mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-25 00:05:24 -04:00
236 lines
7.8 KiB
Plaintext
236 lines
7.8 KiB
Plaintext
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsspatialindex.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class QgsSpatialIndex : QgsFeatureSink
|
|
{
|
|
%Docstring
|
|
|
|
A spatial index for QgsFeature objects.
|
|
|
|
QgsSpatialIndex objects are implicitly shared and can be inexpensively copied.
|
|
|
|
.. note::
|
|
|
|
While the underlying libspatialindex is not thread safe on some platforms, the QgsSpatialIndex
|
|
class implements its own locks and accordingly, a single QgsSpatialIndex object can safely
|
|
be used across multiple threads.
|
|
|
|
.. seealso:: :py:class:`QgsSpatialIndexKDBush`
|
|
|
|
.. seealso:: :py:class:`QgsMeshSpatialIndex`
|
|
%End
|
|
|
|
%TypeHeaderCode
|
|
#include "qgsspatialindex.h"
|
|
%End
|
|
public:
|
|
|
|
|
|
enum Flag
|
|
{
|
|
FlagStoreFeatureGeometries,
|
|
};
|
|
typedef QFlags<QgsSpatialIndex::Flag> Flags;
|
|
|
|
|
|
QgsSpatialIndex( QgsSpatialIndex::Flags flags = QgsSpatialIndex::Flags() );
|
|
%Docstring
|
|
Constructor for QgsSpatialIndex. Creates an empty R-tree index.
|
|
%End
|
|
|
|
explicit QgsSpatialIndex( const QgsFeatureIterator &fi, QgsFeedback *feedback = 0, QgsSpatialIndex::Flags flags = QgsSpatialIndex::Flags() );
|
|
%Docstring
|
|
Constructor - creates R-tree and bulk loads it with features from the iterator.
|
|
This is much faster approach than creating an empty index and then inserting features one by one.
|
|
|
|
The optional ``feedback`` object can be used to allow cancellation of bulk feature loading. Ownership
|
|
of ``feedback`` is not transferred, and callers must take care that the lifetime of feedback exceeds
|
|
that of the spatial index construction.
|
|
|
|
.. versionadded:: 2.8
|
|
%End
|
|
|
|
|
|
explicit QgsSpatialIndex( const QgsFeatureSource &source, QgsFeedback *feedback = 0, QgsSpatialIndex::Flags flags = QgsSpatialIndex::Flags() );
|
|
%Docstring
|
|
Constructor - creates R-tree and bulk loads it with features from the source.
|
|
This is much faster approach than creating an empty index and then inserting features one by one.
|
|
|
|
The optional ``feedback`` object can be used to allow cancellation of bulk feature loading. Ownership
|
|
of ``feedback`` is not transferred, and callers must take care that the lifetime of feedback exceeds
|
|
that of the spatial index construction.
|
|
|
|
.. versionadded:: 3.0
|
|
%End
|
|
|
|
QgsSpatialIndex( const QgsSpatialIndex &other );
|
|
%Docstring
|
|
Copy constructor
|
|
%End
|
|
|
|
~QgsSpatialIndex();
|
|
|
|
|
|
|
|
bool insertFeature( const QgsFeature &feature ) /Deprecated/;
|
|
%Docstring
|
|
Adds a ``feature`` to the index.
|
|
|
|
.. deprecated::
|
|
Use addFeature() instead
|
|
%End
|
|
|
|
virtual bool addFeature( QgsFeature &feature, QgsFeatureSink::Flags flags = QgsFeatureSink::Flags() );
|
|
|
|
%Docstring
|
|
Adds a ``feature`` to the index.
|
|
|
|
The ``flags`` argument is ignored.
|
|
|
|
.. versionadded:: 3.4
|
|
%End
|
|
|
|
virtual bool addFeatures( QgsFeatureList &features, QgsFeatureSink::Flags flags = QgsFeatureSink::Flags() );
|
|
|
|
%Docstring
|
|
Adds a list of ``features`` to the index.
|
|
|
|
The ``flags`` argument is ignored.
|
|
|
|
.. seealso:: :py:func:`addFeature`
|
|
%End
|
|
|
|
bool insertFeature( QgsFeatureId id, const QgsRectangle &bounds ) /Deprecated/;
|
|
%Docstring
|
|
Add a feature ``id`` to the index with a specified bounding box.
|
|
|
|
:return: ``True`` if feature was successfully added to index.
|
|
|
|
.. deprecated::
|
|
Use addFeature() instead
|
|
%End
|
|
|
|
bool addFeature( QgsFeatureId id, const QgsRectangle &bounds );
|
|
%Docstring
|
|
Add a feature ``id`` to the index with a specified bounding box.
