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java.lang.Object com.vividsolutions.jts.geom.Geometry
The base class for all geometric objects.
GeometryCollection
s would be useful,
GeometryCollection
s are not supported as arguments to binary
predicates (other than convexHull
) or the relate
method.
Point
, LineString
, or
Polygon
will be returned if the result contains a single
element; otherwise, a MultiPoint
, MultiLineString
,
or MultiPolygon
will be returned. If the result is
heterogeneous a GeometryCollection
will be returned.
Because it is not clear at this time what semantics for settheoretic
methods involving GeometryCollection
s would be useful,
GeometryCollections
are not supported as arguments to the settheoretic methods.
Geometry
.
The SFS does not specify an unambiguous representation of a given point set
returned from a spatial analysis method. One goal of JTS is to make this
specification precise and unambiguous. JTS will use a canonical form for
Geometry
s returned from spatial analysis methods. The canonical
form is a Geometry
which is simple and noded:
isSimple
.
LineString
s. It
means that all intersection points on LineString
s will be
present as endpoints of LineString
s in the result.
Geometry
s. These new points arise from intersections between line segments in the
edges of the input Geometry
s. In the general case it is not
possible to represent constructed points exactly. This is due to the fact
that the coordinates of an intersection point may contain twice as many bits
of precision as the coordinates of the input line segments. In order to
represent these constructed points explicitly, JTS must truncate them to fit
the PrecisionModel
. Unfortunately, truncating coordinates moves them slightly. Line segments which would not be coincident in the exact result may become coincident in the truncated representation. This in turn leads to "topology collapses"  situations where a computed element has a lower dimension than it would in the exact result.
When JTS detects topology collapses during the computation of spatial analysis methods, it will throw an exception. If possible the exception will report the location of the collapse.
#equals(Object) and #hashCode are not overridden, so that when two topologically equal Geometries are added to HashMaps and HashSets, they remain distinct. This behaviour is desired in many cases.
Field Summary  
protected Envelope 
envelope
The bounding box of this Geometry . 
protected GeometryFactory 
factory
The GeometryFactory used to create this Geometry 
protected int 
SRID
The ID of the Spatial Reference System used by this Geometry 
Constructor Summary  
Geometry(GeometryFactory factory)
Creates a new Geometry via the specified GeometryFactory. 
Method Summary  
abstract void 
apply(CoordinateFilter filter)
Performs an operation with or on this Geometry 's
coordinates. 
abstract void 
apply(CoordinateSequenceFilter filter)
Performs an operation on the coordinates in this Geometry 's
CoordinateSequence s. 
abstract void 
apply(GeometryComponentFilter filter)
Performs an operation with or on this Geometry and its component Geometry's. 
abstract void 
apply(GeometryFilter filter)
Performs an operation with or on this Geometry and its
subelement Geometry s (if any). 
Geometry 
buffer(double distance)
Computes a buffer area around this geometry having the given width. 
Geometry 
buffer(double distance,
int quadrantSegments)
Computes a buffer area around this geometry having the given width and with a specified accuracy of approximation for circular arcs. 
Geometry 
buffer(double distance,
int quadrantSegments,
int endCapStyle)
Computes a buffer area around this geometry having the given width and with a specified accuracy of approximation for circular arcs, and using a specified end cap style. 
protected void 
checkNotGeometryCollection(Geometry g)
Throws an exception if g 's class is GeometryCollection
. 
java.lang.Object 
clone()
Creates and returns a full copy of this Geometry object
(including all coordinates contained by it). 
protected int 
compare(java.util.Collection a,
java.util.Collection b)
Returns the first nonzero result of compareTo encountered as
the two Collection s are iterated over. 
int 
compareTo(java.lang.Object o)
Returns whether this Geometry is greater than, equal to,
or less than another Geometry . 
int 
compareTo(java.lang.Object o,
CoordinateSequenceComparator comp)
Returns whether this Geometry is greater than, equal to,
or less than another Geometry ,
using the given CoordinateSequenceComparator . 
protected abstract int 
compareToSameClass(java.lang.Object o)
Returns whether this Geometry is greater than, equal to,
or less than another Geometry having the same class. 
protected abstract int 
compareToSameClass(java.lang.Object o,
CoordinateSequenceComparator comp)
Returns whether this Geometry is greater than, equal to,
or less than another Geometry of the same class. 
protected abstract Envelope 
computeEnvelopeInternal()
Returns the minimum and maximum x and y values in this Geometry
, or a null Envelope if this Geometry is empty. 
boolean 
contains(Geometry g)
Returns true if this geometry contains the
specified geometry. 
