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." )
48 .arg( componentString() );
51QString QgsFilterVerticesAlgorithmBase::shortDescription()
const
53 return QObject::tr(
"Filters away vertices based on their %1 value." )
54 .arg( componentString() );
57void QgsFilterVerticesAlgorithmBase::initParameters(
const QVariantMap & )
60 min->setIsDynamic(
true );
62 min->setDynamicLayerParameterName( QStringLiteral(
"INPUT" ) );
63 addParameter( min.release() );
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
158 return ( std::isnan( min ) || point.
m() >= min )
159 && ( std::isnan( max ) || point.
m() <= max );
168QString QgsFilterVerticesByZ::name()
const
170 return QStringLiteral(
"filterverticesbyz" );
173QString QgsFilterVerticesByZ::displayName()
const
175 return QObject::tr(
"Filter vertices by Z value" );
178QStringList QgsFilterVerticesByZ::tags()
const
180 return QObject::tr(
"filter,points,vertex,z" ).split(
',' );
183QgsFilterVerticesByZ *QgsFilterVerticesByZ::createInstance()
const
185 return new QgsFilterVerticesByZ();
188bool QgsFilterVerticesByZ::supportInPlaceEdit(
const QgsMapLayer *l )
const
190 const QgsVectorLayer *layer = qobject_cast<const QgsVectorLayer *>( l );
194 if ( !QgsFilterVerticesAlgorithmBase::supportInPlaceEdit( layer ) )
199QString QgsFilterVerticesByZ::componentString()
const
201 return QObject::tr(
"z-value" );
204void QgsFilterVerticesByZ::filter(
QgsGeometry &geometry,
double min,
double max )
const
207 return ( std::isnan( min ) || point.
z() >= min )
208 && ( std::isnan( max ) || point.
z() <= max );
@ Double
Double/float values.
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.
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...
Definition for a property.
@ Double
Double value (including negative values)
A store for object properties.
Represents a vector layer which manages a vector based dataset.
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