mirror of
https://github.com/qgis/QGIS.git
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Processing: Add Check Geometry algorithm and test: Self intersection
This commit is contained in:
Jacky Volpes
parent
de98779ebb
commit
13b5b37c27
@ -69,6 +69,7 @@ set(QGIS_ANALYSIS_SRCS
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processing/qgsalgorithmfixgeometrymissingvertex.cpp
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processing/qgsalgorithmfixgeometrymissingvertex.cpp
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processing/qgsalgorithmcheckgeometryarea.cpp
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processing/qgsalgorithmcheckgeometryarea.cpp
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processing/qgsalgorithmfixgeometryarea.cpp
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processing/qgsalgorithmfixgeometryarea.cpp
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processing/qgsalgorithmcheckgeometryselfintersection.cpp
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processing/qgsalgorithmclip.cpp
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processing/qgsalgorithmclip.cpp
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processing/qgsalgorithmconcavehull.cpp
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processing/qgsalgorithmconcavehull.cpp
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processing/qgsalgorithmconditionalbranch.cpp
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processing/qgsalgorithmconditionalbranch.cpp
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@ -0,0 +1,237 @@
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/***************************************************************************
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qgsalgorithmcheckgeometryselfintersection.cpp
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---------------------
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begin : April 2025
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copyright : (C) 2025 by Jacky Volpes
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email : jacky dot volpes at oslandia dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgsalgorithmcheckgeometryselfintersection.h"
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#include "qgsgeometrycheckcontext.h"
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#include "qgsgeometrycheckerror.h"
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#include "qgsgeometryselfintersectioncheck.h"
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#include "qgspoint.h"
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#include "qgsvectorlayer.h"
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#include "qgsvectordataproviderfeaturepool.h"
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///@cond PRIVATE
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QString QgsGeometryCheckSelfIntersectionAlgorithm::name() const
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{
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return QStringLiteral( "checkgeometryselfintersection" );
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}
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QString QgsGeometryCheckSelfIntersectionAlgorithm::displayName() const
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{
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return QObject::tr( "Check Geometry (Self intersection)" );
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}
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QStringList QgsGeometryCheckSelfIntersectionAlgorithm::tags() const
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{
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return QObject::tr( "check,geometry,intersection" ).split( ',' );
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}
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QString QgsGeometryCheckSelfIntersectionAlgorithm::group() const
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{
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return QObject::tr( "Check geometry" );
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}
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QString QgsGeometryCheckSelfIntersectionAlgorithm::groupId() const
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{
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return QStringLiteral( "checkgeometry" );
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}
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QString QgsGeometryCheckSelfIntersectionAlgorithm::shortHelpString() const
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{
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return QObject::tr( "This algorithm checks self-intersecting geometries.\n"
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"Self-intersecting geometries are errors." );
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}
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Qgis::ProcessingAlgorithmFlags QgsGeometryCheckSelfIntersectionAlgorithm::flags() const
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{
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return QgsProcessingAlgorithm::flags() | Qgis::ProcessingAlgorithmFlag::NoThreading;
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}
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QgsGeometryCheckSelfIntersectionAlgorithm *QgsGeometryCheckSelfIntersectionAlgorithm::createInstance() const
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{
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return new QgsGeometryCheckSelfIntersectionAlgorithm();
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}
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void QgsGeometryCheckSelfIntersectionAlgorithm::initAlgorithm( const QVariantMap &configuration )
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{
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Q_UNUSED( configuration )
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addParameter( new QgsProcessingParameterFeatureSource(
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QStringLiteral( "INPUT" ), QObject::tr( "Input layer" ),
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QList<int>()
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<< static_cast<int>( Qgis::ProcessingSourceType::VectorPolygon )
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<< static_cast<int>( Qgis::ProcessingSourceType::VectorLine )
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) );
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addParameter( new QgsProcessingParameterField(
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QStringLiteral( "UNIQUE_ID" ), QObject::tr( "Unique feature identifier" ), QString(), QStringLiteral( "INPUT" )
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) );
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addParameter( new QgsProcessingParameterFeatureSink(
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QStringLiteral( "ERRORS" ), QObject::tr( "Errors layer" ), Qgis::ProcessingSourceType::VectorPoint
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) );
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addParameter( new QgsProcessingParameterFeatureSink(
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QStringLiteral( "OUTPUT" ), QObject::tr( "Output layer" ), Qgis::ProcessingSourceType::VectorAnyGeometry
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) );