Geometry 
convexHull()
Computes the smallest convex Polygon that contains all the
points in the Geometry . 
boolean 
coveredBy(Geometry g)
Returns true if this geometry is covered by the
specified geometry. 
boolean 
covers(Geometry g)
Returns true if this geometry covers the
specified geometry. 
boolean 
crosses(Geometry g)
Returns true if this geometry crosses the
specified geometry. 
Geometry 
difference(Geometry other)
Computes a Geometry representing the points making up this
Geometry that do not make up other . 
boolean 
disjoint(Geometry g)
Returns true if this geometry is disjoint to the specified geometry. 
double 
distance(Geometry g)
Returns the minimum distance between this Geometry
and the Geometry g 
protected boolean 
equal(Coordinate a,
Coordinate b,
double tolerance)

boolean 
equals(Geometry g)
Returns true if this geometry is equal to the
specified geometry. 
boolean 
equalsExact(Geometry other)
Returns true if the two Geometry s are exactly equal. 
abstract boolean 
equalsExact(Geometry other,
double tolerance)
Returns true if the two Geometry s are exactly equal,
up to a specified distance tolerance. 
void 
geometryChanged()
Notifies this Geometry that its Coordinates have been changed by an external party (using a CoordinateFilter, for example). 
protected void 
geometryChangedAction()
Notifies this Geometry that its Coordinates have been changed by an external party. 
double 
getArea()
Returns the area of this Geometry . 
abstract Geometry 
getBoundary()
Returns the boundary, or an empty geometry of appropriate dimension if this Geometry is empty. 
abstract int 
getBoundaryDimension()
Returns the dimension of this Geometry s inherent boundary. 
Point 
getCentroid()
Computes the centroid of this Geometry . 
abstract Coordinate 
getCoordinate()
Returns a vertex of this Geometry . 
abstract Coordinate[] 
getCoordinates()
Returns this Geometry s vertices. 
abstract int 
getDimension()
Returns the dimension of this Geometry . 
Geometry 
getEnvelope()
Returns this Geometry s bounding box. 
Envelope 
getEnvelopeInternal()
Returns the minimum and maximum x and y values in this Geometry
, or a null Envelope if this Geometry is empty. 
GeometryFactory 
getFactory()
Gets the factory which contains the context in which this geometry was created. 
Geometry 
getGeometryN(int n)
Returns an element Geometry from a GeometryCollection
(or this , if the geometry is not a collection). 
abstract java.lang.String 
getGeometryType()
Returns the name of this object's com.vivid.jts.geom
interface. 
Point 
getInteriorPoint()
Computes an interior point of this Geometry . 
double 
getLength()
Returns the length of this Geometry . 
int 
getNumGeometries()
Returns the number of Geometry s in a GeometryCollection
(or 1, if the geometry is not a collection). 
abstract int 
getNumPoints()
Returns the count of this Geometry s vertices. 
PrecisionModel 
getPrecisionModel()
Returns the PrecisionModel used by the Geometry . 
int 
getSRID()
Returns the ID of the Spatial Reference System used by the Geometry . 
java.lang.Object 
getUserData()
Gets the user data object for this geometry, if any. 
protected static boolean 
hasNonEmptyElements(Geometry[] geometries)
Returns true if the array contains any nonempty Geometry s. 
protected static boolean 
hasNullElements(java.lang.Object[] array)
Returns true if the array contains any null elements. 
