Object
- Geometry
- - LineString
  - - CircularString

All Implemented Interfaces:

Serializable, Cloneable, Comparable, CurvedGeometry<LineString>, SingleCurvedGeometry<LineString>, Lineal
```
public class CircularString
extends LineString
implements SingleCurvedGeometry<LineString>
```
A CircularString is a sequence of zero or more connected circular arc segments. A circular arc segment is a curved segment defined by three points in a two-dimensional plane; the first point cannot be the same as the third point.

Author:

Andrea Aime - GeoSolutions

See Also:

Serialized Form

Field Summary
- Fields inherited from class LineString
  MINIMUM_VALID_SIZE, points
- Fields inherited from class Geometry
  envelope, factory, SRID, TYPECODE_GEOMETRYCOLLECTION, TYPECODE_LINEARRING, TYPECODE_LINESTRING, TYPECODE_MULTILINESTRING, TYPECODE_MULTIPOINT, TYPECODE_MULTIPOLYGON, TYPECODE_POINT, TYPECODE_POLYGON, TYPENAME_GEOMETRYCOLLECTION, TYPENAME_LINEARRING, TYPENAME_LINESTRING, TYPENAME_MULTILINESTRING, TYPENAME_MULTIPOINT, TYPENAME_MULTIPOLYGON, TYPENAME_POINT, TYPENAME_POLYGON

Constructor Summary

Constructors
Constructor	Description
`CircularString(double[] controlPoints, GeometryFactory factory, double tolerance)`
`CircularString(CoordinateSequence points, GeometryFactory factory, double tolerance)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`apply(CoordinateFilter filter)`
`void`	`apply(CoordinateSequenceFilter filter)`
`void`	`apply(GeometryComponentFilter filter)`
`void`	`apply(GeometryFilter filter)`
`Geometry`	`buffer(double distance)`
`Geometry`	`buffer(double distance, int quadrantSegments)`
`Geometry`	`buffer(double distance, int quadrantSegments, int endCapStyle)`
`int`	`compareTo(Object o)`
`int`	`compareTo(Object o, CoordinateSequenceComparator comp)`
`protected Envelope`	`computeEnvelopeInternal()`
`boolean`	`contains(Geometry g)`
`Geometry`	`convexHull()`
`protected CircularString`	`copyInternal()`
`boolean`	`coveredBy(Geometry g)`
`boolean`	`covers(Geometry g)`
`boolean`	`crosses(Geometry g)`
`Geometry`	`difference(Geometry other)`
`boolean`	`disjoint(Geometry g)`
`double`	`distance(Geometry g)`
`boolean`	`equals(Object o)`
`boolean`	`equals(Geometry other)`
`boolean`	`equalsExact(Geometry other)`
`boolean`	`equalsExact(Geometry other, double tolerance)`
`boolean`	`equalsNorm(Geometry g)`
`boolean`	`equalsTopo(Geometry other)`
`void`	`geometryChanged()`
`CircularArc`	`getArcN(int arcIndex)`	Returns the n-th circular arc making up the geometry
`double`	`getArea()`
`Geometry`	`getBoundary()`
`int`	`getBoundaryDimension()`
`Point`	`getCentroid()`
`double[]`	`getControlPoints()`	Returns the control points for this string/ring.
`Coordinate`	`getCoordinate()`
`Coordinate`	`getCoordinateN(int n)`
`Coordinate[]`	`getCoordinates()`
`int`	`getCoordinatesDimension()`	Returns the dimension of the geometry without forcing access to the coordinate sequence
`CoordinateSequence`	`getCoordinateSequence()`
`int`	`getDimension()`
`Point`	`getEndPoint()`
`Geometry`	`getEnvelope()`
`Envelope`	`getEnvelopeInternal()`
`GeometryFactory`	`getFactory()`
`Geometry`	`getGeometryN(int n)`
`String`	`getGeometryType()`
`Point`	`getInteriorPoint()`
`double`	`getLength()`
`CoordinateSequence`	`getLinearizedCoordinateSequence(double tolerance)`	Returns the linearized coordinates at the given tolerance
`int`	`getNumArcs()`	Number of arc circles
`int`	`getNumGeometries()`
`int`	`getNumPoints()`
`Point`	`getPointN(int n)`
`PrecisionModel`	`getPrecisionModel()`
`int`	`getSRID()`
`Point`	`getStartPoint()`
`double`	`getTolerance()`	The default linearization tolerance
`Object`	`getUserData()`
`int`	`hashCode()`
`Geometry`	`intersection(Geometry other)`
`boolean`	`intersects(Geometry g)`
`boolean`	`isClosed()`
`boolean`	`isCoordinate(Coordinate pt)`
`boolean`	`isEmpty()`
`boolean`	`isRectangle()`
`boolean`	`isRing()`
`boolean`	`isSimple()`
`boolean`	`isValid()`
`boolean`	`isWithinDistance(Geometry geom, double distance)`
`LineString`	`linearize()`	Linearizes the geometry using the built-in linearization tolerance
`LineString`	`linearize(double tolerance)`	Linearizes the geometry using the provided tolerance, the result is guaranteed to be less than tolerance away from the curved geometry unless the number of points needed to linearize the geometry exceeds the build-in per quadrant maximum, see `CircularArc.MAX_SEGMENTS_QUADRANT`
`Geometry`	`norm()`
`void`	`normalize()`
`boolean`	`overlaps(Geometry g)`
`IntersectionMatrix`	`relate(Geometry g)`
`boolean`	`relate(Geometry g, String intersectionPattern)`
`CircularString`	`reverse()`
`protected CircularString`	`reverseInternal()`
`void`	`setSRID(int SRID)`
`void`	`setUserData(Object userData)`
`Geometry`	`symDifference(Geometry other)`
`String`	`toCurvedText()`	Parallel method to `Geometry.toText()` that will output the geometry as curved instead of as linear
`String`	`toString()`
`String`	`toText()`
`boolean`	`touches(Geometry g)`
`Geometry`	`union()`
`Geometry`	`union(Geometry other)`
`boolean`	`within(Geometry g)`

