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

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

Direct Known Subclasses:

ESRIPoly.ESRIFloatPoly

public abstract class ESRIPoly

extends ShapeUtils

A representation of a shape file polygon, subordinate to an ESRIPolygonRecord. This is an abstract class, please use one of the fully derived internal classes to do your bidding.

TODO

• Write double-floating point representation of an ESRIPoly.
• Make sure to abstract float point vs double float in other objects of the ShapeFile reading code.

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

Version:

: 1.0

Author:

: Werner Beutel

Nested Class Summary

static class

ESRIPoly.ESRIFloatPoly Poly with data stored in floating point format.

Field Summary

int	nPoints The number of (y,x) pairs of the ESRIPoly.

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

ESRIPoly()

Method Summary

abstract int

read(byte[] b, int off, boolean connect) Reads a polygon from the given buffer starting at the given offset.

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

nPoints

public int nPoints

The number of (y,x) pairs of the ESRIPoly. This value should be the points.length>>1.

Constructor Detail

ESRIPoly

public ESRIPoly()

Method Detail

read

public abstract int read(byte[] b,
                         int off,
                         boolean connect)

Reads a polygon from the given buffer starting at the given offset.

Parameters:

b - the buffer

off - the offset

Returns:

the number of bytes read