Package io.github.sebasbaumh.postgis

Class CircularString

java.lang.Object

io.github.sebasbaumh.postgis.Geometry

io.github.sebasbaumh.postgis.Curve

io.github.sebasbaumh.postgis.LineString

io.github.sebasbaumh.postgis.CircularString

All Implemented Interfaces:

LineBasedGeometry, Serializable, Iterable<Point>

@NonNullByDefault
public class CircularString
extends LineString

The CIRCULARSTRING is the basic curve type, similar to a LINESTRING in the linear world. A single segment required three points, the start and end points (first and third) and any other point on the arc. The exception to this is for a closed circle, where the start and end points are the same. In this case the second point MUST be the center of the arc, ie the opposite side of the circle. To chain arcs together, the last point of the previous arc becomes the first point of the next arc, just like in LINESTRING. This means that a valid circular string must have an odd number of points greater than 1.

Author:

Sebastian Baumhekel

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TYPE	The OGIS geometry type number for arcs/circles.

Fields inherited from class io.github.sebasbaumh.postgis.Geometry

UNKNOWN_SRID

Constructor Summary

Constructors

Constructor	Description
CircularString()	Constructs an instance.
CircularString(Iterable<Point> points)	Constructs an instance.

Method Summary

Modifier and Type	Method	Description
double	length()	Gets the length of this line.

Methods inherited from class io.github.sebasbaumh.postgis.LineString

add, addAll, checkConsistency, close, equals, getCoordinates, getEndPoint, getNumberOfCoordinates, getStartPoint, hashCode, hasMeasure, is3d, isEmpty, iterator, reverse

Methods inherited from class io.github.sebasbaumh.postgis.Curve

isClockwise, isClosed, toString

Methods inherited from class io.github.sebasbaumh.postgis.Geometry

getSrid, getType, setSrid

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Details

TYPE

public static final int TYPE

The OGIS geometry type number for arcs/circles.

See Also:

• Constant Field Values

Constructor Details

CircularString

public CircularString()

Constructs an instance.

CircularString

public CircularString(Iterable<Point> points)

Constructs an instance.

Parameters:

points - points

Method Details

length

public double length()

Description copied from interface: LineBasedGeometry

Gets the length of this line.

Specified by:

length in interface LineBasedGeometry

Overrides:

length in class LineString

Returns:

length