Methods inherited from class LineString
clone, compareToSameClass, compareToSameClass, getTypeCode, isEquivalentClass

Methods inherited from class Geometry
compare, copy, equal, geometryChangedAction, hasNonEmptyElements, hasNullElements, isGeometryCollection

Methods inherited from class Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - CircularString
```
public CircularString(CoordinateSequence points,
                      GeometryFactory factory,
                      double tolerance)
```
  - CircularString
```
public CircularString(double[] controlPoints,
                      GeometryFactory factory,
                      double tolerance)
```
- Method Detail
  - getControlPoints
```
public double[] getControlPoints()
```
    Description copied from interface: SingleCurvedGeometry
    
    Returns the control points for this string/ring.
    
    Specified by:
    
    getControlPoints in interface SingleCurvedGeometry<LineString>
  - getTolerance
```
public double getTolerance()
```
    Description copied from interface: CurvedGeometry
    
    The default linearization tolerance
    
    Specified by:
    
    getTolerance in interface CurvedGeometry<LineString>
  - getNumArcs
```
public int getNumArcs()
```
    Description copied from interface: SingleCurvedGeometry
    
    Number of arc circles
    
    Specified by:
    
    getNumArcs in interface SingleCurvedGeometry<LineString>
  - getArcN
```
public CircularArc getArcN(int arcIndex)
```
    Description copied from interface: SingleCurvedGeometry
    
    Returns the n-th circular arc making up the geometry
    
    Specified by:
    
    getArcN in interface SingleCurvedGeometry<LineString>
  - linearize
```
public LineString linearize()
```
    Description copied from interface: CurvedGeometry
    
