QGIS API Documentation
3.14.0-Pi (9f7028fd23)
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23 #include <QJsonObject>
24 #include <nlohmann/json.hpp>
33 return QStringLiteral(
"MultiPoint" );
38 auto result = qgis::make_unique< QgsMultiPoint >();
40 return result.release();
55 QString collectionWkt( wkt );
57 QRegExp regex(
"^\\s*MultiPoint\\s*[ZM]*\\s*\\(\\s*[-\\d]" );
58 regex.setCaseSensitivity( Qt::CaseInsensitive );
59 if ( regex.indexIn( collectionWkt ) >= 0 )
62 collectionWkt.replace(
'(', QLatin1String(
"((" ) ).replace(
')', QLatin1String(
"))" ) ).replace(
',', QLatin1String(
"),(" ) );
76 QDomElement elemMultiPoint = doc.createElementNS( ns, QStringLiteral(
"MultiPoint" ) );
79 return elemMultiPoint;
83 if ( qgsgeometry_cast<const QgsPoint *>( geom ) )
85 QDomElement elemPointMember = doc.createElementNS( ns, QStringLiteral(
"pointMember" ) );
86 elemPointMember.appendChild( geom->asGml2( doc,
precision, ns, axisOrder ) );
87 elemMultiPoint.appendChild( elemPointMember );
91 return elemMultiPoint;
96 QDomElement elemMultiPoint = doc.createElementNS( ns, QStringLiteral(
"MultiPoint" ) );
99 return elemMultiPoint;
103 if ( qgsgeometry_cast<const QgsPoint *>( geom ) )
105 QDomElement elemPointMember = doc.createElementNS( ns, QStringLiteral(
"pointMember" ) );
106 elemPointMember.appendChild( geom->asGml3( doc,
precision, ns, axisOrder ) );
107 elemMultiPoint.appendChild( elemPointMember );
111 return elemMultiPoint;
118 {
"type",
"MultiPoint" },
119 {
"coordinates", json::array() },
140 if ( !qgsgeometry_cast<QgsPoint *>( g ) )
179 if (
id.part < 0 || id.part >=
mGeometries.count() ||
id.vertex != 0 ||
id.ring != 0 )
200 if ( const QgsPoint *point = qgsgeometry_cast< const QgsPoint * >( part ) )
202 if ( !filter( *point ) )
217 } ), mGeometries.end() );
virtual bool dropMValue()=0
Drops any measure values which exist in the geometry.
virtual bool insertGeometry(QgsAbstractGeometry *g, int index)
Inserts a geometry before a specified index and takes ownership.
bool insertGeometry(QgsAbstractGeometry *g, int index) override
Inserts a geometry before a specified index and takes ownership.
QgsWkbTypes::Type wkbType() const
Returns the WKB type of the geometry.
virtual bool dropZValue()=0
Drops any z-dimensions which exist in the geometry.
int vertexNumberFromVertexId(QgsVertexId id) const override
Returns the vertex number corresponding to a vertex id.
virtual bool addZValue(double zValue=0)=0
Adds a z-dimension to the geometry, initialized to a preset value.
Point geometry type, with support for z-dimension and m-values.
int nCoordinates() const override
Returns the number of nodes contained in the geometry.
virtual bool addMValue(double mValue=0)=0
Adds a measure to the geometry, initialized to a preset value.
bool addGeometry(QgsAbstractGeometry *g) override
Adds a geometry and takes ownership. Returns true in case of success.
QgsMultiPoint * clone() const override
Clones the geometry by performing a deep copy.
QVector< QgsAbstractGeometry * > mGeometries
QgsWkbTypes::Type mWkbType
QgsMultiPoint * createEmptyWithSameType() const override
Creates a new geometry with the same class and same WKB type as the original and transfers ownership.
void clear() override
Clears the geometry, ie reset it to a null geometry.
AxisOrder
Axis order for GML generation.
bool isEmpty() const override
Returns true if the geometry is empty.
virtual bool addGeometry(QgsAbstractGeometry *g)
Adds a geometry and takes ownership. Returns true in case of success.
double qgsRound(double number, int places)
Returns a double number, rounded (as close as possible) to the specified number of places.
bool fromCollectionWkt(const QString &wkt, const QVector< QgsAbstractGeometry * > &subtypes, const QString &defaultChildWkbType=QString())
Reads a collection from a WKT string.
bool is3D() const
Returns true if the geometry is 3D and contains a z-value.
Multi point geometry collection.
Abstract base class for all geometries.
bool fromWkt(const QString &wkt) override
Sets the geometry from a WKT string.
QgsMultiPoint * toCurveType() const override
Returns the geometry converted to the more generic curve type.
QDomElement asGml3(QDomDocument &doc, int precision=17, const QString &ns="gml", QgsAbstractGeometry::AxisOrder axisOrder=QgsAbstractGeometry::AxisOrder::XY) const override
Returns a GML3 representation of the geometry.
Utility class for identifying a unique vertex within a geometry.
double segmentLength(QgsVertexId startVertex) const override
Returns the length of the segment of the geometry which begins at startVertex.
void filterVertices(const std::function< bool(const QgsPoint &) > &filter) override
Filters the vertices from the geometry in place, removing any which do not return true for the filter...
bool isMeasure() const
Returns true if the geometry contains m values.
void clear() override
Clears the geometry, ie reset it to a null geometry.
QDomElement asGml2(QDomDocument &doc, int precision=17, const QString &ns="gml", QgsAbstractGeometry::AxisOrder axisOrder=QgsAbstractGeometry::AxisOrder::XY) const override
Returns a GML2 representation of the geometry.
void setZMTypeFromSubGeometry(const QgsAbstractGeometry *subggeom, QgsWkbTypes::Type baseGeomType)
Updates the geometry type based on whether sub geometries contain z or m values.
bool isValid(QString &error, int flags=0) const override
Checks validity of the geometry, and returns true if the geometry is valid.
QgsAbstractGeometry * boundary() const override
Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the...
QString geometryType() const override
Returns a unique string representing the geometry type.
static Type flatType(Type type)
Returns the flat type for a WKB type.
bool wktOmitChildType() const override
Returns whether child type names are omitted from Wkt representations of the collection.
json asJsonObject(int precision=17) const override
Returns a json object representation of the geometry.