QGIS API Documentation  3.27.0-Master (e113457133)
qgsgeometrypointcoveredbylinecheck.cpp
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1 /***************************************************************************
2  qgsgeometrypointcoveredbylinecheck.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 "qgslinestring.h"
19 #include "qgsfeaturepool.h"
20 #include "qgsgeometrycheckerror.h"
21 
22 void QgsGeometryPointCoveredByLineCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &featurePools, QList<QgsGeometryCheckError *> &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids ) const
23 {
24  Q_UNUSED( messages )
25 
26  const QMap<QString, QgsFeatureIds> featureIds = ids.isEmpty() ? allLayerFeatureIds( featurePools ) : ids.toMap();
27  const QgsGeometryCheckerUtils::LayerFeatures layerFeatures( featurePools, featureIds, compatibleGeometryTypes(), feedback, mContext, true );
28  for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeature : layerFeatures )
29  {
30  const QgsAbstractGeometry *geom = layerFeature.geometry().constGet();
31  for ( int iPart = 0, nParts = geom->partCount(); iPart < nParts; ++iPart )
32  {
33  const QgsPoint *point = dynamic_cast<const QgsPoint *>( QgsGeometryCheckerUtils::getGeomPart( geom, iPart ) );
34  if ( !point )
35  {
36  // Should not happen
37  continue;
38  }
39  // Check that point lies on a line
40  bool touches = false;
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::LineGeometry}, mContext );
44  for ( const QgsGeometryCheckerUtils::LayerFeature &checkFeature : checkFeatures )
45  {
46  const QgsAbstractGeometry *testGeom = checkFeature.geometry().constGet();
47  for ( int jPart = 0, mParts = testGeom->partCount(); jPart < mParts; ++jPart )
48  {
49  const QgsLineString *testLine = dynamic_cast<const QgsLineString *>( QgsGeometryCheckerUtils::getGeomPart( testGeom, jPart ) );
50  if ( !testLine )
51  {
52  continue;
53  }
54  if ( QgsGeometryCheckerUtils::pointOnLine( *point, testLine, mContext->tolerance ) )
55  {
56  touches = true;
57  break;
58  }
59  }
60  if ( touches )
61  {
62  break;
63  }
64  }
65  if ( touches )
66  {
67  continue;
68  }
69  errors.append( new QgsGeometryCheckError( this, layerFeature, *point, QgsVertexId( iPart, 0, 0 ) ) );
70  }
71  }
72 }
73 
74 void QgsGeometryPointCoveredByLineCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes & /*changes*/ ) const
75 {
76  Q_UNUSED( featurePools )
77 
78  if ( method == NoChange )
79  {
80  error->setFixed( method );
81  }
82  else
83  {
84  error->setFixFailed( tr( "Unknown method" ) );
85  }
86 }
87 
89 {
90  static const QStringList methods = QStringList() << tr( "No action" );
91  return methods;
92 }
93 
95 {
97 }
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 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 QgsAbstractGeometry * getGeomPart(QgsAbstractGeometry *geom, int partIdx)
static bool pointOnLine(const QgsPoint &p, const QgsLineString *line, double tol, bool excludeExtremities=false)
QList< QgsWkbTypes::GeometryType > compatibleGeometryTypes() const override
A list of geometry types for which this check can be performed.
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.
static QgsGeometryCheck::CheckType factoryCheckType()
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.
Line string geometry type, with support for z-dimension and m-values.
Definition: qgslinestring.h:45
void append(const QgsLineString *line)
Appends the contents of another line string to the end of this line string.
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