25QString QgsSplitWithLinesAlgorithm::name()
const
27 return QStringLiteral(
"splitwithlines" );
30QString QgsSplitWithLinesAlgorithm::displayName()
const
32 return QObject::tr(
"Split with lines" );
35QStringList QgsSplitWithLinesAlgorithm::tags()
const
37 return QObject::tr(
"split,cut,lines" ).split(
',' );
40QString QgsSplitWithLinesAlgorithm::group()
const
42 return QObject::tr(
"Vector overlay" );
45QString QgsSplitWithLinesAlgorithm::groupId()
const
47 return QStringLiteral(
"vectoroverlay" );
50void QgsSplitWithLinesAlgorithm::initAlgorithm(
const QVariantMap & )
59QString QgsSplitWithLinesAlgorithm::shortHelpString()
const
61 return QObject::tr(
"This algorithm splits the lines or polygons in one layer using the lines or polygon rings in another layer to define the breaking points. "
62 "Intersection between geometries in both layers are considered as split points." );
70QgsSplitWithLinesAlgorithm *QgsSplitWithLinesAlgorithm::createInstance()
const
72 return new QgsSplitWithLinesAlgorithm();
82bool QgsSplitWithLinesAlgorithm::supportInPlaceEdit(
const QgsMapLayer *l )
const
84 const QgsVectorLayer *layer = qobject_cast< const QgsVectorLayer * >( l );
96 std::unique_ptr< QgsFeatureSource > source( parameterAsSource( parameters, QStringLiteral(
"INPUT" ), context ) );
100 std::unique_ptr< QgsFeatureSource > linesSource( parameterAsSource( parameters, QStringLiteral(
"LINES" ), context ) );
104 bool sameLayer = parameters.value( QStringLiteral(
"INPUT" ) ) == parameters.value( QStringLiteral(
"LINES" ) );
107 std::unique_ptr< QgsFeatureSink > sink( parameterAsSink( parameters, QStringLiteral(
"OUTPUT" ), context, dest, source->fields(),
124 double step = source->featureCount() > 0 ? 100.0 / source->featureCount() : 1;
147 const QgsFeatureIds splitFeatureCandidates = qgis::listToSet( splitFeaturesIndex.intersects( originalGeometry.
boundingBox() ) );
148 if ( !splitFeatureCandidates.empty() )
150 QVector< QgsGeometry > splittingLines;
153 std::unique_ptr< QgsGeometryEngine > originalGeometryEngine;
155 for (
QgsFeatureId splitFeatureCandidateId : splitFeatureCandidates )
158 if ( sameLayer && inFeatureA.
id() == splitFeatureCandidateId )
161 const QgsGeometry splitFeatureCandidate = splitFeaturesIndex.geometry( splitFeatureCandidateId );
162 if ( !originalGeometryEngine )
165 originalGeometryEngine->prepareGeometry();
168 if ( originalGeometryEngine->intersects( splitFeatureCandidate.
constGet() ) )
172 splittingLines.append( splitGeomParts );
176 if ( !splittingLines.empty() )
178 for (
const QgsGeometry &splitGeom : std::as_const( splittingLines ) )
181 QVector< QgsGeometry > outGeoms;
185 splitGeomEngine->prepareGeometry();
186 while ( !inGeoms.empty() )
197 if ( splitGeomEngine->intersects( inGeom.
constGet() ) )
200 if ( splitterPList.empty() )
215 QVector< QgsGeometry > newGeometries;
229 outGeoms.append( inGeom );
233 outGeoms.append( inGeom );
234 outGeoms.append( newGeometries );
239 outGeoms.append( inGeom );
244 outGeoms.append( inGeom );
253 QVector< QgsGeometry > parts;
254 for (
const QgsGeometry &aGeom : std::as_const( inGeoms ) )
264 int numPoints = aGeom.constGet()->nCoordinates();
266 if ( numPoints <= 2 )
268 if ( numPoints == 2 )
269 passed = !
static_cast< const QgsCurve *
>( aGeom.constGet() )->isClosed();
276 parts.append( aGeom );
290 outputs.insert( QStringLiteral(
"OUTPUT" ), dest );
@ VectorPolygon
Vector polygon layers.
