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GeoLink.cpp

Go to the documentation of this file.

#include "GeoLink.h"

namespace animal
{
namespace octree
{
    /*
     * Give us the 8 pointers to our parents
     * Plus the number of geo linked parents and their corresponding IDs in the "allParents" array
     * Also give the fact that it's a hard link (for example, that the vertex IS NOT FREE)
     * or soft link (free, but from multiresolution edition, it can be moved)
     *
     * If the geolink is a hard link, then the parameters should never be updated !
     */
GeoLink::GeoLink( vector<ConstrainedVertex*> allParents, vector<unsigned short> geoParentsIds, bool isSoftLink, ConstrainedVertex *vertex ) :
    _parents(allParents), _geoParentsIds(geoParentsIds), 
    _isSoftLink(true), _vertex(vertex),
    _alpha(0), _beta(0), _gamma(0)
{
    for( vector<ConstrainedVertex*>::iterator it = _parents.begin() ; it != _parents.end() ; ++it )
        (*it)->addChild( vertex );
        
//  //updateParameters();

    _isSoftLink = isSoftLink;
}
    
GeoLink::~GeoLink()
{
    //std::cerr << "~GeoLink()\n";

    for( vector<ConstrainedVertex*>::iterator it = _parents.begin() ; it != _parents.end() ; ++it )
    {
        Require( (*it)->isChild(_vertex) );
        if( (*it)->isChild(_vertex) )
            (*it)->removeChild( _vertex );
    }
    
    //std::cerr << "~GeoLink() end\n";
}

    /*
     * Return true IFF vertex is in geoParents
     * Require : isParent(vertex)
     */
bool GeoLink::isGeoLinkParent( ConstrainedVertex *vertex )
{
    Require( isParent( vertex) );
    
    for( vector<unsigned short>::iterator itId = _geoParentsIds.begin() ; itId != _geoParentsIds.end() ; ++itId )
        if( _parents[*itId] == vertex )
            return true;
            
    return false;
}
    
    
unsigned short GeoLink::getNGeoParents() const
{
    return _geoParentsIds.size();
}
    
    

     
     /*
      * Return true if it's a soft link, and false if it's a hard link
        */
bool GeoLink::isFree()  const
{
    return _isSoftLink;
}


/*
        * Free it : make it a soft link and no more a hard link
        * Require : !isFree()
        * Ensure : isFree()
        */
        void GeoLink::freeIt()
        {
            Require( !isFree() );
            _isSoftLink = true;
            Ensure( isFree() );
        }

        /*
        * Make it a soft link :
        * Require : isFree()
        * Require : vertices are parents
        * Ensure : isFree()
        */
        void GeoLink::softLinkIt( ConstrainedVertex *v1, ConstrainedVertex *v2  )
        {
            // MUST PROJECT IT !
            Require( isFree() );
            Require( isParent( v1 ) );
            Require( isParent( v2 ) );

            Require( _geoParentsIds.size() == 0 );

            for( unsigned short i=0 ; i<8 ; ++i )
                if( (_parents[i] == v1) || (_parents[i] == v2) )
                    _geoParentsIds.push_back(i);

            // Update coords !

            Ensure(isFree());
        }
        
        /*
        * Make it a soft link :
        * Require : isFree()
        * Require : vertices are parents
        * Ensure : isFree()
        */
        void GeoLink::softLinkIt( ConstrainedVertex *v1, ConstrainedVertex *v2, ConstrainedVertex *v3, ConstrainedVertex *v4  )
        {
            // MUST PROJECT IT !
            Require( isFree() );
            Require( isParent( v1 ) );
            Require( isParent( v2 ) );
            Require( isParent( v3 ) );
            Require( isParent( v4 ) );

            Require( _geoParentsIds.size() == 0 );

            for( unsigned short i=0 ; i<8 ; ++i )
                if( (_parents[i] == v1) || (_parents[i] == v2) || (_parents[i] == v3) || (_parents[i] == v4) )
                    _geoParentsIds.push_back(i);

            // Update coords !
            //updateParameters();

            Ensure(isFree());
        }       
        /*
        * Make it a soft link :
        * Require : isFree()
        * Require : vertices are parents
        * Ensure : isFree()
        */
        void GeoLink::softLinkIt( ConstrainedVertex *v1, ConstrainedVertex *v2, ConstrainedVertex *v3, ConstrainedVertex *v4, ConstrainedVertex *v5, ConstrainedVertex *v6, ConstrainedVertex *v7, ConstrainedVertex *v8  )
        {
            // MUST PROJECT IT !
            Require( isFree() );
            Require( isParent( v1 ) );
            Require( isParent( v2 ) );
            Require( isParent( v3 ) );
            Require( isParent( v4 ) );
            Require( isParent( v5 ) );
            Require( isParent( v6 ) );
            Require( isParent( v7 ) );
            Require( isParent( v8 ) );

            Require( _geoParentsIds.size() == 0 );

            for( unsigned short i=0 ; i<8 ; ++i )
                _geoParentsIds.push_back(i);

            // Update coords !
            //updateParameters();

