Package hec.map.aishape

Class AiShapePolygon

java.lang.Object

hec.map.aishape.AiShapeObject

hec.map.aishape.AiShapePolygon

All Implemented Interfaces:

AiShapeConst, ImportObject, ImportPolygon, Serializable

Direct Known Subclasses:

AiShapePolygonM, AiShapePolygonZ

public class AiShapePolygon
extends AiShapeObject
implements ImportPolygon

AiShapePolygon class replicates Arc Info Polygon shape type
September 1998

See Also:

• Serialized Form

Field Summary

Fields inherited from class hec.map.aishape.AiShapeObject

_contentLength, _contentRead, _index, _type

Fields inherited from interface hec.map.aishape.AiShapeConst

DEBUG, FILE_CODE, HIGHLIGHT_MODIFIER, QUERY_FLASH_LENGTH, SHAPE_TYPE_ARC, SHAPE_TYPE_MULTI_POINT, SHAPE_TYPE_NULL, SHAPE_TYPE_POINT, SHAPE_TYPE_POINT_M, SHAPE_TYPE_POINT_Z, SHAPE_TYPE_POLYGON, SHAPE_TYPE_POLYGON_M, SHAPE_TYPE_POLYGON_Z, SHAPE_TYPE_POLYLINE_M, SHAPE_TYPE_POLYLINE_Z, VERSION, XY_QUERY_TOLERANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
	AiShapePolygon()
protected	AiShapePolygon(int type)
	AiShapePolygon(int index, Vector worldRegions)

Method Summary

Modifier and Type	Method	Description
Object	clone()
boolean	contains(double tolerance, WorldPt wpt)	Checks if point is contained in AiShapePolygon shape.
int	contentByteLength()	Returns the number of bytes in the body of the shape.
boolean	equals(Object obj)
double	getArea()	Returns the area for this polygon.
WorldPt	getReferencePt()
Vector<WorldRegion>	getRegions()
boolean	insertPt(WorldPt wpt, double tol)	Checks if point is in one of the World region in AiShapePolygon, and adds it to the selected region.
int	readRecord(EndianInputStream input)
boolean	removePt(WorldPt wpt, double tol)	Checks if point is in one of the World region in AiShapePolygon, and removes it from the selected region.
void	writeRecord(EndianOutputStream output)

Methods inherited from class hec.map.aishape.AiShapeObject

getAttribute, getBytesRead, getExtent, getFields, getIndex, printFields, readBoundingBox, readRecordHeader, recordByteLength, setAttribute, writeBoundingBox, writeRecordHeader

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface hec.map.importer.ImportObject

getAttribute

Constructor Details

AiShapePolygon

public AiShapePolygon()

AiShapePolygon

protected AiShapePolygon(int type)

AiShapePolygon

public AiShapePolygon(int index,
 Vector worldRegions)
               throws SelfIntersectingPolygonException

Throws:

SelfIntersectingPolygonException

Method Details

getArea

public double getArea()

Returns the area for this polygon. It is computed by taking the enclosing area and subtracting all of the "holes". "Holes" are defined as areas that have a counter-clockwise rotation of points. The area computation for each sub polygon are defined in WorldRegion

Returns:

double

See Also:

• WorldRegion

contentByteLength

public int contentByteLength()

Returns the number of bytes in the body of the shape.

Specified by:

contentByteLength in class AiShapeObject

writeRecord

public void writeRecord(EndianOutputStream output)
                 throws IOException

Specified by:

writeRecord in class AiShapeObject

Throws:

IOException

readRecord

public int readRecord(EndianInputStream input)

Overrides:

readRecord in class AiShapeObject

getReferencePt

public WorldPt getReferencePt()

getRegions

public Vector<WorldRegion> getRegions()

Specified by:

getRegions in interface ImportPolygon

Returns:

contains

public boolean contains(double tolerance,
 WorldPt wpt)

Checks if point is contained in AiShapePolygon shape. This overrides WorldRegion contains() in that if the point lies inside an interior region (a hole) contains() returns false

Overrides:

contains in class AiShapeObject

insertPt

public boolean insertPt(WorldPt wpt,
 double tol)

Checks if point is in one of the World region in AiShapePolygon, and adds it to the selected region. In present form, add point to first region which is within tol

removePt

public boolean removePt(WorldPt wpt,
 double tol)

Checks if point is in one of the World region in AiShapePolygon, and removes it from the selected region. In present form, removes point from first region which is within tol

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException