class QGeoPolygon¶

The QGeoPolygon class defines a geographic polygon. More…

Synopsis¶

Properties¶

perimeterᅟ

Methods¶

def __init__()
def addCoordinate()
def addHole()
def containsCoordinate()
def coordinateAt()
def hole()
def holePath()
def holesCount()
def insertCoordinate()
def length()
def perimeter()
def removeCoordinate()
def removeHole()
def replaceCoordinate()
def setPerimeter()
def size()
def translate()
def translated()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

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:

perimeter()
setPerimeter()

__init__()¶

Constructs a new, empty geo polygon.

__init__(other)

Parameters:: other – QGeoPolygon

Constructs a new geo polygon from the contents of other.

__init__(other)

Parameters:: other – QGeoShape

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:: coordinate – QGeoCoordinate

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:: coordinate – QGeoCoordinate
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:

index – int
coordinate – QGeoCoordinate

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:: coordinate – QGeoCoordinate

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:

index – int
coordinate – QGeoCoordinate

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()