    Linearizes the geometry using the built-in linearization tolerance
    
    Specified by:
    
    linearize in interface CurvedGeometry<LineString>
  - linearize
```
public LineString linearize(double tolerance)
```
    Description copied from interface: CurvedGeometry
    
    Linearizes the geometry using the provided tolerance, the result is guaranteed to be less than tolerance away from the curved geometry unless the number of points needed to linearize the geometry exceeds the build-in per quadrant maximum, see CircularArc.MAX_SEGMENTS_QUADRANT
    
    Specified by:
    
    linearize in interface CurvedGeometry<LineString>
    
    Parameters:
    
    tolerance - Linearization tolerance, should be zero or positive. When zero is used, the maximum number of allowed linearization points will be used, see CircularArc.MAX_SEGMENTS_QUADRANT
  - getLinearizedCoordinateSequence
```
public CoordinateSequence getLinearizedCoordinateSequence(double tolerance)
```
    Description copied from interface: SingleCurvedGeometry
    
    Returns the linearized coordinates at the given tolerance
    
    Specified by:
    
    getLinearizedCoordinateSequence in interface SingleCurvedGeometry<LineString>
  - isClosed
```
public boolean isClosed()
```
    Overrides:
    
    isClosed in class LineString
  - getDimension
```
public int getDimension()
```
    Overrides:
    
    getDimension in class LineString
  - getBoundaryDimension
```
public int getBoundaryDimension()
```
    Overrides:
    
    getBoundaryDimension in class LineString
  - isEmpty
```
public boolean isEmpty()
```
    Overrides:
    
    isEmpty in class LineString
  - getGeometryType
```
public String getGeometryType()
```
    Overrides:
    
    getGeometryType in class LineString
  - reverse
```
public CircularString reverse()
```
    Overrides:
    
    reverse in class LineString
  - reverseInternal
```
protected CircularString reverseInternal()
```
    Overrides:
    
    reverseInternal in class LineString
  - getInteriorPoint
```
public Point getInteriorPoint()
```
    Overrides:
    
    getInteriorPoint in class Geometry
  - getEnvelope
```
public Geometry getEnvelope()
```
    Overrides:
    
    getEnvelope in class Geometry
  - getEnvelopeInternal
```
public Envelope getEnvelopeInternal()
```
    Overrides:
    
    getEnvelopeInternal in class Geometry
  - computeEnvelopeInternal
```
protected Envelope computeEnvelopeInternal()
```
    Overrides:
    
    computeEnvelopeInternal in class LineString
  - getNumGeometries
```
public int getNumGeometries()
```
    Overrides:
    
    getNumGeometries in class Geometry
  - getGeometryN
```
public Geometry getGeometryN(int n)
```
    Overrides:
    
    getGeometryN in class Geometry
  - setUserData
```
public void setUserData(Object userData)
```
    Overrides:
    
    setUserData in class Geometry
  - getSRID
```
public int getSRID()
```
    Overrides:
    
    getSRID in class Geometry
  - setSRID
```
public void setSRID(int SRID)
```
    Overrides:
    
    setSRID in class Geometry
  - getFactory
```
public GeometryFactory getFactory()
```
    Overrides:
    
    getFactory in class Geometry
  - getUserData
```
public Object getUserData()
```
    Overrides:
    
    getUserData in class Geometry
  - getPrecisionModel
```
public PrecisionModel getPrecisionModel()
```
    Overrides:
    
    getPrecisionModel in class Geometry
  - isRectangle
```
public boolean isRectangle()
```
    Overrides:
    
    isRectangle in class Geometry
  - equalsExact
```
public boolean equalsExact(Geometry other)
```
    Overrides:
    
    equalsExact in class Geometry
  - equalsExact
```
public boolean equalsExact(Geometry other,
                           double tolerance)
```
    Overrides:
    
    equalsExact in class LineString
  - equals
```
public boolean equals(Geometry other)
```
    Overrides:
    
    equals in class Geometry
  - equalsTopo
```
public boolean equalsTopo(Geometry other)
```
    Overrides:
    
    equalsTopo in class Geometry
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Geometry
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Geometry
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Geometry
  - toCurvedText
```
public String toCurvedText()
```
    Description copied from interface: CurvedGeometry
    