|
|
|
|
:return: ``True`` if feature was successfully added to index.
|
|
|
|
.. versionadded:: 3.4
|
|
%End
|
|
|
|
bool deleteFeature( const QgsFeature &feature );
|
|
%Docstring
|
|
Removes a ``feature`` from the index.
|
|
%End
|
|
|
|
|
|
|
|
QList<QgsFeatureId> intersects( const QgsRectangle &rectangle ) const;
|
|
%Docstring
|
|
Returns a list of features with a bounding box which intersects the specified ``rectangle``.
|
|
|
|
.. note::
|
|
|
|
The intersection test is performed based on the feature bounding boxes only, so for non-point
|
|
geometry features it is necessary to manually test the returned features for exact geometry intersection
|
|
when required.
|
|
%End
|
|
|
|
QList<QgsFeatureId> nearestNeighbor( const QgsPointXY &point, int neighbors = 1, double maxDistance = 0 ) const;
|
|
%Docstring
|
|
Returns nearest neighbors to a ``point``. The number of neighbors returned is specified
|
|
by the ``neighbors`` argument.
|
|
|
|
If the ``maxDistance`` argument is greater than 0, then only features within the specified
|
|
distance of ``point`` will be considered.
|
|
|
|
Note that in some cases the number of returned features may differ from the requested
|
|
number of ``neighbors``. E.g. if not enough features exist within the ``maxDistance`` of the
|
|
search point. If multiple features are equidistant from the search ``point`` then the
|
|
number of returned feature IDs may exceed ``neighbors``.
|
|
|
|
.. warning::
|
|
|
|
If this QgsSpatialIndex object was not constructed with the FlagStoreFeatureGeometries flag,
|
|
then the nearest neighbor test is performed based on the feature bounding boxes ONLY, so for non-point
|
|
geometry features this method is not guaranteed to return the actual closest neighbors.
|
|
%End
|
|
|
|
QList<QgsFeatureId> nearestNeighbor( const QgsGeometry &geometry, int neighbors = 1, double maxDistance = 0 ) const;
|
|
%Docstring
|
|
Returns nearest neighbors to a ``geometry``. The number of neighbors returned is specified
|
|
by the ``neighbors`` argument.
|
|
|
|
If the ``maxDistance`` argument is greater than 0, then only features within the specified
|
|
distance of ``point`` will be considered.
|
|
|
|
Note that in some cases the number of returned features may differ from the requested
|
|
number of ``neighbors``. E.g. if not enough features exist within the ``maxDistance`` of the
|
|
search point. If multiple features are equidistant from the search ``point`` then the
|
|
number of returned feature IDs may exceed ``neighbors``.
|
|
|
|
.. warning::
|
|
|
|
If this QgsSpatialIndex object was not constructed with the FlagStoreFeatureGeometries flag,
|
|
then the nearest neighbor test is performed based on the feature bounding boxes ONLY, so for non-point
|
|
geometry features this method is not guaranteed to return the actual closest neighbors.
|
|
|
|
.. versionadded:: 3.8
|
|
%End
|
|
|
|
|
|
SIP_PYOBJECT geometry( QgsFeatureId id ) const /TypeHint="QgsGeometry"/;
|
|
%Docstring
|
|
Returns the stored geometry for the indexed feature with matching ``id``. A KeyError will be raised if no
|
|
geometry with the specified feature id exists in the index.
|
|
|
|
Geometry is only stored if the QgsSpatialIndex was created with the FlagStoreFeatureGeometries flag.
|
|
|
|
.. versionadded:: 3.6
|
|
%End
|
|
%MethodCode
|
|
std::unique_ptr< QgsGeometry > g = qgis::make_unique< QgsGeometry >( sipCpp->geometry( a0 ) );
|
|
if ( g->isNull() )
|
|
{
|
|
PyErr_SetString( PyExc_KeyError, QStringLiteral( "No geometry with feature id %1 exists in the index." ).arg( a0 ).toUtf8().constData() );
|
|
sipIsErr = 1;
|
|
}
|
|
else
|
|
{
|
|
sipRes = sipConvertFromType( g.release(), sipType_QgsGeometry, Py_None );
|
|
}
|
|
%End
|
|
|
|
|
|
int refs() const;
|
|
%Docstring
|
|
Gets reference count - just for debugging!
|
|
%End
|
|
|
|
};
|
|
|
|
QFlags<QgsSpatialIndex::Flag> operator|(QgsSpatialIndex::Flag f1, QFlags<QgsSpatialIndex::Flag> f2);
|
|
|
|
|
|
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsspatialindex.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|