Geometry 
intersection(Geometry other)
Computes a Geometry representing the points shared by this
Geometry and other . 
boolean 
intersects(Geometry g)
Returns true if this geometry intersects the specified geometry. 
abstract boolean 
isEmpty()
Returns whether or not the set of points in this Geometry is
empty. 
protected boolean 
isEquivalentClass(Geometry other)
Returns whether the two Geometry s are equal, from the point
of view of the equalsExact method. 
boolean 
isRectangle()

boolean 
isSimple()
Tests whether this Geometry is simple. 
boolean 
isValid()
Tests the validity of this Geometry . 
boolean 
isWithinDistance(Geometry geom,
double distance)
Tests whether the distance from this Geometry
to another is less than or equal to a specified value. 
abstract void 
normalize()
Converts this Geometry to normal form (or
canonical form ). 
boolean 
overlaps(Geometry g)
Returns true if this geometry overlaps the
specified geometry. 
IntersectionMatrix 
relate(Geometry g)
Returns the DE9IM IntersectionMatrix for the two Geometry s. 
boolean 
relate(Geometry g,
java.lang.String intersectionPattern)
Returns true if the elements in the DE9IM
IntersectionMatrix for the two Geometry s match the elements in intersectionPattern . 
void 
setSRID(int SRID)
Sets the ID of the Spatial Reference System used by the Geometry . 
void 
setUserData(java.lang.Object userData)
A simple scheme for applications to add their own custom data to a Geometry. 
Geometry 
symDifference(Geometry other)
Returns a set combining the points in this Geometry not in
other , and the points in other not in this
Geometry . 
java.lang.String 
toString()

java.lang.String 
toText()
Returns the Wellknown Text representation of this Geometry . 
boolean 
touches(Geometry g)
Returns true if this geometry touches the
specified geometry. 
Geometry 
union(Geometry other)
Computes a Geometry representing all the points in this Geometry
and other . 
boolean 
within(Geometry g)
Returns true if this geometry is within the
specified geometry. 
Methods inherited from class java.lang.Object 
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait 
Field Detail 
protected Envelope envelope
Geometry
.
protected final GeometryFactory factory
GeometryFactory
used to create this Geometry
protected int SRID
Geometry
Constructor Detail 
public Geometry(GeometryFactory factory)
factory
 Method Detail 
public abstract java.lang.String getGeometryType()
com.vivid.jts.geom
interface.
Geometry
s most specific com.vividsolutions.jts.geom
interfaceprotected static boolean hasNonEmptyElements(Geometry[] geometries)
Geometry
s.
geometries
 an array of Geometry
s; no elements may be
null
true
if any of the Geometry
s
isEmpty
methods return false
protected static boolean hasNullElements(java.lang.Object[] array)
null
elements.
array
 an array to validate
true
if any of array
s elements are
null
public int getSRID()
Geometry
.
JTS supports Spatial Reference System information in the simple way
defined in the SFS. A Spatial Reference System ID (SRID) is present in
each Geometry
object. Geometry
provides basic
accessor operations for this field, but no others. The SRID is represented
as an integer.
Geometry
is defined.public void setSRID(int SRID)
Geometry
.
public GeometryFactory getFactory()
public java.lang.Object getUserData()
null
if none setpublic int getNumGeometries()
Geometry
s in a GeometryCollection
(or 1, if the geometry is not a collection).
public Geometry getGeometryN(int n)
Geometry
from a GeometryCollection
(or this
, if the geometry is not a collection).
n
 the index of the geometry element
public void setUserData(java.lang.Object userData)
Note that user data objects are not present in geometries created by construction methods.
userData
 an object, the semantics for which are defined by the
application using this Geometrypublic PrecisionModel getPrecisionModel()
PrecisionModel
used by the Geometry
.
Geometry
and all other Geometry
spublic abstract Coordinate getCoordinate()
Geometry
.
Coordinate
which is a vertex of this Geometry
.
Returns null
if this Geometry is emptypublic abstract Coordinate[] getCoordinates()
Geometry
s vertices. If you modify the coordinates
in this array, be sure to call #geometryChanged afterwards.
The Geometry
s contained by composite Geometry
s
must be Geometry's; that is, they must implement getCoordinates
.
Geometry
public abstract int getNumPoints()
Geometry
s vertices. The Geometry
s contained by composite Geometry
s must be
Geometry's; that is, they must implement getNumPoints
Geometry
public boolean isSimple()
Geometry
is simple.
