QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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qgsgeometrypointinpolygoncheck.cpp
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1/***************************************************************************
2 qgsgeometrypointinpolygoncheck.cpp
3 ---------------------
4 begin : June 2017
5 copyright : (C) 2017 by Sandro Mani / Sourcepole AG
6 email : smani at sourcepole dot ch
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
18#include "qgsgeometryengine.h"
20
21void QgsGeometryPointInPolygonCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &featurePools, QList<QgsGeometryCheckError *> &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids ) const
22{
23 const QMap<QString, QgsFeatureIds> featureIds = ids.isEmpty() ? allLayerFeatureIds( featurePools ) : ids.toMap();
24 const QgsGeometryCheckerUtils::LayerFeatures layerFeatures( featurePools, featureIds, compatibleGeometryTypes(), feedback, mContext, true );
25 for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeature : layerFeatures )
26 {
27 const QgsAbstractGeometry *geom = layerFeature.geometry().constGet();
28 for ( int iPart = 0, nParts = geom->partCount(); iPart < nParts; ++iPart )
29 {
30 const QgsPoint *point = dynamic_cast<const QgsPoint *>( QgsGeometryCheckerUtils::getGeomPart( geom, iPart ) );
31 if ( !point )
32 {
33 // Should not happen
34 continue;
35 }
36 int nTested = 0;
37 int nInside = 0;
38
39 // Check whether point is contained by a fully contained by a polygon
40 const QgsRectangle rect( point->x() - mContext->tolerance, point->y() - mContext->tolerance,
41 point->x() + mContext->tolerance, point->y() + mContext->tolerance );
42 const QgsGeometryCheckerUtils::LayerFeatures checkFeatures( featurePools, featureIds.keys(), rect, {Qgis::GeometryType::Polygon}, mContext );
43 for ( const QgsGeometryCheckerUtils::LayerFeature &checkFeature : checkFeatures )
44 {
45 ++nTested;
46 const QgsAbstractGeometry *testGeom = checkFeature.geometry().constGet();
47 std::unique_ptr< QgsGeometryEngine > testGeomEngine = QgsGeometryCheckerUtils::createGeomEngine( testGeom, mContext->reducedTolerance );
48 if ( !testGeomEngine->isValid() )
49 {
50 messages.append( tr( "Point in polygon check failed for (%1): the geometry is invalid" ).arg( checkFeature.id() ) );
51 continue;
52 }
53 if ( testGeomEngine->contains( point ) && !testGeomEngine->touches( point ) )
54 {
55 ++nInside;
56 }
57 }
58 if ( nTested == 0 || nTested != nInside )
59 {
60 errors.append( new QgsGeometryCheckError( this, layerFeature, *point, QgsVertexId( iPart, 0, 0 ) ) );
61 }
62 }
63 }
64}
65
66void QgsGeometryPointInPolygonCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes & /*changes*/ ) const
67{
68 Q_UNUSED( featurePools )
69
70 if ( method == NoChange )
71 {
72 error->setFixed( method );
73 }
74 else
75 {
76 error->setFixFailed( tr( "Unknown method" ) );
77 }
78}
79
81{
82 static const QStringList methods = QStringList() << tr( "No action" );
83 return methods;
84}
85
Abstract base class for all geometries.
virtual int partCount() const =0
Returns count of parts contained in the geometry.
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition qgsfeedback.h:45
const double reducedTolerance
The tolerance to allow for in geometry checks.
const double tolerance
The tolerance to allow for in geometry checks.
This represents an error reported by a geometry check.
void setFixed(int method)
Set the status to fixed and specify the method that has been used to fix the error.
void setFixFailed(const QString &reason)
Set the error status to failed and specify the reason for failure.
QMap< QString, QMap< QgsFeatureId, QList< QgsGeometryCheck::Change > > > Changes
A collection of changes.
const QgsGeometryCheckContext * mContext
CheckType
The type of a check.
@ FeatureNodeCheck
The check controls individual nodes.
QMap< QString, QgsFeatureIds > allLayerFeatureIds(const QMap< QString, QgsFeaturePool * > &featurePools) const
Returns all layers and feature ids.
A layer feature combination to uniquely identify and access a feature in a set of layers.
Contains a set of layers and feature ids in those layers to pass to a geometry check.
static std::unique_ptr< QgsGeometryEngine > createGeomEngine(const QgsAbstractGeometry *geometry, double tolerance)
static QgsAbstractGeometry * getGeomPart(QgsAbstractGeometry *geom, int partIdx)
static QgsGeometryCheck::CheckType factoryCheckType()
void fixError(const QMap< QString, QgsFeaturePool * > &featurePools, QgsGeometryCheckError *error, int method, const QMap< QString, int > &mergeAttributeIndices, Changes &changes) const override
Fixes the error error with the specified method.
void collectErrors(const QMap< QString, QgsFeaturePool * > &featurePools, QList< QgsGeometryCheckError * > &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids=LayerFeatureIds()) const override
The main worker method.
QList< Qgis::GeometryType > compatibleGeometryTypes() const override
A list of geometry types for which this check can be performed.
Q_DECL_DEPRECATED QStringList resolutionMethods() const override
Returns a list of descriptions for available resolutions for errors.
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
double x
Definition qgspoint.h:52
double y
Definition qgspoint.h:53
A rectangle specified with double values.
A list of layers and feature ids for each of these layers.
QMap< QString, QgsFeatureIds > toMap() const
Utility class for identifying a unique vertex within a geometry.
Definition qgsvertexid.h:31