コード例 #1
0
ファイル: qgsgpxfeatureiterator.cpp プロジェクト: CS-SI/QGIS
bool QgsGPXFeatureIterator::readRoute( const QgsRoute &rte, QgsFeature &feature )
{
  if ( rte.points.isEmpty() )
    return false;

  QgsGeometry *geometry = readRouteGeometry( rte );

  if ( !mFilterRect.isNull() )
  {
    if ( ( rte.xMax < mFilterRect.xMinimum() ) || ( rte.xMin > mFilterRect.xMaximum() ) ||
         ( rte.yMax < mFilterRect.yMinimum() ) || ( rte.yMin > mFilterRect.yMaximum() ) )
    {
      delete geometry;
      return false;
    }

    if ( !geometry->intersects( mFilterRect ) ) //use geos for precise intersection test
    {
      delete geometry;
      return false;
    }
  }

  if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
  {
    feature.setGeometry( *geometry );
    delete geometry;
  }
  else
  {
    delete geometry;
  }
  feature.setId( rte.id );
  feature.setValid( true );
  feature.setFields( mSource->mFields ); // allow name-based attribute lookups
  feature.initAttributes( mSource->mFields.count() );

  readAttributes( feature, rte );

  return true;
}
コード例 #2
0
bool QgsGPXFeatureIterator::readRoute( const QgsRoute& rte, QgsFeature& feature )
{
  if ( rte.points.size() == 0 )
    return false;

  QgsGeometry* theGeometry = readRouteGeometry( rte );

  if ( mRequest.filterType() == QgsFeatureRequest::FilterRect )
  {
    const QgsRectangle& rect = mRequest.filterRect();
    if (( rte.xMax < rect.xMinimum() ) || ( rte.xMin > rect.xMaximum() ) ||
        ( rte.yMax < rect.yMinimum() ) || ( rte.yMin > rect.yMaximum() ) )
      return false;

    if ( !theGeometry->intersects( rect ) ) //use geos for precise intersection test
    {
      delete theGeometry;
      return false;
    }
  }

  if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
  {
    feature.setGeometry( theGeometry );
  }
  else
  {
    delete theGeometry;
  }
  feature.setFeatureId( rte.id );
  feature.setValid( true );
  feature.setFields( &mSource->mFields ); // allow name-based attribute lookups
  feature.initAttributes( mSource->mFields.count() );

  readAttributes( feature, rte );

  return true;
}