org.deegree.io.shpapi
Class ShapeUtils

java.lang.Object
  org.deegree.io.shpapi.ShapeUtils

public class ShapeUtils
extends Object

Utilities for reading and writing the components of shape files. Last changes:
25.11.1999 ap: memory allocation dynaminized
17.1.2000 ap: method SHPPoint readPoint(byte[] b, int off) modified
17.1.2000 ap: method SHPEnvelope readBox(byte[] b, int off) modified
17.1.2000 ap: method writePoint(..) modified

Version:

25.1.2000

Author:

Andreas Poth

Constructor Summary

ShapeUtils()

Method Summary

static SHPEnvelope	readBox(byte[] b, int off) method: readBox(byte[] b, int off) Reads a bounding box record.
static SHPPoint	readPoint(byte[] b, int off) readPoint(byte[] b, int off) Reads a point record.
static int	writeBox(byte[] b, int off, SHPEnvelope box) method: writeBox(byte[] b, int off, ESRIBoundingBox box) Writes the given bounding box to the given buffer at the given location.
static int	writePoint(byte[] b, int off, SHPPoint point) method: writePoint(byte[] b, int off, ESRIPoint point) Writes the given point to the given buffer at the given location.

Methods inherited from class java.lang.Object

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

Constructor Detail

ShapeUtils

public ShapeUtils()

Method Detail

readPoint

public static SHPPoint readPoint(byte[] b,
                                 int off)

readPoint(byte[] b, int off)
Reads a point record. A point record is a double representing the x value and a double representing a y value.

Parameters:

b - the raw data buffer

off - the offset into the buffer where the int resides

Returns:

the point read from the buffer at the offset location

readBox

public static SHPEnvelope readBox(byte[] b,
                                  int off)

method: readBox(byte[] b, int off)
Reads a bounding box record. A bounding box is four double representing, in order, xmin, ymin, xmax, ymax.

Parameters:

b - the raw data buffer

off - the offset into the buffer where the int resides

Returns:

the point read from the buffer at the offset location

writePoint

public static int writePoint(byte[] b,
                             int off,
                             SHPPoint point)

method: writePoint(byte[] b, int off, ESRIPoint point)
Writes the given point to the given buffer at the given location. The point is written as a double representing x followed by a double representing y.

Parameters:

b - the data buffer

off - the offset into the buffer where writing should occur

point - the point to write

Returns:

the number of bytes written

writeBox

public static int writeBox(byte[] b,
                           int off,
                           SHPEnvelope box)

method: writeBox(byte[] b, int off, ESRIBoundingBox box)
Writes the given bounding box to the given buffer at the given location. The bounding box is written as four doubles representing, in order, xmin, ymin, xmax, ymax.

Parameters:

b - the data buffer

off - the offset into the buffer where writing should occur

box - the bounding box to write

Returns:

the number of bytes written