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std::unique_ptr<QgsProcessingParameterNumber> tolerance = std::make_unique<QgsProcessingParameterNumber>(
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QStringLiteral( "TOLERANCE" ), QObject::tr( "Tolerance" ), Qgis::ProcessingNumberParameterType::Integer, 8, false, 1, 13
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);
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tolerance->setFlags( tolerance->flags() | Qgis::ProcessingParameterFlag::Advanced );
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addParameter( tolerance.release() );
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}
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bool QgsGeometryCheckSelfIntersectionAlgorithm::prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback * )
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{
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mTolerance = parameterAsInt( parameters, QStringLiteral( "TOLERANCE" ), context );
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return true;
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}
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QgsFields QgsGeometryCheckSelfIntersectionAlgorithm::outputFields()
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{
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QgsFields fields;
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fields.append( QgsField( QStringLiteral( "gc_layerid" ), QMetaType::QString ) );
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fields.append( QgsField( QStringLiteral( "gc_layername" ), QMetaType::QString ) );
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fields.append( QgsField( QStringLiteral( "gc_partidx" ), QMetaType::Int ) );
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fields.append( QgsField( QStringLiteral( "gc_ringidx" ), QMetaType::Int ) );
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fields.append( QgsField( QStringLiteral( "gc_vertidx" ), QMetaType::Int ) );
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fields.append( QgsField( QStringLiteral( "gc_errorx" ), QMetaType::Double ) );
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fields.append( QgsField( QStringLiteral( "gc_errory" ), QMetaType::Double ) );
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fields.append( QgsField( QStringLiteral( "gc_error" ), QMetaType::QString ) );
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fields.append( QgsField( QStringLiteral( "gc_segment_1" ), QMetaType::Int ) );
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fields.append( QgsField( QStringLiteral( "gc_segment_2" ), QMetaType::Int ) );
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return fields;
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}
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QVariantMap QgsGeometryCheckSelfIntersectionAlgorithm::processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback )
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{
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QString dest_output;
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QString dest_errors;
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const std::unique_ptr<QgsProcessingFeatureSource> input( parameterAsSource( parameters, QStringLiteral( "INPUT" ), context ) );
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if ( !input )
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throw QgsProcessingException( invalidSourceError( parameters, QStringLiteral( "INPUT" ) ) );
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const QString uniqueIdFieldName( parameterAsString( parameters, QStringLiteral( "UNIQUE_ID" ), context ) );
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const int uniqueIdFieldIdx = input->fields().indexFromName( uniqueIdFieldName );
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if ( uniqueIdFieldIdx == -1 )
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throw QgsProcessingException( QObject::tr( "Missing field %1 in input layer" ).arg( uniqueIdFieldName ) );
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const QgsField uniqueIdField = input->fields().at( uniqueIdFieldIdx );
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QgsFields fields = outputFields();
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fields.append( uniqueIdField );
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const std::unique_ptr<QgsFeatureSink> sink_output( parameterAsSink(
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parameters, QStringLiteral( "OUTPUT" ), context, dest_output, fields, input->wkbType(), input->sourceCrs()
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) );
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if ( !sink_output )
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throw QgsProcessingException( invalidSinkError( parameters, QStringLiteral( "OUTPUT" ) ) );
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const std::unique_ptr<QgsFeatureSink> sink_errors( parameterAsSink(
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parameters, QStringLiteral( "ERRORS" ), context, dest_errors, fields, Qgis::WkbType::Point, input->sourceCrs()
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) );
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if ( !sink_errors )
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throw QgsProcessingException( invalidSinkError( parameters, QStringLiteral( "ERRORS" ) ) );
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QgsProcessingMultiStepFeedback multiStepFeedback( 3, feedback );
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const QgsProject *project = QgsProject::instance();
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QgsGeometryCheckContext checkContext = QgsGeometryCheckContext( mTolerance, input->sourceCrs(), project->transformContext(), project );
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// Test detection
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QList<QgsGeometryCheckError *> checkErrors;
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QStringList messages;
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const QgsGeometrySelfIntersectionCheck check( &checkContext, QVariantMap() );
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multiStepFeedback.setCurrentStep( 1 );
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feedback->setProgressText( QObject::tr( "Preparing features…" ) );
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QMap<QString, QgsFeaturePool *> featurePools;
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std::unique_ptr<QgsVectorLayer> inputLayer( input->materialize( QgsFeatureRequest() ) );
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QgsVectorDataProviderFeaturePool featurePool = QgsVectorDataProviderFeaturePool( inputLayer.get() );
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featurePools.insert( inputLayer->id(), &featurePool );
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multiStepFeedback.setCurrentStep( 2 );
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feedback->setProgressText( QObject::tr( "Collecting errors…" ) );
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check.collectErrors( featurePools, checkErrors, messages, feedback );
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multiStepFeedback.setCurrentStep( 3 );
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feedback->setProgressText( QObject::tr( "Exporting errors…" ) );