In general, the SFS specification of simplicity
follows the rule:
Geometry
subclass as follows:
isSimple
trivially returns true.
Geometry
s are always simple
true
if this Geometry
has any points of
selftangency, selfintersection or other anomalous pointsisValid()
public boolean isValid()
Geometry
.
Subclasses provide their own definition of "valid".
true
if this Geometry
is validIsValidOp
public abstract boolean isEmpty()
Geometry
is
empty.
true
if this Geometry
equals the empty
geometrypublic double distance(Geometry g)
Geometry
and the Geometry
g
g
 the Geometry
from which to compute the distancepublic boolean isWithinDistance(Geometry geom, double distance)
Geometry
to another is less than or equal to a specified value.
geom
 the Geometry to check the distance todistance
 the distance value to compare
true
if the geometries are less than distance
apart.public boolean isRectangle()
public double getArea()
Geometry
.
Areal Geometries have a nonzero area.
They override this function to compute the area.
Others return 0.0
public double getLength()
Geometry
.
Linear geometries return their length.
Areal geometries return their perimeter.
They override this function to compute the area.
Others return 0.0
public Point getCentroid()
Geometry
.
The centroid
is equal to the centroid of the set of component Geometries of highest
dimension (since the lowerdimension geometries contribute zero
"weight" to the centroid)
Point
which is the centroid of this Geometrypublic Point getInteriorPoint()
Geometry
.
An interior point is guaranteed to lie in the interior of the Geometry,
if it possible to calculate such a point exactly. Otherwise,
the point may lie on the boundary of the geometry.
Point
which is in the interior of this Geometrypublic abstract int getDimension()
Geometry
.
public abstract Geometry getBoundary()
Geometry
is empty.
(In the case of zerodimensional geometries, '
an empty GeometryCollection is returned.)
For a discussion of this function, see the OpenGIS Simple
Features Specification. As stated in SFS Section 2.1.13.1, "the boundary
of a Geometry is a set of Geometries of the next lower dimension."
Geometry
public abstract int getBoundaryDimension()
Geometry
s inherent boundary.
Dimension.FALSE
if the boundary is the empty geometry.public Geometry getEnvelope()
Geometry
s bounding box. If this Geometry
is the empty geometry, returns an empty Point
. If the Geometry
is a point, returns a nonempty Point
. Otherwise, returns a
Polygon
whose points are (minx, miny), (maxx, miny), (maxx,
maxy), (minx, maxy), (minx, miny).
Point
(for empty Geometry
s), a
Point
(for Point
s) or a Polygon
(in all other cases)public Envelope getEnvelopeInternal()
Geometry
, or a null Envelope
if this Geometry
is empty.
Geometry
s bounding box; if the Geometry
is empty, Envelope#isNull
will return true
public void geometryChanged()
Envelope
).
protected void geometryChangedAction()
apply(GeometryComponentFilter)
public boolean disjoint(Geometry g)
true
if this geometry is disjoint to the specified geometry.
The disjoint
predicate has the following equivalent definitions:
g.intersects(this)
(disjoint
is the inverse of intersects
)
g
 the Geometry
with which to compare this Geometry
true
if the two Geometry
s are
disjointintersects(com.vividsolutions.jts.geom.Geometry)
public boolean touches(Geometry g)
true
if this geometry touches the
specified geometry.
The touches
predicate has the following equivalent definitions:
false
g
 the Geometry
with which to compare this Geometry
true
if the two Geometry
s touch;
Returns false
if both Geometry
s are pointspublic boolean intersects(Geometry g)
true
if this geometry intersects the specified geometry.
The intersects
predicate has the following equivalent definitions:
g.disjoint(this)
(intersects
is the inverse of disjoint
)
g
 the Geometry
with which to compare this Geometry
true
if the two Geometry
s intersectdisjoint(com.vividsolutions.jts.geom.Geometry)
public boolean crosses(Geometry g)
true
if this geometry crosses the
specified geometry.
The crosses
predicate has the following equivalent definitions:
false
.
The SFS defined this predicate only for P/L, P/A, L/L, and L/A situations. JTS extends the definition to apply to L/P, A/P and A/L situations as well. This makes the relation symmetric.
g
 the Geometry
with which to compare this Geometry
true
if the two Geometry
s cross.public boolean within(Geometry g)
true
if this geometry is within the
specified geometry.
The within
predicate has the following equivalent definitions:
g.contains(this)
(within
is the inverse of contains
)
G.within(P) = false
g
 the Geometry
with which to compare this Geometry
true
if this Geometry
is within
other
contains(com.vividsolutions.jts.geom.Geometry)
public boolean contains(Geometry g)
true
if this geometry contains the
specified geometry.
The contains
predicate has the following equivalent definitions:
T*****FF*
g.within(this)
(contains
is the inverse of within
)
P.contains(G) = false
g
 the Geometry
with which to compare this Geometry
true
if this Geometry
contains g
within(com.vividsolutions.jts.geom.Geometry)
public boolean overlaps(Geometry g)
true
if this geometry overlaps the
specified geometry.
The overlaps
predicate has the following equivalent definitions:
T*T***T**
(for two points or two surfaces)
or 1*T***T**
(for two curves)
false
.
g
 the Geometry
with which to compare this Geometry
true
if the two Geometry
s overlap.public boolean covers(Geometry g)
true
if this geometry covers the
specified geometry.
The covers
predicate has the following equivalent definitions:
T*****FF*
or *T****FF*
or ***T**FF*
or ****T*FF*
g.coveredBy(this)
(covers
is the inverse of coverdBy
)
covers
and contains
 covers
is a more inclusive relation.
In particular, unlike contains
it does not distinguish between
points in the boundary and in the interior of geometries.
For most situations, covers
should be used in preference to contains
.
As an added benefit, covers
is more amenable to optimization,
and hence should be more performant.
g
 the Geometry
with which to compare this Geometry
true
if this Geometry
covers g
contains(com.vividsolutions.jts.geom.Geometry)
,
coveredBy(com.vividsolutions.jts.geom.Geometry)
public boolean coveredBy(Geometry g)
true
if this geometry is covered by the
specified geometry.
The coveredBy
predicate has the following equivalent definitions:
T*F**F***
or *TF**F***
or **FT*F***
or **F*TF***
g.covers(this)
(coveredBy
is the inverse of covers
)
coveredBy
and within
 coveredBy
is a more inclusive relation.
g
 the Geometry
with which to compare this Geometry
true
if this Geometry
is covered by g
within(com.vividsolutions.jts.geom.Geometry)
,
covers(com.vividsolutions.jts.geom.Geometry)
public boolean relate(Geometry g, java.lang.String intersectionPattern)
true
if the elements in the DE9IM
IntersectionMatrix
for the two Geometry
s match the elements in intersectionPattern
.
The pattern is a 9character string, with symbols drawn from the following set:
intersectionPattern
 the pattern against which to check the
intersection matrix for the two Geometry
s
true
if the DE9IM intersection
matrix for the two Geometry
s match intersectionPattern
IntersectionMatrix
public IntersectionMatrix relate(Geometry g)
IntersectionMatrix
for the two Geometry
s.
IntersectionMatrix
describing the intersections of the interiors,
boundaries and exteriors of the two Geometry
spublic boolean equals(Geometry g)
true
if this geometry is equal to the
specified geometry.
The equals
predicate has the following equivalent definitions:
true
if the two Geometry
s are equalpublic java.lang.String toString()
public java.lang.String toText()
Geometry
.
For a definition of the Wellknown Text format, see the OpenGIS Simple
Features Specification.
Geometry
public Geometry buffer(double distance)
abs(distance)
.
The buffer is constructed using 8 segments per quadrant to represent curves.
The end cap style is CAP_ROUND.
distance
 the width of the buffer (may be positive, negative or 0)
TopologyException
 if a robustness error occursbuffer(double, int)
,
buffer(double, int, int)
public Geometry buffer(double distance, int quadrantSegments)
Buffer area boundaries can contain circular arcs.
To represent these arcs using linear geometry they must be approximated with line segments.
