class QGeoPolygon

The QGeoPolygon class defines a geographic polygon. More

Inheritance diagram of PySide6.QtPositioning.QGeoPolygon

Synopsis

Properties

Methods

Note

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Detailed Description

The polygon is defined by an ordered list of QGeoCoordinate objects representing its perimeter.

Each two adjacent elements in this list are intended to be connected together by the shortest line segment of constant bearing passing through both elements. This type of connection can cross the date line in the longitudinal direction, but never crosses the poles.

This is relevant for the calculation of the bounding box returned by boundingGeoRectangle() for this shape, which will have the latitude of the top left corner set to the maximum latitude in the path point set. Similarly, the latitude of the bottom right corner will be the minimum latitude in the path point set.

This class is a Q_GADGET. It can be directly used from C++ and QML .

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property perimeterᅟ: list of QGeoCoordinate
Access functions:
__init__()

Constructs a new, empty geo polygon.

__init__(other)
Parameters:

otherQGeoPolygon

Constructs a new geo polygon from the contents of other.

__init__(other)
Parameters:

otherQGeoShape

Constructs a new geo polygon from the contents of other.

__init__(path)
Parameters:

path – .list of QGeoCoordinate

Constructs a new geo polygon from the coordinates specified in path.

addCoordinate(coordinate)
Parameters:

coordinateQGeoCoordinate

Appends coordinate to the polygon.

addHole(holePath)
Parameters:

holePath – .list of QGeoCoordinate

Overloaded method. Sets the holePath for a hole inside the polygon. The hole is a QList< QGeoCoordinate >.

addHole(holePath)
Parameters:

holePath – object

Sets the holePath for a hole inside the polygon. The hole is a QVariant containing a QList< QGeoCoordinate >.

containsCoordinate(coordinate)
Parameters:

coordinateQGeoCoordinate

Return type:

bool

Returns true if the polygon’s perimeter contains coordinate as one of the elements.

coordinateAt(index)
Parameters:

index – int

Return type:

QGeoCoordinate

Returns the coordinate at index .

hole(index)
Parameters:

index – int

Return type:

.list of QVariant

Returns a QVariant containing a QList< QGeoCoordinate > which represents the hole at index.

holePath(index)
Parameters:

index – int

Return type:

.list of QGeoCoordinate

Returns a QList< QGeoCoordinate > which represents the hole at index.

holesCount()
Return type:

int

Returns the number of holes.

insertCoordinate(index, coordinate)
Parameters:

Inserts coordinate at the specified index.

length([indexFrom=0[, indexTo=-1]])
Parameters:
  • indexFrom – int

  • indexTo – int

Return type:

float

Returns the length of the polygon’s perimeter, in meters, from the element indexFrom to the element indexTo. The length is intended to be the sum of the shortest distances for each pair of adjacent points.

perimeter()
Return type:

.list of QGeoCoordinate

Returns all the elements of the polygon’s perimeter.

See also

setPerimeter()

Getter of property perimeterᅟ .

removeCoordinate(coordinate)
Parameters:

coordinateQGeoCoordinate

Removes the last occurrence of coordinate from the polygon.

removeCoordinate(index)
Parameters:

index – int

Removes element at position index from the polygon.

removeHole(index)
Parameters:

index – int

Removes element at position index from the list of holes.

replaceCoordinate(index, coordinate)
Parameters:

Replaces the path element at the specified index with coordinate.

setPerimeter(path)
Parameters:

path – .list of QGeoCoordinate

Sets the perimeter of the polygon based on a list of coordinates path.

See also

perimeter()

Setter of property perimeterᅟ .

size()
Return type:

int

Returns the number of elements in the polygon.

translate(degreesLatitude, degreesLongitude)
Parameters:
  • degreesLatitude – float

  • degreesLongitude – float

Translates this geo polygon by degreesLatitude northwards and degreesLongitude eastwards.

Negative values of degreesLatitude and degreesLongitude correspond to southward and westward translation respectively.

translated(degreesLatitude, degreesLongitude)
Parameters:
  • degreesLatitude – float

  • degreesLongitude – float

Return type:

QGeoPolygon

Returns a copy of this geo polygon translated by degreesLatitude northwards and degreesLongitude eastwards.

Negative values of degreesLatitude and degreesLongitude correspond to southward and westward translation respectively.

See also

translate()