AGSGeometryBuilder Class Reference

Description

A builder to build geometries.

Instances of this class represent a builder that can build geometries. Geometries are immutable, they cannot be modified after they are created. Use builders to create new geometries either from scratch, or by using an existing geometry as a starting off point. Modifications made through the builder affect only its own internal copy of the geometry. They do not affect the original geometry.

Since

100

See also

AGSSketchEditor to construct or modify geometries interactively by sketching on a map.

Inheritance diagram for AGSGeometryBuilder:

Instance Methods
(BOOL)	- isEmpty
(instancetype)	- replaceGeometry:
(AGSGeometry *)	- toGeometry

Class Methods
(AGSGeometryBuilder *)	+ builderWithGeometry:
(AGSGeometryBuilder *)	+ builderWithGeometryType:spatialReference:

Properties
AGSEnvelope *	extent
AGSGeometryType	geometryType
BOOL	hasCurves
BOOL	hasM
BOOL	hasZ
AGSSpatialReference *	spatialReference

Method Documentation

builderWithGeometry:

+ (AGSGeometryBuilder*) builderWithGeometry:

(nullable AGSGeometry *)

geometry

Factory method to create a geometry builder from a geometry.

Parameters

geometry

The geometry to be used as the starting point for further modifications.

Since

100

See also

AGSGeometryBuilder::hasCurves

builderWithGeometryType:spatialReference:

+ (AGSGeometryBuilder*) builderWithGeometryType:		(AGSGeometryType)	geometryType
spatialReference:		(nullable AGSSpatialReference *)	sr

Factory method to create a geometry builder from a geometry type and spatial reference.

Prior to v100.12, only geometries without curves could be used. Passing in a geometry where AGSGeometry::hasCurves is YES would fail to replace the geometry.

From v100.12, geometries with curves are supported.

Parameters

geometryType	The type of geometry to be constructed.
sr	The spatial reference for the geometry to be constructed.

Since

100

See also

AGSGeometryBuilder::hasCurves

isEmpty

- (BOOL) isEmpty

Indicates whether the builder's geometry is empty.

Returns

If the geometry is empty.

Since

100

See also

AGSGeometry::isEmpty

replaceGeometry:

- (instancetype) replaceGeometry:

(nullable AGSGeometry *)

geometry

Replaces the builder's geometry with the provided one.

This does not update the spatial reference of the builder. If the geometry is nil, the builder is cleared.

Prior to v100.12, only geometries without curves could be used. Passing in a geometry where AGSGeometry::hasCurves is YES would fail to replace the geometry.

From v100.12, geometries with curves are supported.

Parameters

geometry

The geometry object to replace with.

Returns

The builder so you can easily chain method calls.

Since

100

toGeometry

- (AGSGeometry*) toGeometry

Returns the geometry this builder is constructing or modifying.

Returns

A new geometry object.

Since

100

Implemented in AGSPolylineBuilder, AGSPolygonBuilder, AGSPointBuilder, AGSMultipointBuilder, and AGSEnvelopeBuilder.

Property Documentation

extent

- (AGSEnvelope*) extent

readnonatomicstrong

Smallest, rectangular bounding-box that covers the builder's geometry.

Since

100

See also

AGSGeometry::extent

geometryType

- (AGSGeometryType) geometryType

readnonatomicassign

The type of geometry the builder will construct or modify.

Since

100

hasCurves

- (BOOL) hasCurves

readnonatomicassign

A value indicating whether the geometry builder currently contains any curve segments.

The ArcGIS Platform supports polygon and polyline geometries that contain curve segments (where AGSSegment::curve is YES, sometimes known as true curves or nonlinear segments). Curves may be present in certain types of data - for example Mobile Map Packages (MMPKs), or geometry JSON.

Prior to v100.12, only AGSLineSegment instances were supported when creating new geometries using an AGSMultipartBuilder. Attempting to add curve geometries to an AGSMultipartBuilder would cause an error.

From v100.12, you can use curves in an AGSMultipartBuilder. New segment types AGSCubicBezierSegment and AGSEllipticArcSegment represent different types of curve that can be added to polygon and polyline geometries.

See also

AGSMutablePart::hasCurves, AGSGeometry::hasCurves, AGSSegment::curve

Since

100.12

hasM

- (BOOL) hasM

readnonatomicassign

Indicates whether the builder's geometry contains m (measure) values.

Since

100

See also

AGSGeometry::hasM

hasZ

- (BOOL) hasZ

readnonatomicassign

Indicates whether the builder's geometry contains z coordinate values.

Since

100

See also

AGSGeometry::hasZ

spatialReference

- (AGSSpatialReference*) spatialReference

readnonatomicstrong

The spatial reference associated with the builder's gometry. It specifies the coordinate system for the geometry's x, y, and z coordinate values.

Since

100

Note

Geometries that represent geographic locations should always have a spatial reference. Otherwise the coordinates of the geometry are meaningless.

See also

AGSGeometry::spatialReference