void QgsGeometryOverlapCheck::fixError( QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes &changes ) const
{
QString errMsg;
QgsGeometryOverlapCheckError *overlapError = static_cast<QgsGeometryOverlapCheckError *>( error );
QgsFeaturePool *featurePoolA = mContext->featurePools[ overlapError->layerId() ];
QgsFeaturePool *featurePoolB = mContext->featurePools[ overlapError->overlappedFeature().first ];
QgsFeature featureA;
QgsFeature featureB;
if ( !featurePoolA->get( overlapError->featureId(), featureA ) ||
!featurePoolB->get( overlapError->overlappedFeature().second, featureB ) )
{
error->setObsolete();
return;
}
// Check if error still applies
QgsGeometryCheckerUtils::LayerFeature layerFeatureA( featurePoolA, featureA, true );
QgsGeometryCheckerUtils::LayerFeature layerFeatureB( featurePoolB, featureB, true );
std::unique_ptr< QgsGeometryEngine > geomEngineA = QgsGeometryCheckerUtils::createGeomEngine( layerFeatureA.geometry(), mContext->reducedTolerance );
if ( !geomEngineA->overlaps( layerFeatureB.geometry() ) )
{
error->setObsolete();
return;
}
std::unique_ptr< QgsAbstractGeometry > interGeom( geomEngineA->intersection( layerFeatureB.geometry(), &errMsg ) );
if ( !interGeom )
{
error->setFixFailed( tr( "Failed to compute intersection between overlapping features: %1" ).arg( errMsg ) );
return;
}
// Search which overlap part this error parametrizes (using fuzzy-matching of the area and centroid...)
QgsAbstractGeometry *interPart = nullptr;
for ( int iPart = 0, nParts = interGeom->partCount(); iPart < nParts; ++iPart )
{
QgsAbstractGeometry *part = QgsGeometryCheckerUtils::getGeomPart( interGeom.get(), iPart );
if ( std::fabs( part->area() - overlapError->value().toDouble() ) < mContext->reducedTolerance &&
QgsGeometryCheckerUtils::pointsFuzzyEqual( part->centroid(), overlapError->location(), mContext->reducedTolerance ) )
{
interPart = part;
break;
}
}
if ( !interPart || interPart->isEmpty() )
{
error->setObsolete();
return;
}
// Fix error
if ( method == NoChange )
{
error->setFixed( method );
}
else if ( method == Subtract )
{
std::unique_ptr< QgsAbstractGeometry > diff1( geomEngineA->difference( interPart, &errMsg ) );
if ( !diff1 || diff1->isEmpty() )
{
diff1.reset();
}
else
{
QgsGeometryCheckerUtils::filter1DTypes( diff1.get() );
}
std::unique_ptr< QgsGeometryEngine > geomEngineB = QgsGeometryCheckerUtils::createGeomEngine( layerFeatureB.geometry(), mContext->reducedTolerance );
std::unique_ptr< QgsAbstractGeometry > diff2( geomEngineB->difference( interPart, &errMsg ) );
if ( !diff2 || diff2->isEmpty() )
{
diff2.reset();
}
else
{
QgsGeometryCheckerUtils::filter1DTypes( diff2.get() );
}
double shared1 = diff1 ? QgsGeometryCheckerUtils::sharedEdgeLength( diff1.get(), interPart, mContext->reducedTolerance ) : 0;
double shared2 = diff2 ? QgsGeometryCheckerUtils::sharedEdgeLength( diff2.get(), interPart, mContext->reducedTolerance ) : 0;
if ( !diff1 || !diff2 || shared1 == 0. || shared2 == 0. )
{
error->setFixFailed( tr( "Could not find shared edges between intersection and overlapping features" ) );
}
else
{
if ( shared1 < shared2 )
{
diff1->transform( featurePoolA->getLayerToMapTransform(), QgsCoordinateTransform::ReverseTransform );
featureA.setGeometry( QgsGeometry( std::move( diff1 ) ) );
changes[error->layerId()][featureA.id()].append( Change( ChangeFeature, ChangeChanged ) );
featurePoolA->updateFeature( featureA );
}
else
{
diff2->transform( featurePoolB->getLayerToMapTransform(), QgsCoordinateTransform::ReverseTransform );
featureB.setGeometry( QgsGeometry( std::move( diff2 ) ) );
changes[overlapError->overlappedFeature().first][featureB.id()].append( Change( ChangeFeature, ChangeChanged ) );
featurePoolB->updateFeature( featureB );
}
error->setFixed( method );
}
}
else
{
error->setFixFailed( tr( "Unknown method" ) );
}
}
bool QgsGeometryGapCheck::mergeWithNeighbor( QgsGeometryGapCheckError *err, Changes &changes, QString &errMsg ) const
{
double maxVal = 0.;
QString mergeLayerId;
QgsFeature mergeFeature;
int mergePartIdx = -1;
const QgsAbstractGeometry *errGeometry = QgsGeometryCheckerUtils::getGeomPart( err->geometry(), 0 );
// Search for touching neighboring geometries
for ( const QString &layerId : err->neighbors().keys() )
{
QgsFeaturePool *featurePool = mContext->featurePools[ layerId ];
QgsAbstractGeometry *errLayerGeom = errGeometry->clone();
errLayerGeom->transform( featurePool->getLayerToMapTransform(), QgsCoordinateTransform::ReverseTransform );
for ( QgsFeatureId testId : err->neighbors()[layerId] )
{
QgsFeature testFeature;
if ( !featurePool->get( testId, testFeature ) )
{
continue;
}
QgsGeometry featureGeom = testFeature.geometry();
const QgsAbstractGeometry *testGeom = featureGeom.constGet();
for ( int iPart = 0, nParts = testGeom->partCount(); iPart < nParts; ++iPart )
{
double len = QgsGeometryCheckerUtils::sharedEdgeLength( errLayerGeom, QgsGeometryCheckerUtils::getGeomPart( testGeom, iPart ), mContext->reducedTolerance );
if ( len > maxVal )
{
maxVal = len;
mergeFeature = testFeature;
mergePartIdx = iPart;
mergeLayerId = layerId;
}
}
}
delete errLayerGeom;
}
if ( maxVal == 0. )
{
return false;
}
// Merge geometries
QgsFeaturePool *featurePool = mContext->featurePools[ mergeLayerId ];
QgsAbstractGeometry *errLayerGeom = errGeometry->clone();
errLayerGeom->transform( featurePool->getLayerToMapTransform(), QgsCoordinateTransform::ReverseTransform );
QgsGeometry mergeFeatureGeom = mergeFeature.geometry();
const QgsAbstractGeometry *mergeGeom = mergeFeatureGeom.constGet();
std::unique_ptr< QgsGeometryEngine > geomEngine = QgsGeometryCheckerUtils::createGeomEngine( errLayerGeom, mContext->reducedTolerance );
QgsAbstractGeometry *combinedGeom = geomEngine->combine( QgsGeometryCheckerUtils::getGeomPart( mergeGeom, mergePartIdx ), &errMsg );
delete errLayerGeom;
if ( !combinedGeom || combinedGeom->isEmpty() || !QgsWkbTypes::isSingleType( combinedGeom->wkbType() ) )
{
delete combinedGeom;
return false;
}
// Add merged polygon to destination geometry
replaceFeatureGeometryPart( mergeLayerId, mergeFeature, mergePartIdx, combinedGeom, changes );
return true;
}