The geocircle type represents a circular geographic area. 更多...
| import 语句： | import QtPositioning |
The
geocircle
type is a
geoshape
that represents a circular geographic area. It is a direct representation of a
QGeoCircle
and is defined in terms of a
coordinate
which specifies the
center
of the circle and a qreal which specifies the
radius
of the circle in meters.
The circle is considered invalid if the center coordinate is invalid or if the radius is less than zero.
Use properties of type
var
to store a
geocircle
. To create a
geocircle
值，使用
QtPositioning.circle
() 函数：
import QtPositioning Item { property var region: QtPositioning.circle(QtPositioning.coordinate(-27.5, 153.1), 1000) }
When integrating with C++, note that any
QGeoCircle
value passed into QML from C++ is automatically converted into a
geocircle
value, and vise-versa.
coordinate radius
This property holds the coordinate of the center of the geocircle.
real radius
This property holds the radius of the geocircle in meters.
The default value for the radius is -1 indicating an invalid geocircle area.