    Parallel method to Geometry.toText() that will output the geometry as curved instead of as linear
    
    Specified by:
    
    toCurvedText in interface CurvedGeometry<LineString>
  - equalsNorm
```
public boolean equalsNorm(Geometry g)
```
    Overrides:
    
    equalsNorm in class Geometry
  - getPointN
```
public Point getPointN(int n)
```
    Overrides:
    
    getPointN in class LineString
  - getStartPoint
```
public Point getStartPoint()
```
    Overrides:
    
    getStartPoint in class LineString
  - getEndPoint
```
public Point getEndPoint()
```
    Overrides:
    
    getEndPoint in class LineString
  - getCoordinates
```
public Coordinate[] getCoordinates()
```
    Overrides:
    
    getCoordinates in class LineString
  - getCoordinateSequence
```
public CoordinateSequence getCoordinateSequence()
```
    Overrides:
    
    getCoordinateSequence in class LineString
  - getCoordinateN
```
public Coordinate getCoordinateN(int n)
```
    Overrides:
    
    getCoordinateN in class LineString
  - getCoordinate
```
public Coordinate getCoordinate()
```
    Overrides:
    
    getCoordinate in class LineString
  - getNumPoints
```
public int getNumPoints()
```
    Overrides:
    
    getNumPoints in class LineString
  - isRing
```
public boolean isRing()
```
    Overrides:
    
    isRing in class LineString
  - getLength
```
public double getLength()
```
    Overrides:
    
    getLength in class LineString
  - getBoundary
```
public Geometry getBoundary()
```
    Overrides:
    
    getBoundary in class LineString
  - isCoordinate
```
public boolean isCoordinate(Coordinate pt)
```
    Overrides:
    
    isCoordinate in class LineString
  - apply
```
public void apply(CoordinateFilter filter)
```
    Overrides:
    
    apply in class LineString
  - apply
```
public void apply(CoordinateSequenceFilter filter)
```
    Overrides:
    
    apply in class LineString
  - apply
```
public void apply(GeometryFilter filter)
```
    Overrides:
    
    apply in class LineString
  - apply
```
public void apply(GeometryComponentFilter filter)
```
    Overrides:
    
    apply in class LineString
  - copyInternal
```
protected CircularString copyInternal()
```
    Overrides:
    
    copyInternal in class LineString
  - normalize
```
public void normalize()
```
    Overrides:
    
    normalize in class LineString
  - isSimple
```
public boolean isSimple()
```
    Overrides:
    
    isSimple in class Geometry
  - isValid
```
public boolean isValid()
```
    Overrides:
    
    isValid in class Geometry
  - distance
```
public double distance(Geometry g)
```
    Overrides:
    
    distance in class Geometry
  - isWithinDistance
```
public boolean isWithinDistance(Geometry geom,
                                double distance)
```
    Overrides:
    
    isWithinDistance in class Geometry
  - getArea
```
public double getArea()
```
    Overrides:
    
    getArea in class Geometry
  - getCentroid
```
public Point getCentroid()
```
    Overrides:
    
    getCentroid in class Geometry
  - geometryChanged
```
public void geometryChanged()
```
    Overrides:
    
    geometryChanged in class Geometry
  - disjoint
```
public boolean disjoint(Geometry g)
```
    Overrides:
    
    disjoint in class Geometry
  - touches
```
public boolean touches(Geometry g)
```
    Overrides:
    
    touches in class Geometry
  - intersects
```
public boolean intersects(Geometry g)
```
    Overrides:
    
    intersects in class Geometry
  - crosses
```
public boolean crosses(Geometry g)
```
    Overrides:
    
    crosses in class Geometry
  - within
```
public boolean within(Geometry g)
```
    Overrides:
    