The quadrantSegments
argument allows controlling the
accuracy of the approximation
by specifying the number of line segments used to represent a quadrant of a circle
distance
 the width of the buffer (may be positive, negative or 0)quadrantSegments
 the number of line segments used to represent a quadrant of a circle
TopologyException
 if a robustness error occursbuffer(double)
,
buffer(double, int, int)
public Geometry buffer(double distance, int quadrantSegments, int endCapStyle)
Buffer area boundaries can contain circular arcs.
To represent these arcs using linear geometry they must be approximated with line segments.
The quadrantSegments
argument allows controlling the
accuracy of the approximation
by specifying the number of line segments used to represent a quadrant of a circle
The end cap style specifies the buffer geometry that will be created at the ends of linestrings. The styles provided are:
distance
 the width of the buffer (may be positive, negative or 0)quadrantSegments
 the number of line segments used to represent a quadrant of a circleendCapStyle
 the end cap style to use
TopologyException
 if a robustness error occursbuffer(double)
,
buffer(double, int)
,
BufferOp
public Geometry convexHull()
Polygon
that contains all the
points in the Geometry
. This obviously applies only to Geometry
s which contain 3 or more points; the results for degenerate cases are
specified as follows:
Number of Point s in argument Geometry 
Geometry class of result 

0  empty GeometryCollection 
1  Point 
2  LineString 
3 or more  Polygon 
Geometry
'
s pointspublic Geometry intersection(Geometry other)
Geometry
representing the points shared by this
Geometry
and other
.
other
 the Geometry
with which to compute the
intersection
Geometry
s
TopologyException
 if a robustness error occurs
java.lang.IllegalArgumentException
 if either input is a nonempty GeometryCollectionpublic Geometry union(Geometry other)
Geometry
representing all the points in this Geometry
and other
.
other
 the Geometry
with which to compute the union
Geometry
and
the points of other
TopologyException
 if a robustness error occurs
java.lang.IllegalArgumentException
 if either input is a nonempty GeometryCollectionpublic Geometry difference(Geometry other)
Geometry
representing the points making up this
Geometry
that do not make up other
. This method
returns the closure of the resultant Geometry
.
other
 the Geometry
with which to compute the
difference
Geometry
with
other
TopologyException
 if a robustness error occurs
java.lang.IllegalArgumentException
 if either input is a nonempty GeometryCollectionpublic Geometry symDifference(Geometry other)
Geometry
not in
other
, and the points in other
not in this
Geometry
. This method returns the closure of the resultant
Geometry
.
other
 the Geometry
with which to compute the symmetric
difference
Geometry
with other
TopologyException
 if a robustness error occurs
java.lang.IllegalArgumentException
 if either input is a nonempty GeometryCollectionpublic abstract boolean equalsExact(Geometry other, double tolerance)
Geometry
s are exactly equal,
up to a specified distance tolerance.
Two Geometries are exactly equal within a distance tolerance
if and only if:
Geometry
s are
composites and any children are not Geometry
s, returns
false
.
other
 the Geometry
with which to compare this Geometry
true
if this and the other Geometry
are of the same class and have equal internal data.public boolean equalsExact(Geometry other)
Geometry
s are exactly equal.
Two Geometries are exactly equal iff:
Geometry
s are
composites and any children are not Geometry
s, returns
false.
This provides a stricter test of equality than
equals
.
other
 the Geometry
with which to compare this Geometry
true
if this and the other Geometry
are of the same class and have equal internal data.public abstract void apply(CoordinateFilter filter)
Geometry
's
coordinates.
If this method modifies any coordinate values,
#geometryChanged() must be called to update the geometry state.
Note that you cannot use this
method to
modify this Geometry if its underlying CoordinateSequence's #get method
returns a copy of the Coordinate, rather than the actual Coordinate stored
(if it even stores Coordinates at all).
filter
 the filter to apply to this Geometry
's
coordinatespublic abstract void apply(CoordinateSequenceFilter filter)
Geometry
's
CoordinateSequence
s.
If this method modifies any coordinate values,
#geometryChanged() must be called to update the geometry state.
filter
 the filter to applypublic abstract void apply(GeometryFilter filter)
Geometry
and its
subelement Geometry
s (if any).
