class ICNDocument;
class Cell;

typedef QValueList<QPoint> QPointList;
typedef QValueList<QPointList> QPointListList;

Abstraction for the routing of a connector.

NB: As a general rule of thumb, the point references stored as members of this
class are in Cell-space (i.e. 8^2 x smaller than Canvas-space), and the
interfacing functions take or give point references in Canvas-space (unless
otherwise indicated).

@author David Saxton
00035 class ConRouter
      ConRouter( ICNDocument *cv );
       * What this class is all about - finding a route, from (sx,sy) to (ex,ey).
      void mapRoute( int sx, int sy, int ex, int ey );
       * Translates the precalculated routepoints by the given amount
      void translateRoute( int dx, int dy );
       * Sets the route to the given canvas points
       * @param reverse if true, the points in pointList will be reversed
      void setPoints( const QPointList &pointList, bool reverse = false );
       * Sets the route to the given route points
      void setRoutePoints( const QPointList &pointList );
       * @returns true if the start or end points differ from that of the current route
      bool needsRouting( int sx, int sy, int ex, int ey ) const;
       * Returns the list of canvas points
      QPointList pointList( bool reverse ) const;
       * Returns a pointer to the internall cellPointList
00069       QPointList *cellPointList() { return &m_cellPointList; }
       * This will return two lists of Canvas points from the splitting of the
       * route at the Canvas point "pos". The internall stored points are not
       * affected.
      QPointListList splitPoints( const QPoint &pos ) const;
       * This will return a list of Canvas pointLists from the route, divided
       * into n parts (at n-1 equally spaced places).
      QPointListList dividePoints( uint n ) const;

       * Check a line of the ICNDocument cells for a valid route
      bool checkLineRoute( int scx, int scy, int ecx, int ecy, int maxConScore, int maxCIScore );
      void checkACell( int x, int y, Cell *prev, int prevX, int prevY, int nextScore );
      void checkCell( int x, int y ); // Gets the shortest route from the final cell
       * Remove duplicated points from the route
      void removeDuplicatePoints();
      int xcells, ycells;
      int m_lcx, m_lcy; // Last x / y from mapRoute, if we need a point on the route
      Cells *cellsPtr;
      TempLabelMap tempLabels;
      ICNDocument *p_icnDocument;
      QPointList m_cellPointList;


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