AGSPart Class Reference

Description

Represents a single part of a multipart geometry (AGSPolygon or AGSPolyline).

Instances of this class represent an individual part of a multipart geometry such as polygon or polyline. A part is a collection of segments that define the shape of the part. As a convenience, you can access points that represent the vertices of the part, instead of working with segments.

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

 let part:AGSPart = ... //A part containing segments
 for segment in part {
do something
 }

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

let part:AGSMutablePart = ... //A part containing segments
let segment = part[0] //The segment at 0th index

Since

100

Inheritance diagram for AGSPart:

Instance Methods
(NSInteger)	- endPointIndexForSegmentIndex:
(AGSPoint *)	- pointAtIndex:
(AGSSegment *)	- segmentAtIndex:
(NSInteger)	- segmentIndexForEndPointIndex:
(void)	- segmentIndexForPointIndex:outSegmentStartPointIndex:outSegmentEndPointIndex:
(NSInteger)	- segmentIndexForStartPointIndex:
(NSInteger)	- startPointIndexForSegmentIndex:

Properties
BOOL	empty
AGSPoint *	endPoint
BOOL	hasCurves
NSInteger	pointCount
AGSPointCollection *	points
NSInteger	segmentCount
AGSSpatialReference *	spatialReference
AGSPoint *	startPoint

Method Documentation

endPointIndexForSegmentIndex:()

- (NSInteger) endPointIndexForSegmentIndex:

(NSInteger)

segmentIndex

Position of ending vertex for the specified segment

Parameters

segmentIndex

representing the position of the segment whose ending vertex is desired

Returns

Position of the ending vertex. 0 is the first position

Since

100

pointAtIndex:()

- (AGSPoint*) pointAtIndex:

(NSInteger)

index

Vertex at specified position in the part

Parameters

index

of desired position. 0 is the first position

Since

100

segmentAtIndex:()

- (AGSSegment*) segmentAtIndex:

(NSInteger)

index

Segment at specified position in the part

Parameters

index

of desired position. 0 is the first position

Since

100

segmentIndexForEndPointIndex:()

- (NSInteger) segmentIndexForEndPointIndex:

(NSInteger)

pointIndex

Position of segment that contains the specified vertex as its ending point

Parameters

pointIndex

representing the position of vertex which serves as the ending point for the segment

Returns

Position of segment. 0 is the first position

Since

100

segmentIndexForPointIndex:outSegmentStartPointIndex:outSegmentEndPointIndex:()

- (void) segmentIndexForPointIndex:		(NSInteger)	pointIndex
outSegmentStartPointIndex:		(NSInteger *)	outSegmentStartPointIndex
outSegmentEndPointIndex:		(NSInteger *)	outSegmentEndPointIndex

segmentIndexForStartPointIndex:()

- (NSInteger) segmentIndexForStartPointIndex:

(NSInteger)

pointIndex

Position of segment that contains the specified vertex as its starting point

Parameters

pointIndex

representing the position of vertex which serves as the starting point for the segment

Returns

Position of segment. 0 is the first position

Since

100

startPointIndexForSegmentIndex:()

- (NSInteger) startPointIndexForSegmentIndex:

(NSInteger)

segmentIndex

Position of staring vertex for the specified segment

Parameters

segmentIndex

representing the position of the segment whose starting vertex is desired

Returns

Position of the starting vertex. 0 is the first position

Since

100

Property Documentation

empty

- (BOOL) empty

readnonatomicassign

Indicates whether the part contains any segments

Since

100

endPoint

- (AGSPoint*) endPoint

readnonatomicstrong

Ending vertex of the last segment in the part

Since

100

hasCurves

- (BOOL) hasCurves

readnonatomicassign

Indicates whether this geometry has curves.

Since

100

pointCount

- (NSInteger) pointCount

readnonatomicassign

Number of vertices in the part. Each segment contains 2 vertices (start and end). Connected segments can share a vertex.

Since

100

points

- (AGSPointCollection*) points

readnonatomicstrong

All the vertices in this part

Since

100

segmentCount

- (NSInteger) segmentCount

readnonatomicassign

Number of segments in the part

Since

100

spatialReference

- (AGSSpatialReference*) spatialReference

readnonatomicstrong

The spatial reference associated with segments and vertices in this part. It specifies the coordinate system for each segment and vertex's x & y coordinate values. All segments and vertices that belong to this part 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.

startPoint

- (AGSPoint*) startPoint

readnonatomicstrong

Starting vertex of the first segment in the part

Since

100