    within in class Geometry
  - contains
```
public boolean contains(Geometry g)
```
    Overrides:
    
    contains in class Geometry
  - overlaps
```
public boolean overlaps(Geometry g)
```
    Overrides:
    
    overlaps in class Geometry
  - covers
```
public boolean covers(Geometry g)
```
    Overrides:
    
    covers in class Geometry
  - coveredBy
```
public boolean coveredBy(Geometry g)
```
    Overrides:
    
    coveredBy in class Geometry
  - relate
```
public boolean relate(Geometry g,
                      String intersectionPattern)
```
    Overrides:
    
    relate in class Geometry
  - relate
```
public IntersectionMatrix relate(Geometry g)
```
    Overrides:
    
    relate in class Geometry
  - buffer
```
public Geometry buffer(double distance)
```
    Overrides:
    
    buffer in class Geometry
  - buffer
```
public Geometry buffer(double distance,
                       int quadrantSegments)
```
    Overrides:
    
    buffer in class Geometry
  - buffer
```
public Geometry buffer(double distance,
                       int quadrantSegments,
                       int endCapStyle)
```
    Overrides:
    
    buffer in class Geometry
  - convexHull
```
public Geometry convexHull()
```
    Overrides:
    
    convexHull in class Geometry
  - intersection
```
public Geometry intersection(Geometry other)
```
    Overrides:
    
    intersection in class Geometry
  - union
```
public Geometry union(Geometry other)
```
    Overrides:
    
    union in class Geometry
  - difference
```
public Geometry difference(Geometry other)
```
    Overrides:
    
    difference in class Geometry
  - symDifference
```
public Geometry symDifference(Geometry other)
```
    Overrides:
    
    symDifference in class Geometry
  - union
```
public Geometry union()
```
    Overrides:
    
    union in class Geometry
  - norm
```
public Geometry norm()
```
    Overrides:
    
    norm in class Geometry
  - compareTo
```
public int compareTo(Object o)
```
    Specified by:
    
    compareTo in interface Comparable
    
    Overrides:
    
    compareTo in class Geometry
  - compareTo
```
public int compareTo(Object o,
                     CoordinateSequenceComparator comp)
```
    Overrides:
    
    compareTo in class Geometry
  - toText
```
public String toText()
```
    Overrides:
    
    toText in class Geometry
  - getCoordinatesDimension
```
public int getCoordinatesDimension()
```
    Description copied from interface: CurvedGeometry
    
    Returns the dimension of the geometry without forcing access to the coordinate sequence
    
    Specified by:
    
    getCoordinatesDimension in interface CurvedGeometry<LineString>

Class CircularString

Field Summary

Fields inherited from class LineString

Fields inherited from class Geometry

Constructor Summary

Method Summary

Methods inherited from class LineString

Methods inherited from class Geometry

Methods inherited from class Object

Constructor Detail

CircularString

CircularString

Method Detail

getControlPoints

getTolerance

getNumArcs

getArcN

linearize

linearize

getLinearizedCoordinateSequence

isClosed

getDimension

getBoundaryDimension

isEmpty

getGeometryType

reverse

reverseInternal

getInteriorPoint

getEnvelope

getEnvelopeInternal

computeEnvelopeInternal

getNumGeometries

getGeometryN

setUserData

getSRID

setSRID

getFactory

getUserData

getPrecisionModel

isRectangle

equalsExact

equalsExact

equals

equalsTopo

equals

hashCode

toString

toCurvedText

equalsNorm

getPointN

getStartPoint

getEndPoint

getCoordinates

getCoordinateSequence

getCoordinateN

getCoordinate

getNumPoints

isRing

getLength

getBoundary

isCoordinate

apply

apply

apply

apply

copyInternal

normalize

isSimple

isValid

distance

isWithinDistance

getArea

getCentroid

geometryChanged

disjoint

touches

intersects

crosses

within

contains