buildpropositions.cpp

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/*
 Modular Psi - A graph tracker of the Parapsychologcal scientific development
 Copyright (C) 2005 Leonardo Stern

 This program is free software; you can redistribute it and/or modify it under
 the terms of the Common Public License Version 1.0 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 Common Public License for more details.

 You should have received a copy of the Common Public License along with this program;
*/

#include <qptrstack.h>
#include "buildpropositions.hpp"
#include "../core/edgelist.hpp"

BuildPropositions::BuildPropositions(Principal * cl , PropositionGraph* G)
{
    EdgeList::iterator ix = G->edges->begin();
    while ( ix != G->edges->end()) {
         (*ix) -> processBends();
         (*ix) -> show();
          ++ix;
     }

    QDictIterator<Proposition> it ( *G );
    for( ; it.current(); ++it )          {
        it.current()->show();
        it.current()->setTrust((float)-1);
    }
 
        G->operator[]("P1")->setTrust((float)1.0);
        calculeTrust(G->operator[]("P1"));
}

BuildPropositions::calculeTrust(Proposition *p)
{
    EdgeList::iterator ix = p->outgoing->begin();
    QPtrStack <Proposition> stack;
    while ( ix != p->outgoing->end()) {
        stack.push((Proposition*)(*ix)->target());
        // if trust < 0 (not set), set trust as -1 (not set)
        if ((p->trust() < 0) || ((*ix)->trust() < 0))
                (*ix)->setCombinedTrust((float)-1);
        else
                (*ix)->setCombinedTrust((float)p->trust() * (*ix)->trust());
        if ( (*ix)->combinedTrust() > stack.top()->trust() )
                stack.top()->setTrust((*ix)->combinedTrust());
                ix++;
    }
    
    while (!stack.isEmpty())
    {
        calculeTrust(stack.top());
        stack.pop();
    }
        
}
      
BuildPropositions::~BuildPropositions()
{
    //Noop
}