public class GeometryCollection extends Geometry
Geometry
s of
arbitrary type and dimension.Constructor and Description 

GeometryCollection(Geometry[] geometries,
GeometryFactory factory) 
GeometryCollection(Geometry[] geometries,
PrecisionModel precisionModel,
int SRID)
Deprecated.
Use GeometryFactory instead

Modifier and Type  Method and Description 

void 
apply(CoordinateFilter filter)
Performs an operation with or on this
Geometry 's
coordinates. 
void 
apply(CoordinateSequenceFilter filter)
Performs an operation on the coordinates in this
Geometry 's
CoordinateSequence s. 
void 
apply(GeometryComponentFilter filter)
Performs an operation with or on this Geometry and its
component Geometry's.

void 
apply(GeometryFilter filter)
Performs an operation with or on this
Geometry and its
subelement Geometry s (if any). 
Object 
clone()
Deprecated.

boolean 
equalsExact(Geometry other,
double tolerance)
Returns true if the two
Geometry s are exactly equal,
up to a specified distance tolerance. 
double 
getArea()
Returns the area of this
GeometryCollection 
Geometry 
getBoundary()
Returns the boundary, or an empty geometry of appropriate dimension
if this
Geometry is empty. 
int 
getBoundaryDimension()
Returns the dimension of this
Geometry s inherent boundary. 
Coordinate 
getCoordinate()
Returns a vertex of this
Geometry
(usually, but not necessarily, the first one). 
Coordinate[] 
getCoordinates()
Collects all coordinates of all subgeometries into an Array.

int 
getDimension()
Returns the dimension of this geometry.

Geometry 
getGeometryN(int n)
Returns an element
Geometry from a GeometryCollection
(or this , if the geometry is not a collection). 
String 
getGeometryType()
Returns the name of this Geometry's actual class.

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). 
int 
getNumPoints()
Returns the count of this
Geometry s vertices. 
boolean 
isEmpty()
Tests whether the set of points covered by this
Geometry is
empty. 
void 
normalize()
Converts this
Geometry to normal form (or
canonical form ). 
Geometry 
reverse()
Creates a
GeometryCollection with
every component reversed. 
buffer, buffer, buffer, compareTo, compareTo, contains, convexHull, copy, coveredBy, covers, crosses, difference, disjoint, distance, equals, equals, equalsExact, equalsNorm, equalsTopo, geometryChanged, getCentroid, getEnvelope, getEnvelopeInternal, getFactory, getInteriorPoint, getPrecisionModel, getSRID, getUserData, hashCode, intersection, intersects, isRectangle, isSimple, isValid, isWithinDistance, norm, overlaps, relate, relate, setSRID, setUserData, symDifference, toString, toText, touches, union, union, within
public GeometryCollection(Geometry[] geometries, PrecisionModel precisionModel, int SRID)
public GeometryCollection(Geometry[] geometries, GeometryFactory factory)
geometries
 the Geometry
s for this GeometryCollection
,
or null
or an empty array to create the empty
geometry. Elements may be empty Geometry
s,
but not null
s.public Coordinate getCoordinate()
Geometry
Geometry
(usually, but not necessarily, the first one).
The returned coordinate should not be assumed
to be an actual Coordinate object used in
the internal representation.getCoordinate
in class Geometry
Coordinate
which is a vertex of this Geometry
.public Coordinate[] getCoordinates()
getCoordinates
in class Geometry
Geometry.geometryChanged()
,
CoordinateSequence.setOrdinate(int, int, double)
public boolean isEmpty()
Geometry
Geometry
is
empty.public int getDimension()
Geometry
Note that this is a different concept to the dimension of
the vertex Coordinate
s.
The geometry dimension can never be greater than the coordinate dimension.
For example, a 0dimensional geometry (e.g. a Point)
may have a coordinate dimension of 3 (X,Y,Z).
getDimension
in class Geometry
public int getBoundaryDimension()
Geometry
Geometry
s inherent boundary.getBoundaryDimension
in class Geometry
Dimension.FALSE
if the boundary is the empty geometry.public int getNumGeometries()
Geometry
Geometry
s in a GeometryCollection
(or 1, if the geometry is not a collection).getNumGeometries
in class Geometry
public Geometry getGeometryN(int n)
Geometry
Geometry
from a GeometryCollection
(or this
, if the geometry is not a collection).getGeometryN
in class Geometry
n
 the index of the geometry elementpublic int getNumPoints()
Geometry
Geometry
s vertices. The Geometry
s contained by composite Geometry
s must be
Geometry's; that is, they must implement getNumPoints
getNumPoints
in class Geometry
Geometry
public String getGeometryType()
Geometry
getGeometryType
in class Geometry
Geometry
s actual classpublic Geometry getBoundary()
Geometry
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."getBoundary
in class Geometry
Geometry
public double getArea()
GeometryCollection
public double getLength()
Geometry
Geometry
.
Linear geometries return their length.
Areal geometries return their perimeter.
They override this function to compute the area.
Others return 0.0public boolean equalsExact(Geometry other, double tolerance)
Geometry
Geometry
s are exactly equal,
up to a specified distance tolerance.
Two Geometries are exactly equal within a distance tolerance
if and only if:
GeometryFactory
, the SRID
,
or the userData
fields.
To properly test equality between different geometries,
it is usually necessary to Geometry.normalize()
them first.
equalsExact
in class Geometry
other
 the Geometry
with which to compare this Geometry
tolerance
 distance at or below which two Coordinate
s
are considered equaltrue
if this and the other Geometry
have identical structure and point values, up to the distance tolerance.Geometry.equalsExact(Geometry)
,
Geometry.normalize()
,
Geometry.norm()
public void apply(CoordinateFilter filter)
Geometry
Geometry
's
coordinates.
If this method modifies any coordinate values,
Geometry.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 Coordinate objects at all).public void apply(CoordinateSequenceFilter filter)
Geometry
Geometry
's
CoordinateSequence
s.
If the filter reports that a coordinate value has been changed,
Geometry.geometryChanged()
will be called automatically.public void apply(GeometryFilter filter)
Geometry
Geometry
and its
subelement Geometry
s (if any).
Only GeometryCollections and subclasses
have subelement Geometry's.public void apply(GeometryComponentFilter filter)
Geometry
public Object clone()
GeometryCollection
object.
(including all coordinates contained by it).public void normalize()
Geometry
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.
NOTE that this method mutates the value of this geometry inplace. If this is not safe and/or wanted, the geometry should be cloned prior to normalization.
public Geometry reverse()
GeometryCollection
with
every component reversed.
The order of the components in the collection are not reversed.reverse
in class Geometry
GeometryCollection
in the reverse orderCopyright © 2019. All rights reserved.