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const double step { checkErrors.size() > 0 ? 100.0 / checkErrors.size() : 1 };
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long i = 0;
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feedback->setProgress( 0.0 );
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for ( QgsGeometryCheckError *error : checkErrors )
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{
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const QgsGeometryCheckErrorSingle *singleError = dynamic_cast<const QgsGeometryCheckErrorSingle *>( error );
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if ( !singleError )
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break;
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const QgsGeometrySelfIntersectionCheckError *selfIntersectionError = dynamic_cast<const QgsGeometrySelfIntersectionCheckError *>( singleError->singleError() );
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if ( !selfIntersectionError )
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break;
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const QgsGeometryUtils::SelfIntersection &intersection = selfIntersectionError->intersection();
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if ( feedback->isCanceled() )
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break;
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QgsFeature f;
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QgsAttributes attrs = f.attributes();
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attrs << error->layerId()
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<< inputLayer->name()
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<< error->vidx().part
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<< error->vidx().ring
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<< error->vidx().vertex
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<< error->location().x()
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<< error->location().y()
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<< error->value().toString()
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<< intersection.segment1
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<< intersection.segment2
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<< inputLayer->getFeature( error->featureId() ).attribute( uniqueIdField.name() );
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f.setAttributes( attrs );
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f.setGeometry( error->geometry() );
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if ( !sink_output->addFeature( f, QgsFeatureSink::FastInsert ) )
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throw QgsProcessingException( writeFeatureError( sink_output.get(), parameters, QStringLiteral( "OUTPUT" ) ) );
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f.setGeometry( QgsGeometry::fromPoint( QgsPoint( error->location().x(), error->location().y() ) ) );
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if ( !sink_errors->addFeature( f, QgsFeatureSink::FastInsert ) )
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throw QgsProcessingException( writeFeatureError( sink_errors.get(), parameters, QStringLiteral( "ERRORS" ) ) );
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i++;
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feedback->setProgress( 100.0 * step * static_cast<double>( i ) );
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}
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// Place the point layer above the other layer
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if ( context.willLoadLayerOnCompletion( dest_output ) && context.willLoadLayerOnCompletion( dest_errors ) )
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{
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context.layerToLoadOnCompletionDetails( dest_errors ).layerSortKey = 0;
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context.layerToLoadOnCompletionDetails( dest_output ).layerSortKey = 1;
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}
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QVariantMap outputs;
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outputs.insert( QStringLiteral( "OUTPUT" ), dest_output );
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outputs.insert( QStringLiteral( "ERRORS" ), dest_errors );
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return outputs;
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}
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///@endcond
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@ -0,0 +1,53 @@
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/***************************************************************************
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qgsalgorithmcheckgeometryselfintersection.h
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---------------------
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begin : April 2025
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copyright : (C) 2025 by Jacky Volpes
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email : jacky dot volpes at oslandia dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSALGORITHMCHECKGEOMETRYSELFINTERSECTION_H
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#define QGSALGORITHMCHECKGEOMETRYSELFINTERSECTION_H
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#define SIP_NO_FILE
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#include "qgis_sip.h"
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#include "qgsprocessingalgorithm.h"
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///@cond PRIVATE
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class QgsGeometryCheckSelfIntersectionAlgorithm : public QgsProcessingAlgorithm
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{
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public:
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QgsGeometryCheckSelfIntersectionAlgorithm() = default;
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void initAlgorithm( const QVariantMap &configuration = QVariantMap() ) override;
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QString name() const override;
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QString displayName() const override;
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QStringList tags() const override;
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QString group() const override;
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QString groupId() const override;
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QString shortHelpString() const override;
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Qgis::ProcessingAlgorithmFlags flags() const override;
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QgsGeometryCheckSelfIntersectionAlgorithm *createInstance() const override SIP_FACTORY;
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protected:
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bool prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
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QVariantMap processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
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private:
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static QgsFields outputFields();
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int mTolerance { 8 };
