QGIS API Documentation  3.23.0-Master (c716e02dd3)
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 "qgspolygon.h"
19 #include "qgsgeometryengine.h"
20 #include "qgsgeometrycheckerror.h"
21 
22 void QgsGeometryPointInPolygonCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &featurePools, QList<QgsGeometryCheckError *> &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids ) const
23 {
24  const QMap<QString, QgsFeatureIds> featureIds = ids.isEmpty() ? allLayerFeatureIds( featurePools ) : ids.toMap();
25  const QgsGeometryCheckerUtils::LayerFeatures layerFeatures( featurePools, featureIds, compatibleGeometryTypes(), feedback, mContext, true );
26  for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeature : layerFeatures )
27  {
28  const QgsAbstractGeometry *geom = layerFeature.geometry().constGet();
29  for ( int iPart = 0, nParts = geom->partCount(); iPart < nParts; ++iPart )
30  {
31  const QgsPoint *point = dynamic_cast<const QgsPoint *>( QgsGeometryCheckerUtils::getGeomPart( geom, iPart ) );
32  if ( !point )
33  {
34  // Should not happen
35  continue;
36  }
37  int nTested = 0;
38  int nInside = 0;
39 
40  // Check whether point is contained by a fully contained by a polygon
41  const QgsRectangle rect( point->x() - mContext->tolerance, point->y() - mContext->tolerance,
42  point->x() + mContext->tolerance, point->y() + mContext->tolerance );
43  const QgsGeometryCheckerUtils::LayerFeatures checkFeatures( featurePools, featureIds.keys(), rect, {QgsWkbTypes::PolygonGeometry}, mContext );
44  for ( const QgsGeometryCheckerUtils::LayerFeature &checkFeature : checkFeatures )
45  {
46  ++nTested;
47  const QgsAbstractGeometry *testGeom = checkFeature.geometry().constGet();
48  std::unique_ptr< QgsGeometryEngine > testGeomEngine = QgsGeometryCheckerUtils::createGeomEngine( testGeom, mContext->reducedTolerance );
49  if ( !testGeomEngine->isValid() )
50  {
51  messages.append( tr( "Point in polygon check failed for (%1): the geometry is invalid" ).arg( checkFeature.id() ) );
52  continue;
53  }
54  if ( testGeomEngine->contains( point ) && !testGeomEngine->touches( point ) )
55  {
56  ++nInside;
57  }
58  }
59  if ( nTested == 0 || nTested != nInside )
60  {
61  errors.append( new QgsGeometryCheckError( this, layerFeature, *point, QgsVertexId( iPart, 0, 0 ) ) );
62  }
63  }
64  }
65 }
66 
67 void QgsGeometryPointInPolygonCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes & /*changes*/ ) const
68 {
69  Q_UNUSED( featurePools )
70 
71  if ( method == NoChange )
72  {
73  error->setFixed( method );
74  }
75  else
76  {
77  error->setFixFailed( tr( "Unknown method" ) );
78  }
79 }
80 
82 {
83  static const QStringList methods = QStringList() << tr( "No action" );
84  return methods;
85 }
86 
88 {
90 }
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.
Q_DECL_DEPRECATED QStringList resolutionMethods() const override
Returns a list of descriptions for available resolutions for errors.
QList< QgsWkbTypes::GeometryType > compatibleGeometryTypes() const override
A list of geometry types for which this check can be performed.
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:49
Q_GADGET double x
Definition: qgspoint.h:52
double y
Definition: qgspoint.h:53
A rectangle specified with double values.
Definition: qgsrectangle.h:42
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