@ VectorLine
Vector line layers.
GeometryOperationResult
Success or failure of a geometry operation.
@ Success
Operation succeeded.
@ RegeneratesPrimaryKey
Algorithm always drops any existing primary keys or FID values and regenerates them in outputs.
QFlags< ProcessingAlgorithmFlag > ProcessingAlgorithmFlags
Flags indicating how and when an algorithm operates and should be exposed to users.
QFlags< ProcessingAlgorithmDocumentationFlag > ProcessingAlgorithmDocumentationFlags
Flags describing algorithm behavior for documentation purposes.
@ SupportsInPlaceEdits
Algorithm supports in-place editing.
virtual QgsCoordinateSequence coordinateSequence() const =0
Retrieves the sequence of geometries, rings and nodes.
Abstract base class for curved geometry type.
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
Fetch next feature and stores in f, returns true on success.
This class wraps a request for features to a vector layer (or directly its vector data provider).
QgsFeatureRequest & setDestinationCrs(const QgsCoordinateReferenceSystem &crs, const QgsCoordinateTransformContext &context)
Sets the destination crs for feature's geometries.
QgsFeatureRequest & setNoAttributes()
Set that no attributes will be fetched.
@ FastInsert
Use faster inserts, at the cost of updating the passed features to reflect changes made at the provid...
@ RegeneratePrimaryKey
This flag indicates, that a primary key field cannot be guaranteed to be unique and the sink should i...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
void setAttributes(const QgsAttributes &attrs)
Sets the feature's attributes.
bool hasGeometry() const
Returns true if the feature has an associated geometry.
void setGeometry(const QgsGeometry &geometry)
Set the feature's geometry.
bool isCanceled() const
Tells whether the operation has been canceled already.
void setProgress(double progress)
Sets the current progress for the feedback object.
A geometry is the spatial representation of a feature.
QgsGeometry convertToType(Qgis::GeometryType destType, bool destMultipart=false) const
Try to convert the geometry to the requested type.
QVector< QgsGeometry > asGeometryCollection() const
Returns contents of the geometry as a list of geometries.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
double hausdorffDistance(const QgsGeometry &geom) const
Returns the Hausdorff distance between this geometry and geom.
QgsRectangle boundingBox() const
Returns the bounding box of the geometry.
static QgsGeometryEngine * createGeometryEngine(const QgsAbstractGeometry *geometry, double precision=0.0)
Creates and returns a new geometry engine representing the specified geometry using precision on a gr...
Q_DECL_DEPRECATED Qgis::GeometryOperationResult splitGeometry(const QVector< QgsPointXY > &splitLine, QVector< QgsGeometry > &newGeometries, bool topological, QVector< QgsPointXY > &topologyTestPoints, bool splitFeature=true)
Splits this geometry according to a given line.
Base class for all map layer types.
Point geometry type, with support for z-dimension and m-values.
virtual Qgis::ProcessingAlgorithmFlags flags() const
Returns the flags indicating how and when the algorithm operates and should be exposed to users.
Contains information about the context in which a processing algorithm is executed.
QgsCoordinateTransformContext transformContext() const
Returns the coordinate transform context.
Custom exception class for processing related exceptions.
Base class for providing feedback from a processing algorithm.
A feature sink output for processing algorithms.
An input feature source (such as vector layers) parameter for processing algorithms.
A spatial index for QgsFeature objects.
@ FlagStoreFeatureGeometries
Indicates that the spatial index should also store feature geometries. This requires more memory,...
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE Qgis::GeometryType geometryType() const
Returns point, line or polygon.
static Qgis::GeometryType geometryType(Qgis::WkbType type)
Returns the geometry type for a WKB type, e.g., both MultiPolygon and CurvePolygon would have a Polyg...
static Qgis::WkbType multiType(Qgis::WkbType type)
Returns the multi type for a WKB type.
QVector< QgsRingSequence > QgsCoordinateSequence
QVector< QgsPointSequence > QgsRingSequence
QVector< QgsPoint > QgsPointSequence
QSet< QgsFeatureId > QgsFeatureIds
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features