AGSPartCollection Class Reference

Description

Parts of a multipart geometry (AGSMultipart).

Instances of this class represent the parts of a multipart geometry (AGSMultipart). For example, polygons have multiple parts where each part is a ring and polylines have multiple parts where each part is a line.

This class adopts NSFastEnumeration which permits the collection to be enumerated conveniently using a for-in loop. For example -

let collection:AGSPartCollection = ... //A collection of parts
for part in collection {
//do something
}

This class also provides subscripting support. So you can access segments using the subscript syntax. For example -

let collection:AGSPartCollection = ... //A collection of parts
let part = collection[0] //The part at 0th index

Since

100

See also

AGSMultipart for multipart geometries

Inheritance diagram for AGSPartCollection:

Instance Methods
(NSArray< AGSPart * > *)	- array
(NSInteger)	- indexOfPart:
(AGSPart *)	- objectAtIndexedSubscript:
(AGSPart *)	- partAtIndex:
(AGSEnumerator *)	- partEnumerator

Properties
NSInteger	count
BOOL	empty
AGSSpatialReference *	spatialReference
NSInteger	totalPointCount

Method Documentation

array

- (NSArray<AGSPart*>*) array

An array of parts.

Since

100

indexOfPart:

- (NSInteger) indexOfPart:

(AGSPart *)

part

The index of the specified part.

Parameters

part	The part whose index needs to be located.

Returns

An index of specified part.

Since

100

objectAtIndexedSubscript:

- (AGSPart*) objectAtIndexedSubscript:

(NSInteger)

idx

The part at the specified index. Supports accessing an individual part using array-style subscript expressions.

AGSPolygon* polygon = ... ; //polygon with 2 parts (rings)
AGSPartCollection* parts = polygon.parts;
AGSPointCollection* part = parts[0]; //The 0th part

Parameters

idx	An index within the bounds of the collection.

Returns

The part located at the index.

Since

100

partAtIndex:

- (AGSPart*) partAtIndex:

(NSInteger)

index

The part at the specified index.

Parameters

index

An index within the bounds of the collection.

Returns

The part located at the index.

Since

100

partEnumerator

- (AGSEnumerator*) partEnumerator

An enumerator object that lets you access each object in the part collection.

Since

100

Property Documentation

count

- (NSInteger) count

readnonatomicassign

The number of parts of the geometry.

Since

100

empty

- (BOOL) empty

readnonatomicassign

Indicates whether the collection is empty or not.

Since

100

spatialReference

- (AGSSpatialReference*) spatialReference

readnonatomicstrong

The spatial reference associated with parts in the collection. It specifies the coordinate system for each part's x & y coordinate values. All parts in this collection must have the same spatial reference, or if they don't have a spatial reference, it will be assumed that they contain coordinates that match this spatial reference.

Since

100

Note

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

totalPointCount

- (NSInteger) totalPointCount

readnonatomicassign

The total number of points (vertices) across all parts of the geometry.

Since

100