QGIS API Documentation 3.27.0-Master (9c08adf5ef)
qgsgeometrylinelayerintersectioncheck.cpp
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1/***************************************************************************
2 qgsgeometrylinelayerintersectioncheck.cpp
3 ---------------------
4 begin : September 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 "qgslinestring.h"
20#include "qgsfeaturepool.h"
22
23void QgsGeometryLineLayerIntersectionCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &featurePools, QList<QgsGeometryCheckError *> &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids ) const
24{
25 Q_UNUSED( messages )
26
27 QMap<QString, QgsFeatureIds> featureIds = ids.isEmpty() ? allLayerFeatureIds( featurePools ) : ids.toMap();
28 featureIds.remove( mCheckLayer ); // Don't check layer against itself
29 const QgsGeometryCheckerUtils::LayerFeatures layerFeatures( featurePools, featureIds, compatibleGeometryTypes(), feedback, mContext, true );
30 for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeature : layerFeatures )
31 {
32 const QgsAbstractGeometry *geom = layerFeature.geometry().constGet();
33 for ( int iPart = 0, nParts = geom->partCount(); iPart < nParts; ++iPart )
34 {
35 const QgsLineString *line = dynamic_cast<const QgsLineString *>( QgsGeometryCheckerUtils::getGeomPart( geom, iPart ) );
36 if ( !line )
37 {
38 // Should not happen
39 continue;
40 }
41
42 // Check whether the line intersects with any other features of the specified layer
43 const QgsGeometryCheckerUtils::LayerFeatures checkFeatures( featurePools, QStringList() << mCheckLayer, line->boundingBox(), {QgsWkbTypes::LineGeometry, QgsWkbTypes::PolygonGeometry}, 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 QgsAbstractGeometry *part = QgsGeometryCheckerUtils::getGeomPart( testGeom, jPart );
50 if ( const QgsLineString *testLine = dynamic_cast<const QgsLineString *>( part ) )
51 {
52 const QList< QgsPoint > intersections = QgsGeometryCheckerUtils::lineIntersections( line, testLine, mContext->tolerance );
53 for ( const QgsPoint &inter : intersections )
54 {
55 errors.append( new QgsGeometryCheckError( this, layerFeature, inter, QgsVertexId( iPart ), checkFeature.id() ) );
56 }
57 }
58 else if ( const QgsPolygon *polygon = dynamic_cast<const QgsPolygon *>( part ) )
59 {
60 const QList< const QgsLineString * > rings = QgsGeometryCheckerUtils::polygonRings( polygon );
61 for ( const QgsLineString *ring : rings )
62 {
63 const QList< QgsPoint > intersections = QgsGeometryCheckerUtils::lineIntersections( line, ring, mContext->tolerance );
64 for ( const QgsPoint &inter : intersections )
65 {
66 errors.append( new QgsGeometryCheckError( this, layerFeature, inter, QgsVertexId( iPart ), checkFeature.id() ) );
67 }
68 }
69 }
70 }
71 }
72 }
73 }
74}
75
76void QgsGeometryLineLayerIntersectionCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes & /*changes*/ ) const
77{
78 Q_UNUSED( featurePools )
79
80 if ( method == NoChange )
81 {
82 error->setFixed( method );
83 }
84 else
85 {
86 error->setFixFailed( tr( "Unknown method" ) );
87 }
88}
89
91{
92 static const QStringList methods = QStringList() << tr( "No action" );
93 return methods;
94}
95
97{
99}
Abstract base class for all geometries.
virtual int partCount() const =0
Returns count of parts contained in the geometry.
QgsRectangle boundingBox() const override
Returns the minimal bounding box for the geometry.
Definition: qgscurve.cpp:238
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 QList< const QgsLineString * > polygonRings(const QgsPolygon *polygon)
static QgsAbstractGeometry * getGeomPart(QgsAbstractGeometry *geom, int partIdx)
static QList< QgsPoint > lineIntersections(const QgsLineString *line1, const QgsLineString *line2, double tol)
QList< QgsWkbTypes::GeometryType > compatibleGeometryTypes() const override
A list of geometry types for which this check can be performed.
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.
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.
Line string geometry type, with support for z-dimension and m-values.
Definition: qgslinestring.h:45
Point geometry type, with support for z-dimension and m-values.
Definition: qgspoint.h:49
Polygon geometry type.
Definition: qgspolygon.h:34
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