AGSPolyline Class Reference

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Description

Instances of this class represent polyline objects. A polyline is defined by a collection of paths and an optional spatial reference. A path represents a continuous line and is defined by an array of points. Each point constitutes a vertex of the polyline.

AGSPolyline represents an immutable polyline, it cannot be altered after being created. Use AGSMutablePolyline for a mutable polyline. You can get a mutable version from AGSPolyline by passing the mutableCopy message to an instance of AGSPolyline.

Defined in:

AGSPolyline.h ( ArcGIS library)

Since:

1.0

Inheritance diagram for AGSPolyline:

List of all members.

Public Member Functions
(void)	- decodeWithJSON:
(NSDictionary *)	- encodeToJSON
(id)	- initWithJSON:
(id)	- initWithJSON:spatialReference:
(id)	- initWithSpatialReference:
(BOOL)	- intersectsWithEnvelope:
(BOOL)	- isEmpty
(BOOL)	- isEqualToPolyline:
(BOOL)	- isValid
(NSUInteger)	- numPointsInPath:
(AGSPoint *)	- pointOnPath:atIndex:
Static Public Member Functions
(id)	+ polylineWithJSON:
Properties
NSUInteger	numPaths
AGSSpatialReference *	spatialReference

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Member Function Documentation

- (void) decodeWithJSON:

(NSDictionary *)

json

[optional, inherited]

Decode object from JSON representation.

Parameters:

json

The JSON representation of the object to be decoded.

Since:

1.0

- (NSDictionary *) encodeToJSON

[optional, inherited]

Encode and return JSON representation for object.

Returns:

JSON representation of object.

Since:

1.0

- (id) initWithJSON:

(NSDictionary *)

json

[optional, inherited]

Initialize and return object from JSON representation.

Parameters:

json

The JSON representation of the object to be created.

Returns:

Object decoded from JSON representation.

Since:

1.0

- (id) initWithJSON:		(NSDictionary *)	json
spatialReference:		(AGSSpatialReference*)	sr

Initialize geometry object with json and a spatial reference.

Parameters:

	json	The JSON to initialize an AGSGeometry with.
	sr	The spatial reference of geometry represented in json.

Returns:

A new geometry object.

Since:

1.0

- (id) initWithSpatialReference:

(AGSSpatialReference *)

spatialReference

Initialize geometry object with spatial reference.

Parameters:

spatialReference

The spatial referenc of geometry.

Returns:

A new geometry object.

Since:

1.0

- (BOOL) intersectsWithEnvelope:

(AGSEnvelope *)

envelope

Returns true if envelope intersects this geometry.

Parameters:

envelope

The envelope to test intersection relation.

Returns:

True if envelopes intersects.

Since:

1.0

Reimplemented in AGSEnvelope.

- (BOOL) isEmpty

Returns whether or not the geometry is empty.

Since:

1.8

Reimplemented in AGSEnvelope.

- (BOOL) isEqualToPolyline:

(AGSPolyline*)

other

Returns a value whether another polyline is equal to this polyline.

Parameters:

other

The other polyline to compare to.

Returns:

Whether or not the other polyline is equal to this polyline.

Since:

1.8

- (BOOL) isValid

Returns whether or not the geometry is valid.

Since:

1.8

- (NSUInteger) numPointsInPath:

(NSUInteger)

path

Get number of points in the specified path.

Parameters:

path

The index of the desired path.

Returns:

Number of points in path.

Since:

1.0

- (AGSPoint *) pointOnPath:		(NSUInteger)	path
atIndex:		(NSUInteger)	index

Get point from path at specified index.

Parameters:

	path	The index of desired path.
	index	The index of the desired point.

Returns:

Point in path at index.

Since:

1.0

+ (id) polylineWithJSON:

(NSDictionary *)

json

Initialize a new autoreleased polyline geometry.

Parameters:

json

The JSON representation for polyline. See REST API documentation for JSON syntax.

Returns:

A new, autoreleased, polyline geometry object.

Since:

1.0

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Property Documentation

- (NSUInteger) numPaths [read, assign]

Number of paths in polyline.

Since:

1.0

- (AGSSpatialReference*) spatialReference [read, retain, inherited]

Geometry's spatial reference.

Since:

1.0

Reimplemented in AGSMutableEnvelope, AGSMutableMultipoint, AGSMutablePoint, AGSMutablePolygon, and AGSMutablePolyline.