de.fhg.igd.earth.model.input.shapefile
Class ESRIPolygonRecord

java.lang.Object
  de.fhg.igd.earth.model.input.shapefile.ShapeUtils
      de.fhg.igd.earth.model.input.shapefile.ESRIRecord
          de.fhg.igd.earth.model.input.shapefile.ESRIPolygonRecord

public class ESRIPolygonRecord

extends ESRIRecord

Title : Earth Copyright : Copyright (c) 2001 Organisation : IGD FhG

Version:

: 1.0

Author:

: Werner Beutel

Field Summary

ESRIBoundingBox	bounds The bounding box.
ESRIPoly[]	polygons An array of polygons.
protected int	shapeType Polygon or arc/polyline?.

Fields inherited from class de.fhg.igd.earth.model.input.shapefile.ESRIRecord

contentLength, recordNumber

Fields inherited from class de.fhg.igd.earth.model.input.shapefile.ShapeUtils

SHAPE_FILE_HEADER_LENGTH, SHAPE_FILE_HEADER_LENGTH_DB, SHAPE_FILE_RECORD_HEADER_LENGTH, SHAPE_TYPE_ARC, SHAPE_TYPE_MULTIPOINT, SHAPE_TYPE_NULL, SHAPE_TYPE_POINT, SHAPE_TYPE_POLYGON, SHAPE_TYPE_POLYLINE

Constructor Summary

ESRIPolygonRecord()

ESRIPolygonRecord(byte[] b, int off)
Initialize a polygon record from the given buffer.

Method Summary

void	add(float[] radians) Add a poly to the record.
ESRIBoundingBox	getBoundingBox() Gets this record's bounding box.
int	getRecordLength() Yields the length of this record's data portion.
int	getShapeType() Gets this record's shape type as an int.
boolean	isPolygon() Is this a polygon or a arc/polyline?
void	setPolygon(boolean isPolygon) Set the poly type (polygon or arc/polyline).
int	write(byte[] b, int off) Writes this polygon to the given buffer at the given offset.

Methods inherited from class de.fhg.igd.earth.model.input.shapefile.ESRIRecord

getBinaryStoreSize, getContentLength, getRecordNumber

Methods inherited from class de.fhg.igd.earth.model.input.shapefile.ShapeUtils

readBEInt, readBox, readLEDouble, readLEInt, readLEInt, readLELong, readPoint, writeBEInt, writeBox, writeLEDouble, writeLEInt, writeLELong, writePoint

Methods inherited from class java.lang.Object

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

Field Detail

shapeType

protected int shapeType

Polygon or arc/polyline?.

bounds

public ESRIBoundingBox bounds

The bounding box.

polygons

public ESRIPoly[] polygons

An array of polygons.

Constructor Detail

ESRIPolygonRecord

public ESRIPolygonRecord()

ESRIPolygonRecord

public ESRIPolygonRecord(byte[] b,
                         int off)
                  throws IOException

Initialize a polygon record from the given buffer.

Parameters:

b - the buffer

off - the offset into the buffer where the data starts

Method Detail

isPolygon

public boolean isPolygon()

Is this a polygon or a arc/polyline?

Returns:

boolean

setPolygon

public void setPolygon(boolean isPolygon)

Set the poly type (polygon or arc/polyline).

add

public void add(float[] radians)

Add a poly to the record.

Parameters:

radians - coordinates: y,x,y,x,... (lat,lon) order in RADIANS!

getBoundingBox

public ESRIBoundingBox getBoundingBox()

Gets this record's bounding box.

Specified by:

getBoundingBox in class ESRIRecord

Returns:

a bounding box

getShapeType

public int getShapeType()

Gets this record's shape type as an int. Shape types are enumerated on the ShapeUtils class.

Specified by:

getShapeType in class ESRIRecord

Returns:

the shape type as an int (either SHAPE_TYPE_POLYGON or SHAPE_TYPE_ARC)

getRecordLength

public int getRecordLength()

Yields the length of this record's data portion.

(44 + (numParts * 4) + (numPoints * 16))
3 Integers + 4 doubles == 3 * 4bytes + 4 * 8bytes == 12 + 32 == 44.

Specified by:

getRecordLength in class ESRIRecord

Returns:

number of bytes equal to the size of this record's data

write

public int write(byte[] b,
                 int off)

Writes this polygon to the given buffer at the given offset.

Overrides:

write in class ESRIRecord

Parameters:

b - the buffer

off - the offset

Returns:

the number of bytes written