Only GeometryCollections and subclasses
have subelement Geometry's.
filter
 the filter to apply to this Geometry
(and
its children, if it is a GeometryCollection
).public abstract void apply(GeometryComponentFilter filter)
filter
 the filter to apply to this Geometry
.public java.lang.Object clone()
Geometry
object
(including all coordinates contained by it).
Subclasses are responsible for overriding this method and copying
their internal data. Overrides should call this method first.
public abstract void normalize()
Geometry
to normal form (or
canonical form ). Normal form is a unique representation for Geometry
s. It can be used to test whether two Geometry
s are equal
in a way that is independent of the ordering of the coordinates within
them. Normal form equality is a stronger condition than topological
equality, but weaker than pointwise equality. The definitions for normal
form use the standard lexicographical ordering for coordinates. "Sorted in
order of coordinates" means the obvious extension of this ordering to
sequences of coordinates.
public int compareTo(java.lang.Object o)
Geometry
is greater than, equal to,
or less than another Geometry
. If their classes are different, they are compared using the following ordering:
Geometry
s have the same class, their first
elements are compared. If those are the same, the second elements are
compared, etc.
compareTo
in interface java.lang.Comparable
o
 a Geometry
with which to compare this Geometry
o
, as
defined in "Normal Form For Geometry" in the JTS Technical
Specificationspublic int compareTo(java.lang.Object o, CoordinateSequenceComparator comp)
Geometry
is greater than, equal to,
or less than another Geometry
,
using the given CoordinateSequenceComparator
.
If their classes are different, they are compared using the following ordering:
Geometry
s have the same class, their first
elements are compared. If those are the same, the second elements are
compared, etc.
o
 a Geometry
with which to compare this Geometry
comp
 a CoordinateSequenceComparator
o
, as
defined in "Normal Form For Geometry" in the JTS Technical
Specificationsprotected boolean isEquivalentClass(Geometry other)
Geometry
s are equal, from the point
of view of the equalsExact
method. Called by equalsExact
. In general, two Geometry
classes are considered to be
"equivalent" only if they are the same class. An exception is LineString
, which is considered to be equivalent to its subclasses.
other
 the Geometry
with which to compare this Geometry
for equality
true
if the classes of the two Geometry
s are considered to be equal by the equalsExact
method.protected void checkNotGeometryCollection(Geometry g)
g
's class is GeometryCollection
. (Its subclasses do not trigger an exception).
g
 the Geometry
to check
java.lang.IllegalArgumentException
 if g
is a GeometryCollection
but not one of its subclassesprotected abstract Envelope computeEnvelopeInternal()
Geometry
, or a null Envelope
if this Geometry
is empty.
Unlike getEnvelopeInternal
, this method calculates the Envelope
each time it is called; getEnvelopeInternal
caches the result
of this method.
Geometry
s bounding box; if the Geometry
is empty, Envelope#isNull
will return true
protected abstract int compareToSameClass(java.lang.Object o)
Geometry
is greater than, equal to,
or less than another Geometry
having the same class.
o
 a Geometry
having the same class as this Geometry
o
, as
defined in "Normal Form For Geometry" in the JTS Technical
Specificationsprotected abstract int compareToSameClass(java.lang.Object o, CoordinateSequenceComparator comp)
Geometry
is greater than, equal to,
or less than another Geometry
of the same class.
using the given CoordinateSequenceComparator
.
o
 a Geometry
having the same class as this Geometry
comp
 a CoordinateSequenceComparator
o
, as
defined in "Normal Form For Geometry" in the JTS Technical
Specificationsprotected int compare(java.util.Collection a, java.util.Collection b)
compareTo
encountered as
the two Collection
s are iterated over. If, by the time one of
the iterations is complete, no nonzero result has been encountered,
returns 0 if the other iteration is also complete. If b
completes before a
, a positive number is returned; if a
before b, a negative number.
a
 a Collection
of Comparable
sb
 a Collection
of Comparable
s
compareTo
result, if any;
otherwise, zeroprotected boolean equal(Coordinate a, Coordinate b, double tolerance)


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