示例#1
0
bool QgsGeometryAreaCheck::mergeWithNeighbor( const QString &layerId, QgsFeature &feature, int partIdx, int method, int mergeAttributeIndex, Changes &changes, QString &errMsg ) const
{
  QgsFeaturePool *featurePool = mContext->featurePools[ layerId ];

  double maxVal = 0.;
  QgsFeature mergeFeature;
  int mergePartIdx = -1;
  bool matchFound = false;
  QgsGeometry featureGeometry = feature.geometry();
  const QgsAbstractGeometry *geom = featureGeometry.constGet();

  // Search for touching neighboring geometries
  const QgsFeatureIds intersects = featurePool->getIntersects( featureGeometry.boundingBox() );
  for ( QgsFeatureId testId : intersects )
  {
    QgsFeature testFeature;
    if ( !featurePool->get( testId, testFeature ) )
    {
      continue;
    }
    QgsGeometry testFeatureGeom = testFeature.geometry();
    const QgsAbstractGeometry *testGeom = testFeatureGeom.constGet();
    for ( int testPartIdx = 0, nTestParts = testGeom->partCount(); testPartIdx < nTestParts; ++testPartIdx )
    {
      if ( testId == feature.id() && testPartIdx == partIdx )
      {
        continue;
      }
      double len = QgsGeometryCheckerUtils::sharedEdgeLength( QgsGeometryCheckerUtils::getGeomPart( geom, partIdx ), QgsGeometryCheckerUtils::getGeomPart( testGeom, testPartIdx ), mContext->reducedTolerance );
      if ( len > 0. )
      {
        if ( method == MergeLongestEdge || method == MergeLargestArea )
        {
          double val;
          if ( method == MergeLongestEdge )
          {
            val = len;
          }
          else
          {
            if ( dynamic_cast<const QgsGeometryCollection *>( testGeom ) )
              val = static_cast<const QgsGeometryCollection *>( testGeom )->geometryN( testPartIdx )->area();
            else
              val = testGeom->area();
          }
          if ( val > maxVal )
          {
            maxVal = val;
            mergeFeature = testFeature;
            mergePartIdx = testPartIdx;
          }
        }
        else if ( method == MergeIdenticalAttribute )
        {
          if ( testFeature.attribute( mergeAttributeIndex ) == feature.attribute( mergeAttributeIndex ) )
          {
            mergeFeature = testFeature;
            mergePartIdx = testPartIdx;
            matchFound = true;
            break;
          }
        }
      }
    }
    if ( matchFound )
    {
      break;
    }
  }

  if ( !matchFound && maxVal == 0. )
  {
    return method == MergeIdenticalAttribute;
  }

  // Merge geometries
  QgsGeometry mergeFeatureGeom = mergeFeature.geometry();
  const QgsAbstractGeometry *mergeGeom = mergeFeatureGeom.constGet();
  std::unique_ptr<QgsGeometryEngine> geomEngine( QgsGeometryCheckerUtils::createGeomEngine( QgsGeometryCheckerUtils::getGeomPart( mergeGeom, mergePartIdx ), mContext->reducedTolerance ) );
  QgsAbstractGeometry *combinedGeom = geomEngine->combine( QgsGeometryCheckerUtils::getGeomPart( geom, partIdx ), &errMsg );
  if ( !combinedGeom || combinedGeom->isEmpty() || !QgsWkbTypes::isSingleType( combinedGeom->wkbType() ) )
  {
    return false;
  }

  // Replace polygon in merge geometry
  if ( mergeFeature.id() == feature.id() && mergePartIdx > partIdx )
  {
    --mergePartIdx;
  }
  replaceFeatureGeometryPart( layerId, mergeFeature, mergePartIdx, combinedGeom, changes );
  // Remove polygon from source geometry
  deleteFeatureGeometryPart( layerId, feature, partIdx, changes );

  return true;
}
示例#2
0
bool QgsGeometryChecker::fixError( QgsGeometryCheckError *error, int method, bool triggerRepaint )
{
  mMessages.clear();
  if ( error->status() >= QgsGeometryCheckError::StatusFixed )
  {
    return true;
  }
#if 0
  QTextStream( stdout ) << "Fixing " << error->description() << ": " << error->layerId() << ":" << error->featureId() << " @[" << error->vidx().part << ", " << error->vidx().ring << ", " << error->vidx().vertex << "](" << error->location().x() << ", " << error->location().y() << ") = " << error->value().toString() << endl;
#endif

  QgsGeometryCheck::Changes changes;
  QgsRectangle recheckArea = error->affectedAreaBBox();

  error->check()->fixError( error, method, mMergeAttributeIndices, changes );
#if 0
  QTextStream( stdout ) << " * Status: " << error->resolutionMessage() << endl;
  static QVector<QString> strChangeWhat = { "ChangeFeature", "ChangePart", "ChangeRing", "ChangeNode" };
  static QVector<QString> strChangeType = { "ChangeAdded", "ChangeRemoved", "ChangeChanged" };
  for ( const QString &layerId : changes.keys() )
  {
    for ( const QgsFeatureId &fid : changes[layerId].keys() )
    {
      for ( const QgsGeometryCheck::Change &change : changes[layerId][fid] )
      {
        QTextStream( stdout ) << " * Change: " << layerId << ":" << fid << " :: " << strChangeWhat[change.what] << ":" << strChangeType[change.type] << ":(" << change.vidx.part << "," << change.vidx.ring << "," << change.vidx.vertex << ")" << endl;
      }
    }
  }
#endif
  emit errorUpdated( error, true );
  if ( error->status() != QgsGeometryCheckError::StatusFixed )
  {
    return false;
  }