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};
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///@endcond PRIVATE
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#endif // QGSALGORITHMCHECKGEOMETRYSELFINTERSECTION_H
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@ -50,6 +50,7 @@
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#include "qgsalgorithmfixgeometrymissingvertex.h"
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#include "qgsalgorithmfixgeometrymissingvertex.h"
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#include "qgsalgorithmcheckgeometryhole.h"
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#include "qgsalgorithmcheckgeometryhole.h"
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#include "qgsalgorithmcheckgeometrymissingvertex.h"
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#include "qgsalgorithmcheckgeometrymissingvertex.h"
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#include "qgsalgorithmcheckgeometryselfintersection.h"
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#include "qgsalgorithmclip.h"
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#include "qgsalgorithmclip.h"
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#include "qgsalgorithmconcavehull.h"
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#include "qgsalgorithmconcavehull.h"
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#include "qgsalgorithmconditionalbranch.h"
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#include "qgsalgorithmconditionalbranch.h"
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@ -338,6 +339,7 @@ void QgsNativeAlgorithms::loadAlgorithms()
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addAlgorithm( new QgsGeometryCheckAreaAlgorithm() );
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addAlgorithm( new QgsGeometryCheckAreaAlgorithm() );
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addAlgorithm( new QgsGeometryCheckHoleAlgorithm() );
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addAlgorithm( new QgsGeometryCheckHoleAlgorithm() );
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addAlgorithm( new QgsGeometryCheckMissingVertexAlgorithm() );
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addAlgorithm( new QgsGeometryCheckMissingVertexAlgorithm() );
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addAlgorithm( new QgsGeometryCheckSelfIntersectionAlgorithm() );
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addAlgorithm( new QgsClipAlgorithm() );
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addAlgorithm( new QgsClipAlgorithm() );
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addAlgorithm( new QgsCollectAlgorithm() );
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addAlgorithm( new QgsCollectAlgorithm() );
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addAlgorithm( new QgsCombineStylesAlgorithm() );
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addAlgorithm( new QgsCombineStylesAlgorithm() );
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@ -37,6 +37,9 @@ class TestQgsProcessingCheckGeometry : public QgsTest
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void angleAlg_data();
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void angleAlg_data();
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void angleAlg();
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void angleAlg();
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void selfIntersectionAlg_data();
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void selfIntersectionAlg();
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void areaAlg();
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void areaAlg();
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void holeAlg();
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void holeAlg();
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void missingVertexAlg();
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void missingVertexAlg();
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@ -219,5 +222,44 @@ void TestQgsProcessingCheckGeometry::missingVertexAlg()
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QCOMPARE( errorsLayer->featureCount(), 5 );
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QCOMPARE( errorsLayer->featureCount(), 5 );
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}
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}
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void TestQgsProcessingCheckGeometry::selfIntersectionAlg_data()
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{
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QTest::addColumn<QgsVectorLayer *>( "layerToTest" );
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QTest::addColumn<int>( "expectedErrorCount" );
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QTest::newRow( "Line layer" ) << mLineLayer << 3;
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QTest::newRow( "Polygon layer" ) << mPolygonLayer << 2;
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}
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void TestQgsProcessingCheckGeometry::selfIntersectionAlg()
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{
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QFETCH( QgsVectorLayer *, layerToTest );
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QFETCH( int, expectedErrorCount );
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std::unique_ptr< QgsProcessingAlgorithm > alg(
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QgsApplication::processingRegistry()->createAlgorithmById( QStringLiteral( "native:checkgeometryselfintersection" ) )
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);
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QVERIFY( alg != nullptr );
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QVariantMap parameters;
|
||||||
|
parameters.insert( QStringLiteral( "INPUT" ), QVariant::fromValue( layerToTest ) );
|
||||||
|
parameters.insert( QStringLiteral( "UNIQUE_ID" ), "id" );
|
||||||
|
parameters.insert( QStringLiteral( "OUTPUT" ), QgsProcessing::TEMPORARY_OUTPUT );
|
||||||
|
parameters.insert( QStringLiteral( "ERRORS" ), QgsProcessing::TEMPORARY_OUTPUT );
|
||||||
|
|
||||||
|
bool ok = false;
|
||||||
|
QgsProcessingFeedback feedback;
|
||||||
|
std::unique_ptr< QgsProcessingContext > context = std::make_unique< QgsProcessingContext >();
|
||||||
|
|
||||||
|
QVariantMap results;
|
||||||
|
results = alg->run( parameters, *context, &feedback, &ok );
|
||||||
|
QVERIFY( ok );
|
||||||
|
|
||||||
|
std::unique_ptr<QgsVectorLayer> outputLayer( qobject_cast< QgsVectorLayer * >( context->getMapLayer( results.value( QStringLiteral( "OUTPUT" ) ).toString() ) ) );
|
||||||
|
std::unique_ptr<QgsVectorLayer> errorsLayer( qobject_cast< QgsVectorLayer * >( context->getMapLayer( results.value( QStringLiteral( "ERRORS" ) ).toString() ) ) );
|
||||||
|
QVERIFY( outputLayer->isValid() );
|
||||||
|
QVERIFY( errorsLayer->isValid() );
|
||||||
|
QCOMPARE( outputLayer->featureCount(), expectedErrorCount );
|
||||||
|
QCOMPARE( errorsLayer->featureCount(), expectedErrorCount );
|
||||||
|
}
|
||||||
|
|
||||||
QGSTEST_MAIN( TestQgsProcessingCheckGeometry )
|
QGSTEST_MAIN( TestQgsProcessingCheckGeometry )
|
||||||
#include "testqgsprocessingcheckgeometry.moc"
|
#include "testqgsprocessingcheckgeometry.moc"
|
||||||
|
|||||||
Loading…
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Reference in New Issue
Block a user