24QString QgsFilterVerticesAlgorithmBase::group()
const
26 return QObject::tr(
"Vector geometry" );
29QString QgsFilterVerticesAlgorithmBase::groupId()
const
31 return QStringLiteral(
"vectorgeometry" );
34QString QgsFilterVerticesAlgorithmBase::outputName()
const
36 return QObject::tr(
"Filtered" );
39QString QgsFilterVerticesAlgorithmBase::shortHelpString()
const
41 return QObject::tr(
"Filters away vertices based on their %1, returning geometries with only "
42 "vertex points that have a %1 ≥ the specified minimum value and ≤ "
43 "the maximum value.\n\n"
44 "If the minimum value is not specified then only the maximum value is tested, "
45 "and similarly if the maximum value is not specified then only the minimum value is tested.\n\n"
46 "Depending on the input geometry attributes and the filters used, "
47 "the resultant geometries created by this algorithm may no longer be valid." ).arg( componentString() );
50QList<int> QgsFilterVerticesAlgorithmBase::inputLayerTypes()
const
55void QgsFilterVerticesAlgorithmBase::initParameters(
const QVariantMap & )
57 auto min = std::make_unique< QgsProcessingParameterNumber >( QStringLiteral(
"MIN" ),
59 min->setIsDynamic(
true );
61 min->setDynamicLayerParameterName( QStringLiteral(
"INPUT" ) );
62 addParameter( min.release() );
64 auto max = std::make_unique< QgsProcessingParameterNumber >( QStringLiteral(
"MAX" ),
66 max->setIsDynamic(
true );
68 max->setDynamicLayerParameterName( QStringLiteral(
"INPUT" ) );
69 addParameter( max.release() );
74 if ( parameters.contains( QStringLiteral(
"MIN" ) ) && parameters.value( QStringLiteral(
"MIN" ) ).isValid() )
75 mMin = parameterAsDouble( parameters, QStringLiteral(
"MIN" ), context );
77 mMin = std::numeric_limits<double>::quiet_NaN();
81 mMinProperty = parameters.value( QStringLiteral(
"MIN" ) ).value<
QgsProperty >();
83 if ( parameters.contains( QStringLiteral(
"MAX" ) ) && parameters.value( QStringLiteral(
"MAX" ) ).isValid() )
84 mMax = parameterAsDouble( parameters, QStringLiteral(
"MAX" ), context );
86 mMax = std::numeric_limits<double>::quiet_NaN();
90 mMaxProperty = parameters.value( QStringLiteral(
"MAX" ) ).value<
QgsProperty >();
103 min = mMinProperty.valueAsDouble( context.
expressionContext(), std::numeric_limits<double>::quiet_NaN() );
107 max = mMaxProperty.valueAsDouble( context.
expressionContext(), std::numeric_limits<double>::quiet_NaN() );
109 filter( geometry, min, max );
119QString QgsFilterVerticesByM::name()
const
121 return QStringLiteral(
"filterverticesbym" );
124QString QgsFilterVerticesByM::displayName()
const
126 return QObject::tr(
"Filter vertices by M value" );
129QStringList QgsFilterVerticesByM::tags()
const
131 return QObject::tr(
"filter,points,vertex,m" ).split(
',' );
134QgsFilterVerticesByM *QgsFilterVerticesByM::createInstance()
const
136 return new QgsFilterVerticesByM();
139bool QgsFilterVerticesByM::supportInPlaceEdit(
const QgsMapLayer *l )
const
141 const QgsVectorLayer *layer = qobject_cast< const QgsVectorLayer * >( l );
145 if ( ! QgsFilterVerticesAlgorithmBase::supportInPlaceEdit( layer ) )
150QString QgsFilterVerticesByM::componentString()
const
152 return QObject::tr(
"m-value" );
155void QgsFilterVerticesByM::filter(
QgsGeometry &geometry,
double min,
double max )
const
159 return ( std::isnan( min ) || point.
m() >= min )
160 && ( std::isnan( max ) || point.
m() <= max );
169QString QgsFilterVerticesByZ::name()
const
171 return QStringLiteral(
"filterverticesbyz" );
174QString QgsFilterVerticesByZ::displayName()
const
176 return QObject::tr(
"Filter vertices by Z value" );
179QStringList QgsFilterVerticesByZ::tags()
const
181 return QObject::tr(
"filter,points,vertex,z" ).split(
',' );
184QgsFilterVerticesByZ *QgsFilterVerticesByZ::createInstance()
const
186 return new QgsFilterVerticesByZ();
189bool QgsFilterVerticesByZ::supportInPlaceEdit(
const QgsMapLayer *l )
const
191 const QgsVectorLayer *layer = qobject_cast< const QgsVectorLayer * >( l );
195 if ( ! QgsFilterVerticesAlgorithmBase::supportInPlaceEdit( layer ) )
200QString QgsFilterVerticesByZ::componentString()
const
202 return QObject::tr(
"z-value" );
205void QgsFilterVerticesByZ::filter(
QgsGeometry &geometry,
double min,
double max )
const
209 return ( std::isnan( min ) || point.
z() >= min )
210 && ( std::isnan( max ) || point.
z() <= max );
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
bool hasGeometry() const
Returns true if the feature has an associated geometry.
void setGeometry(const QgsGeometry &geometry)
Set the feature's geometry.
A geometry is the spatial representation of a feature.
void filterVertices(const std::function< bool(const QgsPoint &) > &filter)
Filters the vertices from the geometry in place, removing any which do not return true for the filter...
Base class for all map layer types.
Point geometry type, with support for z-dimension and m-values.
Contains information about the context in which a processing algorithm is executed.
QgsExpressionContext & expressionContext()
Returns the expression context.
Base class for providing feedback from a processing algorithm.
@ Double
Double/float values.
static bool isDynamic(const QVariantMap ¶meters, const QString &name)
Returns true if the parameter with matching name is a dynamic parameter, and must be evaluated once f...
@ TypeVectorLine
Vector line layers.
@ TypeVectorPolygon
Vector polygon layers.
Definition for a property.
@ Double
Double value (including negative values)
A store for object properties.
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE Qgis::WkbType wkbType() const FINAL
Returns the WKBType or WKBUnknown in case of error.
static bool hasZ(Qgis::WkbType type)
Tests whether a WKB type contains the z-dimension.
static bool hasM(Qgis::WkbType type)
Tests whether a WKB type contains m values.
QList< QgsFeature > QgsFeatureList