com.esri.core.geometry

Class Polygon

java.lang.Object

com.esri.core.geometry.Geometry

com.esri.core.geometry.MultiVertexGeometry

com.esri.core.geometry.MultiPath

com.esri.core.geometry.Polygon

All Implemented Interfaces:

Serializable

public class Polygon
extends MultiPath
implements Serializable

A polygon is a collection of one or many interior or exterior rings.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Polygon.FillRule

Nested classes/interfaces inherited from class com.esri.core.geometry.Geometry

Geometry.GeometryAccelerationDegree, Geometry.GeometryType, Geometry.Type

Constructor Summary

Constructors

Constructor and Description
Polygon() Creates a polygon.
Polygon(VertexDescription vd)

Method Summary

Modifier and Type	Method and Description
double	calculateRingArea2D(int ringIndex) Calculates the ring area for this ring.
Geometry	createInstance() Creates an instance of an empty geometry of the same type.
boolean	equals(Object other) Returns TRUE when this geometry has exactly same type, properties, and coordinates as the other geometry.
long	estimateMemorySize() Returns an estimate of this object size in bytes.
int	getDimension() Returns the topological dimension of the geometry object based on the geometry's type.
int	getExteriorRingCount()
int	getFillRule() Fill rule for the polygon that defines the interior of the self intersecting polygon.
Geometry.Type	getType() Returns the geometry type.
int	hashCode() Returns a hash code value for this polygon.
void	interpolateAttributes(int path_index, int from_point_index, int to_point_index)
void	interpolateAttributes(int semantics, int path_index, int from_point_index, int to_point_index)
boolean	isExteriorRing(int partIndex) Returns TRUE if the ring is an exterior ring.
void	setFillRule(int rule) Fill rule for the polygon that defines the interior of the self intersecting polygon.
void	setXY(int i, double x, double y) Sets a new vertex for the polygon.

Methods inherited from class com.esri.core.geometry.MultiPath

_getImpl, add, addAttribute, addEnvelope, addEnvelope, addPath, addSegment, addSegmentsFromPath, applyTransformation, assignVertexDescription, calculateArea2D, calculateLength2D, calculatePathLength2D, closeAllPaths, closePathWithLine, copyTo, dropAllAttributes, dropAttribute, getAttributeAsDbl, getAttributeAsInt, getBoundary, getDescription, getPathCount, getPathEnd, getPathIndexFromPointIndex, getPathSize, getPathStart, getPoint, getPointByVal, getPointCount, getSegmentCount, getSegmentCount, getStateFlag, getXY, getXY, insertPath, insertPoint, insertPoints, isClosedPath, isClosedPathInXYPlane, isEmpty, lineTo, lineTo, mergeVertexDescription, queryCoordinates, queryCoordinates, queryCoordinates, queryEnvelope, queryEnvelope2D, queryInterval, queryLooseEnvelope, queryPathEnvelope2D, querySegmentIterator, querySegmentIteratorAtVertex, removePath, removePoint, replaceNaNs, reverseAllPaths, reversePath, setAttribute, setAttribute, setEmpty, setPoint, setPointByVal, setXY, startPath, startPath

Methods inherited from class com.esri.core.geometry.MultiVertexGeometry

_assignVertexDescriptionImpl, getCoordinates2D, getPoint

Methods inherited from class com.esri.core.geometry.Geometry

addID, addM, copy, estimateMemorySize, getDimensionFromType, hasAttribute, hasID, hasM, hasZ, isArea, isLinear, isMultiPath, isMultiVertex, isPoint, isSegment, queryLooseEnvelope2D, toString, vertex_count

Methods inherited from class java.lang.Object

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

Constructor Detail

Polygon

public Polygon()

Creates a polygon.

Polygon

public Polygon(VertexDescription vd)

Method Detail

createInstance

public Geometry createInstance()

Description copied from class: Geometry

Creates an instance of an empty geometry of the same type.

Specified by:

createInstance in class Geometry

Returns:

The new instance.

getDimension

public int getDimension()

Description copied from class: Geometry

Returns the topological dimension of the geometry object based on the geometry's type.

Returns 0 for point and multipoint.

Returns 1 for lines and polylines.

Returns 2 for polygons and envelopes

Returns 3 for objects with volume

Specified by:

getDimension in class Geometry

Returns:

Returns the integer value of the dimension of geometry.

getType

public Geometry.Type getType()

Description copied from class: Geometry

Returns the geometry type.

Specified by:

getType in class Geometry

Returns:

Returns the geometry type.

estimateMemorySize

public long estimateMemorySize()

Description copied from class: Geometry

Returns an estimate of this object size in bytes.

This estimate doesn't include the size of the VertexDescription object because instances of VertexDescription are shared among geometry objects.

Specified by:

estimateMemorySize in class Geometry

Returns:

Returns an estimate of this object size in bytes.

calculateRingArea2D

public double calculateRingArea2D(int ringIndex)

Calculates the ring area for this ring.

Parameters:

ringIndex - The index of this ring.

Returns:

The ring area for this ring.

isExteriorRing

public boolean isExteriorRing(int partIndex)

Returns TRUE if the ring is an exterior ring. Valid only for simple polygons.

equals

public boolean equals(Object other)

Returns TRUE when this geometry has exactly same type, properties, and coordinates as the other geometry.

Overrides:

equals in class Object

hashCode

public int hashCode()

Returns a hash code value for this polygon.

Overrides:

hashCode in class MultiPath

setXY

public void setXY(int i,
                  double x,
                  double y)

Sets a new vertex for the polygon.

Parameters:

i - The index of the new vertex.

x - The X coordinate for the new vertex.

y - The Y coordinate for the new vertex.

interpolateAttributes

public void interpolateAttributes(int path_index,
                                  int from_point_index,
                                  int to_point_index)

interpolateAttributes

public void interpolateAttributes(int semantics,
                                  int path_index,
                                  int from_point_index,
                                  int to_point_index)

getExteriorRingCount

public int getExteriorRingCount()

setFillRule

public void setFillRule(int rule)

Fill rule for the polygon that defines the interior of the self intersecting polygon. It affects the Simplify operation. Can be use by drawing code to pass around the fill rule of graphic path. This property is not persisted in any format yet. See also Polygon.FillRule.

getFillRule

public int getFillRule()

Fill rule for the polygon that defines the interior of the self intersecting polygon. It affects the Simplify operation. Changing the fill rule on the polygon that has no self intersections has no physical effect. Can be use by drawing code to pass around the fill rule of graphic path. This property is not persisted in any format yet. See also Polygon.FillRule.