Helper class for building immutable polygon geometries. More...
| Header: | #include <PolygonBuilder.h> |
| Since: | Esri::ArcGISRuntime 100.0 |
| Inherits: | Esri::ArcGISRuntime::MultipartBuilder |
This class was introduced in Esri::ArcGISRuntime 100.0.
Public Functions
| PolygonBuilder(const Esri::ArcGISRuntime::Polygon &polygon, QObject *parent = nullptr) | |
| PolygonBuilder(const Esri::ArcGISRuntime::SpatialReference &spatialReference, QObject *parent = nullptr) | |
| virtual | ~PolygonBuilder() override |
| Esri::ArcGISRuntime::Polygon | toPolygon() const |
| Esri::ArcGISRuntime::Polyline | toPolyline() const |
Reimplemented Public Functions
| virtual Esri::ArcGISRuntime::GeometryBuilderType | geometryBuilderType() const override |
| virtual Esri::ArcGISRuntime::Geometry | toGeometry() const override |
Detailed Description
The initial shape stored in the builder can be initialized in the constructors by passing in existing geometries or collections. Change the contents of the shape by using the mutable PartCollection accessible from the parts() getter. Call the toGeometry method to create a new immutable Polygon from the current state of this builder.
// create a polygon builder PolygonBuilder* polygonBuilder = new PolygonBuilder(SpatialReference(3857), this); // create a single-part polygon using x/y polygonBuilder->addPoint(-18.0, 34.0); polygonBuilder->addPoint(-18.0, 35.0); polygonBuilder->addPoint(-17.0, 34.0); Polygon singlePartPolygonXY(polygonBuilder->toGeometry()); // create a multi-part polygon with same PolygonBuilder PartCollection* partCollection = new PartCollection(polygonBuilder->spatialReference(), this); // create outer poly 1 Part* part1 = new Part(polygonBuilder->spatialReference(), this); part1->addPoint(2.123456789, 3.123456789); part1->addPoint(1.123456789, 3.123456789); part1->addPoint(1.123456789, 1.123456789); partCollection->addPart(part1); // create outer poly 2 Part* part2 = new Part(polygonBuilder->spatialReference(), this); part2->addPoint(3.123456789, 3.123456789); part2->addPoint(4.123456789, 3.123456789); part2->addPoint(4.123456789, 1.123456789); partCollection->addPart(part2); polygonBuilder->setParts(partCollection); Polygon multipartPolygon = polygonBuilder->toPolygon();
Member Function Documentation
PolygonBuilder::PolygonBuilder (const Esri::ArcGISRuntime::Polygon &polygon, QObject *parent = nullptr)
Constructor that takes a polygon and an optional parent.
See also GeometryBuilder::hasCurves.
PolygonBuilder::PolygonBuilder (const Esri::ArcGISRuntime::SpatialReference &spatialReference , QObject *parent = nullptr)
Constructor that takes a spatialReference and an optional parent.
See also GeometryBuilder::hasCurves.
[override virtual] PolygonBuilder::~PolygonBuilder ()
Destructor.
[override virtual] Esri::ArcGISRuntime::GeometryBuilderType PolygonBuilder::geometryBuilderType () const
Reimplements: GeometryBuilder::geometryBuilderType() const.
Returns the GeometryBuilderType of this builder.
[override virtual] Esri::ArcGISRuntime::Geometry PolygonBuilder::toGeometry () const
Reimplements: GeometryBuilder::toGeometry() const.
Returns the Polygon geometry this builder is constructing or modifying.
Esri::ArcGISRuntime::Polygon PolygonBuilder::toPolygon () const
Returns the Polygon geometry this builder is constructing or modifying.
This is a convenience method to avoid casting the return value.
Esri::ArcGISRuntime::Polyline PolygonBuilder::toPolyline () const
Returns a polyline with the values in the polygon builder.