C++ (Cpp) PolygonCostCalculator::update Examples

Example #1

File: costcalculator.cpp Project: ACorradini/QGIS

  void CostCalculator::setCandidateCostFromPolygon( LabelPosition* lp, RTree <PointSet*, double, 2, double> *obstacles, double bbx[4], double bby[4] )
  {

    double amin[2];
    double amax[2];

    PolygonCostCalculator *pCost = new PolygonCostCalculator( lp );

    // center
    //cost = feat->getDistInside((this->x[0] + this->x[2])/2.0, (this->y[0] + this->y[2])/2.0 );

    pCost->update( lp->feature );

    PointSet *extent = new PointSet( 4, bbx, bby );

    pCost->update( extent );

    delete extent;

    lp->feature->getBoundingBox( amin, amax );

    obstacles->Search( amin, amax, LabelPosition::polygonObstacleCallback, pCost );

    lp->setCost( pCost->getCost() );

    delete pCost;
  }

Example #2

File: labelposition.cpp Project: tqhien/Quantum-GIS

bool LabelPosition::polygonObstacleCallback( PointSet *feat, void *ctx )
{
    PolygonCostCalculator *pCost = ( PolygonCostCalculator* ) ctx;

    LabelPosition *lp = pCost->getLabel();
    if (( feat == lp->feature ) || ( feat->getHoleOf() && feat->getHoleOf() != lp->feature ) )
    {
        return true;
    }

    pCost->update( feat );

    return true;
}

Example #3

File: labelposition.cpp Project: ltbam/QGIS

  bool LabelPosition::polygonObstacleCallback( FeaturePart *obstacle, void *ctx )
  {
    PolygonCostCalculator *pCost = ( PolygonCostCalculator* ) ctx;

    LabelPosition *lp = pCost->getLabel();
    if (( obstacle == lp->feature ) || ( obstacle->getHoleOf() && obstacle->getHoleOf() != lp->feature ) )
    {
      return true;
    }

    pCost->update( obstacle );

    return true;
  }