Class Segment
 java.lang.Object

 com.esri.arcgisruntime.geometry.Segment

 Direct Known Subclasses:
CubicBezierSegment
,EllipticArcSegment
,LineSegment
public abstract class Segment extends java.lang.Object
A segment represents an edge of a multipart geometry, connecting a start to an end point.A segment describes a continuous line between a start location and an end location. The ArcGIS Platform, including ArcGIS Runtime, supports both linear segments (represented by
LineSegment
) and curve segments,(represented byCubicBezierSegment
andEllipticArcSegment
).GeometryEngine.densify(Geometry, double)
can translate curve segments into multipleLineSegment
instances to approximate the curve.Every
ImmutablePart
in aMultipart
geometry is a collection ofSegment
instances, where the end of one segment is at exactly the same location as the start of the following segment.Multipart
geometries can be composed from and decomposed into their constituent segments if required.Because a single location is shared by adjacent segments, a single
Point
object is used to represent the shared location when you iterate through the points in a part. As a result, when iterating through the points in a part of a polyline or polygon, there will be one more point than the number of segments in that same part.Segments are immutable so you can not change a segment's shape once it is created. For workflows that involve geometry editing, create a new segment with the properties you require.
From v100.12, curve segments are supported in geometry editing workflows. You can add curve segments to a
MultipartBuilder
, and if a geometry has curves (Geometry.hasCurves()
is true) then curve segments will be returned where applicable from theImmutablePart
collections that comprise the multipart geometry. Curve and linear segments can be mixed together in the same geometry.Like the geometries they comprise, a
Segment
is immutable. Since:
 100.0.0


Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Point
getEndPoint()
Gets a Point representing the end of this Segment.SpatialReference
getSpatialReference()
Gets the SpatialReference of this Segment.Point
getStartPoint()
Gets a Point representing the start of this Segment.boolean
isClosed()
Indicates if this segment is closed, that is it has a matching start and end point.boolean
isCurve()
Indicates if this Segment is curved.



Method Detail

getStartPoint
public Point getStartPoint()
Gets a Point representing the start of this Segment. Returns:
 the start point
 Since:
 100.0.0

getEndPoint
public Point getEndPoint()
Gets a Point representing the end of this Segment. Returns:
 the end point
 Since:
 100.0.0

getSpatialReference
public SpatialReference getSpatialReference()
Gets the SpatialReference of this Segment. Returns:
 the SpatialReference of this Segment.
 Since:
 100.0.0

isCurve
public boolean isCurve()
Indicates if this Segment is curved. Prior to v100.12, onlyLineSegment
instances were supported when creating new geometries using aMultipartBuilder
or iterating theSegment
instances in an existingMultipart
geometry.From v100.12, you can add curve segments when using a
MultipartBuilder
, and get them back from an existingMultipart
geometry whenGeometry.hasCurves()
is true. Returns:
 false if the object is a
LineSegment
; true otherwise  Since:
 100.10.0
 See Also:
GeometryBuilder.hasCurves()
,Part.hasCurves()
,CubicBezierSegment
,EllipticArcSegment

isClosed
public boolean isClosed()
Indicates if this segment is closed, that is it has a matching start and end point. Returns:
 true if the segment is closed, false otherwise
 Since:
 100.0.0