  // If nothing was changed, stop here
  if ( changes.isEmpty() )
  {
    return true;
  }

  // Determine what to recheck
  // - Collect all features which were changed, get affected area
  QMap<QString, QSet<QgsFeatureId>> recheckFeatures;
  for ( auto it = changes.constBegin(); it != changes.constEnd(); ++it )
  {
    const QMap<QgsFeatureId, QList<QgsGeometryCheck::Change>> &layerChanges = it.value();
    QgsFeaturePool *featurePool = mContext->featurePools[it.key()];
    QgsCoordinateTransform t( featurePool->getLayer()->crs(), mContext->mapCrs, QgsProject::instance() );
    for ( auto layerChangeIt = layerChanges.constBegin(); layerChangeIt != layerChanges.constEnd(); ++layerChangeIt )
    {
      bool removed = false;
      for ( const QgsGeometryCheck::Change &change : layerChangeIt.value() )
      {
        if ( change.what == QgsGeometryCheck::ChangeFeature && change.type == QgsGeometryCheck::ChangeRemoved )
        {
          removed = true;
          break;
        }
      }
      if ( !removed )
      {
        QgsFeature f;
        if ( featurePool->get( layerChangeIt.key(), f ) )
        {
          recheckFeatures[it.key()].insert( layerChangeIt.key() );
          recheckArea.combineExtentWith( t.transformBoundingBox( f.geometry().boundingBox() ) );
        }
      }
    }
  }
  // - Determine extent to recheck for gaps
  for ( QgsGeometryCheckError *err : qgis::as_const( mCheckErrors ) )
  {
    if ( err->check()->getCheckType() == QgsGeometryCheck::LayerCheck )
    {
      if ( err->affectedAreaBBox().intersects( recheckArea ) )
      {
        recheckArea.combineExtentWith( err->affectedAreaBBox() );
      }
    }
  }
  recheckArea.grow( 10 * mContext->tolerance );
  QMap<QString, QgsFeatureIds> recheckAreaFeatures;
  for ( const QString &layerId : mContext->featurePools.keys() )
  {
    QgsFeaturePool *featurePool = mContext->featurePools[layerId];
    QgsCoordinateTransform t( mContext->mapCrs, featurePool->getLayer()->crs(), QgsProject::instance() );
    recheckAreaFeatures[layerId] = featurePool->getIntersects( t.transform( recheckArea ) );
  }

  // Recheck feature / changed area to detect new errors
  QList<QgsGeometryCheckError *> recheckErrors;
  for ( const QgsGeometryCheck *check : qgis::as_const( mChecks ) )
  {
    if ( check->getCheckType() == QgsGeometryCheck::LayerCheck )
    {
      if ( !recheckAreaFeatures.isEmpty() )
      {
        check->collectErrors( recheckErrors, mMessages, nullptr, recheckAreaFeatures );
      }
    }
    else
    {
      if ( !recheckFeatures.isEmpty() )
      {
        check->collectErrors( recheckErrors, mMessages, nullptr, recheckFeatures );
      }
    }
  }

  // Go through error list, update other errors of the checked feature
  for ( QgsGeometryCheckError *err : qgis::as_const( mCheckErrors ) )
  {
    if ( err == error || err->status() == QgsGeometryCheckError::StatusObsolete )
    {
      continue;
    }

    QgsGeometryCheckError::Status oldStatus = err->status();

    bool handled = err->handleChanges( changes );

    // Check if this error now matches one found when rechecking the feature/area
    QgsGeometryCheckError *matchErr = nullptr;
    int nMatch = 0;
    for ( QgsGeometryCheckError *recheckErr : qgis::as_const( recheckErrors ) )
    {
      if ( recheckErr->isEqual( err ) || recheckErr->closeMatch( err ) )
      {
        ++nMatch;
        matchErr = recheckErr;
      }
    }
    // If just one close match was found, take it
    if ( nMatch == 1 && matchErr )
    {
      err->update( matchErr );
      emit errorUpdated( err, err->status() != oldStatus );
      recheckErrors.removeAll( matchErr );
      delete matchErr;
      continue;
    }

    // If no match is found and the error is not fixed or obsolete, set it to obsolete if...
    if ( err->status() < QgsGeometryCheckError::StatusFixed &&
         (
           // changes weren't handled
           !handled ||
           // or if it is a FeatureNodeCheck or FeatureCheck error whose feature was rechecked
           ( err->check()->getCheckType() <= QgsGeometryCheck::FeatureCheck && recheckFeatures[err->layerId()].contains( err->featureId() ) ) ||
           // or if it is a LayerCheck error within the rechecked area
           ( err->check()->getCheckType() == QgsGeometryCheck::LayerCheck && recheckArea.contains( err->affectedAreaBBox() ) )
         )
       )
    {
      err->setObsolete();
      emit errorUpdated( err, err->status() != oldStatus );
    }
  }

  // Add new errors
  for ( QgsGeometryCheckError *recheckErr : qgis::as_const( recheckErrors ) )
  {
    emit errorAdded( recheckErr );
    mCheckErrors.append( recheckErr );
  }

  if ( triggerRepaint )
  {
    for ( const QString &layerId : changes.keys() )
    {
      mContext->featurePools[layerId]->getLayer()->triggerRepaint();
    }
  }

  return true;
}