            Ensure(isFree());
        }       

                
        /*
        * Make it a hard link : project the point on the line
        * Require : isFree()
        * Require : vertices are parents
        * Ensure : ! isFree()
        */
        void GeoLink::hardLinkIt( ConstrainedVertex *v1, ConstrainedVertex *v2  )
        {
            // MUST PROJECT IT !
            Require( isFree() );
            Require( isParent( v1 ) );
            Require( isParent( v2 ) );
            
            Require(v1->isChild(_vertex));
            Require(v2->isChild(_vertex));
            
            /*
            if( !v1->isChild(_vertex) )
                v1->addChild(_vertex);
            if( !v2->isChild(_vertex) )
                v2->addChild(_vertex);
            */
            // _geoParentsIds are the same for hard and soft links !
            /*
            Require( _geoParentsIds.size() == 0 );

            for( unsigned short i=0 ; i<8 ; ++i )
                if( (_parents[i] == v1) || (_parents[i] == v2) )
                    _geoParentsIds.push_back(i);
            */
            
            // Update coords !
            //updateParameters();

            _isSoftLink = false;

            Ensure( !isFree() );
        }

        /*
        * Make it a hard link : project the point on the plane
        * Require : isFree()
        * Require : vertices are parents
        */
        void GeoLink::hardLinkIt( ConstrainedVertex *v1, ConstrainedVertex *v2, ConstrainedVertex *v3, ConstrainedVertex *v4  )
        {
                    // MUST PROJECT IT !
            Require( isFree() );
            Require( isParent( v1 ) );
            Require( isParent( v2 ) );
            Require( isParent( v3 ) );
            Require( isParent( v4 ) );

            Require(v1->isChild(_vertex));
            Require(v2->isChild(_vertex));
            Require(v3->isChild(_vertex));
            Require(v4->isChild(_vertex));

            /*          
            if( !v1->isChild(_vertex) )
                v1->addChild(_vertex);
            if( !v2->isChild(_vertex) )
                v2->addChild(_vertex);
            if( !v3->isChild(_vertex) )
                v3->addChild(_vertex);
            if( !v4->isChild(_vertex) )
                v4->addChild(_vertex);
            */
            
            // _geoParentsIds are the same for hard and soft links !
            /*
            Require( _geoParentsIds.size() == 0 );

            for( unsigned short i=0 ; i<8 ; ++i )
                if( (_parents[i] == v1) || (_parents[i] == v2) || (_parents[i] == v3) || (_parents[i] == v4) )
                    _geoParentsIds.push_back(i);
            */
            
            // Update coords !
            //updateParameters();

            _isSoftLink = false;

            Ensure( !isFree() );
        }


    /*
    * Return true IFF vertex is in parents list
    * Used only for debug
    */
    bool GeoLink::isParent(  const ConstrainedVertex *vertex ) 
    {
        for( vector<ConstrainedVertex*>::iterator it = _parents.begin() ; it != _parents.end() ; ++it )
            if( *it == vertex )
                return true;

        return false;
    }
    
    void GeoLink::print()
    {
        std::cerr << "Parents :\n";
        for( vector<ConstrainedVertex*>::iterator it = _parents.begin() ; it != _parents.end() ; ++it )
            std::cerr << "\t" << *it << "\n";
        std::cerr << "Geo Parents id : ";
        for( vector<unsigned short>::iterator itId = _geoParentsIds.begin() ; itId != _geoParentsIds.end() ; ++itId )
            std::cerr << *itId << " ";
        std::cerr << "\n";
    }

    
    void GeoLink::changeCell( Cell *cell )
    {
        //std::cerr << "changeCell(" << *cell << ")\n";
        
        bool wasFree = isFree();
        
        for( vector<ConstrainedVertex*>::iterator it = _parents.begin() ; it != _parents.end() ; ++it )
        {
            Require( (*it)->isChild(_vertex) );
            if( (*it)->isChild(_vertex) )
                (*it)->removeChild( _vertex );
        }
                        
        vector<ConstrainedVertex*> newParents;
        for( unsigned short i=0 ; i<8 ; ++i )
        {
            newParents.push_back(cell->father()->vertex(i));
            newParents[i]->addChild( _vertex );
        }

        //
        
        _isSoftLink = true;

        unsigned short ngp = getNGeoParents();
        
        ConstrainedVertex *oldP[ngp];
        for( unsigned int i=0 ; i<ngp ; ++i )
            oldP[i] = getGeoParent(getGeoParentId(i));              
            
        _parents = newParents;
        _geoParentsIds.clear();
        if( ngp == 2 )
        {
            this->softLinkIt( oldP[0], oldP[1] );
        }
        else if( ngp == 4 )
        {
            this->softLinkIt( oldP[0], oldP[1], oldP[2], oldP[3] );
        }
        else if( ngp == 8 )
        {
            this->softLinkIt( oldP[0], oldP[1], oldP[2], oldP[3], oldP[4], oldP[5], oldP[6], oldP[7] );
        }
        else
        {
            // It's completely free !
        }

        // Let it be hard linked if needed      
        _isSoftLink = wasFree;
        
    }
     
}
}

        

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